The unified x86 and x86-64 signal bh definitions aren't suitable due to
differences in argument passing.
Signed-off-by: Eduard - Gabriel Munteanu <eduard.munte...@linux360.ro>
---
arch/x86/signal-bh.S | 42 +++++++++++++++---------------------------
1 files changed, 15 insertions(+), 27 deletions(-)
diff --git a/arch/x86/signal-bh.S b/arch/x86/signal-bh.S
index 0eb6230..c63f853 100644
--- a/arch/x86/signal-bh.S
+++ b/arch/x86/signal-bh.S
@@ -8,53 +8,41 @@
* signal bottom half hanlder.
*/
signal_bh_trampoline:
- push %xbp
- mov %xsp, %xbp
+ push %ebp
+ movl %esp, %ebp
/* save caller saved registers */
- push %xax
- push %xcx
- push %xdx
-#ifdef CONFIG_X86_64
- pushq %r8
- pushq %r9
- pushq %r10
- pushq %r11
-#endif
+ push %eax
+ push %ecx
+ push %edx
/* push signal bottom half handler's argument - address of
faulting instruction. */
- push (PTR_SIZE)(%xbp)
+ push 0x04(%ebp)
/* call the signal bottom half handler */
push $.bh_return
- push (2 * PTR_SIZE)(%xbp)
+ push 0x08(%ebp)
ret
.bh_return:
/* cleanup call arguments */
- add $PTR_SIZE, %xsp
+ addl $0x04, %esp
/* overwrite return address */
- mov %xax, (2 * PTR_SIZE)(%xbp)
+ movl %eax, 0x08(%ebp)
/* restore caller saved registers */
-#ifdef CONFIG_X86_64
- popq %r11
- popq %r10
- popq %r9
- popq %r8
-#endif
- pop %xdx
- pop %xcx
- pop %xax
-
- pop %xbp
+ pop %edx
+ pop %ecx
+ pop %eax
+
+ pop %ebp
/*
* Cleanup bottom half handler address pushed by signal_install_bh().
* We do this by popping the return address from stack into
* the call argument.
*/
- add $PTR_SIZE, %xsp
+ addl $0x04, %esp
ret
--
1.6.0.6
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