reactos/lib/pseh/i386/framebased.asm

   1 ; Copyright (c) 2004/2005 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 __SEHCurrentRegistration
  29 __SEHCurrentRegistration:
  30         mov eax, [fs:0]
  31         ret
  32
  33 global __SEHRegisterFrame
  34 __SEHRegisterFrame:
  35         mov ecx, [esp+4]
  36         mov eax, [fs:0]
  37         mov [ecx+0], eax
  38         mov [fs:0], ecx
  39         ret
  40
  41 global __SEHUnregisterFrame
  42 __SEHUnregisterFrame:
  43         mov ecx, [fs:0]
  44         mov ecx, [ecx+0]
  45         mov [fs:0], ecx
  46         ret
  47
  48 global __SEHGlobalUnwind
  49 __SEHGlobalUnwind:
  50
  51         extern __SEHRtlUnwind
  52
  53 ; RtlUnwind clobbers all the "don't clobber" registers, so we save them
  54         push ebx
  55         mov ebx, [esp+8]
  56         push esi
  57         push edi
  58
  59         push dword 0x0 ; ReturnValue
  60         push dword 0x0 ; ExceptionRecord
  61         push dword .RestoreRegisters ; TargetIp
  62         push ebx ; TargetFrame
  63         call [__SEHRtlUnwind]
  64
  65 .RestoreRegisters:
  66         pop edi
  67         pop esi
  68         pop ebx
  69
  70         ret
  71
  72 ; EOF