Popn_Tools/popnhax
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fix hidden is offset

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CrazyRedMachine 2024-10-02 21:17:09 +02:00
parent 145c52f83c
commit 8326623306
1 changed files with 65 additions and 15 deletions
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80
popnhax/dllmain.cc
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@ -2828,6 +2828,40 @@ static bool get_addr_hd_timing(uint32_t *res)
return true;
}
void (*real_commit_options_new)();
void hidden_is_offset_commit_options_new()
{
/* game goes through this hook twice per commit, so we need to be careful */
__asm("add eax, 0x2D\n"); //hidden value offset
__asm("push ebx\n");
__asm("movzx ebx, byte ptr [eax]\n");
__asm("or [_g_masked_hidden], ebx\n"); /* save to restore display when using result_screen_show_offset patch */
__asm("pop ebx\n");
__asm("cmp byte ptr [eax], 1\n");
__asm("jne call_real_commit_new\n");
/* disable hidden ingame */
__asm("mov byte ptr [eax], 0\n");
/* flag timing for update */
__asm("mov dword ptr [_g_timing_require_update], 1\n");
/* write into timing offset */
__asm("push ebx\n");
__asm("push eax\n");
__asm("movsx eax, word ptr [eax+1]\n");
__asm("neg eax\n");
__asm("mov ebx, %0\n"::"m"(g_timing_addr));
__asm("mov [ebx], eax\n");
__asm("pop eax\n");
__asm("pop ebx\n");
/* quit */
__asm("call_real_commit_new:\n");
__asm("sub eax, 0x2D\n");
real_commit_options_new();
}
void (*real_commit_options)();
void hidden_is_offset_commit_options()
{
@ -2874,26 +2908,42 @@ static bool patch_hidden_is_offset()
/* patch option commit to store hidden value directly as offset */
{
/* find option commit function (unilab) */
uint8_t shift = 6;
int64_t pattern_offset = _search(data, dllSize, "\x03\xC7\x8D\x44\x01\x2A\x89\x10", 8, 0);
if (pattern_offset == -1) {
/* wasn't found, look for older function */
uint8_t shift;
int64_t pattern_offset;
uint64_t patch_addr;
if (config.game_version == 27)
{
shift = 6;
pattern_offset = _search(data, dllSize, "\x03\xC7\x8D\x44\x01\x2A\x89\x10", 8, 0);
}
else if (config.game_version < 27)
{
pattern_offset = _search(data, dllSize, "\x0F\xB6\xC3\x03\xCF\x8D", 6, 0);
shift = 14;
}
else
{
shift = 25;
pattern_offset = _search(data, dllSize, "\x6B\xC9\x1A\x03\xC6\x8B\x74\x24\x10", 9, 0);
patch_addr = (int64_t)data + pattern_offset + shift;
if (pattern_offset == -1) {
LOG("popnhax: hidden is offset: cannot find address\n");
return false;
}
#if DEBUG == 1
LOG("popnhax: hidden is offset: appears to be kaimei or less\n");
#endif
_MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hidden_is_offset_commit_options_new,
(void **)&real_commit_options_new);
}
uint64_t patch_addr = (int64_t)data + pattern_offset + shift;
_MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hidden_is_offset_commit_options,
(void **)&real_commit_options);
if (pattern_offset == -1) {
LOG("popnhax: hidden is offset: cannot find address\n");
return false;
}
patch_addr = (int64_t)data + pattern_offset + shift;
if ( config.game_version <= 27 )
{
_MH_CreateHook((LPVOID)(patch_addr), (LPVOID)hidden_is_offset_commit_options,
(void **)&real_commit_options);
}
}
/* turn "set offset" into an elaborate "sometimes add to offset" to use our hidden+ value as adjust */