BOOL
OSRunThread(OSThread *thread, ThreadEntryPoint entry, uint32_t argc, p32<void> argv)
{
BOOL result = false;
OSLockScheduler();
if (OSIsThreadTerminated(thread)) {
InitialiseThreadState(thread, entry, argc, argv);
OSResumeThreadNoLock(thread, 1);
OSRescheduleNoLock();
}
OSUnlockScheduler();
return result;
}
void _start()
{
asm(
"lis %r1, 0x1ab5 ;"
"ori %r1, %r1, 0xd138 ;"
);
unsigned int coreinit_handle, gx2_handle;
OSDynLoad_Acquire("coreinit", &coreinit_handle);
OSDynLoad_Acquire("gx2", &gx2_handle);
//OS Memory functions
void*(*memset)(void * dest, unsigned int value, unsigned int bytes);
void*(*OSAllocFromSystem)(unsigned int size, int align);
void(*OSFreeToSystem)(void *ptr);
//IM functions
int(*IM_Open)();
int(*IM_Close)(int fd);
int(*IM_SetDeviceState)(int fd, void *mem, int state, int a, int b);
//OS Memory functions
OSDynLoad_FindExport(coreinit_handle, 0, "memset", &memset);
OSDynLoad_FindExport(coreinit_handle, 0, "OSAllocFromSystem", &OSAllocFromSystem);
OSDynLoad_FindExport(coreinit_handle, 0, "OSFreeToSystem", &OSFreeToSystem);
//IM functions
OSDynLoad_FindExport(coreinit_handle, 0, "IM_Open", &IM_Open);
OSDynLoad_FindExport(coreinit_handle, 0, "IM_Close", &IM_Close);
OSDynLoad_FindExport(coreinit_handle, 0, "IM_SetDeviceState", &IM_SetDeviceState);
//Restart system to get lib access
int fd = IM_Open();
void *mem = OSAllocFromSystem(0x100, 64);
memset(mem, 0, 0x100);
//set restart flag to force quit browser
IM_SetDeviceState(fd, mem, 3, 0, 0);
IM_Close(fd);
OSFreeToSystem(mem);
//wait a bit for browser end
unsigned int t1 = 0x1FFFFFFF;
while(t1--) ;
/* Get the framebuffer of the TV or DRC */
void(*GX2SwapScanBuffers)();
OSDynLoad_FindExport(gx2_handle, 0, "GX2SwapScanBuffers", &GX2SwapScanBuffers);
unsigned char *abuseFunc = (unsigned char*)GX2SwapScanBuffers;
unsigned short f_hi = *(unsigned short*)(abuseFunc+0x12);
unsigned short f_lo = *(unsigned short*)(abuseFunc+0x16);
unsigned int gx2settingBase = (((f_lo & 0x8000) ? (f_hi-1) : f_hi) << 16) | f_lo;
unsigned int args[2];
args[0] = *((unsigned int*)(gx2settingBase + 0x304));
args[1] = *((unsigned int*)(gx2settingBase + 0x304 + 0x20));
int(*OSGetCoreId)();
OSDynLoad_FindExport(coreinit_handle, 0, "OSGetCoreId", &OSGetCoreId);
void(*OSTestThreadCancel)();
OSDynLoad_FindExport(coreinit_handle, 0, "OSTestThreadCancel", &OSTestThreadCancel);
void(*GX2Shutdown)();
OSDynLoad_FindExport(gx2_handle, 0, "GX2Shutdown", &GX2Shutdown);
int(*GX2GetMainCoreId)();
OSDynLoad_FindExport(gx2_handle, 0, "GX2GetMainCoreId", &GX2GetMainCoreId);
/* Prepare for our own death */
void*(*OSGetCurrentThread)();
OSDynLoad_FindExport(coreinit_handle, 0, "OSGetCurrentThread", &OSGetCurrentThread);
void *myBorkedThread = OSGetCurrentThread();
int (*OSSuspendThread)(void *thread);
OSDynLoad_FindExport(coreinit_handle, 0, "OSSuspendThread", &OSSuspendThread);
/* Prepare for thread startups */
int (*OSCreateThread)(void *thread, void *entry, int argc, void *args, unsigned int stack, unsigned int stack_size, int priority, unsigned short attr);
int (*OSResumeThread)(void *thread);
int (*OSIsThreadTerminated)(void *thread);
OSDynLoad_FindExport(coreinit_handle, 0, "OSCreateThread", &OSCreateThread);
OSDynLoad_FindExport(coreinit_handle, 0, "OSResumeThread", &OSResumeThread);
OSDynLoad_FindExport(coreinit_handle, 0, "OSIsThreadTerminated", &OSIsThreadTerminated);
/* Allocate a stack for the thread */
unsigned int stack = (unsigned int) OSAllocFromSystem(0x1000, 0x10);
stack += 0x1000;
/* Create the thread */
void *thread = OSAllocFromSystem(OSTHREAD_SIZE, 8);
if(OSGetCoreId() != GX2GetMainCoreId()) //needed for access without crashing
{
int ret = OSCreateThread(thread, GX2Shutdown, 0, (void*)0, stack, 0x1000, 0, 0x10 | (1<<GX2GetMainCoreId()));
if (ret == 0)
OSFatal("Failed to create thread");
/* Schedule it for execution */
OSResumeThread(thread);
while(OSIsThreadTerminated(thread) == 0) ;
}
else //same core, easy
GX2Shutdown();
//current thread is broken, switch to a working one in core 1
int ret = OSCreateThread(thread, myGXthread, 2, args, stack, 0x1000, 0, 0xA);
if (ret == 0)
OSFatal("Failed to create thread");
/* Schedule it for execution */
OSResumeThread(thread);
/* SO UGLY but it works magically */
while(1) ;
//would be better but again, crashes 5.3.2
//OSSuspendThread(myBorkedThread);
//OSFatal("I am still not dead!");
}
