/*-------------------------------------------------------------------------
- pcode.c - post code generation
- Written By - Scott Dattalo scott@dattalo.com
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ pcode.c - post code generation
+ Written By - Scott Dattalo scott@dattalo.com
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2, or (at your option) any
+ later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-------------------------------------------------------------------------*/
-#include <stdio.h>
-
-#include "common.h" // Include everything in the SDCC src directory
-#include "newalloc.h"
-
-
+#include "device.h"
+#include "gen.h"
#include "pcode.h"
#include "pcodeflow.h"
#include "ralloc.h"
-#include "device.h"
-
-#if defined(__BORLANDC__) || defined(_MSC_VER)
-#define STRCASECMP stricmp
-#else
-#define STRCASECMP strcasecmp
-#endif
/****************************************************************/
/****************************************************************/
-peepCommand peepCommands[] = {
-
- {NOTBITSKIP, "_NOTBITSKIP_"},
- {BITSKIP, "_BITSKIP_"},
- {INVERTBITSKIP, "_INVERTBITSKIP_"},
-
- {-1, NULL}
-};
-
-
-
// Eventually this will go into device dependent files:
pCodeOpReg pc_status = {{PO_STATUS, "STATUS"}, -1, NULL,0,NULL};
pCodeOpReg pc_indf = {{PO_INDF, "INDF"}, -1, NULL,0,NULL};
pCodeOpReg pc_fsr = {{PO_FSR, "FSR"}, -1, NULL,0,NULL};
-pCodeOpReg pc_intcon = {{PO_INTCON, ""}, -1, NULL,0,NULL};
+pCodeOpReg pc_intcon = {{PO_INTCON, "INTCON"}, -1, NULL,0,NULL};
pCodeOpReg pc_pcl = {{PO_PCL, "PCL"}, -1, NULL,0,NULL};
pCodeOpReg pc_pclath = {{PO_PCLATH, "PCLATH"}, -1, NULL,0,NULL};
-pCodeOpReg pc_kzero = {{PO_GPR_REGISTER, "KZ"}, -1, NULL,0,NULL};
pCodeOpReg pc_wsave = {{PO_GPR_REGISTER, "WSAVE"}, -1, NULL,0,NULL};
pCodeOpReg pc_ssave = {{PO_GPR_REGISTER, "SSAVE"}, -1, NULL,0,NULL};
+pCodeOpReg pc_psave = {{PO_GPR_REGISTER, "PSAVE"}, -1, NULL,0,NULL};
-static int mnemonics_initialized = 0;
+pFile *the_pFile = NULL;
-static hTab *pic14MnemonicsHash = NULL;
-static hTab *pic14pCodePeepCommandsHash = NULL;
+#define SET_BANK_BIT (1 << 16)
+#define CLR_BANK_BIT 0
+
+static peepCommand peepCommands[] = {
+
+ {NOTBITSKIP, "_NOTBITSKIP_"},
+ {BITSKIP, "_BITSKIP_"},
+ {INVERTBITSKIP, "_INVERTBITSKIP_"},
+ {-1, NULL}
+};
+
+static int mnemonics_initialized = 0;
+static hTab *pic14MnemonicsHash = NULL;
+static hTab *pic14pCodePeepCommandsHash = NULL;
-static pFile *the_pFile = NULL;
+static pBlock *pb_dead_pcodes = NULL;
/* Hardcoded flags to change the behavior of the PIC port */
-static int peepOptimizing = 1; /* run the peephole optimizer if nonzero */
static int functionInlining = 1; /* inline functions if nonzero */
-static int GpCodeSequenceNumber = 1;
+// static int GpCodeSequenceNumber = 1;
static int GpcFlowSeq = 1;
-extern void RemoveUnusedRegisters(void);
+/* statistics (code size estimation) */
+static unsigned int pcode_insns = 0;
+static unsigned int pcode_doubles = 0;
+
+static unsigned peakIdx = 0; /* This keeps track of the peak register index for call tree register reuse */
+
/****************************************************************/
/* Forward declarations */
/****************************************************************/
-void unlinkpCode(pCode *pc);
-#if 0
-static void genericAnalyze(pCode *pc);
-static void AnalyzeGOTO(pCode *pc);
-static void AnalyzeSKIP(pCode *pc);
-static void AnalyzeRETURN(pCode *pc);
-#endif
-
static void genericDestruct(pCode *pc);
static void genericPrint(FILE *of,pCode *pc);
+static void pBlockStats(FILE *of, pBlock *pb);
+static pCode *findFunction(char *fname);
static void pCodePrintLabel(FILE *of, pCode *pc);
static void pCodePrintFunction(FILE *of, pCode *pc);
static void pCodeOpPrint(FILE *of, pCodeOp *pcop);
static char *get_op_from_instruction( pCodeInstruction *pcc);
-char *get_op( pCodeOp *pcop,char *buff,int buf_size);
-int pCodePeepMatchLine(pCodePeep *peepBlock, pCode *pcs, pCode *pcd);
-int pCodePeepMatchRule(pCode *pc);
-void pBlockStats(FILE *of, pBlock *pb);
-extern void pCodeInsertAfter(pCode *pc1, pCode *pc2);
-extern pCodeOp *popCopyReg(pCodeOpReg *pc);
-pCodeOp *popCopyGPR2Bit(pCodeOp *pc, int bitval);
-void pCodeRegMapLiveRanges(pBlock *pb);
+static pBlock *newpBlock(void);
/****************************************************************/
/* PIC Instructions */
/****************************************************************/
-pCodeInstruction pciADDWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_ADDWF,
- "ADDWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_REGISTER | PCC_Z) // outCond
+static pCodeInstruction pciADDWF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_ADDWF,
+ "ADDWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_REGISTER | PCC_C | PCC_DC | PCC_Z) // outCond
};
-pCodeInstruction pciADDFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_ADDFW,
- "ADDWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_W | PCC_Z) // outCond
+static pCodeInstruction pciADDFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_ADDFW,
+ "ADDWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_W | PCC_C | PCC_DC | PCC_Z) // outCond
};
-pCodeInstruction pciADDLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_ADDLW,
- "ADDLW",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_W, // inCond
- (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
+static pCodeInstruction pciADDLW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_ADDLW,
+ "ADDLW",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_LITERAL), // inCond
+ (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
};
-pCodeInstruction pciANDLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_ANDLW,
- "ANDLW",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_W, // inCond
- (PCC_W | PCC_Z) // outCond
+static pCodeInstruction pciANDLW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_ANDLW,
+ "ANDLW",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_LITERAL), // inCond
+ (PCC_W | PCC_Z) // outCond
};
-pCodeInstruction pciANDWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_ANDWF,
- "ANDWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_REGISTER | PCC_Z) // outCond
+static pCodeInstruction pciANDWF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_ANDWF,
+ "ANDWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_REGISTER | PCC_Z) // outCond
};
-pCodeInstruction pciANDFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_ANDFW,
- "ANDWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_W | PCC_Z) // outCond
+static pCodeInstruction pciANDFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_ANDFW,
+ "ANDWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_W | PCC_Z) // outCond
};
-pCodeInstruction pciBCF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_BCF,
- "BCF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,1, // dest, bit instruction
- 0,0, // branch, skip
- POC_BSF,
- PCC_REGISTER, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciBCF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_BCF,
+ "BCF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,1, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_BSF,
+ (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
+ (PCC_REGISTER | PCC_EXAMINE_PCOP) // outCond
};
-pCodeInstruction pciBSF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_BSF,
- "BSF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,1, // dest, bit instruction
- 0,0, // branch, skip
- POC_BCF,
- PCC_REGISTER, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciBSF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_BSF,
+ "BSF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,1, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_BCF,
+ (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
+ (PCC_REGISTER | PCC_EXAMINE_PCOP) // outCond
};
-pCodeInstruction pciBTFSC = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeSKIP,
- genericDestruct,
- genericPrint},
- POC_BTFSC,
- "BTFSC",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,1, // dest, bit instruction
- 1,1, // branch, skip
- POC_BTFSS,
- PCC_REGISTER, // inCond
- PCC_NONE // outCond
+static pCodeInstruction pciBTFSC = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_BTFSC,
+ "BTFSC",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,1, // dest, bit instruction
+ 1,1, // branch, skip
+ 0, // literal operand
+ POC_BTFSS,
+ (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
+ PCC_NONE // outCond
};
-pCodeInstruction pciBTFSS = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeSKIP,
- genericDestruct,
- genericPrint},
- POC_BTFSS,
- "BTFSS",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,1, // dest, bit instruction
- 1,1, // branch, skip
- POC_BTFSC,
- PCC_REGISTER, // inCond
- PCC_NONE // outCond
+static pCodeInstruction pciBTFSS = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_BTFSS,
+ "BTFSS",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,1, // dest, bit instruction
+ 1,1, // branch, skip
+ 0, // literal operand
+ POC_BTFSC,
+ (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
+ PCC_NONE // outCond
};
-pCodeInstruction pciCALL = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_CALL,
- "CALL",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 1,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_NONE // outCond
+static pCodeInstruction pciCALL = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_CALL,
+ "CALL",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 1,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_NONE | PCC_W), // inCond, reads argument from WREG
+ (PCC_NONE | PCC_W | PCC_C | PCC_DC | PCC_Z) // outCond, flags are destroyed by called function
};
-pCodeInstruction pciCOMF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_COMF,
- "COMF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciCOMF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_COMF,
+ "COMF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_REGISTER, // inCond
+ PCC_REGISTER | PCC_Z // outCond
};
-pCodeInstruction pciCOMFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_COMFW,
- "COMF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_W // outCond
+static pCodeInstruction pciCOMFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_COMFW,
+ "COMF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_REGISTER, // inCond
+ PCC_W | PCC_Z // outCond
};
-pCodeInstruction pciCLRF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_CLRF,
- "CLRF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciCLRF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_CLRF,
+ "CLRF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ PCC_REGISTER | PCC_Z // outCond
};
-pCodeInstruction pciCLRW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_CLRW,
- "CLRW",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 0, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_W // outCond
+static pCodeInstruction pciCLRW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_CLRW,
+ "CLRW",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 0, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ PCC_W | PCC_Z // outCond
};
-pCodeInstruction pciDECF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_DECF,
- "DECF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciCLRWDT = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_CLRWDT,
+ "CLRWDT",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 0, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ PCC_NONE // outCond
};
-pCodeInstruction pciDECFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_DECFW,
- "DECF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_W // outCond
+static pCodeInstruction pciDECF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_DECF,
+ "DECF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_REGISTER, // inCond
+ PCC_REGISTER | PCC_Z // outCond
};
-pCodeInstruction pciDECFSZ = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeSKIP,
- genericDestruct,
- genericPrint},
- POC_DECFSZ,
- "DECFSZ",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 1,1, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciDECFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_DECFW,
+ "DECF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_REGISTER, // inCond
+ PCC_W | PCC_Z // outCond
};
-pCodeInstruction pciDECFSZW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeSKIP,
- genericDestruct,
- genericPrint},
- POC_DECFSZW,
- "DECFSZ",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 1,1, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_W // outCond
+static pCodeInstruction pciDECFSZ = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_DECFSZ,
+ "DECFSZ",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 1,1, // branch, skip
+ 0, // literal operand
+ POC_DECF, // followed by BTFSC STATUS, Z --> also kills STATUS
+ PCC_REGISTER, // inCond
+ PCC_REGISTER | PCC_Z // outCond
};
-pCodeInstruction pciGOTO = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeGOTO,
- genericDestruct,
- genericPrint},
- POC_GOTO,
- "GOTO",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 1,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_NONE // outCond
+static pCodeInstruction pciDECFSZW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_DECFSZW,
+ "DECFSZ",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 1,1, // branch, skip
+ 0, // literal operand
+ POC_DECFW, // followed by BTFSC STATUS, Z --> also kills STATUS
+ PCC_REGISTER, // inCond
+ PCC_W | PCC_Z // outCond
};
-pCodeInstruction pciINCF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_INCF,
- "INCF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciGOTO = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_GOTO,
+ "GOTO",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 1,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ PCC_NONE // outCond
};
-pCodeInstruction pciINCFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_INCFW,
- "INCF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_W // outCond
+static pCodeInstruction pciINCF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_INCF,
+ "INCF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_REGISTER, // inCond
+ PCC_REGISTER | PCC_Z // outCond
};
-pCodeInstruction pciINCFSZ = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeSKIP,
- genericDestruct,
- genericPrint},
- POC_INCFSZ,
- "INCFSZ",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 1,1, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciINCFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_INCFW,
+ "INCF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_REGISTER, // inCond
+ PCC_W | PCC_Z // outCond
};
-pCodeInstruction pciINCFSZW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeSKIP,
- genericDestruct,
- genericPrint},
- POC_INCFSZW,
- "INCFSZ",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 1,1, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_W // outCond
+static pCodeInstruction pciINCFSZ = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_INCFSZ,
+ "INCFSZ",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 1,1, // branch, skip
+ 0, // literal operand
+ POC_INCF, // followed by BTFSC STATUS, Z --> also kills STATUS
+ PCC_REGISTER, // inCond
+ PCC_REGISTER | PCC_Z // outCond
};
-pCodeInstruction pciIORWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_IORWF,
- "IORWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_REGISTER | PCC_Z) // outCond
+static pCodeInstruction pciINCFSZW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_INCFSZW,
+ "INCFSZ",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 1,1, // branch, skip
+ 0, // literal operand
+ POC_INCFW, // followed by BTFSC STATUS, Z --> also kills STATUS
+ PCC_REGISTER, // inCond
+ PCC_W | PCC_Z // outCond
};
-pCodeInstruction pciIORFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_IORFW,
- "IORWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_W | PCC_Z) // outCond
+static pCodeInstruction pciIORWF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_IORWF,
+ "IORWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_REGISTER | PCC_Z) // outCond
};
-pCodeInstruction pciIORLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_IORLW,
- "IORLW",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_W, // inCond
- (PCC_W | PCC_Z) // outCond
+static pCodeInstruction pciIORFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_IORFW,
+ "IORWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_W | PCC_Z) // outCond
};
-pCodeInstruction pciMOVF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_MOVF,
- "MOVF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- PCC_Z // outCond
+static pCodeInstruction pciIORLW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_IORLW,
+ "IORLW",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_LITERAL), // inCond
+ (PCC_W | PCC_Z) // outCond
};
-pCodeInstruction pciMOVFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_MOVFW,
- "MOVF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_REGISTER, // inCond
- (PCC_W | PCC_Z) // outCond
+static pCodeInstruction pciMOVF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_MOVF,
+ "MOVF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_REGISTER, // inCond
+ PCC_Z // outCond
};
-pCodeInstruction pciMOVWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_MOVWF,
- "MOVWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_W, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciMOVFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_MOVFW,
+ "MOVF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_REGISTER, // inCond
+ (PCC_W | PCC_Z) // outCond
};
-pCodeInstruction pciMOVLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_MOVLW,
- "MOVLW",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_W // outCond
+static pCodeInstruction pciMOVWF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_MOVWF,
+ "MOVWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_W, // inCond
+ PCC_REGISTER // outCond
};
-pCodeInstruction pciNOP = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- genericDestruct,
- genericPrint},
- POC_NOP,
- "NOP",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 0, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_NONE // outCond
+static pCodeInstruction pciMOVLW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_MOVLW,
+ "MOVLW",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_NONE | PCC_LITERAL), // inCond
+ PCC_W // outCond
};
-pCodeInstruction pciRETFIE = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeRETURN,
- genericDestruct,
- genericPrint},
- POC_RETFIE,
- "RETFIE",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 0, // num ops
- 0,0, // dest, bit instruction
- 1,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_NONE // outCond (not true... affects the GIE bit too)
+static pCodeInstruction pciNOP = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_NOP,
+ "NOP",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 0, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ PCC_NONE // outCond
};
-pCodeInstruction pciRETLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeRETURN,
- genericDestruct,
- genericPrint},
- POC_RETLW,
- "RETLW",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 1,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_W // outCond
+static pCodeInstruction pciRETFIE = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_RETFIE,
+ "RETFIE",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 0, // num ops
+ 0,0, // dest, bit instruction
+ 1,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ (PCC_NONE | PCC_C | PCC_DC | PCC_Z) // outCond (not true... affects the GIE bit too), STATUS bit are retored
};
-pCodeInstruction pciRETURN = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // AnalyzeRETURN,
- genericDestruct,
- genericPrint},
- POC_RETURN,
- "RETURN",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 0, // num ops
- 0,0, // dest, bit instruction
- 1,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_NONE // outCond
+static pCodeInstruction pciRETLW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_RETLW,
+ "RETLW",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 1,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ PCC_LITERAL, // inCond
+ (PCC_W| PCC_C | PCC_DC | PCC_Z) // outCond, STATUS bits are irrelevant after RETLW
};
-pCodeInstruction pciRLF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_RLF,
- "RLF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_C | PCC_REGISTER), // inCond
- (PCC_REGISTER | PCC_Z | PCC_C | PCC_DC) // outCond
+static pCodeInstruction pciRETURN = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_RETURN,
+ "RETURN",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 0, // num ops
+ 0,0, // dest, bit instruction
+ 1,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE | PCC_W, // inCond, return value is possibly present in W
+ (PCC_NONE | PCC_C | PCC_DC | PCC_Z) // outCond, STATUS bits are irrelevant after RETURN
};
-pCodeInstruction pciRLFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_RLFW,
- "RLF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_C | PCC_REGISTER), // inCond
- (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
+static pCodeInstruction pciRLF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_RLF,
+ "RLF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_C | PCC_REGISTER), // inCond
+ (PCC_REGISTER | PCC_C ) // outCond
};
-pCodeInstruction pciRRF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_RRF,
- "RRF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_C | PCC_REGISTER), // inCond
- (PCC_REGISTER | PCC_Z | PCC_C | PCC_DC) // outCond
+static pCodeInstruction pciRLFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_RLFW,
+ "RLF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_C | PCC_REGISTER), // inCond
+ (PCC_W | PCC_C) // outCond
};
-pCodeInstruction pciRRFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_RRFW,
- "RRF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_C | PCC_REGISTER), // inCond
- (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
+static pCodeInstruction pciRRF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_RRF,
+ "RRF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_C | PCC_REGISTER), // inCond
+ (PCC_REGISTER | PCC_C) // outCond
};
-pCodeInstruction pciSUBWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_SUBWF,
- "SUBWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_REGISTER | PCC_Z) // outCond
+static pCodeInstruction pciRRFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_RRFW,
+ "RRF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_C | PCC_REGISTER), // inCond
+ (PCC_W | PCC_C) // outCond
};
-pCodeInstruction pciSUBFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_SUBFW,
- "SUBWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_W | PCC_Z) // outCond
+static pCodeInstruction pciSUBWF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_SUBWF,
+ "SUBWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_REGISTER | PCC_C | PCC_DC | PCC_Z) // outCond
};
-pCodeInstruction pciSUBLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_SUBLW,
- "SUBLW",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_W, // inCond
- (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
+static pCodeInstruction pciSUBFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_SUBFW,
+ "SUBWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_W | PCC_C | PCC_DC | PCC_Z) // outCond
};
-pCodeInstruction pciSWAPF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_SWAPF,
- "SWAPF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_REGISTER), // inCond
- (PCC_REGISTER) // outCond
+static pCodeInstruction pciSUBLW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_SUBLW,
+ "SUBLW",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_LITERAL), // inCond
+ (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
};
-pCodeInstruction pciSWAPFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_SWAPFW,
- "SWAPF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_REGISTER), // inCond
- (PCC_W) // outCond
+static pCodeInstruction pciSWAPF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_SWAPF,
+ "SWAPF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_REGISTER), // inCond
+ (PCC_REGISTER) // outCond
};
-pCodeInstruction pciTRIS = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_TRIS,
- "TRIS",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_NONE, // inCond
- PCC_REGISTER // outCond
+static pCodeInstruction pciSWAPFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_SWAPFW,
+ "SWAPF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_REGISTER), // inCond
+ (PCC_W) // outCond
};
-pCodeInstruction pciXORWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_XORWF,
- "XORWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 1,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_REGISTER | PCC_Z) // outCond
+static pCodeInstruction pciTRIS = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_TRIS,
+ "TRIS",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond /* FIXME: what's TRIS doing? */
+ PCC_REGISTER // outCond /* FIXME: what's TRIS doing */
};
-pCodeInstruction pciXORFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_XORFW,
- "XORWF",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 2, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- (PCC_W | PCC_REGISTER), // inCond
- (PCC_W | PCC_Z) // outCond
+static pCodeInstruction pciXORWF = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_XORWF,
+ "XORWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 1,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_REGISTER | PCC_Z) // outCond
};
-pCodeInstruction pciXORLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL,
- // genericAnalyze,
- genericDestruct,
- genericPrint},
- POC_XORLW,
- "XORLW",
- NULL, // from branch
- NULL, // to branch
- NULL, // label
- NULL, // operand
- NULL, // flow block
- NULL, // C source
- 1, // num ops
- 0,0, // dest, bit instruction
- 0,0, // branch, skip
- POC_NOP,
- PCC_W, // inCond
- (PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
+static pCodeInstruction pciXORFW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_XORFW,
+ "XORWF",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 2, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_REGISTER), // inCond
+ (PCC_W | PCC_Z) // outCond
};
+static pCodeInstruction pciXORLW = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_XORLW,
+ "XORLW",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_LITERAL), // inCond
+ (PCC_W | PCC_Z) // outCond
+};
-#define MAX_PIC14MNEMONICS 100
-pCodeInstruction *pic14Mnemonics[MAX_PIC14MNEMONICS];
-
-/* This definition needs to be part of configure.in */
-// #define USE_VSNPRINTF
-
-#ifdef USE_VSNPRINTF
- // Alas, vsnprintf is not ANSI standard, and does not exist
- // on Solaris (and probably other non-Gnu flavored Unixes).
-
-/*-----------------------------------------------------------------*/
-/* SAFE_snprintf - like snprintf except the string pointer is */
-/* after the string has been printed to. This is */
-/* useful for printing to string as though if it */
-/* were a stream. */
-/*-----------------------------------------------------------------*/
-void SAFE_snprintf(char **str, size_t *size, const char *format, ...)
-{
- va_list val;
- int len;
-
- if(!str || !*str)
- return;
-
- va_start(val, format);
-
- vsnprintf(*str, *size, format, val);
-
- va_end (val);
-
- len = strlen(*str);
- if(len > *size) {
- fprintf(stderr,"WARNING, it looks like %s has overflowed\n",__FUNCTION__);
- fprintf(stderr,"len = %d is > str size %d\n",len,*size);
- }
-
- *str += len;
- *size -= len;
-
-}
-
-#else // USE_VSNPRINTF
-
-// This version is *not* safe, despite the name.
-
-void SAFE_snprintf(char **str, size_t *size, const char *format, ...)
-{
- va_list val;
- int len;
- static char buffer[1024]; /* grossly conservative, but still not inherently safe */
-
- if(!str || !*str)
- return;
- va_start(val, format);
+static pCodeInstruction pciBANKSEL = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_BANKSEL,
+ "BANKSEL",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ PCC_NONE // outCond
+};
- vsprintf(buffer, format, val);
- va_end (val);
+static pCodeInstruction pciPAGESEL = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ genericDestruct,
+ genericPrint},
+ POC_PAGESEL,
+ "PAGESEL",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
+ NULL, // operand
+ NULL, // flow block
+ NULL, // C source
+ 1, // num ops
+ 0,0, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ PCC_NONE // outCond
+};
- len = strlen(buffer);
- if(len > *size) {
- fprintf(stderr,"WARNING, it looks like %s has overflowed\n",__FUNCTION__);
- fprintf(stderr,"len = %d is > str size %d\n",len,*size);
- }
+pCodeInstruction *pic14Mnemonics[MAX_PIC14MNEMONICS];
- strcpy(*str, buffer);
- *str += len;
- *size -= len;
+/*-----------------------------------------------------------------*/
+/* return a unique ID number to assist pCodes debuging */
+/*-----------------------------------------------------------------*/
+static unsigned PCodeID(void) {
+ static unsigned int pcodeId = 1; /* unique ID number to be assigned to all pCodes */
+ /*
+ static unsigned int stop;
+ if (pcodeId == 1448)
+ stop++; // Place break point here
+ */
+ return pcodeId++;
}
-#endif // USE_VSNPRINTF
-
-
-extern void initStack(int base_address, int size);
-extern regs *allocProcessorRegister(int rIdx, char * name, short po_type, int alias);
-extern regs *allocInternalRegister(int rIdx, char * name, short po_type, int alias);
-extern void init_pic(char *);
-
void pCodeInitRegisters(void)
{
-
- initStack(0xfff, 8);
- init_pic(port->processor);
-
- pc_status.r = allocProcessorRegister(IDX_STATUS,"STATUS", PO_STATUS, 0x80);
- pc_pcl.r = allocProcessorRegister(IDX_PCL,"PCL", PO_PCL, 0x80);
- pc_pclath.r = allocProcessorRegister(IDX_PCLATH,"PCLATH", PO_PCLATH, 0x80);
- pc_fsr.r = allocProcessorRegister(IDX_FSR,"FSR", PO_FSR, 0x80);
- pc_indf.r = allocProcessorRegister(IDX_INDF,"INDF", PO_INDF, 0x80);
- pc_intcon.r = allocProcessorRegister(IDX_INTCON,"INTCON", PO_INTCON, 0x80);
-
- pc_status.rIdx = IDX_STATUS;
- pc_fsr.rIdx = IDX_FSR;
- pc_indf.rIdx = IDX_INDF;
- pc_intcon.rIdx = IDX_INTCON;
- pc_pcl.rIdx = IDX_PCL;
- pc_pclath.rIdx = IDX_PCLATH;
-
- pc_kzero.r = allocInternalRegister(IDX_KZ,"KZ",PO_GPR_REGISTER,0);
- pc_ssave.r = allocInternalRegister(IDX_SSAVE,"SSAVE", PO_GPR_REGISTER, 0x80);
- pc_wsave.r = allocInternalRegister(IDX_WSAVE,"WSAVE", PO_GPR_REGISTER, 0);
-
- pc_kzero.rIdx = IDX_KZ;
- pc_wsave.rIdx = IDX_WSAVE;
- pc_ssave.rIdx = IDX_SSAVE;
-
+ static int initialized=0;
+ int shareBankAddress, stkSize, haveShared;
+ PIC_device *pic;
+
+ if(initialized)
+ return;
+ initialized = 1;
+
+ pic = init_pic(port->processor);
+ haveShared = pic14_getSharedStack(NULL, &shareBankAddress, &stkSize);
+ /* Set pseudo stack size to SHAREBANKSIZE - 3.
+ * On multi memory bank ICs this leaves room for WSAVE/SSAVE/PSAVE
+ * (used for interrupts) to fit into the shared portion of the
+ * memory bank. */
+ stkSize = stkSize - 3;
+ assert(stkSize >= 0);
+ initStack(shareBankAddress, stkSize, haveShared);
+
+ /* TODO: Read aliases for SFRs from regmap lines in device description. */
+ pc_status.r = allocProcessorRegister(IDX_STATUS,"STATUS", PO_STATUS, 0x180);
+ pc_pcl.r = allocProcessorRegister(IDX_PCL,"PCL", PO_PCL, 0x80);
+ pc_pclath.r = allocProcessorRegister(IDX_PCLATH,"PCLATH", PO_PCLATH, 0x180);
+ pc_fsr.r = allocProcessorRegister(IDX_FSR,"FSR", PO_FSR, 0x180);
+ pc_indf.r = allocProcessorRegister(IDX_INDF,"INDF", PO_INDF, 0x180);
+ pc_intcon.r = allocProcessorRegister(IDX_INTCON,"INTCON", PO_INTCON, 0x180);
+
+ pc_status.rIdx = IDX_STATUS;
+ pc_fsr.rIdx = IDX_FSR;
+ pc_indf.rIdx = IDX_INDF;
+ pc_intcon.rIdx = IDX_INTCON;
+ pc_pcl.rIdx = IDX_PCL;
+ pc_pclath.rIdx = IDX_PCLATH;
+
+ /* Interrupt storage for working register - must be same address in all banks ie section SHAREBANK. */
+ pc_wsave.r = allocInternalRegister(IDX_WSAVE,pc_wsave.pcop.name,pc_wsave.pcop.type, pic ? pic->bankMask : 0x180);
+ /* Interrupt storage for status register. */
+ pc_ssave.r = allocInternalRegister(IDX_SSAVE,pc_ssave.pcop.name,pc_ssave.pcop.type, (pic && haveShared) ? pic->bankMask : 0);
+ /* Interrupt storage for pclath register. */
+ pc_psave.r = allocInternalRegister(IDX_PSAVE,pc_psave.pcop.name,pc_psave.pcop.type, (pic && haveShared) ? pic->bankMask : 0);
+
+ pc_wsave.rIdx = pc_wsave.r->rIdx;
+ pc_ssave.rIdx = pc_ssave.r->rIdx;
+ pc_psave.rIdx = pc_psave.r->rIdx;
+
+ pc_wsave.r->isFixed = 1; /* Some PIC ICs do not have a sharebank - this register needs to be reserved across all banks. */
+ pc_wsave.r->address = shareBankAddress-stkSize;
+ pc_ssave.r->isFixed = 1; /* This register must be in the first bank. */
+ pc_ssave.r->address = shareBankAddress-stkSize-1;
+ pc_psave.r->isFixed = 1; /* This register must be in the first bank. */
+ pc_psave.r->address = shareBankAddress-stkSize-2;
+
+ /* probably should put this in a separate initialization routine */
+ pb_dead_pcodes = newpBlock();
+
}
/*-----------------------------------------------------------------*/
/* */
/*-----------------------------------------------------------------*/
-int mnem2key(char const *mnem)
+static int mnem2key(unsigned char const *mnem)
{
- int key = 0;
-
- if(!mnem)
- return 0;
-
- while(*mnem) {
-
- key += toupper(*mnem++) +1;
-
- }
-
- return (key & 0x1f);
-
+ int key = 0;
+
+ if(!mnem)
+ return 0;
+
+ while(*mnem) {
+
+ key += toupper(*mnem++) +1;
+
+ }
+
+ return (key & 0x1f);
+
}
-void pic14initMnemonics(void)
+static void pic14initMnemonics(void)
{
- int i = 0;
- int key;
- // char *str;
- pCodeInstruction *pci;
-
- if(mnemonics_initialized)
- return;
-
-//FIXME - probably should NULL out the array before making the assignments
-//since we check the array contents below this initialization.
