diff options
Diffstat (limited to 'mips.c')
| -rw-r--r-- | mips.c | 41 |
1 files changed, 26 insertions, 15 deletions
@@ -10,6 +10,7 @@ int reg_v1 = 3; int memcpy_cnt; static int save_pos[32]; static int used_reg[32]; +static CType_t func; void mips_prologue(void) { CVList_t v; @@ -60,7 +61,7 @@ void mips_prologue(void) { } printf("\t.align 2\n"); prev += align_shift(prev); - for (s = cstrs; s; s = s->next) + for (s = cstrs->next; s != cstrs; s = s->next) { int len = 1; char *p = s->str; @@ -190,7 +191,7 @@ void mips_space_alloc(void) { CBlock_t p; COList_t d; CVar_t v; - for (d = defs; d; d = d->next) + for (d = func_ir->defs; d; d = d->next) { COpr_t opr = d->opr; assert(opr->par == opr); @@ -207,7 +208,7 @@ void mips_space_alloc(void) { tmp_size += calc_size(opr->type); } } - for (p = entry; p; p = p->next) + for (p = func_ir->entry; p; p = p->next) { CInst_t i, ih = p->insts; for (i = ih->next; i != ih; i = i->next) @@ -264,7 +265,7 @@ void mips_space_alloc(void) { } prev += save_size; /* adjust offset for spilled temporaries */ - for (d = defs; d; d = d->next) + for (d = func_ir->defs; d; d = d->next) { COpr_t opr = d->opr; assert(opr->par == opr); @@ -273,7 +274,7 @@ void mips_space_alloc(void) { } prev += tmp_size; prev += align_shift(prev); - for (p = entry; p; p = p->next) + for (p = func_ir->entry; p; p = p->next) { CInst_t i, ih = p->insts; for (i = ih->next; i != ih; i = i->next) @@ -316,7 +317,9 @@ void mips_func_end(void) { void mips_generate(void) { CBlock_t p; - CType_t rt = func->rec.func.ret; + CType_t rt; + func = func_ir->func; + rt = func->rec.func.ret; /* int arg_cnt = 0; */ mips_space_alloc(); if (strcmp(func->name, "main")) @@ -324,9 +327,9 @@ void mips_generate(void) { else printf("main:\n"); mips_func_begin(); - for (p = entry; p; p = p->next) + for (p = func_ir->entry; p; p = p->next) { - if (p->ref) printf("_L%d:\n", p->id + gbbase); + if (p->ref) printf("_L%d:\n", p->id + func_ir->gbbase); CInst_t i, ih = p->insts; const char *bop; for (i = ih->next; i != ih; i = i->next) @@ -520,16 +523,24 @@ void mips_generate(void) { int j; memset(used_reg, 0, sizeof used_reg); /* NOTE: bad hack */ - if (i->src1->kind == IMMF && !strcmp(i->src1->info.str, "__print_string")) + if (i->src1->kind == IMMF) { - printf( "\tlw $a0, 0($sp)\n" - "\tli $2, 4\n" - "\tsyscall\n"); - break; + char *fname = i->src1->info.str; + int flag = 0; + if (!strcmp(fname, "__print_int")) flag = 1; + else if (!strcmp(fname, "__print_char")) flag = 11; + else if (!strcmp(fname, "__print_string")) flag = 4; + if (flag) + { + printf( "\tlw $a0, 0($sp)\n" + "\tli $2, %d\n" + "\tsyscall\n", flag); + break; + } } if (rt->type == CSTRUCT || rt->type == CUNION) used_reg[30] = 1; /* save $fp */ - for (p = defs; p; p = p->next) + for (p = func_ir->defs; p; p = p->next) { COpr_t opr = p->opr; if (opr->reg != -1 && @@ -556,7 +567,7 @@ void mips_generate(void) { for (j = 0; j < 32; j++) if (used_reg[j]) printf("\tlw $%d, %d($sp) # load reg\n", j, save_pos[j]); - for (p = defs; p; p = p->next) + for (p = func_ir->defs; p; p = p->next) { COpr_t opr = p->opr; if (opr->reg != -1 && |