[PATCH v5 06/10] x86/asm/efi: Fix asmvalidate warnings for efi_stub_64.S

Josh Poimboeuf
2015-06-10T12:07:52Z

Fix the following asmvalidate warnings:

asmvalidate: arch/x86/platform/efi/efi_stub_64.o: efi_call(): missing FP_SAVE/RESTORE macros
asmvalidate: arch/x86/boot/compressed/efi_stub_64.o: efi_call(): missing FP_SAVE/RESTORE macros

efi_call() is a non-leaf callable function, so save/restore the frame
pointer with FP_SAVE/RESTORE.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: linux-efi@vger.kernel.org
---
arch/x86/platform/efi/efi_stub_64.S | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S
index 86d0f9e..0ca6bfb 100644
--- a/arch/x86/platform/efi/efi_stub_64.S
+++ b/arch/x86/platform/efi/efi_stub_64.S
@@ -11,6 +11,7 @@
#include <asm/msr.h>
#include <asm/processor-flags.h>
#include <asm/page_types.h>
+#include <asm/func.h>

#define SAVE_XMM \
mov %rsp, %rax; \
@@ -74,6 +75,7 @@
.endm

ENTRY(efi_call)
+ FP_SAVE
SAVE_XMM
mov (%rsp), %rax
mov 8(%rax), %rax
@@ -88,6 +90,7 @@ ENTRY(efi_call)
RESTORE_PGT
addq $48, %rsp
RESTORE_XMM
+ FP_RESTORE
ret
ENDPROC(efi_call)

--
2.1.0