#include "SDCCpeeph.h"
#include "ralloc.h"
#include "pcode.h"
+#include "device.h"
#include "gen.h"
#include "genutils.h"
}
size = AOP_SIZE(IC_RESULT(ic));
+ if (size >= AOP_SIZE(IC_LEFT(ic))) size = AOP_SIZE(IC_LEFT(ic));
+
while (size--) {
if (pic16_sameRegs(AOP(IC_LEFT(ic)), AOP(IC_RESULT(ic))) ) {
pic16_emitpcode(POC_COMF, pic16_popGet(AOP(IC_LEFT(ic)), offset));
offset++;
}
+ /* handle implicit upcast */
+ size = AOP_SIZE(IC_RESULT(ic));
+ if (offset < size)
+ {
+ if (SPEC_USIGN(operandType(IC_LEFT(ic)))) {
+ while (offset < size) {
+ pic16_emitpcode(POC_SETF, pic16_popGet(AOP(IC_RESULT(ic)), offset));
+ offset++;
+ } // while
+ } else {
+ if ((offset + 1) == size) {
+ /* just one byte to fix */
+ pic16_emitpcode(POC_SETF, pic16_popGet(AOP(IC_RESULT(ic)), offset));
+ pic16_emitpcode(POC_BTFSC, pic16_newpCodeOpBit(pic16_aopGet(AOP(IC_RESULT(ic)),offset-1,FALSE,FALSE),7,0, PO_GPR_REGISTER));
+ pic16_emitpcode(POC_CLRF, pic16_popGet(AOP(IC_RESULT(ic)), offset));
+ } else {
+ /* two or more byte to adjust */
+ pic16_emitpcode(POC_SETF, pic16_popCopyReg( &pic16_pc_wreg ));
+ pic16_emitpcode(POC_BTFSC, pic16_newpCodeOpBit(pic16_aopGet(AOP(IC_RESULT(ic)),offset-1,FALSE,FALSE),7,0, PO_GPR_REGISTER));
+ pic16_emitpcode(POC_CLRF, pic16_popCopyReg( &pic16_pc_wreg ));
+ while (offset < size) {
+ pic16_emitpcode(POC_MOVWF, pic16_popGet(AOP(IC_RESULT(ic)), offset));
+ offset++;
+ } // while
+ } // if
+ }
+ } // if
+
release:
/* release the aops */
pic16_freeAsmop(IC_LEFT(ic),NULL,ic,(RESULTONSTACK(ic) ? 0 : 1));
}
+void pic16_DumpOpX(FILE *fp, char *prefix, operand *op)
+{
+ if(!op)return;
+
+ fprintf(fp, "%s [", prefix);
+ fprintf(fp, "%s", IS_SYMOP(op)?"S":" ");
+ fprintf(fp, "%s", IS_VALOP(op)?"V":" ");
+ fprintf(fp, "%s", IS_TYPOP(op)?"T":" ");
+ fprintf(fp, "] ");
+
+ fprintf(fp, "isaddr:%d,", op->isaddr);
+ fprintf(fp, "isvolatile:%d,", op->isvolatile);
+ fprintf(fp, "isGlobal:%d,", op->isGlobal);
+ fprintf(fp, "isPtr:%d,", op->isPtr);
+ fprintf(fp, "isParm:%d,", op->isParm);
+ fprintf(fp, "isLit:%d\n", op->isLiteral);
+}
+
+
void _debugf(char *f, int l, char *frm, ...)
