#include "common.h" // Include everything in the SDCC src directory
#include "newalloc.h"
-
-
+//#define PCODE_DEBUG
#include "pcode.h"
+#include "pcodeflow.h"
#include "ralloc.h"
+#if defined(__BORLANDC__) || defined(_MSC_VER)
+#define STRCASECMP stricmp
+#else
+#define STRCASECMP strcasecmp
+#endif
+
+pCodeOp *popCopyGPR2Bit(pCodeOpReg *pc, int bitval);
-pCodeOp *newpCodeOpWild(int id, pCodePeep *pcp, pCodeOp *subtype);
+
+pCodeOp *newpCodeOpWild(int id, pCodeWildBlock *pcwb, pCodeOp *subtype);
pCode *newpCodeWild(int pCodeID, pCodeOp *optional_operand, pCodeOp *optional_label);
pCode * findNextInstruction(pCode *pc);
-char *Safe_strdup(char *str);
+int getpCode(char *mnem,int dest);
+int getpCodePeepCommand(char *cmd);
+void pBlockMergeLabels(pBlock *pb);
+char *pCode2str(char *str, int size, pCode *pc);
+char *get_op( pCodeOp *pcop);
+
+extern pCodeInstruction *pic14Mnemonics[];
+
+#define IS_PCCOMMENT(x) ( x && (x->type==PC_COMMENT))
/****************************************************************/
/*
} pCodePeepSnippets;
+/****************************************************************/
+/* */
+/* peepSnippets - */
+/* */
+/****************************************************************/
+
static pCodePeepSnippets *peepSnippets=NULL;
+/****************************************************************/
+/* */
+/* curPeep */
+/* */
+/****************************************************************/
+
+//static pCodePeep *curPeep=NULL;
+
+/****************************************************************/
+/* */
+/* curBlock */
+/* */
+/****************************************************************/
+
+//static pBlock *curBlock=NULL;
+
+
+/****************************************************************/
+/* */
+/* max wild cards in a peep rule */
+/* */
+/****************************************************************/
+
+//static int sMaxWildVar = 0;
+//static int sMaxWildMnem = 0;
+
+
typedef struct pCodeToken
{
int tt; // token type;
typedef enum {
- PCT_SPACE,
+ PCT_NULL=0,
+ PCT_SPACE=1,
PCT_PERCENT,
+ PCT_LESSTHAN,
+ PCT_GREATERTHAN,
PCT_COLON,
PCT_COMMA,
PCT_COMMENT,
typedef enum {
- PCP_LABEL,
+ PCP_LABEL=1,
+ PCP_NUMBER,
PCP_STR,
PCP_WILDVAR,
PCP_WILDSTR,
- PCP_COMMA
+ PCP_COMMA,
+ PCP_COMMENT
} pCodePatterns;
static char pcpat_label[] = {PCT_PERCENT, PCT_NUMBER, PCT_COLON, 0};
+static char pcpat_number[] = {PCT_NUMBER, 0};
static char pcpat_string[] = {PCT_STRING, 0};
static char pcpat_wildString[] = {PCT_PERCENT, PCT_STRING, 0};
static char pcpat_wildVar[] = {PCT_PERCENT, PCT_NUMBER, 0};
static char pcpat_comma[] = {PCT_COMMA, 0};
+static char pcpat_comment[] = {PCT_COMMENT, 0};
typedef struct pcPattern {
- int pt; // Pattern type
+ char pt; // Pattern type
char *tokens; // list of tokens that describe the pattern
- void * (*f) (void *);
+ void * (*f) (void *,pCodeWildBlock *);
} pcPattern;
pcPattern pcpArr[] = {
{PCP_WILDSTR, pcpat_wildString, NULL},
{PCP_STR, pcpat_string, NULL},
{PCP_WILDVAR, pcpat_wildVar, NULL},
- {PCP_COMMA, pcpat_comma, NULL}
+ {PCP_COMMA, pcpat_comma, NULL},
+ {PCP_COMMENT, pcpat_comment, NULL},
+ {PCP_NUMBER, pcpat_number, NULL}
};
#define PCPATTERNS (sizeof(pcpArr)/sizeof(pcPattern))
// Assembly Line Token
typedef enum {
- ALT_LABEL,
+ ALT_LABEL=1,
+ ALT_COMMENT,
ALT_MNEM0,
+ ALT_MNEM0A,
ALT_MNEM1,
- ALT_MNEM2
+ ALT_MNEM1A,
+ ALT_MNEM1B,
+ ALT_MNEM2,
+ ALT_MNEM2A
} altPatterns;
+static char alt_comment[] = { PCP_COMMENT, 0};
static char alt_label[] = { PCP_LABEL, 0};
static char alt_mnem0[] = { PCP_STR, 0};
+static char alt_mnem0a[] = { PCP_WILDVAR, 0};
static char alt_mnem1[] = { PCP_STR, PCP_STR, 0};
+static char alt_mnem1a[] = { PCP_STR, PCP_WILDVAR, 0};
+static char alt_mnem1b[] = { PCP_STR, PCP_NUMBER, 0};
static char alt_mnem2[] = { PCP_STR, PCP_STR, PCP_COMMA, PCP_STR, 0};
-
-static void * cvt_altpat_label(void *pp);
+static char alt_mnem2a[] = { PCP_STR, PCP_WILDVAR, PCP_COMMA, PCP_STR, 0};
+
+static void * cvt_altpat_label(void *pp,pCodeWildBlock *pcwb);
+static void * cvt_altpat_comment(void *pp,pCodeWildBlock *pcwb);
+static void * cvt_altpat_mnem0(void *pp,pCodeWildBlock *pcwb);
+static void * cvt_altpat_mnem0a(void *pp,pCodeWildBlock *pcwb);
+static void * cvt_altpat_mnem1(void *pp,pCodeWildBlock *pcwb);
+static void * cvt_altpat_mnem1a(void *pp,pCodeWildBlock *pcwb);
+static void * cvt_altpat_mnem1b(void *pp,pCodeWildBlock *pcwb);
+static void * cvt_altpat_mnem2(void *pp,pCodeWildBlock *pcwb);
+static void * cvt_altpat_mnem2a(void *pp,pCodeWildBlock *pcwb);
pcPattern altArr[] = {
{ALT_LABEL, alt_label, cvt_altpat_label},
- {ALT_MNEM2, alt_mnem2, NULL},
+ {ALT_COMMENT, alt_comment,cvt_altpat_comment},
+ {ALT_MNEM2A, alt_mnem2a, cvt_altpat_mnem2a},
+ {ALT_MNEM2, alt_mnem2, cvt_altpat_mnem2},
+ {ALT_MNEM1B, alt_mnem1b, cvt_altpat_mnem1b},
+ {ALT_MNEM1A, alt_mnem1a, cvt_altpat_mnem1a},
+ {ALT_MNEM1, alt_mnem1, cvt_altpat_mnem1},
+ {ALT_MNEM0A, alt_mnem0a, cvt_altpat_mnem0a},
+ {ALT_MNEM0, alt_mnem0, cvt_altpat_mnem0},
};
+
+#define ALTPATTERNS (sizeof(altArr)/sizeof(pcPattern))
+
+// forward declarations
+static void * DLL_append(_DLL *list, _DLL *next);
+
/*-----------------------------------------------------------------*/
+/* cvt_extract_destination - helper function extracts the register */
+/* destination from a parsedPattern. */
+/* */
/*-----------------------------------------------------------------*/
-static void * cvt_altpat_label(void *pp)
+static int cvt_extract_destination(parsedPattern *pp)
{
- fprintf(stderr,"altpat_label\n");
- return NULL;
+
+ if(pp->pct[0].tt == PCT_STRING) {
+
+ // just check first letter for now
+
+ if(toupper(*pp->pct[0].tok.s) == 'F')
+ return 1;
+
+ } else if (pp->pct[0].tt == PCT_NUMBER) {
+
+ if(pp->pct[0].tok.n)
+ return 1;
+ }
+
+ return 0;
+
}
-#if 0
/*-----------------------------------------------------------------*/
+/* pCodeOp *cvt_extract_status(char *reg, char *bit) */
+/* if *reg is the "status" register and *bit is one of the */
+/* status bits, then this function will create a new pCode op */
+/* containing the status register. */
/*-----------------------------------------------------------------*/
-static pCode * cvt_pcpat_wildMnem(parsedPattern *pp)
+
+static pCodeOp *cvt_extract_status(char *reg, char *bit)
{
- fprintf(stderr,"pcpat_wildMnem\n");
+ int len;
+
+ if(STRCASECMP(reg, pc_status.pcop.name))
+ return NULL;
+
+ len = strlen(bit);
+
+ if(len == 1) {
+ // check C,Z
+ if(toupper(*bit) == 'C')
+ return PCOP(popCopyGPR2Bit(&pc_status,PIC_C_BIT));
+ if(toupper(*bit) == 'Z')
+ return PCOP(popCopyGPR2Bit(&pc_status,PIC_Z_BIT));
+ }
+
+ // Check DC
+ if(len ==2 && toupper(bit[0]) == 'D' && toupper(bit[1]) == 'C')
+ return PCOP(popCopyGPR2Bit(&pc_status,PIC_DC_BIT));
+
return NULL;
+
}
+
/*-----------------------------------------------------------------*/
+/* cvt_altpat_label - convert assembly line type to a pCode label */
+/* INPUT: pointer to the parsedPattern */
+/* */
+/* pp[0] - label */
+/* */
+/* label pattern => '%' number ':' */
+/* at this point, we wish to extract only the 'number' */
+/* */
/*-----------------------------------------------------------------*/
-static pCode * cvt_pcpat_Mnem(parsedPattern *pp)
+static void * cvt_altpat_label(void *pp,pCodeWildBlock *pcwb)
{
- fprintf(stderr,"pcpat_Mnem\n");
- return NULL;
+ parsedPattern *p = pp;
+
+ DFPRINTF((stderr,"altpat_label with ID = %d\n",p->pct[1].tok.n));
+ return newpCodeLabel(NULL,-p->pct[1].tok.n);
+
}
+
/*-----------------------------------------------------------------*/
+/* cvt_altpat_comment - convert assembly line type to a comment */
+/* INPUT: pointer to the parsedPattern */
+/* */
+/* pp[0] - comment */
+/* */
+/* */
/*-----------------------------------------------------------------*/
-static pCode * cvt_pcpat_wildVar(parsedPattern *pp)
+static void * cvt_altpat_comment(void *pp,pCodeWildBlock *pcwb)
{
- fprintf(stderr,"pcpat_wildVar\n");
- return NULL;
+ parsedPattern *p = pp;
+
+ DFPRINTF((stderr,"altpat_comment = %s\n",p->pct[0].tok.s));
+ return newpCodeCharP(p->pct[0].tok.s);
+
}
+
