#include "pcode.h"
+#include "pcodeflow.h"
#include "ralloc.h"
+#include "device.h"
+
+pCode *findFunction(char *fname);
+
+static void FixRegisterBanking(pBlock *pb,int cur_bank);
#if defined(__BORLANDC__) || defined(_MSC_VER)
#define STRCASECMP stricmp
#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,NULL};
-pCodeOpReg pc_indf = {{PO_INDF, "INDF"}, -1, NULL,NULL};
-pCodeOpReg pc_fsr = {{PO_FSR, "FSR"}, -1, NULL,NULL};
-pCodeOpReg pc_pcl = {{PO_PCL, "PCL"}, -1, NULL,NULL};
-pCodeOpReg pc_pclath = {{PO_PCLATH, "PCLATH"}, -1, NULL,NULL};
+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_pcl = {{PO_PCL, "PCL"}, -1, NULL,0,NULL};
+pCodeOpReg pc_pclath = {{PO_PCLATH, "PCLATH"}, -1, NULL,0,NULL};
-static int mnemonics_initialized = 0;
+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;
static hTab *pic14MnemonicsHash = NULL;
-
+static hTab *pic14pCodePeepCommandsHash = NULL;
static pFile *the_pFile = NULL;
-static int peepOptimizing = 1;
-static int GpCodeSequenceNumber = 1;
+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 */
+int debug_verbose = 0; /* Set true to inundate .asm file */
+
+// static int GpCodeSequenceNumber = 1;
+int GpcFlowSeq = 1;
+
+unsigned maxIdx; /* This keeps track of the maximum register index for call tree register reuse */
+unsigned peakIdx; /* This keeps track of the peak register index for call tree register reuse */
+
+extern void RemoveUnusedRegisters(void);
+extern void RegsUnMapLiveRanges(void);
+extern void BuildFlowTree(pBlock *pb);
+extern void pCodeRegOptimizeRegUsage(int level);
+extern int picIsInitialized(void);
/****************************************************************/
/* Forward declarations */
/****************************************************************/
-static void unlinkPC(pCode *pc);
+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 pCodePrintLabel(FILE *of, pCode *pc);
static void pCodePrintFunction(FILE *of, pCode *pc);
static void pCodeOpPrint(FILE *of, pCodeOp *pcop);
-static char *get_op( pCodeInstruction *pcc);
+static char *get_op_from_instruction( pCodeInstruction *pcc);
+char *get_op( pCodeOp *pcop,char *buff,size_t buf_size);
int pCodePeepMatchLine(pCodePeep *peepBlock, pCode *pcs, pCode *pcd);
int pCodePeepMatchRule(pCode *pc);
+void pBlockStats(FILE *of, pBlock *pb);
+pBlock *newpBlock(void);
+pCodeOp *popCopyGPR2Bit(pCodeOp *pc, int bitval);
+void pCodeRegMapLiveRanges(pBlock *pb);
+/****************************************************************/
+/* PIC Instructions */
+/****************************************************************/
+
pCodeInstruction pciADDWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_W | PCC_REGISTER), // inCond
(PCC_REGISTER | PCC_Z) // outCond
};
pCodeInstruction pciADDFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ // genericAnalyze,
genericDestruct,
genericPrint},
- POC_ADDWF,
+ 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_Z) // outCond
};
pCodeInstruction pciADDLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_W, // inCond
+ 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, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_W, // inCond
+ 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, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_W | PCC_REGISTER), // inCond
(PCC_REGISTER | PCC_Z) // outCond
};
pCodeInstruction pciANDFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ // genericAnalyze,
genericDestruct,
genericPrint},
- POC_ANDWF,
+ 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, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- 0,1, // dest, bit instruction
- PCC_NONE, // inCond
- PCC_EXAMINE_PCOP // outCond
+ 1,1, // dest, bit instruction
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_BSF,
+ (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
+ PCC_REGISTER // outCond
};
pCodeInstruction pciBSF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- 0,1, // dest, bit instruction
- PCC_NONE, // inCond
- PCC_EXAMINE_PCOP // outCond
+ 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, NULL, NULL, NULL,
- AnalyzeSKIP,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_EXAMINE_PCOP, // inCond
- PCC_NONE // outCond
+ 1,1, // branch, skip
+ 0, // literal operand
+ POC_BTFSS,
+ (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
+ PCC_EXAMINE_PCOP // outCond
};
pCodeInstruction pciBTFSS = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- AnalyzeSKIP,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_EXAMINE_PCOP, // inCond
- PCC_NONE // outCond
+ 1,1, // branch, skip
+ 0, // literal operand
+ POC_BTFSC,
+ (PCC_REGISTER | PCC_EXAMINE_PCOP), // inCond
+ PCC_EXAMINE_PCOP // outCond
};
pCodeInstruction pciCALL = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_NONE, // inCond
PCC_NONE // outCond
};
pCodeInstruction pciCOMF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_REGISTER // outCond
};
pCodeInstruction pciCOMFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_W // outCond
};
pCodeInstruction pciCLRF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_REGISTER, // inCond
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
PCC_REGISTER // outCond
};
pCodeInstruction pciCLRW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_W, // inCond
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
PCC_W // outCond
};
+pCodeInstruction pciCLRWDT = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ // genericAnalyze,
+ 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 pciDECF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_REGISTER // outCond
};
pCodeInstruction pciDECFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_W // outCond
};
pCodeInstruction pciDECFSZ = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- AnalyzeSKIP,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_REGISTER // outCond
};
pCodeInstruction pciDECFSZW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- AnalyzeSKIP,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_W // outCond
};
pCodeInstruction pciGOTO = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- AnalyzeGOTO,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_NONE, // inCond
PCC_NONE // outCond
};
-
pCodeInstruction pciINCF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_REGISTER // outCond
};
pCodeInstruction pciINCFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_W // outCond
};
pCodeInstruction pciINCFSZ = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- AnalyzeSKIP,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_REGISTER // outCond
};
pCodeInstruction pciINCFSZW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- AnalyzeSKIP,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_W // outCond
};
pCodeInstruction pciIORWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_W | PCC_REGISTER), // inCond
(PCC_REGISTER | PCC_Z) // outCond
};
pCodeInstruction pciIORFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ // genericAnalyze,
genericDestruct,
genericPrint},
- POC_IORWF,
+ 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 pciIORLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_W, // inCond
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_LITERAL), // inCond
(PCC_W | PCC_Z) // outCond
};
pCodeInstruction pciMOVF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
PCC_Z // outCond
};
pCodeInstruction pciMOVFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_REGISTER, // inCond
(PCC_W | PCC_Z) // outCond
};
pCodeInstruction pciMOVWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_W, // inCond
- 0 // outCond
+ PCC_REGISTER // outCond
};
pCodeInstruction pciMOVLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {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
- PCC_NONE, // inCond
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_NONE | PCC_LITERAL), // inCond
PCC_W // outCond
};
-pCodeInstruction pciNEGF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+pCodeInstruction pciNOP = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
genericDestruct,
genericPrint},
- POC_NEGF,
- "NEGF",
+ POC_NOP,
+ "NOP",
+ NULL, // from branch
+ NULL, // to branch
+ NULL, // label
NULL, // operand
- 1, // num ops
+ NULL, // flow block
+ NULL, // C source
+ 0, // num ops
0,0, // dest, bit instruction
- PCC_REGISTER, // inCond
+ 0,0, // branch, skip
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
PCC_NONE // outCond
};
+pCodeInstruction pciRETFIE = {
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
+ PCC_NONE, // inCond
+ PCC_NONE // outCond (not true... affects the GIE bit too)
+};
pCodeInstruction pciRETLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- AnalyzeRETURN,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_NONE, // inCond
+ 1,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ PCC_LITERAL, // inCond
PCC_W // outCond
};
pCodeInstruction pciRETURN = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- AnalyzeRETURN,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_NONE, // inCond
- PCC_W // outCond
+ PCC_NONE // outCond
};
-
pCodeInstruction pciRLF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_C | PCC_REGISTER), // inCond
(PCC_REGISTER | PCC_Z | PCC_C | PCC_DC) // outCond
};
pCodeInstruction pciRLFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_C | PCC_REGISTER), // inCond
(PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
};
pCodeInstruction pciRRF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_C | PCC_REGISTER), // inCond
(PCC_REGISTER | PCC_Z | PCC_C | PCC_DC) // outCond
};
pCodeInstruction pciRRFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_C | PCC_REGISTER), // inCond
(PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
};
pCodeInstruction pciSUBWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_W | PCC_REGISTER), // inCond
(PCC_REGISTER | PCC_Z) // outCond
};
pCodeInstruction pciSUBFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ // genericAnalyze,
genericDestruct,
genericPrint},
- POC_SUBWF,
+ 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_Z) // outCond
};
pCodeInstruction pciSUBLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_W, // inCond
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_LITERAL), // inCond
(PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
};
pCodeInstruction pciSWAPF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_REGISTER), // inCond
(PCC_REGISTER) // outCond
};
pCodeInstruction pciSWAPFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_REGISTER), // inCond
(PCC_W) // outCond
};
+
pCodeInstruction pciTRIS = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
PCC_NONE, // inCond
- PCC_NONE
+ PCC_REGISTER // outCond
};
-
pCodeInstruction pciXORWF = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
+ 0, // literal operand
+ POC_NOP,
(PCC_W | PCC_REGISTER), // inCond
(PCC_REGISTER | PCC_Z) // outCond
};
pCodeInstruction pciXORFW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ // genericAnalyze,
genericDestruct,
genericPrint},
- POC_XORWF,
+ 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
};
pCodeInstruction pciXORLW = {
- {PC_OPCODE, NULL, NULL, 0, NULL, NULL, NULL, NULL,
- genericAnalyze,
+ {PC_OPCODE, NULL, NULL, 0, 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
- PCC_W, // inCond
+ 0,0, // branch, skip
+ 1, // literal operand
+ POC_NOP,
+ (PCC_W | PCC_LITERAL), // inCond
(PCC_W | PCC_Z | PCC_C | PCC_DC) // outCond
};
-#define MAX_PIC14MNEMONICS 100
+pCodeInstruction pciBANKSEL = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ // genericAnalyze,
+ 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_REGISTER // outCond
+};
+
+pCodeInstruction pciPAGESEL = {
+ {PC_OPCODE, NULL, NULL, 0, 0, NULL,
+ // genericAnalyze,
+ 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_REGISTER // outCond
+};
+
pCodeInstruction *pic14Mnemonics[MAX_PIC14MNEMONICS];
+
+/*-----------------------------------------------------------------*/
+/* return a unique ID number to assist pCodes debuging */
+/*-----------------------------------------------------------------*/
+unsigned PCodeID(void) {
+ static unsigned int pcodeId = 1; // unique ID number to be assigned to all pCodes
+/**/
+ static unsigned int stop;
+ if (pcodeId == 5801)
+ stop++;
+ if ((pcodeId >= 855)&&(pcodeId <= 856))
+ stop++;
+/**/
+ return pcodeId++;
+}
+
+#ifdef HAVE_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 */
return;
va_start(val, format);
-#if 0
- // Alas, vsnprintf is not ANSI standard, and does not exist
- // on Solaris (and probably other non-Gnu flavored Unixes).
