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authorPaul Mackerras <paulus@samba.org>2005-04-16 15:24:17 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:24:17 -0700
commit6c26e03b2db4b66d79bfb774628c1fc9b458b943 (patch)
tree1e50046a2daa30da849a88b3ec562a410ebe6f80 /arch/ppc
parente378cc16b0d3c1610857c4444345907020e03ece (diff)
downloadlinux-2.6.34-ux500-6c26e03b2db4b66d79bfb774628c1fc9b458b943.tar.gz
[PATCH] ppc32: fix single-stepping of emulated instructions
On ppc, we emulate instructions that cause alignment exceptions. If we are single-stepping an instruction and it causes an alignment exception, we will currently do the next instruction as well before taking the single-step exception. This patch fixes that, so we take the single-step exception after emulating the instruction. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/ppc')
-rw-r--r--arch/ppc/kernel/traps.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/ppc/kernel/traps.c b/arch/ppc/kernel/traps.c
index aec225b402a..002322a1f3c 100644
--- a/arch/ppc/kernel/traps.c
+++ b/arch/ppc/kernel/traps.c
@@ -679,6 +679,7 @@ void AlignmentException(struct pt_regs *regs)
fixed = fix_alignment(regs);
if (fixed == 1) {
regs->nip += 4; /* skip over emulated instruction */
+ emulate_single_step(regs);
return;
}
if (fixed == -EFAULT) {