#define PIC_C_BIT 0
#define PIC_DC_BIT 1
#define PIC_Z_BIT 2
+#define PIC_RP0_BIT 5 /* Register Bank select bits RP1:0 : */
+#define PIC_RP1_BIT 6 /* 00 - bank 0, 01 - bank 1, 10 - bank 2, 11 - bank 3 */
+#define PIC_IRP_BIT 7 /* Indirect register page select */
+
+/***********************************************************************
+ * PIC INTCON bits - this will move into device dependent headers
+ ***********************************************************************/
+#define PIC_RBIF_BIT 0 /* Port B level has changed flag */
+#define PIC_INTF_BIT 1 /* Port B bit 0 interrupt on edge flag */
+#define PIC_T0IF_BIT 2 /* TMR0 has overflowed flag */
+#define PIC_RBIE_BIT 3 /* Port B level has changed - Interrupt Enable */
+#define PIC_INTE_BIT 4 /* Port B bit 0 interrupt on edge - Int Enable */
+#define PIC_T0IE_BIT 5 /* TMR0 overflow Interrupt Enable */
+#define PIC_PIE_BIT 6 /* Peripheral Interrupt Enable */
+#define PIC_GIE_BIT 7 /* Global Interrupt Enable */
/***********************************************************************
* Operand types
PO_STATUS, // The 'STATUS' register
PO_FSR, // The "file select register" (in 18c it's one of three)
PO_INDF, // The Indirect register
+ PO_INTCON, // Interrupt Control register
PO_GPR_REGISTER, // A general purpose register
PO_GPR_BIT, // A bit of a general purpose register
PO_GPR_TEMP, // A general purpose temporary register
} PIC_OPTYPE;
-/*************************************************
- * pCode conditions:
- *
- * The "conditions" are bit-mapped flags that describe
- * input and/or output conditions that are affected by
- * the instructions. For example:
- *
- * MOVF SOME_REG,W
- *
- * This instruction depends upon 'SOME_REG'. Consequently
- * it has the input condition PCC_REGISTER set to true.
- *
- * In addition, this instruction affects the Z bit in the
- * status register and affects W. Thus the output conditions
- * are the logical or:
- * PCC_ZERO_BIT | PCC_W
- *
- * The conditions are intialized when the pCode for an
- * instruction is created. They're subsequently used
- * by the pCode optimizer determine state information
- * in the program flow.
- *************************************************/
-
-#define PCC_NONE 0
-#define PCC_REGISTER (1<<0)
-#define PCC_C (1<<1)
-#define PCC_Z (1<<2)
-#define PCC_DC (1<<3)
-#define PCC_W (1<<4)
-#define PCC_EXAMINE_PCOP (1<<5)
-
/***********************************************************************
*
* PIC_OPCODE
POC_MOVFW,
POC_MOVLW,
POC_MOVWF,
- POC_NEGF,
+ POC_NOP,
POC_RETLW,
POC_RETURN,
+ POC_RETFIE,
POC_RLF,
POC_RLFW,
POC_RRF,
typedef enum
{
- PC_COMMENT=0, // pCode is a comment
- PC_OPCODE, // PORT dependent opcode
- PC_LABEL, // assembly label
- PC_FUNCTION, // Function start or end
- PC_WILD // wildcard - an opcode place holder
+ PC_COMMENT=0, /* pCode is a comment */
+ PC_OPCODE, /* PORT dependent opcode */
+ PC_LABEL, /* assembly label */
+ PC_FLOW, /* flow analysis */
+ PC_FUNCTION, /* Function start or end */
+ PC_WILD /* wildcard - an opcode place holder used
+ * in the pCode peep hole optimizer */
} PC_TYPE;
/************************************************/
char *name;
} pCodeOp;
-
+#if 0
typedef struct pCodeOpBit
{
pCodeOp pcop;
unsigned int inBitSpace: 1; /* True if in bit space, else
just a bit of a register */
} pCodeOpBit;
-
+#endif
typedef struct pCodeOpLit
{
pCodeOp pcop;
int lit;
} pCodeOpLit;
+typedef struct pCodeOpImmd
+{
+ pCodeOp pcop;
+ int offset;
+} pCodeOpImmd;
+
typedef struct pCodeOpLabel
{
pCodeOp pcop;
pCodeOp pcop; // Can be either GPR or SFR
int rIdx; // Index into the register table
struct regs *r;
+ int instance; // byte # of Multi-byte registers
struct pBlock *pb;
} pCodeOpReg;
pCodeOpReg pcor; // The Register containing this bit
int bit; // 0-7 bit number.