-
- pic14Mnemonics[POC_ADDLW] = &pciADDLW;
- pic14Mnemonics[POC_ADDWF] = &pciADDWF;
- pic14Mnemonics[POC_ADDFW] = &pciADDFW;
- pic14Mnemonics[POC_ANDLW] = &pciANDLW;
- pic14Mnemonics[POC_ANDWF] = &pciANDWF;
- pic14Mnemonics[POC_ANDFW] = &pciANDFW;
- pic14Mnemonics[POC_BCF] = &pciBCF;
- pic14Mnemonics[POC_BSF] = &pciBSF;
- pic14Mnemonics[POC_BTFSC] = &pciBTFSC;
- pic14Mnemonics[POC_BTFSS] = &pciBTFSS;
- pic14Mnemonics[POC_CALL] = &pciCALL;
- pic14Mnemonics[POC_COMF] = &pciCOMF;
- pic14Mnemonics[POC_COMFW] = &pciCOMFW;
- pic14Mnemonics[POC_CLRF] = &pciCLRF;
- pic14Mnemonics[POC_CLRW] = &pciCLRW;
- pic14Mnemonics[POC_DECF] = &pciDECF;
- pic14Mnemonics[POC_DECFW] = &pciDECFW;
- pic14Mnemonics[POC_DECFSZ] = &pciDECFSZ;
- pic14Mnemonics[POC_DECFSZW] = &pciDECFSZW;
- pic14Mnemonics[POC_GOTO] = &pciGOTO;
- pic14Mnemonics[POC_INCF] = &pciINCF;
- pic14Mnemonics[POC_INCFW] = &pciINCFW;
- pic14Mnemonics[POC_INCFSZ] = &pciINCFSZ;
- pic14Mnemonics[POC_INCFSZW] = &pciINCFSZW;
- pic14Mnemonics[POC_IORLW] = &pciIORLW;
- pic14Mnemonics[POC_IORWF] = &pciIORWF;
- pic14Mnemonics[POC_IORFW] = &pciIORFW;
- pic14Mnemonics[POC_MOVF] = &pciMOVF;
- pic14Mnemonics[POC_MOVFW] = &pciMOVFW;
- pic14Mnemonics[POC_MOVLW] = &pciMOVLW;
- pic14Mnemonics[POC_MOVWF] = &pciMOVWF;
- pic14Mnemonics[POC_NOP] = &pciNOP;
- pic14Mnemonics[POC_RETFIE] = &pciRETFIE;
- pic14Mnemonics[POC_RETLW] = &pciRETLW;
- pic14Mnemonics[POC_RETURN] = &pciRETURN;
- pic14Mnemonics[POC_RLF] = &pciRLF;
- pic14Mnemonics[POC_RLFW] = &pciRLFW;
- pic14Mnemonics[POC_RRF] = &pciRRF;
- pic14Mnemonics[POC_RRFW] = &pciRRFW;
- pic14Mnemonics[POC_SUBLW] = &pciSUBLW;
- pic14Mnemonics[POC_SUBWF] = &pciSUBWF;
- pic14Mnemonics[POC_SUBFW] = &pciSUBFW;
- pic14Mnemonics[POC_SWAPF] = &pciSWAPF;
- pic14Mnemonics[POC_SWAPFW] = &pciSWAPFW;
- pic14Mnemonics[POC_TRIS] = &pciTRIS;
- pic14Mnemonics[POC_XORLW] = &pciXORLW;
- pic14Mnemonics[POC_XORWF] = &pciXORWF;
- pic14Mnemonics[POC_XORFW] = &pciXORFW;
-
- for(i=0; i<MAX_PIC14MNEMONICS; i++)
- if(pic14Mnemonics[i])
- hTabAddItem(&pic14MnemonicsHash, mnem2key(pic14Mnemonics[i]->mnemonic), pic14Mnemonics[i]);
- pci = hTabFirstItem(pic14MnemonicsHash, &key);
-
- while(pci) {
- DFPRINTF((stderr, "element %d key %d, mnem %s\n",i++,key,pci->mnemonic));
- pci = hTabNextItem(pic14MnemonicsHash, &key);
- }
-
- mnemonics_initialized = 1;
+ int i = 0;
+ int key;
+ // char *str;
+ pCodeInstruction *pci;
+
+ if(mnemonics_initialized)
+ return;
+
+ //FIXME - probably should NULL out the array before making the assignments
+ //since we check the array contents below this initialization.
+
+ pic14Mnemonics[POC_ADDLW] = &pciADDLW;
+ pic14Mnemonics[POC_ADDWF] = &pciADDWF;
+ pic14Mnemonics[POC_ADDFW] = &pciADDFW;
+ pic14Mnemonics[POC_ANDLW] = &pciANDLW;
+ pic14Mnemonics[POC_ANDWF] = &pciANDWF;
+ pic14Mnemonics[POC_ANDFW] = &pciANDFW;
+ pic14Mnemonics[POC_BCF] = &pciBCF;
+ pic14Mnemonics[POC_BSF] = &pciBSF;
+ pic14Mnemonics[POC_BTFSC] = &pciBTFSC;
+ pic14Mnemonics[POC_BTFSS] = &pciBTFSS;
+ pic14Mnemonics[POC_CALL] = &pciCALL;
+ pic14Mnemonics[POC_COMF] = &pciCOMF;
+ pic14Mnemonics[POC_COMFW] = &pciCOMFW;
+ pic14Mnemonics[POC_CLRF] = &pciCLRF;
+ pic14Mnemonics[POC_CLRW] = &pciCLRW;
+ pic14Mnemonics[POC_CLRWDT] = &pciCLRWDT;
+ pic14Mnemonics[POC_DECF] = &pciDECF;
+ pic14Mnemonics[POC_DECFW] = &pciDECFW;
+ pic14Mnemonics[POC_DECFSZ] = &pciDECFSZ;
+ pic14Mnemonics[POC_DECFSZW] = &pciDECFSZW;
+ pic14Mnemonics[POC_GOTO] = &pciGOTO;
+ pic14Mnemonics[POC_INCF] = &pciINCF;
+ pic14Mnemonics[POC_INCFW] = &pciINCFW;
+ pic14Mnemonics[POC_INCFSZ] = &pciINCFSZ;
+ pic14Mnemonics[POC_INCFSZW] = &pciINCFSZW;
+ pic14Mnemonics[POC_IORLW] = &pciIORLW;
+ pic14Mnemonics[POC_IORWF] = &pciIORWF;
+ pic14Mnemonics[POC_IORFW] = &pciIORFW;
+ pic14Mnemonics[POC_MOVF] = &pciMOVF;
+ pic14Mnemonics[POC_MOVFW] = &pciMOVFW;
+ pic14Mnemonics[POC_MOVLW] = &pciMOVLW;
+ pic14Mnemonics[POC_MOVWF] = &pciMOVWF;
+ pic14Mnemonics[POC_NOP] = &pciNOP;
+ pic14Mnemonics[POC_RETFIE] = &pciRETFIE;
+ pic14Mnemonics[POC_RETLW] = &pciRETLW;
+ pic14Mnemonics[POC_RETURN] = &pciRETURN;
+ pic14Mnemonics[POC_RLF] = &pciRLF;
+ pic14Mnemonics[POC_RLFW] = &pciRLFW;
+ pic14Mnemonics[POC_RRF] = &pciRRF;
+ pic14Mnemonics[POC_RRFW] = &pciRRFW;
+ pic14Mnemonics[POC_SUBLW] = &pciSUBLW;
+ pic14Mnemonics[POC_SUBWF] = &pciSUBWF;
+ pic14Mnemonics[POC_SUBFW] = &pciSUBFW;
+ pic14Mnemonics[POC_SWAPF] = &pciSWAPF;
+ pic14Mnemonics[POC_SWAPFW] = &pciSWAPFW;
+ pic14Mnemonics[POC_TRIS] = &pciTRIS;
+ pic14Mnemonics[POC_XORLW] = &pciXORLW;
+ pic14Mnemonics[POC_XORWF] = &pciXORWF;
+ pic14Mnemonics[POC_XORFW] = &pciXORFW;
+ pic14Mnemonics[POC_BANKSEL] = &pciBANKSEL;
+ pic14Mnemonics[POC_PAGESEL] = &pciPAGESEL;
+
+ for(i=0; i<MAX_PIC14MNEMONICS; i++)
+ if(pic14Mnemonics[i])
+ hTabAddItem(&pic14MnemonicsHash, mnem2key((unsigned char *)pic14Mnemonics[i]->mnemonic), pic14Mnemonics[i]);
+ pci = hTabFirstItem(pic14MnemonicsHash, &key);
+
+ while(pci) {
+ DFPRINTF((stderr, "element %d key %d, mnem %s\n",i++,key,pci->mnemonic));
+ pci = hTabNextItem(pic14MnemonicsHash, &key);
+ }
+
+ mnemonics_initialized = 1;
}
-int getpCodePeepCommand(char *cmd);
-
int getpCode(char *mnem,unsigned dest)
{
-
- pCodeInstruction *pci;
- int key = mnem2key(mnem);
-
- if(!mnemonics_initialized)
- pic14initMnemonics();
-
- pci = hTabFirstItemWK(pic14MnemonicsHash, key);
-
- while(pci) {
-
- if(STRCASECMP(pci->mnemonic, mnem) == 0) {
- if((pci->num_ops <= 1) || (pci->isModReg == dest))
- return(pci->op);
- }
-
- pci = hTabNextItemWK (pic14MnemonicsHash);
-
- }
-
- return -1;
+
+ pCodeInstruction *pci;
+ int key = mnem2key((unsigned char *)mnem);
+
+ if(!mnemonics_initialized)
+ pic14initMnemonics();
+
+ pci = hTabFirstItemWK(pic14MnemonicsHash, key);
+
+ while(pci) {
+
+ if(STRCASECMP(pci->mnemonic, mnem) == 0) {
+ if((pci->num_ops <= 1) || (pci->isModReg == dest) || (pci->isBitInst))
+ return(pci->op);
+ }
+
+ pci = hTabNextItemWK (pic14MnemonicsHash);
+
+ }
+
+ return -1;
}
/*-----------------------------------------------------------------*
- * pic14initpCodePeepCommands
- *
- *-----------------------------------------------------------------*/
+* pic14initpCodePeepCommands
+*
+*-----------------------------------------------------------------*/
void pic14initpCodePeepCommands(void)
{
-
- int key, i;
- peepCommand *pcmd;
-
- i = 0;
- do {
- hTabAddItem(&pic14pCodePeepCommandsHash,
- mnem2key(peepCommands[i].cmd), &peepCommands[i]);
- i++;
- } while (peepCommands[i].cmd);
-
- pcmd = hTabFirstItem(pic14pCodePeepCommandsHash, &key);
-
- while(pcmd) {
- //fprintf(stderr, "peep command %s key %d\n",pcmd->cmd,pcmd->id);
- pcmd = hTabNextItem(pic14pCodePeepCommandsHash, &key);
- }
-
+
+ int key, i;
+ peepCommand *pcmd;
+
+ i = 0;
+ do {
+ hTabAddItem(&pic14pCodePeepCommandsHash,
+ mnem2key((unsigned char *)peepCommands[i].cmd), &peepCommands[i]);
+ i++;
+ } while (peepCommands[i].cmd);
+
+ pcmd = hTabFirstItem(pic14pCodePeepCommandsHash, &key);
+
+ while(pcmd) {
+ //fprintf(stderr, "peep command %s key %d\n",pcmd->cmd,pcmd->id);
+ pcmd = hTabNextItem(pic14pCodePeepCommandsHash, &key);
+ }
+
}
/*-----------------------------------------------------------------
- *
- *
- *-----------------------------------------------------------------*/
+*
+*
+*-----------------------------------------------------------------*/
int getpCodePeepCommand(char *cmd)
{
-
- peepCommand *pcmd;
- int key = mnem2key(cmd);
-
-
- pcmd = hTabFirstItemWK(pic14pCodePeepCommandsHash, key);
-
- while(pcmd) {
- // fprintf(stderr," comparing %s to %s\n",pcmd->cmd,cmd);
- if(STRCASECMP(pcmd->cmd, cmd) == 0) {
- return pcmd->id;
- }
-
- pcmd = hTabNextItemWK (pic14pCodePeepCommandsHash);
-
- }
-
- return -1;
+
+ peepCommand *pcmd;
+ int key = mnem2key((unsigned char *)cmd);
+
+
+ pcmd = hTabFirstItemWK(pic14pCodePeepCommandsHash, key);
+
+ while(pcmd) {
+ // fprintf(stderr," comparing %s to %s\n",pcmd->cmd,cmd);
+ if(STRCASECMP(pcmd->cmd, cmd) == 0) {
+ return pcmd->id;
+ }
+
+ pcmd = hTabNextItemWK (pic14pCodePeepCommandsHash);
+
+ }
+
+ return -1;
}
-char getpBlock_dbName(pBlock *pb)
+static char getpBlock_dbName(pBlock *pb)
{
- if(!pb)
- return 0;
-
- if(pb->cmemmap)
- return pb->cmemmap->dbName;
-
- return pb->dbName;
+ if(!pb)
+ return 0;
+
+ if(pb->cmemmap)
+ return pb->cmemmap->dbName;
+
+ return pb->dbName;
}
+
void pBlockConvert2ISR(pBlock *pb)
{
- if(!pb)
- return;
-
- if(pb->cmemmap)
- pb->cmemmap = NULL;
-
- pb->dbName = 'I';
+ if(!pb)
+ return;
+
+ if(pb->cmemmap)
+ pb->cmemmap = NULL;
+
+ pb->dbName = 'I';
}
/*-----------------------------------------------------------------*/
void movepBlock2Head(char dbName)
{
- pBlock *pb;
-
- pb = the_pFile->pbHead;
-
- while(pb) {
-
- if(getpBlock_dbName(pb) == dbName) {
- pBlock *pbn = pb->next;
- pb->next = the_pFile->pbHead;
- the_pFile->pbHead->prev = pb;
- the_pFile->pbHead = pb;
-
- if(pb->prev)
- pb->prev->next = pbn;
-
- // If the pBlock that we just moved was the last
- // one in the link of all of the pBlocks, then we
- // need to point the tail to the block just before
- // the one we moved.
- // Note: if pb->next is NULL, then pb must have
- // been the last pBlock in the chain.
-
- if(pbn)
- pbn->prev = pb->prev;
- else
- the_pFile->pbTail = pb->prev;
-
- pb = pbn;
-
- } else
- pb = pb->next;
-
- }
-
+ pBlock *pb;
+
+ if (!the_pFile)
+ return;
+
+ pb = the_pFile->pbHead;
+
+ while(pb) {
+
+ if(getpBlock_dbName(pb) == dbName) {
+ pBlock *pbn = pb->next;
+ pb->next = the_pFile->pbHead;
+ the_pFile->pbHead->prev = pb;
+ the_pFile->pbHead = pb;
+
+ if(pb->prev)
+ pb->prev->next = pbn;
+
+ // If the pBlock that we just moved was the last
+ // one in the link of all of the pBlocks, then we
+ // need to point the tail to the block just before
+ // the one we moved.
+ // Note: if pb->next is NULL, then pb must have
+ // been the last pBlock in the chain.
+
+ if(pbn)
+ pbn->prev = pb->prev;
+ else
+ the_pFile->pbTail = pb->prev;
+
+ pb = pbn;
+
+ } else
+ pb = pb->next;
+
+ }
+
}
void copypCode(FILE *of, char dbName)
{
- pBlock *pb;
-
- if(!of || !the_pFile)
- return;
+ pBlock *pb;
+
+ if(!of || !the_pFile)
+ return;
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ if(getpBlock_dbName(pb) == dbName) {
+ pBlockStats(of,pb);
+ printpBlock(of,pb);
+ fprintf (of, "\n");
+ }
+ }
+
+}
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(getpBlock_dbName(pb) == dbName) {
- pBlockStats(of,pb);
- printpBlock(of,pb);
- }
- }
+void resetpCodeStatistics (void)
+{
+ pcode_insns = pcode_doubles = 0;
+}
+void dumppCodeStatistics (FILE *of)
+{
+ /* dump statistics */
+ fprintf (of, "\n");
+ fprintf (of, ";\tcode size estimation:\n");
+ fprintf (of, ";\t%5u+%5u = %5u instructions (%5u byte)\n", pcode_insns, pcode_doubles, pcode_insns + pcode_doubles, 2*(pcode_insns + 2*pcode_doubles));
+ fprintf (of, "\n");
}
+
void pcode_test(void)
{
-
- DFPRINTF((stderr,"pcode is alive!\n"));
-
- //initMnemonics();
-
- if(the_pFile) {
-
- pBlock *pb;
- FILE *pFile;
- char buffer[100];
-
- /* create the file name */
- strcpy(buffer,srcFileName);
- strcat(buffer,".p");
-
- if( !(pFile = fopen(buffer, "w" ))) {
- werror(E_FILE_OPEN_ERR,buffer);
- exit(1);
- }
-
- fprintf(pFile,"pcode dump\n\n");
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- fprintf(pFile,"\n\tNew pBlock\n\n");
- if(pb->cmemmap)
- fprintf(pFile,"%s",pb->cmemmap->sname);
- else
- fprintf(pFile,"internal pblock");
-
- fprintf(pFile,", dbName =%c\n",getpBlock_dbName(pb));
- printpBlock(pFile,pb);
- }
- }
+
+ DFPRINTF((stderr,"pcode is alive!\n"));
+
+ //initMnemonics();
+
+ if(the_pFile) {
+
+ pBlock *pb;
+ FILE *pFile;
+ char buffer[100];
+
+ /* create the file name */
+ strcpy(buffer,dstFileName);
+ strcat(buffer,".p");
+
+ if( !(pFile = fopen(buffer, "w" ))) {
+ werror(E_FILE_OPEN_ERR,buffer);
+ exit(1);
+ }
+
+ fprintf(pFile,"pcode dump\n\n");
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ fprintf(pFile,"\n\tNew pBlock\n\n");
+ if(pb->cmemmap)
+ fprintf(pFile,"%s",pb->cmemmap->sname);
+ else
+ fprintf(pFile,"internal pblock");
+
+ fprintf(pFile,", dbName =%c\n",getpBlock_dbName(pb));
+ printpBlock(pFile,pb);
+ }
+ }
}
+
/*-----------------------------------------------------------------*/
/* int RegCond(pCodeOp *pcop) - if pcop points to the STATUS reg- */
/* ister, RegCond will return the bit being referenced. */
static int RegCond(pCodeOp *pcop)
{
-
- if(!pcop)
- return 0;
-
- if(pcop->type == PO_GPR_BIT && !strcmp(pcop->name, pc_status.pcop.name)) {
- switch(PCORB(pcop)->bit) {
- case PIC_C_BIT:
- return PCC_C;
- case PIC_DC_BIT:
- return PCC_DC;
- case PIC_Z_BIT:
- return PCC_Z;
- }
-
- }
-
- return 0;
+
+ if(!pcop)
+ return 0;
+
+ if (pcop->type == PO_GPR_BIT) {
+ char *name = pcop->name;
+ if (!name)
+ name = PCOR(pcop)->r->name;
+ if (strcmp(name, pc_status.pcop.name) == 0)
+ {
+ switch(PCORB(pcop)->bit) {
+ case PIC_C_BIT:
+ return PCC_C;
+ case PIC_DC_BIT:
+ return PCC_DC;
+ case PIC_Z_BIT:
+ return PCC_Z;
+ }
+ }
+ }
+
+ return 0;
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
pCode *newpCode (PIC_OPCODE op, pCodeOp *pcop)
{
- pCodeInstruction *pci ;
-
- if(!mnemonics_initialized)
- pic14initMnemonics();
-
- pci = Safe_calloc(1, sizeof(pCodeInstruction));
-
- if((op>=0) && (op < MAX_PIC14MNEMONICS) && pic14Mnemonics[op]) {
- memcpy(pci, pic14Mnemonics[op], sizeof(pCodeInstruction));
- pci->pcop = pcop;
-
- if(pci->inCond == PCC_EXAMINE_PCOP)
- pci->inCond = RegCond(pcop);
-
- if(pci->outCond == PCC_EXAMINE_PCOP)
- pci->outCond = RegCond(pcop);
-
- pci->pc.prev = pci->pc.next = NULL;
- return (pCode *)pci;
- }
-
- fprintf(stderr, "pCode mnemonic error %s,%d\n",__FUNCTION__,__LINE__);
- exit(1);
-
- return NULL;
-}
+ pCodeInstruction *pci ;
+
+ if(!mnemonics_initialized)
+ pic14initMnemonics();
+
+ pci = Safe_calloc(1, sizeof(pCodeInstruction));
+
+ if((op>=0) && (op < MAX_PIC14MNEMONICS) && pic14Mnemonics[op]) {
+ memcpy(pci, pic14Mnemonics[op], sizeof(pCodeInstruction));
+ pci->pc.id = PCodeID();
+ pci->pcop = pcop;
+
+ if(pci->inCond & PCC_EXAMINE_PCOP)
+ pci->inCond |= RegCond(pcop);
+
+ if(pci->outCond & PCC_EXAMINE_PCOP)
+ pci->outCond |= RegCond(pcop);
+
+ pci->pc.prev = pci->pc.next = NULL;
+ return (pCode *)pci;
+ }
+
+ fprintf(stderr, "pCode mnemonic error %s,%d\n",__FUNCTION__,__LINE__);
+ exit(1);
+
+ return NULL;
+}
/*-----------------------------------------------------------------*/
/* newpCodeWild - create a "wild" as in wild card pCode */
pCode *newpCodeWild(int pCodeID, pCodeOp *optional_operand, pCodeOp *optional_label)
{
-
- pCodeWild *pcw;
-
- pcw = Safe_calloc(1,sizeof(pCodeWild));
-
- pcw->pci.pc.type = PC_WILD;
- pcw->pci.pc.prev = pcw->pci.pc.next = NULL;
- pcw->pci.from = pcw->pci.to = pcw->pci.label = NULL;
- pcw->pci.pc.pb = NULL;
-
- // pcw->pci.pc.analyze = genericAnalyze;
- pcw->pci.pc.destruct = genericDestruct;
- pcw->pci.pc.print = genericPrint;
-
- pcw->id = pCodeID; // this is the 'n' in %n
- pcw->operand = optional_operand;
- pcw->label = optional_label;
-
- pcw->mustBeBitSkipInst = 0;
- pcw->mustNotBeBitSkipInst = 0;
- pcw->invertBitSkipInst = 0;
-
- return ( (pCode *)pcw);
-
+
+ pCodeWild *pcw;
+
+ pcw = Safe_calloc(1,sizeof(pCodeWild));
+
+ pcw->pci.pc.type = PC_WILD;
+ pcw->pci.pc.prev = pcw->pci.pc.next = NULL;
+ pcw->id = PCodeID();
+ pcw->pci.from = pcw->pci.to = pcw->pci.label = NULL;
+ pcw->pci.pc.pb = NULL;
+
+ pcw->pci.pc.destruct = genericDestruct;
+ pcw->pci.pc.print = genericPrint;
+
+ pcw->id = pCodeID; // this is the 'n' in %n
+ pcw->operand = optional_operand;
+ pcw->label = optional_label;
+
+ pcw->mustBeBitSkipInst = 0;
+ pcw->mustNotBeBitSkipInst = 0;
+ pcw->invertBitSkipInst = 0;
+
+ return ( (pCode *)pcw);
+
}
- /*-----------------------------------------------------------------*/
-/* newPcodeInlineP - create a new pCode from a char string */
+/*-----------------------------------------------------------------*/
+/* newPcodeCharP - create a new pCode from a char string */
/*-----------------------------------------------------------------*/
-
-pCode *newpCodeInlineP(char *cP)
+pCode *newpCodeCharP(char *cP)
{
-
- pCodeComment *pcc ;
-
- pcc = Safe_calloc(1,sizeof(pCodeComment));
-
- pcc->pc.type = PC_INLINE;
- pcc->pc.prev = pcc->pc.next = NULL;
- //pcc->pc.from = pcc->pc.to = pcc->pc.label = NULL;
- pcc->pc.pb = NULL;
-
- // pcc->pc.analyze = genericAnalyze;
- pcc->pc.destruct = genericDestruct;
- pcc->pc.print = genericPrint;
-
- if(cP)
- pcc->comment = Safe_strdup(cP);
- else
- pcc->comment = NULL;
-
- return ( (pCode *)pcc);
-
-}
-
-/*-----------------------------------------------------------------*/
-/* newPcodeCharP - create a new pCode from a char string */
-/*-----------------------------------------------------------------*/
-
-pCode *newpCodeCharP(char *cP)
-{
-
- pCodeComment *pcc ;
-
- pcc = Safe_calloc(1,sizeof(pCodeComment));
-
- pcc->pc.type = PC_COMMENT;
- pcc->pc.prev = pcc->pc.next = NULL;
- //pcc->pc.from = pcc->pc.to = pcc->pc.label = NULL;
- pcc->pc.pb = NULL;
-
- // pcc->pc.analyze = genericAnalyze;
- pcc->pc.destruct = genericDestruct;
- pcc->pc.print = genericPrint;
-
- if(cP)
- pcc->comment = Safe_strdup(cP);
- else
- pcc->comment = NULL;
-
- return ( (pCode *)pcc);
-
+
+ pCodeComment *pcc ;
+
+ pcc = Safe_calloc(1,sizeof(pCodeComment));
+
+ pcc->pc.type = PC_COMMENT;
+ pcc->pc.prev = pcc->pc.next = NULL;
+ pcc->pc.id = PCodeID();
+ //pcc->pc.from = pcc->pc.to = pcc->pc.label = NULL;
+ pcc->pc.pb = NULL;
+
+ pcc->pc.destruct = genericDestruct;
+ pcc->pc.print = genericPrint;
+
+ if(cP)
+ pcc->comment = Safe_strdup(cP);
+ else
+ pcc->comment = NULL;
+
+ return ( (pCode *)pcc);
+
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-pCode *newpCodeFunction(char *mod,char *f)
+pCode *newpCodeFunction(char *mod,char *f,int isPublic)
{
- pCodeFunction *pcf;
-
- pcf = Safe_calloc(1,sizeof(pCodeFunction));
- //_ALLOC(pcf,sizeof(pCodeFunction));
-
- pcf->pc.type = PC_FUNCTION;
- pcf->pc.prev = pcf->pc.next = NULL;
- //pcf->pc.from = pcf->pc.to = pcf->pc.label = NULL;
- pcf->pc.pb = NULL;
-
- // pcf->pc.analyze = genericAnalyze;
- pcf->pc.destruct = genericDestruct;
- pcf->pc.print = pCodePrintFunction;
-
- pcf->ncalled = 0;
-
- if(mod) {
- //_ALLOC_ATOMIC(pcf->modname,strlen(mod)+1);
- pcf->modname = Safe_calloc(1,strlen(mod)+1);
- strcpy(pcf->modname,mod);
- } else
- pcf->modname = NULL;
-
- if(f) {
- //_ALLOC_ATOMIC(pcf->fname,strlen(f)+1);
- pcf->fname = Safe_calloc(1,strlen(f)+1);
- strcpy(pcf->fname,f);
- } else
- pcf->fname = NULL;
-
- return ( (pCode *)pcf);
-
+ pCodeFunction *pcf;
+
+ pcf = Safe_calloc(1,sizeof(pCodeFunction));
+ //_ALLOC(pcf,sizeof(pCodeFunction));
+
+ pcf->pc.type = PC_FUNCTION;
+ pcf->pc.prev = pcf->pc.next = NULL;
+ pcf->pc.id = PCodeID();
+ //pcf->pc.from = pcf->pc.to = pcf->pc.label = NULL;
+ pcf->pc.pb = NULL;
+
+ pcf->pc.destruct = genericDestruct;
+ pcf->pc.print = pCodePrintFunction;
+
+ pcf->ncalled = 0;
+
+ if(mod) {
+ //_ALLOC_ATOMIC(pcf->modname,strlen(mod)+1);
+ pcf->modname = Safe_calloc(1,strlen(mod)+1);
+ strcpy(pcf->modname,mod);
+ } else
+ pcf->modname = NULL;
+
+ if(f) {
+ //_ALLOC_ATOMIC(pcf->fname,strlen(f)+1);
+ pcf->fname = Safe_calloc(1,strlen(f)+1);
+ strcpy(pcf->fname,f);
+ } else
+ pcf->fname = NULL;
+
+ pcf->isPublic = (unsigned)isPublic;
+
+ return ( (pCode *)pcf);
+
}
/*-----------------------------------------------------------------*/
/* newpCodeFlow */
/*-----------------------------------------------------------------*/
-
-void destructpCodeFlow(pCode *pc)
+static void destructpCodeFlow(pCode *pc)
{
- if(!pc || !isPCFL(pc))
- return;
-
- if(PCFL(pc)->uses)
- free(PCFL(pc)->uses);
-/*
- if(PCFL(pc)->from)
- if(PCFL(pc)->to)
-*/
- free(pc);
+ if(!pc || !isPCFL(pc))
+ return;
+
+ /*
+ if(PCFL(pc)->from)
+ if(PCFL(pc)->to)
+ */
+ unlinkpCode(pc);
+
+ deleteSet(&PCFL(pc)->registers);
+ deleteSet(&PCFL(pc)->from);
+ deleteSet(&PCFL(pc)->to);
+ free(pc);
+
}
-pCode *newpCodeFlow(void )
+static pCode *newpCodeFlow(void )
{
- pCodeFlow *pcflow;
-
- //_ALLOC(pcflow,sizeof(pCodeFlow));
- pcflow = Safe_calloc(1,sizeof(pCodeFlow));
-
- pcflow->pc.type = PC_FLOW;
- pcflow->pc.prev = pcflow->pc.next = NULL;
- //pcflow->pc.from = pcflow->pc.to = pcflow->pc.label = NULL;
- pcflow->pc.pb = NULL;
-
- // pcflow->pc.analyze = genericAnalyze;
- pcflow->pc.destruct = destructpCodeFlow;
- pcflow->pc.print = genericPrint;
-
- pcflow->pc.seq = GpcFlowSeq++;
-
- pcflow->nuses = 7;
- pcflow->uses = Safe_calloc(pcflow->nuses, sizeof(set *));
-
- pcflow->from = pcflow->to = NULL;
-
- pcflow->inCond = PCC_NONE;
- pcflow->outCond = PCC_NONE;
-
- pcflow->firstBank = -1;
- pcflow->lastBank = -1;
-
- pcflow->FromConflicts = 0;
- pcflow->ToConflicts = 0;
-
- pcflow->end = NULL;
-
- pcflow->registers = newSet();
-
- return ( (pCode *)pcflow);
-
+ pCodeFlow *pcflow;
+
+ //_ALLOC(pcflow,sizeof(pCodeFlow));
+ pcflow = Safe_calloc(1,sizeof(pCodeFlow));
+
+ pcflow->pc.type = PC_FLOW;
+ pcflow->pc.prev = pcflow->pc.next = NULL;
+ pcflow->pc.pb = NULL;
+
+ pcflow->pc.destruct = destructpCodeFlow;
+ pcflow->pc.print = genericPrint;
+
+ pcflow->pc.seq = GpcFlowSeq++;
+
+ pcflow->from = pcflow->to = NULL;
+
+ pcflow->inCond = PCC_NONE;
+ pcflow->outCond = PCC_NONE;
+
+ pcflow->firstBank = 'U'; /* Undetermined */
+ pcflow->lastBank = 'U'; /* Undetermined */
+
+ pcflow->FromConflicts = 0;
+ pcflow->ToConflicts = 0;
+
+ pcflow->end = NULL;
+
+ pcflow->registers = newSet();
+
+ return ( (pCode *)pcflow);
+
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-pCodeFlowLink *newpCodeFlowLink(pCodeFlow *pcflow)
+static pCodeFlowLink *newpCodeFlowLink(pCodeFlow *pcflow)
{
- pCodeFlowLink *pcflowLink;
-
- pcflowLink = Safe_calloc(1,sizeof(pCodeFlowLink));
-
- pcflowLink->pcflow = pcflow;
- pcflowLink->bank_conflict = 0;
-
- return pcflowLink;
+ pCodeFlowLink *pcflowLink;
+
+ pcflowLink = Safe_calloc(1,sizeof(pCodeFlowLink));
+
+ pcflowLink->pcflow = pcflow;
+ pcflowLink->bank_conflict = 0;
+
+ return pcflowLink;
}
/*-----------------------------------------------------------------*/
/* newpCodeCSource - create a new pCode Source Symbol */
/*-----------------------------------------------------------------*/
-pCode *newpCodeCSource(int ln, char *f, char *l)
+pCode *newpCodeCSource(int ln, char *f, const char *l)
+{
+
+ pCodeCSource *pccs;
+
+ pccs = Safe_calloc(1,sizeof(pCodeCSource));
+
+ pccs->pc.type = PC_CSOURCE;
+ pccs->pc.prev = pccs->pc.next = NULL;
+ pccs->pc.id = PCodeID();
+ pccs->pc.pb = NULL;
+
+ pccs->pc.destruct = genericDestruct;
+ pccs->pc.print = genericPrint;
+
+ pccs->line_number = ln;
+ if(l)
+ pccs->line = Safe_strdup(l);
+ else
+ pccs->line = NULL;
+
+ if(f)
+ pccs->file_name = Safe_strdup(f);
+ else
+ pccs->file_name = NULL;
+
+ return ( (pCode *)pccs);
+
+}
+
+/*******************************************************************/
+/* pic16_newpCodeAsmDir - create a new pCode Assembler Directive */
+/* added by VR 6-Jun-2003 */
+/*******************************************************************/
+
+pCode *newpCodeAsmDir(char *asdir, char *argfmt, ...)
