Made everything static
-------------------------------------------------------------------------*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include "SDCCglobl.h"
-#include "newalloc.h"
-
#if defined(_MSC_VER) && (_MSC_VER < 1300)
#define __FUNCTION__ __FILE__
#endif
#include "common.h"
-#include "SDCCpeeph.h"
-#include "ralloc.h"
-#include "pcode.h"
+#include "newalloc.h"
+//#include "SDCCglobl.h"
+//#include "SDCCpeeph.h"
+
#include "gen.h"
+#include "pcode.h"
+#include "ralloc.h"
#define BYTEofLONG(l,b) ( (l>> (b<<3)) & 0xff)
-void DEBUGpic14_AopType(int line_no, operand *left, operand *right, operand *result);
const char *AopType(short type)
{
- switch(type) {
- case AOP_LIT:
- return "AOP_LIT";
- break;
- case AOP_REG:
- return "AOP_REG";
- break;
- case AOP_DIR:
- return "AOP_DIR";
- break;
- case AOP_DPTR:
- return "AOP_DPTR";
- break;
- case AOP_DPTR2:
- return "AOP_DPTR2";
- break;
- case AOP_R0:
- return "AOP_R0";
- break;
- case AOP_R1:
- return "AOP_R1";
- break;
- case AOP_STK:
- return "AOP_STK";
- break;
- case AOP_IMMD:
- return "AOP_IMMD";
- break;
- case AOP_STR:
- return "AOP_STR";
- break;
- case AOP_CRY:
- return "AOP_CRY";
- break;
- case AOP_ACC:
- return "AOP_ACC";
- break;
- case AOP_PCODE:
- return "AOP_PCODE";
- break;
- }
-
- return "BAD TYPE";
-}
-
-void DebugAop(asmop *aop)
-{
- if(!aop)
- return;
- printf("%s\n",AopType(aop->type));
- printf(" current offset: %d\n",aop->coff);
- printf(" size: %d\n",aop->size);
-
- switch(aop->type) {
- case AOP_LIT:
- printf(" name: %s\n",aop->aopu.aop_lit->name);
- break;
- case AOP_REG:
- printf(" name: %s\n",aop->aopu.aop_reg[0]->name);
- break;
- case AOP_CRY:
- case AOP_DIR:
- printf(" name: %s\n",aop->aopu.aop_dir);
- break;
- case AOP_DPTR:
- case AOP_DPTR2:
- case AOP_R0:
- case AOP_R1:
- case AOP_ACC:
- printf("not supported\n");
- break;
- case AOP_STK:
- printf(" Stack offset: %d\n",aop->aopu.aop_stk);
- break;
- case AOP_IMMD:
- printf(" immediate: %s\n",aop->aopu.aop_immd);
- break;
- case AOP_STR:
- printf(" aop_str[0]: %s\n",aop->aopu.aop_str[0]);
- break;
- case AOP_PCODE:
- //printpCode(stdout,aop->aopu.pcop);
- break;
- }
+ switch(type) {
+ case AOP_LIT:
+ return "AOP_LIT";
+ break;
+ case AOP_REG:
+ return "AOP_REG";
+ break;
+ case AOP_DIR:
+ return "AOP_DIR";
+ break;
+ case AOP_STK:
+ return "AOP_STK";
+ break;
+ case AOP_IMMD:
+ return "AOP_IMMD";
+ break;
+ case AOP_STR:
+ return "AOP_STR";
+ break;
+ case AOP_CRY:
+ return "AOP_CRY";
+ break;
+ case AOP_PCODE:
+ return "AOP_PCODE";
+ break;
+ }
+
+ return "BAD TYPE";
}
-const char *pCodeOpType( pCodeOp *pcop)
+const char *pCodeOpType(pCodeOp *pcop)
{
-
- if(pcop) {
-
- switch(pcop->type) {
-
- case PO_NONE:
- return "PO_NONE";
- case PO_W:
- return "PO_W";
- case PO_STATUS:
- return "PO_STATUS";
- case PO_FSR:
- return "PO_FSR";
- case PO_INDF:
- return "PO_INDF";
- case PO_INTCON:
- return "PO_INTCON";
- case PO_GPR_REGISTER:
- return "PO_GPR_REGISTER";
- case PO_GPR_POINTER:
- return "PO_GPR_POINTER";
- case PO_GPR_BIT:
- return "PO_GPR_BIT";
- case PO_GPR_TEMP:
- return "PO_GPR_TEMP";
- case PO_SFR_REGISTER:
- return "PO_SFR_REGISTER";
- case PO_PCL:
- return "PO_PCL";
- case PO_PCLATH:
- return "PO_PCLATH";
- case PO_LITERAL:
- return "PO_LITERAL";
- case PO_IMMEDIATE:
- return "PO_IMMEDIATE";
- case PO_DIR:
- return "PO_DIR";
- case PO_CRY:
- return "PO_CRY";
- case PO_BIT:
- return "PO_BIT";
- case PO_STR:
- return "PO_STR";
- case PO_LABEL:
- return "PO_LABEL";
- case PO_WILD:
- return "PO_WILD";
- }
- }
-
- return "BAD PO_TYPE";
+
+ if(pcop) {
+
+ switch(pcop->type) {
+
+ case PO_NONE:
+ return "PO_NONE";
+ case PO_W:
+ return "PO_W";
+ case PO_STATUS:
+ return "PO_STATUS";
+ case PO_FSR:
+ return "PO_FSR";
+ case PO_INDF:
+ return "PO_INDF";
+ case PO_INTCON:
+ return "PO_INTCON";
+ case PO_GPR_REGISTER:
+ return "PO_GPR_REGISTER";
+ case PO_GPR_POINTER:
+ return "PO_GPR_POINTER";
+ case PO_GPR_BIT:
+ return "PO_GPR_BIT";
+ case PO_GPR_TEMP:
+ return "PO_GPR_TEMP";
+ case PO_SFR_REGISTER:
+ return "PO_SFR_REGISTER";
+ case PO_PCL:
+ return "PO_PCL";
+ case PO_PCLATH:
+ return "PO_PCLATH";
+ case PO_LITERAL:
+ return "PO_LITERAL";
+ case PO_IMMEDIATE:
+ return "PO_IMMEDIATE";
+ case PO_DIR:
+ return "PO_DIR";
+ case PO_CRY:
+ return "PO_CRY";
+ case PO_BIT:
+ return "PO_BIT";
+ case PO_STR:
+ return "PO_STR";
+ case PO_LABEL:
+ return "PO_LABEL";
+ case PO_WILD:
+ return "PO_WILD";
+ }
+ }
+
+ return "BAD PO_TYPE";
}
/*-----------------------------------------------------------------*/
/* genPlusIncr :- does addition with increment if possible */
/*-----------------------------------------------------------------*/
-bool genPlusIncr (iCode *ic)
-{
- unsigned int icount ;
- unsigned int size = pic14_getDataSize(IC_RESULT(ic));
-
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
- DEBUGpic14_emitcode ("; ","result %s, left %s, right %s",
- AopType(AOP_TYPE(IC_RESULT(ic))),
- AopType(AOP_TYPE(IC_LEFT(ic))),
- AopType(AOP_TYPE(IC_RIGHT(ic))));
-
- /* will try to generate an increment */
- /* if the right side is not a literal
- we cannot */
- if (AOP_TYPE(IC_RIGHT(ic)) != AOP_LIT)
- return FALSE ;
-
- DEBUGpic14_emitcode ("; ","%s %d",__FUNCTION__,__LINE__);
- /* if the literal value of the right hand side
- is greater than 1 then it is faster to add */
- if ((icount = (unsigned int) floatFromVal (AOP(IC_RIGHT(ic))->aopu.aop_lit)) > 2)
- return FALSE ;
-
- /* if increment 16 bits in register */
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) &&
- (icount == 1)) {
-
- int offset = MSB16;
-
- emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),LSB));
- //pic14_emitcode("incf","%s,f",aopGet(AOP(IC_RESULT(ic)),LSB,FALSE,FALSE));
-
- while(--size) {
- emitSKPNZ;
- emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),offset++));
- //pic14_emitcode(" incf","%s,f",aopGet(AOP(IC_RESULT(ic)),offset++,FALSE,FALSE));
- }
-
- return TRUE;
- }
-
- DEBUGpic14_emitcode ("; ","%s %d",__FUNCTION__,__LINE__);
- /* if left is in accumulator - probably a bit operation*/
- if( strcmp(aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE),"a") &&
- (AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) ) {
-
- emitpcode(POC_BCF, popGet(AOP(IC_RESULT(ic)),0));
- pic14_emitcode("bcf","(%s >> 3), (%s & 7)",
- AOP(IC_RESULT(ic))->aopu.aop_dir,
- AOP(IC_RESULT(ic))->aopu.aop_dir);
- if(icount)
- emitpcode(POC_XORLW,popGetLit(1));
- //pic14_emitcode("xorlw","1");
- else
- emitpcode(POC_ANDLW,popGetLit(1));
- //pic14_emitcode("andlw","1");
-
- emitSKPZ;
- emitpcode(POC_BSF, popGet(AOP(IC_RESULT(ic)),0));
- pic14_emitcode("bsf","(%s >> 3), (%s & 7)",
- AOP(IC_RESULT(ic))->aopu.aop_dir,
- AOP(IC_RESULT(ic))->aopu.aop_dir);
-
- return TRUE;
- }
-
-
-
- /* if the sizes are greater than 1 then we cannot */
- if (AOP_SIZE(IC_RESULT(ic)) > 1 ||
- AOP_SIZE(IC_LEFT(ic)) > 1 )
- return FALSE ;
-
- /* If we are incrementing the same register by two: */
-
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
-
- while (icount--)
- emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),0));
- //pic14_emitcode("incf","%s,f",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
-
- return TRUE ;
- }
-
- DEBUGpic14_emitcode ("; ","couldn't increment ");
-
- return FALSE ;
-}
-
-/*-----------------------------------------------------------------*/
-/* pic14_outBitAcc - output a bit in acc */
-/*-----------------------------------------------------------------*/
-void pic14_outBitAcc(operand *result)
-{
- symbol *tlbl = newiTempLabel(NULL);
- /* if the result is a bit */
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
-
- if (AOP_TYPE(result) == AOP_CRY){
- aopPut(AOP(result),"a",0);
- }
- else {
- pic14_emitcode("jz","%05d_DS_",tlbl->key+100);
- pic14_emitcode("mov","a,#01");
- pic14_emitcode("","%05d_DS_:",tlbl->key+100);
- pic14_outAcc(result);
- }
-}
-
-/*-----------------------------------------------------------------*/
-/* genPlusBits - generates code for addition of two bits */
-/*-----------------------------------------------------------------*/
-void genPlusBits (iCode *ic)
+static bool genPlusIncr (iCode *ic)
{
-
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
-
- DEBUGpic14_emitcode ("; ","result %s, left %s, right %s",
- AopType(AOP_TYPE(IC_RESULT(ic))),
- AopType(AOP_TYPE(IC_LEFT(ic))),
- AopType(AOP_TYPE(IC_RIGHT(ic))));
- /*
- The following block of code will add two bits.
- Note that it'll even work if the destination is
- the carry (C in the status register).
- It won't work if the 'Z' bit is a source or destination.
- */
-
- /* If the result is stored in the accumulator (w) */
- //if(strcmp(aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE),"a") == 0 ) {
- switch(AOP_TYPE(IC_RESULT(ic))) {
- case AOP_ACC:
- emitpcode(POC_CLRW, NULL);
- emitpcode(POC_BTFSC, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_XORLW, popGetLit(1));
- emitpcode(POC_BTFSC, popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_XORLW, popGetLit(1));
-
- pic14_emitcode("clrw","");
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_RIGHT(ic))->aopu.aop_dir,
- AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode("xorlw","1");
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_LEFT(ic))->aopu.aop_dir,
- AOP(IC_LEFT(ic))->aopu.aop_dir);
- pic14_emitcode("xorlw","1");
- break;
- case AOP_REG:
- emitpcode(POC_MOVLW, popGetLit(0));
- emitpcode(POC_BTFSC, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_XORLW, popGetLit(1));
- emitpcode(POC_BTFSC, popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_XORLW, popGetLit(1));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),0));
- break;
- /* case AOP_CRY:
- if(pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_LEFT(ic)))) {
-
- } else {
-
- }
- break;*/
- default:
- if(pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_LEFT(ic)))) {
- DebugAop(AOP(IC_LEFT(ic)));
- emitpcode(POC_MOVLW, popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_BTFSC, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_XORWF, popGet(AOP(IC_LEFT(ic)),0));
- } else {
- emitpcode(POC_MOVLW, popGet(AOP(IC_RESULT(ic)),0));
- emitpcode(POC_BCF, popGet(AOP(IC_RESULT(ic)),0));
- emitpcode(POC_BTFSC, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_XORWF, popGet(AOP(IC_RESULT(ic)),0));
- emitpcode(POC_BTFSC, popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_XORWF, popGet(AOP(IC_RESULT(ic)),0));
- }
-
-
- pic14_emitcode("movlw","(1 << (%s & 7))",
- AOP(IC_RESULT(ic))->aopu.aop_dir,
- AOP(IC_RESULT(ic))->aopu.aop_dir);
- pic14_emitcode("bcf","(%s >> 3), (%s & 7)",
- AOP(IC_RESULT(ic))->aopu.aop_dir,
- AOP(IC_RESULT(ic))->aopu.aop_dir);
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_RIGHT(ic))->aopu.aop_dir,
- AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode("xorwf","(%s >>3),f",
- AOP(IC_RESULT(ic))->aopu.aop_dir);
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_LEFT(ic))->aopu.aop_dir,
- AOP(IC_LEFT(ic))->aopu.aop_dir);
- pic14_emitcode("xorwf","(%s>>3),f",
- AOP(IC_RESULT(ic))->aopu.aop_dir);
- break;
- }
-
-}
-
-#if 0
-/* This is the original version of this code.
