diff options
Diffstat (limited to 'IntelFsp2Pkg/Library/BaseFspSwitchStackLib/X64/Stack.nasm')
| -rw-r--r-- | IntelFsp2Pkg/Library/BaseFspSwitchStackLib/X64/Stack.nasm | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/IntelFsp2Pkg/Library/BaseFspSwitchStackLib/X64/Stack.nasm b/IntelFsp2Pkg/Library/BaseFspSwitchStackLib/X64/Stack.nasm index bd36fe4b8b..1ea1220608 100644 --- a/IntelFsp2Pkg/Library/BaseFspSwitchStackLib/X64/Stack.nasm +++ b/IntelFsp2Pkg/Library/BaseFspSwitchStackLib/X64/Stack.nasm @@ -47,7 +47,8 @@ ASM_PFX(Loader2PeiSwitchStack): ;------------------------------------------------------------------------------
global ASM_PFX(FspSwitchStack)
ASM_PFX(FspSwitchStack):
- ; Save current contexts
+ ; Save current contexts. The format must align with CONTEXT_STACK_64.
+ push rdx ; Reserved QWORD for stack alignment
push rdx ; ApiParam2
push rcx ; ApiParam1
push rax ; FspInfoHeader
@@ -67,6 +68,6 @@ ASM_PFX(FspSwitchStack): add rsp, 16
POPA_64
popfq
- add rsp, 24 ; FspInfoHeader + ApiParam[2]
+ add rsp, 32 ; FspInfoHeader + ApiParam[2] + Reserved QWORD
ret
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