From c540ba2750cda518beb13725c70d8a58efd979d1 Mon Sep 17 00:00:00 2001
From: Jonghyun Park <parjong@gmail.com>
Date: Wed, 7 Dec 2016 18:54:54 +0900
Subject: [PATCH] Move JIT_EndCatch from asmhelpers.asm into jithelp.asm
 (dotnet/coreclr#8492)

* Move JIT_EndCatch from asmhelpers.asm into jithelp.asm

The name of JIT_EndCatch suggests that it is a JIT helper, but its
implementation is inside asmhelpers.asm (not in jithelp.asm).

This commit moves its implementation into jithelp.asm.

* Move COMPlusEndCatch declaration


Commit migrated from https://github.com/dotnet/coreclr/commit/eb582352acec56cc9744cae32a34900d6de987ea
---
 src/coreclr/src/vm/i386/asmhelpers.asm | 28 ----------------------------
 src/coreclr/src/vm/i386/jithelp.asm    | 30 ++++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 28 deletions(-)

diff --git a/src/coreclr/src/vm/i386/asmhelpers.asm b/src/coreclr/src/vm/i386/asmhelpers.asm
index 66a22b7..0456be8 100644
--- a/src/coreclr/src/vm/i386/asmhelpers.asm
+++ b/src/coreclr/src/vm/i386/asmhelpers.asm
@@ -43,7 +43,6 @@ TlsGetValue PROTO stdcall
 ifdef FEATURE_HIJACK
 EXTERN _OnHijackWorker@4:PROC
 endif ;FEATURE_HIJACK
-EXTERN _COMPlusEndCatch@20:PROC
 EXTERN _COMPlusFrameHandler:PROC
 ifdef FEATURE_COMINTEROP
 EXTERN _COMPlusFrameHandlerRevCom:PROC
@@ -1005,33 +1004,6 @@ OnHijackFPTripThread ENDP
 endif ; FEATURE_HIJACK
 
 
-; Note that the debugger skips this entirely when doing SetIP,
-; since COMPlusCheckForAbort should always return 0.  Excep.cpp:LeaveCatch
-; asserts that to be true.  If this ends up doing more work, then the
-; debugger may need additional support.
-; void __stdcall JIT_EndCatch();
-JIT_EndCatch PROC stdcall public
-
-    ; make temp storage for return address, and push the address of that 
-    ; as the last arg to COMPlusEndCatch	
-    mov     ecx, [esp]
-    push    ecx;
-    push    esp;
-
-    ; push the rest of COMPlusEndCatch's args, right-to-left
-    push    esi
-    push    edi
-    push    ebx
-    push    ebp
-
-    call    _COMPlusEndCatch@20 ; returns old esp value in eax, stores jump address 
-    ; now eax = new esp, [esp] = new eip
-
-    pop     edx         ; edx = new eip
-    mov     esp, eax    ; esp = new esp
-    jmp     edx         ; eip = new eip
-
-JIT_EndCatch ENDP
 
 ;==========================================================================
 ; This function is reached only via the embedded ImportThunkGlue code inside
diff --git a/src/coreclr/src/vm/i386/jithelp.asm b/src/coreclr/src/vm/i386/jithelp.asm
index ac76728..9d2f6b7 100644
--- a/src/coreclr/src/vm/i386/jithelp.asm
+++ b/src/coreclr/src/vm/i386/jithelp.asm
@@ -92,6 +92,8 @@ EXTERN _TransparentProxyStub_CrossContext@0:PROC
 EXTERN _InContextTPQuickDispatchAsmStub@0:PROC
 endif
 
+EXTERN _COMPlusEndCatch@20:PROC
+
 .686P
 .XMM
 ; The following macro is needed because of a MASM issue with the
@@ -2571,4 +2573,32 @@ ChkCastInterfaceIsNullInst:
 
 @JIT_ChkCastInterface@8 endp
 
+; Note that the debugger skips this entirely when doing SetIP,
+; since COMPlusCheckForAbort should always return 0.  Excep.cpp:LeaveCatch
+; asserts that to be true.  If this ends up doing more work, then the
+; debugger may need additional support.
+; void __stdcall JIT_EndCatch();
+JIT_EndCatch PROC stdcall public
+
+    ; make temp storage for return address, and push the address of that
+    ; as the last arg to COMPlusEndCatch
+    mov     ecx, [esp]
+    push    ecx;
+    push    esp;
+
+    ; push the rest of COMPlusEndCatch's args, right-to-left
+    push    esi
+    push    edi
+    push    ebx
+    push    ebp
+
+    call    _COMPlusEndCatch@20 ; returns old esp value in eax, stores jump address
+    ; now eax = new esp, [esp] = new eip
+
+    pop     edx         ; edx = new eip
+    mov     esp, eax    ; esp = new esp
+    jmp     edx         ; eip = new eip
+
+JIT_EndCatch ENDP
+
     end
-- 
2.7.4