-*
-* This is being kept around for reference,
-* because I am not entirely sure I got it right...
-*/
-static void adjustArithmeticResult(iCode *ic)
-{
- if (AOP_SIZE(IC_RESULT(ic)) == 3 &&
- AOP_SIZE(IC_LEFT(ic)) == 3 &&
- !pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_LEFT(ic))))
- aopPut(AOP(IC_RESULT(ic)),
- aopGet(AOP(IC_LEFT(ic)),2,FALSE,FALSE),
- 2);
-
- if (AOP_SIZE(IC_RESULT(ic)) == 3 &&
- AOP_SIZE(IC_RIGHT(ic)) == 3 &&
- !pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_RIGHT(ic))))
- aopPut(AOP(IC_RESULT(ic)),
- aopGet(AOP(IC_RIGHT(ic)),2,FALSE,FALSE),
- 2);
-
- if (AOP_SIZE(IC_RESULT(ic)) == 3 &&
- AOP_SIZE(IC_LEFT(ic)) < 3 &&
- AOP_SIZE(IC_RIGHT(ic)) < 3 &&
- !pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_LEFT(ic))) &&
- !pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_RIGHT(ic)))) {
- char buffer[5];
- sprintf(buffer,"#%d",pointerCode(getSpec(operandType(IC_LEFT(ic)))));
- aopPut(AOP(IC_RESULT(ic)),buffer,2);
- }
-}
-//#else
-/* This is the pure and virtuous version of this code.
-* I'm pretty certain it's right, but not enough to toss the old
-* code just yet...
-*/
-static void adjustArithmeticResult(iCode *ic)
-{
- if (opIsGptr(IC_RESULT(ic)) &&
- opIsGptr(IC_LEFT(ic)) &&
- !pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_LEFT(ic))))
- {
- aopPut(AOP(IC_RESULT(ic)),
- aopGet(AOP(IC_LEFT(ic)), GPTRSIZE - 1,FALSE,FALSE),
- GPTRSIZE - 1);
- }
-
- if (opIsGptr(IC_RESULT(ic)) &&
- opIsGptr(IC_RIGHT(ic)) &&
- !pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_RIGHT(ic))))
- {
- aopPut(AOP(IC_RESULT(ic)),
- aopGet(AOP(IC_RIGHT(ic)),GPTRSIZE - 1,FALSE,FALSE),
- GPTRSIZE - 1);
- }
-
- if (opIsGptr(IC_RESULT(ic)) &&
- AOP_SIZE(IC_LEFT(ic)) < GPTRSIZE &&
- AOP_SIZE(IC_RIGHT(ic)) < GPTRSIZE &&
- !pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_LEFT(ic))) &&
- !pic14_sameRegs(AOP(IC_RESULT(ic)),AOP(IC_RIGHT(ic)))) {
- char buffer[5];
- sprintf(buffer,"#%d",pointerCode(getSpec(operandType(IC_LEFT(ic)))));
- aopPut(AOP(IC_RESULT(ic)),buffer,GPTRSIZE - 1);
- }
+ unsigned int icount ;
+ unsigned int size = pic14_getDataSize(IC_RESULT(ic));
+ FENTRY;
+
+ DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
+ DEBUGpic14_emitcode ("; ","result %s, left %s, right %s",
+ AopType(AOP_TYPE(IC_RESULT(ic))),
+ AopType(AOP_TYPE(IC_LEFT(ic))),
+ AopType(AOP_TYPE(IC_RIGHT(ic))));
+
+ /* will try to generate an increment */
+ /* if the right side is not a literal
+ we cannot */
+ if (AOP_TYPE(IC_RIGHT(ic)) != AOP_LIT)
+ return FALSE ;
+
+ DEBUGpic14_emitcode ("; ","%s %d",__FUNCTION__,__LINE__);
+ /* if the literal value of the right hand side
+ is greater than 1 then it is faster to add */
+ if ((icount = (unsigned int) ulFromVal (AOP(IC_RIGHT(ic))->aopu.aop_lit)) > 2)
+ return FALSE ;
+
+ /* if increment 16 bits in register */
+ if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) &&
+ (icount == 1)) {
+
+ int offset = MSB16;
+
+ emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),LSB));
+ //pic14_emitcode("incf","%s,f",aopGet(AOP(IC_RESULT(ic)),LSB,FALSE,FALSE));
+
+ while(--size) {
+ emitSKPNZ;
+ emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),offset++));
+ //pic14_emitcode(" incf","%s,f",aopGet(AOP(IC_RESULT(ic)),offset++,FALSE,FALSE));
+ }
+
+ return TRUE;
+ }
+
+ DEBUGpic14_emitcode ("; ","%s %d",__FUNCTION__,__LINE__);
+ /* if left is in accumulator - probably a bit operation*/
+ if( strcmp(aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE),"a") &&
+ (AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) ) {
+
+ emitpcode(POC_BCF, popGet(AOP(IC_RESULT(ic)),0));
+ pic14_emitcode("bcf","(%s >> 3), (%s & 7)",
+ AOP(IC_RESULT(ic))->aopu.aop_dir,
+ AOP(IC_RESULT(ic))->aopu.aop_dir);
+ if(icount)
+ emitpcode(POC_XORLW,popGetLit(1));
+ //pic14_emitcode("xorlw","1");
+ else
+ emitpcode(POC_ANDLW,popGetLit(1));
+ //pic14_emitcode("andlw","1");
+
+ emitSKPZ;
+ emitpcode(POC_BSF, popGet(AOP(IC_RESULT(ic)),0));
+ pic14_emitcode("bsf","(%s >> 3), (%s & 7)",
+ AOP(IC_RESULT(ic))->aopu.aop_dir,
+ AOP(IC_RESULT(ic))->aopu.aop_dir);
+
+ return TRUE;
+ }
+
+
+
+ /* if the sizes are greater than 1 then we cannot */
+ if (AOP_SIZE(IC_RESULT(ic)) > 1 ||
+ AOP_SIZE(IC_LEFT(ic)) > 1 )
+ return FALSE ;
+
+ /* If we are incrementing the same register by two: */
+
+ if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
+
+ while (icount--)
+ emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),0));
+ //pic14_emitcode("incf","%s,f",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
+
+ return TRUE ;
+ }
+
+ DEBUGpic14_emitcode ("; ","couldn't increment ");
+
+ return FALSE ;
}
-#endif
/*-----------------------------------------------------------------*/
/* genAddlit - generates code for addition */
/*-----------------------------------------------------------------*/
static void genAddLit2byte (operand *result, int offr, int lit)
{
-
- switch(lit & 0xff) {
- case 0:
- break;
- case 1:
- emitpcode(POC_INCF, popGet(AOP(result),offr));
- break;
- case 0xff:
- emitpcode(POC_DECF, popGet(AOP(result),offr));
- break;
- default:
- emitpcode(POC_MOVLW,popGetLit(lit&0xff));
- emitpcode(POC_ADDWF,popGet(AOP(result),offr));
- }
-
+ FENTRY;
+
+ switch(lit & 0xff) {
+ case 0:
+ break;
+ case 1:
+ emitpcode(POC_INCF, popGet(AOP(result),offr));
+ break;
+ case 0xff:
+ emitpcode(POC_DECF, popGet(AOP(result),offr));
+ break;
+ default:
+ emitpcode(POC_MOVLW,popGetLit(lit&0xff));
+ emitpcode(POC_ADDWF,popGet(AOP(result),offr));
+ }
+
}
static void emitMOVWF(operand *reg, int offset)
{
- if(!reg)
- return;
-
- if (AOP_TYPE(reg) == AOP_ACC) {
- DEBUGpic14_emitcode ("; ***","%s %d ignoring mov into W",__FUNCTION__,__LINE__);
- return;
- }
-
- emitpcode(POC_MOVWF, popGet(AOP(reg),offset));
-
+ FENTRY;
+ if(!reg)
+ return;
+
+ emitpcode(POC_MOVWF, popGet(AOP(reg),offset));
+
}
static void genAddLit (iCode *ic, int lit)
{
-
- int size,same;
- int lo;
-
- operand *result;
- operand *left;
-
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
-
-
- left = IC_LEFT(ic);
- result = IC_RESULT(ic);
- same = pic14_sameRegs(AOP(left), AOP(result));
- size = pic14_getDataSize(result);
-
- if(same) {
-
- /* Handle special cases first */
- if(size == 1)
- genAddLit2byte (result, 0, lit);
-
- else if(size == 2) {
- int hi = 0xff & (lit >> 8);
- lo = lit & 0xff;
-
- switch(hi) {
- case 0:
- /* lit = 0x00LL */
- DEBUGpic14_emitcode ("; hi = 0","%s %d",__FUNCTION__,__LINE__);
- switch(lo) {
- case 0:
- break;
- case 1:
- emitpcode(POC_INCF, popGet(AOP(result),0));
- emitSKPNZ;
- emitpcode(POC_INCF, popGet(AOP(result),MSB16));
- break;
- case 0xff:
- emitpcode(POC_DECF, popGet(AOP(result),0));
- emitpcode(POC_INCFSZW, popGet(AOP(result),0));
- emitpcode(POC_INCF, popGet(AOP(result),MSB16));
-
- break;
- default:
- emitpcode(POC_MOVLW,popGetLit(lit&0xff));
- emitpcode(POC_ADDWF,popGet(AOP(result),0));
- emitSKPNC;
- emitpcode(POC_INCF, popGet(AOP(result),MSB16));
-
-
- }
- break;
+ int size,same;
+ int lo;
- case 1:
- /* lit = 0x01LL */
- DEBUGpic14_emitcode ("; hi = 1","%s %d",__FUNCTION__,__LINE__);
- switch(lo) {
- case 0: /* 0x0100 */
- emitpcode(POC_INCF, popGet(AOP(result),MSB16));
- break;
- case 1: /* 0x0101 */
- emitpcode(POC_INCF, popGet(AOP(result),MSB16));
- emitpcode(POC_INCF, popGet(AOP(result),0));
- emitSKPNZ;
- emitpcode(POC_INCF, popGet(AOP(result),MSB16));
- break;
- case 0xff: /* 0x01ff */
- emitpcode(POC_DECF, popGet(AOP(result),0));
- emitpcode(POC_INCFSZW, popGet(AOP(result),0));
- emitpcode(POC_INCF, popGet(AOP(result),MSB16));
- emitpcode(POC_INCF, popGet(AOP(result),MSB16));
- }
- break;
-
- case 0xff:
- DEBUGpic14_emitcode ("; hi = ff","%s %d",__FUNCTION__,__LINE__);
- /* lit = 0xffLL */
- switch(lo) {
- case 0: /* 0xff00 */
- emitpcode(POC_DECF, popGet(AOP(result),MSB16));
- break;
- case 1: /*0xff01 */
- emitpcode(POC_INCFSZ, popGet(AOP(result),0));
- emitpcode(POC_DECF, popGet(AOP(result),MSB16));
- break;
- /* case 0xff: * 0xffff *
- emitpcode(POC_INCFSZW, popGet(AOP(result),0,FALSE,FALSE));
- emitpcode(POC_INCF, popGet(AOP(result),MSB16,FALSE,FALSE));
- emitpcode(POC_DECF, popGet(AOP(result),0,FALSE,FALSE));
- break;
- */
- default:
- emitpcode(POC_MOVLW,popGetLit(lo));
- emitpcode(POC_ADDWF,popGet(AOP(result),0));
- emitSKPC;
- emitpcode(POC_DECF, popGet(AOP(result),MSB16));
-
- }
-
- break;
-
- default:
- DEBUGpic14_emitcode ("; hi is generic","%d %s %d",hi,__FUNCTION__,__LINE__);
-
- /* lit = 0xHHLL */
- switch(lo) {
- case 0: /* 0xHH00 */
- genAddLit2byte (result, MSB16, hi);
- break;
- case 1: /* 0xHH01 */
- emitpcode(POC_MOVLW,popGetLit((hi+1)&0xff));
- emitpcode(POC_INCFSZ, popGet(AOP(result),0));
- emitpcode(POC_MOVLW,popGetLit(hi));
- emitpcode(POC_ADDWF,popGet(AOP(result),MSB16));
- break;
- /* case 0xff: * 0xHHff *
- emitpcode(POC_MOVFW, popGet(AOP(result),0,FALSE,FALSE));
- emitpcode(POC_DECF, popGet(AOP(result),MSB16,FALSE,FALSE));
- emitpcode(POC_MOVLW,popGetLit(hi));
- emitpcode(POC_ADDWF,popGet(AOP(result),MSB16,FALSE,FALSE));
- break;
- */ default: /* 0xHHLL */
- emitpcode(POC_MOVLW,popGetLit(lo));
- emitpcode(POC_ADDWF, popGet(AOP(result),0));
- emitpcode(POC_MOVLW,popGetLit(hi));
- emitSKPNC;
- emitpcode(POC_MOVLW,popGetLit((hi+1) & 0xff));
- emitpcode(POC_ADDWF,popGet(AOP(result),MSB16));
- break;
- }
-
- }
- } else {
- int carry_info = 0;
- int offset = 0;
- /* size > 2 */
- DEBUGpic14_emitcode ("; add lit to long","%s %d",__FUNCTION__,__LINE__);
-
- while(size--) {
- lo = BYTEofLONG(lit,0);
-
- if(carry_info) {
- switch(lo) {
- case 0:
- switch(carry_info) {
- case 1:
- emitSKPNZ;
- emitpcode(POC_INCF, popGet(AOP(result),offset));
- break;
- case 2:
- emitpcode(POC_RLFW, popGet(AOP(result),offset));
- emitpcode(POC_ANDLW,popGetLit(1));
- emitpcode(POC_ADDWF, popGet(AOP(result),offset));
- break;
- default: /* carry_info = 3 */
- emitSKPNC;
- emitpcode(POC_INCF, popGet(AOP(result),offset));
- carry_info = 1;
- break;
- }
- break;
- case 0xff:
- emitpcode(POC_MOVLW,popGetLit(lo));
- if(carry_info==1)
- emitSKPZ;
- else
- emitSKPC;
- emitpcode(POC_ADDWF, popGet(AOP(result),offset));
- break;
- default:
- emitpcode(POC_MOVLW,popGetLit(lo));
- if(carry_info==1)
- emitSKPNZ;
- else
- emitSKPNC;
- emitpcode(POC_MOVLW,popGetLit(lo+1));
- emitpcode(POC_ADDWF, popGet(AOP(result),offset));
- carry_info=2;
- break;
- }
- }else {
- /* no carry info from previous step */
- /* this means this is the first time to add */
- switch(lo) {
- case 0:
- break;
- case 1:
- emitpcode(POC_INCF, popGet(AOP(result),offset));
- carry_info=1;
- break;
- default:
- emitpcode(POC_MOVLW,popGetLit(lo));
- emitpcode(POC_ADDWF, popGet(AOP(result),offset));
- if(lit <0x100)
- carry_info = 3; /* Were adding only one byte and propogating the carry */
- else
- carry_info = 2;
- break;
- }
- }
- offset++;
- lit >>= 8;
- }
-
- /*
- lo = BYTEofLONG(lit,0);
-
- if(lit < 0x100) {
- if(lo) {
- if(lo == 1) {
- emitpcode(POC_INCF, popGet(AOP(result),0,FALSE,FALSE));
- emitSKPNZ;
- } else {
- emitpcode(POC_MOVLW,popGetLit(lo));