{
+ pCodeAsmDir *pcad;
+ va_list ap;
+ char buffer[512];
+ char *lbp=buffer;
- pCodeCSource *pccs;
-
- pccs = Safe_calloc(1,sizeof(pCodeCSource));
+ pcad = Safe_calloc(1, sizeof(pCodeAsmDir));
+ pcad->pci.pc.type = PC_ASMDIR;
+ pcad->pci.pc.prev = pcad->pci.pc.next = NULL;
+ pcad->pci.pc.pb = NULL;
+ pcad->pci.pc.destruct = genericDestruct;
+ pcad->pci.pc.print = genericPrint;
+
+ if(asdir && *asdir) {
+
+ while(isspace((unsigned char)*asdir))asdir++; // strip any white space from the beginning
- pccs->pc.type = PC_CSOURCE;
- pccs->pc.prev = pccs->pc.next = NULL;
- pccs->pc.pb = NULL;
+ pcad->directive = Safe_strdup( asdir );
+ }
+
+ va_start(ap, argfmt);
- pccs->pc.destruct = genericDestruct;
- pccs->pc.print = genericPrint;
+ memset(buffer, 0, sizeof(buffer));
+ if(argfmt && *argfmt)
+ vsprintf(buffer, argfmt, ap);
- pccs->line_number = ln;
- if(l)
- pccs->line = Safe_strdup(l);
- else
- pccs->line = NULL;
+ va_end(ap);
- if(f)
- pccs->file_name = Safe_strdup(f);
- else
- pccs->file_name = NULL;
+ while(isspace((unsigned char)*lbp))lbp++;
- return ( (pCode *)pccs);
+ if(lbp && *lbp)
+ pcad->arg = Safe_strdup( lbp );
+ return ((pCode *)pcad);
}
+
/*-----------------------------------------------------------------*/
/* pCodeLabelDestruct - free memory used by a label. */
/*-----------------------------------------------------------------*/
static void pCodeLabelDestruct(pCode *pc)
{
-
- if(!pc)
- return;
-
- if((pc->type == PC_LABEL) && PCL(pc)->label)
- free(PCL(pc)->label);
-
- free(pc);
-
+
+ if(!pc)
+ return;
+
+ if((pc->type == PC_LABEL) && PCL(pc)->label)
+ free(PCL(pc)->label);
+
+ free(pc);
+
}
pCode *newpCodeLabel(char *name, int key)
{
-
- char *s = buffer;
- pCodeLabel *pcl;
-
- pcl = Safe_calloc(1,sizeof(pCodeLabel) );
-
- pcl->pc.type = PC_LABEL;
- pcl->pc.prev = pcl->pc.next = NULL;
- //pcl->pc.from = pcl->pc.to = pcl->pc.label = NULL;
- pcl->pc.pb = NULL;
-
- // pcl->pc.analyze = genericAnalyze;
- pcl->pc.destruct = pCodeLabelDestruct;
- pcl->pc.print = pCodePrintLabel;
-
- pcl->key = key;
-
- pcl->label = NULL;
- if(key>0) {
- sprintf(s,"_%05d_DS_",key);
- } else
- s = name;
-
- if(s)
- pcl->label = Safe_strdup(s);
-
-
- return ( (pCode *)pcl);
-
+
+ char *s = buffer;
+ pCodeLabel *pcl;
+
+ pcl = Safe_calloc(1,sizeof(pCodeLabel) );
+
+ pcl->pc.type = PC_LABEL;
+ pcl->pc.prev = pcl->pc.next = NULL;
+ pcl->pc.id = PCodeID();
+ //pcl->pc.from = pcl->pc.to = pcl->pc.label = NULL;
+ pcl->pc.pb = NULL;
+
+ pcl->pc.destruct = pCodeLabelDestruct;
+ pcl->pc.print = pCodePrintLabel;
+
+ pcl->key = key;
+
+ pcl->label = NULL;
+ if(key>0) {
+ sprintf(s,"_%05d_DS_",key);
+ } else
+ s = name;
+
+ if(s)
+ pcl->label = Safe_strdup(s);
+
+ //fprintf(stderr,"newpCodeLabel: key=%d, name=%s\n",key, ((s)?s:""));
+ return ( (pCode *)pcl);
+
}
/*-----------------------------------------------------------------*/
/* newpBlock - create and return a pointer to a new pBlock */
/*-----------------------------------------------------------------*/
-pBlock *newpBlock(void)
+static pBlock *newpBlock(void)
{
-
- pBlock *PpB;
-
- PpB = Safe_calloc(1,sizeof(pBlock) );
- PpB->next = PpB->prev = NULL;
-
- PpB->function_entries = PpB->function_exits = PpB->function_calls = NULL;
- PpB->tregisters = NULL;
- PpB->visited = 0;
-
- return PpB;
-
+
+ pBlock *PpB;
+
+ PpB = Safe_calloc(1,sizeof(pBlock) );
+ PpB->next = PpB->prev = NULL;
+
+ PpB->function_entries = PpB->function_exits = PpB->function_calls = NULL;
+ PpB->tregisters = NULL;
+ PpB->visited = 0;
+ PpB->FlowTree = NULL;
+
+ return PpB;
+
}
/*-----------------------------------------------------------------*/
/* newpCodeChain - create a new chain of pCodes */
/*-----------------------------------------------------------------*
- *
- * This function will create a new pBlock and the pointer to the
- * pCode that is passed in will be the first pCode in the block.
- *-----------------------------------------------------------------*/
+*
+* This function will create a new pBlock and the pointer to the
+* pCode that is passed in will be the first pCode in the block.
+*-----------------------------------------------------------------*/
pBlock *newpCodeChain(memmap *cm,char c, pCode *pc)
{
-
- pBlock *pB = newpBlock();
-
- pB->pcHead = pB->pcTail = pc;
- pB->cmemmap = cm;
- pB->dbName = c;
-
- return pB;
+
+ pBlock *pB = newpBlock();
+
+ pB->pcHead = pB->pcTail = pc;
+ pB->cmemmap = cm;
+ pB->dbName = c;
+
+ return pB;
}
/*-----------------------------------------------------------------*/
pCodeOp *newpCodeOpLabel(char *name, int key)
{
- char *s=NULL;
- static int label_key=-1;
-
- pCodeOp *pcop;
-
- pcop = Safe_calloc(1,sizeof(pCodeOpLabel) );
- pcop->type = PO_LABEL;
-
- pcop->name = NULL;
-
- if(key>0)
- sprintf(s=buffer,"_%05d_DS_",key);
- else
- s = name, key = label_key--;
-
- if(s)
- pcop->name = Safe_strdup(s);
-
- ((pCodeOpLabel *)pcop)->key = key;
-
- return pcop;
+ char *s=NULL;
+ static int label_key=-1;
+
+ pCodeOp *pcop;
+
+ pcop = Safe_calloc(1,sizeof(pCodeOpLabel) );
+ pcop->type = PO_LABEL;
+
+ pcop->name = NULL;
+
+ if(key>0)
+ sprintf(s=buffer,"_%05d_DS_",key);
+ else
+ s = name, key = label_key--;
+
+ PCOLAB(pcop)->offset = 0;
+ if(s)
+ pcop->name = Safe_strdup(s);
+
+ ((pCodeOpLabel *)pcop)->key = key;
+
+ //fprintf(stderr,"newpCodeOpLabel: key=%d, name=%s\n",key,((s)?s:""));
+ return pcop;
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
pCodeOp *newpCodeOpLit(int lit)
{
- char *s = buffer;
- pCodeOp *pcop;
-
-
- pcop = Safe_calloc(1,sizeof(pCodeOpLit) );
- pcop->type = PO_LITERAL;
-
- pcop->name = NULL;
- if(lit>=0) {
- sprintf(s,"0x%02x",lit);
- if(s)
- pcop->name = Safe_strdup(s);
- }
-
- ((pCodeOpLit *)pcop)->lit = lit;
-
- return pcop;
+ char *s = buffer;
+ pCodeOp *pcop;
+
+
+ pcop = Safe_calloc(1,sizeof(pCodeOpLit) );
+ pcop->type = PO_LITERAL;
+
+ pcop->name = NULL;
+ if(lit>=0) {
+ sprintf(s,"0x%02x", (unsigned char)lit);
+ if(s)
+ pcop->name = Safe_strdup(s);
+ }
+
+ ((pCodeOpLit *)pcop)->lit = (unsigned char)lit;
+
+ return pcop;
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-pCodeOp *newpCodeOpImmd(char *name, int offset, int index, int code_space)
+pCodeOp *newpCodeOpImmd(char *name, int offset, int index, int code_space, int is_func)
{
- pCodeOp *pcop;
-
- pcop = Safe_calloc(1,sizeof(pCodeOpImmd) );
- pcop->type = PO_IMMEDIATE;
- if(name) {
- pcop->name = Safe_strdup(name);
- //fprintf(stderr,"%s %s %d\n",__FUNCTION__,name,offset);
- } else {
- pcop->name = NULL;
- }
-
-
- PCOI(pcop)->index = index;
- PCOI(pcop)->offset = offset;
- PCOI(pcop)->_const = code_space;
-
- return pcop;
+ pCodeOp *pcop;
+
+ pcop = Safe_calloc(1,sizeof(pCodeOpImmd) );
+ pcop->type = PO_IMMEDIATE;
+ if(name) {
+ regs *r = NULL;
+ pcop->name = Safe_strdup(name);
+
+ if(!is_func)
+ r = dirregWithName(name);
+
+ PCOI(pcop)->r = r;
+ if(r) {
+ //fprintf(stderr, " newpCodeOpImmd reg %s exists\n",name);
+ PCOI(pcop)->rIdx = r->rIdx;
+ } else {
+ //fprintf(stderr, " newpCodeOpImmd reg %s doesn't exist\n",name);
+ PCOI(pcop)->rIdx = -1;
+ }
+ //fprintf(stderr,"%s %s %d\n",__FUNCTION__,name,offset);
+ } else {
+ pcop->name = NULL;
+ }
+
+ PCOI(pcop)->index = index;
+ PCOI(pcop)->offset = offset;
+ PCOI(pcop)->_const = code_space;
+ PCOI(pcop)->_function = is_func;
+
+ return pcop;
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
pCodeOp *newpCodeOpWild(int id, pCodeWildBlock *pcwb, pCodeOp *subtype)
{
- char *s = buffer;
- pCodeOp *pcop;
-
-
- if(!pcwb || !subtype) {
- fprintf(stderr, "Wild opcode declaration error: %s-%d\n",__FILE__,__LINE__);
- exit(1);
- }
-
- pcop = Safe_calloc(1,sizeof(pCodeOpWild));
- pcop->type = PO_WILD;
- sprintf(s,"%%%d",id);
- pcop->name = Safe_strdup(s);
-
- PCOW(pcop)->id = id;
- PCOW(pcop)->pcwb = pcwb;
- PCOW(pcop)->subtype = subtype;
- PCOW(pcop)->matched = NULL;
-
- return pcop;
+ char *s = buffer;
+ pCodeOp *pcop;
+
+
+ if(!pcwb || !subtype) {
+ fprintf(stderr, "Wild opcode declaration error: %s-%d\n",__FILE__,__LINE__);
+ exit(1);
+ }
+
+ pcop = Safe_calloc(1,sizeof(pCodeOpWild));
+ pcop->type = PO_WILD;
+ sprintf(s,"%%%d",id);
+ pcop->name = Safe_strdup(s);
+
+ PCOW(pcop)->id = id;
+ PCOW(pcop)->pcwb = pcwb;
+ PCOW(pcop)->subtype = subtype;
+ PCOW(pcop)->matched = NULL;
+
+ return pcop;
}
-
/*-----------------------------------------------------------------*/
+/* Find a symbol with matching name */
/*-----------------------------------------------------------------*/
-pCodeOp *newpCodeOpBit(char *s, int bit, int inBitSpace)
+static symbol *symFindWithName(memmap * map, const char *name)
{
- pCodeOp *pcop;
-
- pcop = Safe_calloc(1,sizeof(pCodeOpRegBit) );
- pcop->type = PO_GPR_BIT;
- if(s)
- pcop->name = Safe_strdup(s);
- else
- pcop->name = NULL;
-
- PCORB(pcop)->bit = bit;
- PCORB(pcop)->inBitSpace = inBitSpace;
+ symbol *sym;
+
+ for (sym = setFirstItem(map->syms); sym; sym = setNextItem (map->syms)) {
+ if (sym->rname && (strcmp(sym->rname,name)==0))
+ return sym;
+ }
+ return 0;
+}
- return pcop;
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+pCodeOp *newpCodeOpBit(char *name, int ibit, int inBitSpace)
+{
+ pCodeOp *pcop;
+ struct regs *r = 0;
+
+ pcop = Safe_calloc(1,sizeof(pCodeOpRegBit) );
+ pcop->type = PO_GPR_BIT;
+
+ PCORB(pcop)->bit = ibit;
+ PCORB(pcop)->inBitSpace = inBitSpace;
+
+ if (name) r = regFindWithName(name);
+ if (!r) {
+ // Register has not been allocated - check for symbol information
+ symbol *sym;
+ sym = symFindWithName(bit, name);
+ if (!sym) sym = symFindWithName(sfrbit, name);
+ if (!sym) sym = symFindWithName(sfr, name);
+ if (!sym) sym = symFindWithName(reg, name);
+ // Hack to fix accesses to _INTCON_bits (e.g. GIE=0), see #1579535.
+ // XXX: This ignores nesting levels, but works for globals...
+ if (!sym) sym = findSym(SymbolTab, NULL, name);
+ if (!sym && name && name[0] == '_') sym = findSym(SymbolTab, NULL, &name[1]);
+ if (sym) {
+ r = allocNewDirReg(sym->etype,name);
+ }
+ }
+ if (r) {
+ pcop->name = NULL;
+ PCOR(pcop)->r = r;
+ PCOR(pcop)->rIdx = r->rIdx;
+ } else {
+ pcop->name = Safe_strdup(name);
+ PCOR(pcop)->r = NULL;
+ PCOR(pcop)->rIdx = 0;
+ }
+ return pcop;
}
/*-----------------------------------------------------------------*
- * pCodeOp *newpCodeOpReg(int rIdx) - allocate a new register
- *
- * If rIdx >=0 then a specific register from the set of registers
- * will be selected. If rIdx <0, then a new register will be searched
- * for.
- *-----------------------------------------------------------------*/
-
-pCodeOp *newpCodeOpReg(int rIdx)
+* pCodeOp *newpCodeOpReg(int rIdx) - allocate a new register
+*
+* If rIdx >=0 then a specific register from the set of registers
+* will be selected. If rIdx <0, then a new register will be searched
+* for.
+*-----------------------------------------------------------------*/
+
+static pCodeOp *newpCodeOpReg(int rIdx)
{
- pCodeOp *pcop;
-
- pcop = Safe_calloc(1,sizeof(pCodeOpReg) );
-
- pcop->name = NULL;
-
- if(rIdx >= 0) {
- PCOR(pcop)->rIdx = rIdx;
- PCOR(pcop)->r = pic14_regWithIdx(rIdx);
- } else {
- PCOR(pcop)->r = pic14_findFreeReg(REG_GPR);
-
- if(PCOR(pcop)->r)
- PCOR(pcop)->rIdx = PCOR(pcop)->r->rIdx;
- //fprintf(stderr, "newpcodeOpReg - rIdx = %d\n", PCOR(pcop)->r->rIdx);
- }
-
- pcop->type = PCOR(pcop)->r->pc_type;
-
- return pcop;
+ pCodeOp *pcop;
+
+ pcop = Safe_calloc(1,sizeof(pCodeOpReg) );
+
+ pcop->name = NULL;
+
+ if(rIdx >= 0) {
+ PCOR(pcop)->rIdx = rIdx;
+ PCOR(pcop)->r = pic14_regWithIdx(rIdx);
+ } else {
+ PCOR(pcop)->r = pic14_findFreeReg(REG_GPR);
+
+ if(PCOR(pcop)->r)
+ PCOR(pcop)->rIdx = PCOR(pcop)->r->rIdx;
+ }
+
+ if(PCOR(pcop)->r)
+ pcop->type = PCOR(pcop)->r->pc_type;
+
+ return pcop;
}
pCodeOp *newpCodeOpRegFromStr(char *name)
{
- pCodeOp *pcop;
-
- pcop = Safe_calloc(1,sizeof(pCodeOpReg) );
- PCOR(pcop)->r = allocRegByName(name, 1);
- PCOR(pcop)->rIdx = PCOR(pcop)->r->rIdx;
- pcop->type = PCOR(pcop)->r->pc_type;
- pcop->name = PCOR(pcop)->r->name;
+ pCodeOp *pcop;
+
+ pcop = Safe_calloc(1,sizeof(pCodeOpReg) );
+ PCOR(pcop)->r = allocRegByName(name, 1);
+ PCOR(pcop)->rIdx = PCOR(pcop)->r->rIdx;
+ pcop->type = PCOR(pcop)->r->pc_type;
+ pcop->name = PCOR(pcop)->r->name;
+
+ return pcop;
+}
- return pcop;
+static pCodeOp *newpCodeOpStr(char *name)
+{
+ pCodeOp *pcop;
+
+ pcop = Safe_calloc(1,sizeof(pCodeOpStr));
+ pcop->type = PO_STR;
+ pcop->name = Safe_strdup(name);
+
+ PCOS(pcop)->isPublic = 0;
+
+ return pcop;
}
+
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
pCodeOp *newpCodeOp(char *name, PIC_OPTYPE type)
{
- pCodeOp *pcop;
-
- switch(type) {
- case PO_BIT:
- case PO_GPR_BIT:
- pcop = newpCodeOpBit(name, -1,0);
- break;
-
- case PO_LITERAL:
- pcop = newpCodeOpLit(-1);
- break;
-
- case PO_LABEL:
- pcop = newpCodeOpLabel(NULL,-1);
- break;
- case PO_GPR_TEMP:
- pcop = newpCodeOpReg(-1);
- break;
-
- default:
- pcop = Safe_calloc(1,sizeof(pCodeOp) );
- pcop->type = type;
- if(name)
- pcop->name = Safe_strdup(name);
- else
- pcop->name = NULL;
- }
-
- return pcop;
+ pCodeOp *pcop;
+
+ switch(type) {
+ case PO_BIT:
+ case PO_GPR_BIT:
+ pcop = newpCodeOpBit(name, -1,0);
+ break;
+
+ case PO_LITERAL:
+ pcop = newpCodeOpLit(-1);
+ break;
+
+ case PO_LABEL:
+ pcop = newpCodeOpLabel(NULL,-1);
+ break;
+
+ case PO_GPR_TEMP:
+ pcop = newpCodeOpReg(-1);
+ break;
+
+ case PO_GPR_POINTER:
+ case PO_GPR_REGISTER:
+ if(name)
+ pcop = newpCodeOpRegFromStr(name);
+ else
+ pcop = newpCodeOpReg(-1);
+ break;
+
+ case PO_STR:
+ pcop = newpCodeOpStr(name);
+ break;
+
+ default:
+ pcop = Safe_calloc(1,sizeof(pCodeOp) );
+ pcop->type = type;
+ if(name)
+ pcop->name = Safe_strdup(name);
+ else
+ pcop->name = NULL;
+ }
+
+ return pcop;
}
/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void pCodeConstString(char *name, char *value)
-{
- pBlock *pb;
-
- // fprintf(stderr, " %s %s %s\n",__FUNCTION__,name,value);
-
- if(!name || !value)
- return;
-
- pb = newpCodeChain(NULL, 'P',newpCodeCharP("; Starting pCode block"));
-
- addpBlock(pb);
-
- sprintf(buffer,"; %s = %s",name,value);
-
- addpCode2pBlock(pb,newpCodeCharP(buffer));
- addpCode2pBlock(pb,newpCodeLabel(name,-1));
-
- do {
- addpCode2pBlock(pb,newpCode(POC_RETLW,newpCodeOpLit(*value)));
- }while (*value++);
-
-
-}
-
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void pCodeReadCodeTable(void)
-{
- pBlock *pb;
-
- fprintf(stderr, " %s\n",__FUNCTION__);
-
- pb = newpCodeChain(NULL, 'P',newpCodeCharP("; Starting pCode block"));
-
- addpBlock(pb);
-
- addpCode2pBlock(pb,newpCodeCharP("; ReadCodeTable - built in function"));
- addpCode2pBlock(pb,newpCodeCharP("; Inputs: temp1,temp2 = code pointer"));
- addpCode2pBlock(pb,newpCodeCharP("; Outpus: W (from RETLW at temp2:temp1)"));
- addpCode2pBlock(pb,newpCodeLabel("ReadCodeTable:",-1));
-
- addpCode2pBlock(pb,newpCode(POC_MOVFW,newpCodeOpRegFromStr("temp2")));
- addpCode2pBlock(pb,newpCode(POC_MOVWF,newpCodeOpRegFromStr("PCLATH")));
- addpCode2pBlock(pb,newpCode(POC_MOVFW,newpCodeOpRegFromStr("temp1")));
- addpCode2pBlock(pb,newpCode(POC_MOVWF,newpCodeOpRegFromStr("PCL")));
-
-
-}
-
-/*-----------------------------------------------------------------*/
-/* addpCode2pBlock - place the pCode into the pBlock linked list */
+/* addpCode2pBlock - place the pCode into the pBlock linked list */
/*-----------------------------------------------------------------*/
void addpCode2pBlock(pBlock *pb, pCode *pc)
{
- if(!pb->pcHead) {
- /* If this is the first pcode to be added to a block that
- * was initialized with a NULL pcode, then go ahead and
- * make this pcode the head and tail */
- pb->pcHead = pb->pcTail = pc;
- } else {
- pb->pcTail->next = pc;
- pc->prev = pb->pcTail;
- //pc->next = NULL;
- pc->pb = pb;
- pb->pcTail = pc;
- }
+
+ if(!pb || !pc)
+ return;
+
+ if(!pb->pcHead) {
+ /* If this is the first pcode to be added to a block that
+ * was initialized with a NULL pcode, then go ahead and
+ * make this pcode the head and tail */
+ pb->pcHead = pb->pcTail = pc;
+ } else {
+ // if(pb->pcTail)
+ pb->pcTail->next = pc;
+
+ pc->prev = pb->pcTail;
+ pc->pb = pb;
+
+ pb->pcTail = pc;
+ }
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
void addpBlock(pBlock *pb)
{
- // fprintf(stderr," Adding pBlock: dbName =%c\n",getpBlock_dbName(pb));
-
- if(!the_pFile) {
- /* First time called, we'll pass through here. */
- //_ALLOC(the_pFile,sizeof(pFile));
- the_pFile = Safe_calloc(1,sizeof(pFile));
- the_pFile->pbHead = the_pFile->pbTail = pb;
- the_pFile->functions = NULL;
- return;
- }
-
- the_pFile->pbTail->next = pb;
- pb->prev = the_pFile->pbTail;
- pb->next = NULL;
- the_pFile->pbTail = pb;
+ // fprintf(stderr," Adding pBlock: dbName =%c\n",getpBlock_dbName(pb));
+
+ if(!the_pFile) {
+ /* First time called, we'll pass through here. */
+ //_ALLOC(the_pFile,sizeof(pFile));
+ the_pFile = Safe_calloc(1,sizeof(pFile));
+ the_pFile->pbHead = the_pFile->pbTail = pb;
+ the_pFile->functions = NULL;
+ return;
+ }
+
+ the_pFile->pbTail->next = pb;
+ pb->prev = the_pFile->pbTail;
+ pb->next = NULL;
+ the_pFile->pbTail = pb;
}
/*-----------------------------------------------------------------*/
/* removepBlock - remove a pBlock from the pFile */
/*-----------------------------------------------------------------*/
-void removepBlock(pBlock *pb)
+static void removepBlock(pBlock *pb)
{
- pBlock *pbs;
-
- if(!the_pFile)
- return;
-
-
- //fprintf(stderr," Removing pBlock: dbName =%c\n",getpBlock_dbName(pb));
-
- for(pbs = the_pFile->pbHead; pbs; pbs = pbs->next) {
- if(pbs == pb) {
-
- if(pbs == the_pFile->pbHead)
- the_pFile->pbHead = pbs->next;
-
- if (pbs == the_pFile->pbTail)
- the_pFile->pbTail = pbs->prev;
-
- if(pbs->next)
- pbs->next->prev = pbs->prev;
-
- if(pbs->prev)
- pbs->prev->next = pbs->next;
-
- return;
-
- }
- }
-
- fprintf(stderr, "Warning: call to %s:%s didn't find pBlock\n",__FILE__,__FUNCTION__);
-
+ pBlock *pbs;
+
+ if(!the_pFile)
+ return;
+
+
+ //fprintf(stderr," Removing pBlock: dbName =%c\n",getpBlock_dbName(pb));
+
+ for(pbs = the_pFile->pbHead; pbs; pbs = pbs->next) {
+ if(pbs == pb) {
+
+ if(pbs == the_pFile->pbHead)
+ the_pFile->pbHead = pbs->next;
+
+ if (pbs == the_pFile->pbTail)
+ the_pFile->pbTail = pbs->prev;
+
+ if(pbs->next)
+ pbs->next->prev = pbs->prev;
+
+ if(pbs->prev)
+ pbs->prev->next = pbs->next;
+
+ return;
+
+ }
+ }
+
+ fprintf(stderr, "Warning: call to %s:%s didn't find pBlock\n",__FILE__,__FUNCTION__);
+
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
void printpCode(FILE *of, pCode *pc)
{
-
- if(!pc || !of)
- return;
-
- if(pc->print) {
- pc->print(of,pc);
- return;
- }
-
- fprintf(of,"warning - unable to print pCode\n");
+
+ if(!pc || !of)
+ return;
+
+ if(pc->print) {
+ pc->print(of,pc);
+ return;
+ }
+
+ fprintf(of,"warning - unable to print pCode\n");
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
void printpBlock(FILE *of, pBlock *pb)
{
- pCode *pc;
-
- if(!pb)
- return;
-
- if(!of)
- of = stderr;
-
- for(pc = pb->pcHead; pc; pc = pc->next)
- printpCode(of,pc);
+ pCode *pc;
+
+ if(!pb)
+ return;
+
+ if(!of)
+ of = stderr;
+
+ for(pc = pb->pcHead; pc; pc = pc->next) {
+ printpCode(of,pc);
+
+ if (isPCI(pc))
+ {
+ if (isPCI(pc) && (PCI(pc)->op == POC_PAGESEL || PCI(pc)->op == POC_BANKSEL)) {
+ pcode_doubles++;
+ } else {
+ pcode_insns++;
+ }
+ }
+ } // for
}
void unlinkpCode(pCode *pc)
{
-
-
- if(pc) {
+
+
+ if(pc) {
#ifdef PCODE_DEBUG
- fprintf(stderr,"Unlinking: ");
- printpCode(stderr, pc);
+ fprintf(stderr,"Unlinking: ");
+ printpCode(stderr, pc);
#endif
- if(pc->prev)
- pc->prev->next = pc->next;
- if(pc->next)
- pc->next->prev = pc->prev;
+ if(pc->prev)
+ pc->prev->next = pc->next;
+ if(pc->next)
+ pc->next->prev = pc->prev;
- pc->prev = pc->next = NULL;
- }
+#if 0
+ /* RN: I believe this should be right here, but this did not
+ * cure the bug I was hunting... */
+ /* must keep labels -- attach to following instruction */
+ if (isPCI(pc) && PCI(pc)->label && pc->next)
+ {
+ pCodeInstruction *pcnext = PCI(findNextInstruction (pc->next));
+ if (pcnext)
+ {
+ pBranchAppend (pcnext->label, PCI(pc)->label);
+ }
+ }
+#endif
+ pc->prev = pc->next = NULL;
+ }
}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+
static void genericDestruct(pCode *pc)
{
- //fprintf(stderr,"warning, calling default pCode destructor\n");
-
- unlinkpCode(pc);
+
+ unlinkpCode(pc);
+
+ if(isPCI(pc)) {
+ /* For instructions, tell the register (if there's one used)
+ * that it's no longer needed */
+ regs *reg = getRegFromInstruction(pc);
+ if(reg)
+ deleteSetItem (&(reg->reglives.usedpCodes),pc);
+ }
+
+ /* Instead of deleting the memory used by this pCode, mark
+ * the object as bad so that if there's a pointer to this pCode
+ * dangling around somewhere then (hopefully) when the type is
+ * checked we'll catch it.
+ */
+
+ pc->type = PC_BAD;
+
+ addpCode2pBlock(pb_dead_pcodes, pc);
+
+ //free(pc);
+
+}
- free(pc);
+/*-----------------------------------------------------------------*/
+/* Copies the pCodeInstruction flow pointer from source pCode */
+/*-----------------------------------------------------------------*/
+static void CopyFlow(pCodeInstruction *pcd, pCode *pcs) {
+ pCode *p;
+ pCodeFlow *pcflow = 0;
+ for (p=pcs; p; p=p->prev) {
+ if (isPCI(p)) {
+ pcflow = PCI(p)->pcflow;
+ break;
+ }
+ if (isPCF(p)) {
+ pcflow = (pCodeFlow*)p;
+ break;
+ }
+ }
+ PCI(pcd)->pcflow = pcflow;
}
-
/*-----------------------------------------------------------------*/
+/* pCodeInsertAfter - splice in the pCode chain starting with pc2 */
+/* into the pCode chain containing pc1 */
/*-----------------------------------------------------------------*/
-void pBlockRegs(FILE *of, pBlock *pb)
+void pCodeInsertAfter(pCode *pc1, pCode *pc2)
{
-
- regs *r;
-
- r = setFirstItem(pb->tregisters);
- while (r) {
- r = setNextItem(pb->tregisters);
- }
+
+ if(!pc1 || !pc2)
+ return;
+
+ pc2->next = pc1->next;
+ if(pc1->next)
+ pc1->next->prev = pc2;
+
+ pc2->pb = pc1->pb;
+ pc2->prev = pc1;
+ pc1->next = pc2;
+
+ /* If this is an instrution type propogate the flow */
+ if (isPCI(pc2))
+ CopyFlow(PCI(pc2),pc1);
}
+/*------------------------------------------------------------------*/
+/* pCodeInsertBefore - splice in the pCode chain starting with pc2 */
+/* into the pCode chain containing pc1 */
+/*------------------------------------------------------------------*/
+void pCodeInsertBefore(pCode *pc1, pCode *pc2)
+{
+
+ if(!pc1 || !pc2)
+ return;
+
+ pc2->prev = pc1->prev;
+ if(pc1->prev)
+ pc1->prev->next = pc2;
+
+ pc2->pb = pc1->pb;
+ pc2->next = pc1;
+ pc1->prev = pc2;
+
+ /* If this is an instrution type propogate the flow */
+ if (isPCI(pc2))
+ CopyFlow(PCI(pc2),pc1);
+}
/*-----------------------------------------------------------------*/
+/* pCodeOpCopy - copy a pcode operator */
/*-----------------------------------------------------------------*/
-char *get_op(pCodeOp *pcop,char *buffer, int size)
+pCodeOp *pCodeOpCopy(pCodeOp *pcop)
{
- regs *r;
- static char b[50];
- char *s;
- int use_buffer = 1; // copy the string to the passed buffer pointer
-
- if(!buffer) {
- buffer = b;
- size = sizeof(b);
- use_buffer = 0; // Don't bother copying the string to the buffer.
