Fixed GCC 4.4 build issue. Also fixed issue where upper 32-bits may be lost during AND operation.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10376 6f19259b-4bc3-4df7-8a09-765794883524
2010-04-16 22:34:22 +00:00
parent 47ca9c9588
commit bc810c8977
2 changed files with 4 additions and 3 deletions
--- a/MdePkg/Library/BaseLib/X64/DisablePaging64.asm
+++ b/MdePkg/Library/BaseLib/X64/DisablePaging64.asm
@@ -41,7 +41,7 @@ InternalX86DisablePaging64    PROC
    lea     rax, mTransitionEnd         ; rax <- end of transition code
    sub     rax, rsi                    ; rax <- The size of transition piece code 
    add     rax, 4                      ; Round RAX up to the next 4 byte boundary
-    and     rax, 0fffffffch
+    and     al, 0fch
    sub     rdi, rax                    ; rdi <- Use stack to hold transition code
    mov     r10d, edi                   ; r10 <- The start address of transicition code below 4G
    push    rcx                         ; save rcx to stack