/*-----------------------------------------------------------------*/
+/* cvt_altpat_mem0 - convert assembly line type to a wild pCode */
+/* instruction */
+/* */
+/* pp[0] - str */
+/* */
/*-----------------------------------------------------------------*/
-static pCode * cvt_pcpat_var(parsedPattern *pp)
+static void * cvt_altpat_mnem0(void *pp,pCodeWildBlock *pcwb)
{
- fprintf(stderr,"pcpat_var\n");
- return NULL;
+ parsedPattern *p = pp;
+ int opcode;
+
+ pCodeInstruction *pci=NULL;
+
+ DFPRINTF((stderr,"altpat_mnem0 %s\n", p->pct[0].tok.s));
+
+ opcode = getpCode(p->pct[0].tok.s,0);
+
+ if(opcode < 0) {
+ /* look for special command strings like _NOTBITSKIP_ */
+
+ //fprintf(stderr, "Bad mnemonic\n");
+
+ opcode = getpCodePeepCommand(p->pct[0].tok.s);
+ //if(opcode > 0)
+ // fprintf(stderr," but valid peep command: %s, key = %d\n",p->pct[0].tok.s,opcode);
+ return NULL;
+ }
+
+ pci = PCI(newpCode(opcode, NULL));
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+
+ return pci;
}
-#endif
+/*-----------------------------------------------------------------*/
+/* cvt_altpat_mem0a - convert assembly line type to a wild pCode */
+/* instruction */
+/* */
+/* pp[0] - wild var */
+/* */
+/*-----------------------------------------------------------------*/
+static void * cvt_altpat_mnem0a(void *pp, pCodeWildBlock *pcwb)
+{
+ parsedPattern *p = pp;
+
+ DFPRINTF((stderr,"altpat_mnem0a wild mnem # %d\n", p[0].pct[1].tok.n));
+
+ /* Save the index of the maximum wildcard mnemonic */
+
+ //if(p[0].pct[1].tok.n > sMaxWildVar)
+ // sMaxWildMnem = p[0].pct[1].tok.n;
+
+ if(p[0].pct[1].tok.n > pcwb->nwildpCodes)
+ pcwb->nwildpCodes = p[0].pct[1].tok.n;
+
+ return newpCodeWild(p[0].pct[1].tok.n,NULL,NULL);
+
+}
+
+/*-----------------------------------------------------------------*/
+/* cvt_altpat_mem1 - convert assembly line type to a pCode */
+/* instruction with 1 operand. */
+/* */
+/* pp[0] - mnem */
+/* pp[1] - Operand */
+/* */
+/*-----------------------------------------------------------------*/
+static void * cvt_altpat_mnem1(void *pp,pCodeWildBlock *pcwb)
+{
+
+ parsedPattern *p = pp;
+ int opcode;
+
+ pCodeInstruction *pci=NULL;
+ pCodeOp *pcosubtype;
+
+ DFPRINTF((stderr,"altpat_mnem1 %s var %s\n", p->pct[0].tok.s,p[1].pct[0].tok.s));
+
+ opcode = getpCode(p->pct[0].tok.s,0);
+ if(opcode < 0) {
+ //fprintf(stderr, "Bad mnemonic\n");
+ opcode = getpCodePeepCommand(p->pct[0].tok.s);
+ //if(opcode > 0)
+ //fprintf(stderr," but valid peep command: %s, key = %d\n",p->pct[0].tok.s,opcode);
+ return NULL;
+ }
+
+ if(pic14Mnemonics[opcode]->isBitInst)
+ pcosubtype = newpCodeOp(p[1].pct[0].tok.s,PO_BIT);
+ else
+ pcosubtype = newpCodeOp(p[1].pct[0].tok.s,PO_GPR_REGISTER);
+
+
+ pci = PCI(newpCode(opcode, pcosubtype));
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+
+ return pci;
+}
+
+/*-----------------------------------------------------------------*/
+/* cvt_altpat_mem1a - convert assembly line type to a pCode */
+/* instruction with 1 wild operand. */
+/* */
+/* pp[0] - mnem */
+/* pp[1] - wild var */
+/* */
+/*-----------------------------------------------------------------*/
+static void * cvt_altpat_mnem1a(void *pp,pCodeWildBlock *pcwb)
+{
+ parsedPattern *p = pp;
+ int opcode;
+
+ pCodeInstruction *pci=NULL;
+ pCodeOp *pcosubtype;
+
+ DFPRINTF((stderr,"altpat_mnem1a %s var %d\n", p->pct[0].tok.s,p[1].pct[1].tok.n));
+
+ opcode = getpCode(p->pct[0].tok.s,0);
+ if(opcode < 0) {
+ int cmd_id = getpCodePeepCommand(p->pct[0].tok.s);
+ pCode *pc=NULL;
+
+ if(cmd_id<0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ if(p[0].pct[1].tok.n > pcwb->nwildpCodes)
+ pcwb->nwildpCodes = p[0].pct[1].tok.n;
+
+ pc = newpCodeWild(p[1].pct[1].tok.n,NULL,NULL);
+
+ switch(cmd_id) {
+ case NOTBITSKIP:
+ PCW(pc)->mustNotBeBitSkipInst = 1;
+ break;
+ case BITSKIP:
+ PCW(pc)->mustBeBitSkipInst = 1;
+ break;
+ case INVERTBITSKIP:
+ PCW(pc)->invertBitSkipInst = 1;
+ }
+ return pc;
+ }
+
+ if(pic14Mnemonics[opcode]->isBitInst)
+ pcosubtype = newpCodeOpBit(NULL,-1,0);
+ else
+ pcosubtype = newpCodeOp(NULL,PO_GPR_REGISTER);
+
+
+ pci = PCI(newpCode(opcode,
+ newpCodeOpWild(p[1].pct[1].tok.n, pcwb, pcosubtype)));
+
+ /* Save the index of the maximum wildcard variable */
+ //if(p[1].pct[1].tok.n > sMaxWildVar)
+ // sMaxWildVar = p[1].pct[1].tok.n;
+
+ if(p[1].pct[1].tok.n > pcwb->nvars)
+ pcwb->nvars = p[1].pct[1].tok.n;
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+ return pci;
+}
+
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
+static void * cvt_altpat_mnem1b(void *pp,pCodeWildBlock *pcwb)
+{
+ parsedPattern *p = pp;
+ int opcode;
+
+ pCodeInstruction *pci=NULL;
+
+ DFPRINTF((stderr,"altpat_mnem1b %s var %d\n", p->pct[0].tok.s,p[1].pct[0].tok.n));
+
+ opcode = getpCode(p->pct[0].tok.s,0);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ pci = PCI(newpCode(opcode, newpCodeOpLit(p[1].pct[0].tok.n) ));
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
-static void parseLineNode(char *ln)
+ return pci;
+}
+
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+static void * cvt_altpat_mnem2(void *pp,pCodeWildBlock *pcwb)
{
+ parsedPattern *p = pp;
+ int opcode;
+ int dest;
+
+ pCodeInstruction *pci=NULL;
+ pCodeOp *pcosubtype;
+
+ dest = cvt_extract_destination(&p[3]);
- tokIdx = 0;
+ DFPRINTF((stderr,"altpat_mnem2 %s var %s destination %s(%d)\n",
+ p->pct[0].tok.s,
+ p[1].pct[0].tok.s,
+ p[3].pct[0].tok.s,
+ dest));
+
+
+ opcode = getpCode(p->pct[0].tok.s,dest);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ if(pic14Mnemonics[opcode]->isBitInst) {
+ pcosubtype = cvt_extract_status(p[1].pct[0].tok.s, p[3].pct[0].tok.s);
+ if(pcosubtype == NULL) {
+ fprintf(stderr, "bad operand?\n");
+ return NULL;
+ }
+
+ } else
+ pcosubtype = newpCodeOp(p[1].pct[0].tok.s,PO_GPR_REGISTER);
+
+
+ pci = PCI(newpCode(opcode,pcosubtype));
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+ return pci;
+
+}
+
+/*-----------------------------------------------------------------*/
+/* cvt_altpat_mem2a - convert assembly line type to a pCode */
+/* instruction with 1 wild operand and a */
+/* destination operand (e.g. w or f) */
+/* */
+/* pp[0] - mnem */
+/* pp[1] - wild var */
+/* pp[2] - comma */
+/* pp[3] - destination */
+/* */
+/*-----------------------------------------------------------------*/
+static void * cvt_altpat_mnem2a(void *pp,pCodeWildBlock *pcwb)
+{
+ parsedPattern *p = pp;
+ int opcode;
+ int dest;
+
+ pCodeInstruction *pci=NULL;
+ pCodeOp *pcosubtype;
+
+ dest = cvt_extract_destination(&p[3]);
+
+ DFPRINTF((stderr,"altpat_mnem2a %s var %d destination %s(%d)\n",
+ p->pct[0].tok.s,
+ p[1].pct[1].tok.n,
+ p[3].pct[0].tok.s,
+ dest));
+
+
+ opcode = getpCode(p->pct[0].tok.s,dest);
+ if(opcode < 0) {
+ fprintf(stderr, "Bad mnemonic\n");
+ return NULL;
+ }
+
+ if(pic14Mnemonics[opcode]->isBitInst)
+ pcosubtype = newpCodeOp(NULL,PO_BIT);
+ else
+ pcosubtype = newpCodeOp(NULL,PO_GPR_REGISTER);
+
+
+ pci = PCI(newpCode(opcode,
+ newpCodeOpWild(p[1].pct[1].tok.n, pcwb, pcosubtype)));
+
+ /* Save the index of the maximum wildcard variable */
+ //if(p[1].pct[1].tok.n > sMaxWildVar)
+ // sMaxWildVar = p[1].pct[1].tok.n;
+
+ if(p[1].pct[1].tok.n > pcwb->nvars)
+ pcwb->nvars = p[1].pct[1].tok.n;
+
+ if(!pci)
+ fprintf(stderr,"couldn't find mnemonic\n");
+
+ return pci;
+
+}
+
+/*-----------------------------------------------------------------*/
+/* tokenizeLineNode - Convert a string (of char's) that was parsed */
+/* by SDCCpeeph.c into a string of tokens. */
+/* */
+/* */
+/* The tokenizer is of the classic type. When an item is encounterd*/
+/* it is converted into a token. The token is a structure that */
+/* encodes the item's type and it's value (when appropriate). */
+/* */
+/* Accepted token types: */
+/* SPACE NUMBER STRING % : , ; */
+/* */
+/* */
+/* */
+/*-----------------------------------------------------------------*/
+
+
+static void tokenizeLineNode(char *ln)
+{
+
+ tokIdx = 0; // Starting off at the beginning
+ tokArr[0].tt = PCT_NULL; // and assume invalid character for first token.
