Refine comments of X64 assembly files of MDE BaseLib.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6277 6f19259b-4bc3-4df7-8a09-765794883524
2008-10-28 14:23:36 +00:00
parent 405b567555
commit 2faf4da5f7
15 changed files with 50 additions and 59 deletions
--- a/MdePkg/Library/BaseLib/X64/CpuIdEx.S
+++ b/MdePkg/Library/BaseLib/X64/CpuIdEx.S
@@ -38,7 +38,7 @@ ASM_PFX(AsmCpuidEx):
    push    %rbx
    movl    %ecx,%eax
    movl    %edx,%ecx
-    push    %rax
+    push    %rax                  # save Index on stack
    cpuid
    mov     0x38(%rsp), %r10
    test    %r10, %r10
@@ -57,6 +57,6 @@ L3:
    jrcxz   L4
    mov     %edx, (%rcx)
 L4: 
-    pop     %rax
+    pop     %rax                  # restore Index to rax as return value
    pop     %rbx
    ret