- emitpcode(POC_ADDWF, popGet(AOP(result),0,FALSE,FALSE));
- emitSKPNC;
- }
- emitpcode(POC_INCF, popGet(AOP(result),1,FALSE,FALSE));
- emitSKPNZ;
- emitpcode(POC_INCF, popGet(AOP(result),2,FALSE,FALSE));
- emitSKPNZ;
- emitpcode(POC_INCF, popGet(AOP(result),3,FALSE,FALSE));
-
- }
- }
- }
-
- */
- }
- } else {
- int offset = 1;
- DEBUGpic14_emitcode ("; left and result aren't same","%s %d",__FUNCTION__,__LINE__);
-
- if(size == 1) {
-
- if(AOP_TYPE(left) == AOP_ACC) {
- /* left addend is already in accumulator */
- switch(lit & 0xff) {
- case 0:
- //emitpcode(POC_MOVWF, popGet(AOP(result),0,FALSE,FALSE));
- emitMOVWF(result,0);
- break;
- default:
- emitpcode(POC_ADDLW, popGetLit(lit & 0xff));
- //emitpcode(POC_MOVWF, popGet(AOP(result),0,FALSE,FALSE));
- emitMOVWF(result,0);
- }
- } else {
- /* left addend is in a register */
- switch(lit & 0xff) {
- case 0:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitMOVWF(result, 0);
- //emitpcode(POC_MOVWF, popGet(AOP(result),0,FALSE,FALSE));
- emitMOVWF(result,0);
- break;
- case 1:
- emitpcode(POC_INCFW, popGet(AOP(left),0));
- //emitpcode(POC_MOVWF, popGet(AOP(result),0,FALSE,FALSE));
- emitMOVWF(result,0);
- break;
- case 0xff:
- emitpcode(POC_DECFW, popGet(AOP(left),0));
- //emitpcode(POC_MOVWF, popGet(AOP(result),0,FALSE,FALSE));
- emitMOVWF(result,0);
- break;
- default:
- emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
- emitpcode(POC_ADDFW, popGet(AOP(left),0));
- //emitpcode(POC_MOVWF, popGet(AOP(result),0,FALSE,FALSE));
- emitMOVWF(result,0);
- }
- }
-
- } else {
- int clear_carry=0;
-
- /* left is not the accumulator */
- if(lit & 0xff) {
- emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
- emitpcode(POC_ADDFW, popGet(AOP(left),0));
- } else {
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- /* We don't know the state of the carry bit at this point */
- clear_carry = 1;
- }
- //emitpcode(POC_MOVWF, popGet(AOP(result),0,FALSE,FALSE));
- emitMOVWF(result,0);
- while(--size) {
+ operand *result;
+ operand *left;
+
+ FENTRY;
+ DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
- lit >>= 8;
- if(lit & 0xff) {
- if(clear_carry) {
- /* The ls byte of the lit must've been zero - that
- means we don't have to deal with carry */
-
- emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
- emitpcode(POC_ADDFW, popGet(AOP(left),offset));
- emitpcode(POC_MOVWF, popGet(AOP(left),offset));
-
- clear_carry = 0;
-
- } else {
- emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
- //emitpcode(POC_MOVWF, popGet(AOP(result),offset,FALSE,FALSE));
- emitMOVWF(result,offset);
- emitpcode(POC_MOVFW, popGet(AOP(left),offset));
- emitSKPNC;
- emitpcode(POC_INCFSZW,popGet(AOP(left),offset));
- emitpcode(POC_ADDWF, popGet(AOP(result),offset));
- }
-
+
+ left = IC_LEFT(ic);
+ result = IC_RESULT(ic);
+ same = pic14_sameRegs(AOP(left), AOP(result));
+ size = pic14_getDataSize(result);
+ if (size > pic14_getDataSize(left))
+ size = pic14_getDataSize(left);
+
+ if(same) {
+
+ /* Handle special cases first */
+ if(size == 1)
+ genAddLit2byte (result, 0, lit);
+
+ else if(size == 2) {
+ int hi = 0xff & (lit >> 8);
+ lo = lit & 0xff;
+
+ switch(hi) {
+ case 0:
+
+ /* lit = 0x00LL */
+ DEBUGpic14_emitcode ("; hi = 0","%s %d",__FUNCTION__,__LINE__);
+ switch(lo) {
+ case 0:
+ break;
+ case 1:
+ emitpcode(POC_INCF, popGet(AOP(result),0));
+ emitSKPNZ;
+ emitpcode(POC_INCF, popGet(AOP(result),MSB16));
+ break;
+ case 0xff:
+ emitpcode(POC_DECF, popGet(AOP(result),0));
+ emitpcode(POC_INCFSZW, popGet(AOP(result),0));
+ emitpcode(POC_INCF, popGet(AOP(result),MSB16));
+
+ break;
+ default:
+ emitpcode(POC_MOVLW,popGetLit(lit&0xff));
+ emitpcode(POC_ADDWF,popGet(AOP(result),0));
+ emitSKPNC;
+ emitpcode(POC_INCF, popGet(AOP(result),MSB16));
+
+
+ }
+ break;
+
+ case 1:
+ /* lit = 0x01LL */
+ DEBUGpic14_emitcode ("; hi = 1","%s %d",__FUNCTION__,__LINE__);
+ switch(lo) {
+ case 0: /* 0x0100 */
+ emitpcode(POC_INCF, popGet(AOP(result),MSB16));
+ break;
+ case 1: /* 0x0101 */
+ emitpcode(POC_INCF, popGet(AOP(result),MSB16));
+ emitpcode(POC_INCF, popGet(AOP(result),0));
+ emitSKPNZ;
+ emitpcode(POC_INCF, popGet(AOP(result),MSB16));
+ break;
+ case 0xff: /* 0x01ff */
+ emitpcode(POC_DECF, popGet(AOP(result),0));
+ emitpcode(POC_INCFSZW, popGet(AOP(result),0));
+ emitpcode(POC_INCF, popGet(AOP(result),MSB16));
+ emitpcode(POC_INCF, popGet(AOP(result),MSB16));
+ }
+ break;
+
+ case 0xff:
+ DEBUGpic14_emitcode ("; hi = ff","%s %d",__FUNCTION__,__LINE__);
+ /* lit = 0xffLL */
+ switch(lo) {
+ case 0: /* 0xff00 */
+ emitpcode(POC_DECF, popGet(AOP(result),MSB16));
+ break;
+ case 1: /*0xff01 */
+ emitpcode(POC_INCFSZ, popGet(AOP(result),0));
+ emitpcode(POC_DECF, popGet(AOP(result),MSB16));
+ break;
+ default:
+ emitpcode(POC_MOVLW,popGetLit(lo));
+ emitpcode(POC_ADDWF,popGet(AOP(result),0));
+ emitSKPC;
+ emitpcode(POC_DECF, popGet(AOP(result),MSB16));
+
+ }
+
+ break;
+
+ default:
+ DEBUGpic14_emitcode ("; hi is generic","%d %s %d",hi,__FUNCTION__,__LINE__);
+
+ /* lit = 0xHHLL */
+ switch(lo) {
+ case 0: /* 0xHH00 */
+ genAddLit2byte (result, MSB16, hi);
+ break;
+ case 1: /* 0xHH01 */
+ emitpcode(POC_MOVLW,popGetLit((hi+1)&0xff));
+ emitpcode(POC_INCFSZ, popGet(AOP(result),0));
+ emitpcode(POC_MOVLW,popGetLit(hi));
+ emitpcode(POC_ADDWF,popGet(AOP(result),MSB16));
+ break;
+ default: /* 0xHHLL */
+ emitpcode(POC_MOVLW,popGetLit(lo));
+ emitpcode(POC_ADDWF, popGet(AOP(result),0));
+ emitpcode(POC_MOVLW,popGetLit(hi));
+ emitSKPNC;
+ emitpcode(POC_MOVLW,popGetLit((hi+1) & 0xff));
+ emitpcode(POC_ADDWF,popGet(AOP(result),MSB16));
+ break;
+ }
+
+ }
+ } else {
+ int carry_info = 0;
+ int offset = 0;
+ /* size > 2 */
+ DEBUGpic14_emitcode ("; add lit to long","%s %d",__FUNCTION__,__LINE__);
+
+ while(size--) {
+ lo = BYTEofLONG(lit,0);
+
+ if(carry_info) {
+ switch(lo) {
+ case 0:
+ switch(carry_info) {
+ case 1:
+ emitSKPNZ;
+ emitpcode(POC_INCF, popGet(AOP(result),offset));
+ break;
+ case 2:
+ emitpcode(POC_RLFW, popGet(AOP(result),offset));
+ emitpcode(POC_ANDLW,popGetLit(1));
+ emitpcode(POC_ADDWF, popGet(AOP(result),offset));
+ break;
+ default: /* carry_info = 3 */
+ emitSKPNC;
+ emitpcode(POC_INCF, popGet(AOP(result),offset));
+ carry_info = 1;
+ break;
+ }
+ break;
+ case 0xff:
+ emitpcode(POC_MOVLW,popGetLit(lo));
+ if(carry_info==1)
+ emitSKPZ;
+ else
+ emitSKPC;
+ emitpcode(POC_ADDWF, popGet(AOP(result),offset));
+ break;
+ default:
+ emitpcode(POC_MOVLW,popGetLit(lo));
+ if(carry_info==1)
+ emitSKPNZ;
+ else
+ emitSKPNC;
+ emitpcode(POC_MOVLW,popGetLit(lo+1));
+ emitpcode(POC_ADDWF, popGet(AOP(result),offset));
+ carry_info=2;
+ break;
+ }
+ }else {
+ /* no carry info from previous step */
+ /* this means this is the first time to add */
+ switch(lo) {
+ case 0:
+ break;
+ case 1:
+ emitpcode(POC_INCF, popGet(AOP(result),offset));
+ carry_info=1;
+ break;
+ default:
+ emitpcode(POC_MOVLW,popGetLit(lo));
+ emitpcode(POC_ADDWF, popGet(AOP(result),offset));
+ if(lit <0x100)
+ carry_info = 3; /* Were adding only one byte and propogating the carry */
+ else
+ carry_info = 2;
+ break;
+ }
+ }
+ offset++;
+ lit >>= 8;
+ }
+ }
} else {
- emitpcode(POC_CLRF, popGet(AOP(result),offset));
- emitpcode(POC_RLF, popGet(AOP(result),offset));
- emitpcode(POC_MOVFW, popGet(AOP(left),offset));
- emitpcode(POC_ADDWF, popGet(AOP(result),offset));
+ int offset = 1;
+ DEBUGpic14_emitcode ("; left and result aren't same","%s %d",__FUNCTION__,__LINE__);
+
+ if(size == 1) {
+
+ /* left addend is in a register */
+ switch(lit & 0xff) {
+ case 0:
+ emitpcode(POC_MOVFW, popGet(AOP(left),0));
+ emitMOVWF(result, 0);
+ emitMOVWF(result,0);
+ break;
+ case 1:
+ emitpcode(POC_INCFW, popGet(AOP(left),0));
+ emitMOVWF(result,0);
+ break;
+ case 0xff:
+ emitpcode(POC_DECFW, popGet(AOP(left),0));
+ emitMOVWF(result,0);
+ break;
+ default:
+ emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
+ emitpcode(POC_ADDFW, popGet(AOP(left),0));
+ emitMOVWF(result,0);
+ }
+
+ } else {
+ int clear_carry=0;
+
+ /* left is not the accumulator */
+ if(lit & 0xff) {
+ emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
+ emitpcode(POC_ADDFW, popGet(AOP(left),0));
+ } else {
+ emitpcode(POC_MOVFW, popGet(AOP(left),0));
+ /* We don't know the state of the carry bit at this point */
+ clear_carry = 1;
+ }
+ emitMOVWF(result,0);
+ while(--size) {
+
+ lit >>= 8;
+ if(lit & 0xff) {
+ if(clear_carry) {
+ /* The ls byte of the lit must've been zero - that
+ means we don't have to deal with carry */
+
+ emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
+ emitpcode(POC_ADDFW, popGet(AOP(left),offset));
+ emitpcode(POC_MOVWF, popGet(AOP(left),offset));
+
+ clear_carry = 0;
+
+ } else {
+ emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
+ emitMOVWF(result,offset);
+ emitpcode(POC_MOVFW, popGet(AOP(left),offset));
+ emitSKPNC;
+ emitpcode(POC_INCFSZW,popGet(AOP(left),offset));
+ emitpcode(POC_ADDWF, popGet(AOP(result),offset));
+ }
+
+ } else {
+ emitpcode(POC_CLRF, popGet(AOP(result),offset));
+ emitpcode(POC_RLF, popGet(AOP(result),offset));
+ emitpcode(POC_MOVFW, popGet(AOP(left),offset));
+ emitpcode(POC_ADDWF, popGet(AOP(result),offset));
+ }
+ offset++;
+ }
+ }
}
- offset++;
- }
- }
- }
+
+ size = pic14_getDataSize(result);
+ if (size > pic14_getDataSize(left))
+ size = pic14_getDataSize(left);
+ addSign(result, size, 0);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
void genPlus (iCode *ic)
{
- int size, offset = 0;
-
- /* special cases :- */
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
-
- aopOp (IC_LEFT(ic),ic,FALSE);
- aopOp (IC_RIGHT(ic),ic,FALSE);
- aopOp (IC_RESULT(ic),ic,TRUE);
-
- DEBUGpic14_AopType(__LINE__,IC_LEFT(ic),IC_RIGHT(ic),IC_RESULT(ic));
-
- /* if literal, literal on the right or
- if left requires ACC or right is already
- in ACC */
-
- if (AOP_TYPE(IC_LEFT(ic)) == AOP_LIT) {
- operand *t = IC_RIGHT(ic);
- IC_RIGHT(ic) = IC_LEFT(ic);
- IC_LEFT(ic) = t;
- }
-
- /* if both left & right are in bit space */
- if (AOP_TYPE(IC_LEFT(ic)) == AOP_CRY &&
- AOP_TYPE(IC_RIGHT(ic)) == AOP_CRY) {
- genPlusBits (ic);
- goto release ;
- }
-
- /* if left in bit space & right literal */
- if (AOP_TYPE(IC_LEFT(ic)) == AOP_CRY &&
- AOP_TYPE(IC_RIGHT(ic)) == AOP_LIT) {
- /* if result in bit space */
- if(AOP_TYPE(IC_RESULT(ic)) == AOP_CRY){
- if((unsigned long)floatFromVal(AOP(IC_RIGHT(ic))->aopu.aop_lit) != 0L) {
- emitpcode(POC_MOVLW, popGet(AOP(IC_RESULT(ic)),0));
- if (!pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) )
- emitpcode(POC_BTFSC, popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_XORWF, popGet(AOP(IC_RESULT(ic)),0));
- }
- } else {
- size = pic14_getDataSize(IC_RESULT(ic));
- while (size--) {
- MOVA(aopGet(AOP(IC_RIGHT(ic)),offset,FALSE,FALSE));
- pic14_emitcode("addc","a,#00 ;%d",__LINE__);
- aopPut(AOP(IC_RESULT(ic)),"a",offset++);
- }
- }
- goto release ;
- }
-
- /* if I can do an increment instead
- of add then GOOD for ME */
- if (genPlusIncr (ic) == TRUE)
- goto release;
-
- size = pic14_getDataSize(IC_RESULT(ic));
