case AOP_ACC:
return "AOP_ACC";
break;
+ case AOP_PCODE:
+ return "AOP_PCODE";
+ break;
}
return "BAD TYPE";
}
+
+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_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 */
/*-----------------------------------------------------------------*/
DEBUGpic14_emitcode(";","adding lit to something. size %d",size);
genAddLit (ic, lit);
+ goto release;
} else if(AOP_TYPE(IC_RIGHT(ic)) == AOP_CRY) {
if (pic14_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) )
emitpcode(POC_ADDWF, popGet(AOP(IC_LEFT(ic)),0));
else {
- if( (AOP_TYPE(IC_LEFT(ic)) == AOP_IMMD) ||
- (AOP_TYPE(IC_LEFT(ic)) == AOP_LIT) ) {
- emitpcode(POC_ADDLW, popGet(AOP(IC_LEFT(ic)),0));
- } else {
- emitpcode(POC_ADDFW, popGet(AOP(IC_LEFT(ic)),0));
- if ( AOP_TYPE(IC_RESULT(ic)) != AOP_ACC)
- emitpcode(POC_MOVWF,popGet(AOP(IC_RESULT(ic)),0));
- }
+ PIC_OPCODE poc = POC_ADDFW;
+
+ if ((AOP_TYPE(IC_LEFT(ic)) == AOP_PCODE) && AOP(IC_LEFT(ic))->aopu.pcop->type == PO_LITERAL)
+ 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));
}
}
}
}
/*-----------------------------------------------------------------*/
-/* addSign - complete with sign */
+/* addSign - propogate sign bit to higher bytes */
/*-----------------------------------------------------------------*/
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){
- pic14_emitcode("rlc","a");
- pic14_emitcode("subb","a,acc");
- while(size--)
- aopPut(AOP(result),"a",offset++);
- } else
- while(size--)
- aopPut(AOP(result),"#0",offset++);
- }
+ 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));
+
+ }
+ } else
+ while(size--)
+ emitpcode(POC_CLRF,popGet(AOP(result),offset++));
+ }
}
/*-----------------------------------------------------------------*/
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;
+
+ 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));
+ 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;
+
+ }
+ } 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;
+ }
+
+}
+
+/*-----------------------------------------------------------------*
+ * 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);
+
+ }
+}
+
+/*-----------------------------------------------------------------*
+ * 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;
+
+ }
+
+}
+
+#endif
projects / fw / sdcc / blobdiff