- }
-
- if(pcop) {
- switch(pcop->type) {
- case PO_INDF:
- case PO_FSR:
- if(use_buffer) {
- SAFE_snprintf(&buffer,&size,"%s",PCOR(pcop)->r->name);
- return buffer;
- }
- return PCOR(pcop)->r->name;
- break;
- case PO_GPR_TEMP:
- r = pic14_regWithIdx(PCOR(pcop)->r->rIdx);
-
- if(use_buffer) {
- SAFE_snprintf(&buffer,&size,"%s",r->name);
- return buffer;
- }
-
- return r->name;
-
+ pCodeOp *pcopnew=NULL;
+
+ if(!pcop)
+ return NULL;
+
+ switch(pcop->type) {
+ case PO_NONE:
+ case PO_STR:
+ pcopnew = Safe_calloc (1, sizeof (pCodeOp));
+ memcpy (pcopnew, pcop, sizeof (pCodeOp));
+ break;
+
+ case PO_W:
+ case PO_STATUS:
+ case PO_FSR:
+ case PO_INDF:
+ case PO_INTCON:
+ case PO_GPR_REGISTER:
+ case PO_GPR_TEMP:
+ case PO_GPR_POINTER:
+ case PO_SFR_REGISTER:
+ case PO_PCL:
+ case PO_PCLATH:
+ case PO_DIR:
+ //DFPRINTF((stderr,"pCodeOpCopy GPR register\n"));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpReg) );
+ memcpy (pcopnew, pcop, sizeof (pCodeOpReg));
+ DFPRINTF((stderr," register index %d\n", PCOR(pcop)->r->rIdx));
+ break;
+
+ case PO_LITERAL:
+ //DFPRINTF((stderr,"pCodeOpCopy lit\n"));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpLit) );
+ memcpy (pcopnew, pcop, sizeof (pCodeOpLit));
+ break;
+
+ case PO_IMMEDIATE:
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpImmd) );
+ memcpy (pcopnew, pcop, sizeof (pCodeOpImmd));
+ break;
+
+ case PO_GPR_BIT:
+ case PO_CRY:
+ case PO_BIT:
+ //DFPRINTF((stderr,"pCodeOpCopy bit\n"));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpRegBit) );
+ memcpy (pcopnew, pcop, sizeof (pCodeOpRegBit));
+ break;
+
+ case PO_LABEL:
+ //DFPRINTF((stderr,"pCodeOpCopy label\n"));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpLabel) );
+ memcpy (pcopnew, pcop, sizeof(pCodeOpLabel));
+ break;
+
+ case PO_WILD:
+ /* Here we expand the wild card into the appropriate type: */
+ /* By recursively calling pCodeOpCopy */
+ //DFPRINTF((stderr,"pCodeOpCopy wild\n"));
+ if(PCOW(pcop)->matched)
+ pcopnew = pCodeOpCopy(PCOW(pcop)->matched);
+ else {
+ // Probably a label
+ pcopnew = pCodeOpCopy(PCOW(pcop)->subtype);
+ pcopnew->name = Safe_strdup(PCOW(pcop)->pcwb->vars[PCOW(pcop)->id]);
+ //DFPRINTF((stderr,"copied a wild op named %s\n",pcopnew->name));
+ }
+
+ return pcopnew;
+ break;
+
+ default:
+ assert ( !"unhandled pCodeOp type copied" );
+ break;
+ } // switch
+
+ if(pcop->name)
+ pcopnew->name = Safe_strdup(pcop->name);
+ else
+ pcopnew->name = NULL;
+
+ return pcopnew;
+}
- case PO_IMMEDIATE:
- s = buffer;
+/*-----------------------------------------------------------------*/
+/* popCopyReg - copy a pcode operator */
+/*-----------------------------------------------------------------*/
+pCodeOp *popCopyReg(pCodeOpReg *pc)
+{
+ pCodeOpReg *pcor;
+
+ pcor = Safe_calloc(1,sizeof(pCodeOpReg) );
+ pcor->pcop.type = pc->pcop.type;
+ if(pc->pcop.name) {
+ if(!(pcor->pcop.name = Safe_strdup(pc->pcop.name)))
+ fprintf(stderr,"oops %s %d",__FILE__,__LINE__);
+ } else
+ pcor->pcop.name = NULL;
+
+ if (pcor->pcop.type == PO_IMMEDIATE){
+ PCOL(pcor)->lit = PCOL(pc)->lit;
+ } else {
+ pcor->r = pc->r;
+ pcor->rIdx = pc->rIdx;
+ if (pcor->r)
+ pcor->r->wasUsed=1;
+ }
+ //DEBUGpic14_emitcode ("; ***","%s , copying %s, rIdx=%d",__FUNCTION__,pc->pcop.name,pc->rIdx);
+
+ return PCOP(pcor);
+}
- if(PCOI(pcop)->_const) {
+/*-----------------------------------------------------------------*/
+/* pCodeInstructionCopy - copy a pCodeInstructionCopy */
+/*-----------------------------------------------------------------*/
+pCode *pCodeInstructionCopy(pCodeInstruction *pci,int invert)
+{
+ pCodeInstruction *new_pci;
+
+ if(invert)
+ new_pci = PCI(newpCode(pci->inverted_op,pci->pcop));
+ else
+ new_pci = PCI(newpCode(pci->op,pci->pcop));
+
+ new_pci->pc.pb = pci->pc.pb;
+ new_pci->from = pci->from;
+ new_pci->to = pci->to;
+ new_pci->label = pci->label;
+ new_pci->pcflow = pci->pcflow;
+
+ return PCODE(new_pci);
+}
- if( PCOI(pcop)->offset && PCOI(pcop)->offset<4) {
- SAFE_snprintf(&s,&size,"(((%s+%d) >> %d)&0xff)",
- pcop->name,
- PCOI(pcop)->index,
- 8 * PCOI(pcop)->offset );
- } else
- SAFE_snprintf(&s,&size,"LOW(%s+%d)",pcop->name,PCOI(pcop)->index);
- } else {
-
- if( PCOI(pcop)->index) { // && PCOI(pcc->pcop)->offset<4) {
- SAFE_snprintf(&s,&size,"(%s + %d)",
- pcop->name,
- PCOI(pcop)->index );
- } else
- SAFE_snprintf(&s,&size,"%s",pcop->name);
- }
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+void pCodeDeleteChain(pCode *f,pCode *t)
+{
+ pCode *pc;
+
+ while(f && f!=t) {
+ DFPRINTF((stderr,"delete pCode:\n"));
+ pc = f->next;
+ //f->print(stderr,f);
+ //f->delete(f); this dumps core...
+ f = pc;
+ }
+}
- return buffer;
-
- case PO_DIR:
- s = buffer;
- //size = sizeof(buffer);
- if( PCOR(pcop)->instance) {
- SAFE_snprintf(&s,&size,"(%s + %d)",
- pcop->name,
- PCOR(pcop)->instance );
- //fprintf(stderr,"PO_DIR %s\n",buffer);
- } else
- SAFE_snprintf(&s,&size,"%s",pcop->name);
- return buffer;
-
- default:
- if (pcop->name) {
- if(use_buffer) {
- SAFE_snprintf(&buffer,&size,"%s",pcop->name);
- return buffer;
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+char *get_op(pCodeOp *pcop,char *buffer, size_t size)
+{
+ regs *r;
+ static char b[50];
+ char *s;
+ int use_buffer = 1; // copy the string to the passed buffer pointer
+
+ if(!buffer) {
+ buffer = b;
+ size = sizeof(b);
+ use_buffer = 0; // Don't bother copying the string to the buffer.
+ }
+
+ if(pcop) {
+ switch(pcop->type) {
+ case PO_INDF:
+ case PO_FSR:
+ if(use_buffer) {
+ SNPRINTF(buffer,size,"%s",PCOR(pcop)->r->name);
+ return buffer;
+ }
+ return pcop->name;
+ break;
+ case PO_GPR_TEMP:
+ if (PCOR(pcop)->r->type == REG_STK)
+ r = typeRegWithIdx(PCOR(pcop)->r->rIdx,REG_STK,1);
+ else
+ r = pic14_regWithIdx(PCOR(pcop)->r->rIdx);
+
+ if(use_buffer) {
+ SNPRINTF(buffer,size,"%s",r->name);
+ return buffer;
+ }
+
+ return r->name;
+ break;
+
+ case PO_IMMEDIATE:
+ s = buffer;
+ if(PCOI(pcop)->_const) {
+
+ if( PCOI(pcop)->offset >= 0 && PCOI(pcop)->offset<4) {
+ switch(PCOI(pcop)->offset) {
+ case 0:
+ SNPRINTF(s,size,"low (%s+%d)",pcop->name, PCOI(pcop)->index);
+ break;
+ case 1:
+ SNPRINTF(s,size,"high (%s+%d)",pcop->name, PCOI(pcop)->index);
+ break;
+ case 2:
+ SNPRINTF(s,size,"0x%02x",PCOI(pcop)->_const ? GPTRTAG_CODE : GPTRTAG_DATA);
+ break;
+ default:
+ fprintf (stderr, "PO_IMMEDIATE/_const/offset=%d\n", PCOI(pcop)->offset);
+ assert ( !"offset too large" );
+ SNPRINTF(s,size,"(((%s+%d) >> %d)&0xff)",
+ pcop->name,
+ PCOI(pcop)->index,
+ 8 * PCOI(pcop)->offset );
+ }
+ } else
+ SNPRINTF(s,size,"LOW (%s+%d)",pcop->name,PCOI(pcop)->index);
+ } else {
+ if( !PCOI(pcop)->offset) { // && PCOI(pcc->pcop)->offset<4)
+ SNPRINTF(s,size,"(%s + %d)",
+ pcop->name,
+ PCOI(pcop)->index);
+ } else {
+ switch(PCOI(pcop)->offset) {
+ case 0:
+ SNPRINTF(s,size,"(%s + %d)",pcop->name, PCOI(pcop)->index);
+ break;
+ case 1:
+ SNPRINTF(s,size,"high (%s + %d)",pcop->name, PCOI(pcop)->index);
+ break;
+ case 2:
+ SNPRINTF(s,size,"0x%02x",PCOI(pcop)->_const ? GPTRTAG_CODE : GPTRTAG_DATA);
+ break;
+ default:
+ fprintf (stderr, "PO_IMMEDIATE/mutable/offset=%d\n", PCOI(pcop)->offset);
+ assert ( !"offset too large" );
+ SNPRINTF(s,size,"((%s + %d) >> %d)&0xff",pcop->name, PCOI(pcop)->index, 8*PCOI(pcop)->offset);
+ break;
+ }
+ }
+ }
+ return buffer;
+ break;
+
+ case PO_DIR:
+ s = buffer;
+ if( PCOR(pcop)->instance) {
+ SNPRINTF(s,size,"(%s + %d)",
+ pcop->name,
+ PCOR(pcop)->instance );
+ } else
+ SNPRINTF(s,size,"%s",pcop->name);
+ return buffer;
+ break;
+
+ case PO_LABEL:
+ s = buffer;
+ if (pcop->name) {
+ if(PCOLAB(pcop)->offset == 1)
+ SNPRINTF(s,size,"HIGH(%s)",pcop->name);
+ else
+ SNPRINTF(s,size,"%s",pcop->name);
+ }
+ return buffer;
+ break;
+
+ case PO_GPR_BIT:
+ if(PCOR(pcop)->r) {
+ if(use_buffer) {
+ SNPRINTF(buffer,size,"%s",PCOR(pcop)->r->name);
+ return buffer;
+ }
+ return PCOR(pcop)->r->name;
+ }
+ /* fall through to the default case */
+
+ default:
+ if(pcop->name) {
+ if(use_buffer) {
+ SNPRINTF(buffer,size,"%s",pcop->name);
+ return buffer;
+ }
+ return pcop->name;
+ }
+ }
}
- return pcop->name;
- }
- }
- }
+ printf("PIC port internal warning: (%s:%d(%s)) %s not found\n",
+ __FILE__, __LINE__, __FUNCTION__,
+ pCodeOpType(pcop));
- return "NO operand";
+ return "NO operand";
}
/*-----------------------------------------------------------------*/
static char *get_op_from_instruction( pCodeInstruction *pcc)
{
-
- if(pcc )
- return get_op(pcc->pcop,NULL,0);
-
- return ("ERROR Null: "__FUNCTION__);
-
+
+ if(pcc)
+ return get_op(pcc->pcop,NULL,0);
+
+ return ("ERROR Null: get_op_from_instruction");
+
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void pCodeOpPrint(FILE *of, pCodeOp *pcop)
{
-
- fprintf(of,"pcodeopprint- not implemented\n");
+ fprintf(of,"pcodeopprint- not implemented\n");
}
/*-----------------------------------------------------------------*/
+/* pCode2str - convert a pCode instruction to string */
/*-----------------------------------------------------------------*/
-char *pCode2str(char *str, int size, pCode *pc)
+char *pCode2str(char *str, size_t size, pCode *pc)
{
- char *s = str;
-
- switch(pc->type) {
-
- case PC_OPCODE:
-
- SAFE_snprintf(&s,&size, "\t%s\t", PCI(pc)->mnemonic);
-
- if( (PCI(pc)->num_ops >= 1) && (PCI(pc)->pcop)) {
-
- if(PCI(pc)->isBitInst) {
- if(PCI(pc)->pcop->type == PO_GPR_BIT) {
- if( (((pCodeOpRegBit *)(PCI(pc)->pcop))->inBitSpace) )
- SAFE_snprintf(&s,&size,"(%s >> 3), (%s & 7)",
- PCI(pc)->pcop->name ,
- PCI(pc)->pcop->name );
- else
- SAFE_snprintf(&s,&size,"%s,%d", get_op_from_instruction(PCI(pc)),
- (((pCodeOpRegBit *)(PCI(pc)->pcop))->bit ));
- } else if(PCI(pc)->pcop->type == PO_GPR_BIT) {
- SAFE_snprintf(&s,&size,"%s,%d", get_op_from_instruction(PCI(pc)),PCORB(PCI(pc)->pcop)->bit);
- }else
- SAFE_snprintf(&s,&size,"%s,0 ; ?bug", get_op_from_instruction(PCI(pc)));
- //PCI(pc)->pcop->t.bit );
- } else {
-
- if(PCI(pc)->pcop->type == PO_GPR_BIT) {
- if( PCI(pc)->num_ops == 2)
- SAFE_snprintf(&s,&size,"(%s >> 3),%c",get_op_from_instruction(PCI(pc)),((PCI(pc)->isModReg) ? 'F':'W'));
- else
- SAFE_snprintf(&s,&size,"(1 << (%s & 7))",get_op_from_instruction(PCI(pc)));
-
- }else {
- SAFE_snprintf(&s,&size,"%s",get_op_from_instruction(PCI(pc)));
-
- if( PCI(pc)->num_ops == 2)
- SAFE_snprintf(&s,&size,",%c", ( (PCI(pc)->isModReg) ? 'F':'W'));
- }
- }
-
+ char *s = str;
+
+ switch(pc->type) {
+
+ case PC_OPCODE:
+
+ SNPRINTF(s,size, "\t%s\t", PCI(pc)->mnemonic);
+ size -= strlen(s);
+ s += strlen(s);
+
+ if( (PCI(pc)->num_ops >= 1) && (PCI(pc)->pcop)) {
+ if(PCI(pc)->isBitInst) {
+ if(PCI(pc)->pcop->type == PO_GPR_BIT) {
+ char *name = PCI(pc)->pcop->name;
+ if (!name)
+ name = PCOR(PCI(pc)->pcop)->r->name;
+ if( (((pCodeOpRegBit *)(PCI(pc)->pcop))->inBitSpace) )
+ SNPRINTF(s,size,"(%s >> 3), (%s & 7)", name, name);
+ else
+ SNPRINTF(s,size,"%s,%d", name, (((pCodeOpRegBit *)(PCI(pc)->pcop))->bit)&7);
+ } else if(PCI(pc)->pcop->type == PO_GPR_BIT) {
+ SNPRINTF(s,size,"%s,%d", get_op_from_instruction(PCI(pc)),PCORB(PCI(pc)->pcop)->bit);
+ } else
+ SNPRINTF(s,size,"%s,0 ; ?bug", get_op_from_instruction(PCI(pc)));
+ } else {
+ if(PCI(pc)->pcop->type == PO_GPR_BIT) {
+ if( PCI(pc)->num_ops == 2)
+ SNPRINTF(s,size,"(%s >> 3),%c",get_op_from_instruction(PCI(pc)),((PCI(pc)->isModReg) ? 'F':'W'));
+ else
+ SNPRINTF(s,size,"(1 << (%s & 7))",get_op_from_instruction(PCI(pc)));
+ } else {
+ SNPRINTF(s,size,"%s",get_op_from_instruction(PCI(pc)));
+ size -= strlen(s);
+ s += strlen(s);
+ if( PCI(pc)->num_ops == 2)
+ SNPRINTF(s,size,",%c", ( (PCI(pc)->isModReg) ? 'F':'W'));
+ }
+ }
+ }
+ break;
+
+ case PC_COMMENT:
+ /* assuming that comment ends with a \n */
+ SNPRINTF(s,size,";%s", ((pCodeComment *)pc)->comment);
+ break;
+
+ case PC_INLINE:
+ /* assuming that inline code ends with a \n */
+ SNPRINTF(s,size,"%s", ((pCodeComment *)pc)->comment);
+ break;
+
+ case PC_LABEL:
+ SNPRINTF(s,size,";label=%s, key=%d\n",PCL(pc)->label,PCL(pc)->key);
+ break;
+ case PC_FUNCTION:
+ SNPRINTF(s,size,";modname=%s,function=%s: id=%d\n",PCF(pc)->modname,PCF(pc)->fname);
+ break;
+ case PC_WILD:
+ SNPRINTF(s,size,";\tWild opcode: id=%d\n",PCW(pc)->id);
+ break;
+ case PC_FLOW:
+ SNPRINTF(s,size,";\t--FLOW change\n");
+ break;
+ case PC_CSOURCE:
+ SNPRINTF(s,size,"%s\t.line\t%d; \"%s\"\t%s\n",(options.debug?"":";"),PCCS(pc)->line_number, PCCS(pc)->file_name, PCCS(pc)->line);
+ break;
+ case PC_ASMDIR:
+ if(PCAD(pc)->directive) {
+ SNPRINTF(s,size,"\t%s%s%s\n", PCAD(pc)->directive, PCAD(pc)->arg?"\t":"", PCAD(pc)->arg?PCAD(pc)->arg:"");
+ } else if(PCAD(pc)->arg) {
+ /* special case to handle inline labels without a tab */
+ SNPRINTF(s,size,"%s\n", PCAD(pc)->arg);
+ }
+ break;
+
+ case PC_BAD:
+ SNPRINTF(s,size,";A bad pCode is being used\n");
}
- break;
-
- case PC_COMMENT:
- /* assuming that comment ends with a \n */
- SAFE_snprintf(&s,&size,";%s", ((pCodeComment *)pc)->comment);
- break;
-
- case PC_INLINE:
- /* assuming that inline code ends with a \n */
- SAFE_snprintf(&s,&size,"%s", ((pCodeComment *)pc)->comment);
- break;
-
- case PC_LABEL:
- SAFE_snprintf(&s,&size,";label=%s, key=%d\n",PCL(pc)->label,PCL(pc)->key);
- break;
- case PC_FUNCTION:
- SAFE_snprintf(&s,&size,";modname=%s,function=%s: id=%d\n",PCF(pc)->modname,PCF(pc)->fname);
- break;
- case PC_WILD:
- SAFE_snprintf(&s,&size,";\tWild opcode: id=%d\n",PCW(pc)->id);
- break;
- case PC_FLOW:
- SAFE_snprintf(&s,&size,";\t--FLOW change\n");
- break;
- case PC_CSOURCE:
- SAFE_snprintf(&s,&size,";#CSRC\t%s %d\n; %s\n", PCCS(pc)->file_name, PCCS(pc)->line_number, PCCS(pc)->line);
- break;
-
- }
-
- return str;
+ return str;
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
static void genericPrint(FILE *of, pCode *pc)
{
-
if(!pc || !of)
return;
case PC_INLINE:
fprintf(of,"%s\n", ((pCodeComment *)pc)->comment);
- break;
+ break;
case PC_OPCODE:
// If the opcode has a label, print that first
{
- pBranch *pbl = PCI(pc)->label;
+ char str[256];
+ pCodeInstruction *pci = PCI(pc);
+ pBranch *pbl = pci->label;
while(pbl && pbl->pc) {
- if(pbl->pc->type == PC_LABEL)
- pCodePrintLabel(of, pbl->pc);
- pbl = pbl->next;
+ if(pbl->pc->type == PC_LABEL)
+ pCodePrintLabel(of, pbl->pc);
+ pbl = pbl->next;
}
- }
- if(PCI(pc)->cline)
- genericPrint(of,PCODE(PCI(pc)->cline));
+ if(pci->cline)
+ genericPrint(of,PCODE(pci->cline));
+
- {
- char str[256];
-
pCode2str(str, 256, pc);
fprintf(of,"%s",str);
/* Debug */
- fprintf(of, "\t;key=%03x",pc->seq);
- if(PCI(pc)->pcflow)
- fprintf(of,",flow seq=%03x",PCI(pc)->pcflow->pc.seq);
- }
-#if 0
- {
- pBranch *dpb = pc->to; // debug
- while(dpb) {
- switch ( dpb->pc->type) {
- case PC_OPCODE:
- fprintf(of, "\t;%s", PCI(dpb->pc)->mnemonic);
- break;
- case PC_LABEL:
- fprintf(of, "\t;label %d", PCL(dpb->pc)->key);
- break;
- case PC_FUNCTION:
- fprintf(of, "\t;function %s", ( (PCF(dpb->pc)->fname) ? (PCF(dpb->pc)->fname) : "[END]"));
- break;
- case PC_FLOW:
- fprintf(of, "\t;flow");
- break;
- case PC_COMMENT:
- case PC_WILD:
- break;
- }
- dpb = dpb->next;
+ if(debug_verbose) {
+ pCodeOpReg *pcor = PCOR(pci->pcop);
+ fprintf(of, "\t;id=%u,key=%03x,inCond:%x,outCond:%x",pc->id,pc->seq, pci->inCond, pci->outCond);
+ if(pci->pcflow)
+ fprintf(of,",flow seq=%03x",pci->pcflow->pc.seq);
+ if (pcor && pcor->pcop.type==PO_GPR_TEMP && !pcor->r->isFixed)
+ fprintf(of,",rIdx=r0x%X",pcor->rIdx);
}
}
-#endif
fprintf(of,"\n");
break;
fprintf(of,";\tWild opcode: id=%d\n",PCW(pc)->id);
if(PCW(pc)->pci.label)
pCodePrintLabel(of, PCW(pc)->pci.label->pc);
-
+
if(PCW(pc)->operand) {
fprintf(of,";\toperand ");
pCodeOpPrint(of,PCW(pc)->operand );
break;
case PC_FLOW:
- fprintf(of,";<>Start of new flow, seq=%d\n",pc->seq);
+ if(debug_verbose) {
+ fprintf(of,";<>Start of new flow, seq=0x%x",pc->seq);
+ if(PCFL(pc)->ancestor)
+ fprintf(of," ancestor = 0x%x", PCODE(PCFL(pc)->ancestor)->seq);
+ fprintf(of,"\n");
+ fprintf(of,"; from: ");
+ {
+ pCodeFlowLink *link;
+ for (link = setFirstItem(PCFL(pc)->from); link; link = setNextItem (PCFL(pc)->from))
+ {
+ fprintf(of,"%03x ",link->pcflow->pc.seq);
+ }
+ }
+ fprintf(of,"; to: ");
+ {
+ pCodeFlowLink *link;
+ for (link = setFirstItem(PCFL(pc)->to); link; link = setNextItem (PCFL(pc)->to))
+ {
+ fprintf(of,"%03x ",link->pcflow->pc.seq);
+ }
+ }
+ fprintf(of,"\n");
+ }
break;
case PC_CSOURCE:
- fprintf(of,";#CSRC\t%s %d\n; %s\n", PCCS(pc)->file_name, PCCS(pc)->line_number, PCCS(pc)->line);
+ fprintf(of,"%s\t.line\t%d; \"%s\"\t%s\n", (options.debug?"":";"), PCCS(pc)->line_number, PCCS(pc)->file_name, PCCS(pc)->line);
+ break;
+
+ case PC_ASMDIR:
+ {
+ pBranch *pbl = PCAD(pc)->pci.label;
+ while(pbl && pbl->pc) {
+ if(pbl->pc->type == PC_LABEL)
+ pCodePrintLabel(of, pbl->pc);
+ pbl = pbl->next;
+ }
+ }
+ if(PCAD(pc)->directive) {
+ fprintf(of, "\t%s%s%s\n", PCAD(pc)->directive, PCAD(pc)->arg?"\t":"", PCAD(pc)->arg?PCAD(pc)->arg:"");
+ } else
+ if(PCAD(pc)->arg) {
+ /* special case to handle inline labels without tab */
+ fprintf(of, "%s\n", PCAD(pc)->arg);
+ }
break;
+
case PC_LABEL:
default:
fprintf(of,"unknown pCode type %d\n",pc->type);
}
-
}
/*-----------------------------------------------------------------*/
static void pCodePrintFunction(FILE *of, pCode *pc)
{
-
- if(!pc || !of)
- return;
-
- if( ((pCodeFunction *)pc)->modname)
- fprintf(of,"F_%s",((pCodeFunction *)pc)->modname);
-
- if(PCF(pc)->fname) {
- pBranch *exits = PCF(pc)->to;
- int i=0;
- fprintf(of,"%s\t;Function start\n",PCF(pc)->fname);
- while(exits) {
- i++;
- exits = exits->next;
- }
- //if(i) i--;
- fprintf(of,"; %d exit point%c\n",i, ((i==1) ? ' ':'s'));
-
- }else {
- if((PCF(pc)->from &&
- PCF(pc)->from->pc->type == PC_FUNCTION &&
- PCF(PCF(pc)->from->pc)->fname) )
- fprintf(of,"; exit point of %s\n",PCF(PCF(pc)->from->pc)->fname);
- else
- fprintf(of,"; exit point [can't find entry point]\n");
- }
+
+ if(!pc || !of)
+ return;
+
+ if( ((pCodeFunction *)pc)->modname)
+ fprintf(of,"F_%s",((pCodeFunction *)pc)->modname);
+
+ if(PCF(pc)->fname) {
+ pBranch *exits = PCF(pc)->to;
+ int i=0;
+ fprintf(of,"%s\t;Function start\n",PCF(pc)->fname);
+ while(exits) {
+ i++;
+ exits = exits->next;
+ }
+ //if(i) i--;
+ fprintf(of,"; %d exit point%c\n",i, ((i==1) ? ' ':'s'));
+
+ }else {
+ if((PCF(pc)->from &&
+ PCF(pc)->from->pc->type == PC_FUNCTION &&
+ PCF(PCF(pc)->from->pc)->fname) )
+ fprintf(of,"; exit point of %s\n",PCF(PCF(pc)->from->pc)->fname);
+ else
+ fprintf(of,"; exit point [can't find entry point]\n");
+ }
}
+
/*-----------------------------------------------------------------*/
/* pCodePrintLabel - prints label */
/*-----------------------------------------------------------------*/
static void pCodePrintLabel(FILE *of, pCode *pc)
{
+
+ if(!pc || !of)
+ return;
+
+ if(PCL(pc)->label)
+ fprintf(of,"%s\n",PCL(pc)->label);
+ else if (PCL(pc)->key >=0)
+ fprintf(of,"_%05d_DS_:\n",PCL(pc)->key);
+ else
+ fprintf(of,";wild card label: id=%d\n",-PCL(pc)->key);
+
+}
- if(!pc || !of)
- return;
-
- if(PCL(pc)->label)
- fprintf(of,"%s\n",PCL(pc)->label);
- else if (PCL(pc)->key >=0)
- fprintf(of,"_%05d_DS_:\n",PCL(pc)->key);
- else
- fprintf(of,";wild card label: id=%d\n",-PCL(pc)->key);
-
-}
/*-----------------------------------------------------------------*/
/* unlinkpCodeFromBranch - Search for a label in a pBranch and */
/* remove it if it is found. */
{
pBranch *b, *bprev;
-
bprev = NULL;
- if(pcl->type == PC_OPCODE)
+ if(pcl->type == PC_OPCODE || pcl->type == PC_INLINE || pcl->type == PC_ASMDIR)
b = PCI(pcl)->label;
else {
fprintf(stderr, "LINE %d. can't unlink from non opcode\n",__LINE__);
exit(1);
-
}
-
+
//fprintf (stderr, "%s \n",__FUNCTION__);
//pcl->print(stderr,pcl);
//pc->print(stderr,pc);
while(b) {
if(b->pc == pc) {
//fprintf (stderr, "found label\n");
-
+
/* Found a label */
if(bprev) {
- bprev->next = b->next; /* Not first pCode in chain */
- free(b);
+ bprev->next = b->next; /* Not first pCode in chain */
+ free(b);
} else {
- pc->destruct(pc);
- PCI(pcl)->label = b->next; /* First pCode in chain */
- free(b);
+ pc->destruct(pc);
+ PCI(pcl)->label = b->next; /* First pCode in chain */
+ free(b);
}
return; /* A label can't occur more than once */
}
bprev = b;
b = b->next;
}
-
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-static pBranch * pBranchAppend(pBranch *h, pBranch *n)
+pBranch * pBranchAppend(pBranch *h, pBranch *n)
{
- pBranch *b;
-
- if(!h)
- return n;
-
- b = h;
- while(b->next)
- b = b->next;
-
- b->next = n;
+ pBranch *b;
+
+ if(!h)
+ return n;
+
+ if(h == n)
+ return n;
+
+ b = h;
+ while(b->next)
+ b = b->next;
+
+ b->next = n;
+
+ return h;
+
+}
- return h;
-
-}
/*-----------------------------------------------------------------*/
/* pBranchLink - given two pcodes, this function will link them */
/* together through their pBranches */
/*-----------------------------------------------------------------*/
static void pBranchLink(pCodeFunction *f, pCodeFunction *t)
{
- pBranch *b;
-
- // Declare a new branch object for the 'from' pCode.
-
- //_ALLOC(b,sizeof(pBranch));
- b = Safe_calloc(1,sizeof(pBranch));
- b->pc = PCODE(t); // The link to the 'to' pCode.
- b->next = NULL;
-
- f->to = pBranchAppend(f->to,b);
-
- // Now do the same for the 'to' pCode.
-
- //_ALLOC(b,sizeof(pBranch));
- b = Safe_calloc(1,sizeof(pBranch));
- b->pc = PCODE(f);
- b->next = NULL;
-
- t->from = pBranchAppend(t->from,b);
-
-}
-
-#if 0
-/*-----------------------------------------------------------------*/
-/* pBranchFind - find the pBranch in a pBranch chain that contains */
-/* a pCode */
-/*-----------------------------------------------------------------*/
-static pBranch *pBranchFind(pBranch *pb,pCode *pc)
-{
- while(pb) {
-
- if(pb->pc == pc)
- return pb;
-
- pb = pb->next;
- }
-
- return NULL;
-}
-
-/*-----------------------------------------------------------------*/
-/* pCodeUnlink - Unlink the given pCode from its pCode chain. */
-/*-----------------------------------------------------------------*/
-static void pCodeUnlink(pCode *pc)
-{
- pBranch *pb1,*pb2;
- pCode *pc1;
-
- if(!pc->prev || !pc->next) {
- fprintf(stderr,"unlinking bad pCode in %s:%d\n",__FILE__,__LINE__);
- exit(1);
- }
-
- /* first remove the pCode from the chain */
- pc->prev->next = pc->next;
- pc->next->prev = pc->prev;
-
- /* Now for the hard part... */
-
- /* Remove the branches */
-
- pb1 = pc->from;
- while(pb1) {
- pc1 = pb1->pc; /* Get the pCode that branches to the
- * one we're unlinking */
-
- /* search for the link back to this pCode (the one we're
- * unlinking) */
- if(pb2 = pBranchFind(pc1->to,pc)) {
- pb2->pc = pc->to->pc; // make the replacement
-
- /* if the pCode we're unlinking contains multiple 'to'
- * branches (e.g. this a skip instruction) then we need
- * to copy these extra branches to the chain. */
- if(pc->to->next)
- pBranchAppend(pb2, pc->to->next);
- }
-
- pb1 = pb1->next;
- }
-
-
-}
-#endif
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-#if 0
-static void genericAnalyze(pCode *pc)
-{
- switch(pc->type) {
- case PC_WILD:
- case PC_COMMENT:
- return;
- case PC_LABEL:
- case PC_FUNCTION:
- case PC_OPCODE:
- {
- // Go through the pCodes that are in pCode chain and link
- // them together through the pBranches. Note, the pCodes
- // are linked together as a contiguous stream like the
- // assembly source code lines. The linking here mimics this
- // except that comments are not linked in.
- //
- pCode *npc = pc->next;
- while(npc) {
- if(npc->type == PC_OPCODE || npc->type == PC_LABEL) {
- pBranchLink(pc,npc);
- return;
- } else
- npc = npc->next;
- }
- /* reached the end of the pcode chain without finding
- * an instruction we could link to. */
- }
- break;
- case PC_FLOW:
- fprintf(stderr,"analyze PC_FLOW\n");
-
- return;
- }
+ pBranch *b;
+
+ // Declare a new branch object for the 'from' pCode.
+
+ //_ALLOC(b,sizeof(pBranch));
+ b = Safe_calloc(1,sizeof(pBranch));
+ b->pc = PCODE(t); // The link to the 'to' pCode.
+ b->next = NULL;
+
+ f->to = pBranchAppend(f->to,b);
+
+ // Now do the same for the 'to' pCode.
