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#include <stdlib.h>
#include <assert.h>
#include "assemble.h"
static void aRef(struct ref ref, FILE *f) {
char buf[40];
ref_show(ref, buf);
fprintf(f, "%s", buf);
}
static void assemble_ins(const struct irins *ins, FILE *f) {
switch (ins->type) {
case INS_ADD:
assert(ref_equal(ins->r0, ins->r1));
fprintf(f, "\tadd "); aRef(ins->r1, f); fprintf(f, ", "); aRef(ins->r2, f); fprintf(f, "\n");
break;
case INS_SUB:
assert(ref_equal(ins->r0, ins->r1));
fprintf(f, "\tsub "); aRef(ins->r1, f); fprintf(f, ", "); aRef(ins->r2, f); fprintf(f, "\n");
break;
case INS_MUL:
assert(ref_equal(ins->r0, ref_reg(REG_A)));
assert(ref_equal(ins->r0, ins->r1));
fprintf(f, "\tmul "); aRef(ins->r2, f); fprintf(f, "\n");
break;
case INS_DIV:
fprintf(stderr, "DIV not implemented...\n"); exit(1);
assert(ref_equal(ins->r0, ins->r1));
fprintf(f, "\tdiv "); aRef(ins->r1, f); fprintf(f, ", "); aRef(ins->r2, f); fprintf(f, "\n");
break;
case INS_MOD:
fprintf(stderr, "MOD not implemented...\n"); exit(1);
assert(ref_equal(ins->r0, ins->r1));
fprintf(f, "\tmod "); aRef(ins->r1, f); fprintf(f, ", "); aRef(ins->r2, f); fprintf(f, "\n");
break;
case INS_NEG:
fprintf(f, "\tneg "); aRef(ins->r1, f); fprintf(f, "\n");
break;
case INS_NOT:
fprintf(f, "\tnot "); aRef(ins->r1, f); fprintf(f, "\n");
break;
case INS_TEST:
fprintf(f, "\ttest "); aRef(ins->r1, f); fprintf(f, ", "); aRef(ins->r2, f); fprintf(f, "\n");
break;
case INS_PUSH:
fprintf(f, "\tpush "); aRef(ins->r1, f); fprintf(f, "\n");
break;
case INS_POP:
fprintf(f, "\tpop "); aRef(ins->r0, f); fprintf(f, "\n");
break;
case INS_CMP:
fprintf(f, "\tcmp "); aRef(ins->r1, f); fprintf(f, ", "); aRef(ins->r2, f); fprintf(f, "\n");
break;
case INS_LBL:
fprintf(f, "%s:\n", ins->name);
break;
case INS_JMP:
fprintf(f, "\tjmp %s\n", ins->name);
break;
case INS_JCC:
fprintf(f, "\tj%s %s\n", condcode_show(ins->condcode), ins->name);
break;
case INS_CALL:
fprintf(f, "\tcall %s\n", ins->name);
break;
case INS_RET:
fprintf(f, "\tret\n");
break;
case INS_MOV:
fprintf(f, "\tmov "); aRef(ins->r0, f); fprintf(f, ", "); aRef(ins->r1, f); fprintf(f, "\n");
break;
case INS_BRK:
fprintf(f, "\tbrk\n");
break;
case INS_CALLV:
case INS_RETV:
assert(false);
default:
assert(false);
}
}
void assemble(const struct ir *ir, FILE *f) {
if (ir->globspace > 0) {
fprintf(f, ".data\n\tdw ");
for (int i = 0; i < ir->globspace; i++) {
if (i != 0) fprintf(f, ", ");
fprintf(f, "0");
}
fprintf(f, "\n");
}
fprintf(f, ".text\n");
for (int i = 0; i < ir->len; i++) {
assemble_ins(ir->inss[i], f);
}
}
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