+
vsnprintf(*str, *size, format, val);
-#else
- // This, of course, is *not* safe, despite the name.
- vsprintf(*str, format, val);
-#endif
-
+
va_end (val);
len = strlen(*str);
+ if((size_t)len > *size) {
+ fprintf(stderr,"WARNING, it looks like %s has overflowed\n",__FUNCTION__);
+ fprintf(stderr,"len = %d is > str size %d\n",len,(int)*size);
+ }
+
+ *str += len;
+ *size -= len;
+
+}
+
+#else // HAVE_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);
+
+ vsprintf(buffer, format, val);
+ va_end (val);
+
+ 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);
+ }
+
+ strcpy(*str, buffer);
*str += len;
*size -= len;
}
+#endif // HAVE_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)
{
+ static int initialized=0;
+ int shareBankAddress,stkSize;
- pc_fsr.rIdx = 4;
- pc_fsr.r = pic14_regWithIdx(4);
+ if(initialized)
+ return;
+ initialized = 1;
+
+ shareBankAddress = 0x7f; /* FIXME - some PIC ICs like 16C7X which do not have a shared bank need a different approach. */
+ stkSize = 8; // Set pseudo stack size to 8
+ initStack(shareBankAddress, stkSize); // Putting the pseudo stack in shared memory so all modules use the same register when passing fn parameters
+ init_pic(port->processor);
+
+ 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, 0x80);
+ 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;
+
+ pc_wsave.r = allocInternalRegister(IDX_WSAVE,"WSAVE", PO_GPR_REGISTER, 0x180); /* Interrupt storage for working register - must be same address in all banks ie section SHAREBANK. */
+ pc_ssave.r = allocInternalRegister(IDX_SSAVE,"SSAVE", PO_GPR_REGISTER, 0); /* Interrupt storage for status register. */
+ pc_psave.r = allocInternalRegister(IDX_PSAVE,"PSAVE", PO_GPR_REGISTER, 0); /* Interrupt storage for pclath register. */
+
+ 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();
}
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_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_MOVFW] = &pciMOVFW;
pic14Mnemonics[POC_MOVLW] = &pciMOVLW;
pic14Mnemonics[POC_MOVWF] = &pciMOVWF;
- pic14Mnemonics[POC_NEGF] = &pciNEGF;
+ pic14Mnemonics[POC_NOP] = &pciNOP;
+ pic14Mnemonics[POC_RETFIE] = &pciRETFIE;
pic14Mnemonics[POC_RETLW] = &pciRETLW;
pic14Mnemonics[POC_RETURN] = &pciRETURN;
pic14Mnemonics[POC_RLF] = &pciRLF;
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])
pci = hTabFirstItem(pic14MnemonicsHash, &key);
while(pci) {
- fprintf( stderr, "element %d key %d, mnem %s\n",i++,key,pci->mnemonic);
+ 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)
{
while(pci) {
if(STRCASECMP(pci->mnemonic, mnem) == 0) {
- if((pci->num_ops <= 1) || (pci->dest == dest))
+ if((pci->num_ops <= 1) || (pci->isModReg == dest) || (pci->isBitInst))
return(pci->op);
}
return -1;
}
+/*-----------------------------------------------------------------*
+ * 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 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;
+}
+
char getpBlock_dbName(pBlock *pb)
{
if(!pb)
return pb->dbName;
}
+void pBlockConvert2ISR(pBlock *pb)
+{
+ if(!pb)
+ return;
+
+ if(pb->cmemmap)
+ pb->cmemmap = NULL;
+
+ pb->dbName = 'I';
+}
+
/*-----------------------------------------------------------------*/
/* movepBlock2Head - given the dbname of a pBlock, move all */
/* instances to the front of the doubly linked */
return;
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(getpBlock_dbName(pb) == dbName)
+ if(getpBlock_dbName(pb) == dbName) {
+ pBlockStats(of,pb);
printpBlock(of,pb);
+ fprintf (of, "\n");
+ }
}
}
void pcode_test(void)
{
- printf("pcode is alive!\n");
+ DFPRINTF((stderr,"pcode is alive!\n"));
//initMnemonics();
char buffer[100];
/* create the file name */
- strcpy(buffer,srcFileName);
+ strcpy(buffer,dstFileName);
strcat(buffer,".p");
if( !(pFile = fopen(buffer, "w" ))) {
}
}
}
+/*-----------------------------------------------------------------*/
+/* int RegCond(pCodeOp *pcop) - if pcop points to the STATUS reg- */
+/* ister, RegCond will return the bit being referenced. */
+/* */
+/* fixme - why not just OR in the pcop bit field */
+/*-----------------------------------------------------------------*/
+
static int RegCond(pCodeOp *pcop)
{
if(!pcop)
return 0;
- if(pcop->type == PO_BIT && !strcmp(pcop->name, pc_status.pcop.name)) {
- switch(PCOB(pcop)->bit) {
- case PIC_C_BIT:
- return PCC_C;
- case PIC_DC_BIT:
- return PCC_DC;
- case PIC_Z_BIT:
- return PCC_Z;
- }
-
+ 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) { <<< This breaks the peep 2 optimisation
+ 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((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->inCond & PCC_EXAMINE_PCOP)
+ pci->inCond |= RegCond(pcop);
- if(pci->outCond == PCC_EXAMINE_PCOP)
- pci->outCond = RegCond(pcop);
+ if(pci->outCond & PCC_EXAMINE_PCOP)
+ pci->outCond |= RegCond(pcop);
+ pci->pc.prev = pci->pc.next = NULL;
return (pCode *)pci;
}
pcw = Safe_calloc(1,sizeof(pCodeWild));
- pcw->pc.type = PC_WILD;
- pcw->pc.prev = pcw->pc.next = NULL;
- pcw->pc.from = pcw->pc.to = pcw->pc.label = NULL;
- pcw->pc.pb = NULL;
+ 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->pc.analyze = genericAnalyze;
- pcw->pc.destruct = genericDestruct;
- pcw->pc.print = genericPrint;
+ // 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);
+}
+
+ /*-----------------------------------------------------------------*/
+/* newPcodeInlineP - create a new pCode from a char string */
+/*-----------------------------------------------------------------*/
+
+
+pCode *newpCodeInlineP(char *cP)
+{
+
+ pCodeComment *pcc ;
+
+ pcc = Safe_calloc(1,sizeof(pCodeComment));
+
+ pcc->pc.type = PC_INLINE;
+ 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.analyze = genericAnalyze;
+ pcc->pc.destruct = genericDestruct;
+ pcc->pc.print = genericPrint;
+
+ if(cP)
+ pcc->comment = Safe_strdup(cP);
+ else
+ pcc->comment = NULL;
+
+ return ( (pCode *)pcc);
+
}
/*-----------------------------------------------------------------*/
pcc->pc.type = PC_COMMENT;
pcc->pc.prev = pcc->pc.next = NULL;
- pcc->pc.from = pcc->pc.to = pcc->pc.label = NULL;
+ pcc->pc.id = PCodeID();
+ //pcc->pc.from = pcc->pc.to = pcc->pc.label = NULL;
pcc->pc.pb = NULL;
- pcc->pc.analyze = genericAnalyze;
+ // pcc->pc.analyze = genericAnalyze;
pcc->pc.destruct = genericDestruct;
pcc->pc.print = genericPrint;
}
/*-----------------------------------------------------------------*/
-/* newpCodeGLabel - create a new global label */
+/* newpCodeFunction - */
/*-----------------------------------------------------------------*/
-pCode *newpCodeFunction(char *mod,char *f)
+pCode *newpCodeFunction(char *mod,char *f,int isPublic)
{
pCodeFunction *pcf;
- _ALLOC(pcf,sizeof(pCodeFunction));
+ 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.id = PCodeID();
+ //pcf->pc.from = pcf->pc.to = pcf->pc.label = NULL;
pcf->pc.pb = NULL;
- pcf->pc.analyze = genericAnalyze;
+ // pcf->pc.analyze = genericAnalyze;
pcf->pc.destruct = genericDestruct;
pcf->pc.print = pCodePrintFunction;
+ pcf->ncalled = 0;
+
if(mod) {
- _ALLOC_ATOMIC(pcf->modname,strlen(mod)+1);
+ //_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);
+ //_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);
}
-static void pCodeLabelDestruct(pCode *pc)
+/*-----------------------------------------------------------------*/
+/* newpCodeFlow */