+
+ //_ALLOC(b,sizeof(pBranch));
+ b = Safe_calloc(1,sizeof(pBranch));
+ b->pc = PCODE(f);
+ b->next = NULL;
+
+ t->from = pBranchAppend(t->from,b);
+
}
-#endif
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-int compareLabel(pCode *pc, pCodeOpLabel *pcop_label)
+static int compareLabel(pCode *pc, pCodeOpLabel *pcop_label)
{
pBranch *pbr;
-
+
if(pc->type == PC_LABEL) {
if( ((pCodeLabel *)pc)->key == pcop_label->key)
return TRUE;
}
- if(pc->type == PC_OPCODE) {
+ if(pc->type == PC_OPCODE || pc->type == PC_ASMDIR) {
pbr = PCI(pc)->label;
while(pbr) {
if(pbr->pc->type == PC_LABEL) {
- if( ((pCodeLabel *)(pbr->pc))->key == pcop_label->key)
- return TRUE;
+ if( ((pCodeLabel *)(pbr->pc))->key == pcop_label->key)
+ return TRUE;
}
pbr = pbr->next;
}
}
-
+
return FALSE;
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-int checkLabel(pCode *pc)
+static int checkLabel(pCode *pc)
{
- pBranch *pbr;
-
- if(pc && isPCI(pc)) {
- pbr = PCI(pc)->label;
- while(pbr) {
- if(isPCL(pbr->pc) && (PCL(pbr->pc)->key >= 0))
- return TRUE;
-
- pbr = pbr->next;
- }
- }
-
- return FALSE;
+ pBranch *pbr;
+
+ if(pc && isPCI(pc)) {
+ pbr = PCI(pc)->label;
+ while(pbr) {
+ if(isPCL(pbr->pc) && (PCL(pbr->pc)->key >= 0))
+ return TRUE;
+
+ pbr = pbr->next;
+ }
+ }
+
+ return FALSE;
}
/*-----------------------------------------------------------------*/
/* findLabelinpBlock - Search the pCode for a particular label */
/*-----------------------------------------------------------------*/
-pCode * findLabelinpBlock(pBlock *pb,pCodeOpLabel *pcop_label)
-{
- pCode *pc;
-
- if(!pb)
- return NULL;
-
- for(pc = pb->pcHead; pc; pc = pc->next)
- if(compareLabel(pc,pcop_label))
- return pc;
-
- return NULL;
-}
-
-/*-----------------------------------------------------------------*/
-/* findLabel - Search the pCode for a particular label */
-/*-----------------------------------------------------------------*/
-pCode * findLabel(pCodeOpLabel *pcop_label)
+static pCode * findLabelinpBlock(pBlock *pb,pCodeOpLabel *pcop_label)
{
- pBlock *pb;
- pCode *pc;
-
- if(!the_pFile)
- return NULL;
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if( (pc = findLabelinpBlock(pb,pcop_label)) != NULL)
- return pc;
- }
-
- fprintf(stderr,"Couldn't find label %s", pcop_label->pcop.name);
- return NULL;
+ pCode *pc;
+
+ if(!pb)
+ return NULL;
+
+ for(pc = pb->pcHead; pc; pc = pc->next)
+ if(compareLabel(pc,pcop_label))
+ return pc;
+
+ return NULL;
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
pCode * findNextpCode(pCode *pc, PC_TYPE pct)
{
-
- while(pc) {
- if(pc->type == pct)
- return pc;
-
- pc = pc->next;
- }
-
- return NULL;
+
+ while(pc) {
+ if(pc->type == pct)
+ return pc;
+
+ pc = pc->next;
+ }
+
+ return NULL;
}
+#if 0
/*-----------------------------------------------------------------*/
/* findPrevpCode - given a pCode, find the previous of type 'pct' */
/* in the linked list */
/*-----------------------------------------------------------------*/
-pCode * findPrevpCode(pCode *pc, PC_TYPE pct)
+static pCode * findPrevpCode(pCode *pc, PC_TYPE pct)
{
-
- while(pc) {
- if(pc->type == pct)
- return pc;
-
- pc = pc->prev;
- }
-
- return NULL;
+
+ while(pc) {
+ if(pc->type == pct) {
+ /*
+ static unsigned int stop;
+ if (pc->id == 524)
+ stop++; // Place break point here
+ */
+ return pc;
+ }
+
+ pc = pc->prev;
+ }
+
+ return NULL;
}
+#endif
+
/*-----------------------------------------------------------------*/
/* findNextInstruction - given a pCode, find the next instruction */
/* in the linked list */
pCode *pc = pci;
while(pc) {
- if((pc->type == PC_OPCODE) || (pc->type == PC_WILD))
+ if((pc->type == PC_OPCODE)
+ || (pc->type == PC_WILD)
+ || (pc->type == PC_ASMDIR))
return pc;
#ifdef PCODE_DEBUG
/*-----------------------------------------------------------------*/
pCode * findPrevInstruction(pCode *pci)
{
- return findPrevpCode(pci, PC_OPCODE);
-}
-
-/*-----------------------------------------------------------------*/
-/* findFunctionEnd - given a pCode find the end of the function */
-/* that contains it */
-/*-----------------------------------------------------------------*/
-pCode * findFunctionEnd(pCode *pc)
-{
+ pCode *pc = pci;
while(pc) {
- if(pc->type == PC_FUNCTION && !(PCF(pc)->fname))
+
+ if((pc->type == PC_OPCODE)
+ || (pc->type == PC_WILD)
+ || (pc->type == PC_ASMDIR))
return pc;
+
- pc = pc->next;
+#ifdef PCODE_DEBUG
+ fprintf(stderr,"pic16_findPrevInstruction: ");
+ printpCode(stderr, pc);
+#endif
+ pc = pc->prev;
}
- fprintf(stderr,"Couldn't find function end\n");
+ //fprintf(stderr,"Couldn't find instruction\n");
return NULL;
}
-#if 0
/*-----------------------------------------------------------------*/
-/* AnalyzeLabel - if the pCode is a label, then merge it with the */
-/* instruction with which it is associated. */
/*-----------------------------------------------------------------*/
-static void AnalyzeLabel(pCode *pc)
+regs * getRegFromInstruction(pCode *pc)
{
+ regs *r;
+ if(!pc ||
+ !isPCI(pc) ||
+ !PCI(pc)->pcop ||
+ PCI(pc)->num_ops == 0 )
+ return NULL;
+
+ switch(PCI(pc)->pcop->type) {
+ case PO_STATUS:
+ case PO_FSR:
+ case PO_INDF:
+ case PO_INTCON:
+ case PO_BIT:
+ case PO_GPR_TEMP:
+ case PO_SFR_REGISTER:
+ case PO_PCL:
+ case PO_PCLATH:
+ return PCOR(PCI(pc)->pcop)->r;
+
+ case PO_GPR_REGISTER:
+ case PO_GPR_BIT:
+ case PO_DIR:
+ r = PCOR(PCI(pc)->pcop)->r;
+ if (r)
+ return r;
+ return dirregWithName(PCI(pc)->pcop->name);
+
+ case PO_LITERAL:
+ break;
+
+ case PO_IMMEDIATE:
+ r = PCOI(PCI(pc)->pcop)->r;
+ if (r)
+ return r;
+ return dirregWithName(PCI(pc)->pcop->name);
+
+ default:
+ break;
+ }
+
+ return NULL;
+
+}
- pCodeUnlink(pc);
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void AnalyzepBlock(pBlock *pb)
+{
+ pCode *pc;
+
+ if(!pb)
+ return;
+
+ /* Find all of the registers used in this pBlock
+ * by looking at each instruction and examining it's
+ * operands
+ */
+ for(pc = pb->pcHead; pc; pc = pc->next) {
+
+ /* Is this an instruction with operands? */
+ if(pc->type == PC_OPCODE && PCI(pc)->pcop) {
+
+ if((PCI(pc)->pcop->type == PO_GPR_TEMP)
+ || ((PCI(pc)->pcop->type == PO_GPR_BIT) && PCOR(PCI(pc)->pcop)->r && (PCOR(PCI(pc)->pcop)->r->pc_type == PO_GPR_TEMP))) {
+
+ /* Loop through all of the registers declared so far in
+ this block and see if we find this one there */
+
+ regs *r = setFirstItem(pb->tregisters);
+
+ while(r) {
+ if((r->rIdx == PCOR(PCI(pc)->pcop)->r->rIdx) && (r->type == PCOR(PCI(pc)->pcop)->r->type)) {
+ PCOR(PCI(pc)->pcop)->r = r;
+ break;
+ }
+ r = setNextItem(pb->tregisters);
+ }
+
+ if(!r) {
+ /* register wasn't found */
+ //r = Safe_calloc(1, sizeof(regs));
+ //memcpy(r,PCOR(PCI(pc)->pcop)->r, sizeof(regs));
+ //addSet(&pb->tregisters, r);
+ addSet(&pb->tregisters, PCOR(PCI(pc)->pcop)->r);
+ //PCOR(PCI(pc)->pcop)->r = r;
+ //fprintf(stderr,"added register to pblock: reg %d\n",r->rIdx);
+ }/* else
+ fprintf(stderr,"found register in pblock: reg %d\n",r->rIdx);
+ */
+ }
+ if(PCI(pc)->pcop->type == PO_GPR_REGISTER) {
+ if(PCOR(PCI(pc)->pcop)->r) {
+ pic14_allocWithIdx (PCOR(PCI(pc)->pcop)->r->rIdx);
+ DFPRINTF((stderr,"found register in pblock: reg 0x%x\n",PCOR(PCI(pc)->pcop)->r->rIdx));
+ } else {
+ if(PCI(pc)->pcop->name)
+ fprintf(stderr,"ERROR: %s is a NULL register\n",PCI(pc)->pcop->name );
+ else
+ fprintf(stderr,"ERROR: NULL register\n");
+ }
+ }
+ }
+
+
+ }
}
-#endif
-#if 0
-static void AnalyzeGOTO(pCode *pc)
+/*-----------------------------------------------------------------*/
+/* */
+/*-----------------------------------------------------------------*/
+static void InsertpFlow(pCode *pc, pCode **pflow)
{
-
- pBranchLink(pc,findLabel( (pCodeOpLabel *) (PCI(pc)->pcop) ));
-
+ if(*pflow)
+ PCFL(*pflow)->end = pc;
+
+ if(!pc || !pc->next)
+ return;
+
+ *pflow = newpCodeFlow();
+ pCodeInsertAfter(pc, *pflow);
}
-static void AnalyzeSKIP(pCode *pc)
+/*-----------------------------------------------------------------*/
+/* BuildFlow(pBlock *pb) - examine the code in a pBlock and build */
+/* the flow blocks. */
+/*
+* BuildFlow inserts pCodeFlow objects into the pCode chain at each
+* point the instruction flow changes.
+*/
+/*-----------------------------------------------------------------*/
+static void BuildFlow(pBlock *pb)
{
-
- pBranchLink(pc,findNextInstruction(pc->next));
- pBranchLink(pc,findNextInstruction(pc->next->next));
-
+ pCode *pc;
+ pCode *last_pci=NULL;
+ pCode *pflow=NULL;
+ int seq = 0;
+
+ if(!pb)
+ return;
+
+ //fprintf (stderr,"build flow start seq %d ",GpcFlowSeq);
+ /* Insert a pCodeFlow object at the beginning of a pBlock */
+
+ InsertpFlow(pb->pcHead, &pflow);
+
+ //pflow = newpCodeFlow(); /* Create a new Flow object */
+ //pflow->next = pb->pcHead; /* Make the current head the next object */
+ //pb->pcHead->prev = pflow; /* let the current head point back to the flow object */
+ //pb->pcHead = pflow; /* Make the Flow object the head */
+ //pflow->pb = pb;
+
+ for( pc = findNextInstruction(pb->pcHead);
+ pc != NULL;
+ pc=findNextInstruction(pc)) {
+
+ pc->seq = seq++;
+ PCI(pc)->pcflow = PCFL(pflow);
+
+ //fprintf(stderr," build: ");
+ //pc->print(stderr, pc);
+ //pflow->print(stderr,pflow);
+
+ if (checkLabel(pc)) {
+
+ /* This instruction marks the beginning of a
+ * new flow segment */
+
+ pc->seq = 0;
+ seq = 1;
+
+ /* If the previous pCode is not a flow object, then
+ * insert a new flow object. (This check prevents
+ * two consecutive flow objects from being insert in
+ * the case where a skip instruction preceeds an
+ * instruction containing a label.) */
+
+ last_pci = findPrevInstruction (pc->prev);
+
+ if(last_pci && (PCI(last_pci)->pcflow == PCFL(pflow)))
+ InsertpFlow(last_pci, &pflow);
+
+ PCI(pc)->pcflow = PCFL(pflow);
+
+ }
+
+ if(isPCI_SKIP(pc)) {
+
+ /* The two instructions immediately following this one
+ * mark the beginning of a new flow segment */
+
+ while(pc && isPCI_SKIP(pc)) {
+
+ PCI(pc)->pcflow = PCFL(pflow);
+ pc->seq = seq-1;
+ seq = 1;
+
+ InsertpFlow(pc, &pflow);
+ pc=findNextInstruction(pc->next);
+ }
+
+ seq = 0;
+
+ if(!pc)
+ break;
+
+ PCI(pc)->pcflow = PCFL(pflow);
+ pc->seq = 0;
+ InsertpFlow(pc, &pflow);
+
+ } else if ( isPCI_BRANCH(pc) && !checkLabel(findNextInstruction(pc->next))) {
+
+ InsertpFlow(pc, &pflow);
+ seq = 0;
+
+ }
+
+ last_pci = pc;
+ pc = pc->next;
+ }
+
+ //fprintf (stderr,",end seq %d",GpcFlowSeq);
+ if(pflow)
+ PCFL(pflow)->end = pb->pcTail;
}
-static void AnalyzeRETURN(pCode *pc)
+/*-------------------------------------------------------------------*/
+/* unBuildFlow(pBlock *pb) - examine the code in a pBlock and build */
+/* the flow blocks. */
+/*
+* unBuildFlow removes pCodeFlow objects from a pCode chain
+*/
+/*-----------------------------------------------------------------*/
+static void unBuildFlow(pBlock *pb)
{
-
- // branch_link(pc,findFunctionEnd(pc->next));
-
+ pCode *pc,*pcnext;
+
+ if(!pb)
+ return;
+
+ pc = pb->pcHead;
+
+ while(pc) {
+ pcnext = pc->next;
+
+ if(isPCI(pc)) {
+
+ pc->seq = 0;
+ if(PCI(pc)->pcflow) {
+ //free(PCI(pc)->pcflow);
+ PCI(pc)->pcflow = NULL;
+ }
+
+ } else if(isPCFL(pc) )
+ pc->destruct(pc);
+
+ pc = pcnext;
+ }
+
+
}
+#if 0
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void dumpCond(int cond)
+{
+
+ static char *pcc_str[] = {
+ //"PCC_NONE",
+ "PCC_REGISTER",
+ "PCC_C",
+ "PCC_Z",
+ "PCC_DC",
+ "PCC_W",
+ "PCC_EXAMINE_PCOP",
+ "PCC_REG_BANK0",
+ "PCC_REG_BANK1",
+ "PCC_REG_BANK2",
+ "PCC_REG_BANK3"
+ };
+
+ int ncond = sizeof(pcc_str) / sizeof(char *);
+ int i,j;
+
+ fprintf(stderr, "0x%04X\n",cond);
+
+ for(i=0,j=1; i<ncond; i++, j<<=1)
+ if(cond & j)
+ fprintf(stderr, " %s\n",pcc_str[i]);
+
+}
#endif
+#if 0
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-regs * getRegFromInstruction(pCode *pc)
+static void FlowStats(pCodeFlow *pcflow)
{
- if(!pc ||
- !isPCI(pc) ||
- !PCI(pc)->pcop ||
- PCI(pc)->num_ops == 0 )
- return NULL;
-
- switch(PCI(pc)->pcop->type) {
- case PO_INDF:
- case PO_FSR:
- return typeRegWithIdx (PCOR(PCI(pc)->pcop)->rIdx, REG_SFR, 0);
-
- case PO_BIT:
- case PO_GPR_TEMP:
- //fprintf(stderr, "getRegFromInstruction - bit or temp\n");
- return PCOR(PCI(pc)->pcop)->r;
-
- case PO_IMMEDIATE:
- //fprintf(stderr, "getRegFromInstruction - immediate\n");
- return NULL; // PCOR(PCI(pc)->pcop)->r;
-
- case PO_GPR_BIT:
- return PCOR(PCI(pc)->pcop)->r;
-
- case PO_DIR:
- //fprintf(stderr, "getRegFromInstruction - dir\n");
- return PCOR(PCI(pc)->pcop)->r;
- case PO_LITERAL:
- //fprintf(stderr, "getRegFromInstruction - literal\n");
- break;
-
- default:
- //fprintf(stderr, "getRegFromInstruction - unknown reg type %d\n",PCI(pc)->pcop->type);
- //genericPrint(stderr, pc);
- break;
- }
-
- return NULL;
+
+ pCode *pc;
+
+ if(!isPCFL(pcflow))
+ return;
+
+ fprintf(stderr, " FlowStats - flow block (seq=%d)\n", pcflow->pc.seq);
+
+ pc = findNextpCode(PCODE(pcflow), PC_OPCODE);
+
+ if(!pc) {
+ fprintf(stderr, " FlowStats - empty flow (seq=%d)\n", pcflow->pc.seq);
+ return;
+ }
+
+
+ fprintf(stderr, " FlowStats inCond: ");
+ dumpCond(pcflow->inCond);
+ fprintf(stderr, " FlowStats outCond: ");
+ dumpCond(pcflow->outCond);
+
+}
+#endif
+/*-----------------------------------------------------------------*
+* int isBankInstruction(pCode *pc) - examine the pCode *pc to determine
+* if it affects the banking bits.
+*
+* return: -1 == Banking bits are unaffected by this pCode.
+*
+* return: > 0 == Banking bits are affected.
+*
+* If the banking bits are affected, then the returned value describes
+* which bits are affected and how they're affected. The lower half
+* of the integer maps to the bits that are affected, the upper half
+* to whether they're set or cleared.
+*
+*-----------------------------------------------------------------*/
+/*
+static int isBankInstruction(pCode *pc)
+{
+ regs *reg;
+ int bank = -1;
+
+ if(!isPCI(pc))
+ return -1;
+
+ if( ( (reg = getRegFromInstruction(pc)) != NULL) && isSTATUS_REG(reg)) {
+
+ // Check to see if the register banks are changing
+ if(PCI(pc)->isModReg) {
+
+ pCodeOp *pcop = PCI(pc)->pcop;
+ switch(PCI(pc)->op) {
+
+ case POC_BSF:
+ if(PCORB(pcop)->bit == PIC_RP0_BIT) {
+ //fprintf(stderr, " isBankInstruction - Set RP0\n");
+ return SET_BANK_BIT | PIC_RP0_BIT;
+ }
+
+ if(PCORB(pcop)->bit == PIC_RP1_BIT) {
+ //fprintf(stderr, " isBankInstruction - Set RP1\n");
+ return CLR_BANK_BIT | PIC_RP0_BIT;
+ }
+ break;
+
+ case POC_BCF:
+ if(PCORB(pcop)->bit == PIC_RP0_BIT) {
+ //fprintf(stderr, " isBankInstruction - Clr RP0\n");
+ return CLR_BANK_BIT | PIC_RP1_BIT;
+ }
+ if(PCORB(pcop)->bit == PIC_RP1_BIT) {
+ //fprintf(stderr, " isBankInstruction - Clr RP1\n");
+ return CLR_BANK_BIT | PIC_RP1_BIT;
+ }
+ break;
+ default:
+ //fprintf(stderr, " isBankInstruction - Status register is getting Modified by:\n");
+ //genericPrint(stderr, pc);
+ ;
+ }
+ }
+
+ }
+
+ return bank;
}
+*/
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-
-void AnalyzepBlock(pBlock *pb)
+/*
+static void FillFlow(pCodeFlow *pcflow)
{
- pCode *pc;
+ pCode *pc;
+ int cur_bank;
+
+ if(!isPCFL(pcflow))
+ return;
+
+ // fprintf(stderr, " FillFlow - flow block (seq=%d)\n", pcflow->pc.seq);
+
+ pc = findNextpCode(PCODE(pcflow), PC_OPCODE);
+
+ if(!pc) {
+ //fprintf(stderr, " FillFlow - empty flow (seq=%d)\n", pcflow->pc.seq);
+ return;
+ }
+
+ cur_bank = -1;
+
+ do {
+ isBankInstruction(pc);
+ pc = pc->next;
+ } while (pc && (pc != pcflow->end) && !isPCFL(pc));
+ / *
+ if(!pc ) {
+ fprintf(stderr, " FillFlow - Bad end of flow\n");
+ } else {
+ fprintf(stderr, " FillFlow - Ending flow with\n ");
+ pc->print(stderr,pc);
+ }
+
+ fprintf(stderr, " FillFlow inCond: ");
+ dumpCond(pcflow->inCond);
+ fprintf(stderr, " FillFlow outCond: ");
+ dumpCond(pcflow->outCond);
+ * /
+}
+*/
- if(!pb)
- return;
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void LinkFlow_pCode(pCodeInstruction *from, pCodeInstruction *to)
+{
+ pCodeFlowLink *fromLink, *toLink;
+#if 0
+ fprintf(stderr, "%s: linking ", __FUNCTION__ );
+ if (from) from->pc.print(stderr, &from->pc);
+ else fprintf(stderr, "(null)");
+ fprintf(stderr, " -(%u)-> with -(%u)-> ",
+ from && from->pcflow ? from->pcflow->pc.seq : 0,
+ to && to->pcflow ? to->pcflow->pc.seq : 0);
+ if (to) to->pc.print(stderr, &to->pc);
+ else fprintf(stderr, "(null)");
+#endif
- /* Find all of the registers used in this pBlock
- * by looking at each instruction and examining it's
- * operands
- */
- for(pc = pb->pcHead; pc; pc = pc->next) {
+ if(!from || !to || !to->pcflow || !from->pcflow)
+ return;
+
+ fromLink = newpCodeFlowLink(from->pcflow);
+ toLink = newpCodeFlowLink(to->pcflow);
+
+ addSetIfnotP(&(from->pcflow->to), toLink); //to->pcflow);
+ addSetIfnotP(&(to->pcflow->from), fromLink); //from->pcflow);
+
+}
- /* Is this an instruction with operands? */
- if(pc->type == PC_OPCODE && PCI(pc)->pcop) {
+/*-----------------------------------------------------------------*
+* void LinkFlow(pBlock *pb)
+*
+* In BuildFlow, the PIC code has been partitioned into contiguous
+* non-branching segments. In LinkFlow, we determine the execution
+* order of these segments. For example, if one of the segments ends
+* with a skip, then we know that there are two possible flow segments
+* to which control may be passed.
+*-----------------------------------------------------------------*/
+static void LinkFlow(pBlock *pb)
+{
+ pCode *pc=NULL;
+ pCode *pcflow;
+ pCode *pct;
+
+ //fprintf(stderr,"linkflow \n");
+
+ if (!pb) return;
+
+ for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
+ pcflow != NULL;
+ pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
+
+ if(!isPCFL(pcflow))
+ fprintf(stderr, "LinkFlow - pcflow is not a flow object ");
+
+ //fprintf(stderr," link: ");
+ //pcflow->print(stderr,pcflow);
+
+ //FillFlow(PCFL(pcflow));
+
+ /* find last instruction in flow */
+ pc = findPrevInstruction (PCFL(pcflow)->end);
+ if (!pc) {
+ fprintf(stderr, "%s: flow without end (%u)?\n",
+ __FUNCTION__, pcflow->seq );
+ continue;
+ }
+
+ //fprintf(stderr, "LinkFlow - flow block (seq=%d) ", pcflow->seq);
+ //pc->print(stderr, pc);
+ if(isPCI_SKIP(pc)) {
+ //fprintf(stderr, "ends with skip\n");
+ //pc->print(stderr,pc);
+ pct=findNextInstruction(pc->next);
+ LinkFlow_pCode(PCI(pc),PCI(pct));
+ pct=findNextInstruction(pct->next);
+ LinkFlow_pCode(PCI(pc),PCI(pct));
+ continue;
+ }
+
+ if(isPCI_BRANCH(pc)) {
+ pCodeOpLabel *pcol = PCOLAB(PCI(pc)->pcop);
+
+ //fprintf(stderr, "ends with branch\n ");
+ //pc->print(stderr,pc);
+
+ if(!(pcol && isPCOLAB(pcol))) {
+ if((PCI(pc)->op != POC_RETLW)
+ && (PCI(pc)->op != POC_RETURN)
+ && (PCI(pc)->op != POC_CALL)
+ && (PCI(pc)->op != POC_RETFIE) )
+ {
+ pc->print(stderr,pc);
+ fprintf(stderr, "ERROR: %s, branch instruction doesn't have label\n",__FUNCTION__);
+ }
+ } else {
+
+ if( (pct = findLabelinpBlock(pb,pcol)) != NULL)
+ LinkFlow_pCode(PCI(pc),PCI(pct));
+ else
+ fprintf(stderr, "ERROR: %s, couldn't find label. key=%d,lab=%s\n",
+ __FUNCTION__,pcol->key,((PCOP(pcol)->name)?PCOP(pcol)->name:"-"));
+ //fprintf(stderr,"newpCodeOpLabel: key=%d, name=%s\n",key,((s)?s:""));
+ }
+ /* link CALLs to next instruction */
+ if (PCI(pc)->op != POC_CALL) continue;
+ }
+
+ if(isPCI(pc)) {
+ //fprintf(stderr, "ends with non-branching instruction:\n");
+ //pc->print(stderr,pc);
+
+ LinkFlow_pCode(PCI(pc),PCI(findNextInstruction(pc->next)));
+
+ continue;
+ }
+
+ if(pc) {
+ //fprintf(stderr, "ends with unknown\n");
+ //pc->print(stderr,pc);
+ continue;
+ }
+
+ fprintf(stderr, "ends with nothing: ERROR\n");
+
+ }
+}
- if(PCI(pc)->pcop->type == PO_GPR_TEMP) {
+static void pCodeReplace (pCode *old, pCode *new)
+{
+ pCodeInsertAfter (old, new);
+
+ /* special handling for pCodeInstructions */
+ if (isPCI(new) && isPCI(old))
+ {
+ //assert (!PCI(new)->from && !PCI(new)->to && !PCI(new)->label && /*!PCI(new)->pcflow && */!PCI(new)->cline);
+ PCI(new)->from = PCI(old)->from;
+ PCI(new)->to = PCI(old)->to;
+ PCI(new)->label = PCI(old)->label;
+ PCI(new)->pcflow = PCI(old)->pcflow;
+ PCI(new)->cline = PCI(old)->cline;
+ } // if
+
+ old->destruct (old);
+}
- /* Loop through all of the registers declared so far in
- this block and see if we find this one there */
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void addpCodeComment(pCode *pc, const char *fmt, ...)
+{
+ va_list ap;
+ char buffer[4096];
+ pCode *newpc;
+
+ va_start(ap, fmt);
+ if (options.verbose || debug_verbose) {
+ buffer[0] = ';';
+ buffer[1] = ' ';
+ vsprintf(&buffer[2], fmt, ap);
+
+ newpc = newpCodeCharP(&buffer[0]); // strdup's the string
+ pCodeInsertAfter(pc, newpc);
+ }
+ va_end(ap);
+}
- regs *r = setFirstItem(pb->tregisters);
+/*-----------------------------------------------------------------*/
+/* Inserts a new pCodeInstruction before an existing one */
+/*-----------------------------------------------------------------*/
+static void insertPCodeInstruction(pCodeInstruction *pci, pCodeInstruction *new_pci)
+{
+ pCode *pcprev;
- while(r) {
- if(r->rIdx == PCOR(PCI(pc)->pcop)->r->rIdx) {
- PCOR(PCI(pc)->pcop)->r = r;
- break;
- }
- r = setNextItem(pb->tregisters);
+ pcprev = findPrevInstruction(pci->pc.prev);
+
+ pCodeInsertAfter(pci->pc.prev, &new_pci->pc);
+
+ /* Move the label, if there is one */
+
+ if(pci->label) {
+ new_pci->label = pci->label;
+ pci->label = NULL;
}
-
- if(!r) {
- /* register wasn't found */
- //r = Safe_calloc(1, sizeof(regs));
- //memcpy(r,PCOR(PCI(pc)->pcop)->r, sizeof(regs));
- //addSet(&pb->tregisters, r);
- addSet(&pb->tregisters, PCOR(PCI(pc)->pcop)->r);
- //PCOR(PCI(pc)->pcop)->r = r;
- //fprintf(stderr,"added register to pblock: reg %d\n",r->rIdx);
- }/* else
- fprintf(stderr,"found register in pblock: reg %d\n",r->rIdx);
- */
- }
- if(PCI(pc)->pcop->type == PO_GPR_REGISTER) {
- if(PCOR(PCI(pc)->pcop)->r) {
- pic14_allocWithIdx (PCOR(PCI(pc)->pcop)->r->rIdx);
- DFPRINTF((stderr,"found register in pblock: reg 0x%x\n",PCOR(PCI(pc)->pcop)->r->rIdx));
- } else {
- if(PCI(pc)->pcop->name)
- fprintf(stderr,"ERROR: %s is a NULL register\n",PCI(pc)->pcop->name );
- else
- fprintf(stderr,"ERROR: NULL register\n");
+
+ /* Move the C code comment, if there is one */
+
+ if(pci->cline) {
+ new_pci->cline = pci->cline;
+ pci->cline = NULL;
+ }
+
+ /* The new instruction has the same pcflow block */
+ new_pci->pcflow = pci->pcflow;
+
+ /* Arrrrg: is pci's previous instruction is a skip, we need to
+ * change that into a jump (over pci and the new instruction) ... */
+ if (pcprev && isPCI_SKIP(pcprev))
+ {
+ symbol *lbl = newiTempLabel (NULL);
+ pCode *label = newpCodeLabel (NULL, lbl->key);
+ pCode *jump = newpCode(POC_GOTO, newpCodeOpLabel(NULL, lbl->key));
+
+ pCodeInsertAfter (pcprev, jump);
+
+ // Yuck: Cannot simply replace INCFSZ/INCFSZW/DECFSZ/DECFSZW
+ // We replace them with INCF/INCFW/DECF/DECFW followed by 'BTFSS STATUS, Z'
+ switch (PCI(pcprev)->op) {
+ case POC_INCFSZ:
+ case POC_INCFSZW:
+ case POC_DECFSZ:
+ case POC_DECFSZW:
+ // These are turned into non-skipping instructions, so
+ // insert 'BTFSC STATUS, Z' after pcprev
+ pCodeInsertAfter (jump->prev, newpCode(POC_BTFSC, popCopyGPR2Bit(PCOP(&pc_status), PIC_Z_BIT)));
+ break;
+ default:
+ // no special actions required
+ break;
+ }
+ pCodeReplace (pcprev, pCodeInstructionCopy (PCI(pcprev), 1));
+ pcprev = NULL;
+ pCodeInsertAfter((pCode*)pci, label);
+ pBlockMergeLabels(pci->pc.pb);
}
- }
- }
-
-
- }
}
/*-----------------------------------------------------------------*/
-/* */
/*-----------------------------------------------------------------*/
-#define PCI_HAS_LABEL(x) ((x) && (PCI(x)->label != NULL))
-
-void InsertpFlow(pCode *pc, pCode **pflow)
+static int insertBankSel(pCodeInstruction *pci, const char *name)
{
- PCFL(*pflow)->end = pc;
-
- if(!pc || !pc->next)
- return;
+ pCode *new_pc;
+
+ pCodeOp *pcop;
- *pflow = newpCodeFlow();
- pCodeInsertAfter(pc, *pflow);
+ // Never BANKSEL STATUS, this breaks all kinds of code (e.g., interrupt handlers).
+ if (!strcmp("STATUS", name) || !strcmp("_STATUS", name)) return 0;
+
+ pcop = popCopyReg(PCOR(pci->pcop));
+ pcop->type = PO_GPR_REGISTER; // Sometimes the type is set to legacy 8051 - so override it
+ if (pcop->name == 0)
+ pcop->name = strdup(name);
+ new_pc = newpCode(POC_BANKSEL, pcop);
+
+ insertPCodeInstruction(pci, PCI(new_pc));
+ return 1;
}
-/*-----------------------------------------------------------------*/
-/* BuildFlow(pBlock *pb) - examine the code in a pBlock and build */
-/* the flow blocks. */
/*
- * BuildFlow inserts pCodeFlow objects into the pCode chain at each
- * point the instruction flow changes.
