mirror of
https://github.com/wiidev/usbloadergx.git
synced 2024-07-06 18:01:49 +02:00
f0ca11506b
WIP Patches will be only accepted in the following format (let's not invent thousands of different formats): In 3x 4 bytes columns separated by a space (no ":" allowed) offset | original address | overwrite address Example for PoP: 007AAC6A 7A6B6F6A 6F6A7A6B 007AAC75 7C7A6939 69397C7A ... The original address is compared before patching and is not patched if it doesn't match. You can see the confirmation or fail of a patch on the Gecko Output. *A few fix ups in different places
135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
#include <gccore.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "gecko.h"
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#include "settings/cfg.h"
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typedef struct
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{
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u32 offset;
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u32 srcaddress;
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u32 dstaddress;
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} WIP_Code;
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static WIP_Code * CodeList = NULL;
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static u32 CodesCount = 0;
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static u32 ProcessedLength = 0;
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static u32 Counter = 0;
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void do_wip_code(u8 * dst, u32 len)
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{
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if(!CodeList)
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return;
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if(Counter < 3)
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{
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Counter++;
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return;
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}
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int i = 0;
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int n = 0;
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int offset = 0;
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for(i = 0; i < CodesCount; i++)
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{
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for(n = 0; n < 4; n++)
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{
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offset = CodeList[i].offset+n-ProcessedLength;
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if(offset < 0 || offset >= len)
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continue;
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if(dst[offset] == ((u8 *)&CodeList[i].srcaddress)[n])
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{
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dst[offset] = ((u8 *)&CodeList[i].dstaddress)[n];
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gprintf("WIP: %08X Address Patched.\n", CodeList[i].offset+n);
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}
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else
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{
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gprintf("WIP: %08X Address does not match with WIP entrie.\n", CodeList[i].offset+n);
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gprintf("Destination: %02X | Should be: %02X.\n", dst[offset], ((u8 *)&CodeList[i].srcaddress)[n]);
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}
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}
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}
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ProcessedLength += len;
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Counter++;
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}
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void wip_reset_counter()
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{
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ProcessedLength = 0;
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//alternative dols don't need a skip. only main.dol.
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Counter = 3;
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}
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void free_wip()
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{
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if(CodeList)
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free(CodeList);
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CodeList = NULL;
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CodesCount = 0;
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ProcessedLength = 0;
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}
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int load_wip_code(u8 *gameid)
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{
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char filepath[150];
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char GameID[8];
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memset(GameID, 0, sizeof(GameID));
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memcpy(GameID, gameid, 6);
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snprintf(filepath, sizeof(filepath), "%s%s.wip", Settings.WipCodepath, GameID);
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FILE * fp = fopen(filepath, "rb");
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if (!fp)
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{
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memset(GameID, 0, sizeof(GameID));
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memcpy(GameID, gameid, 3);
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snprintf(filepath, sizeof(filepath), "%s%s.wip", Settings.WipCodepath, GameID);
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fp = fopen(filepath, "rb");
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}
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if (!fp)
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return -1;
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char line[255];
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gprintf("\nLoading WIP code from %s.\n", filepath);
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while (fgets(line, sizeof(line), fp))
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{
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if (line[0] == '#') continue;
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if(strlen(line) < 26) continue;
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u32 offset = (u32) strtoul(line, NULL, 16);
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u32 srcaddress = (u32) strtoul(line+9, NULL, 16);
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u32 dstaddress = (u32) strtoul(line+18, NULL, 16);
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if(!CodeList)
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CodeList = malloc(sizeof(WIP_Code));
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WIP_Code * tmp = realloc(CodeList, (CodesCount+1)*sizeof(WIP_Code));
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if(!tmp)
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{
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if(CodeList)
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free(CodeList);
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CodeList = NULL;
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fclose(fp);
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return -1;
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}
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CodeList = tmp;
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CodeList[CodesCount].offset = offset;
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CodeList[CodesCount].srcaddress = srcaddress;
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CodeList[CodesCount].dstaddress = dstaddress;
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CodesCount++;
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}
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fclose(fp);
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gprintf("\n");
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return 0;
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}
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