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Make minor improvements

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This commit is contained in:
Justine Tunney 2020-12-23 23:42:56 -08:00
parent 04caf6f9ad
commit 95b142e4e5
95 changed files with 3818 additions and 2760 deletions
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13
third_party/chibicc/codegen.c vendored
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@ -616,11 +616,9 @@ static bool has_flonum2(Type *ty) {
static void push_struct(Type *ty) {
int sz = ROUNDUP(ty->size, 8);
println("\tsub\t$%d,%%rsp", sz);
println("\tmov\t%%rsp,%%rdi");
depth += sz / 8;
for (int i = 0; i < ty->size; i++) {
println("\tmov\t%d(%%rax),%%r10b", i);
println("\tmov\t%%r10b,%d(%%rsp)", i);
}
gen_memcpy(ty->size);
}
static void push_args2(Node *args, bool first_pass) {
@ -781,7 +779,7 @@ static void copy_ret_buffer(Obj *var) {
}
} else {
char *reg1 = (gp == 0) ? "%al" : "%dl";
char *reg2 = (gp == 0) ? "%rax" : "%rdx";
char *reg2 = (gp == 0) ? "%rax" : "%rdx"; /* TODO: isn't ax clobbered? */
for (int i = 8; i < MIN(16, ty->size); i++) {
println("\tmov\t%s,%d(%%rbp)", reg1, var->offset + i);
println("\tshr\t$8,%s", reg2);
@ -2241,7 +2239,7 @@ static void emit_data(Obj *prog) {
}
print_align(align);
println("\t.type\t%s,@object", nameof(var));
println("\t.size\t%s,%d", nameof(var), var->ty->size);
/* println("\t.size\t%s,%d", nameof(var), var->ty->size); */
println("%s:", nameof(var));
if (var->init_data) {
int pos = 0;
@ -2425,7 +2423,7 @@ static void emit_text(Obj *prog) {
emitlin("\tleave");
emitlin("\tret");
}
println("\t.size\t%s,.-%s", nameof(fn), nameof(fn));
/* println("\t.size\t%s,.-%s", nameof(fn), nameof(fn)); */
if (fn->is_constructor) {
emitlin("\t.section .ctors,\"aw\",@progbits");
emitlin("\t.align\t8");
@ -2448,6 +2446,7 @@ static void emit_staticasms(StaticAsm *a) {
void codegen(Obj *prog, FILE *out) {
output_stream = out;
File **files = get_input_files();
println("# -*- mode:unix-assembly -*-");
for (int i = 0; files[i]; i++) {
println("\t.file\t%d %`'s", files[i]->file_no, files[i]->name);
}