+ * isValidIdChar - check if c may be present in an identifier
*/
-/*-----------------------------------------------------------------*/
-void BuildFlow(pBlock *pb)
+static int isValidIdChar (char c)
{
- pCode *pc;
- pCode *last_pci=NULL;
- pCode *pflow;
- int seq = 0;
-
- if(!pb)
- return;
-
- //fprintf (stderr,"build flow start seq %d ",GpcFlowSeq);
- /* Insert a pCodeFlow object at the beginning of a pBlock */
-
- pflow = newpCodeFlow(); /* Create a new Flow object */
- pflow->next = pb->pcHead; /* Make the current head the next object */
- pb->pcHead->prev = pflow; /* let the current head point back to the flow object */
- pb->pcHead = pflow; /* Make the Flow object the head */
- pflow->pb = pb;
-
- for( pc = findNextInstruction(pb->pcHead);
- pc != NULL;
- pc=findNextInstruction(pc)) {
-
- pc->seq = seq++;
- PCI(pc)->pcflow = PCFL(pflow);
-
- //fprintf(stderr," build: ");
- //pflow->print(stderr,pflow);
-
- if( PCI(pc)->isSkip) {
-
- /* The two instructions immediately following this one
- * mark the beginning of a new flow segment */
-
- while(pc && PCI(pc)->isSkip) {
-
- PCI(pc)->pcflow = PCFL(pflow);
- pc->seq = seq-1;
- seq = 1;
+ if (c >= 'a' && c <= 'z') return 1;
+ if (c >= 'A' && c <= 'Z') return 1;
+ if (c >= '0' && c <= '9') return 1;
+ if (c == '_') return 1;
+ return 0;
+}
- InsertpFlow(pc, &pflow);
- pc=findNextInstruction(pc->next);
- }
+/*
+ * bankcompare - check if two operand string refer to the same register
+ * This functions handles NAME and (NAME + x) in both operands.
+ * Returns 1 on same register, 0 on different (or unknown) registers.
+ */
+static int bankCompare(const char *op1, const char *op2)
+{
+ int i;
- seq = 0;
+ if (!op1 && !op2) return 0; // both unknown, might be different though!
+ if (!op1 || !op2) return 0;
- if(!pc)
- break;
+ // find start of operand name
+ while (op1[0] == '(' || op1[0] == ' ') op1++;
+ while (op2[0] == '(' || op2[0] == ' ') op2++;
- PCI(pc)->pcflow = PCFL(pflow);
- pc->seq = 0;
- InsertpFlow(pc, &pflow);
+ // compare till first non-identifier character
+ for (i = 0; (op1[i] == op2[i]) && isValidIdChar(op1[i]); i++);
+ if (!isValidIdChar(op1[i]) && !isValidIdChar(op2[i])) return 1;
- } else if ( PCI(pc)->isBranch && !checkLabel(findNextInstruction(pc->next))) {
+ // play safe---assume different operands
+ return 0;
+}
- InsertpFlow(pc, &pflow);
- seq = 0;
+/*
+ * Interface to BANKSEL generation.
+ * This function should return != 0 iff str1 and str2 denote operands that
+ * are known to be allocated into the same bank. Consequently, there will
+ * be no BANKSEL emitted if str2 is accessed while str1 has been used to
+ * select the current bank just previously.
+ *
+ * If in doubt, return 0.
+ */
+static int
+pic14_operandsAllocatedInSameBank(const char *str1, const char *str2) {
+ // see glue.c(pic14printLocals)
+
+ if (getenv("SDCC_PIC14_SPLIT_LOCALS")) {
+ // no clustering applied, each register resides in its own bank
+ } else {
+ // check whether BOTH names are local registers
+ // XXX: This is some kind of shortcut, should be safe...
+ // In this model, all r0xXXXX are allocated into a single section
+ // per file, so no BANKSEL required if accessing a r0xXXXX after a
+ // (different) r0xXXXX. Works great for multi-byte operands.
+ if (str1 && str2 && str1[0] == 'r' && str2[0] == 'r') return (1);
+ } // if
+
+ // assume operands in different banks
+ return (0);
+}
- } else if (checkLabel(pc)) { //(PCI_HAS_LABEL(pc)) {
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static int sameBank(regs *reg, regs *previous_reg, const char *new_bank, const char *cur_bank, unsigned max_mask)
+{
+ if (!cur_bank) return 0;
- /* This instruction marks the beginning of a
- * new flow segment */
+ if (previous_reg && reg && previous_reg->isFixed && reg->isFixed && ((previous_reg->address & max_mask) == (reg->address & max_mask))) // only if exists
+ return 1; // if we have address info, we use it for banksel optimization
- pc->seq = 0;
- seq = 1;
- InsertpFlow(findPrevInstruction(pc->prev), &pflow);
+ // regard '(regname + X)' and '(regname + Y)' as equal
+ if (reg && reg->name && bankCompare(reg->name, cur_bank)) return 1;
+ if (new_bank && bankCompare(new_bank, cur_bank)) return 1;
- PCI(pc)->pcflow = PCFL(pflow);
-
- }
- last_pci = pc;
- pc = pc->next;
- }
+ // check allocation policy from glue.c
+ if (reg && reg->name && pic14_operandsAllocatedInSameBank(reg->name, cur_bank)) return 1;
+ if (new_bank && pic14_operandsAllocatedInSameBank(new_bank, cur_bank)) return 1;
- //fprintf (stderr,",end seq %d",GpcFlowSeq);
- PCFL(pflow)->end = pb->pcTail;
+ // seems to be a different operand--might be a different bank
+ //printf ("BANKSEL from %s to %s/%s\n", cur_bank, reg->name, new_bank);
+ return 0;
}
-
-/*-------------------------------------------------------------------*/
-/* unBuildFlow(pBlock *pb) - examine the code in a pBlock and build */
-/* the flow blocks. */
-/*
- * unBuildFlow removes pCodeFlow objects from a pCode chain
- */
+
/*-----------------------------------------------------------------*/
-void unBuildFlow(pBlock *pb)
+/*-----------------------------------------------------------------*/
+static void FixRegisterBanking(pBlock *pb)
{
- pCode *pc;
+ pCode *pc;
+ pCodeInstruction *pci;
+ regs *reg;
+ regs *previous_reg; // contains the previous variable access info
+ const char *cur_bank, *new_bank;
+ unsigned cur_mask, new_mask, max_mask;
+ int allRAMmshared;
+
+ if (!pb) return;
- if(!pb)
- return;
+ max_mask = pic14_getPIC()->bankMask;
+ cur_mask = max_mask;
+ cur_bank = NULL;
+ previous_reg = NULL;
- pc = pb->pcHead;
- while(pc) {
- pCode *pcn = pc->next;
-
- if(isPCI(pc)) {
- pc->seq = 0;
- PCI(pc)->pcflow = NULL;
- pc = pcn;
- } else if(isPCFL(pc)) {
- unlinkpCode(pc);
- pc->destruct(pc);
- } else
- pc = pcn;
+ allRAMmshared = pic14_allRAMShared();
- }
+ for (pc = pb->pcHead; pc; pc = pc->next)
+ {
+ // this one has a label---might check bank at all jumps here...
+ if (isPCI(pc) && (PCI(pc)->label || PCI(pc)->op == POC_CALL)) {
+ addpCodeComment(pc->prev, "BANKOPT3 drop assumptions: PCI with label or call found");
+ previous_reg = NULL;
+ cur_bank = NULL; // start new flow
+ cur_mask = max_mask;
+ }
+
+ // this one is/might be a label or BANKSEL---assume nothing
+ if (isPCL(pc) || isPCASMDIR(pc)) {
+ addpCodeComment(pc->prev, "BANKOPT4 drop assumptions: label or ASMDIR found");
+ previous_reg = NULL;
+ cur_bank = NULL;
+ cur_mask = max_mask;
+ }
+ // this one modifies STATUS
+ // XXX: this should be checked, but usually BANKSELs are not done this way in generated code
+
+ if (isPCI(pc)) {
+ pci = PCI(pc);
+ if ((pci->inCond | pci->outCond) & PCC_REGISTER) {
+ // might need a BANKSEL
+ reg = getRegFromInstruction(pc);
+
+ if (reg) {
+ new_bank = reg->name;
+ // reg->alias == 0: reg is in only one bank, we do not know which (may be any bank)
+ // reg->alias != 0: reg is in 2/4/8/2**N banks, we select one of them
+ new_mask = reg->alias;
+ } else if (pci->pcop && pci->pcop->name) {
+ new_bank = pci->pcop->name;
+ new_mask = 0; // unknown, assume worst case
+ } else {
+ assert(!"Could not get register from instruction.");
+ new_bank = "UNKNOWN";
+ new_mask = 0; // unknown, assume worst case
+ }
+
+ // optimizations...
+ // XXX: add switch to disable these
+ if (1) {
+ // reg present in all banks possibly selected?
+ if (new_mask == max_mask || (cur_mask && ((new_mask & cur_mask) == cur_mask))) {
+ // no BANKSEL required
+ addpCodeComment(pc->prev, "BANKOPT1 BANKSEL dropped; %s present in all of %s's banks", new_bank, cur_bank);
+ continue;
+ }
+
+ // only one bank of memory and no SFR accessed?
+ // XXX: We can do better with fixed registers.
+ if (allRAMmshared && reg && (reg->type != REG_SFR) && (!reg->isFixed)) {
+ // no BANKSEL required
+ addpCodeComment(pc->prev, "BANKOPT1b BANKSEL dropped; %s present in all (of %s's) banks", new_bank, cur_bank);
+ continue;
+ }
+
+ if (sameBank(reg, previous_reg, new_bank, cur_bank, max_mask)) {
+ // no BANKSEL required
+ addpCodeComment(pc->prev, "BANKOPT2 BANKSEL dropped; %s present in same bank as %s", new_bank, cur_bank);
+ continue;
+ }
+ } // if
+
+ if (insertBankSel(pci, new_bank)) {
+ cur_mask = new_mask;
+ cur_bank = new_bank;
+ previous_reg = reg;
+ } // if
+ } // if
+ } // if
+ } // for
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-void dumpCond(int cond)
+static int OptimizepBlock(pBlock *pb)
{
-
- static char *pcc_str[] = {
- //"PCC_NONE",
- "PCC_REGISTER",
- "PCC_C",
- "PCC_Z",
- "PCC_DC",
- "PCC_W",
- "PCC_EXAMINE_PCOP",
- "PCC_REG_BANK0",
- "PCC_REG_BANK1",
- "PCC_REG_BANK2",
- "PCC_REG_BANK3"
- };
-
- int ncond = sizeof(pcc_str) / sizeof(char *);
- int i,j;
-
- fprintf(stderr, "0x%04X\n",cond);
-
- for(i=0,j=1; i<ncond; i++, j<<=1)
- if(cond & j)
- fprintf(stderr, " %s\n",pcc_str[i]);
-
+ pCode *pc, *pcprev;
+ int matches =0;
+
+ if(!pb || options.nopeep)
+ return 0;
+
+ DFPRINTF((stderr," Optimizing pBlock: %c\n",getpBlock_dbName(pb)));
+ /*
+ for(pc = pb->pcHead; pc; pc = pc->next)
+ matches += pCodePeepMatchRule(pc);
+ */
+
+ pc = findNextInstruction(pb->pcHead);
+ if(!pc)
+ return 0;
+
+ pcprev = pc->prev;
+ do {
+
+
+ if(pCodePeepMatchRule(pc)) {
+
+ matches++;
+
+ if(pcprev)
+ pc = findNextInstruction(pcprev->next);
+ else
+ pc = findNextInstruction(pb->pcHead);
+ } else
+ pc = findNextInstruction(pc->next);
+ } while(pc);
+
+ if(matches)
+ DFPRINTF((stderr," Optimizing pBlock: %c - matches=%d\n",getpBlock_dbName(pb),matches));
+ return matches;
+
}
/*-----------------------------------------------------------------*/
+/* pBlockRemoveUnusedLabels - remove the pCode labels from the */
/*-----------------------------------------------------------------*/
-void FlowStats(pCodeFlow *pcflow)
+static pCode * findInstructionUsingLabel(pCodeLabel *pcl, pCode *pcs)
{
-
pCode *pc;
- if(!isPCFL(pcflow))
- return;
-
- fprintf(stderr, " FlowStats - flow block (seq=%d)\n", pcflow->pc.seq);
-
- pc = findNextpCode(PCODE(pcflow), PC_OPCODE);
+ for(pc = pcs; pc; pc = pc->next) {
- if(!pc) {
- fprintf(stderr, " FlowStats - empty flow (seq=%d)\n", pcflow->pc.seq);
- return;
+ if(((pc->type == PC_OPCODE) || (pc->type == PC_INLINE) || (pc->type == PC_ASMDIR)) &&
+ (PCI(pc)->pcop) &&
+ (PCI(pc)->pcop->type == PO_LABEL) &&
+ (PCOLAB(PCI(pc)->pcop)->key == pcl->key))
+ return pc;
}
-
- fprintf(stderr, " FlowStats inCond: ");
- dumpCond(pcflow->inCond);
- fprintf(stderr, " FlowStats outCond: ");
- dumpCond(pcflow->outCond);
-
+ return NULL;
}
-/*-----------------------------------------------------------------*
- * int isBankInstruction(pCode *pc) - examine the pCode *pc to determine
- * if it affects the banking bits.
- *
- * return: -1 == Banking bits are unaffected by this pCode.
- *
- * return: > 0 == Banking bits are affected.
- *
- * If the banking bits are affected, then the returned value describes
- * which bits are affected and how they're affected. The lower half
- * of the integer maps to the bits that are affected, the upper half
- * to whether they're set or cleared.
- *
- *-----------------------------------------------------------------*/
-#define SET_BANK_BIT (1 << 16)
-#define CLR_BANK_BIT 0
-
-int isBankInstruction(pCode *pc)
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void exchangeLabels(pCodeLabel *pcl, pCode *pc)
{
- regs *reg;
- int bank = -1;
-
- if(!isPCI(pc))
- return -1;
-
- if( ( (reg = getRegFromInstruction(pc)) != NULL) && isSTATUS_REG(reg)) {
-
- /* Check to see if the register banks are changing */
- if(PCI(pc)->isModReg) {
-
- pCodeOp *pcop = PCI(pc)->pcop;
- switch(PCI(pc)->op) {
-
- case POC_BSF:
- if(PCORB(pcop)->bit == PIC_RP0_BIT) {
- //fprintf(stderr, " isBankInstruction - Set RP0\n");
- return SET_BANK_BIT | PIC_RP0_BIT;
- }
-
- if(PCORB(pcop)->bit == PIC_RP1_BIT) {
- //fprintf(stderr, " isBankInstruction - Set RP1\n");
- return CLR_BANK_BIT | PIC_RP0_BIT;
+
+ char *s=NULL;
+
+ if(isPCI(pc) &&
+ (PCI(pc)->pcop) &&
+ (PCI(pc)->pcop->type == PO_LABEL)) {
+
+ pCodeOpLabel *pcol = PCOLAB(PCI(pc)->pcop);
+
+ //fprintf(stderr,"changing label key from %d to %d\n",pcol->key, pcl->key);
+ if(pcol->pcop.name)
+ free(pcol->pcop.name);
+
+ /* If the key is negative, then we (probably) have a label to
+ * a function and the name is already defined */
+
+ if(pcl->key>0)
+ sprintf(s=buffer,"_%05d_DS_",pcl->key);
+ else
+ s = pcl->label;
+
+ //sprintf(buffer,"_%05d_DS_",pcl->key);
+ if(!s) {
+ fprintf(stderr, "ERROR %s:%d function label is null\n",__FUNCTION__,__LINE__);
+ }
+ pcol->pcop.name = Safe_strdup(s);
+ pcol->key = pcl->key;
+ //pc->print(stderr,pc);
+
}
- break;
+
+
+}
- case POC_BCF:
- if(PCORB(pcop)->bit == PIC_RP0_BIT) {
- //fprintf(stderr, " isBankInstruction - Clr RP0\n");
- return CLR_BANK_BIT | PIC_RP1_BIT;
+/*-----------------------------------------------------------------*/
+/* pBlockRemoveUnusedLabels - remove the pCode labels from the */
+/* pCode chain if they're not used. */
+/*-----------------------------------------------------------------*/
+static void pBlockRemoveUnusedLabels(pBlock *pb)
+{
+ pCode *pc; pCodeLabel *pcl;
+
+ if(!pb || !pb->pcHead)
+ return;
+
+ for(pc = pb->pcHead; (pc=findNextInstruction(pc->next)) != NULL; ) {
+
+ pBranch *pbr = PCI(pc)->label;
+ if(pbr && pbr->next) {
+ pCode *pcd = pb->pcHead;
+
+ //fprintf(stderr, "multiple labels\n");
+ //pc->print(stderr,pc);
+
+ pbr = pbr->next;
+ while(pbr) {
+
+ while ( (pcd = findInstructionUsingLabel(PCL(PCI(pc)->label->pc), pcd)) != NULL) {
+ //fprintf(stderr,"Used by:\n");
+ //pcd->print(stderr,pcd);
+
+ exchangeLabels(PCL(pbr->pc),pcd);
+
+ pcd = pcd->next;
+ }
+ pbr = pbr->next;
+ }
+ }
}
- if(PCORB(pcop)->bit == PIC_RP1_BIT) {
- //fprintf(stderr, " isBankInstruction - Clr RP1\n");
- return CLR_BANK_BIT | PIC_RP1_BIT;
+
+ for(pc = pb->pcHead; pc; pc = pc->next) {
+
+ if(isPCL(pc)) // Label pcode
+ pcl = PCL(pc);
+ else if (isPCI(pc) && PCI(pc)->label) // pcode instruction with a label
+ pcl = PCL(PCI(pc)->label->pc);
+ else continue;
+
+ //fprintf(stderr," found A LABEL !!! key = %d, %s\n", pcl->key,pcl->label);
+
+ /* This pCode is a label, so search the pBlock to see if anyone
+ * refers to it */
+
+ if( (pcl->key>0) && (!findInstructionUsingLabel(pcl, pb->pcHead))) {
+ /* Couldn't find an instruction that refers to this label
+ * So, unlink the pCode label from it's pCode chain
+ * and destroy the label */
+ //fprintf(stderr," removed A LABEL !!! key = %d, %s\n", pcl->key,pcl->label);
+
+ DFPRINTF((stderr," !!! REMOVED A LABEL !!! key = %d, %s\n", pcl->key,pcl->label));
+ if(pc->type == PC_LABEL) {
+ unlinkpCode(pc);
+ pCodeLabelDestruct(pc);
+ } else {
+ unlinkpCodeFromBranch(pc, PCODE(pcl));
+ /*if(pc->label->next == NULL && pc->label->pc == NULL) {
+ free(pc->label);
+ }*/
+ }
+
+ }
}
- break;
- default:
- //fprintf(stderr, " isBankInstruction - Status register is getting Modified by:\n");
- //genericPrint(stderr, pc);
- ;
- }
- }
-
- }
-
- return bank;
+
}
/*-----------------------------------------------------------------*/
+/* pBlockMergeLabels - remove the pCode labels from the pCode */
+/* chain and put them into pBranches that are */
+/* associated with the appropriate pCode */
+/* instructions. */
/*-----------------------------------------------------------------*/
-void FillFlow(pCodeFlow *pcflow)
+void pBlockMergeLabels(pBlock *pb)
{
-
- pCode *pc;
- int cur_bank;
-
- if(!isPCFL(pcflow))
- return;
-
- // fprintf(stderr, " FillFlow - flow block (seq=%d)\n", pcflow->pc.seq);
-
- pc = findNextpCode(PCODE(pcflow), PC_OPCODE);
-
- if(!pc) {
- //fprintf(stderr, " FillFlow - empty flow (seq=%d)\n", pcflow->pc.seq);
- return;
- }
-
- cur_bank = -1;
-
- do {
- isBankInstruction(pc);
- pc = pc->next;
- } while (pc && (pc != pcflow->end) && !isPCFL(pc));
-
-/*
- if(!pc ) {
- fprintf(stderr, " FillFlow - Bad end of flow\n");
- } else {
- fprintf(stderr, " FillFlow - Ending flow with\n ");
- pc->print(stderr,pc);
- }
-
- fprintf(stderr, " FillFlow inCond: ");
- dumpCond(pcflow->inCond);
- fprintf(stderr, " FillFlow outCond: ");
- dumpCond(pcflow->outCond);
-*/
+ pBranch *pbr;
+ pCode *pc, *pcnext=NULL;
+
+ if(!pb)
+ return;
+
+ /* First, Try to remove any unused labels */
+ //pBlockRemoveUnusedLabels(pb);
+
+ /* Now loop through the pBlock and merge the labels with the opcodes */
+
+ pc = pb->pcHead;
+
+ while(pc) {
+ pCode *pcn = pc->next;
+
+ if(pc->type == PC_LABEL) {
+
+ //fprintf(stderr," checking merging label %s\n",PCL(pc)->label);
+ //fprintf(stderr,"Checking label key = %d\n",PCL(pc)->key);
+ if((pcnext = findNextInstruction(pc) )) {
+
+ // Unlink the pCode label from it's pCode chain
+ unlinkpCode(pc);
+
+ //fprintf(stderr,"Merged label key = %d\n",PCL(pc)->key);
+ // And link it into the instruction's pBranch labels. (Note, since
+ // it's possible to have multiple labels associated with one instruction
+ // we must provide a means to accomodate the additional labels. Thus
+ // the labels are placed into the singly-linked list "label" as
+ // opposed to being a single member of the pCodeInstruction.)
+
+ //_ALLOC(pbr,sizeof(pBranch));
+ pbr = Safe_calloc(1,sizeof(pBranch));
+ pbr->pc = pc;
+ pbr->next = NULL;
+
+ PCI(pcnext)->label = pBranchAppend(PCI(pcnext)->label,pbr);
+
+ } else {
+ fprintf(stderr, "WARNING: couldn't associate label %s with an instruction\n",PCL(pc)->label);
+ }
+ } else if(pc->type == PC_CSOURCE) {
+
+ /* merge the source line symbolic info into the next instruction */
+ if((pcnext = findNextInstruction(pc) )) {
+
+ // Unlink the pCode label from it's pCode chain
+ unlinkpCode(pc);
+ PCI(pcnext)->cline = PCCS(pc);
+ //fprintf(stderr, "merging CSRC\n");
+ //genericPrint(stderr,pcnext);
+ }
+
+ }
+ pc = pcn;
+ }
+ pBlockRemoveUnusedLabels(pb);
+
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-void LinkFlow_pCode(pCodeInstruction *from, pCodeInstruction *to)
+static int OptimizepCode(char dbName)
{
- pCodeFlowLink *fromLink, *toLink;
-
- if(!from || !to || !to->pcflow || !from->pcflow)
- return;
+#define MAX_PASSES 4
+
+ int matches = 0;
+ int passes = 0;
+ pBlock *pb;
+
+ if(!the_pFile)
+ return 0;
+
+ DFPRINTF((stderr," Optimizing pCode\n"));
+
+ do {
+ matches = 0;
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ if('*' == dbName || getpBlock_dbName(pb) == dbName)
+ matches += OptimizepBlock(pb);
+ }
+ }
+ while(matches && ++passes < MAX_PASSES);
+
+ return matches;
+}
- fromLink = newpCodeFlowLink(from->pcflow);
- toLink = newpCodeFlowLink(to->pcflow);
+/*-----------------------------------------------------------------*/
+/* popCopyGPR2Bit - copy a pcode operator */
+/*-----------------------------------------------------------------*/
- addSetIfnotP(&(from->pcflow->to), toLink); //to->pcflow);
- addSetIfnotP(&(to->pcflow->from), fromLink); //from->pcflow);
+pCodeOp *popCopyGPR2Bit(pCodeOp *pc, int bitval)
+{
+ pCodeOp *pcop;
+
+ pcop = newpCodeOpBit(pc->name, bitval, 0);
+
+ if( !( (pcop->type == PO_LABEL) ||
+ (pcop->type == PO_LITERAL) ||
+ (pcop->type == PO_STR) ))
+ PCOR(pcop)->r = PCOR(pc)->r; /* This is dangerous... */
+
+ return pcop;
+}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void pBlockDestruct(pBlock *pb)
+{
+
+ if(!pb)
+ return;
+
+
+ free(pb);
+
}
/*-----------------------------------------------------------------*/
+/* void mergepBlocks(char dbName) - Search for all pBlocks with the*/
+/* name dbName and combine them */
+/* into one block */
/*-----------------------------------------------------------------*/
-void LinkFlow(pBlock *pb)
+static void mergepBlocks(char dbName)
{
- pCode *pc=NULL;
- pCode *pcflow;
- pCode *pct;
+
+ pBlock *pb, *pbmerged = NULL,*pbn;
+
+ pb = the_pFile->pbHead;
+
+ //fprintf(stderr," merging blocks named %c\n",dbName);
+ while(pb) {
+
+ pbn = pb->next;
+ //fprintf(stderr,"looking at %c\n",getpBlock_dbName(pb));
+ if( getpBlock_dbName(pb) == dbName) {
+
+ //fprintf(stderr," merged block %c\n",dbName);
+
+ if(!pbmerged) {
+ pbmerged = pb;
+ } else {
+ addpCode2pBlock(pbmerged, pb->pcHead);
+ /* addpCode2pBlock doesn't handle the tail: */
+ pbmerged->pcTail = pb->pcTail;
+
+ pb->prev->next = pbn;
+ if(pbn)
+ pbn->prev = pb->prev;
+
+
+ pBlockDestruct(pb);
+ }
+ //printpBlock(stderr, pbmerged);
+ }
+ pb = pbn;
+ }
+
+}
+
+/*-----------------------------------------------------------------*/
+/* AnalyzeFlow - Examine the flow of the code and optimize */
+/* */
+/* level 0 == minimal optimization */
+/* optimize registers that are used only by two instructions */
+/* level 1 == maximal optimization */
+/* optimize by looking at pairs of instructions that use the */
+/* register. */
+/*-----------------------------------------------------------------*/
- //fprintf(stderr,"linkflow \n");
+static void AnalyzeFlow(int level)
+{
+ static int times_called=0;
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow != NULL;
- pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
+ pBlock *pb;
- if(!isPCFL(pcflow))
- fprintf(stderr, "LinkFlow - pcflow is not a flow object ");
+ if(!the_pFile)
+ return;
- //fprintf(stderr," link: ");
- //pcflow->print(stderr,pcflow);
- //FillFlow(PCFL(pcflow));
+ /* if this is not the first time this function has been called,
+ then clean up old flow information */
+ if(times_called++) {
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ unBuildFlow(pb);
- pc = PCFL(pcflow)->end;
+ RegsUnMapLiveRanges();
- //fprintf(stderr, "LinkFlow - flow block (seq=%d) ", pcflow->seq);
- if(isPCI_SKIP(pc)) {
- //fprintf(stderr, "ends with skip\n");
- //pc->print(stderr,pc);
- pct=findNextInstruction(pc->next);
- LinkFlow_pCode(PCI(pc),PCI(pct));
- pct=findNextInstruction(pct->next);
- LinkFlow_pCode(PCI(pc),PCI(pct));
- continue;
}
- if(isPCI_BRANCH(pc)) {
- pCodeOpLabel *pcol = PCOLAB(PCI(pc)->pcop);
+ GpcFlowSeq = 1;
- //fprintf(stderr, "ends with branch\n ");
- //pc->print(stderr,pc);
+ /* Phase 2 - Flow Analysis - Register Banking
+ *
+ * In this phase, the individual flow blocks are examined
+ * and register banking is fixed.
+ */
- if(!(pcol && isPCOLAB(pcol))) {
- if((PCI(pc)->op != POC_RETURN) && (PCI(pc)->op != POC_CALL)) {
- pc->print(stderr,pc);
- fprintf(stderr, "ERROR: %s, branch instruction doesn't have label\n",__FUNCTION__);
- }
- continue;
- }
+ //for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ //FixRegisterBanking(pb);
- if( (pct = findLabelinpBlock(pb,pcol)) != NULL)
- LinkFlow_pCode(PCI(pc),PCI(pct));
- else
- fprintf(stderr, "ERROR: %s, couldn't find label\n",__FUNCTION__);
+ /* Phase 2 - Flow Analysis
+ *
+ * In this phase, the pCode is partition into pCodeFlow
+ * blocks. The flow blocks mark the points where a continuous
+ * stream of instructions changes flow (e.g. because of
+ * a call or goto or whatever).
+ */
- continue;
- }
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ BuildFlow(pb);
- if(isPCI(pc)) {
- //fprintf(stderr, "ends with non-branching instruction:\n");
- //pc->print(stderr,pc);
- LinkFlow_pCode(PCI(pc),PCI(findNextInstruction(pc->next)));
+ /* Phase 2 - Flow Analysis - linking flow blocks
+ *
+ * In this phase, the individual flow blocks are examined
+ * to determine their order of excution.
+ */
- continue;
- }
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ LinkFlow(pb);
- if(pc) {
- //fprintf(stderr, "ends with unknown\n");
- //pc->print(stderr,pc);
- continue;
- }
+ /* Phase 3 - Flow Analysis - Flow Tree
+ *
+ * In this phase, the individual flow blocks are examined
+ * to determine their order of excution.