+/*-----------------------------------------------------------------*/
+void destructpCodeFlow(pCode *pc)
{
-
- if(!pc)
+ if(!pc || !isPCFL(pc))
return;
- unlinkPC(pc);
-
- if((pc->type == PC_LABEL) && PCL(pc)->label)
- free(PCL(pc)->label);
+/*
+ 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 *newpCodeLabel(int key)
+pCode *newpCodeFlow(void )
{
+ pCodeFlow *pcflow;
- char *s = buffer;
- pCodeLabel *pcl;
-
- pcl = Safe_calloc(1,sizeof(pCodeLabel) );
+ //_ALLOC(pcflow,sizeof(pCodeFlow));
+ pcflow = Safe_calloc(1,sizeof(pCodeFlow));
- 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;
+ pcflow->pc.type = PC_FLOW;
+ pcflow->pc.prev = pcflow->pc.next = NULL;
+ pcflow->pc.pb = NULL;
- pcl->pc.analyze = genericAnalyze;
- pcl->pc.destruct = pCodeLabelDestruct;
- pcl->pc.print = pCodePrintLabel;
+ // pcflow->pc.analyze = genericAnalyze;
+ pcflow->pc.destruct = destructpCodeFlow;
+ pcflow->pc.print = genericPrint;
- pcl->key = key;
+ pcflow->pc.seq = GpcFlowSeq++;
- pcl->label = NULL;
- if(key>0) {
- sprintf(s,"_%05d_DS_",key);
- if(s)
- pcl->label = Safe_strdup(s);
- }
+ pcflow->from = pcflow->to = NULL;
+ pcflow->inCond = PCC_NONE;
+ pcflow->outCond = PCC_NONE;
- return ( (pCode *)pcl);
+ pcflow->firstBank = 'U'; /* Undetermined */
+ pcflow->lastBank = 'U'; /* Undetermined */
-}
-pCode *newpCodeLabelStr(char *str)
-{
- pCode *pc = newpCodeLabel(-1);
+ pcflow->FromConflicts = 0;
+ pcflow->ToConflicts = 0;
- if(str)
- PCL(pc)->label = Safe_strdup(str);
- else
- PCL(pc)->label = NULL;
+ pcflow->end = NULL;
+
+ pcflow->registers = newSet();
+
+ return ( (pCode *)pcflow);
- return pc;
}
/*-----------------------------------------------------------------*/
-/* newpBlock - create and return a pointer to a new pBlock */
/*-----------------------------------------------------------------*/
-pBlock *newpBlock(void)
+pCodeFlowLink *newpCodeFlowLink(pCodeFlow *pcflow)
{
+ pCodeFlowLink *pcflowLink;
- pBlock *PpB;
-
- PpB = Safe_calloc(1,sizeof(pBlock) );
- PpB->next = PpB->prev = NULL;
-
- PpB->function_entries = PpB->function_exits = PpB->function_calls = NULL;
- PpB->registers = NULL;
- PpB->visited = 0;
+ pcflowLink = Safe_calloc(1,sizeof(pCodeFlowLink));
- return PpB;
+ pcflowLink->pcflow = pcflow;
+ pcflowLink->bank_conflict = 0;
+ return pcflowLink;
}
/*-----------------------------------------------------------------*/
-/* newpCodeChai0n - create a new chain of pCodes */
-/*-----------------------------------------------------------------*
- *
- * This function will create a new pBlock and the pointer to the
+/* newpCodeCSource - create a new pCode Source Symbol */
+/*-----------------------------------------------------------------*/
+
+pCode *newpCodeCSource(int ln, char *f, 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);
+
+}
+/*-----------------------------------------------------------------*/
+/* 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);
+
+}
+
+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.id = PCodeID();
+ //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);
+
+ //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)
+{
+
+ 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.
*-----------------------------------------------------------------*/
/* optimizations). */
/*-----------------------------------------------------------------*/
-pCodeOp *newpCodeOpLabel(int key)
+pCodeOp *newpCodeOpLabel(char *name, int key)
{
- char *s = buffer;
+ 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,"_%05d_DS_",key);
- if(s)
- pcop->name = Safe_strdup(s);
- }
+ 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;
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;
}
-pCodeOp *newpCodeOpWild(int id, pCodePeep *pcp, pCodeOp *subtype)
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+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) {
+ 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(!pcp || !subtype) {
+ if(!pcwb || !subtype) {
fprintf(stderr, "Wild opcode declaration error: %s-%d\n",__FILE__,__LINE__);
exit(1);
}
pcop->name = Safe_strdup(s);
PCOW(pcop)->id = id;
- PCOW(pcop)->pcp = pcp;
+ PCOW(pcop)->pcwb = pcwb;
PCOW(pcop)->subtype = subtype;
PCOW(pcop)->matched = NULL;
return pcop;
}
+/*-----------------------------------------------------------------*/
+/* Find a symbol with matching name */
+/*-----------------------------------------------------------------*/
+static symbol *symFindWithName(memmap * map, const char *name)
+{
+ symbol *sym;
+
+ for (sym = setFirstItem(map->syms); sym; sym = setNextItem (map->syms)) {
+ if (sym->rname && (strcmp(sym->rname,name)==0))
+ return sym;
+ }
+ return 0;
+}
-pCodeOp *newpCodeOpBit(char *s, int bit, int inBitSpace)
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+pCodeOp *newpCodeOpBit(char *name, int ibit, int inBitSpace)
{
pCodeOp *pcop;
-
- pcop = Safe_calloc(1,sizeof(pCodeOpBit) );
- pcop->type = PO_BIT;
- if(s)
- pcop->name = Safe_strdup(s);
- else
+ 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) {
+ r = allocNewDirReg(sym->etype,name);
+ }
+ }
+ if (r) {
pcop->name = NULL;
-
- PCOB(pcop)->bit = bit;
- PCOB(pcop)->inBitSpace = inBitSpace;
-
+ 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 *pcop;
pcop = Safe_calloc(1,sizeof(pCodeOpReg) );
- PCOR(pcop)->rIdx = rIdx;
- PCOR(pcop)->r = pic14_regWithIdx(rIdx);
+ 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;
+
+ return pcop;
+}
+
+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;
}
+
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
switch(type) {
case PO_BIT:
+ case PO_GPR_BIT:
pcop = newpCodeOpBit(name, -1,0);
break;
break;
case PO_LABEL:
- pcop = newpCodeOpLabel(-1);
+ 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:
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 */
/*-----------------------------------------------------------------*/
void addpCode2pBlock(pBlock *pb, pCode *pc)
{
+
+ if(!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->next = NULL;
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(the_pFile));
+ //_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 = pb;
}
+/*-----------------------------------------------------------------*/
+/* removepBlock - remove a pBlock from the pFile */
+/*-----------------------------------------------------------------*/
+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__);
+
+}
+
/*-----------------------------------------------------------------*/
/* printpCode - write the contents of a pCode to a file */
/*-----------------------------------------------------------------*/
/* */
/*-----------------------------------------------------------------*/
-static void unlinkPC(pCode *pc)
+void unlinkpCode(pCode *pc)
{
if(pc) {
-
+#ifdef PCODE_DEBUG
+ fprintf(stderr,"Unlinking: ");
+ printpCode(stderr, pc);
+#endif
if(pc->prev)
pc->prev->next = pc->next;
if(pc->next)
pc->prev = pc->next = NULL;
}
}
-static void genericDestruct(pCode *pc)
-{
- fprintf(stderr,"warning, calling default pCode destructor\n");
-
- unlinkPC(pc);
-
- free(pc);
-
-}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
-void pBlockRegs(FILE *of, pBlock *pb)
+static void genericDestruct(pCode *pc)
{
- regs *r;
+ unlinkpCode(pc);
- r = setFirstItem(pb->registers);
- while (r) {
- r = setNextItem(pb->registers);
+ 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.
