CrazyRedMachine/popnhax
1
0
Fork 0
forked from Popn_Tools/popnhax
Code Issues Pull Requests Packages Projects Releases Wiki Activity

wip

Browse Source
This commit is contained in:
CrazyRedMachine 2023-07-20 14:11:04 +02:00
parent 3fc1a0a7e0
commit d49cced163
1 changed files with 12 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
popnhax/dllmain.cc
View File

@ -35,7 +35,7 @@ const char *g_config_fn = NULL;
FILE *g_log_fp = NULL; FILE *g_log_fp = NULL;
#define DEBUG 0 #define DEBUG 1
#if DEBUG == 1 #if DEBUG == 1
double g_multiplier = 1.; double g_multiplier = 1.;
@ -1912,7 +1912,7 @@ bool g_enhanced_poll_ready = false;
int (*usbPadRead)(uint32_t*); int (*usbPadRead)(uint32_t*);
int (*usbPadReadLast)(unsigned char*); int (*usbPadReadLast)(unsigned char*);
#if DEBUG >=2 #if DEBUG >=1
FILE *debug_fp; FILE *debug_fp;
#endif #endif
@ -1921,7 +1921,7 @@ uint8_t g_debounce = 0;
int32_t g_button_state[9] = {0}; int32_t g_button_state[9] = {0};
static unsigned int __stdcall enhanced_polling_proc(void *ctx) static unsigned int __stdcall enhanced_polling_proc(void *ctx)
{ {
#if DEBUG >=2 #if DEBUG >=1
debug_fp = fopen("polling.log", "w"); debug_fp = fopen("polling.log", "w");
#endif #endif
HMODULE hinstLib = GetModuleHandleA("ezusb.dll"); HMODULE hinstLib = GetModuleHandleA("ezusb.dll");
@ -2053,9 +2053,9 @@ uint8_t g_poll_index = 0;
uint32_t g_poll_offset = 0; uint32_t g_poll_offset = 0;
void (*real_enhanced_poll)(); void (*real_enhanced_poll)();
void patch_enhanced_poll() { void patch_enhanced_poll() {
/* eax contains button being checked [0-8] */ /* eax contains button being checked [0-8]
/* esi contains delta about to be evaluated */ * esi contains delta about to be evaluated
/* we need to do esi -= pressed_since[%eax]; to fix the offset accurately */ * we need to do esi -= pressed_since[%eax]; to fix the offset accurately */
__asm("nop\n"); __asm("nop\n");
__asm("nop\n"); __asm("nop\n");
__asm("mov %0, al\n":"=m"(g_poll_index): :); __asm("mov %0, al\n":"=m"(g_poll_index): :);
@ -2099,7 +2099,7 @@ static bool patch_enhanced_polling(uint8_t debounce)
} }
/* patch call to usbPadRead to redirect to our own usbPadReadHook() */ /* patch calls to usbPadRead and usbPadReadLast */
{ {
int64_t pattern_offset = search(data, dllSize, "\x83\xC4\x04\x5D\xC3\xCC\xCC", 7, 0); int64_t pattern_offset = search(data, dllSize, "\x83\xC4\x04\x5D\xC3\xCC\xCC", 7, 0);
if (pattern_offset == -1) { if (pattern_offset == -1) {
@ -2115,11 +2115,13 @@ static bool patch_enhanced_polling(uint8_t debounce)
void *addr = (void *)&usbPadReadHook_addr; void *addr = (void *)&usbPadReadHook_addr;
uint32_t as_int = (uint32_t)addr; uint32_t as_int = (uint32_t)addr;
// game will call usbPadReadHook instead of real usbPadRead (function call hook in order not to interfere with tools)
uint64_t patch_addr = (int64_t)data + pattern_offset - 0x04; // usbPadRead function address uint64_t patch_addr = (int64_t)data + pattern_offset - 0x04; // usbPadRead function address
patch_memory(patch_addr, (char*)&as_int, 4); // game will call usbPadReadHook instead of real usbPadRead patch_memory(patch_addr, (char*)&as_int, 4);
// don't call usbPadReadLast as it messes with the 1000Hz polling, we're running our own debouncing instead now
patch_addr = (int64_t)data + pattern_offset - 20; patch_addr = (int64_t)data + pattern_offset - 20;
patch_memory(patch_addr, (char*)"\x90\x90\x90\x90\x90\x90", 6); // don't call usbPadReadLast patch_memory(patch_addr, (char*)"\x90\x90\x90\x90\x90\x90", 6);
} }