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asm: implement an asm parser and emitter

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This commit is contained in:
max 🍓
2024-12-13 12:26:01 +00:00
parent 0a8d913fdd
commit 5fe1a21978
19 changed files with 1106 additions and 49 deletions
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22
asm/assembler/assembler.c
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@@ -8,9 +8,11 @@
#include "assembler.h"
extern struct assembler_scope_type class_scope_type;
extern struct assembler_scope_type constpool_scope_type;
static const struct assembler_scope_type *scope_types[] = {
[IVY_ASM_SCOPE_CLASS] = &class_scope_type,
[IVY_ASM_SCOPE_CONSTPOOL] = &constpool_scope_type,
};
static const size_t nr_scope_types = sizeof scope_types / sizeof scope_types[0];
@@ -44,9 +46,14 @@ enum ivy_status ivy_assembler_create(FILE *fp, struct ivy_assembler **as)
out->as_xdat = tmpfile();
struct ivy_bin_header header = {0};
header.h_magic = b_i32_htob(0xAABBCCDD);
fseek(fp, 0, SEEK_SET);
fwrite(&header, sizeof header, 1, fp);
out->as_data_offset = sizeof header;
char blank[16] = {0};
assembler_write_extended_data(out, blank, sizeof blank);
*as = out;
return IVY_OK;
@@ -66,7 +73,7 @@ enum ivy_status ivy_assembler_finish(struct ivy_assembler *as)
size_t xdat_len = as->as_next_xdata_key;
fseek(as->as_xdat, 0, SEEK_SET);
char *buf = malloc(buf_len);
unsigned char *buf = malloc(buf_len);
if (!buf) {
return IVY_ERR_NO_MEMORY;
@@ -81,7 +88,7 @@ enum ivy_status ivy_assembler_finish(struct ivy_assembler *as)
while (1) {
size_t r = fread(buf, 1, buf_len, as->as_xdat);
fwrite(buf, 1, r, as->as_xdat);
fwrite(buf, 1, r, as->as_data);
as->as_data_offset += r;
if (r == buf_len) {
@@ -98,7 +105,7 @@ enum ivy_status ivy_assembler_finish(struct ivy_assembler *as)
free(buf);
unsigned int nr_table_entries = 0;
unsigned short nr_table_entries = 0;
struct ivy_bin_header header = {0};
header.h_table_offset = b_i64_htob(as->as_data_offset);
@@ -122,7 +129,7 @@ enum ivy_status ivy_assembler_finish(struct ivy_assembler *as)
fwrite(&xdat, 1, sizeof xdat, as->as_data);
nr_table_entries++;
header.h_table_len = b_i16_htob(nr_table_entries * sizeof(struct ivy_bin_table_entry));
header.h_table_len = b_i16_htob(nr_table_entries);
fseek(as->as_data, 0, SEEK_SET);
fwrite(&header, 1, sizeof header, as->as_data);
@@ -153,6 +160,11 @@ extended_data_key assembler_write_extended_data(struct ivy_assembler *as, const
return key;
}
struct assembler_scope *assembler_get_scope(struct ivy_assembler *as)
{
return as->as_scope;
}
enum ivy_status ivy_assembler_begin_scope(
struct ivy_assembler *as, enum ivy_assembler_scope_type type,
ivy_assembler_attrib_table attrib)
@@ -175,6 +187,8 @@ enum ivy_status ivy_assembler_begin_scope(
return IVY_ERR_NO_MEMORY;
}
memset(scope, 0x0, type_info->s_scope_size);
while ((as->as_data_offset % 16) != 0) {
fputc(0, as->as_data);
as->as_data_offset++;