1. Added comments to ASM files

[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..0309f6ae7157c8a62c22d891128ed6647ed5daf7 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/LongJump.asm
+++ b/MdePkg/Library/BaseLib/Ia32/LongJump.asm
@@ -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