+ */
- //fprintf(stderr, "ends with nothing: ERROR\n");
-
- }
-}
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ BuildFlowTree(pb);
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-int isPCinFlow(pCode *pc, pCode *pcflow)
-{
- if(!pc || !pcflow)
- return 0;
+ /* Phase x - Flow Analysis - Used Banks
+ *
+ * In this phase, the individual flow blocks are examined
+ * to determine the Register Banks they use
+ */
- if(!isPCI(pc) || !PCI(pc)->pcflow || !isPCFL(pcflow) )
- return 0;
+// for(pb = the_pFile->pbHead; pb; pb = pb->next)
+// FixBankFlow(pb);
- if( PCI(pc)->pcflow->pc.seq == pcflow->seq)
- return 1;
- return 0;
-}
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ pCodeRegMapLiveRanges(pb);
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void BanksUsedFlow2(pCode *pcflow)
-{
- pCode *pc=NULL;
-
- int bank = -1;
- bool RegUsed = 0;
-
- regs *reg;
-
- if(!isPCFL(pcflow)) {
- fprintf(stderr, "BanksUsed - pcflow is not a flow object ");
- return;
- }
-
- pc = findNextInstruction(pcflow->next);
-
- PCFL(pcflow)->lastBank = -1;
-
- while(isPCinFlow(pc,pcflow)) {
-
- int bank_selected = isBankInstruction(pc);
-
- //if(PCI(pc)->pcflow)
- //fprintf(stderr,"BanksUsedFlow2, looking at seq %d\n",PCI(pc)->pcflow->pc.seq);
-
- if(bank_selected > 0) {
- //fprintf(stderr,"BanksUsed - mucking with bank %d\n",bank_selected);
-
- /* This instruction is modifying banking bits before accessing registers */
- if(!RegUsed)
- PCFL(pcflow)->firstBank = -1;
-
- if(PCFL(pcflow)->lastBank == -1)
- PCFL(pcflow)->lastBank = 0;
-
- bank = (1 << (bank_selected & (PIC_RP0_BIT | PIC_RP1_BIT)));
- if(bank_selected & SET_BANK_BIT)
- PCFL(pcflow)->lastBank |= bank;
-
-
- } else {
- reg = getRegFromInstruction(pc);
-
- if(reg && !isREGinBank(reg, bank)) {
- int allbanks = REGallBanks(reg);
- if(bank == -1)
- PCFL(pcflow)->firstBank = allbanks;
-
- PCFL(pcflow)->lastBank = allbanks;
-
- bank = allbanks;
- }
- RegUsed = 1;
- }
-
- pc = findNextInstruction(pc->next);
- }
-
-// fprintf(stderr,"BanksUsedFlow2 flow seq=%3d, first bank = 0x%03x, Last bank 0x%03x\n",
-// pcflow->seq,PCFL(pcflow)->firstBank,PCFL(pcflow)->lastBank);
-
-
-
-}
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void BanksUsedFlow(pBlock *pb)
-{
- pCode *pcflow;
-
-
- //pb->pcHead->print(stderr, pb->pcHead);
-
- pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- //pcflow->print(stderr,pcflow);
-
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow != NULL;
- pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
-
- BanksUsedFlow2(pcflow);
- }
-
-}
-
-
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void insertBankSwitch(pCode *pc, int Set_Clear, int RP_BankBit)
-{
- pCode *new_pc;
-
- if(!pc)
- return;
-
- if(RP_BankBit < 0)
- new_pc = newpCode(POC_CLRF, popCopyReg(&pc_status));
- else
- new_pc = newpCode((Set_Clear ? POC_BSF : POC_BCF),
- popCopyGPR2Bit(PCOP(&pc_status),RP_BankBit));
-
- pCodeInsertAfter(pc->prev, new_pc);
-
- /* Move the label, if there is one */
-
- if(PCI(pc)->label) {
- PCI(new_pc)->label = PCI(pc)->label;
- PCI(pc)->label = NULL;
- }
-
- /* The new instruction has the same pcflow block */
- PCI(new_pc)->pcflow = PCI(pc)->pcflow;
-
-}
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void FixRegisterBankingInFlow(pCodeFlow *pcfl, int cur_bank)
-{
- pCode *pc=NULL;
- pCode *pcprev=NULL;
- pCode *new_pc;
-
- regs *reg;
-
- if(!pcfl)
- return;
-
- pc = findNextInstruction(pcfl->pc.next);
-
- while(isPCinFlow(pc,PCODE(pcfl))) {
-
-
- reg = getRegFromInstruction(pc);
-#if 0
- if(reg) {
- fprintf(stderr, " %s ",reg->name);
- fprintf(stderr, "addr = 0x%03x, bank = %d\n",reg->address,REG_BANK(reg));
-
- }
-#endif
-
- if(reg && REG_BANK(reg)!=cur_bank) {
- /* Examine the instruction before this one to make sure it is
- * not a skip type instruction */
- pcprev = findPrevpCode(pc->prev, PC_OPCODE);
- if(!pcprev || (pcprev && !isPCI_SKIP(pcprev))) {
- int b = cur_bank ^ REG_BANK(reg);
-
- //fprintf(stderr, "Cool! can switch banks\n");
- cur_bank = REG_BANK(reg);
- switch(b & 3) {
- case 0:
- break;
- case 1:
- insertBankSwitch(pc, cur_bank&1, PIC_RP0_BIT);
- break;
- case 2:
- insertBankSwitch(pc, cur_bank&2, PIC_RP1_BIT);
- insertBankSwitch(pc, cur_bank&2, PIC_RP1_BIT);
- break;
- case 3:
- if(cur_bank & 3) {
- insertBankSwitch(pc, cur_bank&1, PIC_RP0_BIT);
- insertBankSwitch(pc, cur_bank&2, PIC_RP1_BIT);
- } else
- insertBankSwitch(pc, -1, -1);
- break;
- /*
- new_pc = newpCode(((cur_bank&1) ? POC_BSF : POC_BCF),
- popCopyGPR2Bit(PCOP(&pc_status),PIC_RP0_BIT));
- pCodeInsertAfter(pc->prev, new_pc);
- if(PCI(pc)->label) {
- PCI(new_pc)->label = PCI(pc)->label;
- PCI(pc)->label = NULL;
- }
- */
- /*
- new_pc = newpCode(((cur_bank&1) ? POC_BCF : POC_BSF),
- popCopyGPR2Bit(PCOP(&pc_status),PIC_RP0_BIT));
- pCodeInsertAfter(pc, new_pc);
- */
-
- }
-
- } else {
- //fprintf(stderr, "Bummer can't switch banks\n");
- ;
- }
- }
-
- pcprev = pc;
- pc = findNextInstruction(pc->next);
-
- }
-
- if(pcprev && cur_bank) {
- /* Brute force - make sure that we point to bank 0 at the
- * end of each flow block */
- new_pc = newpCode(POC_BCF,
- popCopyGPR2Bit(PCOP(&pc_status),PIC_RP0_BIT));
- pCodeInsertAfter(pcprev, new_pc);
- cur_bank = 0;
- }
-
-}
-
-/*-----------------------------------------------------------------*/
-/*int compareBankFlow - compare the banking requirements between */
-/* flow objects. */
-/*-----------------------------------------------------------------*/
-int compareBankFlow(pCodeFlow *pcflow, pCodeFlowLink *pcflowLink, int toORfrom)
-{
-
- if(!pcflow || !pcflowLink || !pcflowLink->pcflow)
- return 0;
-
- if(!isPCFL(pcflow) || !isPCFL(pcflowLink->pcflow))
- return 0;
-
- if(pcflow->firstBank == -1)
- return 0;
-
-
- if(pcflowLink->pcflow->firstBank == -1) {
- pCodeFlowLink *pctl = setFirstItem( toORfrom ?
- pcflowLink->pcflow->to :
- pcflowLink->pcflow->from);
- return compareBankFlow(pcflow, pctl, toORfrom);
- }
-
- if(toORfrom) {
- if(pcflow->lastBank == pcflowLink->pcflow->firstBank)
- return 0;
-
- pcflowLink->bank_conflict++;
- pcflowLink->pcflow->FromConflicts++;
- pcflow->ToConflicts++;
- } else {
-
- if(pcflow->firstBank == pcflowLink->pcflow->lastBank)
- return 0;
-
- pcflowLink->bank_conflict++;
- pcflowLink->pcflow->ToConflicts++;
- pcflow->FromConflicts++;
-
- }
- /*
- fprintf(stderr,"compare flow found conflict: seq %d from conflicts %d, to conflicts %d\n",
- pcflowLink->pcflow->pc.seq,
- pcflowLink->pcflow->FromConflicts,
- pcflowLink->pcflow->ToConflicts);
- */
- return 1;
-
-}
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void FixBankFlow(pBlock *pb)
-{
- pCode *pc=NULL;
- pCode *pcflow;
- pCodeFlowLink *pcfl;
-
- pCode *pcflow_max_To=NULL;
- pCode *pcflow_max_From=NULL;
- int max_ToConflicts=0;
- int max_FromConflicts=0;
-
- //fprintf(stderr,"Fix Bank flow \n");
- pcflow = findNextpCode(pb->pcHead, PC_FLOW);
-
-
- /*
- First loop through all of the flow objects in this pcode block
- and fix the ones that have banking conflicts between the
- entry and exit.
- */
-
- //fprintf(stderr, "FixBankFlow - Phase 1\n");
-
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow != NULL;
- pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
-
- if(!isPCFL(pcflow)) {
- fprintf(stderr, "FixBankFlow - pcflow is not a flow object ");
- continue;
- }
-
- if(PCFL(pcflow)->firstBank != PCFL(pcflow)->lastBank &&
- PCFL(pcflow)->firstBank >= 0 &&
- PCFL(pcflow)->lastBank >= 0 ) {
-
- int cur_bank = (PCFL(pcflow)->firstBank < PCFL(pcflow)->lastBank) ?
- PCFL(pcflow)->firstBank : PCFL(pcflow)->lastBank;
-
- FixRegisterBankingInFlow(PCFL(pcflow),cur_bank);
- BanksUsedFlow2(pcflow);
-
- }
- }
-
- //fprintf(stderr, "FixBankFlow - Phase 2\n");
-
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow != NULL;
- pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
-
- int nFlows;
- int nConflicts;
-
- if(!isPCFL(pcflow)) {
- fprintf(stderr, "FixBankFlow - pcflow is not a flow object ");
- continue;
- }
-
- PCFL(pcflow)->FromConflicts = 0;
- PCFL(pcflow)->ToConflicts = 0;
-
- nFlows = 0;
- nConflicts = 0;
-
- //fprintf(stderr, " FixBankFlow flow seq %d\n",pcflow->seq);
- pcfl = setFirstItem(PCFL(pcflow)->from);
- while (pcfl) {
-
- pc = PCODE(pcfl->pcflow);
-
- if(!isPCFL(pc)) {
- fprintf(stderr,"oops dumpflow - to is not a pcflow\n");
- pc->print(stderr,pc);
- }
-
- nConflicts += compareBankFlow(PCFL(pcflow), pcfl, 0);
- nFlows++;
-
- pcfl=setNextItem(PCFL(pcflow)->from);
- }
-
- if((nFlows >= 2) && nConflicts && (PCFL(pcflow)->firstBank>0)) {
- //fprintf(stderr, " From conflicts flow seq %d, nflows %d ,nconflicts %d\n",pcflow->seq,nFlows, nConflicts);
-
- FixRegisterBankingInFlow(PCFL(pcflow),0);
- BanksUsedFlow2(pcflow);
-
- continue; /* Don't need to check the flow from here - it's already been fixed */
-
- }
-
- nFlows = 0;
- nConflicts = 0;
-
- pcfl = setFirstItem(PCFL(pcflow)->to);
- while (pcfl) {
-
- pc = PCODE(pcfl->pcflow);
- if(!isPCFL(pc)) {
- fprintf(stderr,"oops dumpflow - to is not a pcflow\n");
- pc->print(stderr,pc);
- }
-
- nConflicts += compareBankFlow(PCFL(pcflow), pcfl, 1);
- nFlows++;
-
- pcfl=setNextItem(PCFL(pcflow)->to);
- }
-
- if((nFlows >= 2) && nConflicts &&(nConflicts != nFlows) && (PCFL(pcflow)->lastBank>0)) {
- //fprintf(stderr, " To conflicts flow seq %d, nflows %d ,nconflicts %d\n",pcflow->seq,nFlows, nConflicts);
-
- FixRegisterBankingInFlow(PCFL(pcflow),0);
- BanksUsedFlow2(pcflow);
- }
- }
-
- /*
- Loop through the flow objects again and find the ones with the
- maximum conflicts
- */
-
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow != NULL;
- pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
-
- if(PCFL(pcflow)->ToConflicts > max_ToConflicts)
- pcflow_max_To = pcflow;
-
- if(PCFL(pcflow)->FromConflicts > max_FromConflicts)
- pcflow_max_From = pcflow;
- }
-/*
- if(pcflow_max_To)
- fprintf(stderr,"compare flow Max To conflicts: seq %d conflicts %d\n",
- PCFL(pcflow_max_To)->pc.seq,
- PCFL(pcflow_max_To)->ToConflicts);
-
- if(pcflow_max_From)
- fprintf(stderr,"compare flow Max From conflicts: seq %d conflicts %d\n",
- PCFL(pcflow_max_From)->pc.seq,
- PCFL(pcflow_max_From)->FromConflicts);
-*/
-}
-
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void DumpFlow(pBlock *pb)
-{
- pCode *pc=NULL;
- pCode *pcflow;
- pCodeFlowLink *pcfl;
-
-
- fprintf(stderr,"Dump flow \n");
- pb->pcHead->print(stderr, pb->pcHead);
-
- pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow->print(stderr,pcflow);
-
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- pcflow != NULL;
- pcflow = findNextpCode(pcflow->next, PC_FLOW) ) {
-
- if(!isPCFL(pcflow)) {
- fprintf(stderr, "DumpFlow - pcflow is not a flow object ");
- continue;
- }
- fprintf(stderr,"dumping: ");
- pcflow->print(stderr,pcflow);
- FlowStats(PCFL(pcflow));
-
- for(pcfl = setFirstItem(PCFL(pcflow)->to); pcfl; pcfl=setNextItem(PCFL(pcflow)->to)) {
-
- pc = PCODE(pcfl->pcflow);
-
- fprintf(stderr, " from seq %d:\n",pc->seq);
- if(!isPCFL(pc)) {
- fprintf(stderr,"oops dumpflow - from is not a pcflow\n");
- pc->print(stderr,pc);
- }
-
- }
-
- for(pcfl = setFirstItem(PCFL(pcflow)->to); pcfl; pcfl=setNextItem(PCFL(pcflow)->to)) {
-
- pc = PCODE(pcfl->pcflow);
-
- fprintf(stderr, " to seq %d:\n",pc->seq);
- if(!isPCFL(pc)) {
- fprintf(stderr,"oops dumpflow - to is not a pcflow\n");
- pc->print(stderr,pc);
- }
-
- }
-
- }
-
-}
-
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-int OptimizepBlock(pBlock *pb)
-{
- pCode *pc, *pcprev;
- int matches =0;
-
- if(!pb || !peepOptimizing)
- return 0;
-
- DFPRINTF((stderr," Optimizing pBlock: %c\n",getpBlock_dbName(pb)));
-/*
- for(pc = pb->pcHead; pc; pc = pc->next)
- matches += pCodePeepMatchRule(pc);
-*/
-
- pc = findNextInstruction(pb->pcHead);
- pcprev = pc->prev;
- do {
-
-
- if(pCodePeepMatchRule(pc)) {
-
- matches++;
-
- if(pcprev)
- pc = findNextInstruction(pcprev->next);
- else
- pc = findNextInstruction(pb->pcHead);
- } else
- pc = findNextInstruction(pc->next);
- } while(pc);
-
- if(matches)
- DFPRINTF((stderr," Optimizing pBlock: %c - matches=%d\n",getpBlock_dbName(pb),matches));
- return matches;
-
-}
-
-/*-----------------------------------------------------------------*/
-/* pBlockRemoveUnusedLabels - remove the pCode labels from the */
-/*-----------------------------------------------------------------*/
-pCode * findInstructionUsingLabel(pCodeLabel *pcl, pCode *pcs)
-{
- pCode *pc;
-
- for(pc = pcs; pc; pc = pc->next) {
-
- if((pc->type == PC_OPCODE) &&
- (PCI(pc)->pcop) &&
- (PCI(pc)->pcop->type == PO_LABEL) &&
- (PCOLAB(PCI(pc)->pcop)->key == pcl->key))
- return pc;
- }
-
-
- return NULL;
-}
-
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void exchangeLabels(pCodeLabel *pcl, pCode *pc)
-{
-
- if(isPCI(pc) &&
- (PCI(pc)->pcop) &&
- (PCI(pc)->pcop->type == PO_LABEL)) {
-
- pCodeOpLabel *pcol = PCOLAB(PCI(pc)->pcop);
-
- //fprintf(stderr,"changing label key from %d to %d\n",pcol->key, pcl->key);
- if(pcol->pcop.name)
- free(pcol->pcop.name);
-
- sprintf(buffer,"_%05d_DS_",pcl->key);
-
- pcol->pcop.name = Safe_strdup(buffer);
- pcol->key = pcl->key;
- //pc->print(stderr,pc);
-
- }
-
-
-}
-
-/*-----------------------------------------------------------------*/
-/* pBlockRemoveUnusedLabels - remove the pCode labels from the */
-/* pCode chain if they're not used. */
-/*-----------------------------------------------------------------*/
-void pBlockRemoveUnusedLabels(pBlock *pb)
-{
- pCode *pc; pCodeLabel *pcl;
-
- if(!pb)
- return;
-
- for(pc = pb->pcHead; (pc=findNextInstruction(pc->next)) != NULL; ) {
-
- pBranch *pbr = PCI(pc)->label;
- if(pbr && pbr->next) {
- pCode *pcd = pb->pcHead;
-
- //fprintf(stderr, "multiple labels\n");
- //pc->print(stderr,pc);
-
- pbr = pbr->next;
- while(pbr) {
-
- while ( (pcd = findInstructionUsingLabel(PCL(PCI(pc)->label->pc), pcd)) != NULL) {
- //fprintf(stderr,"Used by:\n");
- //pcd->print(stderr,pcd);
-
- exchangeLabels(PCL(pbr->pc),pcd);
-
- pcd = pcd->next;
- }
- pbr = pbr->next;
- }
- }
- }
-
- for(pc = pb->pcHead; pc; pc = pc->next) {
-
- if(isPCL(pc)) // pc->type == PC_LABEL)
- pcl = PCL(pc);
- else if (isPCI(pc) && PCI(pc)->label) //((pc->type == PC_OPCODE) && PCI(pc)->label)
- pcl = PCL(PCI(pc)->label->pc);
- else continue;
-
- //fprintf(stderr," found A LABEL !!! key = %d, %s\n", pcl->key,pcl->label);
-
- /* This pCode is a label, so search the pBlock to see if anyone
- * refers to it */
-
- if( (pcl->key>0) && (!findInstructionUsingLabel(pcl, pb->pcHead))) {
- //if( !findInstructionUsingLabel(pcl, pb->pcHead)) {
- /* Couldn't find an instruction that refers to this label
- * So, unlink the pCode label from it's pCode chain
- * and destroy the label */
- //fprintf(stderr," removed A LABEL !!! key = %d, %s\n", pcl->key,pcl->label);
-
- DFPRINTF((stderr," !!! REMOVED A LABEL !!! key = %d, %s\n", pcl->key,pcl->label));
- if(pc->type == PC_LABEL) {
- unlinkpCode(pc);
- pCodeLabelDestruct(pc);
- } else {
- unlinkpCodeFromBranch(pc, PCODE(pcl));
- /*if(pc->label->next == NULL && pc->label->pc == NULL) {
- free(pc->label);
- }*/
- }
-
- }
- }
-
-}
-
-
-/*-----------------------------------------------------------------*/
-/* pBlockMergeLabels - remove the pCode labels from the pCode */
-/* chain and put them into pBranches that are */
-/* associated with the appropriate pCode */
-/* instructions. */
-/*-----------------------------------------------------------------*/
-void pBlockMergeLabels(pBlock *pb)
-{
- pBranch *pbr;
- pCode *pc, *pcnext=NULL;
-
- if(!pb)
- return;
-
- /* First, Try to remove any unused labels */
- //pBlockRemoveUnusedLabels(pb);
-
- /* Now loop through the pBlock and merge the labels with the opcodes */
-
- for(pc = pb->pcHead; pc; pc = pc->next) {
-
- if(pc->type == PC_LABEL) {
-
- //fprintf(stderr," checking merging label %s\n",PCL(pc)->label);
- //fprintf(stderr,"Checking label key = %d\n",PCL(pc)->key);
- if((pcnext = findNextInstruction(pc) )) {
-
- pCode *pcn = pc->next;
-
- // Unlink the pCode label from it's pCode chain
- unlinkpCode(pc);
-
- //fprintf(stderr,"Merged label key = %d\n",PCL(pc)->key);
- // And link it into the instruction's pBranch labels. (Note, since
- // it's possible to have multiple labels associated with one instruction
- // we must provide a means to accomodate the additional labels. Thus
- // the labels are placed into the singly-linked list "label" as
- // opposed to being a single member of the pCodeInstruction.)
-
- //_ALLOC(pbr,sizeof(pBranch));
- pbr = Safe_calloc(1,sizeof(pBranch));
- pbr->pc = pc;
- pbr->next = NULL;
-
-
- PCI(pcnext)->label = pBranchAppend(PCI(pcnext)->label,pbr);
-
- pc = pcn;
-
- } else {
- fprintf(stderr, "WARNING: couldn't associate label %s with an instruction\n",PCL(pc)->label);
- }
- } else if(pc->type == PC_CSOURCE) {
-
- /* merge the source line symbolic info into the next instruction */
- if((pcnext = findNextInstruction(pc) )) {
-
- pCode *pcn = pc->next;
-
- // Unlink the pCode label from it's pCode chain
- unlinkpCode(pc);
- PCI(pcnext)->cline = PCCS(pc);
- //fprintf(stderr, "merging CSRC\n");
- //genericPrint(stderr,pcnext);
- pc = pcn;
- }
-
- }
-
- }
- pBlockRemoveUnusedLabels(pb);
-
-}
-
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-int OptimizepCode(char dbName)
-{
-#define MAX_PASSES 4
-
- int matches = 0;
- int passes = 0;
- pBlock *pb;
-
- if(!the_pFile)
- return 0;
-
- DFPRINTF((stderr," Optimizing pCode\n"));
-
- do {
- matches = 0;
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if('*' == dbName || getpBlock_dbName(pb) == dbName)
- matches += OptimizepBlock(pb);
- }
- }
- while(matches && ++passes < MAX_PASSES);
-
- return matches;
-}
-
-/*-----------------------------------------------------------------*/
-/* popCopyGPR2Bit - copy a pcode operator */
-/*-----------------------------------------------------------------*/
-
-pCodeOp *popCopyGPR2Bit(pCodeOp *pc, int bitval)
-{
- pCodeOp *pcop;
-
- pcop = newpCodeOpBit(pc->name, bitval, 0);
-
- if( !( (pcop->type == PO_LABEL) ||
- (pcop->type == PO_LITERAL) ||
- (pcop->type == PO_STR) ))
- PCOR(pcop)->r = PCOR(pc)->r; /* This is dangerous... */
-
- return pcop;
-}
-
-
-
-#if 0
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-int InstructionRegBank(pCode *pc)
-{
- regs *reg;
-
- if( (reg = getRegFromInstruction(pc)) == NULL)
- return -1;
-
- return REG_BANK(reg);
-
-}
-#endif
-
-/*-----------------------------------------------------------------*/
-/*-----------------------------------------------------------------*/
-void FixRegisterBanking(pBlock *pb)
-{
- pCode *pc=NULL;
- pCode *pcprev=NULL;
- pCode *new_pc;
-
- int cur_bank;
- regs *reg;
- // return;
- if(!pb)
- return;
-
- //pc = findNextpCode(pb->pcHead, PC_FLOW);
- pc = findNextpCode(pb->pcHead, PC_OPCODE);
- if(!pc)
- return;
- /* loop through all of the flow blocks with in one pblock */
-
- //fprintf(stderr,"Register banking\n");
- cur_bank = 0;
- do {
- /* at this point, pc should point to a PC_FLOW object */
-
-
- /* for each flow block, determine the register banking
- requirements */
-
- // do {
- if(isPCI(pc)) {
- //genericPrint(stderr, pc);
-
- reg = getRegFromInstruction(pc);
- #if 0
- if(reg) {
- fprintf(stderr, " %s ",reg->name);
- fprintf(stderr, "addr = 0x%03x, bank = %d\n",reg->address,REG_BANK(reg));
-
- }
- #endif
- if(reg && REG_BANK(reg)!=cur_bank) {
- /* Examine the instruction before this one to make sure it is
- * not a skip type instruction */
- pcprev = findPrevpCode(pc->prev, PC_OPCODE);
- if(!pcprev || (pcprev && !isPCI_SKIP(pcprev))) {
- int b = cur_bank ^ REG_BANK(reg);
-
- //fprintf(stderr, "Cool! can switch banks\n");
- cur_bank = REG_BANK(reg);
- if(b & 1) {
- new_pc = newpCode(((cur_bank&1) ? POC_BSF : POC_BCF),
- popCopyGPR2Bit(PCOP(&pc_status),PIC_RP0_BIT));
- pCodeInsertAfter(pc->prev, new_pc);
- if(PCI(pc)->label) {
- PCI(new_pc)->label = PCI(pc)->label;
- PCI(pc)->label = NULL;
- }
- /*
- new_pc = newpCode(((cur_bank&1) ? POC_BCF : POC_BSF),
- popCopyGPR2Bit(PCOP(&pc_status),PIC_RP0_BIT));
- pCodeInsertAfter(pc, new_pc);
- */
-
- }
-
- } else {
- //fprintf(stderr, "Bummer can't switch banks\n");
- ;
- }
- }
- }
-
- pcprev = pc;
- pc = pc->next;
- // } while(pc && !(isPCFL(pc)));
-
-
- }while (pc);
-
- if(pcprev && cur_bank) {
- /* Brute force - make sure that we point to bank 0 at the
- * end of each flow block */
- new_pc = newpCode(POC_BCF,
- popCopyGPR2Bit(PCOP(&pc_status),PIC_RP0_BIT));
- pCodeInsertAfter(pcprev, new_pc);
- cur_bank = 0;
- }
-
-}
-
-void pBlockDestruct(pBlock *pb)
-{
-
- if(!pb)
- return;
-
-
- free(pb);
-
-}
-
-/*-----------------------------------------------------------------*/
-/* void mergepBlocks(char dbName) - Search for all pBlocks with the*/
-/* name dbName and combine them */
-/* into one block */
-/*-----------------------------------------------------------------*/
-void mergepBlocks(char dbName)
-{
-
- pBlock *pb, *pbmerged = NULL,*pbn;
-
- pb = the_pFile->pbHead;
-
- //fprintf(stderr," merging blocks named %c\n",dbName);
- while(pb) {
-
- pbn = pb->next;
- //fprintf(stderr,"looking at %c\n",getpBlock_dbName(pb));
- if( getpBlock_dbName(pb) == dbName) {
-
- //fprintf(stderr," merged block %c\n",dbName);
-
- if(!pbmerged) {
- pbmerged = pb;
- } else {
- addpCode2pBlock(pbmerged, pb->pcHead);
- /* addpCode2pBlock doesn't handle the tail: */
- pbmerged->pcTail = pb->pcTail;
-
- pb->prev->next = pbn;
- if(pbn)
- pbn->prev = pb->prev;
-
-
- pBlockDestruct(pb);
- }
- //printpBlock(stderr, pbmerged);
- }
- pb = pbn;
- }
-
-}
-
-/*-----------------------------------------------------------------*/
-/* AnalyzeBanking - Called after the memory addresses have been */
-/* assigned to the registers. */
-/* */
-/*-----------------------------------------------------------------*/
-void AnalyzeBanking(void)
-{
-
- pBlock *pb;
-
- if(!the_pFile)
- return;
-
-
- /* Phase 2 - Flow Analysis - Register Banking
- *
- * In this phase, the individual flow blocks are examined
- * and register banking is fixed.
- */
-
- //for(pb = the_pFile->pbHead; pb; pb = pb->next)
- //FixRegisterBanking(pb);
-
- /* Phase 2 - Flow Analysis
- *
- * In this phase, the pCode is partition into pCodeFlow
- * blocks. The flow blocks mark the points where a continuous
- * stream of instructions changes flow (e.g. because of
- * a call or goto or whatever).
- */
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next)
- BuildFlow(pb);
-
-
- /* Phase 2 - Flow Analysis - linking flow blocks
- *
- * In this phase, the individual flow blocks are examined
- * to determine their order of excution.
- */
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next)
- LinkFlow(pb);
-
-
- /* Phase x - Flow Analysis - Used Banks
- *
- * In this phase, the individual flow blocks are examined
- * to determine the Register Banks they use
- */
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next)
- BanksUsedFlow(pb);
-
- /* Phase x - Flow Analysis - Used Banks
- *
- * In this phase, the individual flow blocks are examined
- * to determine the Register Banks they use
- */
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next)
- FixBankFlow(pb);
-
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next)
- pCodeRegMapLiveRanges(pb);
-
- RemoveUnusedRegisters();
-
-/*
- for(pb = the_pFile->pbHead; pb; pb = pb->next)
- DumpFlow(pb);
-*/
- /* debug stuff */
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- pCode *pcflow;
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- (pcflow = findNextpCode(pcflow, PC_FLOW)) != NULL;
- pcflow = pcflow->next) {
-
- FillFlow(PCFL(pcflow));
- }
- }
-/*
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- pCode *pcflow;
- for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
- (pcflow = findNextpCode(pcflow, PC_FLOW)) != NULL;
- pcflow = pcflow->next) {
-
- FlowStats(PCFL(pcflow));
- }
- }
-*/
-}
-
-/*-----------------------------------------------------------------*/
-/* buildCallTree - look at the flow and extract all of the calls */
-/* */
-/*-----------------------------------------------------------------*/
-set *register_usage(pBlock *pb);
-
-void buildCallTree(void )
-{
- pBranch *pbr;
- pBlock *pb;
- pCode *pc;
-
- if(!the_pFile)
- return;
-
-
-
- /* Now build the call tree.
- First we examine all of the pCodes for functions.
- Keep in mind that the function boundaries coincide
- with pBlock boundaries.
-
- The algorithm goes something like this:
- We have two nested loops. The outer loop iterates
- through all of the pBlocks/functions. The inner
- loop iterates through all of the pCodes for
- a given pBlock. When we begin iterating through
- a pBlock, the variable pc_fstart, pCode of the start
- of a function, is cleared. We then search for pCodes
- of type PC_FUNCTION. When one is encountered, we
- initialize pc_fstart to this and at the same time
- associate a new pBranch object that signifies a
- branch entry. If a return is found, then this signifies
- a function exit point. We'll link the pCodes of these
- returns to the matching pc_fstart.
-
- When we're done, a doubly linked list of pBranches
- will exist. The head of this list is stored in
- `the_pFile', which is the meta structure for all
- of the pCode. Look at the printCallTree function
- on how the pBranches are linked together.
-
- */
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- pCode *pc_fstart=NULL;
- for(pc = pb->pcHead; pc; pc = pc->next) {
- if(isPCF(pc)) {
- if (PCF(pc)->fname) {
-
- if(STRCASECMP(PCF(pc)->fname, "_main") == 0) {
- //fprintf(stderr," found main \n");
- pb->cmemmap = NULL; /* FIXME do we need to free ? */
- pb->dbName = 'M';
- }
-
- pbr = Safe_calloc(1,sizeof(pBranch));
- pbr->pc = pc_fstart = pc;
- pbr->next = NULL;
-
- the_pFile->functions = pBranchAppend(the_pFile->functions,pbr);
-
- // Here's a better way of doing the same:
- addSet(&pb->function_entries, pc);
-
- } else {
- // Found an exit point in a function, e.g. return
- // (Note, there may be more than one return per function)
- if(pc_fstart)
- pBranchLink(PCF(pc_fstart), PCF(pc));
-
- addSet(&pb->function_exits, pc);
- }
- } else if(isCALL(pc)) {
- addSet(&pb->function_calls,pc);
- }
- }
- }
-
- /* Re-allocate the registers so that there are no collisions
- * between local variables when one function call another */
-
- // this is weird...
- // pic14_deallocateAllRegs();
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(!pb->visited)
- register_usage(pb);
- }
-
-}
-
-/*-----------------------------------------------------------------*/
-/* AnalyzepCode - parse the pCode that has been generated and form */
-/* all of the logical connections. */
-/* */
-/* Essentially what's done here is that the pCode flow is */
-/* determined. */
-/*-----------------------------------------------------------------*/
-
-void AnalyzepCode(char dbName)
-{
- pBlock *pb;
- int i,changes;
-
- if(!the_pFile)
- return;
-
- mergepBlocks('D');
-
-
- /* Phase 1 - Register allocation and peep hole optimization
- *
- * The first part of the analysis is to determine the registers
- * that are used in the pCode. Once that is done, the peep rules
- * are applied to the code. We continue to loop until no more
- * peep rule optimizations are found (or until we exceed the
- * MAX_PASSES threshold).
- *
- * When done, the required registers will be determined.
