25 Jan
2011
25 Jan
'11
1:28 a.m.
Author: tkreuzer
Date: Tue Jan 25 01:28:41 2011
New Revision: 50482
URL: http://svn.reactos.org/svn/reactos?rev=50482&view=rev
Log:
[CRT]
Implement ms compatible __SEH_prolog
Added:
branches/cmake-bringup/lib/sdk/crt/except/i386/seh_prolog.s (with props)
Modified:
branches/cmake-bringup/lib/sdk/crt/CMakeLists.txt
Modified: branches/cmake-bringup/lib/sdk/crt/CMakeLists.txt
URL:
http://svn.reactos.org/svn/reactos/branches/cmake-bringup/lib/sdk/crt/CMake…
==============================================================================
--- branches/cmake-bringup/lib/sdk/crt/CMakeLists.txt [iso-8859-1] (original)
+++ branches/cmake-bringup/lib/sdk/crt/CMakeLists.txt [iso-8859-1] Tue Jan 25 01:28:41
2011
@@ -279,15 +279,12 @@
wine/heap.c
wine/undname.c)
-if(NOT ARCH MATCHES arm)
- list(APPEND CRT_SOURCE
- except/${ARCH}/seh.s)
-endif()
-
if(ARCH MATCHES i386)
list(APPEND CRT_SOURCE
except/i386/chkstk_asm.s
except/i386/prolog.s
+ except/i386/seh.s
+ except/i386/seh_prolog.s
except/i386/unwind.c
float/i386/clearfp.c
float/i386/cntrlfp.c
@@ -298,6 +295,7 @@
elseif(ARCH MATCHES amd64)
list(APPEND CRT_SOURCE
except/amd64/chkstk_asm.s
+ except/amd64/seh.s
float/i386/clearfp.c
float/i386/cntrlfp.c
float/i386/fpreset.c
@@ -470,15 +468,12 @@
wstring/wcsspn.c
wstring/wcsstr.c)
-if(NOT ARCH MATCHES arm)
- list(APPEND LIBCNTPR_SOURCE
- except/${ARCH}/chkstk_asm.s
- except/${ARCH}/seh.s
- setjmp/${ARCH}/setjmp.s)
-endif()
-
if(ARCH MATCHES i386)
list(APPEND LIBCNTPR_SOURCE
+ except/i386/chkstk_asm.s
+ except/i386/seh.s
+ except/i386/seh_prolog.s
+ setjmp/i386/setjmp.s
math/i386/alldiv_asm.s
math/i386/alldvrm_asm.s
math/i386/allmul_asm.s
@@ -505,6 +500,9 @@
misc/i386/readcr4.S)
elseif(ARCH MATCHES amd64)
list(APPEND LIBCNTPR_SOURCE
+ except/amd64/chkstk_asm.s
+ except/amd64/seh.s
+ setjmp/amd64/setjmp.s
math/cos.c
math/sin.c
math/amd64/alldiv.S
Added: branches/cmake-bringup/lib/sdk/crt/except/i386/seh_prolog.s
URL:
http://svn.reactos.org/svn/reactos/branches/cmake-bringup/lib/sdk/crt/excep…
==============================================================================
--- branches/cmake-bringup/lib/sdk/crt/except/i386/seh_prolog.s (added)
+++ branches/cmake-bringup/lib/sdk/crt/except/i386/seh_prolog.s [iso-8859-1] Tue Jan 25
01:28:41 2011
@@ -1,0 +1,123 @@
+/*
+ * COPYRIGHT: GNU GPL, see COPYING in the top level directory
+ * PROJECT: ReactOS CRT
+ * FILE: lib/crt/misc/i386/seh_prolog.S
+ * PURPOSE: SEH Support for MSVC
+ * PROGRAMMERS: Timo Kreuzer
+ */
+
+/* INCLUDES ******************************************************************/
+
+#include <asm.inc>
+
+EXTERN __except_handler3:PROC
+
+/* The very first thing a function compiled with MSVC containing SEH
+ * will do is call __SEH_prolog like this:
+ *
+ * push <Number of stackbytes>
+ * push <Address of exception handler>
+ * call __SEH_prolog
+ *
+ * When entering the function the stack layout is like this:
+ *
+ * esp + 08: OLDFRAME.StackBytes
+ * esp + 04: OLDFRAME.SEHTable
+ * esp + 00: OLDFRAME.ReturnAddress
+ *
+ * __SEH_prolog will now setup the stack to the following layout:
+ *
+ * esp + N + 24: SEH_FRAME.OriginalEbp OLDFRAME.StackBytes
+ * esp + N + 20: SEH_FRAME.Disable OLDFRAME.SEHTable
+ * esp + N + 1C: SEH_FRAME.SEHTable OLDFRAME.ReturnAddress
+ * esp + N + 18: SEH_FRAME.Handler
+ * esp + N + 14: SEH_FRAME.PreviousRecord
+ * esp + N + 10: SEH_FRAME.unused
+ * esp + N + 0c: SEH_FRAME.NewEsp
+ *
+ * N bytes local variables
+ * ...
