diff options
| author | Maciej W. Rozycki <macro@imgtec.com> | 2016-03-04 01:44:28 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2016-04-03 12:32:09 +0200 |
| commit | 3b143cca6e1397188f507a6c727f4108861ceb8b (patch) | |
| tree | 18d40c6731a2f8f385c3f2b6f285cde8408e235c /arch/mips/include/asm/mips-r2-to-r6-emul.h | |
| parent | 748ac56bb9533f867b25325a805d64f52a1a3a88 (diff) | |
MIPS: traps: Correct the SIGTRAP debug ABI in `do_watch' and `do_trap_or_bp'
Follow our own rules set in <asm/siginfo.h> for SIGTRAP signals issued
from `do_watch' and `do_trap_or_bp' by setting the signal code to
TRAP_HWBKPT and TRAP_BRKPT respectively, for Watch exceptions and for
those Breakpoint exceptions whose originating BREAK instruction's code
does not have a special meaning. Keep Trap exceptions unaffected as
these are not debug events.
No existing user software is expected to examine signal codes for these
signals as SI_KERNEL has been always used here. This change makes the
MIPS port more like other Linux ports, which reduces the complexity and
provides for performance improvement in GDB.
Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Pedro Alves <palves@redhat.com>
Cc: Luis Machado <lgustavo@codesourcery.com>
Cc: linux-mips@linux-mips.org
Cc: gdb@sourceware.org
Patchwork: https://patchwork.linux-mips.org/patch/12758/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/mips-r2-to-r6-emul.h')
| -rw-r--r-- | arch/mips/include/asm/mips-r2-to-r6-emul.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/include/asm/mips-r2-to-r6-emul.h b/arch/mips/include/asm/mips-r2-to-r6-emul.h index 1f6ea8352ca9..20621e1ca238 100644 --- a/arch/mips/include/asm/mips-r2-to-r6-emul.h +++ b/arch/mips/include/asm/mips-r2-to-r6-emul.h @@ -79,7 +79,7 @@ struct r2_decoder_table { }; -extern void do_trap_or_bp(struct pt_regs *regs, unsigned int code, +extern void do_trap_or_bp(struct pt_regs *regs, unsigned int code, int si_code, const char *str); #ifndef CONFIG_MIPSR2_TO_R6_EMULATOR |