diff options
author | Jeff Garzik <jgarzik@pobox.com> | 2005-07-30 18:14:15 -0400 |
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committer | Jeff Garzik <jgarzik@pobox.com> | 2005-07-30 18:14:15 -0400 |
commit | a670fcb43f01a67ef56176afc76e5d43d128b25c (patch) | |
tree | 09c9411c78a33ff980e9ea871bc7686e7589abbf /include/asm-x86_64/bug.h | |
parent | 327309e899662b482c58cf25f574513d38b5788c (diff) | |
parent | b0825488a642cadcf39709961dde61440cb0731c (diff) |
/spare/repo/netdev-2.6 branch 'master'
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 3d2a666a5dd..eed78566728 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 |