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Correct one minor instruction to clear the lower 4 bits of r11.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8391 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8 2009-05-26 12:04:46 +00:00
parent a148780114
commit a81c3daf0a
1 changed files with 1 additions and 1 deletions
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2
MdePkg/Library/BaseLib/X64/Thunk16.S
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@ -267,7 +267,7 @@ ASM_PFX(InternalAsmThunk16):
sgdt 0x60(%rsp) # save GDT stack in argument space sgdt 0x60(%rsp) # save GDT stack in argument space
movzwq 0x60(%rsp), %r10 # r10 <- GDT limit movzwq 0x60(%rsp), %r10 # r10 <- GDT limit
lea ((ASM_PFX(InternalAsmThunk16) - SavedCr4) + 0xf)(%rcx), %r11 lea ((ASM_PFX(InternalAsmThunk16) - SavedCr4) + 0xf)(%rcx), %r11
andl $0xfffffff0, r11 # r11 <- 16-byte aligned shadowed GDT table in real mode buffer andq $0xfffffff0, %r11 # r11 <- 16-byte aligned shadowed GDT table in real mode buffer
movw %r10w, (SavedGdt - SavedCr4)(%rcx) # save the limit of shadowed GDT table movw %r10w, (SavedGdt - SavedCr4)(%rcx) # save the limit of shadowed GDT table
movq %r11, (SavedGdt - SavedCr4 + 0x2)(%rcx) # save the base address of shadowed GDT table movq %r11, (SavedGdt - SavedCr4 + 0x2)(%rcx) # save the base address of shadowed GDT table