+// SPDX-License-Identifier: MIT
+
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <endian.h>
#include "hunk-reloc.h"
+#include "piscsi/piscsi-enums.h"
+#include "piscsi/piscsi.h"
+
+#ifdef FAKESTORM
+#define lseek64 lseek
+#endif
+#define DEBUG_SPAMMY(...)
+//#define DEBUG_SPAMMY printf
#define DEBUG(...)
//#define DEBUG printf
+#define BE(val) be32toh(val)
+#define BE16(val) be16toh(val)
+
#define READLW(a, b) fread(&a, 4, 1, b); a = be32toh(a);
#define READW(a, b) fread(&a, 2, 1, b); a = be16toh(a);
-uint32_t lw;
+uint32_t lw = 0;
+static uint32_t file_offset = 0, add_size = 0;
char *hunk_id_name(uint32_t index) {
switch (index) {
switch (index) {
case HUNKTYPE_HEADER:
- DEBUG("Processing hunk header.\n");
+ DEBUG("[HUNK_RELOC] Processing hunk HEADER.\n");
do {
READLW(discard, f);
if (discard) {
+ if (info->libnames[info->num_libs]) {
+ free(info->libnames[info->num_libs]);
+ info->libnames[info->num_libs] = NULL;
+ }
info->libnames[info->num_libs] = malloc(discard * 4);
fread(info->libnames[info->num_libs], discard, 4, f);
info->num_libs++;
} while (discard);
READLW(info->table_size, f);
- DEBUG("Table size: %d\n", info->table_size);
+ DEBUG("[HUNK_RELOC] [HEADER] Table size: %d\n", info->table_size);
READLW(info->first_hunk, f);
READLW(info->last_hunk, f);
info->num_hunks = (info->last_hunk - info->first_hunk) + 1;
- DEBUG("First: %d Last: %d Num: %d\n", info->first_hunk, info->last_hunk, info->num_hunks);
+ DEBUG("[HUNK_RELOC] [HEADER] First: %d Last: %d Num: %d\n", info->first_hunk, info->last_hunk, info->num_hunks);
+ if (info->hunk_sizes) {
+ free(info->hunk_sizes);
+ info->hunk_sizes = NULL;
+ }
+ if (info->hunk_offsets) {
+ free(info->hunk_offsets);
+ info->hunk_offsets = NULL;
+ }
info->hunk_sizes = malloc(info->num_hunks * 4);
info->hunk_offsets = malloc(info->num_hunks * 4);
for (uint32_t i = 0; i < info->table_size; i++) {
READLW(info->hunk_sizes[i], f);
- DEBUG("Hunk %d: %d (%.8X)\n", i, info->hunk_sizes[i] * 4, info->hunk_sizes[i] * 4);
+ DEBUG("[HUNK_RELOC] [HEADER] Hunk %d: %d (%.8X)\n", i, info->hunk_sizes[i] * 4, info->hunk_sizes[i] * 4);
}
+ info->header_size = (uint32_t)ftell(f) - file_offset;
+ DEBUG("[HUNK_RELOC] [HEADER] ~~~~~~~~~~~ Hunk HEADER size is %d ~~~~~~~~~~~~.\n", info->header_size);
return 0;
break;
case HUNKTYPE_CODE:
- DEBUG("Hunk %d: CODE.\n", info->current_hunk);
+ DEBUG("[HUNK_RELOC] Hunk %d: CODE.\n", info->current_hunk);
READLW(discard, f);
- info->hunk_offsets[info->current_hunk] = ftell(f);
- DEBUG("Code hunk size: %d (%.8X)\n", discard * 4, discard * 4);
+ info->hunk_offsets[info->current_hunk] = ftell(f) - file_offset;
+ DEBUG("[HUNK_RELOC] [CODE] Code hunk size: %d (%.8X)\n", discard * 4, discard * 4);
fseek(f, discard * 4, SEEK_CUR);
return 0;
break;
case HUNKTYPE_HUNK_RELOC32:
- DEBUG("Hunk %d: RELOC32.\n", info->current_hunk);
+ DEBUG("[HUNK_RELOC] Hunk %d: RELOC32.\n", info->current_hunk);
DEBUG("Processing Reloc32 hunk.\n");
do {
READLW(discard, f);
- if (discard) {
+ if (discard && discard != 0xFFFFFFFF) {
