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

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10376 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
geekboy15a
2010-04-16 22:34:22 +00:00
parent 47ca9c9588
commit bc810c8977
2 changed files with 4 additions and 3 deletions
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5
MdePkg/Library/BaseLib/X64/DisablePaging64.S
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@@ -43,7 +43,7 @@ ASM_PFX(InternalX86DisablePaging64):
lea _mTransitionEnd(%rip), %rax # rax <- end of transition code
sub %rsi, %rax # rax <- The size of transition piece code
add $4, %rax # round rax up to the next 4 byte boundary
and $0x0fffffffc, %rax
and $0xfc, %al
sub %rax, %rdi # rdi <- use stack to hold transition code
mov %edi, %r10d # r10 <- The start address of transicition code below 4G
push %rcx # save rcx to stack
@@ -78,4 +78,5 @@ L1:
push %rsi # push Context1
callq *%rbx # transfer control to EntryPoint
jmp . # no one should get here
_mTransitionEnd :