Update the Guid Value of Ext SCSI Pass Thru Protocol

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

diff --git a/MdePkg/Library/BaseLib/Ia32/SetJump.asm b/MdePkg/Library/BaseLib/Ia32/SetJump.asm
index 7d8579c9b9cc20ad955436e1aba067b811a28592..4b7b40c47a4b2faf89ec972c2e4f60d153eba3ce 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/SetJump.asm
+++ b/MdePkg/Library/BaseLib/Ia32/SetJump.asm
@@ -25,18 +25,25 @@
 \r
 InternalAssertJumpBuffer    PROTO   C\r
 \r
+;------------------------------------------------------------------------------\r
+; UINTN\r
+; EFIAPI\r
+; SetJump (\r
+;   OUT     BASE_LIBRARY_JUMP_BUFFER  *JumpBuffer\r
+;   );\r
+;------------------------------------------------------------------------------\r
 SetJump     PROC\r
     push    [esp + 4]\r
-    call    InternalAssertJumpBuffer\r
-    pop     ecx\r
+    call    InternalAssertJumpBuffer    ; To validate JumpBuffer\r
     pop     ecx\r
+    pop     ecx                         ; ecx <- return address\r
     mov     edx, [esp]\r
     mov     [edx], ebx\r
     mov     [edx + 4], esi\r
     mov     [edx + 8], edi\r
     mov     [edx + 12], ebp\r
     mov     [edx + 16], esp\r
-    mov     [edx + 20], ecx\r
+    mov     [edx + 20], ecx             ; eip value to restore in LongJump\r
     xor     eax, eax\r
     jmp     ecx\r
 SetJump     ENDP\r