if(!ln || !*ln)
return;
while(*ln) {
if(isspace(*ln)) {
+ // add a SPACE token and eat the extra spaces.
tokArr[tokIdx++].tt = PCT_SPACE;
while (isspace (*ln))
ln++;
if(isdigit(*ln)) {
tokArr[tokIdx].tt = PCT_NUMBER;
- tokArr[tokIdx++].tok.n = strtol(ln, &ln, 10);
+ tokArr[tokIdx++].tok.n = strtol(ln, &ln, 0);
continue;
case '%':
tokArr[tokIdx++].tt = PCT_PERCENT;
break;
+ case '<':
+ tokArr[tokIdx++].tt = PCT_LESSTHAN;
+ break;
+ case '>':
+ tokArr[tokIdx++].tt = PCT_GREATERTHAN;
+ break;
case ':':
tokArr[tokIdx++].tt = PCT_COLON;
break;
case ';':
tokArr[tokIdx].tok.s = Safe_strdup(ln);
tokArr[tokIdx++].tt = PCT_COMMENT;
+ tokArr[tokIdx].tt = PCT_NULL;
return;
case ',':
tokArr[tokIdx++].tt = PCT_COMMA;
default:
- if(isalpha(*ln)) {
+ if(isalpha(*ln) || (*ln == '_') ) {
char buffer[50];
int i=0;
- while( (isalpha(*ln) || isdigit(*ln)) && i<49)
+ while( (isalpha(*ln) || isdigit(*ln) || (*ln == '_')) && i<49)
buffer[i++] = *ln++;
ln--;
buffer[i] = 0;
tokArr[tokIdx].tok.s = Safe_strdup(buffer);
- //fprintf(stderr," string %s",tokArr[tokIdx].tok.s);
-
tokArr[tokIdx++].tt = PCT_STRING;
}
}
+
+ /* Advance to next character in input string .
+ * Note, if none of the tests passed above, then
+ * we effectively ignore the `bad' character.
+ * Since the line has already been parsed by SDCCpeeph,
+ * chance are that there are no invalid characters... */
+
ln++;
+
}
+
+ tokArr[tokIdx].tt = 0;
}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+
void dump1Token(pCodeTokens tt)
{
-
+#ifdef PCODE_DEBUG
switch(tt) {
case PCT_SPACE:
fprintf(stderr, " space ");
break;
case PCT_PERCENT:
- fprintf(stderr, " pct ");
- fputc('%', stderr);
+ fprintf(stderr, " pct %%");
+ break;
+ case PCT_LESSTHAN:
+ fprintf(stderr, " pct <");
+ break;
+ case PCT_GREATERTHAN:
+ fprintf(stderr, " pct >");
break;
case PCT_COLON:
- fprintf(stderr, " col ");
- fputc(':',stderr);
+ fprintf(stderr, " col :");
break;
case PCT_COMMA:
- fprintf(stderr, " com ");
- fputc(',',stderr);
+ fprintf(stderr, " comma , ");
break;
case PCT_COMMENT:
+ fprintf(stderr, " comment ");
+ //fprintf(stderr,"%s",tokArr[i].tok.s);
+ break;
case PCT_STRING:
fprintf(stderr, " str ");
//fprintf(stderr,"%s",tokArr[i].tok.s);
case PCT_NUMBER:
fprintf(stderr, " num ");
//fprintf(stderr,"%d",tokArr[i].tok.n);
-
+ break;
+ case PCT_NULL:
+ fprintf(stderr, " null ");
}
+#endif
}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+
int pcComparePattern(pCodeToken *pct, char *pat, int max_tokens)
{
int i=0;
if(!pct || !pat || !*pat)
return 0;
- //fprintf(stderr,"comparing against:\n");
+ //DFPRINTF((stderr,"comparing against:\n"));
while(i < max_tokens) {
if(*pat == 0){
- //fprintf(stderr,"matched\n");
+ //DFPRINTF((stderr,"matched\n"));
return (i+1);
}
- //dump1Token(*pat); fprintf(stderr,"\n");
+ //dump1Token(*pat); DFPRINTF((stderr,"\n"));
if(pct->tt != *pat)
return 0;
}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+
+int altComparePattern( char *pct, parsedPattern *pat, int max_tokens)
+{
+ int i=0;
+
+ if(!pct || !pat || !*pct)
+ return 0;
+
+
+ while(i < max_tokens) {
+
+ if(*pct == 0) {
+ //DFPRINTF((stderr,"matched\n"));
+ return i;
+ }
+
+ //dump1Token(*pat); DFPRINTF((stderr,"\n"));
+
+ if( !pat || !pat->pcp )
+ return 0;
+
+ if (pat->pcp->pt != *pct)
+ return 0;
+
+ //DFPRINTF((stderr," pct=%d\n",*pct));
+ pct++;
+ pat++;
+ i++;
+ }
+
+ return 0;
+
+}
+/*-----------------------------------------------------------------*/
+/*-----------------------------------------------------------------*/
+
int advTokIdx(int *v, int amt)
{
- if(*v + amt > tokIdx)
+ if((unsigned) (*v + amt) > tokIdx)
return 1;
*v += amt;
}
-void dumpTokens(void)
+/*-----------------------------------------------------------------*/
+/* parseTokens - convert the tokens corresponding to a single line */
+/* of a peep hole assembly into a pCode object. */
+/* */
+/* */
+/* */
+/* */
+/* This is a simple parser that looks for strings of the type */
+/* allowed in the peep hole definition file. Essentially the format*/
+/* is the same as a line of assembly: */
+/* */
+/* label: mnemonic op1, op2, op3 ; comment */
+/* */
+/* Some of these items aren't present. It's the job of the parser */
+/* to determine which are and convert those into the appropriate */
+/* pcode. */
+/*-----------------------------------------------------------------*/
+
+void parseTokens(pCodeWildBlock *pcwb)
{
- int i;
+ unsigned i;
+ pCode *pc;
if(!tokIdx)
return;
for(i=0; i<=tokIdx; i++)
dump1Token(tokArr[i].tt);
-
-
+#ifdef PCODE_DEBUG
fputc('\n',stderr);
-
+#endif
{
int lparsedPatIdx=0;
int lpcpIdx;
int ltokIdx =0;
int matching = 0;
- int j;
+ int j=0;
+ int k=0;
+
+ char * cPmnem = NULL; // Pointer to non-wild mnemonic (if any)
+ char * cP1stop = NULL;
+ char * cP2ndop = NULL;
- pCodeOp *pcl = NULL; // Storage for a label
- pCodeOp *pco1 = NULL; // 1st operand
- pCodeOp *pco2 = NULL; // 2nd operand
- pCode *pc = NULL; // Mnemonic
+ //pCodeOp *pcl = NULL; // Storage for a label
+ //pCodeOp *pco1 = NULL; // 1st operand
+ //pCodeOp *pco2 = NULL; // 2nd operand
+ //pCode *pc = NULL; // Mnemonic
typedef enum {
PS_START,
lpcpIdx=0;
matching = 0;
- //fprintf(stderr,"ltokIdx = %d\n",ltokIdx);
- if( ((tokArr[ltokIdx].tt == PCT_SPACE) )//|| (tokArr[ltokIdx].tt == PCT_COMMA))
+ if( ((tokArr[ltokIdx].tt == PCT_SPACE) )
&& (advTokIdx(<okIdx, 1)) ) // eat space
break;
do {
j = pcComparePattern(&tokArr[ltokIdx], pcpArr[lpcpIdx].tokens, tokIdx +1);
if( j ) {
- //fprintf(stderr,"found token pattern match\n");
+
switch(pcpArr[lpcpIdx].pt) {
case PCP_LABEL:
if(state == PS_START){
- fprintf(stderr," label\n");
+ DFPRINTF((stderr," label\n"));
state = PS_HAVE_LABEL;
} else
- fprintf(stderr," bad state (%d) for label\n",state);
+ DFPRINTF((stderr," bad state (%d) for label\n",state));
break;
case PCP_STR:
+ DFPRINTF((stderr," %s is",tokArr[ltokIdx].tok.s));
switch(state) {
case PS_START:
case PS_HAVE_LABEL:
- fprintf(stderr," mnem\n");
+ DFPRINTF((stderr," mnem\n"));
+ cPmnem = tokArr[ltokIdx].tok.s;
state = PS_HAVE_MNEM;
break;
case PS_HAVE_MNEM:
- fprintf(stderr," 1st operand\n");
- pco1 = newpCodeOp(NULL,PO_GPR_REGISTER);
+ DFPRINTF((stderr," 1st operand\n"));
+ cP1stop = tokArr[ltokIdx].tok.s;
+ //pco1 = newpCodeOp(NULL,PO_GPR_REGISTER);
state = PS_HAVE_1OPERAND;
break;
case PS_HAVE_1OPERAND:
- fprintf(stderr," error expecting comma\n");
+ DFPRINTF((stderr," error expecting comma\n"));
break;
case PS_HAVE_COMMA:
- fprintf(stderr," 2 operands\n");
+ DFPRINTF((stderr," 2 operands\n"));
+ cP2ndop = tokArr[ltokIdx].tok.s;
+ break;
+ case PS_HAVE_2OPERANDS:
break;
}
break;
switch(state) {
case PS_START:
case PS_HAVE_LABEL:
- fprintf(stderr," wild mnem\n");