+ */
-static char *get_op( pCodeInstruction *pcc)
-{
- regs *r;
-
- if(pcc && pcc->pcop) {
+ pc->type = PC_BAD;
+ addpCode2pBlock(pb_dead_pcodes, pc);
- switch(pcc->pcop->type) {
+ //free(pc);
- case PO_FSR:
- case PO_GPR_TEMP:
- case PO_GPR_BIT:
- r = pic14_regWithIdx(PCOR(pcc->pcop)->r->rIdx);
- //fprintf(stderr,"getop: getting %s\nfrom:\n",r->name); //pcc->pcop->name);
- pBlockRegs(stderr,pcc->pc.pb);
- return r->name;
+}
- default:
- if (pcc->pcop->name)
- return pcc->pcop->name;
+/*-----------------------------------------------------------------*/
+/* 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;
}
}
-
- return "NO operand";
+ PCI(pcd)->pcflow = pcflow;
}
/*-----------------------------------------------------------------*/
+/* pCodeInsertAfter - splice in the pCode chain starting with pc2 */
+/* into the pCode chain containing pc1 */
/*-----------------------------------------------------------------*/
-static void pCodeOpPrint(FILE *of, pCodeOp *pcop)
+void pCodeInsertAfter(pCode *pc1, pCode *pc2)
{
- fprintf(of,"pcodeopprint\n");
+ 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);
}
-char *pCode2str(char *str, int size, pCode *pc)
+/*------------------------------------------------------------------*/
+/* pCodeInsertBefore - splice in the pCode chain starting with pc2 */
+/* into the pCode chain containing pc1 */
+/*------------------------------------------------------------------*/
+void pCodeInsertBefore(pCode *pc1, pCode *pc2)
{
- char *s = str;
+
+ 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 */
+/*-----------------------------------------------------------------*/
+pCodeOp *pCodeOpCopy(pCodeOp *pcop)
+{
+ pCodeOp *pcopnew=NULL;
+
+ if(!pcop)
+ return NULL;
+
+ switch(pcop->type) {
+ case PO_CRY:
+ case PO_BIT:
+ //DFPRINTF((stderr,"pCodeOpCopy bit\n"));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpRegBit) );
+ PCORB(pcopnew)->bit = PCORB(pcop)->bit;
+ PCORB(pcopnew)->inBitSpace = PCORB(pcop)->inBitSpace;
+
+ 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;
+
+ case PO_LABEL:
+ //DFPRINTF((stderr,"pCodeOpCopy label\n"));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpLabel) );
+ PCOLAB(pcopnew)->key = PCOLAB(pcop)->key;
+ break;
+
+ case PO_IMMEDIATE:
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpImmd) );
+ PCOI(pcopnew)->index = PCOI(pcop)->index;
+ PCOI(pcopnew)->offset = PCOI(pcop)->offset;
+ PCOI(pcopnew)->_const = PCOI(pcop)->_const;
+ PCOI(pcopnew)->_function = PCOI(pcop)->_function;
+ break;
+
+ case PO_LITERAL:
+ //DFPRINTF((stderr,"pCodeOpCopy lit\n"));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpLit) );
+ PCOL(pcopnew)->lit = PCOL(pcop)->lit;
+ break;
+
+ case PO_GPR_BIT:
+
+ pcopnew = newpCodeOpBit(pcop->name, PCORB(pcop)->bit,PCORB(pcop)->inBitSpace);
+ PCOR(pcopnew)->r = PCOR(pcop)->r;
+ PCOR(pcopnew)->rIdx = PCOR(pcop)->rIdx;
+ DFPRINTF((stderr," pCodeOpCopy Bit -register index\n"));
+ return pcopnew;
+ break;
+
+ case PO_GPR_POINTER:
+ case PO_GPR_REGISTER:
+ case PO_GPR_TEMP:
+ case PO_FSR:
+ case PO_INDF:
+ //DFPRINTF((stderr,"pCodeOpCopy GPR register\n"));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpReg) );
+ PCOR(pcopnew)->r = PCOR(pcop)->r;
+ PCOR(pcopnew)->rIdx = PCOR(pcop)->rIdx;
+ PCOR(pcopnew)->instance = PCOR(pcop)->instance;
+ DFPRINTF((stderr," register index %d\n", PCOR(pcop)->r->rIdx));
+ break;
+
+ case PO_DIR:
+ //fprintf(stderr,"pCodeOpCopy PO_DIR\n");
+ pcopnew = Safe_calloc(1,sizeof(pCodeOpReg) );
+ PCOR(pcopnew)->r = PCOR(pcop)->r;
+ PCOR(pcopnew)->rIdx = PCOR(pcop)->rIdx;
+ PCOR(pcopnew)->instance = PCOR(pcop)->instance;
+ break;
+ case PO_STATUS:
+ DFPRINTF((stderr,"pCodeOpCopy PO_STATUS\n"));
+ case PO_SFR_REGISTER:
+ case PO_STR:
+ case PO_NONE:
+ case PO_W:
+ case PO_INTCON:
+ case PO_PCL:
+ case PO_PCLATH:
+
+ //DFPRINTF((stderr,"pCodeOpCopy register type %d\n", pcop->type));
+ pcopnew = Safe_calloc(1,sizeof(pCodeOp) );
+
+ }
+
+ pcopnew->type = pcop->type;
+ if(pcop->name)
+ pcopnew->name = Safe_strdup(pcop->name);
+ else
+ pcopnew->name = NULL;
+
+ return pcopnew;
+}
+
+/*-----------------------------------------------------------------*/
+/* 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;
+
+ pcor->r = pc->r;
+ pcor->rIdx = pc->rIdx;
+ pcor->r->wasUsed=1;
+
+ //DEBUGpic14_emitcode ("; ***","%s , copying %s, rIdx=%d",__FUNCTION__,pc->pcop.name,pc->rIdx);
+
+ return PCOP(pcor);
+}
+
+/*-----------------------------------------------------------------*/
+/* 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);
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+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;
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+void pBlockRegs(FILE *of, pBlock *pb)
+{
+
+ regs *r;
+
+ r = setFirstItem(pb->tregisters);
+ while (r) {
+ r = setNextItem(pb->tregisters);
+ }
+}
+
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+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) {
+ SAFE_snprintf(&buffer,&size,"%s",PCOR(pcop)->r->name);
+ return buffer;
+ }
+ //return PCOR(pcop)->r->name;
+ 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) {
+ SAFE_snprintf(&buffer,&size,"%s",r->name);
+ return buffer;
+ }
+
+ return r->name;
+
+
+ case PO_IMMEDIATE:
+ s = buffer;
+
+ if(PCOI(pcop)->_const) {
+
+ if( PCOI(pcop)->offset && PCOI(pcop)->offset<4) {
+ switch(PCOI(pcop)->offset) {
+ case 0:
+ SAFE_snprintf(&s,&size,"low %s",pcop->name);
+ break;
+ case 1:
+ SAFE_snprintf(&s,&size,"high %s",pcop->name);
+ break;
+ default:
+ 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 {
+ switch(PCOI(pcop)->offset) {
+ case 0:
+ SAFE_snprintf(&s,&size,"%s",pcop->name);
+ break;
+ case 1:
+ SAFE_snprintf(&s,&size,"high %s",pcop->name);
+ break;
+ default:
+ SAFE_snprintf(&s,&size,"(%s >> %d)&0xff",pcop->name, 8*PCOI(pcop)->offset);
+ }
+ }
+ }
+
+ 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;
+
+ case PO_LABEL:
+ s = buffer;
+ if (pcop->name) {
+ if(PCOLAB(pcop)->offset == 1)
+ SAFE_snprintf(&s,&size,"HIGH(%s)",pcop->name);
+ 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;
+ }
+ return pcop->name;
+ }
+
+ }
+ }
+
+ return "NO operand";
+
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static char *get_op_from_instruction( pCodeInstruction *pcc)
+{
+
+ if(pcc )
+ return get_op(pcc->pcop,NULL,0);
+
+ /* gcc 3.2: warning: concatenation of string literals with __FUNCTION__ is deprecated
+ return ("ERROR Null: "__FUNCTION__);
+ */
+ return ("ERROR Null: get_op_from_instruction");
+
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void pCodeOpPrint(FILE *of, pCodeOp *pcop)
+{
+
+ fprintf(of,"pcodeopprint- not implemented\n");
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+char *pCode2str(char *str, size_t size, pCode *pc)
+{
+ char *s = str;
switch(pc->type) {
if( (PCI(pc)->num_ops >= 1) && (PCI(pc)->pcop)) {
- if(PCI(pc)->bit_inst) {
- if(PCI(pc)->pcop->type == PO_BIT) {
- if( (((pCodeOpBit *)(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(PCI(pc)),
- (((pCodeOpBit *)(PCI(pc)->pcop))->bit ));
+ 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) )
+ SAFE_snprintf(&s,&size,"(%s >> 3), (%s & 7)", name, name);
+ else
+ SAFE_snprintf(&s,&size,"%s,%d", name,
+ (((pCodeOpRegBit *)(PCI(pc)->pcop))->bit)&7);
} else if(PCI(pc)->pcop->type == PO_GPR_BIT) {
- SAFE_snprintf(&s,&size,"%s,%d", get_op(PCI(pc)),PCORB(PCI(pc)->pcop)->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(PCI(pc)));
+ 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_BIT) {
+ if(PCI(pc)->pcop->type == PO_GPR_BIT) {
if( PCI(pc)->num_ops == 2)
- SAFE_snprintf(&s,&size,"(%s >> 3),%c",get_op(PCI(pc)),((PCI(pc)->dest) ? 'F':'W'));
+ 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(PCI(pc)));
+ SAFE_snprintf(&s,&size,"(1 << (%s & 7))",get_op_from_instruction(PCI(pc)));
}else {
- SAFE_snprintf(&s,&size,"%s",get_op(PCI(pc)));
+ SAFE_snprintf(&s,&size,"%s",get_op_from_instruction(PCI(pc)));
if( PCI(pc)->num_ops == 2)
- SAFE_snprintf(&s,&size,",%c", ( (PCI(pc)->dest) ? 'F':'W'));
+ SAFE_snprintf(&s,&size,",%c", ( (PCI(pc)->isModReg) ? 'F':'W'));
}
}
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_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;
+ case PC_BAD:
+ SAFE_snprintf(&s,&size,";A bad pCode is being used\n");
}
return str;
fprintf(of,";%s\n", ((pCodeComment *)pc)->comment);
break;
+ case PC_INLINE:
+ fprintf(of,"%s\n", ((pCodeComment *)pc)->comment);
+ break;
+
case PC_OPCODE:
// If the opcode has a label, print that first
{
- pBranch *pbl = pc->label;
- while(pbl) {
+ pBranch *pbl = PCI(pc)->label;
+ while(pbl && pbl->pc) {
if(pbl->pc->type == PC_LABEL)
pCodePrintLabel(of, pbl->pc);
pbl = pbl->next;
}
}
+ if(PCI(pc)->cline)
+ genericPrint(of,PCODE(PCI(pc)->cline));
{
char str[256];
pCode2str(str, 256, pc);
fprintf(of,"%s",str);
- }
+ /* Debug */
+ if(debug_verbose) {
+ fprintf(of, "\t;id=%u,key=%03x",pc->id,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) {
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;
}
- fprintf(of,"\n");
}
-
+#endif
+ fprintf(of,"\n");
break;
case PC_WILD:
fprintf(of,";\tWild opcode: id=%d\n",PCW(pc)->id);
- if(pc->label)
- pCodePrintLabel(of, pc->label->pc);
+ if(PCW(pc)->pci.label)
+ pCodePrintLabel(of, PCW(pc)->pci.label->pc);
if(PCW(pc)->operand) {
fprintf(of,";\toperand ");
}
break;
+ case PC_FLOW:
+ 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");
+
+ }
+ break;
+
+ case PC_CSOURCE:
+ fprintf(of,";#CSRC\t%s %d\n; %s\n", PCCS(pc)->file_name, PCCS(pc)->line_number, PCCS(pc)->line);
+ break;
case PC_LABEL:
default:
fprintf(of,"unknown pCode type %d\n",pc->type);
fprintf(of,"F_%s",((pCodeFunction *)pc)->modname);
if(PCF(pc)->fname) {
- pBranch *exits = pc->to;
+ pBranch *exits = PCF(pc)->to;
int i=0;
fprintf(of,"%s\t;Function start\n",PCF(pc)->fname);
while(exits) {
fprintf(of,"; %d exit point%c\n",i, ((i==1) ? ' ':'s'));
}else {
- if(pc->from &&
- pc->from->pc->type == PC_FUNCTION &&
- PCF(pc->from->pc)->fname)
- fprintf(of,"; exit point of %s\n",PCF(pc->from->pc)->fname);
+ 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");
}
}
/*-----------------------------------------------------------------*/
-static void unlinkpCodeFromBranch(pBranch *pb , pCode *pc)
+/* unlinkpCodeFromBranch - Search for a label in a pBranch and */
+/* remove it if it is found. */
+/*-----------------------------------------------------------------*/
+static void unlinkpCodeFromBranch(pCode *pcl , pCode *pc)
{
pBranch *b, *bprev;
+
bprev = NULL;
- b = pb;
+
+ if(pcl->type == PC_OPCODE)
+ 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) {
- if(bprev)
- bprev->next = b->next;
+ //fprintf (stderr, "found label\n");
+
+ /* Found a label */
+ if(bprev) {
+ 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);
+ }
+ 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;
+ if(h == n)
+ return n;
+
b = h;
while(b->next)
b = b->next;
/* pBranchLink - given two pcodes, this function will link them */
/* together through their pBranches */
/*-----------------------------------------------------------------*/
-static void pBranchLink(pCode *f, pCode *t)
+static void pBranchLink(pCodeFunction *f, pCodeFunction *t)
{
pBranch *b;
// Declare a new branch object for the 'from' pCode.
