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| author | Andreas Schwab <schwab@linux-m68k.org> | 2009-05-19 15:38:01 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2009-12-04 21:22:35 +0100 |
| commit | f195e2bff3000b8bc251ee6f685e0f027eec6f25 (patch) | |
| tree | 6a872faedca9f07af26b7ba90551258a10a3bd94 /arch/m68k/kernel/entry.S | |
| parent | faa47b466935e73251b18b17d51455b06ed65764 (diff) | |
| download | linux-f195e2bff3000b8bc251ee6f685e0f027eec6f25.tar.gz | |
m68k: ptrace fixes
This fixes the following issues in ptrace: - when single stepping into the signal handler stop at the first insn of the handler - handle non-zero stkadj when accessing pc and sr in ptregs - correctly handle PT_SR in PTRACE_POKEUSR - report -EIO when trying to read unknown offset in PTRACE_PEEKUSR Additionally, the handling of the special case that PT_SR accesses a 16 bit word instead of a 32 bit word has been moved into get_reg/put_reg. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/kernel/entry.S')
| -rw-r--r-- | arch/m68k/kernel/entry.S | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S index c5b33634c980..77fc7c16bf48 100644 --- a/arch/m68k/kernel/entry.S +++ b/arch/m68k/kernel/entry.S @@ -179,7 +179,11 @@ do_signal_return: addql #8,%sp RESTORE_SWITCH_STACK addql #4,%sp - jbra resume_userspace + tstl %d0 + jeq resume_userspace + | when single stepping into handler stop at the first insn + btst #6,%curptr@(TASK_INFO+TINFO_FLAGS+2) + jeq resume_userspace do_delayed_trace: bclr #7,%sp@(PT_OFF_SR) | clear trace bit in SR |