diff options
Diffstat (limited to 'mips.c')
| -rw-r--r-- | mips.c | 60 |
1 files changed, 31 insertions, 29 deletions
@@ -11,7 +11,7 @@ int memcpy_cnt; static int save_pos[32]; static int used_reg[32]; -void mips_prologue() { +void mips_prologue(void) { CVList_t v; CSList_t s; printf(".data 0x10000000\n"); @@ -120,7 +120,7 @@ int mips_to_reg(COpr_t opr, int reg0) { return reg0; } -void mips_memcpy() { +void mips_memcpy(void) { printf("\tj _mem_cond%d\n", memcpy_cnt); printf("_mem_loop%d:\n", memcpy_cnt); printf("\tlw $5, 0($%d)\n", reg_v0); @@ -135,7 +135,7 @@ void mips_memcpy() { /* memcpy requires three arguments */ #define RESERVED_CALL_SIZE 12 -void mips_space_alloc() { +void mips_space_alloc(void) { int local_size = func->rec.func.local_size; int arg_size = RESERVED_CALL_SIZE; int bret_size = 0; @@ -244,7 +244,7 @@ void mips_space_alloc() { func->rec.func.frame_size = prev; } -void mips_func_begin() { +void mips_func_begin(void) { int fsize = func->rec.func.frame_size; if (fsize < 0x8000) printf("\taddiu $sp, $sp, -%d\n", fsize); @@ -256,7 +256,7 @@ void mips_func_begin() { printf("\tsw $31, %d($sp) #%s\n", fsize - 4, func->name); } -void mips_func_end() { +void mips_func_end(void) { int fsize = func->rec.func.frame_size; printf("_ret_%s:\n", func->name); printf("\tlw $31, %d($sp)\n", fsize - 4); @@ -272,7 +272,7 @@ void mips_func_end() { #define IN_IMM(x) (-0x8000 <= (x) && (x) < 0x8000) -void mips_generate() { +void mips_generate(void) { CBlock_t p; CType_t rt = func->rec.func.ret; /* int arg_cnt = 0; */ @@ -289,7 +289,7 @@ void mips_generate() { const char *bop; for (i = ih->next; i != ih; i = i->next) { - int flag = 1, swap; + int flag = 1, swap, rimm; if (i->dest && i->dest->reg == -2 && i->dest->kind == TMP && i->op != CALL) continue; printf("# "); @@ -590,26 +590,26 @@ void mips_generate() { } if (flag) continue; flag = 1; - swap = 0; + swap = rimm = 0; switch (i->op) { - case MUL: bop = "mul"; break; - case DIV: bop = "divu"; break; - case MOD: bop = "rem"; break; - case ADD: bop = "addu"; swap = 1; break; - case SUB: bop = "subu"; break; - case SHL: bop = "sllv"; break; - case SHR: bop = "srlv"; break; - case AND: bop = "and"; swap = 1; break; - case XOR: bop = "xor"; swap = 1; break; - case OR: bop = "or"; swap = 1; break; - case NOR: bop = "nor"; break; - case EQ: bop = "seq"; break; - case NE: bop = "sne"; break; - case LT: bop = "slt"; break; - case GT: bop = "sgt"; break; - case LE: bop = "sle"; break; - case GE: bop = "sge"; break; + case MUL: bop = "mul"; rimm = 1; break; + case DIV: bop = "divu"; rimm = 1; break; + case MOD: bop = "rem"; rimm = 1; break; + case ADD: bop = "addu"; rimm = swap = 1; break; + case SUB: bop = "subu"; rimm = 1; break; + case SHL: bop = "sllv"; rimm = 1; break; + case SHR: bop = "srlv"; rimm = 1; break; + case AND: bop = "and"; rimm = swap = 1; break; + case XOR: bop = "xor"; rimm = swap = 1; break; + case OR: bop = "or"; rimm = swap = 1; break; + case NOR: bop = "nor"; rimm = 1; break; + case EQ: bop = "seq"; rimm = 1; break; + case NE: bop = "sne"; rimm = 1; break; + case LT: bop = "slt"; rimm = 1; break; + case GT: bop = "sgt"; rimm = 1; break; + case LE: bop = "sle"; rimm = 1; break; + case GE: bop = "sge"; rimm = 1; break; default: flag = 0; } if (flag) @@ -617,10 +617,10 @@ void mips_generate() { int rs, rt; int rd = i->dest->reg; if (rd < 0) rd = reg_v0; - if (swap) + if (rimm) { COpr_t t; - if (i->src1->kind == IMM) + if (swap && i->src1->kind == IMM) { t = i->src1; i->src1 = i->src2; @@ -634,15 +634,17 @@ void mips_generate() { case AND: bop = "andi"; break; case XOR: bop = "xori"; break; case OR: bop = "ori"; break; + case SHL: bop = "sll"; break; + case SHR: bop = "srl"; break; default: ; } rs = mips_to_reg(i->src1, reg_v0); printf("\t%s $%d, $%d, %d\n", bop, rd, rs, i->src2->info.imm); } - else swap = 0; + else rimm = 0; } - if (!swap) + if (!rimm) { rs = mips_to_reg(i->src1, reg_v0); rt = mips_to_reg(i->src2, reg_v1); |