int NaClAppThreadSpawn(struct NaClApp *nap,
uintptr_t usr_entry,
uintptr_t usr_stack_ptr,
uint32_t user_tls1,
uint32_t user_tls2) {
struct NaClAppThread *natp = NaClAppThreadMake(nap, usr_entry, usr_stack_ptr,
user_tls1, user_tls2);
if (natp == NULL) {
return 0;
}
/*
* We set host_thread_is_defined assuming, for now, that
* NaClThreadCtor() will succeed.
*/
natp->host_thread_is_defined = 1;
if (!NaClThreadCtor(&natp->host_thread, NaClAppThreadLauncher, (void *) natp,
NACL_KERN_STACK_SIZE)) {
/*
* No other thread saw the NaClAppThread, so it is OK that
* host_thread was not initialized despite host_thread_is_defined
* being set.
*/
natp->host_thread_is_defined = 0;
NaClAppThreadDelete(natp);
return 0;
}
return 1;
}
int main(int argc, char **argv) {
struct NaClApp app;
struct NaClApp *nap = &app;
struct NaClSyscallTableEntry syscall_table[NACL_MAX_SYSCALLS] = {{0}};
int index;
int use_separate_thread = 0;
for (index = 0; index < NACL_MAX_SYSCALLS; index++) {
syscall_table[index].handler = NotImplementedDecoder;
}
syscall_table[TEST_SYSCALL_INVOKE].handler = MySyscallInvoke;
syscall_table[TEST_SYSCALL_EXIT].handler = MySyscallExit;
NaClAllModulesInit();
CHECK(NaClAppWithSyscallTableCtor(&app, syscall_table));
CHECK(NaClAppLoadFileFromFilename(&app, argv[1]) == LOAD_OK);
struct NaClAppThread *natp;
uintptr_t stack_ptr = NaClGetInitialStackTop(nap);
/* Ensure the stack pointer is suitably aligned. */
stack_ptr &= ~NACL_STACK_ALIGN_MASK;
stack_ptr -= NACL_STACK_PAD_BELOW_ALIGN;
/* TODO(mseaborn): Make this interface more straightforward to use. */
stack_ptr = NaClSysToUserStackAddr(nap, NaClUserToSys(nap, stack_ptr));
natp = NaClAppThreadMake(nap, nap->initial_entry_pt, stack_ptr, 0, 0);
CHECK(natp != NULL);
NaClAppThreadLauncher(natp);
printf("game over\n");
return 1;
}
