reactos/lib/sdk/RunTmChk/i386/_RTC_CheckEsp.S

   1
   2
   3 #include <asm.inc>
   4 .code
   5
   6 EXTERN __RTC_Failure:PROC
   7
   8 /*
   9
  10     This function is invoked like this:
  11
  12         mov esi, esp
  13         // Do the actual function call
  14         cmp esp, esi
  15         call __RTC_CheckEsp
  16
  17     http://stackoverflow.com/questions/3914750/hows-rtc-checkesp-implemented
  18 */
  19 PUBLIC __RTC_CheckEsp
  20 __RTC_CheckEsp:
  21
  22     /* We check if the zero flag is set, and if it is, everything is fine
  23        and we return to the caller */
  24     je __RTC_CheckEsp_return
  25
  26     push ebp
  27     mov ebp, esp
  28     pusha
  29
  30     // void _RTC_Failure(void* retaddr, int errnum);
  31     push 0 // errnum
  32     push dword ptr [esp + 4] // retaddr
  33     call __RTC_Failure
  34     add esp, 8
  35     int 3
  36
  37     popa
  38     pop ebp
  39
  40 __RTC_CheckEsp_return:
  41     ret
  42
  43 END
  44
  45