READLW(cur_hunk, f);
- DEBUG("Relocating %d offsets pointing to hunk %d.\n", discard, cur_hunk);
+ DEBUG("[HUNK_RELOC] [RELOC32] Relocating %d offsets pointing to hunk %d.\n", discard, cur_hunk);
for(uint32_t i = 0; i < discard; i++) {
READLW(offs32, f);
- DEBUG("#%d: @%.8X in hunk %d\n", i + 1, offs32, cur_hunk);
+ DEBUG_SPAMMY("[HUNK_RELOC] [RELOC32] #%d: @%.8X in hunk %d\n", i + 1, offs32, cur_hunk);
r[info->reloc_hunks].offset = offs32;
r[info->reloc_hunks].src_hunk = info->current_hunk;
r[info->reloc_hunks].target_hunk = cur_hunk;
return 0;
break;
case HUNKTYPE_SYMBOL:
- DEBUG("Hunk %d: SYMBOL.\n", info->current_hunk);
- DEBUG("Processing Symbol hunk.\n");
+ DEBUG("[HUNK_RELOC] Hunk %d: SYMBOL.\n", info->current_hunk);
+ DEBUG("[HUNK_RELOC] [SYMBOL] Processing Symbol hunk.\n");
READLW(discard, f);
do {
if (discard) {
memset(sstr, 0x00, 256);
fread(sstr, discard, 4, f);
READLW(discard, f);
- DEBUG("Symbol: %s - %.8X\n", sstr, discard);
+ DEBUG("[HUNK_RELOC] [SYMBOL] Symbol: %s - %.8X\n", sstr, discard);
}
READLW(discard, f);
} while (discard);
return 0;
break;
case HUNKTYPE_BSS:
- DEBUG("Hunk %d: BSS.\n", info->current_hunk);
+ DEBUG("[HUNK_RELOC] Hunk %d: BSS.\n", info->current_hunk);
READLW(discard, f);
- info->hunk_offsets[info->current_hunk] = ftell(f);
- DEBUG("Skipping BSS hunk. Size: %d\n", discard * 4);
+ info->hunk_offsets[info->current_hunk] = ftell(f) - file_offset;
+ DEBUG("[HUNK_RELOC] [BSS] Skipping BSS hunk. Size: %d\n", discard * 4);
+ add_size += (discard * 4);
return 0;
case HUNKTYPE_DATA:
- DEBUG("Hunk %d: DATA.\n", info->current_hunk);
+ DEBUG("[HUNK_RELOC] Hunk %d: DATA.\n", info->current_hunk);
READLW(discard, f);
- info->hunk_offsets[info->current_hunk] = ftell(f);
- DEBUG("Skipping data hunk. Size: %d.\n", discard * 4);
+ info->hunk_offsets[info->current_hunk] = ftell(f) - file_offset;
+ DEBUG("[HUNK_RELOC] [DATA] Skipping data hunk. Size: %d.\n", discard * 4);
fseek(f, discard * 4, SEEK_CUR);
return 0;
break;
case HUNKTYPE_END:
- DEBUG("END: Ending hunk %d.\n", info->current_hunk);
+ DEBUG("[HUNK_RELOC] END: Ending hunk %d.\n", info->current_hunk);
info->current_hunk++;
return 0;
break;
default:
- DEBUG("Unknown hunk type %.8X! Can't process!\n", index);
+ DEBUG("[!!!HUNK_RELOC] Unknown hunk type %.8X! Can't process!\n", index);
break;
}
uint32_t src = be32toh(*src_ptr);
uint32_t dst = src + i->base_offset + rel;
- DEBUG("%.8X -> %.8X\n", src, dst);
+ DEBUG_SPAMMY("[HUNK-RELOC] %.8X -> %.8X\n", src, dst);
*src_ptr = htobe32(dst);
}
-void process_hunks(FILE *in, struct hunk_info *h_info, struct hunk_reloc *r) {
+void process_hunks(FILE *in, struct hunk_info *h_info, struct hunk_reloc *r, uint32_t offset) {
READLW(lw, in);
- DEBUG("Hunk ID: %.8X (%s)\n", lw, hunk_id_name(lw));
+ DEBUG_SPAMMY("Hunk ID: %.8X (%s)\n", lw, hunk_id_name(lw));
+
+ file_offset = offset;
+ add_size = 0;
- while(!feof(in) && process_hunk(lw, h_info, in, r) != -1) {
+ while (!feof(in) && process_hunk(lw, h_info, in, r) != -1) {
READLW(lw, in);
