ArmPkg/ArmDisassemblerLib: fix check for MSR instruction

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / LongJump.asm

diff --git a/MdePkg/Library/BaseLib/Ia32/LongJump.asm b/MdePkg/Library/BaseLib/Ia32/LongJump.asm
index b419215237840f263b0378c6180bf9e0d188cd16..d1f1d775ff6687ce6f73f6eb70606cffc049e6bd 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/LongJump.asm
+++ b/MdePkg/Library/BaseLib/Ia32/LongJump.asm
@@ -1,10 +1,10 @@
 ;------------------------------------------------------------------------------\r
 ;\r
-; Copyright (c) 2006, Intel Corporation\r
-; All rights reserved. This program and the accompanying materials\r
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
+; This program and the accompanying materials\r
 ; are licensed and made available under the terms and conditions of the BSD License\r
 ; which accompanies this distribution.  The full text of the license may be found at\r
-; http://opensource.org/licenses/bsd-license.php\r
+; http://opensource.org/licenses/bsd-license.php.\r
 ;\r
 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
@@ -23,16 +23,24 @@
     .model  flat,C\r
     .code\r
 \r
+;------------------------------------------------------------------------------\r
+; VOID\r
+; EFIAPI\r
+; InternalLongJump (\r
+;   IN      BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer,\r
+;   IN      UINTN                     Value\r
+;   );\r
+;------------------------------------------------------------------------------\r
 InternalLongJump    PROC\r
-    pop     eax\r
-    pop     edx\r
-    pop     eax\r
+    pop     eax                         ; skip return address\r
+    pop     edx                         ; edx <- JumpBuffer\r
+    pop     eax                         ; eax <- Value\r
     mov     ebx, [edx]\r
     mov     esi, [edx + 4]\r
     mov     edi, [edx + 8]\r
     mov     ebp, [edx + 12]\r
     mov     esp, [edx + 16]\r
-    jmp     dword ptr [edx + 20]\r
+    jmp     dword ptr [edx + 20]        ; restore "eip"\r
 InternalLongJump    ENDP\r
 \r
     END\r