+ DFPRINTF((stderr," wild mnem\n"));
state = PS_HAVE_MNEM;
break;
case PS_HAVE_MNEM:
- fprintf(stderr," 1st operand is wild\n");
+ DFPRINTF((stderr," 1st operand is wild\n"));
+ state = PS_HAVE_1OPERAND;
+ break;
+ case PS_HAVE_1OPERAND:
+ DFPRINTF((stderr," error expecting comma\n"));
+ break;
+ case PS_HAVE_COMMA:
+ DFPRINTF((stderr," 2nd operand is wild\n"));
+ break;
+ case PS_HAVE_2OPERANDS:
+ break;
+ }
+ break;
+
+ case PCP_NUMBER:
+ switch(state) {
+ case PS_START:
+ case PS_HAVE_LABEL:
+ fprintf(stderr," ERROR number\n");
+ break;
+ case PS_HAVE_MNEM:
+ DFPRINTF((stderr," 1st operand is a number\n"));
state = PS_HAVE_1OPERAND;
break;
case PS_HAVE_1OPERAND:
fprintf(stderr," error expecting comma\n");
break;
case PS_HAVE_COMMA:
- fprintf(stderr," 2nd operand is wild\n");
+ DFPRINTF((stderr," 2nd operand is a number\n"));
+ break;
+ case PS_HAVE_2OPERANDS:
break;
}
break;
break;
case PCP_COMMA:
if(state == PS_HAVE_1OPERAND){
- fprintf(stderr," got a comma\n");
+ DFPRINTF((stderr," got a comma\n"));
state = PS_HAVE_COMMA;
} else
fprintf(stderr," unexpected comma\n");
//dump1Token(tokArr[ltokIdx].tt);
if(advTokIdx(<okIdx, strlen(pcpArr[lpcpIdx].tokens) ) ) {
- fprintf(stderr," reached end \n");
+ DFPRINTF((stderr," reached end \n"));
matching = 0;
//return;
}
} while (matching);
- fprintf(stderr,"\nConverting parsed line to pCode:\n\n");
+ parsedPatArr[lparsedPatIdx].pcp = NULL;
+ parsedPatArr[lparsedPatIdx].pct = NULL;
+
+ j=k=0;
+ do {
+ int c;
+
+ if( (c=altComparePattern( altArr[k].tokens, &parsedPatArr[j],10) ) ) {
+
+ if( altArr[k].f) {
+ pc = altArr[k].f(&parsedPatArr[j],pcwb);
+ //if(pc && pc->print)
+ // pc->print(stderr,pc);
+ //if(pc && pc->destruct) pc->destruct(pc); dumps core?
+
+ //if(curBlock && pc)
+ //addpCode2pBlock(curBlock, pc);
+ addpCode2pBlock(pcwb->pb, pc);
+ }
+ j += c;
+ }
+ k++;
+ }
+ while(j<=lparsedPatIdx && k<ALTPATTERNS);
+
+/*
+ DFPRINTF((stderr,"\nConverting parsed line to pCode:\n\n"));
j = 0;
do {
if(parsedPatArr[j].pcp && parsedPatArr[j].pcp->f )
parsedPatArr[j].pcp->f(&parsedPatArr[j]);
+ DFPRINTF((stderr," %d",parsedPatArr[j].pcp->pt));
j++;
}
while(j<lparsedPatIdx);
+*/
+ DFPRINTF((stderr,"\n"));
- fprintf(stderr,"\n");
-
- }
- return;
- /*now decode */
-#if 0
- i=0;
-
- if(pcComparePattern(&tokArr[0], pcpat_label, tokIdx +1)) {
- fprintf(stderr,"has a wild label\n");
- if(advTokIdx(&i, sizeof(pcpat_label) -1))
- return;
}
- if( (tokArr[i].tt == PCT_SPACE) && (advTokIdx(&i, 1)) ) // eat space
- return;
-
- if(pcComparePattern(&tokArr[i], pcpat_wildMnem, tokIdx +1 -i)) {
- fprintf(stderr,"has a wild mnemonic\n");
- if(advTokIdx(&i, sizeof(pcpat_wildMnem) -1))
- return;
- } else if(pcComparePattern(&tokArr[i], pcpat_Mnem, tokIdx +1 -i)) {
- fprintf(stderr,"has a mnemonic\n");
- if(advTokIdx(&i, sizeof(pcpat_Mnem) -1))
- return;
- } else
- return; // doesn't matter what follows
-
- if( (tokArr[i].tt == PCT_SPACE) && (advTokIdx(&i, 1)) ) // eat space
- return;
-
- fprintf(stderr,"checking variable; next token ");
- dump1Token(tokArr[i].tt);
- fprintf(stderr,"\n");
-
- if(pcComparePattern(&tokArr[i], pcpat_wildVar, tokIdx +1 -i)) {
- fprintf(stderr,"has a wild var\n");
- if(advTokIdx(&i, sizeof(pcpat_wildVar) -1))
- return;
- } else if(pcComparePattern(&tokArr[i], pcpat_Var, tokIdx +1 -i)) {
- fprintf(stderr,"has a var\n");
- if(advTokIdx(&i, sizeof(pcpat_Var) -1))
- return;
- } else
- return;
-
- if( ((tokArr[i].tt == PCT_SPACE) || (tokArr[i].tt == PCT_COMMA))
- && (advTokIdx(&i, 1)) ) // eat space
- return;
-
- if(pcComparePattern(&tokArr[i], pcpat_wildVar, tokIdx +10 -i)) {
- fprintf(stderr,"has a wild var\n");
- if(advTokIdx(&i, sizeof(pcpat_wildVar) -1))
- return;
- } else if(pcComparePattern(&tokArr[i], pcpat_Var, tokIdx +10 -i)) {
- fprintf(stderr,"has a var\n");
- if(advTokIdx(&i, sizeof(pcpat_Var) -1))
- return;
- } else if(tokArr[i].tt == PCT_NUMBER) {
- fprintf(stderr,"has a number\n");
- if (advTokIdx(&i, 1))
- return;
- } else
- return;
-#endif
}
-void peepRules2pCode(peepRule *rules)
+/*-----------------------------------------------------------------*/
+/* */
+/*-----------------------------------------------------------------*/
+void peepRuleBlock2pCodeBlock( lineNode *ln, pCodeWildBlock *pcwb)
{
- peepRule *pr;
- lineNode *ln;
- for (pr = rules; pr; pr = pr->next) {
- fprintf(stderr,"\nRule:\n\n");
- for(ln = pr->match; ln; ln = ln->next) {
- fprintf(stderr,"%s\n",ln->line);
- //parseLineNode(ln->line);
- parseLineNode(ln->line);
- dumpTokens();
+ if(!ln)
+ return;
- }
+ for( ; ln; ln = ln->next) {
- fprintf(stderr,"\nReplaced by:\n");
- for(ln = pr->replace; ln; ln = ln->next)
- fprintf(stderr,"%s\n",ln->line);
+ //DFPRINTF((stderr,"%s\n",ln->line));
- if(pr->cond)
- fprintf(stderr,"\nCondition: %s\n",pr->cond);
+ tokenizeLineNode(ln->line);
+ parseTokens(pcwb);
}
-
-}
-
-void printpCodeString(FILE *of, pCode *pc, int max)
-{
- int i=0;
-
- while(pc && (i++<max)) {
- pc->print(of,pc);
- pc = pc->next;
- }
}
/*-----------------------------------------------------------------*/
-/* _DLL * DLL_append */
-/* */
-/* Append a _DLL object to the end of a _DLL (doubly linked list) */
-/* If The list to which we want to append is non-existant then one */
-/* is created. Other wise, the end of the list is sought out and */
-/* a new DLL object is appended to it. In either case, the void */
-/* *data is added to the newly created DLL object. */
+/* peepRuleCondition */
/*-----------------------------------------------------------------*/
-
-static void * DLL_append(_DLL *list, _DLL *next)
+static void peepRuleCondition(char *cond, pCodePeep *pcp)
{
- _DLL *b;
+ if(!cond || !pcp)
+ return;
+ //DFPRINTF((stderr,"\nCondition: %s\n",cond));
+ /* brute force compares for now */
- /* If there's no list, then create one: */
- if(!list) {
- next->next = next->prev = NULL;
- return next;
- }
+ if(STRCASECMP(cond, "NZ") == 0) {
+ //DFPRINTF((stderr,"found NZ\n"));
+ pcp->postFalseCond = PCC_Z;
+ }
- /* Search for the end of the list. */
- b = list;
- while(b->next)
- b = b->next;
+}
- /* Now append the new DLL object */
- b->next = next;
- b->next->prev = b;
- b = b->next;
- b->next = NULL;
- return list;
+void initpCodeWildBlock(pCodeWildBlock *pcwb)
+{
-}
-
-
-/*-----------------------------------------------------------------
-
- pCode peephole optimization
-
+ // pcwb = Safe_calloc(1,sizeof(pCodeWildBlock));
- The pCode "peep hole" optimization is not too unlike the peep hole
- optimization in SDCCpeeph.c. The major difference is that here we
- use pCode's whereas there we use ASCII strings. The advantage with
- pCode's is that we can ascertain flow information in the instructions
- being optimized.