PIC_OPTYPE subtype; // The type of this register.
+ unsigned int inBitSpace: 1; /* True if in bit space, else
+ just a bit of a register */
} pCodeOpRegBit;
int seq; // sequence number
- pBranch *from; // pCodes that execute before this one
- pBranch *to; // pCodes that execute after
- pBranch *label; // pCode instructions that have labels
-
struct pBlock *pb; // The pBlock that contains this pCode.
/* "virtual functions"
* in C++. The subsequent structures that "inherit"
* the pCode structure will initialize these function
* pointers to something useful */
- void (*analyze) (struct pCode *_this);
+ // void (*analyze) (struct pCode *_this);
void (*destruct)(struct pCode *_this);
void (*print) (FILE *of,struct pCode *_this);
} pCodeComment;
+/*************************************************
+ pCodeFlow
+
+ The Flow object is used as marker to separate
+ the assembly code into contiguous chunks. In other
+ words, everytime an instruction cause or potentially
+ causes a branch, a Flow object will be inserted into
+ the pCode chain to mark the beginning of the next
+ contiguous chunk.
+**************************************************/
+
+typedef struct pCodeFlow
+{
+
+ pCode pc;
+
+ pCode *end; /* Last pCode in this flow. Note that
+ the first pCode is pc.next */
+
+ set **uses; /* map the pCode instruction inCond and outCond conditions
+ * in this array of set's. The reason we allocate an
+ * array of pointers instead of declaring each type of
+ * usage is because there are port dependent usage definitions */
+ int nuses; /* number of uses sets */
+
+ set *from; /* flow blocks that can send control to this flow block */
+ set *to; /* flow blocks to which this one can send control */
+
+ int inCond; /* Input conditions - stuff assumed defined at entry */
+ int outCond; /* Output conditions - stuff modified by flow block */
+
+} pCodeFlow;
+
/*************************************************
pCodeInstruction
char const * const mnemonic; // Pointer to mnemonic string
- pCodeOp *pcop; // Operand
+ pBranch *from; // pCodes that execute before this one
+ pBranch *to; // pCodes that execute after
+ pBranch *label; // pCode instructions that have labels
- unsigned int num_ops;
- unsigned int dest: 1; // If destination is W or F, then 1==F
- unsigned int bit_inst: 1;
+ pCodeOp *pcop; /* Operand, if this instruction has one */
+
+ pCodeFlow *pcflow; /* flow block to which this instruction belongs */
+
+ unsigned int num_ops; /* Number of operands (0,1,2 for mid range pics) */
+ unsigned int isModReg: 1; /* If destination is W or F, then 1==F */
+ unsigned int isBitInst: 1; /* e.g. BCF */
+ unsigned int isBranch: 1; /* True if this is a branching instruction */
+ unsigned int isSkip: 1; /* True if this is a skip instruction */
unsigned int inCond; // Input conditions for this instruction
unsigned int outCond; // Output conditions for this instruction
start and the name is contained
here */
+ pBranch *from; // pCodes that execute before this one
+ pBranch *to; // pCodes that execute after
+ pBranch *label; // pCode instructions that have labels
+
} pCodeFunction;