-
- if(AOP(IC_RIGHT(ic))->type == AOP_LIT) {
- /* Add a literal to something else */
- //bool know_W=0;
- unsigned lit = (unsigned) floatFromVal(AOP(IC_RIGHT(ic))->aopu.aop_lit);
- // unsigned l1=0;
-
- // offset = 0;
- DEBUGpic14_emitcode(";","adding lit to something. size %d",size);
-
- genAddLit (ic, lit);
- goto release;
-
- } else if(AOP_TYPE(IC_RIGHT(ic)) == AOP_CRY) {
-
- pic14_emitcode(";bitadd","right is bit: %s",aopGet(AOP(IC_RIGHT(ic)),0,FALSE,FALSE));
- pic14_emitcode(";bitadd","left is bit: %s",aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- pic14_emitcode(";bitadd","result is bit: %s",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
-
- /* here we are adding a bit to a char or int */
- if(size == 1) {
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
+ int size, offset = 0;
- emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_INCF , popGet(AOP(IC_RESULT(ic)),0));
+ /* special cases :- */
+ DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
+ FENTRY;
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_RIGHT(ic))->aopu.aop_dir,
- AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode(" incf","%s,f", aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
- } else {
+ aopOp (IC_LEFT(ic),ic,FALSE);
+ aopOp (IC_RIGHT(ic),ic,FALSE);
+ aopOp (IC_RESULT(ic),ic,TRUE);
- if(AOP_TYPE(IC_LEFT(ic)) == AOP_ACC) {
- emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_XORLW , popGetLit(1));
-
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_RIGHT(ic))->aopu.aop_dir,
- AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode(" xorlw","1");
- } else {
- emitpcode(POC_MOVFW , popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_INCFW , popGet(AOP(IC_LEFT(ic)),0));
-
- pic14_emitcode("movf","%s,w", aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_RIGHT(ic))->aopu.aop_dir,
- AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode(" incf","%s,w", aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- }
+ DEBUGpic14_AopType(__LINE__,IC_LEFT(ic),IC_RIGHT(ic),IC_RESULT(ic));
- if(AOP_TYPE(IC_RESULT(ic)) != AOP_ACC) {
-
- if(AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) {
- emitpcode(POC_ANDLW , popGetLit(1));
- emitpcode(POC_BCF , popGet(AOP(IC_RESULT(ic)),0));
- emitSKPZ;
- emitpcode(POC_BSF , popGet(AOP(IC_RESULT(ic)),0));
- } else {
- emitpcode(POC_MOVWF , popGet(AOP(IC_RESULT(ic)),0));
- pic14_emitcode("movwf","%s", aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
- }
- }
- }
-
- } else {
- int offset = 1;
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
- emitCLRZ;
- emitpcode(POC_BTFSC, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),0));
+ /* if literal, literal on the right or
+ if left requires ACC or right is already
+ in ACC */
- pic14_emitcode("clrz","");
+ if (AOP_TYPE(IC_LEFT(ic)) == AOP_LIT) {
+ operand *t = IC_RIGHT(ic);
+ IC_RIGHT(ic) = IC_LEFT(ic);
+ IC_LEFT(ic) = t;
+ }
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_RIGHT(ic))->aopu.aop_dir,
- AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode(" incf","%s,f", aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
+ /* if left in bit space & right literal */
+ if (AOP_TYPE(IC_LEFT(ic)) == AOP_CRY &&
+ AOP_TYPE(IC_RIGHT(ic)) == AOP_LIT) {
+ /* if result in bit space */
+ if(AOP_TYPE(IC_RESULT(ic)) == AOP_CRY){
+ if(ulFromVal (AOP(IC_RIGHT(ic))->aopu.aop_lit) != 0L) {
+ emitpcode(POC_MOVLW, popGet(AOP(IC_RESULT(ic)),0));
+ if (!pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) )
+ emitpcode(POC_BTFSC, popGet(AOP(IC_LEFT(ic)),0));
+ emitpcode(POC_XORWF, popGet(AOP(IC_RESULT(ic)),0));
+ }
+ } else {
+ size = pic14_getDataSize(IC_RESULT(ic));
+ while (size--) {
+ MOVA(aopGet(AOP(IC_RIGHT(ic)),offset,FALSE,FALSE));
+ pic14_emitcode("addc","a,#00 ;%d",__LINE__);
+ aopPut(AOP(IC_RESULT(ic)),"a",offset++);
+ }
+ }
+ goto release ;
+ }
- } else {
+ /* if I can do an increment instead
+ of add then GOOD for ME */
+ if (genPlusIncr (ic) == TRUE)
+ goto release;
- emitpcode(POC_MOVFW, popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_BTFSC, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_INCFW, popGet(AOP(IC_LEFT(ic)),0));
- //emitpcode(POC_MOVWF, popGet(AOP(IC_RIGHT(ic)),0,FALSE,FALSE));
- emitMOVWF(IC_RIGHT(ic),0);
+ size = pic14_getDataSize(IC_RESULT(ic));
- pic14_emitcode("movf","%s,w", aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_RIGHT(ic))->aopu.aop_dir,
- AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode(" incf","%s,w", aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- pic14_emitcode("movwf","%s", aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
+ if(AOP(IC_RIGHT(ic))->type == AOP_LIT) {
+ /* Add a literal to something else */
+ unsigned lit = (unsigned) ulFromVal (AOP(IC_RIGHT(ic))->aopu.aop_lit);
+ DEBUGpic14_emitcode(";","adding lit to something. size %d",size);
+
+ genAddLit (ic, lit);
+ goto release;
+
+ } else if(AOP_TYPE(IC_RIGHT(ic)) == AOP_CRY) {
+
+ pic14_emitcode(";bitadd","right is bit: %s",aopGet(AOP(IC_RIGHT(ic)),0,FALSE,FALSE));
+ pic14_emitcode(";bitadd","left is bit: %s",aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
+ pic14_emitcode(";bitadd","result is bit: %s",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
+
+ /* here we are adding a bit to a char or int */
+ if(size == 1) {
+ if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
+ emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
+ emitpcode(POC_INCF , popGet(AOP(IC_RESULT(ic)),0));
+ } else {
+
+ emitpcode(POC_MOVFW , popGet(AOP(IC_LEFT(ic)),0));
+ emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
+ emitpcode(POC_INCFW , popGet(AOP(IC_LEFT(ic)),0));
+
+ if(AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) {
+ emitpcode(POC_ANDLW , popGetLit(1));
+ emitpcode(POC_BCF , popGet(AOP(IC_RESULT(ic)),0));
+ emitSKPZ;
+ emitpcode(POC_BSF , popGet(AOP(IC_RESULT(ic)),0));
+ } else {
+ emitpcode(POC_MOVWF , popGet(AOP(IC_RESULT(ic)),0));
+ }
+ }
+
+ } else {
+ int offset = 1;
+ DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
+ if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
+ emitCLRZ;
+ emitpcode(POC_BTFSC, popGet(AOP(IC_RIGHT(ic)),0));
+ emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),0));
+ } else {
+
+ emitpcode(POC_MOVFW, popGet(AOP(IC_LEFT(ic)),0));
+ emitpcode(POC_BTFSC, popGet(AOP(IC_RIGHT(ic)),0));
+ emitpcode(POC_INCFW, popGet(AOP(IC_LEFT(ic)),0));
+ emitMOVWF(IC_RIGHT(ic),0);
+ }
+
+ while(--size){
+ emitSKPZ;
+ emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),offset++));
+ }
+
+ }
+
+ } else {
+ DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
+
+ /* Add the first bytes */
+
+ if(strcmp(aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE),"a") == 0 ) {
+ emitpcode(POC_ADDFW, popGet(AOP(IC_RIGHT(ic)),0));
+ emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
+ } else {
+
+ emitpcode(POC_MOVFW,popGet(AOP(IC_RIGHT(ic)),0));
+
+ if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) )
+ emitpcode(POC_ADDWF, popGet(AOP(IC_LEFT(ic)),0));
+ else {
+ PIC_OPCODE poc = POC_ADDFW;
+
+ if (op_isLitLike (IC_LEFT (ic)))
+ poc = POC_ADDLW;
+ emitpcode(poc, popGetAddr(AOP(IC_LEFT(ic)),0,0));
+ emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
+ }
+ }
+
+ size = min( AOP_SIZE(IC_RESULT(ic)), AOP_SIZE(IC_RIGHT(ic))) - 1;
+ offset = 1;
+
+
+ if(size){
+ if (pic14_sameRegs(AOP(IC_RIGHT(ic)), AOP(IC_RESULT(ic)))) {
+ if (op_isLitLike (IC_LEFT(ic)))
+ {
+ while(size--){
+ emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
+ emitSKPNC;
+ emitpcode(POC_INCFSZW, popGet(AOP(IC_RIGHT(ic)),offset));
+ emitpcode(POC_ADDLW, popGetAddr(AOP(IC_LEFT(ic)),offset,0));
+ emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
+ offset++;
+ }
+ } else {
+ while(size--){
+ emitpcode(POC_MOVFW, popGet(AOP(IC_LEFT(ic)),offset));
+ emitSKPNC;
+ emitpcode(POC_INCFSZW, popGet(AOP(IC_LEFT(ic)),offset));
+ emitpcode(POC_ADDWF, popGet(AOP(IC_RESULT(ic)),offset));
+ offset++;
+ }
+ }
+ } else {
+ PIC_OPCODE poc = POC_MOVFW;
+ if (op_isLitLike (IC_LEFT(ic)))
+ poc = POC_MOVLW;
+ while(size--){
+ if (!pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
+ emitpcode(poc, popGetAddr(AOP(IC_LEFT(ic)),offset,0));
+ emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
+ }
+ emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
+ emitSKPNC;
+ emitpcode(POC_INCFSZW, popGet(AOP(IC_RIGHT(ic)),offset));
+ emitpcode(POC_ADDWF, popGet(AOP(IC_RESULT(ic)),offset));
+ offset++;
+ }
+ }
+ }
+ }
- }
-
- while(--size){
- emitSKPZ;
- emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),offset++));
- //pic14_emitcode(" incf","%s,f", aopGet(AOP(IC_RIGHT(ic)),offset++,FALSE,FALSE));
- }
-
- }
-
- } else {
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
-
- /* Add the first bytes */
-
- if(strcmp(aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE),"a") == 0 ) {
- emitpcode(POC_ADDFW, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
- } else {
-
- if ( AOP_TYPE(IC_LEFT(ic)) == AOP_ACC) {
- emitpcode(POC_ADDFW, popGet(AOP(IC_RIGHT(ic)),0));
- if ( AOP_TYPE(IC_RESULT(ic)) != AOP_ACC)
- emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
- } else {
+ if (AOP_SIZE(IC_RESULT(ic)) > AOP_SIZE(IC_RIGHT(ic))) {
+ int sign = !(SPEC_USIGN(getSpec(operandType(IC_LEFT(ic)))) |
+ SPEC_USIGN(getSpec(operandType(IC_RIGHT(ic)))) );
+
+
+ /* Need to extend result to higher bytes */
+ size = AOP_SIZE(IC_RESULT(ic)) - AOP_SIZE(IC_RIGHT(ic)) - 1;
+
+ /* First grab the carry from the lower bytes */
+ if (AOP_SIZE(IC_LEFT(ic)) > AOP_SIZE(IC_RIGHT(ic))) {
+ int leftsize = AOP_SIZE(IC_LEFT(ic)) - AOP_SIZE(IC_RIGHT(ic));
+ PIC_OPCODE poc = POC_MOVFW;
+ if (op_isLitLike (IC_LEFT(ic)))
+ poc = POC_MOVLW;
+ while(leftsize-- > 0) {
+ emitpcode(poc, popGetAddr(AOP(IC_LEFT(ic)),offset,0));
+ emitSKPNC;
+ emitpcode(POC_ADDLW, popGetLit(0x01));
+ emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
+ //emitSKPNC;
+ //emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),offset)); /* INCF does not update Carry! */
+ offset++;
+ if (size)
+ size--;
+ else
+ break;
+ }
+ } else {
+ emitpcode(POC_CLRF, popGet(AOP(IC_RESULT(ic)),offset));
+ emitpcode(POC_RLF, popGet(AOP(IC_RESULT(ic)),offset));
+ }
+
+
+ if(sign && offset > 0 && offset < AOP_SIZE(IC_RESULT(ic))) {
+ /* Now this is really horrid. Gotta check the sign of the addends and propogate
+ * to the result */
+
+ emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(IC_LEFT(ic)),offset-1,FALSE,FALSE),7,0));
+ emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),offset));
+ emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(IC_RIGHT(ic)),offset-1,FALSE,FALSE),7,0));
+ emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),offset));
+
+ /* if chars or ints or being signed extended to longs: */
+ if(size) {
+ emitpcode(POC_MOVLW, popGetLit(0));
+ emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(IC_RESULT(ic)),offset,FALSE,FALSE),7,0));
+ emitpcode(POC_MOVLW, popGetLit(0xff));
+ }
+ }