-
-
-<FIX ME> - elaborate...
-
- -----------------------------------------------------------------*/
-
-#if 0
-/*-----------------------------------------------------------------*/
-/* pCodePeep */
-/*-----------------------------------------------------------------*/
-int pCodePeepCompare(pCode *pc, pCodePeep *pcp)
-{
- pCode *pcfrom,*pcto;
+ if(!pcwb)
+ return;
- pcfrom = pc;
- for( pcto=pcp->target; pcto; pcto=pcto->next) {
+ pcwb->vars = NULL;
+ pcwb->wildpCodes = NULL;
+ pcwb->wildpCodeOps = NULL;
- pcfrom = findNextInstruction(pcfrom);
+ pcwb->nvars = 0;
+ pcwb->nwildpCodes = 0;
+ pcwb->nops = 0;
- if( pcfrom &&
- (PCI(pcfrom)->op == PCI(pcto)->op ||
- PCI(pcto)->op == POC_WILD))
- continue;
- return 0;
- }
- return 0;
}
-/*-----------------------------------------------------------------*/
-/* pCodePeep */
-/*-----------------------------------------------------------------*/
-void pCodePeepSearch(pCodePeep *snippet)
+void postinit_pCodeWildBlock(pCodeWildBlock *pcwb)
{
- pBlock *pb;
- pCode *pc;
-
- if(!the_pFile)
+
+ if(!pcwb)
return;
- /* compare the chain to the pCode that we've
- got so far. If a match is found, then replace
- the pCode chain.
- */
- for(pb = the_pFile->pbHead; pb; pb = pb->next) {
- for(pc = pb->pcHead; pc; pc = pc->next) {
- pCodePeepCompare(pc,snippet);
- }
- }
-
-}
-#endif
-
-#if 0
-pBlock *pBlockAppend(pBlock *pb1, pBlock *pb2)
-{
- pBlock *pb;
+ pcwb->nvars+=2;
+ pcwb->nops = pcwb->nvars;
- if(!pb1->tail)
- return pb2;
+ pcwb->vars = Safe_calloc(pcwb->nvars, sizeof(char *));
+ pcwb->wildpCodeOps = Safe_calloc(pcwb->nvars, sizeof(pCodeOp *));
- pb = pb1->tail;
-
- pb2->head = pb1;
- pb2->tail = NULL;
- pb1->tail = pb2;
+ pcwb->nwildpCodes+=2;
+ pcwb->wildpCodes = Safe_calloc(pcwb->nwildpCodes, sizeof(pCode *));
}
-#endif
+void initpCodePeep(pCodePeep *pcp)
+{
+
+ // pcwb = Safe_calloc(1,sizeof(pCodeWildBlock));
+
+ if(!pcp)
+ return;
-void pCodePeepInit(void)
-{
- pBlock *pb;
- // pCode *pc;
- pCodePeep *pcp;
- pCodePeepSnippets *pcps;
+ initpCodeWildBlock(&pcp->target);
+ pcp->target.pb = newpCodeChain(NULL, 'W', NULL);
- /* Declare a peep code snippet */
- /* <FIXME> do I really need a separate struct just to DLL the snippets? */
- /* e.g. I could put the DLL into the pCodePeep structure */
- pcps = Safe_calloc(1,sizeof(pCodePeepSnippets));
- pcp = pcps->peep = Safe_calloc(1,sizeof(pCodePeep));
- peepSnippets = DLL_append((_DLL*)peepSnippets,(_DLL*)pcps);
+ initpCodeWildBlock(&pcp->replace);
+ pcp->replace.pb = newpCodeChain(NULL, 'W', NULL);
+}
- pb = newpCodeChain(NULL, 'W', newpCode(POC_MOVWF, newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER))) );
- addpCode2pBlock( pb, newpCode(POC_MOVFW, newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER))) );
+/*-----------------------------------------------------------------*/
+/* peepRules2pCode - parse the "parsed" peep hole rules to generate*/
+/* pCode. */
+/* */
+/* SDCCpeeph parses the peep rules file and extracts variables, */
+/* removes white space, and checks the syntax. This function */
+/* extends that processing to produce pCode objects. You can kind */
+/* think of this function as an "assembler", though instead of */
+/* taking raw text to produce machine code, it produces pCode. */
+/* */
+/*-----------------------------------------------------------------*/
+extern void pic14initpCodePeepCommands(void);
- pcp->target = pb;
+void peepRules2pCode(peepRule *rules)
+{
+ peepRule *pr;
- pcp->replace = newpCodeChain(NULL, 'W',newpCode(POC_MOVWF, newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER))) );
+ pCodePeep *currentRule;
+ pCodePeepSnippets *pcps;
- /* Allocate space to store pointers to the wildcard variables */
- pcp->nvars = 1;
- pcp->vars = Safe_calloc(pcp->nvars, sizeof(char *));
- pcp->nwildpCodes = 0;
- pcp->wildpCodes = NULL;
+ pic14initpCodePeepCommands();
- pcp->postFalseCond = PCC_Z;
- pcp->postTrueCond = PCC_NONE;
+ /* The rules are in a linked-list. Each rule has two portions */
+ /* There's the `target' and there's the `replace'. The target */
+ /* is compared against the SDCC generated code and if it */
+ /* matches, it gets replaced by the `replace' block of code. */
+ /* */
+ /* Here we loop through each rule and convert the target's and*/
+ /* replace's into pCode target and replace blocks */
- fprintf(stderr,"Peep rule\nTarget:\n");
- printpCodeString(stderr,pcp->target->pcHead, 10);
- fprintf(stderr,"Replaced with:\n");
- printpCodeString(stderr,pcp->replace->pcHead, 10);
+ for (pr = rules; pr; pr = pr->next) {
- /* Now for another peep example */
- pcps = Safe_calloc(1,sizeof(pCodePeepSnippets));
- pcp = pcps->peep = Safe_calloc(1,sizeof(pCodePeep));
- peepSnippets = DLL_append((_DLL*)peepSnippets,(_DLL*)pcps);
+ //DFPRINTF((stderr,"\nRule:\n\n"));
- {
- /*
- target:
+ pcps = Safe_calloc(1,sizeof(pCodePeepSnippets));
+ peepSnippets = DLL_append((_DLL*)peepSnippets,(_DLL*)pcps);
- btfsc %0
- goto %1
- %3
- %1: %4
+ currentRule = pcps->peep = Safe_calloc(1,sizeof(pCodePeep));
+ initpCodePeep(currentRule);
- replace:
- btfss %0
- %1: %4
- %3
+ /* Convert the target block */
+ peepRuleBlock2pCodeBlock(pr->match, ¤tRule->target);
- The %3 and %4 are wild opcodes. Since the opcodes
- are stored in a different array than the wild operands,
- they can have the same indices and not conflict. So
- below, the %3 is really a %0, %4 is a %1.
