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| author |   Len Brown <len.brown@intel.com> | 2005-07-30 01:55:32 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-07-30 01:55:32 -0400 |
| commit | adbedd34244e2b054557002817f979a9b004a405 (patch) | |
| tree | 78e4a524e84f8b3e23ae8b49ac689048584e4668 /include/asm-x86_64/bug.h | |
| parent | /home/lenb/src/to-linus branch 'acpi-2.6.12' (diff) | |
| parent | [PATCH] agp: restore APBASE after setting APSIZE (diff) | |
| download | linux-dev-adbedd34244e2b054557002817f979a9b004a405.tar.xz linux-dev-adbedd34244e2b054557002817f979a9b004a405.zip | |
merge 2.6.13-rc4 with ACPI's to-linus tree
Diffstat (limited to 'include/asm-x86_64/bug.h')
| -rw-r--r-- | include/asm-x86_64/bug.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/asm-x86_64/bug.h b/include/asm-x86_64/bug.h index 3d2a666a5dd5..eed785667289 100644 --- a/include/asm-x86_64/bug.h +++ b/include/asm-x86_64/bug.h @@ -8,17 +8,24 @@ * this frame. */ struct bug_frame { - unsigned char ud2[2]; + unsigned char ud2[2]; + unsigned char mov; /* should use 32bit offset instead, but the assembler doesn't like it */ char *filename; + unsigned char ret; unsigned short line; } __attribute__((packed)); #ifdef CONFIG_BUG #define HAVE_ARCH_BUG -#define BUG() \ - asm volatile("ud2 ; .quad %c1 ; .short %c0" :: \ +/* We turn the bug frame into valid instructions to not confuse + the disassembler. Thanks to Jan Beulich & Suresh Siddha + for nice instruction selection. + The magic numbers generate mov $64bitimm,%eax ; ret $offset. */ +#define BUG() \ + asm volatile( \ + "ud2 ; .byte 0xa3 ; .quad %c1 ; .byte 0xc2 ; .short %c0" :: \ "i"(__LINE__), "i" (__stringify(__FILE__))) void out_of_line_bug(void); #else |