+
+ offset++;
+ while(size--) {
+
+ if(sign)
+ emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
+ else
+ emitpcode(POC_CLRF, popGet(AOP(IC_RESULT(ic)),offset));
+
+ offset++;
+ }
+ }
- emitpcode(POC_MOVFW,popGet(AOP(IC_RIGHT(ic)),0));
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) )
- emitpcode(POC_ADDWF, popGet(AOP(IC_LEFT(ic)),0));
- else {
- PIC_OPCODE poc = POC_ADDFW;
-
- if ((AOP_TYPE(IC_LEFT(ic)) == AOP_PCODE) && (
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_LITERAL) ||
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_IMMEDIATE)))
- poc = POC_ADDLW;
- emitpcode(poc, popGet(AOP(IC_LEFT(ic)),0));
- if ( AOP_TYPE(IC_RESULT(ic)) != AOP_ACC)
- emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
- }
- }
- }
-
- size = min( AOP_SIZE(IC_RESULT(ic)), AOP_SIZE(IC_RIGHT(ic))) - 1;
- offset = 1;
-
-
- if(size){
- if (pic14_sameRegs(AOP(IC_RIGHT(ic)), AOP(IC_RESULT(ic)))) {
- if ((AOP_TYPE(IC_LEFT(ic)) == AOP_PCODE) && (
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_LITERAL) ||
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_IMMEDIATE))) {
- while(size--){
- emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitSKPNC;
- emitpcode(POC_INCFSZW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitpcode(POC_ADDLW, popGet(AOP(IC_LEFT(ic)),offset));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- offset++;
- }
- } else {
- while(size--){
- emitpcode(POC_MOVFW, popGet(AOP(IC_LEFT(ic)),offset));
- emitSKPNC;
- emitpcode(POC_INCFSZW, popGet(AOP(IC_LEFT(ic)),offset));
- emitpcode(POC_ADDWF, popGet(AOP(IC_RESULT(ic)),offset));
- offset++;
- }
- }
- } else {
- PIC_OPCODE poc = POC_MOVFW;
- if ((AOP_TYPE(IC_LEFT(ic)) == AOP_PCODE) && (
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_LITERAL) ||
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_IMMEDIATE)))
- poc = POC_MOVLW;
- while(size--){
- if (!pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
- emitpcode(poc, popGet(AOP(IC_LEFT(ic)),offset));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- }
- emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitSKPNC;
- emitpcode(POC_INCFSZW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitpcode(POC_ADDWF, popGet(AOP(IC_RESULT(ic)),offset));
- offset++;
- }
- }
- }
- }
-
- if (AOP_SIZE(IC_RESULT(ic)) > AOP_SIZE(IC_RIGHT(ic))) {
- int sign = !(SPEC_USIGN(getSpec(operandType(IC_LEFT(ic)))) |
- SPEC_USIGN(getSpec(operandType(IC_RIGHT(ic)))) );
-
-
- /* Need to extend result to higher bytes */
- size = AOP_SIZE(IC_RESULT(ic)) - AOP_SIZE(IC_RIGHT(ic)) - 1;
-
- /* First grab the carry from the lower bytes */
- if (AOP_SIZE(IC_LEFT(ic)) > AOP_SIZE(IC_RIGHT(ic))) {
- int leftsize = AOP_SIZE(IC_LEFT(ic)) - AOP_SIZE(IC_RIGHT(ic));
- PIC_OPCODE poc = POC_MOVFW;
- if ((AOP_TYPE(IC_LEFT(ic)) == AOP_PCODE) && (
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_LITERAL) ||
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_IMMEDIATE)))
- poc = POC_MOVLW;
- while(leftsize-- > 0) {
- emitpcode(poc, popGet(AOP(IC_LEFT(ic)),offset));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- emitSKPNC;
- emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),offset));
- offset++;
- if (size)
- size--;
- else
- break;
- }
- } else {
- emitpcode(POC_CLRF, popGet(AOP(IC_RESULT(ic)),offset));
- emitpcode(POC_RLF, popGet(AOP(IC_RESULT(ic)),offset));
- }
-
-
- if(sign) {
- /* Now this is really horrid. Gotta check the sign of the addends and propogate
- * to the result */
-
- emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(IC_LEFT(ic)),offset-1,FALSE,FALSE),7,0));
- emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),offset));
- emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(IC_RIGHT(ic)),offset-1,FALSE,FALSE),7,0));
- emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),offset));
-
- /* if chars or ints or being signed extended to longs: */
- if(size) {
- emitpcode(POC_MOVLW, popGetLit(0));
- emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(IC_RESULT(ic)),offset,FALSE,FALSE),7,0));
- emitpcode(POC_MOVLW, popGetLit(0xff));
- }
- }
-
- offset++;
- while(size--) {
-
- if(sign)
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- else
- emitpcode(POC_CLRF, popGet(AOP(IC_RESULT(ic)),offset));
-
- offset++;
- }
- }
-
-
- //adjustArithmeticResult(ic);
-
- release:
- freeAsmop(IC_LEFT(ic),NULL,ic,(RESULTONSTACK(ic) ? FALSE : TRUE));
- freeAsmop(IC_RIGHT(ic),NULL,ic,(RESULTONSTACK(ic) ? FALSE : TRUE));
- freeAsmop(IC_RESULT(ic),NULL,ic,TRUE);
-}
-
-/*-----------------------------------------------------------------*/
-/* genMinusDec :- does subtraction with decrement if possible */
-/*-----------------------------------------------------------------*/
-bool genMinusDec (iCode *ic)
-{
- unsigned int icount ;
- unsigned int size = pic14_getDataSize(IC_RESULT(ic));
-
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
- /* will try to generate an increment */
- /* if the right side is not a literal
- we cannot */
- if ((AOP_TYPE(IC_RIGHT(ic)) != AOP_LIT) ||
- (AOP_TYPE(IC_LEFT(ic)) == AOP_CRY) ||
- (AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) )
- return FALSE ;
-
- DEBUGpic14_emitcode ("; lit val","%d",(unsigned int) floatFromVal (AOP(IC_RIGHT(ic))->aopu.aop_lit));
-
- /* if the literal value of the right hand side
- is greater than 4 then it is not worth it */
- if ((icount = (unsigned int) floatFromVal (AOP(IC_RIGHT(ic))->aopu.aop_lit)) > 2)
- return FALSE ;
-
- /* if decrement 16 bits in register */
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) &&
- (size > 1) &&
- (icount == 1)) {
-
- if(size == 2) {
- emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),LSB));
- emitpcode(POC_INCFSZW, popGet(AOP(IC_RESULT(ic)),LSB));
- emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),MSB16));
- emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),MSB16));
-
- pic14_emitcode("decf","%s,f",aopGet(AOP(IC_RESULT(ic)),LSB,FALSE,FALSE));
- pic14_emitcode("incfsz","%s,w",aopGet(AOP(IC_RESULT(ic)),LSB,FALSE,FALSE));
- pic14_emitcode(" decf","%s,f",aopGet(AOP(IC_RESULT(ic)),MSB16,FALSE,FALSE));
- } else {
- /* size is 3 or 4 */
- emitpcode(POC_MOVLW, popGetLit(0xff));
- emitpcode(POC_ADDWF, popGet(AOP(IC_RESULT(ic)),LSB));
- emitSKPNC;
- emitpcode(POC_ADDWF, popGet(AOP(IC_RESULT(ic)),MSB16));
- emitSKPNC;
- emitpcode(POC_ADDWF, popGet(AOP(IC_RESULT(ic)),MSB24));
-
- pic14_emitcode("movlw","0xff");
- pic14_emitcode("addwf","%s,f",aopGet(AOP(IC_RESULT(ic)),LSB,FALSE,FALSE));
-
- emitSKPNC;
- pic14_emitcode("addwf","%s,f",aopGet(AOP(IC_RESULT(ic)),MSB16,FALSE,FALSE));
- emitSKPNC;
- pic14_emitcode("addwf","%s,f",aopGet(AOP(IC_RESULT(ic)),MSB24,FALSE,FALSE));
-
- if(size > 3) {
- emitSKPNC;
- emitpcode(POC_ADDWF, popGet(AOP(IC_RESULT(ic)),MSB32));
+ //adjustArithmeticResult(ic);
- pic14_emitcode("skpnc","");
- emitSKPNC;
- pic14_emitcode("addwf","%s,f",aopGet(AOP(IC_RESULT(ic)),MSB32,FALSE,FALSE));
- }
-
- }
-
- return TRUE;
-
- }
-
- /* if the sizes are greater than 1 then we cannot */
- if (AOP_SIZE(IC_RESULT(ic)) > 1 ||
- AOP_SIZE(IC_LEFT(ic)) > 1 )
- return FALSE ;
-
- /* we can if the aops of the left & result match or
- if they are in registers and the registers are the
- same */
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic)))) {
-
- while (icount--)
- emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),0));
-
- //pic14_emitcode ("decf","%s,f",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
-
- return TRUE ;
- }
-
- DEBUGpic14_emitcode ("; returning"," result=%s, left=%s",
- aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE),
- aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- if(size==1) {
-
- pic14_emitcode("decf","%s,w",aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- pic14_emitcode("movwf","%s",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
-
- emitpcode(POC_DECFW, popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),0));
-
- return TRUE;
- }
-
- return FALSE ;
+release:
+ freeAsmop(IC_LEFT(ic),NULL,ic,(RESULTONSTACK(ic) ? FALSE : TRUE));
+ freeAsmop(IC_RIGHT(ic),NULL,ic,(RESULTONSTACK(ic) ? FALSE : TRUE));
+ freeAsmop(IC_RESULT(ic),NULL,ic,TRUE);
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
void addSign(operand *result, int offset, int sign)
{
- int size = (pic14_getDataSize(result) - offset);
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
-
- if(size > 0){
- if(sign && offset) {
-
- if(size == 1) {
- emitpcode(POC_CLRF,popGet(AOP(result),offset));
- emitpcode(POC_BTFSC,newpCodeOpBit(aopGet(AOP(result),offset-1,FALSE,FALSE),7,0));
- emitpcode(POC_DECF, popGet(AOP(result),offset));
- } else {
-
- emitpcode(POC_MOVLW, popGetLit(0));
- emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(result),offset-1,FALSE,FALSE),7,0));
- emitpcode(POC_MOVLW, popGetLit(0xff));
- while(size--)
- emitpcode(POC_MOVWF, popGet(AOP(result),size));
+ int size = (pic14_getDataSize(result) - offset);
+ DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
+ FENTRY;
- }
- } else
- while(size--)
- emitpcode(POC_CLRF,popGet(AOP(result),offset++));
- }
-}
-
-/*-----------------------------------------------------------------*/
-/* genMinusBits - generates code for subtraction of two bits */
-/*-----------------------------------------------------------------*/
-void genMinusBits (iCode *ic)
-{
- symbol *lbl = newiTempLabel(NULL);
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
- if (AOP_TYPE(IC_RESULT(ic)) == AOP_CRY){
- pic14_emitcode("mov","c,%s",AOP(IC_LEFT(ic))->aopu.aop_dir);
- pic14_emitcode("jnb","%s,%05d_DS_",AOP(IC_RIGHT(ic))->aopu.aop_dir,(lbl->key+100));
- pic14_emitcode("cpl","c");
- pic14_emitcode("","%05d_DS_:",(lbl->key+100));
- pic14_outBitC(IC_RESULT(ic));
- }
- else{
- pic14_emitcode("mov","c,%s",AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode("subb","a,acc");
- pic14_emitcode("jnb","%s,%05d_DS_",AOP(IC_LEFT(ic))->aopu.aop_dir,(lbl->key+100));
- pic14_emitcode("inc","a");
- pic14_emitcode("","%05d_DS_:",(lbl->key+100));
- aopPut(AOP(IC_RESULT(ic)),"a",0);
- addSign(IC_RESULT(ic), MSB16, SPEC_USIGN(getSpec(operandType(IC_RESULT(ic)))));
- }
+ if(size > 0){
+ if(sign && offset) {
+
+ if(size == 1) {
+ emitpcode(POC_CLRF,popGet(AOP(result),offset));
+ emitpcode(POC_BTFSC,newpCodeOpBit(aopGet(AOP(result),offset-1,FALSE,FALSE),7,0));
+ emitpcode(POC_DECF, popGet(AOP(result),offset));
+ } else {
+
+ emitpcode(POC_MOVLW, popGetLit(0));
+ emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(result),offset-1,FALSE,FALSE),7,0));
+ emitpcode(POC_MOVLW, popGetLit(0xff));
+ while(size--)
+ emitpcode(POC_MOVWF, popGet(AOP(result),offset+size));
+ }
+ } else
+ while(size--)
+ emitpcode(POC_CLRF,popGet(AOP(result),offset++));
+ }
}
/*-----------------------------------------------------------------*/
/*-----------------------------------------------------------------*/
void genMinus (iCode *ic)
{
- int size, offset = 0, same=0;
- unsigned long lit = 0L;
-
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
