reactos/lib/pseh/i386/framebased.asm

   1 ; Copyright (c) 2004 KJK::Hyperion
   2
   3 ; Permission is hereby granted, free of charge, to any person obtaining a copy
   4 ; of this software and associated documentation files (the "Software"), to deal
   5 ; in the Software without restriction, including without limitation the rights
   6 ; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   7 ; copies of the Software, and to permit persons to whom the Software is
   8 ; furnished to dos so, subject to the following conditions:
   9
  10 ; The above copyright notice and this permission notice shall be included in all
  11 ; copies or substantial portions of the Software.
  12
  13 ; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14 ; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15 ; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16 ; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17 ; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18 ; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  19 ; SOFTWARE.
  20
  21 segment .text use32
  22
  23 global __SEHCleanHandlerEnvironment
  24 __SEHCleanHandlerEnvironment:
  25  cld
  26  ret
  27
  28 global __SEHRegisterFrame
  29 __SEHRegisterFrame:
  30  mov ecx, [esp+4]
  31  mov eax, [fs:0]
  32  mov [ecx+0], eax
  33  mov [fs:0], ecx
  34  ret
  35
  36 global __SEHUnregisterFrame
  37 __SEHUnregisterFrame:
  38  mov ecx, [esp+4]
  39  mov ecx, [ecx]
  40  mov [fs:0], ecx
  41  ret
  42
  43 global __SEHUnwind
  44 __SEHUnwind:
  45
  46  extern __SEHRtlUnwind
  47
  48  mov ecx, [esp+4]
  49
  50 ; RtlUnwind clobbers all the "don't clobber" registers, so we save them
  51  push esi
  52  push edi
  53  push ebx
  54
  55  xor eax, eax
  56  push eax ; ReturnValue
  57  push eax ; ExceptionRecord
  58  push eax ; TargetIp
  59  push ecx ; TargetFrame
  60  call [__SEHRtlUnwind]
  61
  62  pop ebx
  63  pop edi
  64  pop esi
  65
  66  ret
  67
  68 ; EOF