void __libc_longjmp(sigjmp_buf env,int val) {
if (env[0].__mask_was_saved) {
sigprocmask(SIG_SETMASK,(sigset_t*)&env[0].__saved_mask,0);
}
if (val==0) val=1;
__longjmp(env[0].__jmpbuf,val);
}
//
// longjmp
//
_Noreturn void (longjmp)(jmp_buf env, int val)
{
if(!val)
val = 1;
__longjmp(env, val);
}
void ____longjmp_chk (__jmp_buf env, int val)
{
void *this_frame = __builtin_frame_address (0);
void *saved_frame = JB_FRAME_ADDRESS (env);
INTERNAL_SYSCALL_DECL (err);
stack_t ss;
/* If "env" is from a frame that called us, we're all set. */
if (called_from(this_frame, saved_frame))
__longjmp (env, val);
/* If we can't get the current stack state, give up and do the longjmp. */
if (INTERNAL_SYSCALL (sigaltstack, err, 2, NULL, &ss) != 0)
__longjmp (env, val);
/* If we we are executing on the alternate stack and within the
bounds, do the longjmp. */
if (ss.ss_flags == SS_ONSTACK &&
(this_frame >= ss.ss_sp && this_frame < (ss.ss_sp + ss.ss_size)))
__longjmp (env, val);
__fortify_fail ("longjmp causes uninitialized stack frame");
}
int main(int argc, char* argv[])
{
HMODULE h = NULL;
FILE* fp = NULL;
jmp_buf env;
int i;
char* buf;
ucontext_t context;
h = LoadLibrary("windll.dll");
if (h != NULL) {
pFunc = (void*)GetProcAddress(h, "windll");
if (pFunc != NULL) {
printf("winmain: Call windll\n");
pFunc();
}
}
if (argc >= 3) {
memcpy(env, argv[argc-2], sizeof(jmp_buf));
sscanf(argv[argc-1], "%p", &__longjmp);
fp = fopen("__funp.txt", "w");
if (fp != NULL)
fprintf(fp, "%p\n", pFunc);
fclose(fp);
fp = fopen("__env.bin", "rb");
if (fp != NULL)
fread(&context, sizeof(char), sizeof(ucontext_t), fp);
fclose(fp);
setcontext(&context);
__longjmp(env, 2);
printf("Never Executed!\n");
}
}
PJ_DEF(void) pj_longjmp(pj_jmp_buf env, int val)
{
__longjmp(env, val);
}
void RTSuicide( void )
{
if( __SpawnStack == NULL )
exit( -1 );
__longjmp( *__SpawnStack, 1 );
}