- _ALLOC(b,sizeof(pBranch));
- b->pc = t; // The link to the 'to' 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->pc = f;
+ //_ALLOC(b,sizeof(pBranch));
+ b = Safe_calloc(1,sizeof(pBranch));
+ b->pc = PCODE(f);
b->next = NULL;
t->from = pBranchAppend(t->from,b);
#endif
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
+#if 0
static void genericAnalyze(pCode *pc)
{
switch(pc->type) {
} 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;
+ case PC_BAD:
+ fprintf(stderr,";A bad pCode is being used\n");
+
}
}
+#endif
+/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
int compareLabel(pCode *pc, pCodeOpLabel *pcop_label)
{
return TRUE;
}
if(pc->type == PC_OPCODE) {
- pbr = pc->label;
+ pbr = PCI(pc)->label;
while(pbr) {
if(pbr->pc->type == PC_LABEL) {
if( ((pCodeLabel *)(pbr->pc))->key == pcop_label->key)
return FALSE;
}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+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;
+}
+
+/*-----------------------------------------------------------------*/
+/* 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 */
/*-----------------------------------------------------------------*/
return NULL;
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- for(pc = pb->pcHead; pc; pc = pc->next)
- if(compareLabel(pc,pcop_label))
- return pc;
-
+ if( (pc = findLabelinpBlock(pb,pcop_label)) != NULL)
+ return pc;
}
fprintf(stderr,"Couldn't find label %s", pcop_label->pcop.name);
return NULL;
}
+/*-----------------------------------------------------------------*/
+/* findNextpCode - given a pCode, find the next of type 'pct' */
+/* in the linked list */
+/*-----------------------------------------------------------------*/
+pCode * findNextpCode(pCode *pc, PC_TYPE pct)
+{
+
+ while(pc) {
+ if(pc->type == pct)
+ return pc;
+
+ pc = pc->next;
+ }
+
+ return NULL;
+}
+
+/*-----------------------------------------------------------------*/
+/* findPrevpCode - given a pCode, find the previous of type 'pct' */
+/* in the linked list */
+/*-----------------------------------------------------------------*/
+pCode * findPrevpCode(pCode *pc, PC_TYPE pct)
+{
+
+ while(pc) {
+ if(pc->type == pct)
+ return pc;
+
+ pc = pc->prev;
+ }
+
+ return NULL;
+}
/*-----------------------------------------------------------------*/
/* findNextInstruction - given a pCode, find the next instruction */
/* in the linked list */
/*-----------------------------------------------------------------*/
-pCode * findNextInstruction(pCode *pc)
+pCode * findNextInstruction(pCode *pci)
{
+ pCode *pc = pci;
while(pc) {
if((pc->type == PC_OPCODE) || (pc->type == PC_WILD))
return pc;
+#ifdef PCODE_DEBUG
+ fprintf(stderr,"findNextInstruction: ");
+ printpCode(stderr, pc);
+#endif
pc = pc->next;
}
- fprintf(stderr,"Couldn't find instruction\n");
+ //fprintf(stderr,"Couldn't find instruction\n");
return NULL;
}
+/*-----------------------------------------------------------------*/
+/* findNextInstruction - given a pCode, find the next instruction */
+/* in the linked list */
+/*-----------------------------------------------------------------*/
+pCode * findPrevInstruction(pCode *pci)
+{
+ return findPrevpCode(pci, PC_OPCODE);
+}
+
/*-----------------------------------------------------------------*/
/* findFunctionEnd - given a pCode find the end of the function */
-/* that contains it t */
+/* that contains it */
/*-----------------------------------------------------------------*/
pCode * findFunctionEnd(pCode *pc)
{
}
#endif
+#if 0
static void AnalyzeGOTO(pCode *pc)
{
}
+#endif
-void AnalyzepBlock(pBlock *pb)
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+regs * getRegFromInstruction(pCode *pc)
{
- pCode *pc;
- if(!pb)
- return;
+ 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 PCOR(PCI(pc)->pcop)->r;
+
+ // 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:
+ if(PCOI(PCI(pc)->pcop)->r)
+ return (PCOI(PCI(pc)->pcop)->r);
+
+ //fprintf(stderr, "getRegFromInstruction - immediate\n");
+ return dirregWithName(PCI(pc)->pcop->name);
+ //return NULL; // PCOR(PCI(pc)->pcop)->r;
+
+ case PO_GPR_BIT:
+ return PCOR(PCI(pc)->pcop)->r;
+
+ case PO_GPR_REGISTER:
+ 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;
+
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+
+void AnalyzepBlock(pBlock *pb)
+{
+ pCode *pc;
+
+ if(!pb)
+ return;
- /* Find all of the registers used in this pBlock */
+ /* 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(pc->type == PC_OPCODE) {
- if(PCI(pc)->pcop && PCI(pc)->pcop->type == PO_GPR_TEMP) {
+
+ /* 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 new there */
+ this block and see if we find this one there */
- regs *r = setFirstItem(pb->registers);
+ regs *r = setFirstItem(pb->tregisters);
while(r) {
- if(r->rIdx == PCOR(PCI(pc)->pcop)->r->rIdx) {
+ 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->registers);
+ 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");
}
+ }
+ }
+
+
+ }
+}
+
+/*-----------------------------------------------------------------*/
+/* */
+/*-----------------------------------------------------------------*/
+void InsertpFlow(pCode *pc, pCode **pflow)
+{
+ if(*pflow)
+ PCFL(*pflow)->end = pc;
+
+ if(!pc || !pc->next)
+ return;
+
+ *pflow = newpCodeFlow();
+ pCodeInsertAfter(pc, *pflow);
+}
+
+/*-----------------------------------------------------------------*/
+/* 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.
+ */
+/*-----------------------------------------------------------------*/
+void BuildFlow(pBlock *pb)
+{
+ 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: ");
+ //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;
+
+ 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 ( PCI(pc)->isBranch && !checkLabel(findNextInstruction(pc->next))) {
+
+ InsertpFlow(pc, &pflow);
+ seq = 0;
+
+ } else 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.) */
+
+ if(last_pci && (PCI(last_pci)->pcflow == PCFL(pflow)))
+ InsertpFlow(findPrevInstruction(pc->prev), &pflow);
+
+ PCI(pc)->pcflow = PCFL(pflow);
+
+ }
+ last_pci = pc;
+ pc = pc->next;
+ }
+
+ //fprintf (stderr,",end seq %d",GpcFlowSeq);
+ if(pflow)
+ PCFL(pflow)->end = pb->pcTail;
+}
+
+/*-------------------------------------------------------------------*/
+/* 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)
+{
+ 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;
+ }
+
+
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+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]);
+
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+void FlowStats(pCodeFlow *pcflow)
+{
+
+ 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);
+
+}
+
+/*-----------------------------------------------------------------*
+ * 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
+
+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;
+}
+*/
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+/*
+static void FillFlow(pCodeFlow *pcflow)
+{
+ 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);
+* /
+}
+*/
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+void LinkFlow_pCode(pCodeInstruction *from, pCodeInstruction *to)
+{
+ pCodeFlowLink *fromLink, *toLink;
+
+ 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);
+
+}
+
+/*-----------------------------------------------------------------*
+ * 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.