+ //DFPRINTF((stderr,"finished target, here it is in pcode form:\n"));
+ //printpBlock(stderr, curBlock);
- */
- pCodeOp *pcl;
- pCodeOp *pcw;
- pCodeOp *pcwb;
+ //DFPRINTF((stderr,"target with labels merged:\n"));
+ //pBlockMergeLabels(curBlock);
+ pBlockMergeLabels(currentRule->target.pb);
+ //printpBlock(stderr, currentRule->replace.pb);
- // Create a new wild operand subtyped as a bit
- pcwb = newpCodeOpWild(0,pcp,newpCodeOpBit(NULL,-1));
+ //#ifdef PCODE_DEBUG
+ // printpBlock(stderr, curBlock);
+ //#endif
+ //DFPRINTF((stderr,"\nReplaced by:\n"));
- // Create a
- pb = newpCodeChain(NULL, 'W',newpCode(POC_BTFSC,pcwb));
- pcl = newpCodeOpLabel(-1);
- pcw = newpCodeOpWild(1, pcp, pcl);
- addpCode2pBlock( pb, newpCode(POC_GOTO, pcw));
- addpCode2pBlock( pb, newpCodeWild(0,NULL,NULL));
- addpCode2pBlock( pb, newpCodeWild(1,NULL,pcw));
+ /* Convert the replace block */
+ peepRuleBlock2pCodeBlock(pr->replace, ¤tRule->replace);
+ //DFPRINTF((stderr,"finished replace block, here it is in pcode form:\n"));
+ //printpBlock(stderr, curBlock);
- pcp->target = pb;
+ //DFPRINTF((stderr,"replace with labels merged:\n"));
- pb = newpCodeChain(NULL, 'W',newpCode(POC_BTFSS, pcwb));
- addpCode2pBlock( pb, newpCodeWild(0,NULL,NULL));
- addpCode2pBlock( pb, newpCodeWild(1,NULL,pcw));
+ pBlockMergeLabels(currentRule->replace.pb);
+ //printpBlock(stderr, currentRule->replace.pb);
- pcp->replace = pb;
+ peepRuleCondition(pr->cond,currentRule);
- /* Allocate space to store pointers to the wildcard variables */
- pcp->nvars = 2;
- pcp->vars = Safe_calloc(pcp->nvars, sizeof(char *));
- pcp->nwildpCodes = 2;
- pcp->wildpCodes = Safe_calloc(pcp->nwildpCodes, sizeof(pCode *));
+ /* The rule has been converted to pCode. Now allocate
+ * space for the wildcards */
+
+ postinit_pCodeWildBlock(¤tRule->target);
+ postinit_pCodeWildBlock(¤tRule->replace);
- pcp->postFalseCond = PCC_NONE;
- pcp->postTrueCond = PCC_NONE;
+ //return; // debug ... don't want to go through all the rules yet
}
+ {
+ pCodePeep *peepBlock;
+ _DLL *peeprules;
+
+ peeprules = (_DLL *)peepSnippets;
+ //fprintf(stderr,"target rules\n");
+ while(peeprules) {
+ //fprintf(stderr," rule:\n");
+ peepBlock = ((pCodePeepSnippets*)peeprules)->peep;
+ //printpBlock(stderr, peepBlock->target.pb);
+ peeprules = peeprules->next;
+ }
+ //fprintf(stderr," ... done\n");
+ }
+}
+void printpCodeString(FILE *of, pCode *pc, int max)
+{
+ int i=0;
+ while(pc && (i++<max)) {
+ pc->print(of,pc);
+ pc = pc->next;
+ }
+}
+/*-----------------------------------------------------------------*/
+/* _DLL * DLL_append */
+/* */
+/* Append a _DLL object to the end of a _DLL (doubly linked list) */
+/* If The list to which we want to append is non-existant then one */
+/* is created. Other wise, the end of the list is sought out and */
+/* a new DLL object is appended to it. In either case, the void */
+/* *data is added to the newly created DLL object. */
+/*-----------------------------------------------------------------*/
+static void * DLL_append(_DLL *list, _DLL *next)
+{
+ _DLL *b;
+ /* If there's no list, then create one: */
+ if(!list) {
+ next->next = next->prev = NULL;
+ return next;
+ }
- //-------------
-
- /* Now for another peep example */
- pcps = Safe_calloc(1,sizeof(pCodePeepSnippets));
- pcp = pcps->peep = Safe_calloc(1,sizeof(pCodePeep));
- peepSnippets = DLL_append((_DLL*)peepSnippets,(_DLL*)pcps);
+ /* Search for the end of the list. */
+ b = list;
+ while(b->next)
+ b = b->next;
- {
- pCodeOp *pcw;
+ /* Now append the new DLL object */
+ b->next = next;
+ b->next->prev = b;
+ b = b->next;
+ b->next = NULL;
- pcw = newpCodeOpWild(0,pcp,newpCodeOp(NULL,PO_GPR_REGISTER));
+ return list;
+
+}
- pb = newpCodeChain(NULL, 'W', newpCode(POC_MOVWF, pcw));
- addpCode2pBlock( pb, newpCode(POC_MOVWF, pcw));
- pcp->target = pb;
+/*-----------------------------------------------------------------
- pb = newpCodeChain(NULL, 'W',newpCode(POC_MOVWF, pcw));
+ pCode peephole optimization
- pcp->replace = pb;
- /* Allocate space to store pointers to the wildcard variables */
- pcp->nvars = 1;
- pcp->vars = Safe_calloc(pcp->nvars, sizeof(char *));
- pcp->nwildpCodes = 0;
- pcp->wildpCodes = NULL;
+ The pCode "peep hole" optimization is not too unlike the peep hole
+ optimization in SDCCpeeph.c. The major difference is that here we
+ use pCode's whereas there we use ASCII strings. The advantage with
+ pCode's is that we can ascertain flow information in the instructions
+ being optimized.
- pcp->postFalseCond = PCC_NONE;
- pcp->postTrueCond = PCC_NONE;
- }
+<FIX ME> - elaborate...
+ -----------------------------------------------------------------*/
-}
/*-----------------------------------------------------------------*/
/* pCodeSearchCondition - Search a pCode chain for a 'condition' */
return 0;
}
+
+/*-----------------------------------------------------------------
+ * int pCodeOpCompare(pCodeOp *pcops, pCodeOp *pcopd)
+ *
+ * Compare two pCodeOp's and return 1 if they're the same
+ *-----------------------------------------------------------------*/
+int pCodeOpCompare(pCodeOp *pcops, pCodeOp *pcopd)
+{
+
+ if(!pcops || !pcopd)
+ return 0;
+ /*
+ fprintf(stderr," Comparing operands %s",
+ get_op( pcops));
+
+ fprintf(stderr," to %s\n",
+ get_op( pcopd));
+ */
+
+ if(pcops->type != pcopd->type) {
+ //fprintf(stderr," - fail - diff types\n");
+ return 0; // different types
+ }
+
+ if(!pcops->name || !pcopd->name || strcmp(pcops->name,pcopd->name)) {
+ //fprintf(stderr," - fail - diff names\n");
+ return 0; // different names
+ }
+
+ switch(pcops->type) {
+ case PO_DIR:
+ if( PCOR(pcops)->instance != PCOR(pcopd)->instance) {
+ //fprintf(stderr, " - fail different instances\n");
+ return 0;
+ }
+ break;
+ default:
+ break;
+ }
+
+ //fprintf(stderr," - pass\n");
+
+ return 1;
+}
+
+int pCodePeepMatchLabels(pCodePeep *peepBlock, pCode *pcs, pCode *pcd)
+{
+ int labindex;
+
+ /* Check for a label associated with this wild pCode */
+ // If the wild card has a label, make sure the source code does too.
+ if(PCI(pcd)->label) {
+ pCode *pcl = PCI(pcd)->label->pc;
+
+#ifdef PCODE_DEBUG
+ int li = -PCL(pcl)->key;
+
+ if(peepBlock->target.vars[li] == NULL) {
+ if(PCI(pcs)->label) {
+ DFPRINTF((stderr,"first time for a label: %d %s\n",li,PCL(PCI(pcs)->label->pc)->label));
+ }
+ } else {
+ // DFPRINTF((stderr,"label id = %d \n",PCL(PCI(pcd)->label->pc)->key));
+ DFPRINTF((stderr," label id: %d %s\n",li,peepBlock->target.vars[li]));
+ if(PCI(pcs)->label) {
+ DFPRINTF((stderr," src %s\n",PCL(PCI(pcs)->label->pc)->label));
+ }
+ }
+#endif
+
+
+ if(!PCI(pcs)->label)
+ return 0;
+
+ labindex = -PCL(pcl)->key;
+ if(peepBlock->target.vars[labindex] == NULL) {
+ // First time to encounter this label
+ peepBlock->target.vars[labindex] = PCL(PCI(pcs)->label->pc)->label;
+ DFPRINTF((stderr,"first time for a label: %d %s\n",labindex,PCL(PCI(pcs)->label->pc)->label));
+
+ } else {
+ if(strcmp(peepBlock->target.vars[labindex],PCL(PCI(pcs)->label->pc)->label) != 0) {
+ DFPRINTF((stderr,"labels don't match dest %s != src %s\n",peepBlock->target.vars[labindex],PCL(PCI(pcs)->label->pc)->label));
+ return 0;
+ }
+ DFPRINTF((stderr,"matched a label %d %s -hey\n",labindex,peepBlock->target.vars[labindex]));
+ }
+ } else {
+ //DFPRINTF((stderr,"destination doesn't have a label\n"));
+
+ if(PCI(pcs)->label)
+ return 0;
+
+ //DFPRINTF((stderr,"neither src nor dest have labels\n"));
+
+ }
+
+ return 1;
+
+}
+
/*-----------------------------------------------------------------*/
/* pCodePeepMatchLine - Compare source and destination pCodes to */
/* see they're the same. */
+/* */
+/* In this context, "source" refers to the coded generated by gen.c*/
+/* and "destination" refers to a pcode in a peep rule. If the dest-*/
+/* ination has no wild cards, then MatchLine will compare the two */
+/* pcodes (src and dest) for a one-to-one match. If the destination*/
+/* has wildcards, then those get expanded. When a wild card is */
+/* encountered for the first time it autmatically is considered a */
+/* match and the object that matches it is referenced in the */
+/* variables or opcodes array (depending on the type of match). */
+/* */
+/* */
+/* Inputs: */
+/* *peepBlock - A pointer to the peepBlock that contains the */
+/* entire rule to which the destination pcode belongs*/
+/* *pcs - a pointer to the source pcode */
+/* *pcd - a pointer to the destination pcode */
+/* */
+/* Returns: */
+/* 1 - pcodes match */
+/* 0 - pcodes don't match */
+/* */
+/* */
/*-----------------------------------------------------------------*/