{
va_list ap;
gpsimio2_lit('\n');
}
+
+const char *gptr_fns[4][2] = {
+ { "_gptrget1", "_gptrput1" },
+ { "_gptrget2", "_gptrput2" },
+ { "_gptrget3", "_gptrput3" },
+ { "_gptrget4", "_gptrput4" } };
+
+extern set *externs;
+
+/* generate a call to the generic pointer read/write functions */
+void pic16_callGenericPointerRW(int rw, int size)
+{
+ char buf[32];
+ symbol *sym;
+
+ if(size>4) {
+ werror(W_POSSBUG2, __FILE__, __LINE__);
+ abort();
+ }
+
+ strcpy(buf, port->fun_prefix);
+ strcat(buf, gptr_fns[size-1][rw]);
+
+ pic16_emitpcode (POC_CALL, pic16_popGetWithString (buf));
+
+ sym = newSymbol( buf, 0 );
+ sym->used++;
+ strcpy(sym->rname, buf);
+ checkAddSym(&externs, sym);
+}
+
+
+
+/* check all condition and return appropriate instruction, POC_CPFSGT or POC_CPFFSLT */
+static int selectCompareOp(resolvedIfx *rIfx, iCode *ifx,
+ operand *result, int offset, int invert_op)
+{
+ /* add code here */
+
+ /* check condition, > or < ?? */
+ if(rIfx->condition != 0)invert_op ^= 1;
+
+ if(ifx && IC_FALSE(ifx))invert_op ^= 1;
+
+ if(!ifx)invert_op ^= 1;
+
+ DEBUGpic16_emitcode("; +++", "%s:%d %s] rIfx->condition= %d, ifx&&IC_FALSE(ifx)= %d, invert_op = %d",
+ __FILE__, __LINE__, __FUNCTION__, rIfx->condition, (ifx && IC_FALSE(ifx)), invert_op);
+
+ /* do selection */
+ if(!invert_op)return POC_CPFSGT;
+ else return POC_CPFSLT;
+}
+
+/* return 1 if function handles compare, 0 otherwise */
+/* this functions handles special cases like:
+ * reg vs. zero
+ * reg vs. one
+ */
+int pic16_genCmp_special(operand *left, operand *right, operand *result,
+ iCode *ifx, resolvedIfx *rIfx, int sign)
+{
+ int size;
+ int offs=0;
+ symbol *tmplbl;
+ unsigned long lit;
+ int op, cmp_op=0, cond_pre;
+
+ FENTRY;
+
+ if(!(pic16_options.opt_flags & OF_OPTIMIZE_CMP))return 0;
+
+ size = max(AOP_SIZE(left), AOP_SIZE(right));
+
+ cond_pre = rIfx->condition; // must restore old value on return with 0!!!
+
+ if(!isAOP_REGlike(left)) {
+ operand *dummy;
+
+ dummy = left;
+ left = right;
+ right = dummy;
+
+ /* invert comparing operand */
+// cmp_op ^= 1;
+ rIfx->condition ^= 1;
+ }
+
+
+ if(isAOP_REGlike(left) && isAOP_LIT(right)) {
+ /* comparing register vs. literal */
+ lit = (unsigned long)floatFromVal(AOP(right)->aopu.aop_lit);
+
+
+ if(size == 1) {
+ op = selectCompareOp(rIfx, ifx, result, offs, cmp_op);
+
+ DEBUGpic16_emitcode("%%", "comparing operand %s, condition: %d", (op==POC_CPFSLT?"POC_CPFSLT":"POC_CPFSGT"), rIfx->condition);
+
+ if(!sign) {
+ /* unsigned compare */
+ switch( lit ) {
+ case 0:
+ if(ifx && IC_FALSE(ifx)) {
+ tmplbl = newiTempLabel( NULL );
+ pic16_emitpcode(POC_TSTFSZ, pic16_popGet(AOP(left), 0));
+ pic16_emitpcode(POC_BRA, pic16_popGetLabel(tmplbl->key));
+ pic16_emitpcode(POC_BRA, pic16_popGetLabel(rIfx->lbl->key));
+ pic16_emitpLabel(tmplbl->key);
+
+ ifx->generated = 1;
+ return 1;
+ }
+ break;
+ } /* switch */
+
+ } /* if(!sign) */
+
+ } /* if(size==1) */
+
+ } /* */
+
+ rIfx->condition = cond_pre;
+ return 0;
+}
projects / fw / sdcc / blobdiff