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 <[EMAIL PROTECTED]>
diff -urN linux-2.5/arch/ppc/kernel/traps.c pmac-2.5/arch/ppc/kernel/traps.c
--- linux-2.5/arch/ppc/kernel/traps.c 2005-03-29 16:24:53.000000000 +1000
+++ pmac-2.5/arch/ppc/kernel/traps.c 2005-03-31 08:37:53.000000000 +1000
@@ -679,6 +701,7 @@
fixed = fix_alignment(regs);
if (fixed == 1) {
regs->nip += 4; /* skip over emulated instruction */
+ emulate_single_step(regs);
return;
}
if (fixed == -EFAULT) {
-
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