typedef struct pCodeWild
{
- pCode pc;
+ pCodeInstruction pci;
int id; /* Index into the wild card array of a peepBlock
* - this wild card will get expanded into that pCode
set *function_entries; /* dll of functions in this pblock */
set *function_exits;
set *function_calls;
- set *registers;
+ set *tregisters;
unsigned visited:1; /* set true if traversed in call tree */
#define PCI(x) ((pCodeInstruction *)(x))
#define PCL(x) ((pCodeLabel *)(x))
#define PCF(x) ((pCodeFunction *)(x))
+#define PCFL(x) ((pCodeFlow *)(x))
#define PCW(x) ((pCodeWild *)(x))
#define PCOP(x) ((pCodeOp *)(x))
-#define PCOB(x) ((pCodeOpBit *)(x))
+//#define PCOB(x) ((pCodeOpBit *)(x))
#define PCOL(x) ((pCodeOpLit *)(x))
+#define PCOI(x) ((pCodeOpImmd *)(x))
#define PCOLAB(x) ((pCodeOpLabel *)(x))
#define PCOR(x) ((pCodeOpReg *)(x))
#define PCORB(x) ((pCodeOpRegBit *)(x))
pCode *newpCode (PIC_OPCODE op, pCodeOp *pcop); // Create a new pCode given an operand
pCode *newpCodeCharP(char *cP); // Create a new pCode given a char *
pCode *newpCodeFunction(char *g, char *f); // Create a new function
-pCode *newpCodeLabel(int key); // Create a new label given a key
-pCode *newpCodeLabelStr(char *str); // Create a new label given a string
+pCode *newpCodeLabel(char *name,int key); // Create a new label given a key
pBlock *newpCodeChain(memmap *cm,char c, pCode *pc); // Create a new pBlock
void printpBlock(FILE *of, pBlock *pb); // Write a pBlock to a file
void printpCode(FILE *of, pCode *pc); // Write a pCode to a file
void OptimizepCode(char dbName);
void printCallTree(FILE *of);
void pCodePeepInit(void);
+void pBlockConvert2ISR(pBlock *pb);
-pCodeOp *newpCodeOpLabel(int key);
+pCodeOp *newpCodeOpLabel(char *name, int key);
+pCodeOp *newpCodeOpImmd(char *name, int offset);
pCodeOp *newpCodeOpLit(int lit);
pCodeOp *newpCodeOpBit(char *name, int bit,int inBitSpace);
+pCodeOp *newpCodeOpRegFromStr(char *name);
pCodeOp *newpCodeOp(char *name, PIC_OPTYPE p);
extern void pcode_test(void);
*-----------------------------------------------------------------*/
extern pCodeOpReg pc_status;
+extern pCodeOpReg pc_intcon;
extern pCodeOpReg pc_indf;
extern pCodeOpReg pc_fsr;
extern pCodeOpReg pc_pcl;
extern pCodeOpReg pc_pclath;
extern pCodeOpReg pc_kzero;
+extern pCodeOpReg pc_wsave; /* wsave and ssave are used to save W and the Status */
+extern pCodeOpReg pc_ssave; /* registers during an interrupt */
-//////////////////// DELETE THIS ///////////////////
-/*-----------------------------------------------------------------*/
-/* Allocation macros that replace those in SDCCalloc.h */
-/* Why? I dunno. I ran across a bug with those macros that */
-/* I couldn't fix, but I could work around... */
-/*-----------------------------------------------------------------*/
-# define GC_malloc(x) calloc((x), 1)
-
-#define _ALLOC(x,sz) if (!(x = calloc((sz),1) )) \
- { \
- werror(E_OUT_OF_MEM,__FILE__,(long) sz);\
- exit (1); \
- }
-
-#define _ALLOC_ATOMIC(x,y) if (!((x) = malloc(y))) \
- { \
- werror(E_OUT_OF_MEM,__FILE__,(long) y); \
- exit (1); \
- }
-
#endif // __PCODE_H__
projects / fw / sdcc / blobdiff