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IPS hints

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This commit is contained in:
Robin Jones 2024-03-15 23:17:27 +00:00
parent 9fb88b6022
commit 277a4cf20a
1 changed files with 38 additions and 10 deletions
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48
src/menu/rom_patcher.c
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@ -4,6 +4,22 @@
#include "rom_patcher.h"
typedef struct
{
uint32_t address; // The start address of the data to modify as big endian. NOTE: this is only 3 bytes.
uint16_t length; // The length of the following data (greater than zero) as big endian.
uint8_t *data; // The data to be written to "Address" (using length).
} ips_patch_record_t;
typedef struct
{
uint32_t address; // The start address of the data to modify as big endian. NOTE: this is only 3 bytes.
uint16_t zero_bytes; // The record length was zero, this determines the difference between ips_patch_record_t length.
uint16_t rle_byte_count; // Number of times to repeat the following byte as big endian.
uint8_t rle_byte; // The repeatitive byte to be written to "Address".
} ips_patch_record_rle_t;
rom_patcher_err_t apply_patch_type_bps(FIL *fil)
{
// https://github.com/Alcaro/Flips/blob/master/bps_spec.md
@ -13,8 +29,21 @@ rom_patcher_err_t apply_patch_type_bps(FIL *fil)
rom_patcher_err_t apply_patch_type_ips(FIL *fil)
{
// http://www.smwiki.net/wiki/IPS_file_format
return PATCH_ERR_INVALID;
// https://web.archive.org/web/20170624071240/http://www.smwiki.net:80/wiki/IPS_file_format
// Check the header is valid.
// UINT bytes_read = 0;
// UINT *buff = 0;
// f_read(fil, &buff, 1024, &bytes_read);
// if (&header != "PATCH") {
// return PATCH_ERR_INVALID;
// }
//ips_patch_record_t records;
//ips_patch_record_rle_t records_rle;
// FIXME: we are not yet doing the patch write!
return PATCH_OK;
}
rom_patcher_err_t apply_patch_type_aps(FIL *fil)
@ -128,32 +157,31 @@ rom_patcher_err_t rom_patcher_load_file (char *path)
// if (apsGetNextByte() != "PATCH"[i])return ERR_WRONG_IPS;
// }
// // if (aps_header[5] != 0 || aps_header[6] != 0 || aps_header[7] != 16 || aps_header[8] != 0 || aps_header[9] != 8)return ERR_WRONG_IPS2;
// asp_swap = 0;
// // for (i = 0; i < 5; i++)apsGetNextByte();
// while (aps_addr < len) {
// Get Address
// rom_addr = apsGetNextByte() << 16;
// rom_addr |= apsGetNextByte() << 8;
// rom_addr |= apsGetNextByte();
// get length
// block_len = apsGetNextByte() << 8;
// block_len |= apsGetNextByte();
// if (aps_resp)return aps_resp;
// if the length is zero
// if (block_len == 0) {
// get the rle length
// block_len = apsGetNextByte() << 8;
// block_len |= apsGetNextByte();
// get the rle value
// rle_val = apsGetNextByte();
// if (aps_resp)return aps_resp;
// apply the rle value while the rle length is valid
// while (block_len--) {
// apsSetRomByteRLE(rle_val);
// }