make QueryPerformanceCounter() success

mikecat · Feb 21, 2019 · 0927bdb · 0927bdb
1 parent 9b21d23
commit 0927bdb
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/pe_libs.c b/pe_libs.c
@@ -271,7 +271,14 @@ static uint32_t exec_kernel32(uint32_t regs[], const char* func_name) {
  regs[EAX] = 0;
  return 0;
  } else if (strcmp(func_name, "QueryPerformanceCounter") == 0) {
- regs[EAX] = 0; /* 失敗 */
+ uint32_t outptr;
+ if (!dmem_get_args(regs[ESP], 1, &outptr) || !dmemory_is_allocated(outptr, 8)) {
+ regs[EAX] = 0; /* 失敗 */
+ } else {
+ dmem_write_uint(outptr, 0, 4);
+ dmem_write_uint(outptr + 4, 0, 4);
+ regs[EAX] = 1;
+ }
  return 4;
  } else {
  fprintf(stderr, "unimplemented function %s() in kernel32.dll called.\n", func_name);