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Further compatibility fix for language/region emulation, now works with games like Kirby Triple Deluxe

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Aurora 2016-04-15 17:53:40 +02:00
parent c60ef7fe82
commit 615cf81a9f
1 changed files with 18 additions and 5 deletions
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19
injector/source/patcher.c
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@ -226,13 +226,26 @@ static void patchCfgGetLanguage(u8 *code, u32 size, u8 languageId, u8 *CFGU_GetC
{
for(u8 *instr = languageBlkIdPos - 8; instr >= languageBlkIdPos - 0x1008 && instr >= code + 4; instr -= 4) //Should be enough
{
if(*(instr + 3) == 0xEB) //We're looking for BL
if(instr[3] == 0xEB) //We're looking for BL
{
u32 low24 = (*(u32 *)instr & 0x00FFFFFF) << 2;
u8 *calledFunction = instr;
u32 i = 0,
found;
do
{
u32 low24 = (*(u32 *)calledFunction & 0x00FFFFFF) << 2;
u32 signMask = (u32)(-(low24 >> 25)) & 0xFC000000; //Sign extension
s32 offset = (s32)(low24 | signMask) + 8; //Branch offset + 8 for prefetch
if(instr + offset >= CFGU_GetConfigInfoBlk2_startPos - 4 && instr + offset <= CFGU_GetConfigInfoBlk2_endPos)
calledFunction += offset;
found = calledFunction >= CFGU_GetConfigInfoBlk2_startPos - 4 && calledFunction <= CFGU_GetConfigInfoBlk2_endPos;
i++;
}
while(i < 2 && !found && calledFunction[3] == 0xEA);
if(found)
{
*((u32 *)instr - 1) = 0xE3A00000 | languageId; // mov r0, sp => mov r0, =languageId
*(u32 *)instr = 0xE5CD0000; // bl CFGU_GetConfigInfoBlk2 => strb r0, [sp]