- aopOp (IC_LEFT(ic),ic,FALSE);
- aopOp (IC_RIGHT(ic),ic,FALSE);
- aopOp (IC_RESULT(ic),ic,TRUE);
-
- if (AOP_TYPE(IC_RESULT(ic)) == AOP_CRY &&
- AOP_TYPE(IC_RIGHT(ic)) == AOP_LIT) {
- operand *t = IC_RIGHT(ic);
- IC_RIGHT(ic) = IC_LEFT(ic);
- IC_LEFT(ic) = t;
- }
-
- DEBUGpic14_emitcode ("; ","result %s, left %s, right %s",
- AopType(AOP_TYPE(IC_RESULT(ic))),
- AopType(AOP_TYPE(IC_LEFT(ic))),
- AopType(AOP_TYPE(IC_RIGHT(ic))));
-
- /* special cases :- */
- /* if both left & right are in bit space */
- if (AOP_TYPE(IC_LEFT(ic)) == AOP_CRY &&
- AOP_TYPE(IC_RIGHT(ic)) == AOP_CRY) {
- genPlusBits (ic);
- goto release ;
- }
-
- /* if I can do an decrement instead
- of subtract then GOOD for ME */
- // if (genMinusDec (ic) == TRUE)
- // goto release;
-
- size = pic14_getDataSize(IC_RESULT(ic));
- same = pic14_sameRegs(AOP(IC_RIGHT(ic)), AOP(IC_RESULT(ic)));
-
- if(AOP(IC_RIGHT(ic))->type == AOP_LIT) {
- /* Add a literal to something else */
-
- lit = (unsigned long)floatFromVal(AOP(IC_RIGHT(ic))->aopu.aop_lit);
- lit = - (long)lit;
-
- genAddLit ( ic, lit);
-
-#if 0
- /* add the first byte: */
- pic14_emitcode("movlw","0x%x", lit & 0xff);
- pic14_emitcode("addwf","%s,f", aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
- emitpcode(POC_ADDWF, popGet(AOP(IC_LEFT(ic)),0));
-
-
- offset = 1;
- size--;
-
- while(size-- > 0) {
-
- lit >>= 8;
-
- if(lit & 0xff) {
-
- if((lit & 0xff) == 0xff) {
- emitpcode(POC_MOVLW, popGetLit(0xff));
- emitSKPC;
- emitpcode(POC_ADDWF, popGet(AOP(IC_LEFT(ic)),offset));
- } else {
- emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
- emitSKPNC;
- emitpcode(POC_MOVLW, popGetLit((lit+1) & 0xff));
- emitpcode(POC_ADDWF, popGet(AOP(IC_LEFT(ic)),offset));
- }
-
- } else {
- /* do the rlf known zero trick here */
- emitpcode(POC_MOVLW, popGetLit(1));
- emitSKPNC;
- emitpcode(POC_ADDWF, popGet(AOP(IC_LEFT(ic)),offset));
- }
- offset++;
- }
-#endif
- } else if(AOP_TYPE(IC_RIGHT(ic)) == AOP_CRY) {
- // bit subtraction
-
- pic14_emitcode(";bitsub","right is bit: %s",aopGet(AOP(IC_RIGHT(ic)),0,FALSE,FALSE));
- pic14_emitcode(";bitsub","left is bit: %s",aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE));
- pic14_emitcode(";bitsub","result is bit: %s",aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
-
- /* here we are subtracting a bit from a char or int */
- if(size == 1) {
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
-
- emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_DECF , popGet(AOP(IC_RESULT(ic)),0));
-
- pic14_emitcode("btfsc","(%s >> 3), (%s & 7)",
- AOP(IC_RIGHT(ic))->aopu.aop_dir,
- AOP(IC_RIGHT(ic))->aopu.aop_dir);
- pic14_emitcode(" incf","%s,f", aopGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
- } else {
-
- if(AOP_TYPE(IC_LEFT(ic)) == AOP_ACC) {
- emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_XORLW , popGetLit(1));
- }else if( (AOP_TYPE(IC_LEFT(ic)) == AOP_IMMD) ||
- (AOP_TYPE(IC_LEFT(ic)) == AOP_LIT) ) {
-
- lit = (unsigned long)floatFromVal(AOP(IC_LEFT(ic))->aopu.aop_lit);
-
- if(AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) {
- if (pic14_sameRegs(AOP(IC_RIGHT(ic)), AOP(IC_RESULT(ic))) ) {
- if(lit & 1) {
- emitpcode(POC_MOVLW , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_XORWF , popGet(AOP(IC_RIGHT(ic)),0));
- }
- }else{
- emitpcode(POC_BCF , popGet(AOP(IC_RESULT(ic)),0));
- if(lit & 1)
- emitpcode(POC_BTFSS , popGet(AOP(IC_RIGHT(ic)),0));
- else
- emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_BSF , popGet(AOP(IC_RESULT(ic)),0));
- }
- goto release;
- } else {
- emitpcode(POC_MOVLW , popGetLit(lit & 0xff));
- emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_MOVLW , popGetLit((lit-1) & 0xff));
- emitpcode(POC_MOVWF , popGet(AOP(IC_RESULT(ic)),0));
-
- }
-
- } else {
- emitpcode(POC_MOVFW , popGet(AOP(IC_LEFT(ic)),0));
- emitpcode(POC_BTFSC , popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_DECFW , popGet(AOP(IC_LEFT(ic)),0));
- }
+ int size, offset = 0, same=0;
+ unsigned long lit = 0L;
+ int isLit;
+ symbol *lbl_comm, *lbl_next;
+ asmop *left, *right, *result;
+
+ FENTRY;
+ DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
+ aopOp (IC_LEFT(ic),ic,FALSE);
+ aopOp (IC_RIGHT(ic),ic,FALSE);
+ aopOp (IC_RESULT(ic),ic,TRUE);
- if(AOP_TYPE(IC_RESULT(ic)) != AOP_ACC) {
-
- emitpcode(POC_MOVWF , popGet(AOP(IC_RESULT(ic)),0));
-
- } else {
- emitpcode(POC_ANDLW , popGetLit(1));
- /*
- emitpcode(POC_BCF , popGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
- emitSKPZ;
- emitpcode(POC_BSF , popGet(AOP(IC_RESULT(ic)),0,FALSE,FALSE));
- */
+ if (AOP_TYPE(IC_RESULT(ic)) == AOP_CRY &&
+ AOP_TYPE(IC_RIGHT(ic)) == AOP_LIT) {
+ operand *t = IC_RIGHT(ic);
+ IC_RIGHT(ic) = IC_LEFT(ic);
+ IC_LEFT(ic) = t;
}
- }
-
- }
- } else if(// (AOP_TYPE(IC_LEFT(ic)) == AOP_IMMD) ||
- (AOP(IC_LEFT(ic))->type == AOP_LIT) &&
- (AOP_TYPE(IC_RIGHT(ic)) != AOP_ACC)) {
-
- lit = (unsigned long)floatFromVal(AOP(IC_LEFT(ic))->aopu.aop_lit);
- DEBUGpic14_emitcode ("; left is lit","line %d result %s, left %s, right %s",__LINE__,
- AopType(AOP_TYPE(IC_RESULT(ic))),
- AopType(AOP_TYPE(IC_LEFT(ic))),
- AopType(AOP_TYPE(IC_RIGHT(ic))));
-
-
- if( (size == 1) && ((lit & 0xff) == 0) ) {
- /* res = 0 - right */
- if (pic14_sameRegs(AOP(IC_RIGHT(ic)), AOP(IC_RESULT(ic))) ) {
- emitpcode(POC_COMF, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_INCF, popGet(AOP(IC_RIGHT(ic)),0));
- } else {
- emitpcode(POC_COMFW, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),0));
- emitpcode(POC_INCF, popGet(AOP(IC_RESULT(ic)),0));
- }
- goto release;
- }
-
- emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_SUBLW, popGetLit(lit & 0xff));
- emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
-
-
- offset = 1;
- while(--size) {
- lit >>= 8;
-
- if(size == 1) {
- /* This is the last byte in a multibyte subtraction
- * There are a couple of tricks we can do by not worrying about
- * propogating the carry */
- if(lit == 0xff) {
- /* 0xff - x == ~x */
- if(same) {
- emitpcode(POC_COMF, popGet(AOP(IC_RESULT(ic)),offset));
- emitSKPC;
- emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),offset));
- } else {
- emitpcode(POC_COMFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- emitSKPC;
- emitpcode(POC_DECF, popGet(AOP(IC_RESULT(ic)),offset));
- }
- } else {
- emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitSKPC;
- emitpcode(POC_INCFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitpcode(POC_SUBLW, popGetLit(lit & 0xff));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- }
-
- goto release;
- }
-
- if(same) {
-
- if(lit & 0xff) {
- emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
- emitSKPC;
- emitpcode(POC_MOVLW, popGetLit((lit & 0xff)-1));
- emitpcode(POC_SUBWF, popGet(AOP(IC_RESULT(ic)),offset));
- } else {
- emitSKPNC;
- emitpcode(POC_SUBWF, popGet(AOP(IC_RESULT(ic)),offset));
-
- }
- } else {
+ DEBUGpic14_emitcode ("; ","result %s, left %s, right %s",
+ AopType(AOP_TYPE(IC_RESULT(ic))),
+ AopType(AOP_TYPE(IC_LEFT(ic))),
+ AopType(AOP_TYPE(IC_RIGHT(ic))));
- if(lit & 0xff) {
- emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- } else
- emitpcode(POC_CLRF, popGet(AOP(IC_RESULT(ic)),offset));
+ left = AOP(IC_LEFT(ic));
+ right = AOP(IC_RIGHT(ic));
+ result = AOP(IC_RESULT(ic));
- emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitSKPC;
- emitpcode(POC_INCFSZW,popGet(AOP(IC_RIGHT(ic)),offset));
- emitpcode(POC_SUBWF, popGet(AOP(IC_RESULT(ic)),offset));
- }
- }
-
-
- } else {
-
- DEBUGpic14_emitcode ("; ","line %d result %s, left %s, right %s",__LINE__,
- AopType(AOP_TYPE(IC_RESULT(ic))),
- AopType(AOP_TYPE(IC_LEFT(ic))),
- AopType(AOP_TYPE(IC_RIGHT(ic))));
-
- if(strcmp(aopGet(AOP(IC_LEFT(ic)),0,FALSE,FALSE),"a") == 0 ) {
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
- emitpcode(POC_SUBFW, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_SUBLW, popGetLit(0));
- emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
- } else {
-
- if ( AOP_TYPE(IC_LEFT(ic)) == AOP_ACC) {
- emitpcode(POC_SUBFW, popGet(AOP(IC_RIGHT(ic)),0));
- emitpcode(POC_SUBLW, popGetLit(0));
- if ( AOP_TYPE(IC_RESULT(ic)) != AOP_ACC)
- emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
- } else {
-
- DEBUGpic14_emitcode ("; ***","%s %d",__FUNCTION__,__LINE__);
- if(AOP_TYPE(IC_RIGHT(ic)) != AOP_ACC)
- emitpcode(POC_MOVFW,popGet(AOP(IC_RIGHT(ic)),0));
-
- if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) )
- emitpcode(POC_SUBWF, popGet(AOP(IC_LEFT(ic)),0));
- else {
- if( (AOP_TYPE(IC_LEFT(ic)) == AOP_IMMD) ||
- (AOP_TYPE(IC_LEFT(ic)) == AOP_LIT) ) {
- emitpcode(POC_SUBLW, popGet(AOP(IC_LEFT(ic)),0));
- } else {
- emitpcode(POC_SUBFW, popGet(AOP(IC_LEFT(ic)),0));
- }
- if ( AOP_TYPE(IC_RESULT(ic)) != AOP_ACC) {
- if ( AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) {
- emitpcode(POC_BCF , popGet(AOP(IC_RESULT(ic)),0));
- emitSKPZ;
- emitpcode(POC_BSF , popGet(AOP(IC_RESULT(ic)),0));
- }else
- emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
- }
- }
- }
- }
-
- size = min( AOP_SIZE(IC_RESULT(ic)), AOP_SIZE(IC_RIGHT(ic))) - 1;
- offset = 1;
-
- if(size){
- if (pic14_sameRegs(AOP(IC_RIGHT(ic)), AOP(IC_RESULT(ic)))) {
- if ((AOP_TYPE(IC_LEFT(ic)) == AOP_PCODE) && (
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_LITERAL) ||
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_IMMEDIATE))) {
- while(size--){
- emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitSKPC;
- emitpcode(POC_INCFSZW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitpcode(POC_SUBLW, popGet(AOP(IC_LEFT(ic)),offset));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- offset++;
- }
+ size = pic14_getDataSize(IC_RESULT(ic));
+ same = pic14_sameRegs(right, result);
+
+ if((AOP_TYPE(IC_LEFT(ic)) != AOP_LIT)
+ && (pic14_getDataSize(IC_LEFT(ic)) < size))
+ {
+ fprintf(stderr, "%s:%d(%s):WARNING: left operand too short for result\n",
+ ic->filename, ic->lineno, __FUNCTION__);
+ } // if
+ if((AOP_TYPE(IC_RIGHT(ic)) != AOP_LIT)
+ && (pic14_getDataSize(IC_RIGHT(ic)) < size))
+ {
+ fprintf(stderr, "%s:%d(%s):WARNING: right operand too short for result\n",
+ ic->filename, ic->lineno, __FUNCTION__ );
+ } // if
+
+ if(AOP_TYPE(IC_RIGHT(ic)) == AOP_LIT) {
+ /* Add a literal to something else */
+
+ lit = ulFromVal(right->aopu.aop_lit);
+ lit = -(long)lit;
+
+ genAddLit(ic, lit);
+
+ } else if(AOP_TYPE(IC_RIGHT(ic)) == AOP_CRY) {
+ // bit subtraction
+
+ pic14_emitcode(";bitsub","right is bit: %s",aopGet(right,0,FALSE,FALSE));
+ pic14_emitcode(";bitsub","left is bit: %s",aopGet(left,0,FALSE,FALSE));
+ pic14_emitcode(";bitsub","result is bit: %s",aopGet(result,0,FALSE,FALSE));
+
+ /* here we are subtracting a bit from a char or int */
+ if(size == 1) {
+ if(pic14_sameRegs(left, result)) {
+
+ emitpcode(POC_BTFSC, popGet(right, 0));
+ emitpcode(POC_DECF , popGet(result, 0));
+
+ } else {
+
+ if( (AOP_TYPE(IC_LEFT(ic)) == AOP_IMMD) ||
+ (AOP_TYPE(IC_LEFT(ic)) == AOP_LIT) ) {
+ /*
+ * result = literal - bit
+ *
+ * XXX: probably fails for AOP_IMMDs!