+ *-----------------------------------------------------------------*/
+void LinkFlow(pBlock *pb)
+{
+ pCode *pc=NULL;
+ pCode *pcflow;
+ pCode *pct;
+
+ //fprintf(stderr,"linkflow \n");
+
+ 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));
+
+ pc = PCFL(pcflow)->end;
+
+ //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);
+
+ //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__);
+ }
+ continue;
+ }
+
+ 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:""));
+
+ 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");
+
+ }
+}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+int isPCinFlow(pCode *pc, pCode *pcflow)
+{
+
+ if(!pc || !pcflow)
+ return 0;
+
+ if(!isPCI(pc) || !PCI(pc)->pcflow || !isPCFL(pcflow) )
+ return 0;
+
+ if( PCI(pc)->pcflow->pc.seq == pcflow->seq)
+ return 1;
+
+ return 0;
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+/*
+static 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);
+}
+*/
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+/*
+static 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);
+ }
+
+}
+*/
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void pCodeInstructionInsertAfter(pCodeInstruction *pci, pCodeInstruction *new_pci)
+{
+
+ 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;
+ }
+
+ /* 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;
+
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void insertBankSwitch(pCodeInstruction *pci, int Set_Clear, int RP_BankBit)
+{
+ pCode *new_pc;
+
+ new_pc = newpCode((Set_Clear?POC_BSF:POC_BCF),popCopyGPR2Bit(PCOP(&pc_status),RP_BankBit));
+
+ pCodeInstructionInsertAfter(pci, PCI(new_pc));
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void insertBankSel(pCodeInstruction *pci, const char *name)
+{
+ pCode *new_pc;
+
+ pCodeOp *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);
+
+ pCodeInstructionInsertAfter(pci, PCI(new_pc));
+}
+
+/*-----------------------------------------------------------------*/
+/* If the register is a fixed known addess then we can assign the */
+/* bank selection bits. Otherwise the linker is going to assign */
+/* the register location and thus has to set bank selection bits */
+/* through the banksel directive. */
+/* One critical assumption here is that within this C module all */
+/* the locally allocated registers are in the same udata sector. */
+/* Therefore banksel is only called for external registers or the */
+/* first time a local register is encountered. */
+/*-----------------------------------------------------------------*/
+static int LastRegIdx; /* If the previous register is the same one again then no need to change bank. */
+static int BankSelect(pCodeInstruction *pci, int cur_bank, regs *reg)
+{
+ int bank;
+ int a = reg->alias>>7;
+ if ((a&3) == 3) {
+ return cur_bank; // This register is available in all banks
+ } else if ((a&1)&&((cur_bank==0)||(cur_bank==1))) {
+ return cur_bank; // This register is available in banks 0 & 1
+ } else if (a&2) {
+ if (reg->address&0x80) {
+ if ((cur_bank==1)||(cur_bank==3)) {
+ return cur_bank; // This register is available in banks 1 & 3
+ }
+ } else {
+ if ((cur_bank==0)||(cur_bank==1)) {
+ return cur_bank; // This register is available in banks 0 & 2
+ }
+ }
+ }
+
+ if (LastRegIdx == reg->rIdx) // If this is the same register as last time then it is in same bank
+ return cur_bank;
+ LastRegIdx = reg->rIdx;
+
+ if (reg->isFixed) {
+ bank = REG_BANK(reg);
+ } else if (reg->isExtern) {
+ bank = 'E'; // Unfixed extern registers are allocated by the linker therefore its bank is unknown
+ } else {
+ bank = 'L'; // Unfixed local registers are allocated by the linker therefore its bank is unknown
+ }
+ if ((cur_bank == 'L')&&(bank == 'L')) { // If current bank and new bank are both allocated locally by the linker, then assume it is in same bank.
+ return 'L'; // Local registers are presumed to be in same linker assigned bank
+ } else if ((bank == 'L')&&(cur_bank != 'L')) { // Reg is now local and linker to assign bank
+ insertBankSel(pci, reg->name); // Let linker choose the bank selection
+ } else if (bank == 'E') { // Reg is now extern and linker to assign bank
+ insertBankSel(pci, reg->name); // Let linker choose the bank selection
+ } else if ((cur_bank == -1)||(cur_bank == 'L')||(cur_bank == 'E')) { // Current bank unknown and new register bank is known then can set bank bits
+ insertBankSwitch(pci, bank&1, PIC_RP0_BIT);
+ insertBankSwitch(pci, bank&2, PIC_RP1_BIT);
+ } else { // Current bank and new register banks known - can set bank bits
+ switch((cur_bank^bank) & 3) {
+ case 0:
+ break;
+ case 1:
+ insertBankSwitch(pci, bank&1, PIC_RP0_BIT);
+ break;
+ case 2:
+ insertBankSwitch(pci, bank&2, PIC_RP1_BIT);
+ break;
+ case 3:
+ insertBankSwitch(pci, bank&1, PIC_RP0_BIT);
+ insertBankSwitch(pci, bank&2, PIC_RP1_BIT);
+ break;
+ }
+ }
+
+ return bank;
+}
+
+/*-----------------------------------------------------------------*/
+/* Check for bank selection pcodes instructions and modify */
+/* cur_bank to match. */
+/*-----------------------------------------------------------------*/
+static int IsBankChange(pCode *pc, regs *reg, int *cur_bank) {
+
+ if (isSTATUS_REG(reg)) {
+
+ if (PCI(pc)->op == POC_BCF) {
+ int old_bank = *cur_bank;
+ if (PCORB(PCI(pc)->pcop)->bit == PIC_RP0_BIT) {
+ /* If current bank is unknown or linker assigned then set to 0 else just change the bit */
+ if (*cur_bank & ~(0x3))
+ *cur_bank = 0;
+ else
+ *cur_bank = *cur_bank&0x2;
+ LastRegIdx = reg->rIdx;
+ } else if (PCORB(PCI(pc)->pcop)->bit == PIC_RP1_BIT) {
+ /* If current bank is unknown or linker assigned then set to 0 else just change the bit */
+ if (*cur_bank & ~(0x3))
+ *cur_bank = 0;
+ else
+ *cur_bank = *cur_bank&0x1;
+ LastRegIdx = reg->rIdx;
+ }
+ return old_bank != *cur_bank;
+ }
+
+ if (PCI(pc)->op == POC_BSF) {
+ int old_bank = *cur_bank;
+ if (PCORB(PCI(pc)->pcop)->bit == PIC_RP0_BIT) {
+ /* If current bank is unknown or linker assigned then set to bit else just change the bit */
+ if (*cur_bank & ~(0x3))
+ *cur_bank = 0x1;
+ else
+ *cur_bank = (*cur_bank&0x2) | 0x1;
+ LastRegIdx = reg->rIdx;
+ } else if (PCORB(PCI(pc)->pcop)->bit == PIC_RP1_BIT) {
+ /* If current bank is unknown or linker assigned then set to bit else just change the bit */
+ if (*cur_bank & ~(0x3))
+ *cur_bank = 0x2;
+ else
+ *cur_bank = (*cur_bank&0x1) | 0x2;
+ LastRegIdx = reg->rIdx;
+ }
+ return old_bank != *cur_bank;
+ }
+
+ } else if (PCI(pc)->op == POC_BANKSEL) {
+ int old_bank = *cur_bank;
+ *cur_bank = (PCOR(PCI(pc)->pcop)->r->isExtern) ? 'E' : 'L';
+ LastRegIdx = reg->rIdx;
+ return old_bank != *cur_bank;
+ }
+
+ return 0;
+}
+
+/*-----------------------------------------------------------------*/
+/* Set bank selection if necessary */
+/*-----------------------------------------------------------------*/
+static int DoBankSelect(pCode *pc, int cur_bank) {
+ pCode *pcprev;
+ regs *reg;
+
+ if(!isPCI(pc))
+ return cur_bank;
+
+ if (isCALL(pc)) {
+ pCode *pcf = findFunction(get_op_from_instruction(PCI(pc)));
+ if (pcf && isPCF(pcf)) {
+ pCode *pcfr;
+ int rbank = 'U'; // Undetermined
+ FixRegisterBanking(pcf->pb,cur_bank); // Ensure this block has had its banks selection done
+ // Check all the returns to work out what bank is selected
+ for (pcfr=pcf->pb->pcHead; pcfr; pcfr=pcfr->next) {
+ if (isPCI(pcfr)) {
+ if ((PCI(pcfr)->op==POC_RETURN) || (PCI(pcfr)->op==POC_RETLW)) {
+ if (rbank == 'U')
+ rbank = PCFL(pcfr)->lastBank;
+ else
+ if (rbank != PCFL(pcfr)->lastBank)
+ return -1; // Unknown bank - multiple returns with different banks
+ }
+ }
+ }
+ if (rbank == 'U')
+ return -1; // Unknown bank
+ return rbank;
+ } else if (isPCOS(PCI(pc)->pcop) && PCOS(PCI(pc)->pcop)->isPublic) {
+ /* Extern functions may use registers in different bank - must call banksel */
+ return -1; /* Unknown bank */
+ }
+ }
+
+ if ((isPCI(pc)) && (PCI(pc)->op == POC_BANKSEL)) {
+ return -1; /* New bank unknown - linkers choice. */
+ }
+
+ reg = getRegFromInstruction(pc);
+ if (reg) {
+
+ if (IsBankChange(pc,reg,&cur_bank))
+ return cur_bank;
+
+ if (!isPCI_LIT(pc)) {
+
+ /* 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))) {
+ cur_bank = BankSelect(PCI(pc),cur_bank,reg);
+ } else {
+ cur_bank = BankSelect(PCI(pcprev),cur_bank,reg);
+ }
+ if (!PCI(pc)->pcflow)
+ fprintf(stderr,"PCI ID=%d missing flow pointer ???\n",pc->id);
+ else
+ PCI(pc)->pcflow->lastBank = cur_bank; /* Maintain pCodeFlow lastBank state */
+ }
+ }
+ return cur_bank;
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+/*
+static void FixRegisterBankingInFlow(pCodeFlow *pcfl, int cur_bank)
+{
+ pCode *pc=NULL;
+ pCode *pcprev=NULL;
+
+ if(!pcfl)
+ return;
+
+ pc = findNextInstruction(pcfl->pc.next);
+
+ while(isPCinFlow(pc,PCODE(pcfl))) {
+
+ cur_bank = DoBankSelect(pc,cur_bank);
+ pcprev = pc;
+ pc = findNextInstruction(pc->next);
+
+ }
+
+ if(pcprev && cur_bank) {
+ // Set bank state to unknown at the end of each flow block
+ cur_bank = -1;
+ }
+
+}
+*/
+/*-----------------------------------------------------------------*/
+/*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),-1);
+ 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),-1);
+ 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);
+ }
+
+ }
- if(!r) {
- /* register wasn't found */
- r = Safe_calloc(1, sizeof(regs));
- memcpy(r,PCOR(PCI(pc)->pcop)->r, sizeof(regs));
- addSet(&pb->registers, 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);
+ 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;
+ pCode *pc, *pcprev;
int matches =0;
if(!pb || !peepOptimizing)
return 0;
- fprintf(stderr," Optimizing pBlock: %c\n",getpBlock_dbName(pb));