+
int pCodePeepMatchLine(pCodePeep *peepBlock, pCode *pcs, pCode *pcd)
{
int index; // index into wild card arrays
+ /* one-for-one match. Here the source and destination opcodes
+ * are not wild. However, there may be a label or a wild operand */
+
+ if(pcs) {
+ if(PCI(pcs)->label) {
+ DFPRINTF((stderr,"Match line source label: %s\n",PCL(PCI(pcs)->label->pc)->label));
+ }
+ }
+
if(pcs->type == pcd->type) {
if(pcs->type == PC_OPCODE) {
if(PCI(pcs)->op != PCI(pcd)->op)
return 0;
- fprintf(stderr,"%s comparing\n",__FUNCTION__);
+#ifdef PCODE_DEBUG
+ DFPRINTF((stderr,"%s comparing\n",__FUNCTION__));
pcs->print(stderr,pcs);
pcd->print(stderr,pcd);
+#endif
+
+ if(!pCodePeepMatchLabels(peepBlock, pcs, pcd))
+ return 0;
/* Compare the operands */
if(PCI(pcd)->pcop) {
if (PCI(pcd)->pcop->type == PO_WILD) {
index = PCOW(PCI(pcd)->pcop)->id;
- fprintf(stderr,"destination is wild\n");
+ //DFPRINTF((stderr,"destination is wild\n"));
#ifdef DEBUG_PCODEPEEP
- if (index > peepBlock->nvars) {
- fprintf(stderr,"%s - variables exceeded\n",__FUNCTION__);
+ if (index > peepBlock->nops) {
+ DFPRINTF((stderr,"%s - variables exceeded\n",__FUNCTION__));
exit(1);
}
#endif
+
PCOW(PCI(pcd)->pcop)->matched = PCI(pcs)->pcop;
+ if(!peepBlock->target.wildpCodeOps[index]) {
+ peepBlock->target.wildpCodeOps[index] = PCI(pcs)->pcop;
+
+ //if(PCI(pcs)->pcop->type == PO_GPR_TEMP)
+
+ } else {
+ /*
+ pcs->print(stderr,pcs);
+ pcd->print(stderr,pcd);
+
+ fprintf(stderr, "comparing operands of these instructions, result %d\n",
+ pCodeOpCompare(PCI(pcs)->pcop, peepBlock->target.wildpCodeOps[index])
+ );
+ */
+
+ return pCodeOpCompare(PCI(pcs)->pcop, peepBlock->target.wildpCodeOps[index]);
+ }
+
{
char *n;
- if(PCI(pcs)->pcop->type == PO_GPR_TEMP)
+ switch(PCI(pcs)->pcop->type) {
+ case PO_GPR_TEMP:
+ case PO_FSR:
+ //case PO_INDF:
n = PCOR(PCI(pcs)->pcop)->r->name;
- else
+
+ break;
+ default:
n = PCI(pcs)->pcop->name;
+ }
- if(peepBlock->vars[index])
- return (strcmp(peepBlock->vars[index],n) == 0);
+ if(peepBlock->target.vars[index])
+ return (strcmp(peepBlock->target.vars[index],n) == 0);
else {
- peepBlock->vars[index] = n; //PCI(pcs)->pcop->name;
+ DFPRINTF((stderr,"first time for a variable: %d, %s\n",index,n));
+ peepBlock->target.vars[index] = n;
return 1;
}
}
+
}
+ /* FIXME - need an else to check the case when the destination
+ * isn't a wild card */
} else
/* The pcd has no operand. Lines match if pcs has no operand either*/
return (PCI(pcs)->pcop == NULL);
}
}
+ /* Compare a wild instruction to a regular one. */
if((pcd->type == PC_WILD) && (pcs->type == PC_OPCODE)) {
- int labindex;
index = PCW(pcd)->id;
-
- fprintf(stderr,"%s comparing wild cards\n",__FUNCTION__);
+#ifdef PCODE_DEBUG
+ DFPRINTF((stderr,"%s comparing wild cards\n",__FUNCTION__));
pcs->print(stderr,pcs);
pcd->print(stderr,pcd);
+#endif
+ peepBlock->target.wildpCodes[PCW(pcd)->id] = pcs;
- peepBlock->wildpCodes[PCW(pcd)->id] = pcs;
-
- /* Check for a label associated with this wild pCode */
- // If the wild card has a label, make sure the source code does too.
- if(PCW(pcd)->label) {
- if(!pcs->label)
- return 0;
+ if(!pCodePeepMatchLabels(peepBlock, pcs, pcd)) {
+ DFPRINTF((stderr," Failing because labels don't match\n"));
+ return 0;
+ }
- labindex = PCOW(PCW(pcd)->label)->id;
- if(peepBlock->vars[labindex] == NULL) {
- // First time to encounter this label
- peepBlock->vars[labindex] = PCL(pcs->label->pc)->label;
- fprintf(stderr,"first time for a label\n");
- } else {
- if(strcmp(peepBlock->vars[labindex],PCL(pcs->label->pc)->label) != 0) {
- fprintf(stderr,"labels don't match\n");
- return 0;
- }
- fprintf(stderr,"matched a label\n");
- }
+ if(PCW(pcd)->mustBeBitSkipInst & !(PCI(pcs)->isBitInst && PCI(pcs)->isSkip)) {
+ // doesn't match because the wild pcode must be a bit skip
+ DFPRINTF((stderr," Failing match because bit skip is req\n"));
+ //pcd->print(stderr,pcd);
+ //pcs->print(stderr,pcs);
+ return 0;
+ }
- }
+ if(PCW(pcd)->mustNotBeBitSkipInst & (PCI(pcs)->isBitInst && PCI(pcs)->isSkip)) {
+ // doesn't match because the wild pcode must *not* be a bit skip
+ DFPRINTF((stderr," Failing match because shouldn't be bit skip\n"));
+ //pcd->print(stderr,pcd);
+ //pcs->print(stderr,pcs);
+ return 0;
+ }
if(PCW(pcd)->operand) {
PCOW(PCI(pcd)->pcop)->matched = PCI(pcs)->pcop;
- if(peepBlock->vars[index]) {
- int i = (strcmp(peepBlock->vars[index],PCI(pcs)->pcop->name) == 0);
+ if(peepBlock->target.vars[index]) {
+ int i = (strcmp(peepBlock->target.vars[index],PCI(pcs)->pcop->name) == 0);
+#ifdef PCODE_DEBUG
+
if(i)
- fprintf(stderr," (matched)\n");
+ DFPRINTF((stderr," (matched)\n"));
else {
- fprintf(stderr," (no match: wild card operand mismatch\n");
- fprintf(stderr," peepblock= %s, pcodeop= %s\n",
- peepBlock->vars[index],
- PCI(pcs)->pcop->name);
+ DFPRINTF((stderr," (no match: wild card operand mismatch\n"));
+ DFPRINTF((stderr," peepblock= %s, pcodeop= %s\n",
+ peepBlock->target.vars[index],
+ PCI(pcs)->pcop->name));
}
+#endif
return i;
} else {
- peepBlock->vars[index] = PCI(pcs)->pcop->name;
+ DFPRINTF((stderr," (matched %s\n",PCI(pcs)->pcop->name));
+ peepBlock->target.vars[index] = PCI(pcs)->pcop->name;
return 1;
}
}
pcs = findNextInstruction(pcs->next);
if(pcs) {
- fprintf(stderr," (next to match)\n");
- pcs->print(stderr,pcs);
+ //DFPRINTF((stderr," (next to match)\n"));
+ //pcs->print(stderr,pcs);
+ } else if(pcd->next) {
+ /* oops, we ran out of code, but there's more to the rule */
+ return 0;
}
return 1; /* wild card matches */
{
int i;
+ if(!pcp)
+ return;
+
+ DFPRINTF((stderr," Clearing peep rule vars\n"));
+ DFPRINTF((stderr," %d %d %d %d %d %d\n",
+ pcp->target.nvars,pcp->target.nops,pcp->target.nwildpCodes,
+ pcp->replace.nvars,pcp->replace.nops,pcp->replace.nwildpCodes));
+
+ for(i=0;i<pcp->target.nvars; i++)
+ pcp->target.vars[i] = NULL;
+ for(i=0;i<pcp->target.nops; i++)
+ pcp->target.wildpCodeOps[i] = NULL;
+ for(i=0;i<pcp->target.nwildpCodes; i++)
+ pcp->target.wildpCodes[i] = NULL;
+
+ for(i=0;i<pcp->replace.nvars; i++)
+ pcp->replace.vars[i] = NULL;
+ for(i=0;i<pcp->replace.nops; i++)
+ pcp->replace.wildpCodeOps[i] = NULL;
+ for(i=0;i<pcp->replace.nwildpCodes; i++)
+ pcp->replace.wildpCodes[i] = NULL;
+
- for(i=0;i<pcp->nvars; i++)
- pcp->vars[i] = NULL;
}
/*-----------------------------------------------------------------*/
+/* pCodeInsertAfter - splice in the pCode chain starting with pc2 */
+/* into the pCode chain containing pc1 */
/*-----------------------------------------------------------------*/
void pCodeInsertAfter(pCode *pc1, pCode *pc2)
{
if(pc1->next)
pc1->next->prev = pc2;
+ pc2->pb = pc1->pb;
pc2->prev = pc1;
pc1->next = pc2;
/*-----------------------------------------------------------------*/
/* pCodeOpCopy - copy a pcode operator */
/*-----------------------------------------------------------------*/
-static pCodeOp *pCodeOpCopy(pCodeOp *pcop)
+pCodeOp *pCodeOpCopy(pCodeOp *pcop)
{
pCodeOp *pcopnew=NULL;
switch(pcop->type) {
case PO_CRY:
case PO_BIT:
- pcopnew = Safe_calloc(1,sizeof(pCodeOpBit) );
- PCOB(pcopnew)->bit = PCOB(pcop)->bit;
- PCOB(pcopnew)->inBitSpace = PCOB(pcop)->inBitSpace;
+ //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)->pcp->vars[PCOW(pcop)->id]);
- fprintf(stderr,"copied a wild op named %s\n",pcopnew->name);
+ 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_LITERAL:
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;
+ 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_REGISTER:
case PO_GPR_TEMP:
- case PO_SFR_REGISTER:
+ 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_STATUS:
- case PO_FSR:
- case PO_INDF:
+ 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;
- pcopnew->name = Safe_strdup(pcop->name);
+ if(pcop->name)
+ pcopnew->name = Safe_strdup(pcop->name);
+ else
+ pcopnew->name = NULL;
return pcopnew;
}
-#if 0
+
/*-----------------------------------------------------------------*/
/* pCodeCopy - copy a pcode */
/*-----------------------------------------------------------------*/
-static pCode *pCodeCopy(pCode *pc)
+static 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));
- pCode *pcnew;
+ 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;
- pcnew = newpCode(pc->type,pc->pcop);
+ return PCODE(new_pci);
}
-#endif
+
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
void pCodeDeleteChain(pCode *f,pCode *t)
{
pCode *pc;
+
while(f && f!=t) {
- fprintf(stderr,"delete pCode:\n");
+ DFPRINTF((stderr,"delete pCode:\n"));
pc = f->next;
f->print(stderr,f);
- //f->delete(f);
+ //f->delete(f); this dumps core...
