int pic14_nRegs = 128; // = sizeof (regspic14) / sizeof (regs);
int Gstack_base_addr=0; /* The starting address of registers that
-* are used to pass and return parameters */
+ * are used to pass and return parameters */
+int Gstack_size = 0;
fprintf (debugF, "%s", buffer);
/*
- while (isspace(*bufferP)) bufferP++;
+ while (isspace((unsigned char)*bufferP)) bufferP++;
if (bufferP && *bufferP)
lineCurr = (lineCurr ?
dReg->reglives.assignedpFlows = newSet();
hTabAddItem(&dynDirectRegNames, regname2key(name), dReg);
-
+
return dReg;
}
int i;
Gstack_base_addr = base_address;
- //fprintf(stderr,"initStack");
+ Gstack_size = size;
+ //fprintf(stderr,"initStack [base:0x%02x, size:%d]\n", base_address, size);
for(i = 0; i<size; i++) {
- regs *r = newReg(REG_STK, PO_GPR_TEMP,base_address,NULL,1,0);
+ char buffer[16];
+ SNPRINTF(&buffer[0], 16, "STK%02d", i);
+ regs *r = newReg(REG_STK, PO_GPR_TEMP,base_address,buffer,1,0);
r->address = base_address; // Pseudo stack needs a fixed location that can be known by all modules
r->isFixed = 1;
- r->name[0] = 's';
+ r->isPublic = 1;
+ //r->name[0] = 's';
r->alias = 0x180; // Using shared memory for pseudo stack
addSet(&dynStackRegs,r);
base_address--;
{
regs *reg;
int address = 0;
+ sym_link *spec = getSpec (symlnk);
/* if this is at an absolute address, then get the address. */
- if (SPEC_ABSA (symlnk) ) {
- address = SPEC_ADDR (symlnk);
+ if (SPEC_ABSA (spec) ) {
+ address = SPEC_ADDR (spec);
//fprintf(stderr,"reg %s is at an absolute address: 0x%03x\n",name,address);
}
} else {
int idx;
if (address) {
- if (IS_BITVAR (symlnk))
+ if (IS_BITVAR (spec))
idx = address >> 3;
else
idx = address;
reg = newReg(REG_GPR, PO_DIR, idx, (char*)name,getSize (symlnk),0 );
debugLog (" -- added %s to hash, size = %d\n", (char*)name,reg->size);
- if (SPEC_ABSA (symlnk) ) {
+ if (SPEC_ABSA (spec) ) {
reg->type = REG_SFR;
}
- if (IS_BITVAR (symlnk)) {
+ if (IS_BITVAR (spec)) {
addSet(&dynDirectBitRegs, reg);
reg->isBitField = 1;
} else
addSet(&dynDirectRegs, reg);
- if (!IS_STATIC (symlnk)) {
+ if (!IS_STATIC (spec)) {
reg->isPublic = 1;
}
- if (IS_EXTERN (symlnk)) {
+ if (IS_EXTERN (spec)) {
reg->isExtern = 1;
}
debugLog (" -- and it is at a fixed address 0x%02x\n",reg->address);
}
} else {
- allocNewDirReg (OP_SYM_ETYPE(op),name);
+ allocNewDirReg (OP_SYM_TYPE(op),name);
}
return reg;
/* Register wasn't found in hash, so let's create
* a new one and put it in the hash table AND in the
* dynDirectRegNames set */
- //fprintf (stderr,"%s symbol name %s\n", __FUNCTION__,name);
+ //fprintf (stderr,"%s symbol name %s, size:%d\n", __FUNCTION__,name,size);
reg = newReg(REG_GPR, PO_DIR, rDirectIdx++, name,size,0 );
for (sym = setFirstItem(sfr->syms); sym; sym = setNextItem(sfr->syms)) {
if (strcmp(reg->name+1,sym->name)==0) {
assignRelocatableRegisters(dynAllocRegs,0);
assignRelocatableRegisters(dynStackRegs,0);
+ assignRelocatableRegisters(dynDirectRegs,0);
/*
assignRelocatableRegisters(dynDirectRegs,0);
printf("assignRelocatableRegisters(dynDirectRegs,0);\n");
/* if it does not end here */
if (sym->liveTo > ic->seq)
continue;
-
- /* HACK: result and addr must be disjoint for POINTER_GET */
- if (sym->liveTo == ic->seq && POINTER_GET(ic))
+
+ /* Prevent the result from being assigned the same registers as (one)
+ * operand as many genXXX-functions fail otherwise.
+ * POINTER_GET(ic) || ic->op == LEFT_OP || ic->op == RIGHT_OP || ic->op == NOT
+ * are known to fail. */
+ if (sym->liveTo == ic->seq && IC_RESULT(ic))
{
- //piCode (ic, stderr); fprintf (stderr, " -- registers NOT deallocated\n");
- continue;
+ switch (ic->op)
+ {
+ case '=': /* assignment */
+ case BITWISEAND: /* bitwise AND */
+ case '|': /* bitwise OR */
+ case '^': /* bitwise XOR */
+ case '~': /* bitwise negate */
+ case RLC: /* rotate through carry */
+ case RRC:
+ case UNARYMINUS:
+ case '+': /* addition */
+ case '-': /* subtraction */
+ /* go ahead, these are safe to use with
+ * non-disjoint register sets */
+ break;
+
+ default:
+ /* do not release operand registers */
+ //fprintf (stderr, "%s:%u: operand not freed: ", __FILE__, __LINE__); piCode (ic, stderr); fprintf (stderr, "\n");
+ continue;
+ } // switch
}
-
+
/* if it was spilt on stack then we can
mark the stack spil location as free */
if (sym->isspilt)
static void
packRegsForAccUse (iCode * ic)
{
- iCode *uic;
+ //iCode *uic;
debugLog ("%s\n", __FUNCTION__);
+
+ /* result too large for WREG? */
+ if (getSize (operandType (IC_RESULT (ic))) > 1)
+ return;
+ /* We have to make sure that OP_SYMBOL(IC_RESULT(ic))
+ * is never used as an operand to an instruction that
+ * cannot have WREG as an operand (e.g. BTFSx cannot
+ * operate on WREG...
+ * For now, store all results into proper registers. */
+ return;
+
+#if 0
/* if this is an aggregate, e.g. a one byte char array */
if (IS_AGGREGATE(operandType(IC_RESULT(ic)))) {
return;
accuse:
debugLog ("%s - Yes we are using the accumulator\n", __FUNCTION__);
OP_SYMBOL (IC_RESULT (ic))->accuse = 1;
-
-
+#endif
}
/*-----------------------------------------------------------------*/
projects / fw / sdcc / blobdiff