if (feof(in)) goto end_parse;
DEBUG("Hunk ID: %.8X (%s)\n", lw, hunk_id_name(lw));
- DEBUG("File pos: %.8lX\n", ftell(in));
+ DEBUG("File pos: %.8lX\n", ftell(in) - file_offset);
}
end_parse:;
DEBUG("Done processing hunks.\n");
}
void reloc_hunks(struct hunk_reloc *r, uint8_t *buf, struct hunk_info *h_info) {
- for(uint32_t i = 0; i < h_info->reloc_hunks; i++) {
+ DEBUG("[HUNK-RELOC] Relocating %d offsets.\n", h_info->reloc_hunks);
+ for (uint32_t i = 0; i < h_info->reloc_hunks; i++) {
+ DEBUG_SPAMMY("[HUNK-RELOC] Relocating offset %d.\n", i);
reloc_hunk(&r[i], buf, h_info);
- DEBUG("Relocating offset %d.\n", i);
}
- DEBUG("Done relocating offsets.\n");
+ DEBUG("[HUNK-RELOC] Done relocating offsets.\n");
+}
+
+struct LoadSegBlock {
+ uint32_t lsb_ID;
+ uint32_t lsb_SummedLongs;
+ int32_t lsb_ChkSum;
+ uint32_t lsb_HostID;
+ uint32_t lsb_Next;
+ uint32_t lsb_LoadData[PISCSI_MAX_BLOCK_SIZE / 4];
+};
+#define LOADSEG_IDENTIFIER 0x4C534547
+
+int load_lseg(int fd, uint8_t **buf_p, struct hunk_info *i, struct hunk_reloc *relocs, uint32_t block_size) {
+ if (fd == -1)
+ return -1;
+
+ if (block_size == 0)
+ block_size = 512;
+
+ uint8_t *block = malloc(block_size);
+ uint32_t next_blk = 0;
+ struct LoadSegBlock *lsb = (struct LoadSegBlock *)block;
+
+ read(fd, block, block_size);
+ if (BE(lsb->lsb_ID) != LOADSEG_IDENTIFIER) {
+ DEBUG("[LOAD_LSEG] Attempted to load a non LSEG-block: %.8X", BE(lsb->lsb_ID));
+ goto fail;
+ }
+
+ char *filename = "data/lsegout.bin";
+ FILE *out = fopen(filename, "wb+");
+
+ DEBUG("[LOAD_LSEG] LSEG data:\n");
+ DEBUG("[LOAD_LSEG] Longs: %d HostID: %d\n", BE(lsb->lsb_SummedLongs), BE(lsb->lsb_HostID));
+ DEBUG("[LOAD_LSEG] Next: %d LoadData: %p\n", BE(lsb->lsb_Next), (void *)lsb->lsb_LoadData);
+ next_blk = BE(lsb->lsb_Next);
+ do {
+ next_blk = BE(lsb->lsb_Next);
+ fwrite(lsb->lsb_LoadData, 1, block_size - 20, out);
+ lseek64(fd, next_blk * block_size, SEEK_SET);
+ read(fd, block, block_size);
+ } while (next_blk != 0xFFFFFFFF);
+
+ uint32_t file_size = ftell(out);
+ fseek(out, 0, SEEK_SET);
+ uint8_t *buf = malloc(file_size + 1024);
+ fread(buf, file_size, 1, out);
+ fseek(out, 0, SEEK_SET);
+ process_hunks(out, i, relocs, 0x0);
+
+ fclose(out);
+ *buf_p = buf;
+ i->byte_size = file_size;
+ i->alloc_size = file_size + add_size;
+
+ return 0;
+
+fail:;
+ if (block)
+ free(block);
+
+ return -1;
+}
+
+int load_fs(struct piscsi_fs *fs, char *dosID) {
+ char filename[256];
+ memset(filename, 0x00, 256);
+ sprintf(filename, "./data/fs/%c%c%c.%d", dosID[0], dosID[1], dosID[2], dosID[3]);
+
+ FILE *in = fopen(filename, "rb");
+ if (in == NULL)
+ return -1;
+
+ fseek(in, 0, SEEK_END);
+ uint32_t file_size = ftell(in);
+ fseek(in, 0, SEEK_SET);
+
+ fs->binary_data = malloc(file_size);
+ fread(fs->binary_data, file_size, 1, in);
+ fseek(in, 0, SEEK_SET);
+ process_hunks(in, &fs->h_info, fs->relocs, 0x0);
+ fs->h_info.byte_size = file_size;
+ fs->h_info.alloc_size = file_size + add_size;
+
+ fclose(in);
+
+ return 0;
}
projects / pistorm / blobdiff