lib/sdk/runtmchk/i386/_RTC_CheckEsp.S

   1 /*
   2  * PROJECT:         MSVC runtime check support library
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * PURPOSE:         Provides support functions for MSVC runtime checks
   5  * PROGRAMMER:      Timo Kreuzer (timo.kreuzer@reactos.org)
   6  */
   7
   8 #include <asm.inc>
   9 .code
  10
  11 EXTERN __RTC_Failure:PROC
  12
  13 /*
  14
  15     This function is invoked like this:
  16
  17         mov esi, esp
  18         // Do the actual function call
  19         cmp esp, esi
  20         call __RTC_CheckEsp
  21
  22     http://stackoverflow.com/questions/3914750/hows-rtc-checkesp-implemented
  23 */
  24 PUBLIC __RTC_CheckEsp
  25 __RTC_CheckEsp:
  26
  27     /* We check if the zero flag is set, and if it is, everything is fine
  28        and we return to the caller */
  29     je __RTC_CheckEsp_return
  30
  31     push ebp
  32     mov ebp, esp
  33     pusha
  34
  35     // void _RTC_Failure(void* retaddr, int errnum);
  36     push 0 // errnum
  37     push dword ptr [esp + 4] // retaddr
  38     call __RTC_Failure
  39     add esp, 8
  40
  41     popa
  42     pop ebp
  43
  44 __RTC_CheckEsp_return:
  45     ret
  46
  47 END
  48
  49