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Diffstat (limited to 'mips.c')
-rw-r--r--mips.c42
1 files changed, 25 insertions, 17 deletions
diff --git a/mips.c b/mips.c
index abb86ab..fd41e67 100644
--- a/mips.c
+++ b/mips.c
@@ -7,6 +7,7 @@
int reg_v0 = 2;
int reg_v1 = 3;
+COpr_t status[32];
void mips_prologue() {
CVList_t v;
@@ -25,10 +26,10 @@ void mips_prologue() {
switch (initr->ext.type->type)
{
case CINT:
- printf("\t.word %d\n", initr->ext.const_val);
+ printf("\t.word %ld\n", initr->ext.const_val);
break;
case CCHAR:
- printf("\t.byte %d\n", initr->ext.const_val);
+ printf("\t.byte %ld\n", initr->ext.const_val);
break;
case CPTR:
{
@@ -62,7 +63,7 @@ void mips_prologue() {
}
void mips_load(int reg, COpr_t opr) {
- CVar_t var = cinterv_repr(opr)->info.var;
+ CVar_t var = opr->spill->info.var;
CType_t type = opr->type;
if (type->type == CSTRUCT ||
type->type == CUNION ||
@@ -84,7 +85,7 @@ void mips_load(int reg, COpr_t opr) {
}
void mips_store(int reg, COpr_t opr) {
- CVar_t var = cinterv_repr(opr)->info.var;
+ CVar_t var = opr->spill->info.var;
CType_t type = opr->type;
const char *l = type->type == CCHAR ? "sb" : "sw";
/* TODO: struct */
@@ -110,7 +111,7 @@ int mips_to_reg(COpr_t opr, int reg0) {
printf("\tla $%d, _func_%s\n", reg0, opr->info.str);
return reg0;
}
- if (opr->reg != -1) return cinterv_repr(opr)->reg;
+ if (opr->reg != -1) return opr->reg;
mips_load(reg0, opr);
return reg0;
}
@@ -128,7 +129,8 @@ void mips_space_alloc() {
for (d = defs; d; d = d->next)
{
COpr_t opr = d->opr;
- if (opr->kind == TMP && opr->par == opr)
+ assert(opr->par == opr);
+ if (opr->kind == TMP)
{
int t = opr->type->type;
tmp_size += align_shift(tmp_size);
@@ -192,7 +194,8 @@ void mips_space_alloc() {
for (d = defs; d; d = d->next)
{
COpr_t opr = d->opr;
- if (opr->kind == TMP && opr->par == opr)
+ assert(opr->par == opr);
+ if (opr->kind == TMP)
opr->info.var->start += prev;
}
prev += tmp_size;
@@ -261,7 +264,7 @@ void mips_generate() {
switch (i->op)
{
case LOAD:
- if (i->dest->reg != -1)
+ if (i->dest->kind == VAR && i->dest->reg > 0)
mips_load(i->dest->reg, i->dest);
break;
case MOVE:
@@ -269,7 +272,7 @@ void mips_generate() {
/* TODO: struct */
int rs = mips_to_reg(i->src1, reg_v0);
int rd = i->dest->reg;
- if (rd != -1)
+ if (rd > 0)
printf("\tmove $%d $%d\n", rd, rs);
else
rd = rs;
@@ -378,15 +381,20 @@ void mips_generate() {
{
int rd = i->dest->reg;
if (i->src1->kind == IMMF)
- printf("\tjal _func_%s\n", i->src1->info.str);
+ printf("\tjal %s%s\n",
+ strcmp(i->src1->info.str, "main") ? "_func_" : "",
+ i->src1->info.str);
else
printf("\tjalr $%d\n", mips_to_reg(i->src1, reg_v0));
- if (rd != -1)
- printf("\tmove $%d, $%d\n", rd, reg_v0);
- else
- rd = reg_v0;
- if (i->dest->reg == -1 || i->dest->kind == VAR)
- mips_store(reg_v0, i->dest);
+ if (rd != -2)
+ {
+ if (rd != -1)
+ printf("\tmove $%d, $%d\n", rd, reg_v0);
+ else
+ rd = reg_v0;
+ if (i->dest->reg == -1 || i->dest->kind == VAR)
+ mips_store(reg_v0, i->dest);
+ }
}
break;
case RET:
@@ -411,7 +419,7 @@ void mips_generate() {
printf("\tla $%d, %s\n", rd, i->src1->info.str);
else
{
- CVar_t var = i->src1->info.var;
+ CVar_t var = i->src1->spill->info.var;
if (var->global)
printf("\tla $%d, _%s\n", rd, var->name);
else