+ */
+
+ lit = ulFromVal (left->aopu.aop_lit);
+
+ if(AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) {
+ if(pic14_sameRegs(right, result)) {
+ if(lit & 1) {
+ emitpcode(POC_MOVLW, popGet(right, 0));
+ emitpcode(POC_XORWF, popGet(result, 0));
+ }
+ } else {
+ emitpcode(POC_BCF, popGet(result, 0));
+ if(lit & 1)
+ emitpcode(POC_BTFSS, popGet(right, 0));
+ else
+ emitpcode(POC_BTFSC, popGet(right, 0));
+ emitpcode(POC_BSF, popGet(result, 0));
+ }
+ goto release;
+ } else {
+ emitpcode(POC_MOVLW, popGetLit(lit & 0xff));
+ emitpcode(POC_BTFSC, popGet(right, 0));
+ emitpcode(POC_MOVLW, popGetLit((lit-1) & 0xff));
+ emitpcode(POC_MOVWF, popGet(result, 0));
+ }
+
+ } else {
+ // result = register - bit
+ // XXX: Fails for lit-like left operands
+ emitpcode(POC_MOVFW, popGet(left, 0));
+ emitpcode(POC_BTFSC, popGet(right, 0));
+ emitpcode(POC_DECFW, popGet(left, 0));
+ emitpcode(POC_MOVWF, popGet(result, 0));
+ }
+ }
+ } else {
+ fprintf(stderr, "WARNING: subtracting bit from multi-byte operands is incomplete.\n");
+ //exit(EXIT_FAILURE);
+ } // if
} else {
- while(size--){
- emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitSKPC;
- emitpcode(POC_INCFSZW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitpcode(POC_SUBFW, popGet(AOP(IC_LEFT(ic)),offset));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- offset++;
- }
- }
- } else {
- PIC_OPCODE poc = POC_MOVFW;
- if ((AOP_TYPE(IC_LEFT(ic)) == AOP_PCODE) && (
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_LITERAL) ||
- (AOP(IC_LEFT(ic))->aopu.pcop->type == PO_IMMEDIATE)))
- poc = POC_MOVLW;
- while(size--){
- if (!pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
- emitpcode(POC_MOVFW, popGet(AOP(IC_LEFT(ic)),offset));
- emitpcode(POC_MOVWF, popGet(AOP(IC_RESULT(ic)),offset));
- }
- emitpcode(POC_MOVFW, popGet(AOP(IC_RIGHT(ic)),offset));
- emitSKPC;
- emitpcode(POC_INCFSZW,popGet(AOP(IC_RIGHT(ic)),offset));
- emitpcode(POC_SUBWF, popGet(AOP(IC_RESULT(ic)),offset));
- offset++;
- }
- }
- }
- }
-
- // adjustArithmeticResult(ic);
-
-release:
- freeAsmop(IC_LEFT(ic),NULL,ic,(RESULTONSTACK(ic) ? FALSE : TRUE));
- freeAsmop(IC_RIGHT(ic),NULL,ic,(RESULTONSTACK(ic) ? FALSE : TRUE));
- freeAsmop(IC_RESULT(ic),NULL,ic,TRUE);
-}
-/*-----------------------------------------------------------------*
-* genUMult8XLit_16 - unsigned multiplication of two 8-bit numbers.
-*
-*
-*-----------------------------------------------------------------*/
-void genUMult8XLit_16 (operand *left,
- operand *right,
- operand *result,
- pCodeOpReg *result_hi)
-
-{
-
- unsigned int lit;
- unsigned int i,have_first_bit;
- int same;
- pCodeOp *temp;
-
- if (AOP_TYPE(right) != AOP_LIT){
- fprintf(stderr,"%s %d - right operand is not a literal\n",__FILE__,__LINE__);
- exit(1);
- }
-
-
- if(!result_hi) {
- result_hi = PCOR(popGet(AOP(result),1));
- }
-
- lit = (unsigned int)floatFromVal(AOP(right)->aopu.aop_lit);
- lit &= 0xff;
- pic14_emitcode(";","Unrolled 8 X 8 multiplication");
-
- same = pic14_sameRegs(AOP(left), AOP(result));
-
- if(same) {
- switch(lit) {
- case 0:
- emitpcode(POC_CLRF, popGet(AOP(left),0));
- return;
- case 2:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- return;
- case 3:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- return;
- case 4:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- return;
- case 5:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 2*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 3*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 5*F
- return;
- case 6:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- return;
- case 7:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 2*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 3*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 5*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 7*F
- return;
- case 8:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 2*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 3*F
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 5*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 8*F
- return;
- case 9:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- return;
- case 10:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 2*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 3*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 5*F
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- return;
- case 11:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 2*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 3*F
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 5*F
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 8*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 11*F
- return;
- case 12:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- return;
- case 13:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 2*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 3*F
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 5*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 8*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 13*F
- return;
- case 14:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 2*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 3*F
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 5*F
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 8*F
- emitpcode(POC_ADDFW, popGet(AOP(left),0)); // W = 11*F
- emitpcode(POC_ADDWF, popGet(AOP(left),0)); // F = 14*F
- return;
- case 15:
- temp = popGetTempReg();
- if(!temp) {
- fprintf(stderr,"ERROR: unable to allocate register. %s:%d\n",__FUNCTION__,__LINE__);
- exit(1);
- }
- emitpcode(POC_SWAPFW, popGet(AOP(left),0));
- emitpcode(POC_MOVWF, temp);
- emitpcode(POC_ANDLW, popGetLit(0xf0));
- emitpcode(POC_MOVWF, popGet(AOP(left),0));
- emitpcode(POC_SWAPFW, temp);
- emitpcode(POC_SUBWF, popGet(AOP(left),0));
- popReleaseTempReg(temp);
- return;
- case 16:
- emitpcode(POC_SWAPFW, popGet(AOP(left),0));
- emitpcode(POC_ANDLW, popGetLit(0xf0));
- emitpcode(POC_MOVWF, popGet(AOP(left),0));
- return;
- case 17:
- emitpcode(POC_SWAPFW, popGet(AOP(left),0));
- emitpcode(POC_ANDLW, popGetLit(0xf0));
- emitpcode(POC_ADDWF, popGet(AOP(left),0));
- return;
- case 32:
- emitpcode(POC_SWAPF, popGet(AOP(left),0));
- emitpcode(POC_RLFW, popGet(AOP(left),0));
- emitpcode(POC_ANDLW, popGetLit(0xe0));
- emitpcode(POC_MOVWF, popGet(AOP(left),0));
- return;
- case 64:
- emitpcode(POC_SWAPF, popGet(AOP(left),0));
- emitpcode(POC_RLF, popGet(AOP(left),0));
- emitpcode(POC_RLFW, popGet(AOP(left),0));
- emitpcode(POC_ANDLW, popGetLit(0xc0));
- emitpcode(POC_MOVWF, popGet(AOP(left),0));
- return;
- case 128:
- emitpcode(POC_RRFW, popGet(AOP(left),0));
- emitpcode(POC_CLRF, popGet(AOP(left),0));
- emitpcode(POC_RRF, popGet(AOP(left),0));
- return;
-
- }
- } else {
-
- switch(lit) {
- case 0:
- emitpcode(POC_CLRF, popGet(AOP(result),0));
- emitpcode(POC_CLRF, popCopyReg(result_hi));
- return;
- case 2:
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_MOVWF, popGet(AOP(result),0));
- emitpcode(POC_ADDWF, popGet(AOP(result),0));
- emitpcode(POC_CLRF, popCopyReg(result_hi));
- emitpcode(POC_RLF, popCopyReg(result_hi));
- return;
- }
-
- }
-
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_CLRF, popGet(AOP(result),0));
- emitpcode(POC_CLRF, popCopyReg(result_hi));
-
- have_first_bit = 0;
- for(i=0; i<8; i++) {
-
- if(lit & 1) {
- emitpcode(POC_ADDWF, popCopyReg(result_hi));
- have_first_bit = 1;
- }
-
- if(have_first_bit) {
- emitpcode(POC_RRF, popCopyReg(result_hi));
- emitpcode(POC_RRF, popGet(AOP(result),0));
- }
-
- lit >>= 1;
- }
-
-}
+ /*
+ * RIGHT is not a literal and not a bit operand,
+ * LEFT is unknown (register, literal, bit, ...)
+ */
+ lit = 0;
+ isLit = 0;
-/*-----------------------------------------------------------------*
-* genUMult8X8_16 - unsigned multiplication of two 8-bit numbers.
-*
-*
-*-----------------------------------------------------------------*/
-void genUMult8X8_16 (operand *left,
- operand *right,
- operand *result,
- pCodeOpReg *result_hi)
-
-{
-
- int i;
- int looped = 1;
-
- if(!result_hi) {
- result_hi = PCOR(popGet(AOP(result),1));
- }
-
- if (AOP_TYPE(right) == AOP_LIT) {
- genUMult8XLit_16(left,right,result,result_hi);
- return;
- }
-
- if(!looped) {
- pic14_emitcode(";","Unrolled 8 X 8 multiplication");
-
- emitpcode(POC_MOVFW, popGet(AOP(right),0));
- emitpcode(POC_CLRF, popGet(AOP(result),0));
- emitpcode(POC_CLRF, popCopyReg(result_hi));
- emitCLRC;
-
- for(i=0; i<8; i++) {
- emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(left),0,FALSE,FALSE),i,0));
- emitpcode(POC_ADDWF, popCopyReg(result_hi));
- emitpcode(POC_RRF, popCopyReg(result_hi));
- emitpcode(POC_RRF, popGet(AOP(result),0));
- }
-
-
- /*
- Here's another version that does the same thing and takes the
- same number of instructions. The one above is slightly better
- because the entry instructions have a higher probability of
- being optimized out.
- */
- /*
- emitpcode(POC_CLRF, popCopyReg(result_hi));
- emitpcode(POC_RRFW, popGet(AOP(left),0));
- emitpcode(POC_MOVWF, popGet(AOP(result),0));
- emitpcode(POC_MOVFW, popGet(AOP(right),0));
-
- for(i=0; i<8; i++) {
- emitSKPNC;
- emitpcode(POC_ADDWF, popCopyReg(result_hi));
- emitpcode(POC_RRF, popCopyReg(result_hi));
- emitpcode(POC_RRF, popGet(AOP(result),0));
- }
- */
-
- } else {
- symbol *tlbl = newiTempLabel(NULL);
- pCodeOp *temp;
-
-
- pic14_emitcode(";","Looped 8 X 8 multiplication");
-
- emitpcode(POC_CLRF, popGet(AOP(result),0));
- emitpcode(POC_CLRF, popCopyReg(result_hi));
-
- emitpcode(POC_BSF, newpCodeOpBit(aopGet(AOP(result),0,FALSE,FALSE),7,0));
-
- emitpcode(POC_MOVFW, popGet(AOP(right),0));
-
- temp = popGetTempReg();
- emitpcode(POC_MOVWF, popCopyReg(PCOR(temp)));
-
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
-
- emitpLabel(tlbl->key);
-
- emitpcode(POC_RRF, popCopyReg(PCOR(temp)));
- emitSKPNC;
- emitpcode(POC_ADDWF, popCopyReg(result_hi));
-
- emitpcode(POC_RRF, popCopyReg(result_hi));
- emitpcode(POC_RRF, popGet(AOP(result),0));
-
- emitSKPC;
- emitpcode(POC_GOTO, popGetLabel(tlbl->key));
-
- popReleaseTempReg(temp);
-
- }
-}
+ if(AOP_TYPE(IC_LEFT(ic)) == AOP_LIT) {
+ lit = ulFromVal (left->aopu.aop_lit);
+ isLit = 1;
+ DEBUGpic14_emitcode ("; left is lit","line %d result %s, left %s, right %s",__LINE__,
+ AopType(AOP_TYPE(IC_RESULT(ic))),
+ AopType(AOP_TYPE(IC_LEFT(ic))),
+ AopType(AOP_TYPE(IC_RIGHT(ic))));
+ } // if
-/*-----------------------------------------------------------------*
-* genSMult8X8_16 - signed multiplication of two 8-bit numbers
-*
-* this routine will call the unsigned multiply routine and then
-* post-fix the sign bit.