+ 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;
}
return NULL;
}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+void exchangeLabels(pCodeLabel *pcl, pCode *pc)
+{
+
+ 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);
+
+ }
+
+
+}
+
/*-----------------------------------------------------------------*/
/* pBlockRemoveUnusedLabels - remove the pCode labels from the */
/* pCode chain if they're not used. */
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(pc->type == PC_LABEL)
+ if(isPCL(pc)) // Label pcode
pcl = PCL(pc);
- else if (pc->label)
- pcl = PCL(pc->label->pc);
+ else if (isPCI(pc) && PCI(pc)->label) // pcode instruction with a label
+ pcl = PCL(PCI(pc)->label->pc);
else continue;
- /* This pCode is a label, so search the pBlock to see if anyone
- * refers to it */
+ //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);
- fprintf(stderr," !!! REMOVED A LABEL !!! key = %d\n", pcl->key);
-
+ DFPRINTF((stderr," !!! REMOVED A LABEL !!! key = %d, %s\n", pcl->key,pcl->label));
if(pc->type == PC_LABEL) {
- //unlinkPC(pc);
+ unlinkpCode(pc);
pCodeLabelDestruct(pc);
} else {
- unlinkpCodeFromBranch(pc->label, pc);
- if(pc->label->next == NULL && pc->label->pc == NULL) {
+ 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 */
+
+ pc = pb->pcHead;
+ // for(pc = pb->pcHead; pc; pc = pc->next) {
+
+ 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);
+
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+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;
+}
+
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void FixRegisterBanking(pBlock *pb,int cur_bank)
+{
+ pCode *pc;
+ int firstBank = 'U';
+
+ if(!pb)
+ return;
+
+ for (pc=pb->pcHead; pc; pc=pc->next) {
+ if (isPCFL(pc)) {
+ firstBank = PCFL(pc)->firstBank;
+ break;
+ }
+ }
+ if (firstBank != 'U') {
+ /* This block has already been done */
+ if (firstBank != cur_bank) {
+ /* This block has started with a different bank - must adjust it */
+ if ((firstBank != -1)&&(firstBank != 'E')) { /* The first bank start off unknown or extern then need not worry as banksel will be called */
+ while (pc) {
+ if (isPCI(pc)) {
+ regs *reg = getRegFromInstruction(pc);
+ if (reg) {
+ DoBankSelect(pc,cur_bank);
+ }
+ }
+ pc = pc->next;
+ }
+ }
+ }
+ return;
+ }
+
+ /* loop through all of the pCodes within this pblock setting the bank selection, ignoring any branching */
+ LastRegIdx = -1;
+ cur_bank = -1;
+ for (pc=pb->pcHead; pc; pc=pc->next) {
+ if (isPCFL(pc)) {
+ PCFL(pc)->firstBank = cur_bank;
+ continue;
+ }
+ cur_bank = DoBankSelect(pc,cur_bank);
+ }
+
+ /* Trace through branches and set the bank selection as required. */
+ LastRegIdx = -1;
+ cur_bank = -1;
+ for (pc=pb->pcHead; pc; pc=pc->next) {
+ if (isPCFL(pc)) {
+ PCFL(pc)->firstBank = cur_bank;
+ continue;
+ }
+ if (isPCI(pc)) {
+ if (PCI(pc)->op == POC_GOTO) {
+ int lastRegIdx = LastRegIdx;
+ pCode *pcb = pc;
+ /* Trace through branch */
+ pCode *pcl = findLabel(PCOLAB(PCI(pcb)->pcop));
+ while (pcl) {
+ if (isPCI(pcl)) {
+ regs *reg = getRegFromInstruction(pcl);
+ if (reg) {
+ int bankUnknown = -1;
+ if (IsBankChange(pcl,reg,&bankUnknown)) /* Look for any bank change */
+ break;
+ if (cur_bank != DoBankSelect(pcl,cur_bank)) /* Set bank selection if necessary */
+ break;
+ }
+ }
+ pcl = pcl->next;
+ }
+ LastRegIdx = lastRegIdx;
+ } else {
+ /* Keep track out current bank */
+ regs *reg = getRegFromInstruction(pc);
+ if (reg)
+ IsBankChange(pc,reg,&cur_bank);
+ }
+ }
+ }
+}
+
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+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;
+ }
+
+}
+
+/*-----------------------------------------------------------------*/
+/* 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. */
+/*-----------------------------------------------------------------*/
+
+void AnalyzeFlow(int level)
+{
+ static int times_called=0;
+
+ pBlock *pb;
+
+ if(!the_pFile)
+ return;
+
+
+ /* 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);
+
+ RegsUnMapLiveRanges();
+
+ }
+
+ GpcFlowSeq = 1;
+
+ /* 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 3 - Flow Analysis - Flow Tree
+ *
+ * In this phase, the individual flow blocks are examined
+ * to determine their order of excution.
+ */
+
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ BuildFlowTree(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)
+ pCodeRegOptimizeRegUsage(level);
+
+ OptimizepCode('*');
+
+
+/*
+ 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. */
+/* */
+/*-----------------------------------------------------------------*/
+
+void AnalyzeBanking(void)
+{
+ pBlock *pb;
+
+ if(!picIsInitialized()) {
+ fprintf(stderr,"Temporary ERROR: at the moment you have to use\n");
+ fprintf(stderr,"an include file create by inc2h.pl. See SDCC source:\n");
+ fprintf(stderr,"support/scripts/inc2h.pl\n");
+ fprintf(stderr,"this is a nuisance bug that will be fixed shortly\n");
+
+ exit(1);
+ }
+
+ /* 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)
+// BanksUsedFlow(pb);
+ for(pb = the_pFile->pbHead; pb; pb = pb->next)
+ FixRegisterBanking(pb,-1); // cur_bank is unknown
+}
/*-----------------------------------------------------------------*/
-/* 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)
+DEFSETFUNC (resetrIdx)
{
- pBranch *pbr;
- pCode *pc, *pcnext=NULL;
-
- if(!pb)
- return;
-
- /* First, Try to remove any unused labels */
- //pBlockRemoveUnusedLabels(pb);
+ if (!((regs *)item)->isFixed)
+ ((regs *)item)->rIdx = 0;
- /* Now loop through the pBlock and merge the labels with the opcodes */
+ return 0;
+}
- for(pc = pb->pcHead; pc; pc = pc->next) {
+/*-----------------------------------------------------------------*/
+/* InitRegReuse - Initialises variables for code analyzer */
+/*-----------------------------------------------------------------*/
- if(pc->type == PC_LABEL) {
- fprintf(stderr,"Checking label key = %d\n",PCL(pc)->key);
- if( !(pcnext = findNextInstruction(pc)) )
- return; // Couldn't find an instruction associated with this label
-
- // Unlink the pCode label from it's pCode chain
- unlinkPC(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->pc = pc;
- pbr->next = NULL;
-
- pcnext->label = pBranchAppend(pcnext->label,pbr);
- if(pcnext->prev)
- pc = pcnext->prev;
- else
- pc = pcnext;
+void InitReuseReg(void)
+{
+ /* Find end of statically allocated variables for start idx */
+ unsigned maxIdx = 0x20; /* Start from begining of GPR. Note may not be 0x20 on some PICs */
+ regs *r;
+ for (r = setFirstItem(dynDirectRegs); r; r = setNextItem(dynDirectRegs)) {
+ if (r->type != REG_SFR) {
+ maxIdx += r->size; /* Increment for all statically allocated variables */
+ }
}
-
- }
- pBlockRemoveUnusedLabels(pb);
-
+ peakIdx = maxIdx;
+ applyToSet(dynAllocRegs,resetrIdx); /* Reset all rIdx to zero. */
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-void OptimizepCode(char dbName)
+static unsigned register_reassign(pBlock *pb, unsigned idx)
{
-#define MAX_PASSES 4
+ pCode *pc;
- int matches = 0;
- int passes = 0;
- pBlock *pb;
+ /* check recursion */
+ pc = setFirstItem(pb->function_entries);
+ if(!pc)
+ return idx;
- if(!the_pFile)
- return;
+ pb->visited = 1;
- fprintf(stderr," Optimizing pCode\n");
+ DFPRINTF((stderr," reassigning registers for function \"%s\"\n",PCF(pc)->fname));
+
+ if (pb->tregisters) {
+ regs *r;
+ for (r = setFirstItem(pb->tregisters); r; r = setNextItem(pb->tregisters)) {
+ if (r->type == REG_GPR) {
+ if (!r->isFixed) {
+ if (r->rIdx < (int)idx) {
+ char s[20];
+ r->rIdx = idx++;
+ if (peakIdx < idx) peakIdx = idx;
+ sprintf(s,"r0x%02X", r->rIdx);
+ DFPRINTF((stderr," reassigning register \"%s\" to \"%s\"\n",r->name,s));
+ free(r->name);
+ r->name = Safe_strdup(s);
+ }
+ }
+ }
+ }
+ }
+ for(pc = setFirstItem(pb->function_calls); pc; pc = setNextItem(pb->function_calls)) {
- do {
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if('*' == dbName || getpBlock_dbName(pb) == dbName)
- matches += OptimizepBlock(pb);
+ if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
+ char *dest = get_op_from_instruction(PCI(pc));
+
+ pCode *pcn = findFunction(dest);
+ if(pcn) {
+ register_reassign(pcn->pb,idx);
+ }
}
+
}
- while(matches && ++passes < MAX_PASSES);
+ return idx;
+}
+
+/*------------------------------------------------------------------*/
+/* 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 fucntions need to be declared static. */
+/* */
+/*------------------------------------------------------------------*/
+void ReuseReg(void)
+{
+ pBlock *pb;
+ 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);
+ }
}
/*-----------------------------------------------------------------*/
-/* AnalyzepCode - parse the pCode that has been generated and form */
-/* all of the logical connections. */
+/* buildCallTree - look at the flow and extract all of the calls */
/* */
-/* Essentially what's done here is that the pCode flow is */
-/* determined. */
/*-----------------------------------------------------------------*/
-void AnalyzepCode(char dbName)
+void buildCallTree(void )
{
- pBlock *pb;
- pCode *pc;
pBranch *pbr;
+ pBlock *pb;
+ pCode *pc;
if(!the_pFile)
return;
- fprintf(stderr," Analyzing pCode");
-
- /* First, merge the labels with the instructions */
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if('*' == dbName || getpBlock_dbName(pb) == dbName) {
-
- fprintf(stderr," analyze and merging block %c\n",dbName);
- pBlockMergeLabels(pb);
- AnalyzepBlock(pb);
- }
- }
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if('*' == dbName || getpBlock_dbName(pb) == dbName)
- OptimizepBlock(pb);
- }
-
/* Now build the call tree.
