mirror of
https://github.com/reactos/reactos.git
synced 2024-09-11 13:23:51 +00:00
![Timo Kreuzer](/assets/img/avatar_default.png)
- Switch the registration asm functions from a complete custom calling convention to regparm(2), so that it can be used in "returns_twice" based algorithm (required by CLANG, which doesn't support "asm goto" construct) - Add support for saving all non-volatiles in the registration frame (also required by CLANG, since without asm goto, we cannot give the compiler the required hints to save these registers itself) svn path=/trunk/; revision=62383
101 lines
2.9 KiB
ArmAsm
101 lines
2.9 KiB
ArmAsm
/*
|
|
* PROJECT: ReactOS system libraries
|
|
* LICENSE: GNU GPL - See COPYING in the top level directory
|
|
* PURPOSE: Support library for PSEH3
|
|
* PROGRAMMER: Timo Kreuzer (timo.kreuzer@reactos.org)
|
|
*/
|
|
|
|
#include "pseh3_asmdef.h"
|
|
|
|
.intel_syntax noprefix
|
|
|
|
.text
|
|
|
|
.extern __SEH3$_except_handler
|
|
|
|
/*
|
|
* void
|
|
* __attribute__((regparm(2)))
|
|
* __attribute__((returns_twice))
|
|
* _SEH3$_RegisterFrame[WithNonVolatiles](
|
|
* PSEH_DATA_TABLE DataTable<eax>,
|
|
* PSEH_REGISTRATION_FRAME RegistrationRecord<edx>);
|
|
*/
|
|
.global __SEH3$_RegisterFrameWithNonVolatiles
|
|
__SEH3$_RegisterFrameWithNonVolatiles:
|
|
|
|
/* Save non-volatiles in the registration frame */
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Ebx], ebx
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Esi], esi
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Edi], edi
|
|
|
|
.global __SEH3$_RegisterFrame
|
|
__SEH3$_RegisterFrame:
|
|
|
|
/* Save the address of the static data table */
|
|
mov [edx + SEH3_REGISTRATION_FRAME_ScopeTable], eax
|
|
|
|
/* Set the handler address */
|
|
mov dword ptr [edx + SEH3_REGISTRATION_FRAME_Handler], offset __SEH3$_except_handler
|
|
|
|
/* Set this as the end of the internal chain */
|
|
mov dword ptr [edx + SEH3_REGISTRATION_FRAME_EndOfChain], edx
|
|
|
|
/* Register the frame in the TEB */
|
|
mov eax, dword ptr fs:[0]
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Next], eax
|
|
mov dword ptr fs:[0], edx
|
|
|
|
/* Save the stack registers */
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Esp], esp
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Ebp], ebp
|
|
|
|
/* Set eax to 0 to indicate 1st return */
|
|
xor eax, eax
|
|
ret
|
|
|
|
|
|
/*
|
|
* void
|
|
* __attribute__((regparm(2)))
|
|
* __attribute__((returns_twice))
|
|
* _SEH3$_RegisterTryLevel[WithNonVolatiles](
|
|
* PSEH_DATA_TABLE DataTable<eax>,
|
|
* PSEH_REGISTRATION_FRAME RegistrationRecord<edx>);
|
|
*/
|
|
.global __SEH3$_RegisterTryLevelWithNonVolatiles
|
|
__SEH3$_RegisterTryLevelWithNonVolatiles:
|
|
|
|
/* Save non-volatiles in the registration frame */
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Ebx], ebx
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Esi], esi
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Edi], edi
|
|
|
|
.global __SEH3$_RegisterTryLevel
|
|
__SEH3$_RegisterTryLevel:
|
|
|
|
/* Save the address of the static data table */
|
|
mov [edx + SEH3_REGISTRATION_FRAME_ScopeTable], eax
|
|
|
|
/* Set the handler address to NULL as identification */
|
|
and dword ptr [edx + SEH3_REGISTRATION_FRAME_Handler], 0
|
|
|
|
/* Get the current registered frame */
|
|
mov eax, dword ptr fs:[0]
|
|
|
|
/* Get the current end of the chain and set this as Next */
|
|
mov ecx, [eax + SEH3_REGISTRATION_FRAME_EndOfChain]
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Next], ecx
|
|
|
|
/* Set this as the end of the internal chain */
|
|
mov dword ptr [eax + SEH3_REGISTRATION_FRAME_EndOfChain], edx
|
|
|
|
/* Save the stack registers */
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Esp], esp
|
|
mov [edx + SEH3_REGISTRATION_FRAME_Ebp], ebp
|
|
|
|
/* Set eax to 0 to indicate 1st return */
|
|
xor eax, eax
|
|
ret
|
|
|