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| author | Jan Beulich <jbeulich@novell.com> | 2006-06-26 13:57:41 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-26 10:48:17 -0700 |
| commit | 176a2718f408ce92788b29127050b04dfd6e4f68 (patch) | |
| tree | bb637b13098f821551d07d3a13d140a908e7bc04 /arch/i386/kernel/entry.S | |
| parent | dffead4e421e289c8434351400d24fd35723e874 (diff) | |
| download | op-kernel-dev-176a2718f408ce92788b29127050b04dfd6e4f68.zip op-kernel-dev-176a2718f408ce92788b29127050b04dfd6e4f68.tar.gz | |
[PATCH] i386: reliable stack trace support (i386)
These are the i386-specific pieces to enable reliable stack traces. This is
going to be even more useful once CFI annotations get added to he assembly
code, namely to entry.S.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/entry.S')
| -rw-r--r-- | arch/i386/kernel/entry.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S index cfc683f..e802f3c 100644 --- a/arch/i386/kernel/entry.S +++ b/arch/i386/kernel/entry.S @@ -663,6 +663,35 @@ ENTRY(spurious_interrupt_bug) pushl $do_spurious_interrupt_bug jmp error_code +#ifdef CONFIG_STACK_UNWIND +ENTRY(arch_unwind_init_running) + movl 4(%esp), %edx + movl (%esp), %ecx + leal 4(%esp), %eax + movl %ebx, EBX(%edx) + xorl %ebx, %ebx + movl %ebx, ECX(%edx) + movl %ebx, EDX(%edx) + movl %esi, ESI(%edx) + movl %edi, EDI(%edx) + movl %ebp, EBP(%edx) + movl %ebx, EAX(%edx) + movl $__USER_DS, DS(%edx) + movl $__USER_DS, ES(%edx) + movl %ebx, ORIG_EAX(%edx) + movl %ecx, EIP(%edx) + movl 12(%esp), %ecx + movl $__KERNEL_CS, CS(%edx) + movl %ebx, EFLAGS(%edx) + movl %eax, OLDESP(%edx) + movl 8(%esp), %eax + movl %ecx, 8(%esp) + movl EBX(%edx), %ebx + movl $__KERNEL_DS, OLDSS(%edx) + jmpl *%eax +ENDPROC(arch_unwind_init_running) +#endif + .section .rodata,"a" #include "syscall_table.S" |
