diff options
| author | Glauber Costa <gcosta@redhat.com> | 2008-06-24 12:40:55 -0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-09 09:14:06 +0200 |
| commit | 268cf048c890d10bd3a86bd87922ed8a722d502f (patch) | |
| tree | f5ea14b5f422686a537561a37569c40722327d8a /arch | |
| parent | 6c2d458680d49d939ffd4b4cdc84d9e004d65910 (diff) | |
x86: don't save ebx in putuser_32.S.
Clobber it in the inline asm macros, and let the compiler do this for us.
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/lib/putuser_32.S | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/arch/x86/lib/putuser_32.S b/arch/x86/lib/putuser_32.S index f58fba109d1..5b2a926f0e2 100644 --- a/arch/x86/lib/putuser_32.S +++ b/arch/x86/lib/putuser_32.S @@ -26,14 +26,8 @@ */ #define ENTER CFI_STARTPROC ; \ - pushl %ebx ; \ - CFI_ADJUST_CFA_OFFSET 4 ; \ - CFI_REL_OFFSET ebx, 0 ; \ GET_THREAD_INFO(%ebx) -#define EXIT popl %ebx ; \ - CFI_ADJUST_CFA_OFFSET -4 ; \ - CFI_RESTORE ebx ; \ - ret ; \ +#define EXIT ret ; \ CFI_ENDPROC .text @@ -81,10 +75,7 @@ ENTRY(__put_user_8) ENDPROC(__put_user_8) bad_put_user: - CFI_STARTPROC simple - CFI_DEF_CFA esp, 2*4 - CFI_OFFSET eip, -1*4 - CFI_OFFSET ebx, -2*4 + CFI_STARTPROC movl $-14,%eax EXIT END(bad_put_user) |