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#include <stdio.h>
#include <stddef.h>
#include "codegen/nasm.h"
static void emit_consts(struct Program* program, FILE* out)
{
for (size_t i = 0; i < program->const_count; i += 1)
{
struct ConstDecl decl = program->consts[i];
fprintf(out, "%.*s equ %.*s\n",
(int)decl.name.length, decl.name.start,
(int)decl.value.length, decl.value.start);
}
}
static void emit_data(struct Program* program, FILE* out)
{
fprintf(out, "section .data\n");
for (size_t i = 0; i < program->data_count; i += 1)
{
struct DataDecl decl = program->data_decls[i];
// the value lexeme keeps its surrounding double quotes; NASM backtick
// strings interpret the same escapes, so re-wrap the inner content
fprintf(out, "%.*s: db `%.*s`\n",
(int)decl.name.length, decl.name.start,
(int)(decl.value.length - 2), decl.value.start + 1);
fprintf(out, ".len equ $ - %.*s\n",
(int)decl.name.length, decl.name.start);
}
}
void generate_nasm(struct Program* program, FILE* out)
{
if (program->const_count > 0)
{
emit_consts(program, out);
fprintf(out, "\n");
}
emit_data(program, out);
fprintf(out, "\n");
fprintf(out, "section .text\n");
fprintf(out, "global _start\n");
}
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