+
f = pc;
+
}
}
{
pCodePeep *peepBlock;
pCode *pct, *pcin;
+ pCodeCSource *pc_cline=NULL;
_DLL *peeprules;
int matched;
while(peeprules) {
peepBlock = ((pCodePeepSnippets*)peeprules)->peep;
- pCodePeepClrVars(peepBlock);
+ if(!peepBlock || /*!peepBlock->target ||*/ !peepBlock->target.pb->pcHead) {
+ fprintf(stderr, "skipping rule because target pb is NULL\n");
+ goto next_rule;
+ }
+
+ pCodePeepClrVars(peepBlock);
+/*
pcin = pc;
- pct = peepBlock->target->pcHead;
+ if(IS_PCCOMMENT(pcin))
+ pc = pcin = findNextInstruction(pcin->next);
+*/
+ pcin = pc = findNextInstruction(pc);
+
+ pct = peepBlock->target.pb->pcHead;
+#ifdef PCODE_DEBUG
+ {
+ pCode *pcr = peepBlock->replace.pb->pcHead;
+ if(pcr) pct->print(stderr,pcr);
+ }
+#endif
matched = 0;
while(pct && pcin) {
pcin = findNextInstruction(pcin->next);
pct = pct->next;
//debug:
- fprintf(stderr," matched\n");
- if(!pcin)
- fprintf(stderr," end of code\n");
- if(!pct)
- fprintf(stderr," end of rule\n");
+ //DFPRINTF((stderr," matched\n"));
+ if(!pcin && pct) {
+ DFPRINTF((stderr," partial match... no more code\n"));
+ matched = 0;
+ }
+ if(!pct) {
+ DFPRINTF((stderr," end of rule\n"));
+ }
}
- if(matched && pcin) {
+ if(matched) {
/* So far we matched the rule up to the point of the conditions .
* In other words, all of the opcodes match. Now we need to see
* following the point just past where we have matched depend on
* the `postFalseCond' as input then we abort the match
*/
- fprintf(stderr," matched rule so far, now checking conditions\n");
- if (peepBlock->postFalseCond &&
+ DFPRINTF((stderr," matched rule so far, now checking conditions\n"));
+ if (pcin && peepBlock->postFalseCond &&
(pCodeSearchCondition(pcin,peepBlock->postFalseCond) > 0) )
matched = 0;
}
- if(matched && pcin) {
+ if(matched) {
pCode *pcprev;
pCode *pcr;
/* We matched a rule! Now we have to go through and remove the
inefficient code with the optimized version */
-
- fprintf(stderr, "Found a pcode peep match:\nRule:\n");
- printpCodeString(stderr,peepBlock->target->pcHead,10);
- fprintf(stderr,"first thing matched\n");
+#ifdef PCODE_DEBUG
+ DFPRINTF((stderr, "Found a pcode peep match:\nRule:\n"));
+ printpCodeString(stderr,peepBlock->target.pb->pcHead,10);
+ DFPRINTF((stderr,"first thing matched\n"));
pc->print(stderr,pc);
- fprintf(stderr,"last thing matched\n");
- pcin->print(stderr,pcin);
+ if(pcin) {
+ DFPRINTF((stderr,"last thing matched\n"));
+ pcin->print(stderr,pcin);
+ }
+#endif
+
/* Unlink the original code */
pcprev = pc->prev;
pcprev->next = pcin;
- pcin->prev = pc->prev;
- pCodeDeleteChain(pc,pcin);
+ if(pcin)
+ pcin->prev = pc->prev;
+
+
+
+ {
+ /* DEBUG */
+ /* Converted the deleted pCodes into comments */
+
+ char buf[256];
+ pCodeCSource *pc_cline2=NULL;
+
+ buf[0] = ';';
+ buf[1] = '#';
+
+ while(pc && pc!=pcin) {
+
+ if(pc->type == PC_OPCODE && PCI(pc)->cline) {
+ if(pc_cline) {
+ pc_cline2->pc.next = PCODE(PCI(pc)->cline);
+ pc_cline2 = PCCS(pc_cline2->pc.next);
+ } else {
+ pc_cline = pc_cline2 = PCI(pc)->cline;
+ pc_cline->pc.seq = pc->seq;
+ }
+ }
+
+ pCode2str(&buf[2], 254, pc);
+ pCodeInsertAfter(pcprev, newpCodeCharP(buf));
+ pcprev = pcprev->next;
+ pc = pc->next;
+
+ }
+ if(pc_cline2)
+ pc_cline2->pc.next = NULL;
+ }
+
+ if(pcin)
+ pCodeDeleteChain(pc,pcin);
/* Generate the replacement code */
pc = pcprev;
- pcr = peepBlock->replace->pcHead; // This is the replacement code
+ pcr = peepBlock->replace.pb->pcHead; // This is the replacement code
while (pcr) {
pCodeOp *pcop=NULL;
+
/* If the replace pcode is an instruction with an operand, */
/* then duplicate the operand (and expand wild cards in the process). */
if(pcr->type == PC_OPCODE) {
- if(PCI(pcr)->pcop)
- pcop = pCodeOpCopy(PCI(pcr)->pcop);
- fprintf(stderr,"inserting pCode\n");
+ if(PCI(pcr)->pcop) {
+ /* The replacing instruction has an operand.
+ * Is it wild? */
+ if(PCI(pcr)->pcop->type == PO_WILD) {
+ int index = PCOW(PCI(pcr)->pcop)->id;
+ //DFPRINTF((stderr,"copying wildopcode\n"));
+ if(peepBlock->target.wildpCodeOps[index])
+ pcop = pCodeOpCopy(peepBlock->target.wildpCodeOps[index]);
+ else
+ DFPRINTF((stderr,"error, wildopcode in replace but not source?\n"));
+ } else
+ pcop = pCodeOpCopy(PCI(pcr)->pcop);
+ }
+ //DFPRINTF((stderr,"inserting pCode\n"));
pCodeInsertAfter(pc, newpCode(PCI(pcr)->op,pcop));
} else if (pcr->type == PC_WILD) {
- pCodeInsertAfter(pc,peepBlock->wildpCodes[PCW(pcr)->id]);
+ if(PCW(pcr)->invertBitSkipInst)
+ DFPRINTF((stderr,"We need to invert the bit skip instruction\n"));
+ pCodeInsertAfter(pc,
+ pCodeInstructionCopy(PCI(peepBlock->target.wildpCodes[PCW(pcr)->id]),
+ PCW(pcr)->invertBitSkipInst));
+ } else if (pcr->type == PC_COMMENT) {
+ pCodeInsertAfter(pc, newpCodeCharP( ((pCodeComment *)(pcr))->comment));
}
pc = pc->next;
- pc->print(stderr,pc);
+#ifdef PCODE_DEBUG
+ DFPRINTF((stderr," NEW Code:"));
+ if(pc) pc->print(stderr,pc);
+#endif
pcr = pcr->next;
}
+ /* We have just replaced the inefficient code with the rule.
+ * Now, we need to re-add the C-source symbols if there are any */
+ pc = pcprev;
+ while(pc_cline ) {
+
+ pc = findNextInstruction(pc->next);
+ PCI(pc)->cline = pc_cline;
+ pc_cline = PCCS(pc_cline->pc.next);
+
+ }
+
return 1;
}
-
+ next_rule:
peeprules = peeprules->next;
}
+ DFPRINTF((stderr," no rule matched\n"));
return 0;
}
-
-
-
-
-
-
-
-
-
-
-#if 0
-/*******************/
-pCode *parseLineNode(char *ln)
-{
- char buffer[50], *s;
- int state=0; //0 label, 1 mnemonic, 2 operand, 3 operand, 4 comment
- int var;
- pCode *pc = NULL;
- // pCodeLabel *pcl = NULL;
-
- if(!ln || !*ln)
- return pc;
-
- s = buffer;
- *s = 0;
-
- while(*ln) {
-
- /* skip white space */
- while (isspace (*ln))
- ln++;
-
- switch(state) {
-
- case 0: // look for a label
- case 1: // look for mnemonic
-
- if(*ln == '%') {
-
- // Wild
-
- ln++;
- if(!isdigit(*ln) )
- break;
- //goto next_state;
-
- var = strtol(ln, &ln, 10);
- if(*ln == ':') {
- // valid wild card label
- fprintf(stderr, " wildcard label: %d\n",var);
- ln++;
- } else
- fprintf(stderr, " wild opcode: %d\n",var), state++;
-
- } else {
- // not wild
- // Extract the label/mnemonic from the line
-
- s = buffer;
- while(*ln && !(isspace(*ln) || *ln == ':'))
- *s++ = *ln++;
-
- *s = 0;
- if(*ln == ':')
- fprintf(stderr," regular label: %s\n",buffer), ln++;
- else
- fprintf(stderr," regular mnem: %s\n",buffer), state++;
- }
- state++;
- break;
-
- default:
- ln++;
-
- }
- }
-
- return pc;
-
-}
-#endif
projects / fw / sdcc / blobdiff