- *
- */
- i = 0;
- do {
-
- DFPRINTF((stderr," Analyzing pCode: PASS #%d\n",i+1));
- //fprintf(stderr," Analyzing pCode: PASS #%d\n",i+1);
-
- /* First, merge the labels with the instructions */
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if('*' == dbName || getpBlock_dbName(pb) == dbName) {
-
- DFPRINTF((stderr," analyze and merging block %c\n",dbName));
- //fprintf(stderr," analyze and merging block %c\n",dbName);
- pBlockMergeLabels(pb);
- AnalyzepBlock(pb);
- } else {
- DFPRINTF((stderr," skipping block analysis dbName=%c blockname=%c\n",dbName,getpBlock_dbName));
- }
- }
-
- changes = OptimizepCode(dbName);
-
- } while(changes && (i++ < MAX_PASSES));
-
- buildCallTree();
-}
-
-/*-----------------------------------------------------------------*/
-/* ispCodeFunction - returns true if *pc is the pCode of a */
-/* function */
-/*-----------------------------------------------------------------*/
-bool ispCodeFunction(pCode *pc)
-{
-
- if(pc && pc->type == PC_FUNCTION && PCF(pc)->fname)
- return 1;
-
- return 0;
-}
-
-/*-----------------------------------------------------------------*/
-/* findFunction - Search for a function by name (given the name) */
-/* in the set of all functions that are in a pBlock */
-/* (note - I expect this to change because I'm planning to limit */
-/* pBlock's to just one function declaration */
-/*-----------------------------------------------------------------*/
-pCode *findFunction(char *fname)
-{
- pBlock *pb;
- pCode *pc;
- if(!fname)
- return NULL;
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
-
- pc = setFirstItem(pb->function_entries);
- while(pc) {
-
- if((pc->type == PC_FUNCTION) &&
- (PCF(pc)->fname) &&
- (strcmp(fname, PCF(pc)->fname)==0))
- return pc;
-
- pc = setNextItem(pb->function_entries);
-
- }
-
- }
- return NULL;
-}
-
-void MarkUsedRegisters(set *regset)
-{
-
- regs *r1,*r2;
-
- for(r1=setFirstItem(regset); r1; r1=setNextItem(regset)) {
- r2 = pic14_regWithIdx(r1->rIdx);
- r2->isFree = 0;
- r2->wasUsed = 1;
- }
-}
-
-void pBlockStats(FILE *of, pBlock *pb)
-{
-
- pCode *pc;
- regs *r;
-
- fprintf(of,";***\n; pBlock Stats: dbName = %c\n;***\n",getpBlock_dbName(pb));
-
- // for now just print the first element of each set
- pc = setFirstItem(pb->function_entries);
- if(pc) {
- fprintf(of,";entry: ");
- pc->print(of,pc);
- }
- pc = setFirstItem(pb->function_exits);
- if(pc) {
- fprintf(of,";has an exit\n");
- //pc->print(of,pc);
- }
+ RemoveUnusedRegisters();
- pc = setFirstItem(pb->function_calls);
- if(pc) {
- fprintf(of,";functions called:\n");
+// for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ pCodeRegOptimizeRegUsage(level);
- while(pc) {
- if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
- fprintf(of,"; %s\n",get_op_from_instruction(PCI(pc)));
- }
- pc = setNextItem(pb->function_calls);
- }
- }
-
- r = setFirstItem(pb->tregisters);
- if(r) {
- int n = elementsInSet(pb->tregisters);
+ OptimizepCode('*');
- fprintf(of,";%d compiler assigned register%c:\n",n, ( (n!=1) ? 's' : ' '));
-
- while (r) {
- fprintf(of,"; %s\n",r->name);
- r = setNextItem(pb->tregisters);
- }
- }
+ /*
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ DumpFlow(pb);
+ */
+ /* debug stuff */
+ /*
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ pCode *pcflow;
+ for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
+ (pcflow = findNextpCode(pcflow, PC_FLOW)) != NULL;
+ pcflow = pcflow->next) {
+
+ FillFlow(PCFL(pcflow));
+ }
+ }
+ */
+ /*
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ pCode *pcflow;
+ for( pcflow = findNextpCode(pb->pcHead, PC_FLOW);
+ (pcflow = findNextpCode(pcflow, PC_FLOW)) != NULL;
+ pcflow = pcflow->next) {
+
+ FlowStats(PCFL(pcflow));
+ }
+ }
+ */
}
/*-----------------------------------------------------------------*/
+/* AnalyzeBanking - Called after the memory addresses have been */
+/* assigned to the registers. */
+/* */
/*-----------------------------------------------------------------*/
-#if 0
-static void sequencepCode(void)
-{
- pBlock *pb;
- pCode *pc;
+void AnalyzeBanking(void)
+{
+ pBlock *pb;
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ if(!picIsInitialized()) {
+ werror(E_FILE_OPEN_ERR, "no memory size is known for this processor");
+ exit(1);
+ }
+
+ if (!the_pFile) return;
+
+ /* Phase x - Flow Analysis - Used Banks
+ *
+ * In this phase, the individual flow blocks are examined
+ * to determine the Register Banks they use
+ */
+
+ AnalyzeFlow(0);
+ AnalyzeFlow(1);
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ FixRegisterBanking(pb);
- pb->seq = GpCodeSequenceNumber+1;
+ AnalyzeFlow(0);
+ AnalyzeFlow(1);
+
+}
- for( pc = pb->pcHead; pc; pc = pc->next)
- pc->seq = ++GpCodeSequenceNumber;
- }
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static DEFSETFUNC (resetrIdx)
+{
+ regs *r = (regs *)item;
+ if (!r->isFixed) {
+ r->rIdx = 0;
+ }
+
+ return 0;
+}
+/*-----------------------------------------------------------------*/
+/* InitRegReuse - Initialises variables for code analyzer */
+/*-----------------------------------------------------------------*/
+static void InitReuseReg(void)
+{
+ /* Find end of statically allocated variables for start idx */
+ /* Start from begining of GPR. Note may not be 0x20 on some PICs */
+ /* XXX: Avoid clashes with fixed registers, start late. */
+ unsigned maxIdx = 0x1000;
+ regs *r;
+ for (r = setFirstItem(dynDirectRegs); r; r = setNextItem(dynDirectRegs)) {
+ if (r->type != REG_SFR) {
+ maxIdx += r->size; /* Increment for all statically allocated variables */
+ }
+ }
+ peakIdx = maxIdx;
+ applyToSet(dynAllocRegs,resetrIdx); /* Reset all rIdx to zero. */
}
-#endif
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-set *register_usage(pBlock *pb)
+static unsigned
+register_reassign(pBlock *pb, unsigned startIdx, unsigned level)
{
- pCode *pc,*pcn;
- set *registers=NULL;
- set *registersInCallPath = NULL;
+ pCode *pc;
+ unsigned temp;
+ unsigned idx = startIdx;
/* check recursion */
-
pc = setFirstItem(pb->function_entries);
+ if (!pc)
+ return idx;
- if(!pc)
- return registers;
+ if (pb->visited)
+ {
+ set *regset;
+ /* TODO: Recursion detection missing, should emit a warning as recursive code will fail. */
+
+ // Find the highest rIdx used by this function for return.
+ regset = pb->tregisters;
+ idx = 0;
+ while (regset)
+ {
+ temp = ((regs *)regset->item)->rIdx;
+ if (temp > idx)
+ idx = temp;
+ regset = regset->next;
+ } // while
+ DFPRINTF((stderr,
+ "%*s(%u) function \"%s\" already visited: max idx = %04x\n",
+ 4 * level, "", level,PCF(pc)->fname, idx));
+ return idx + 1;
+ } // if
+ /*
+ * We now traverse the call tree depth first, assigning indices > startIdx
+ * to the registers of all called functions before assigning indices to
+ * the registers of the calling function, starting with one greater than
+ * the max. index used by any child function.
+ * This approach guarantees that, if f calls g, all registers of f have
+ * greater indices than those of g (also holds transitively).
+ *
+ * XXX: If a function f calls a function g in a different module,
+ * we should handle the case that g could call a function h
+ * in f's module.
+ * The consequence of this is that even though f and h might
+ * share registers (they do not call each other locally) when
+ * looking only at f's module, they actually must not do so!
+ *
+ * For a non-static function f, let ES(f) be the set of functions
+ * (including f) that can only be reached via f in the module-local
+ * call graph (ES(f) will hence be a subgraph).
+ * Let further REG(ES(f)) be the set of registers assigned to
+ * functions in ES(f).
+ * Then we should make sure that REG(ES(f)) and REG(ES(g)) are
+ * disjoint for all non-static functions f and g.
+ *
+ * Unfortunately, determining the sets ES(f) is non-trivial,
+ * so we ignore this problem and declare all modules non-reentrant.
+ * This is a bug.
+ */
pb->visited = 1;
- if(pc->type != PC_FUNCTION)
- fprintf(stderr,"%s, first pc is not a function???\n",__FUNCTION__);
-
- pc = setFirstItem(pb->function_calls);
- for( ; pc; pc = setNextItem(pb->function_calls)) {
-
- if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
- char *dest = get_op_from_instruction(PCI(pc));
+ DFPRINTF((stderr,
+ "%*s(%u) reassigning registers for functions called by \"%s\":base idx = %04x\n",
+ 4 * level, "", level, PCF(pc)->fname, startIdx));
- pcn = findFunction(dest);
- if(pcn)
- registersInCallPath = register_usage(pcn->pb);
- } else
- fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
-
- }
-
-#ifdef PCODE_DEBUG
- pBlockStats(stderr,pb); // debug
-#endif
-
- // Mark the registers in this block as used.
-
- MarkUsedRegisters(pb->tregisters);
- if(registersInCallPath) {
- /* registers were used in the functions this pBlock has called */
- /* so now, we need to see if these collide with the ones we are */
- /* using here */
-
- regs *r1,*r2, *newreg;
+ for (pc = setFirstItem(pb->function_calls); pc; pc = setNextItem(pb->function_calls))
+ {
+ if (pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL)
+ {
+ char *dest = get_op_from_instruction(PCI(pc));
+ pCode *pcn = findFunction(dest);
+
+ if (pcn)
+ {
+ /*
+ * Reassign the registers of all called functions and record
+ * the max. index I used by any child function --> I+1 will be
+ * the first index available to this function.
+ * (Problem shown with regression test src/regression/sub2.c)
+ */
+ unsigned childsMaxIdx;
+ childsMaxIdx = register_reassign(pcn->pb,startIdx,level+1);
+ if (childsMaxIdx > idx)
+ idx = childsMaxIdx;
+ } // if
+ } // if
+ } // for
- DFPRINTF((stderr,"comparing registers\n"));
+ pc = setFirstItem(pb->function_entries);
+ DFPRINTF((stderr,
+ "%*s(%u) reassigning registers for function \"%s\":idx = %04x\n",
+ 4 * level, "", level, PCF(pc)->fname, idx));
- r1 = setFirstItem(registersInCallPath);
- while(r1) {
+ if (pb->tregisters)
+ {
+ regs *r;
+ for (r = setFirstItem(pb->tregisters); r; r = setNextItem(pb->tregisters))
+ {
+ if ((r->type == REG_GPR) && (!r->isFixed) && (r->rIdx < (int)idx))
+ {
+ char s[20];
+ set *regset;
+ /*
+ * Make sure, idx is not yet used in this routine ...
+ * XXX: This should no longer be required, as all functions
+ * are reassigned at most once ...
+ */
+ do
+ {
+ regset = pb->tregisters;
+ // do not touch s->curr ==> outer loop!
+ while (regset && ((regs *)regset->item)->rIdx != idx)
+ regset = regset->next;
+ if (regset)
+ idx++;
+ }
+ while (regset);
+ r->rIdx = idx++;
+ if (peakIdx < idx)
+ peakIdx = idx;
+ sprintf(s,"r0x%02X", r->rIdx);
+ DFPRINTF((stderr,
+ "%*s(%u) reassigning register %p \"%s\" to \"%s\"\n",
+ 4 * level, "", level, r, r->name, s));
+ free(r->name);
+ r->name = Safe_strdup(s);
+ } // if
+ } // for
+ } // if
+
+ /* return lowest index available for caller's registers */
+ return idx;
+}
- r2 = setFirstItem(pb->tregisters);
+/*------------------------------------------------------------------*/
+/* ReuseReg were call tree permits */
+/* */
+/* Re-allocate the GPR for optimum reuse for a given pblock */
+/* eg if a function m() calls function f1() and f2(), where f1 */
+/* allocates a local variable vf1 and f2 allocates a local */
+/* variable vf2. Then providing f1 and f2 do not call each other */
+/* they may share the same general purpose registers for vf1 and */
+/* vf2. */
+/* This is done by first setting the the regs rIdx to start after */
+/* all the global variables, then walking through the call tree */
+/* renaming the registers to match their new idx and incrementng */
+/* it as it goes. If a function has already been called it will */
+/* only rename the registers if it has already used up those */
+/* registers ie rIdx of the function's registers is lower than the */
+/* current rIdx. That way the register will not be reused while */
+/* still being used by an eariler function call. */
+/* */
+/* Note for this to work the functions need to be declared static. */
+/* */
+/*------------------------------------------------------------------*/
+void
+ReuseReg(void)
+{
+ pBlock *pb;
- while(r2 && (r1->type != REG_STK)) {
+ if (options.noOverlay || !the_pFile)
+ return;
- if(r2->rIdx == r1->rIdx) {
- newreg = pic14_findFreeReg(REG_GPR);
+ InitReuseReg();
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ {
+ /* Non static functions can be called from other modules,
+ * so their registers must reassign */
+ if (pb->function_entries
+ && (PCF(setFirstItem(pb->function_entries))->isPublic || !pb->visited))
+ {
+ register_reassign(pb,peakIdx,0);
+ } // if
+ } // for
+}
- if(!newreg) {
- DFPRINTF((stderr,"Bummer, no more registers.\n"));
- exit(1);
- }
+/*-----------------------------------------------------------------*/
+/* buildCallTree - look at the flow and extract all of the calls */
+/* */
+/*-----------------------------------------------------------------*/
- DFPRINTF((stderr,"Cool found register collision nIdx=%d moving to %d\n",
- r1->rIdx, newreg->rIdx));
- r2->rIdx = newreg->rIdx;
- //if(r2->name) free(r2->name);
- if(newreg->name)
- r2->name = Safe_strdup(newreg->name);
- else
- r2->name = NULL;
- newreg->isFree = 0;
- newreg->wasUsed = 1;
+static void buildCallTree(void)
+{
+ pBranch *pbr;
+ pBlock *pb;
+ pCode *pc;
+
+ if(!the_pFile)
+ return;
+
+ /* Now build the call tree.
+ First we examine all of the pCodes for functions.
+ Keep in mind that the function boundaries coincide
+ with pBlock boundaries.
+
+ The algorithm goes something like this:
+ We have two nested loops. The outer loop iterates
+ through all of the pBlocks/functions. The inner
+ loop iterates through all of the pCodes for
+ a given pBlock. When we begin iterating through
+ a pBlock, the variable pc_fstart, pCode of the start
+ of a function, is cleared. We then search for pCodes
+ of type PC_FUNCTION. When one is encountered, we
+ initialize pc_fstart to this and at the same time
+ associate a new pBranch object that signifies a
+ branch entry. If a return is found, then this signifies
+ a function exit point. We'll link the pCodes of these
+ returns to the matching pc_fstart.
+
+ When we're done, a doubly linked list of pBranches
+ will exist. The head of this list is stored in
+ `the_pFile', which is the meta structure for all
+ of the pCode. Look at the printCallTree function
+ on how the pBranches are linked together.
+ */
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ pCode *pc_fstart=NULL;
+ for(pc = pb->pcHead; pc; pc = pc->next) {
+ if(isPCF(pc)) {
+ pCodeFunction *pcf = PCF(pc);
+ if (pcf->fname) {
+
+ if(STRCASECMP(pcf->fname, "_main") == 0) {
+ //fprintf(stderr," found main \n");
+ pb->cmemmap = NULL; /* FIXME do we need to free ? */
+ pb->dbName = 'M';
+ }
+
+ pbr = Safe_calloc(1,sizeof(pBranch));
+ pbr->pc = pc_fstart = pc;
+ pbr->next = NULL;
+
+ the_pFile->functions = pBranchAppend(the_pFile->functions,pbr);
+
+ // Here's a better way of doing the same:
+ addSet(&pb->function_entries, pc);
+
+ } else {
+ // Found an exit point in a function, e.g. return
+ // (Note, there may be more than one return per function)
+ if(pc_fstart)
+ pBranchLink(PCF(pc_fstart), pcf);
+
+ addSet(&pb->function_exits, pc);
+ }
+ } else if(isCALL(pc)) {
+ addSet(&pb->function_calls,pc);
+ }
+ }
}
- r2 = setNextItem(pb->tregisters);
- }
-
- r1 = setNextItem(registersInCallPath);
- }
-
- /* Collisions have been resolved. Now free the registers in the call path */
- r1 = setFirstItem(registersInCallPath);
- while(r1) {
- if(r1->type != REG_STK) {
- newreg = pic14_regWithIdx(r1->rIdx);
- newreg->isFree = 1;
- }
- r1 = setNextItem(registersInCallPath);
- }
+}
- }// else
- // MarkUsedRegisters(pb->registers);
+/*-----------------------------------------------------------------*/
+/* AnalyzepCode - parse the pCode that has been generated and form */
+/* all of the logical connections. */
+/* */
+/* Essentially what's done here is that the pCode flow is */
+/* determined. */
+/*-----------------------------------------------------------------*/
- registers = unionSets(pb->tregisters, registersInCallPath, THROW_NONE);
-#ifdef PCODE_DEBUG
- if(registers)
- DFPRINTF((stderr,"returning regs\n"));
- else
- DFPRINTF((stderr,"not returning regs\n"));
+void AnalyzepCode(char dbName)
+{
+ pBlock *pb;
+ int i,changes;
+
+ if(!the_pFile)
+ return;
+
+ mergepBlocks('D');
+
+
+ /* Phase 1 - Register allocation and peep hole optimization
+ *
+ * The first part of the analysis is to determine the registers
+ * that are used in the pCode. Once that is done, the peep rules
+ * are applied to the code. We continue to loop until no more
+ * peep rule optimizations are found (or until we exceed the
+ * MAX_PASSES threshold).
+ *
+ * When done, the required registers will be determined.
+ *
+ */
+ i = 0;
+ do {
+
+ DFPRINTF((stderr," Analyzing pCode: PASS #%d\n",i+1));
+
+ /* First, merge the labels with the instructions */
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ if('*' == dbName || getpBlock_dbName(pb) == dbName) {
+
+ DFPRINTF((stderr," analyze and merging block %c\n",dbName));
+ pBlockMergeLabels(pb);
+ AnalyzepBlock(pb);
+ } else {
+ DFPRINTF((stderr," skipping block analysis dbName=%c blockname=%c\n",dbName,getpBlock_dbName(pb)));
+ }
+ }
+
+ changes = OptimizepCode(dbName);
+
+ } while(changes && (i++ < MAX_PASSES));
+
+ buildCallTree();
+}
- DFPRINTF((stderr,"pBlock after register optim.\n"));
- pBlockStats(stderr,pb); // debug
-#endif
+/*-----------------------------------------------------------------*/
+/* findFunction - Search for a function by name (given the name) */
+/* in the set of all functions that are in a pBlock */
+/* (note - I expect this to change because I'm planning to limit */
+/* pBlock's to just one function declaration */
+/*-----------------------------------------------------------------*/
+static pCode *findFunction(char *fname)
+{
+ pBlock *pb;
+ pCode *pc;
+ if(!fname)
+ return NULL;
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+
+ pc = setFirstItem(pb->function_entries);
+ while(pc) {
+
+ if((pc->type == PC_FUNCTION) &&
+ (PCF(pc)->fname) &&
+ (strcmp(fname, PCF(pc)->fname)==0))
+ return pc;
+
+ pc = setNextItem(pb->function_entries);
+
+ }
+
+ }
+ return NULL;
+}
- return registers;
+static void pBlockStats(FILE *of, pBlock *pb)
+{
+
+ pCode *pc;
+ regs *r;
+
+ fprintf(of,";***\n; pBlock Stats: dbName = %c\n;***\n",getpBlock_dbName(pb));
+
+ // for now just print the first element of each set
+ pc = setFirstItem(pb->function_entries);
+ if(pc) {
+ fprintf(of,";entry: ");
+ pc->print(of,pc);
+ }
+ pc = setFirstItem(pb->function_exits);
+ if(pc) {
+ fprintf(of,";has an exit\n");
+ //pc->print(of,pc);
+ }
+
+ pc = setFirstItem(pb->function_calls);
+ if(pc) {
+ fprintf(of,";functions called:\n");
+
+ while(pc) {
+ if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
+ fprintf(of,"; %s\n",get_op_from_instruction(PCI(pc)));
+ }
+ pc = setNextItem(pb->function_calls);
+ }
+ }
+
+ r = setFirstItem(pb->tregisters);
+ if(r) {
+ int n = elementsInSet(pb->tregisters);
+
+ fprintf(of,";%d compiler assigned register%c:\n",n, ( (n!=1) ? 's' : ' '));
+
+ while (r) {
+ fprintf(of,"; %s\n",r->name);
+ r = setNextItem(pb->tregisters);
+ }
+ }
}
+#if 0
/*-----------------------------------------------------------------*/
/* printCallTree - writes the call tree to a file */
/* */
/*-----------------------------------------------------------------*/
-void pct2(FILE *of,pBlock *pb,int indent)
+static void pct2(FILE *of,pBlock *pb,int indent)
{
- pCode *pc,*pcn;
- int i;
- // set *registersInCallPath = NULL;
-
- if(!of)
- return;
-
- if(indent > 10)
- return; //recursion ?
-
- pc = setFirstItem(pb->function_entries);
-
- if(!pc)
- return;
-
- pb->visited = 0;
-
- for(i=0;i<indent;i++) // Indentation
- fputc(' ',of);
-
- if(pc->type == PC_FUNCTION)
- fprintf(of,"%s\n",PCF(pc)->fname);
- else
- return; // ???
-
-
- pc = setFirstItem(pb->function_calls);
- for( ; pc; pc = setNextItem(pb->function_calls)) {
-
- if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
- char *dest = get_op_from_instruction(PCI(pc));
-
- pcn = findFunction(dest);
- if(pcn)
- pct2(of,pcn->pb,indent+1);
- } else
- fprintf(of,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
+ pCode *pc,*pcn;
+ int i;
+ // set *registersInCallPath = NULL;
+
+ if(!of)
+ return;
+
+ if(indent > 10)
+ return; //recursion ?
+
+ pc = setFirstItem(pb->function_entries);
+
+ if(!pc)
+ return;
+
+ pb->visited = 0;
+
+ for(i=0;i<indent;i++) // Indentation
+ fputc(' ',of);
+
+ if(pc->type == PC_FUNCTION)
+ fprintf(of,"%s\n",PCF(pc)->fname);
+ else
+ return; // ???
+
+
+ pc = setFirstItem(pb->function_calls);
+ for( ; pc; pc = setNextItem(pb->function_calls)) {
+
+ if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
+ char *dest = get_op_from_instruction(PCI(pc));
+
+ pcn = findFunction(dest);
+ if(pcn)
+ pct2(of,pcn->pb,indent+1);
+ } else
+ fprintf(of,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
+
+ }
+
+
+}
+#endif
- }
+#if 0
+/*-----------------------------------------------------------------*/
+/* ispCodeFunction - returns true if *pc is the pCode of a */
+/* function */
+/*-----------------------------------------------------------------*/
+static bool ispCodeFunction(pCode *pc)
+{
+ if(pc && pc->type == PC_FUNCTION && PCF(pc)->fname)
+ return 1;
+ return 0;
}
-
/*-----------------------------------------------------------------*/
/* printCallTree - writes the call tree to a file */
/* */
/*-----------------------------------------------------------------*/
-void printCallTree(FILE *of)
+static void printCallTree(FILE *of)
{
- pBranch *pbr;
- pBlock *pb;
- pCode *pc;
-
- if(!the_pFile)
- return;
-
- if(!of)
- of = stderr;
-
- fprintf(of, "\npBlock statistics\n");
- for(pb = the_pFile->pbHead; pb; pb = pb->next )
- pBlockStats(of,pb);
-
-
-
- fprintf(of,"Call Tree\n");
- pbr = the_pFile->functions;
- while(pbr) {
- if(pbr->pc) {
- pc = pbr->pc;
- if(!ispCodeFunction(pc))
- fprintf(of,"bug in call tree");
-
-
- fprintf(of,"Function: %s\n", PCF(pc)->fname);
-
- while(pc->next && !ispCodeFunction(pc->next)) {
- pc = pc->next;
- if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL)
- fprintf(of,"\t%s\n",get_op_from_instruction(PCI(pc)));
- }
- }
-
- pbr = pbr->next;
- }
-
-
- fprintf(of,"\n**************\n\na better call tree\n");
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(pb->visited)
- pct2(of,pb,0);
- }
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- fprintf(of,"block dbname: %c\n", getpBlock_dbName(pb));
- }
+ pBranch *pbr;
+ pBlock *pb;
+ pCode *pc;
+
+ if(!the_pFile)
+ return;
+
+ if(!of)
+ of = stderr;
+
+ fprintf(of, "\npBlock statistics\n");
+ for(pb = the_pFile->pbHead; pb; pb = pb->next )
+ pBlockStats(of,pb);
+
+
+
+ fprintf(of,"Call Tree\n");
+ pbr = the_pFile->functions;
+ while(pbr) {
+ if(pbr->pc) {
+ pc = pbr->pc;
+ if(!ispCodeFunction(pc))
+ fprintf(of,"bug in call tree");
+
+
+ fprintf(of,"Function: %s\n", PCF(pc)->fname);
+
+ while(pc->next && !ispCodeFunction(pc->next)) {
+ pc = pc->next;
+ if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL)
+ fprintf(of,"\t%s\n",get_op_from_instruction(PCI(pc)));
+ }
+ }
+
+ pbr = pbr->next;
+ }
+
+
+ fprintf(of,"\n**************\n\na better call tree\n");
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ if(pb->visited)
+ pct2(of,pb,0);
+ }
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+ fprintf(of,"block dbname: %c\n", getpBlock_dbName(pb));
+ }
}
-
+#endif
/*-----------------------------------------------------------------*/
/* */
/*-----------------------------------------------------------------*/
-void InlineFunction(pBlock *pb)
+static void InlineFunction(pBlock *pb)
{
- pCode *pc;
- pCode *pc_call;
-
- if(!pb)
- return;
-
- pc = setFirstItem(pb->function_calls);
-
- for( ; pc; pc = setNextItem(pb->function_calls)) {
-
- if(isCALL(pc)) {
- pCode *pcn = findFunction(get_op_from_instruction(PCI(pc)));
- pCode *pct;
- pCode *pce;
-
- pBranch *pbr;
-
- if(pcn && isPCF(pcn) && (PCF(pcn)->ncalled == 1)) {
+ pCode *pc;
+ pCode *pc_call;
- //fprintf(stderr,"Cool can inline:\n");
- //pcn->print(stderr,pcn);
-
- //fprintf(stderr,"recursive call Inline\n");
- InlineFunction(pcn->pb);
- //fprintf(stderr,"return from recursive call Inline\n");
-
- /*
- At this point, *pc points to a CALL mnemonic, and
- *pcn points to the function that is being called.
-
- To in-line this call, we need to remove the CALL
- and RETURN(s), and link the function pCode in with
- the CALLee pCode.
-
- */
-
-
- /* Remove the CALL */
- pc_call = pc;
- pc = pc->prev;
-
- /* remove callee pBlock from the pBlock linked list */
- removepBlock(pcn->pb);
-
- pce = pcn;
- while(pce) {
- pce->pb = pb;
- pce = pce->next;
- }
-
- /* Remove the Function pCode */
- pct = findNextInstruction(pcn->next);
-
- /* Link the function with the callee */
- pc->next = pcn->next;
- pcn->next->prev = pc;
+ if(!pb)
+ return;
- /* Convert the function name into a label */
-
- pbr = Safe_calloc(1,sizeof(pBranch));
- pbr->pc = newpCodeLabel(PCF(pcn)->fname, -1);
- pbr->next = NULL;
- PCI(pct)->label = pBranchAppend(PCI(pct)->label,pbr);
- PCI(pct)->label = pBranchAppend(PCI(pct)->label,PCI(pc_call)->label);
-
- /* turn all of the return's except the last into goto's */
- /* check case for 2 instruction pBlocks */
- pce = findNextInstruction(pcn->next);
- while(pce) {
- pCode *pce_next = findNextInstruction(pce->next);
-
- if(pce_next == NULL) {
- /* found the last return */
- pCode *pc_call_next = findNextInstruction(pc_call->next);
-
- //fprintf(stderr,"found last return\n");
- //pce->print(stderr,pce);
- pce->prev->next = pc_call->next;
- pc_call->next->prev = pce->prev;
- PCI(pc_call_next)->label = pBranchAppend(PCI(pc_call_next)->label,
- PCI(pce)->label);
- }
-
- pce = pce_next;
+ pc = setFirstItem(pb->function_calls);
+
+ for( ; pc; pc = setNextItem(pb->function_calls)) {
+
+ if(isCALL(pc)) {
+ pCode *pcn = findFunction(get_op_from_instruction(PCI(pc)));
+ pCode *pcp = pc->prev;
+ pCode *pct;
+ pCode *pce;
+
+ pBranch *pbr;
+
+ if(pcn && isPCF(pcn) && (PCF(pcn)->ncalled == 1) && !PCF(pcn)->isPublic && (pcp && (isPCI_BITSKIP(pcp)||!isPCI_SKIP(pcp)))) { /* Bit skips can be inverted other skips can not */
+
+ InlineFunction(pcn->pb);
+
+ /*
+ At this point, *pc points to a CALL mnemonic, and
+ *pcn points to the function that is being called.
+
+ To in-line this call, we need to remove the CALL
+ and RETURN(s), and link the function pCode in with
+ the CALLee pCode.
+
+ */
+
+ pc_call = pc;
+
+ /* Check if previous instruction was a bit skip */
+ if (isPCI_BITSKIP(pcp)) {
+ pCodeLabel *pcl;
+ /* Invert skip instruction and add a goto */
+ PCI(pcp)->op = (PCI(pcp)->op == POC_BTFSS) ? POC_BTFSC : POC_BTFSS;
+
+ if(isPCL(pc_call->next)) { // Label pcode
+ pcl = PCL(pc_call->next);
+ } else if (isPCI(pc_call->next) && PCI(pc_call->next)->label) { // pcode instruction with a label
+ pcl = PCL(PCI(pc_call->next)->label->pc);
+ } else {
+ pcl = PCL(newpCodeLabel(NULL, newiTempLabel(NULL)->key+100));
+ PCI(pc_call->next)->label->pc = (struct pCode*)pcl;
+ }
+ pCodeInsertAfter(pcp, newpCode(POC_GOTO, newpCodeOp(pcl->label,PO_STR)));
+ }
+
+ /* remove callee pBlock from the pBlock linked list */
+ removepBlock(pcn->pb);
+
+ pce = pcn;
+ while(pce) {
+ pce->pb = pb;
+ pce = pce->next;
+ }
+
+ /* Remove the Function pCode */
+ pct = findNextInstruction(pcn->next);
+
+ /* Link the function with the callee */
+ if (pcp) pcp->next = pcn->next;
+ pcn->next->prev = pcp;
+
+ /* Convert the function name into a label */
+
+ pbr = Safe_calloc(1,sizeof(pBranch));
+ pbr->pc = newpCodeLabel(PCF(pcn)->fname, -1);
+ pbr->next = NULL;
+ PCI(pct)->label = pBranchAppend(PCI(pct)->label,pbr);
+ PCI(pct)->label = pBranchAppend(PCI(pct)->label,PCI(pc_call)->label);
+
+ /* turn all of the return's except the last into goto's */
+ /* check case for 2 instruction pBlocks */
+ pce = findNextInstruction(pcn->next);
+ while(pce) {
+ pCode *pce_next = findNextInstruction(pce->next);
+
+ if(pce_next == NULL) {
+ /* found the last return */
+ pCode *pc_call_next = findNextInstruction(pc_call->next);
+
+ //fprintf(stderr,"found last return\n");
+ //pce->print(stderr,pce);
+ pce->prev->next = pc_call->next;
+ pc_call->next->prev = pce->prev;
+ PCI(pc_call_next)->label = pBranchAppend(PCI(pc_call_next)->label,
+ PCI(pce)->label);
+ }
+
+ pce = pce_next;
+ }
+
+ }
+ } else
+ fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
+
}
-
-
- }
- } else
- fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
-
- }
-
+
}
/*-----------------------------------------------------------------*/
void InlinepCode(void)
{
-
- pBlock *pb;
- pCode *pc;
-
- if(!the_pFile)
- return;
-
- if(!functionInlining)
- return;
-
- /* Loop through all of the function definitions and count the
- * number of times each one is called */
- //fprintf(stderr,"inlining %d\n",__LINE__);
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
-
- pc = setFirstItem(pb->function_calls);
-
- for( ; pc; pc = setNextItem(pb->function_calls)) {
-
- if(isCALL(pc)) {
- pCode *pcn = findFunction(get_op_from_instruction(PCI(pc)));
- if(pcn && isPCF(pcn)) {
- PCF(pcn)->ncalled++;
+
+ pBlock *pb;
+ pCode *pc;
+
+ if(!the_pFile)
+ return;
+
+ if(!functionInlining)
+ return;
+
+ /* Loop through all of the function definitions and count the
+ * number of times each one is called */
+ //fprintf(stderr,"inlining %d\n",__LINE__);
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next) {
+
+ pc = setFirstItem(pb->function_calls);
+
+ for( ; pc; pc = setNextItem(pb->function_calls)) {
+
+ if(isCALL(pc)) {
+ pCode *pcn = findFunction(get_op_from_instruction(PCI(pc)));
+ if(pcn && isPCF(pcn)) {
+ PCF(pcn)->ncalled++;
+ }
+ } else
+ fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
+
+ }
}
- } else
- fprintf(stderr,"BUG? pCode isn't a POC_CALL %d\n",__LINE__);
-
- }
- }
-
- //fprintf(stderr,"inlining %d\n",__LINE__);
-
- /* Now, Loop through the function definitions again, but this
- * time inline those functions that have only been called once. */
-
- InlineFunction(the_pFile->pbHead);
- //fprintf(stderr,"inlining %d\n",__LINE__);
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next)
- unBuildFlow(pb);
-
+
+ //fprintf(stderr,"inlining %d\n",__LINE__);
+
+ /* Now, Loop through the function definitions again, but this
+ * time inline those functions that have only been called once. */
+
+ InlineFunction(the_pFile->pbHead);
+ //fprintf(stderr,"inlining %d\n",__LINE__);
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ unBuildFlow(pb);
+
}
+
projects / fw / sdcc / blobdiff