-*-----------------------------------------------------------------*/
-void genSMult8X8_16 (operand *left,
- operand *right,
- operand *result,
- pCodeOpReg *result_hi)
-{
-
- if(!result_hi) {
- result_hi = PCOR(popGet(AOP(result),1));
- }
-
- genUMult8X8_16(left,right,result,result_hi);
-
- emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(left),0,FALSE,FALSE),7,0));
- emitpcode(POC_SUBWF, popCopyReg(result_hi));
- emitpcode(POC_MOVFW, popGet(AOP(left),0));
- emitpcode(POC_BTFSC, newpCodeOpBit(aopGet(AOP(right),0,FALSE,FALSE),7,0));
- emitpcode(POC_SUBWF, popGet(AOP(result),1));
-
-}
-/*-----------------------------------------------------------------*
-* genMult8X8_8 - multiplication of two 8-bit numbers
-*
-* this routine will call the unsigned multiply 8X8=>16 routine and
-* then throw away the high byte of the result.
-*
-*-----------------------------------------------------------------*/
-void genMult8X8_8 (operand *left,
- operand *right,
- operand *result)
-{
- pCodeOp *result_hi = popGetTempReg();
-
- if (AOP_TYPE(right) == AOP_LIT)
- genUMult8XLit_16(left,right,result,PCOR(result_hi));
- else
- genUMult8X8_16(left,right,result,PCOR(result_hi));
-
- popReleaseTempReg(result_hi);
-}
-#if 0
-/*-----------------------------------------------------------------*/
-/* constMult - generates code for multiplication by a constant */
-/*-----------------------------------------------------------------*/
-void genMultConst(unsigned C)
-{
-
- unsigned lit;
- unsigned sr3; // Shift right 3
- unsigned mask;
-
- int size = 1;
-
- /*
- Convert a string of 3 binary 1's in the lit into
- 0111 = 1000 - 1;
- */
-
- mask = 7 << ( (size*8) - 3);
- lit = C;
- sr3 = 0;
-
- while(mask < (1<<size*8)) {
-
- if( (mask & lit) == lit) {
- unsigned lsb;
-
- /* We found 3 (or more) consecutive 1's */
-
- lsb = mask & ~(mask & (mask-1)); // lsb of mask.
-
- consecutive_bits = ((lit + lsb) & lit) ^ lit;
-
- lit ^= consecutive_bits;
-
- mask <<= 3;
-
- sr3 |= (consecutive + lsb);
-
- }
-
- mask >>= 1;
-
- }
-
+ /*
+ * First byte, no carry-in.
+ * Any optimizations that are longer than 2 instructions are
+ * useless.
+ */
+ if(same && isLit && ((lit & 0xff) == 0xff)) {
+ // right === res = 0xFF - right = ~right
+ emitpcode(POC_COMF, popGet(right, 0));
+ if(size > 1) {
+ // setup CARRY/#BORROW
+ emitSETC;
+ } // if
+ } else if((size == 1) && isLit && ((lit & 0xff) == 0xff)) {
+ // res = 0xFF - right = ~right
+ emitpcode(POC_COMFW, popGet(right, 0));
+ emitpcode(POC_MOVWF, popGet(result, 0));
+ // CARRY/#BORROW is not setup correctly
+ } else if((size == 1) && same && isLit && ((lit & 0xff) == 0)) {
+ // right === res = 0 - right = ~right + 1
+ emitpcode(POC_COMF, popGet(right, 0));
+ emitpcode(POC_INCF, popGet(right, 0));
+ // CARRY/#BORROW is not setup correctly
+ } else {
+ // general case, should always work
+ mov2w(right, 0);
+ if (pic14_sameRegs(left, result)) {
+ // result === left = left - right (in place)
+ emitpcode(POC_SUBWF, popGet(result, 0));
+ } else {
+ // works always: result = left - right
+ emitpcode(op_isLitLike(IC_LEFT(ic))
+ ? POC_SUBLW : POC_SUBFW,
+ popGetAddr(left, 0, 0));
+ emitpcode(POC_MOVWF, popGet(result, 0));
+ } // if
+ } // if
+
+ /*
+ * Now for the remaining bytes with carry-in (and carry-out).
+ */
+ offset = 0;
+ while(--size) {
+ lit >>= 8;
+ offset++;
+
+ /*
+ * The following code generation templates are ordered
+ * according to increasing length; the first template
+ * that matches will thus be the shortest and produce
+ * the best code possible with thees templates.
+ */
+
+ if(pic14_sameRegs(left, right)) {
+ /*
+ * This case should not occur; however, the
+ * template works if LEFT, RIGHT, and RESULT are
+ * register operands and LEFT and RIGHT are the
+ * same register(s) and at least as long as the
+ * result.
+ *
+ * CLRF result
+ *
+ * 1 cycle
+ */
+ emitpcode(POC_CLRF, popGet(result, offset));
+ } else if(pic14_sameRegs(left, result)) {
+ /*
+ * This template works if LEFT, RIGHT, and
+ * RESULT are register operands and LEFT and
+ * RESULT are the same register(s).
+ *
+ * MOVF right, W ; W := right
+ * BTFSS STATUS, C
+ * INCFSZ right, W ; W := right + BORROW
+ * SUBWF result, F ; res === left := left - (right + BORROW)
+ *
+ * The SUBWF *must* be skipped if we have a
+ * BORROW bit and right == 0xFF in order to
+ * keep the BORROW bit intact!
+ *
+ * 4 cycles
+ */
+ mov2w(right, offset);
+ emitSKPC;
+ emitpcode(POC_INCFSZW, popGet(right, offset));
+ emitpcode(POC_SUBWF, popGet(result, offset));
+ } else if((size == 1) && isLit && ((lit & 0xff) == 0xff)) {
+ /*
+ * This template works for the last byte (MSB) of
+ * the subtraction and ignores correct propagation
+ * of the outgoing BORROW bit. RIGHT and RESULT
+ * must be register operands, LEFT must be the
+ * literal 0xFF.
+ *
+ * (The case LEFT === RESULT is optimized above.)
+ *
+ * 0xFF - right - BORROW = ~right - BORROW
+ *
+ * COMF right, W ; W := 0xff - right
+ * BTFSS STATUS, C
+ * ADDLW 0xFF ; W := 0xff - right - BORROW
+ * MOVWF result
+ *
+ * 4 cycles
+ */
+ emitpcode(POC_COMFW, popGet(right, offset));
+ emitSKPC;
+ emitpcode(POC_ADDLW, popGetLit(0xff));
+ emitpcode(POC_MOVWF, popGet(result, offset));
+ } else if(size == 1) {
+ /*
+ * This template works for the last byte (MSB) of
+ * the subtraction and ignores correct propagation
+ * of the outgoing BORROW bit. RIGHT and RESULT
+ * must be register operands, LEFT can be a
+ * register or a literal operand.
+ *
+ * (The case LEFT === RESULT is optimized above.)
+ *
+ * MOVF right, W ; W := right
+ * BTFSS STATUS, C
+ * INCF right, W ; W := right + BORROW
+ * SUBxW left, W ; W := left - right - BORROW
+ * MOVWF result
+ *
+ * 5 cycles
+ */
+ mov2w(right, offset);
+ emitSKPC;
+ emitpcode(POC_INCFW, popGet(right, offset));
+ emitpcode(op_isLitLike(IC_LEFT(ic))
+ ? POC_SUBLW : POC_SUBFW,
+ popGetAddr(left, offset, 0));
+ emitpcode(POC_MOVWF, popGet(result, offset));
+ } else if(IS_ITEMP(IC_RESULT(ic))
+ && !pic14_sameRegs(right, result)) {
+ /*
+ * This code template works if RIGHT and RESULT
+ * are different register operands and RESULT
+ * is not volatile/an SFR (written twice).
+ *
+ * #########################################
+ * Since we cannot determine that for sure,
+ * we approximate via IS_ITEMP() for now.
+ * #########################################
+ *
+ * MOVxW left, W ; copy left to result
+ * MOVWF result
+ * MOVF right, W ; W := right
+ * BTFSS STATUS, C
+ * INCFSZ right, W ; W := right + BORROW
+ * SUBWF result, F ; res === left := left - (right + BORROW)
+ *
+ * 6 cycles, but fails for SFR RESULT operands
+ */
+ mov2w(left, offset);
+ emitpcode(POC_MOVWF, popGet(result, offset));
+ mov2w(right, offset);
+ emitSKPC;
+ emitpcode(POC_INCFSZW, popGet(right, offset));
+ emitpcode(POC_SUBWF, popGet(result, offset));
+ } else if(!optimize.codeSize && isLit && ((lit & 0xff) != 0)) {
+ /*
+ * This template works if RIGHT and RESULT are
+ * register operands and LEFT is a literal
+ * operand != 0.
+ *
+ * MOVxW right, W
+ * BTFSC STATUS, C
+ * GOTO next
+ * SUBLW left-1
+ * GOTO common
+ * next:
+ * SUBLW left
+ * common:
+ * MOVWF result
+ *
+ * 6 cycles, 7 iff BORROW
+ * (9 instructions)
+ */
+ lbl_comm = newiTempLabel(NULL);
+ lbl_next = newiTempLabel(NULL);
+
+ mov2w(right, offset);
+ emitSKPNC;
+ emitpcode(POC_GOTO, popGetLabel(lbl_next->key));
+ emitpcode(POC_SUBLW, popGetLit((lit - 1) & 0xff));
+ emitpcode(POC_GOTO, popGetLabel(lbl_comm->key));
+ emitpLabel(lbl_next->key);
+ emitpcode(POC_SUBLW, popGetLit(lit & 0xff));
+ emitpLabel(lbl_comm->key);
+ emitpcode(POC_MOVWF, popGet(result, offset));
+ } else {
+ /*
+ * This code template works if RIGHT and RESULT
+ * are register operands.
+ *
+ * MOVF right, W ; W := right
+ * BTFSS STATUS, C
+ * INCFSZ right, W ; W := right + BORROW
+ * GOTO common
+ * MOVxW left ; if we subtract 0x100 = 0xFF + 1, ...
+ * GOTO next ; res := left, but keep BORROW intact
+ * common:
+ * SUBxW left, W ; W := left - (right + BORROW)
+ * next:
+ * MOVW result ; res := left - (right + BORROW)
+ *
+ * 7 cycles, 8 iff BORROW and (right == 0xFF)
+ * (8 instructions)
+ *
+ *
+ *
+ * Alternative approach using -x = ~x + 1 ==> ~x = -x - 1 = -(x + 1)
+ *
+ * COMFW right, W ; W := -right - (assumed BORROW)
+ * BTFSC STATUS, C ; SKIP if we have a BORROW
+ * ADDLW 1 ; W := -right (no BORROW)
+ * BTFSC STATUS, C ; (***)
+ * MOVLW left ; (***)
+ * BTFSS STATUS, C ; (***)
+ * ADDFW left, W ; W := left - right - BORROW (if any)
+ * MOVWF result ; result := left - right - BORROW (if any)
+ *
+ * 8 cycles
+ *
+ * Case A: C=0 (BORROW)
+ * r=0x00, W=0xFF, W=left+0xFF, C iff left>0x00
+ * r=0x01, W=0xFE, W=left+0xFE, C iff left>0x01
+ * r=0xFE, W=0x01, W=left+0x01, C iff left>0xFE
+ * r=0xFF, W=0x00, W=left+0x00, C iff left>0xFF
+ *
+ * Case B: C=1 (no BORROW)
+ * r=0x00, W=0xFF, W=0x00/C=1, W=left+0x00, C iff left>=0x100 (***)
+ * r=0x01, W=0xFE, W=0xFF/C=0, W=left+0xFF, C iff left>=0x01
+ * r=0xFE, W=0x01, W=0x02/C=0, W=left+0x02, C iff left>=0xFE
+ * r=0xFF, W=0x00, W=0x01/C=0, W=left+0x01, C iff left>=0xFF
+ */
+ lbl_comm = newiTempLabel(NULL);
+ lbl_next = newiTempLabel(NULL);
+
+ mov2w(right, offset);
+ emitSKPC;
+ emitpcode(POC_INCFSZW, popGet(right, offset));
+ emitpcode(POC_GOTO, popGetLabel(lbl_comm->key));
+ mov2w(left, offset);
+ emitpcode(POC_GOTO, popGetLabel(lbl_next->key));
+ emitpLabel(lbl_comm->key);
+ emitpcode(op_isLitLike(IC_LEFT(ic))
+ ? POC_SUBLW : POC_SUBFW,
+ popGetAddr(left, offset, 0));
+ emitpLabel(lbl_next->key);
+ emitpcode(POC_MOVWF, popGet(result, offset));
+ } // if
+ } // while
+ } // if
+
+ if(AOP_TYPE(IC_RESULT(ic)) == AOP_CRY) {
+ fprintf(stderr, "WARNING: AOP_CRY (bit-) results are probably broken. Please report this with source code as a bug.\n");
+ mov2w(result, 0); // load Z flag
+ emitpcode(POC_BCF, popGet(result, 0));
+ emitSKPZ;
+ emitpcode(POC_BSF, popGet(result, 0));
+ } // if
+
+ // adjustArithmeticResult(ic);
+
+release:
+ freeAsmop(IC_LEFT(ic),NULL,ic,(RESULTONSTACK(ic) ? FALSE : TRUE));
+ freeAsmop(IC_RIGHT(ic),NULL,ic,(RESULTONSTACK(ic) ? FALSE : TRUE));
+ freeAsmop(IC_RESULT(ic),NULL,ic,TRUE);
}
-#endif
projects / fw / sdcc / blobdiff