diff options
Diffstat (limited to 'mips.c')
| -rw-r--r-- | mips.c | 42 |
1 files changed, 25 insertions, 17 deletions
@@ -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 |