First we examine all of the pCodes for functions.
Keep in mind that the function boundaries coincide
*/
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if('*' == dbName || getpBlock_dbName(pb) == dbName) {
- pCode *pc_fstart=NULL;
- for(pc = pb->pcHead; pc; pc = pc->next) {
- if(pc->type == PC_FUNCTION) {
- if (PCF(pc)->fname) {
- // I'm not liking this....
- // Found the beginning of a function.
- _ALLOC(pbr,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(pc_fstart, pc);
-
- addSet(&pb->function_exits, pc);
- }
- } else if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
- addSet(&pb->function_calls,pc);
- }
+ 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);
}
}
}
}
+/*-----------------------------------------------------------------*/
+/* 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));
+
+ /* 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));
+ }
+ }
+
+ changes = OptimizepCode(dbName);
+
+ } while(changes && (i++ < MAX_PASSES));
+
+ buildCallTree();
+}
+
/*-----------------------------------------------------------------*/
/* ispCodeFunction - returns true if *pc is the pCode of a */
/* function */
for(r1=setFirstItem(regset); r1; r1=setNextItem(regset)) {
r2 = pic14_regWithIdx(r1->rIdx);
- r2->isFree = 0;
- r2->wasUsed = 1;
+ if (r2) {
+ r2->isFree = 0;
+ r2->wasUsed = 1;
+ }
}
}
pCode *pc;
regs *r;
- fprintf(of,"***\n pBlock Stats\n***\n");
+ 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\n");
+ fprintf(of,";entry: ");
pc->print(of,pc);
}
pc = setFirstItem(pb->function_exits);
if(pc) {
- fprintf(of,"has an exit\n");
- pc->print(of,pc);
+ fprintf(of,";has an exit\n");
+ //pc->print(of,pc);
}
pc = setFirstItem(pb->function_calls);
if(pc) {
- fprintf(of,"functions called\n");
+ fprintf(of,";functions called:\n");
while(pc) {
- pc->print(of,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->registers);
+ r = setFirstItem(pb->tregisters);
if(r) {
- int n = elementsInSet(pb->registers);
+ int n = elementsInSet(pb->tregisters);
- fprintf(of,"%d compiler assigned register%c:\n",n, ( (n!=1) ? 's' : ' '));
+ fprintf(of,";%d compiler assigned register%c:\n",n, ( (n!=1) ? 's' : ' '));
while (r) {
- fprintf(of," %s\n",r->name);
- r = setNextItem(pb->registers);
+ fprintf(of,"; %s\n",r->name);
+ r = setNextItem(pb->tregisters);
}
}
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
-void sequencepCode(void)
+#if 0
+static void sequencepCode(void)
{
pBlock *pb;
pCode *pc;
}
}
+#endif
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
+/*
set *register_usage(pBlock *pb)
{
pCode *pc,*pcn;
set *registers=NULL;
set *registersInCallPath = NULL;
- /* check recursion */
+ / * check recursion * /
pc = setFirstItem(pb->function_entries);
for( ; pc; pc = setNextItem(pb->function_calls)) {
if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
- char *dest = get_op(PCI(pc));
+ char *dest = get_op_from_instruction(PCI(pc));
pcn = findFunction(dest);
if(pcn)
}
-
+#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 */
+ / * 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;
- fprintf(stderr,"comparing registers\n");
+ DFPRINTF((stderr,"comparing registers\n"));
r1 = setFirstItem(registersInCallPath);
while(r1) {
-
- r2 = setFirstItem(pb->registers);
-
- while(r2) {
-
- if(r2->rIdx == r1->rIdx) {
- newreg = pic14_findFreeReg();
-
-
- if(!newreg) {
- fprintf(stderr,"Bummer, no more registers.\n");
- exit(1);
- }
-
- fprintf(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;
- }
- r2 = setNextItem(pb->registers);
+ if (r1->type != REG_STK) {
+ r2 = setFirstItem(pb->tregisters);
+
+ while(r2 && (r2->type != REG_STK)) {
+
+ if(r2->rIdx == r1->rIdx) {
+ newreg = pic14_findFreeReg(REG_GPR);
+
+
+ if(!newreg) {
+ DFPRINTF((stderr,"Bummer, no more registers.\n"));
+ exit(1);
+ }
+
+ DFPRINTF((stderr,"Cool found register collision nIdx=%d moving to %d\n",
+ r1->rIdx, newreg->rIdx));
+ r2->rIdx = newreg->rIdx;
+ if(newreg->name)
+ r2->name = Safe_strdup(newreg->name);
+ else
+ r2->name = NULL;
+ newreg->isFree = 0;
+ newreg->wasUsed = 1;
+ }
+ r2 = setNextItem(pb->tregisters);
+ }
}
r1 = setNextItem(registersInCallPath);
}
- /* Collisions have been resolved. Now free the registers in the call path */
+ / * Collisions have been resolved. Now free the registers in the call path * /
r1 = setFirstItem(registersInCallPath);
while(r1) {
- newreg = pic14_regWithIdx(r1->rIdx);
- newreg->isFree = 1;
+ newreg = pic14_regWithIdx(r1->rIdx);
+ if (newreg) newreg->isFree = 1;
r1 = setNextItem(registersInCallPath);
}
- } else
- MarkUsedRegisters(pb->registers);
-
- registers = unionSets(pb->registers, registersInCallPath, THROW_NONE);
+ }// else
+ // MarkUsedRegisters(pb->registers);
+ registers = unionSets(pb->tregisters, registersInCallPath, THROW_NONE);
+#ifdef PCODE_DEBUG
if(registers)
- fprintf(stderr,"returning regs\n");
+ DFPRINTF((stderr,"returning regs\n"));
else
- fprintf(stderr,"not returning regs\n");
+ DFPRINTF((stderr,"not returning regs\n"));
- fprintf(stderr,"pBlock after register optim.\n");
+ DFPRINTF((stderr,"pBlock after register optim.\n"));
pBlockStats(stderr,pb); // debug
-
+#endif
return registers;
}
+*/
/*-----------------------------------------------------------------*/
/* printCallTree - writes the call tree to a file */
// set *registersInCallPath = NULL;
if(!of)
- return;// registers;
+ return;
if(indent > 10)
- return; // registers; //recursion ?
+ return; //recursion ?
pc = setFirstItem(pb->function_entries);
for( ; pc; pc = setNextItem(pb->function_calls)) {
if(pc->type == PC_OPCODE && PCI(pc)->op == POC_CALL) {
- char *dest = get_op(PCI(pc));
+ char *dest = get_op_from_instruction(PCI(pc));
pcn = findFunction(dest);
if(pcn)
}
-#if 0
- fprintf(stderr,"pBlock before register optim.\n");
- pBlockStats(stderr,pb); // debug
-
- 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;
-
- fprintf(stderr,"comparing registers\n");
-
- r1 = setFirstItem(registersInCallPath);
- while(r1) {
-
- r2 = setFirstItem(pb->registers);
-
- while(r2) {
-
- if(r2->rIdx == r1->rIdx) {
- newreg = pic14_findFreeReg();
-
-
- if(!newreg) {
- fprintf(stderr,"Bummer, no more registers.\n");
- exit(1);
- }
-
- fprintf(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;
- }
- r2 = setNextItem(pb->registers);
- }
-
- r1 = setNextItem(registersInCallPath);
- }
-
- /* Collisions have been resolved. Now free the registers in the call path */
- r1 = setFirstItem(registersInCallPath);
- while(r1) {
- newreg = pic14_regWithIdx(r1->rIdx);
- newreg->isFree = 1;
- r1 = setNextItem(registersInCallPath);
- }
-
- } else
- MarkUsedRegisters(pb->registers);
-
- registers = unionSets(pb->registers, registersInCallPath, THROW_NONE);
-
- if(registers)
- fprintf(stderr,"returning regs\n");
- else
- fprintf(stderr,"not returning regs\n");
-
- fprintf(stderr,"pBlock after register optim.\n");
- pBlockStats(stderr,pb); // debug
-
-
- return registers;
-
-#endif
-
/*-----------------------------------------------------------------*/
/* printCallTree - writes the call tree to a file */
fprintf(of, "\npBlock statistics\n");
for(pb = the_pFile->pbHead; pb; pb = pb->next )
- pBlockStats(stderr,pb);
+ pBlockStats(of,pb);
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(PCI(pc)));
+ fprintf(of,"\t%s\n",get_op_from_instruction(PCI(pc)));
}
}
}
- /* Re-allocate the registers so that there are no collisions
- * between local variables when one function call another */
-
- pic14_deallocateAllRegs();
-
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- if(!pb->visited)
- register_usage(pb);
- }
-
fprintf(of,"\n**************\n\na better call tree\n");
for(pb = the_pFile->pbHead; pb; pb = pb->next) {
if(pb->visited)
fprintf(of,"block dbname: %c\n", getpBlock_dbName(pb));
}
}
+
+
+
+/*-----------------------------------------------------------------*/
+/* */
+/*-----------------------------------------------------------------*/
+
+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 *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__);
+
+ }
+
+}
+
+/*-----------------------------------------------------------------*/
+/* */
+/*-----------------------------------------------------------------*/
+
+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++;
+ }
+ } 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);
+
+}
projects / fw / sdcc / blobdiff