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UefiCpuPkg/CpuDxe: Fix boot error 

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3084

When DXE drivers are dispatched above 4GB memory and
the system is already in 64bit mode, the address
setCodeSelectorLongJump in stack will be override
by parameter. so change to use 64bit address and
jump to qword address.

Signed-off-by: Guo Dong <guo.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
This commit is contained in:
Guo Dong 2020-12-02 14:18:18 -07:00 committed by mergify[bot]
parent 8e4cb8fbce
commit cee5b0441a
1 changed files with 2 additions and 2 deletions
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4
UefiCpuPkg/CpuDxe/X64/CpuAsm.nasm
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@ -23,8 +23,8 @@ ASM_PFX(SetCodeSelector):
sub rsp, 0x10
lea rax, [setCodeSelectorLongJump]
mov [rsp], rax
mov [rsp+4], cx
jmp dword far [rsp]
mov [rsp+8], cx
jmp qword far [rsp]
setCodeSelectorLongJump:
add rsp, 0x10
ret