+ * esp + 08: SAFE_AREA.Ebx
+ * esp + 04: SAFE_AREA.Esi
+ * esp + 00: SAFE_AREA.Edi
+ *
+ * all this is documented here (with some minor errors):
+ * http://reactos-blog.blogspot.com/2009/08/inside-mind-of-reactos-developer.h…
+ */
+
+OLDFRAME_ReturnAddress = 0 /* 0x00 */
+OLDFRAME_SEHTable = 4 /* 0x04 */
+OLDFRAME_StackBytes = 8 /* 0x08 */
+OLDFRAME_Size = 12 /* 0x0c */
+
+SEH_FRAME_NewEsp = 0 /* 0x00 */
+SEH_FRAME_unused = 4 /* 0x04 */
+SEH_FRAME_PreviousRecord = 8 /* 0x08 */
+SEH_FRAME_Handler = 12 /* 0x0c */
+SEH_FRAME_SEHTable = 16 /* 0x10 */
+SEH_FRAME_Disable = 20 /* 0x14 */
+SEH_FRAME_OriginalEbp = 24 /* 0x18 */
+SEH_FRAME_Size = 28 /* 0x1c */
+
+SAFE_AREA_Edi = 0 /* 0x00 */
+SAFE_AREA_Esi = 4 /* 0x04 */
+SAFE_AREA_Ebx = 8 /* 0x08 */
+SAFE_AREA_Size = 12 /* 0x0c */
+
+
+.code
+
+PUBLIC __SEH_prolog
+__SEH_prolog:
+
+ /* Get the number of stack bytes to reserve */
+ mov eax, [esp + OLDFRAME_StackBytes]
+
+ /* Push address of __except_handler3 on the stack */
+ push offset __except_handler3
+
+ /* Push the old exception record on the stack */
+ push dword ptr fs:0
+
+ /* Adjust stack allocation, add size of the stack frame minus 2 pushes */
+ add eax, SEH_FRAME_Size + SAFE_AREA_Size - OLDFRAME_Size - 8
+
+ /* Save old ebp, overwriting OLDFRAME.StackBytes */
+ mov [esp + 8 + OLDFRAME_StackBytes], ebp
+
+ /* Load new ebp, pointing to OLDFRAME.StackBytes */
+ lea ebp, [esp + 8 + OLDFRAME_StackBytes]
+
+ /* Allocate stack space */
+ sub esp, eax
+
+ /* Push the return address on the stack */
+ push dword ptr [ebp - OLDFRAME_StackBytes + OLDFRAME_ReturnAddress]
+
+ /* Get address of the SEH table */
+ mov eax, [ebp + OLDFRAME_SEHTable]
+
+ /* Save new esp */
+ mov [ebp - SEH_FRAME_OriginalEbp + SEH_FRAME_NewEsp], esp
+
+ /* Safe SEH table, overwriting OLDFRAME.ReturnAddress */
+ mov [ebp - SEH_FRAME_OriginalEbp + SEH_FRAME_SEHTable], eax
+
+ /* Save registers */
+ mov [esp + SAFE_AREA_Edi], edi
+ mov [esp + SAFE_AREA_Esi], esi
+ mov [esp + SAFE_AREA_Ebx], ebx
+
+ /* Load the address of the new registration record */
+ lea eax, [ebp - SEH_FRAME_OriginalEbp + SEH_FRAME_PreviousRecord]
+
+ /* Safe the disable value, overwriting OLDFRAME.SEHTable */
+ mov dword ptr [ebp - SEH_FRAME_OriginalEbp + SEH_FRAME_Disable], -1
+
+ /* Enqueue the new record */
+ mov fs:[0], eax
+
+ /* Return to the caller */
+ ret
+
+END
Propchange: branches/cmake-bringup/lib/sdk/crt/except/i386/seh_prolog.s
------------------------------------------------------------------------------
svn:eol-style = native
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tkreuzer＠svn.reactos.org