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authorKyle McMartin <kyle@parisc-linux.org>2005-10-21 22:43:15 -0400
committerKyle McMartin <kyle@parisc-linux.org>2005-10-21 22:43:15 -0400
commitf053725b8985d10c2cc4b837a80a381104c936a4 (patch)
treeb9539783ec2f608638dd0d92c2c56d49eb19d93e /arch/parisc/kernel
parent99ac79479928bae42d694b7cb53644be5d3b6dd2 (diff)
[PARISC] Add ability for prctl to change unaligned trap behaviour
Add support for changing unaligned trap behaviour on a per-thread basis. Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc/kernel')
-rw-r--r--arch/parisc/kernel/unaligned.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
index 62eea35bcd6..eaae8a021f9 100644
--- a/arch/parisc/kernel/unaligned.c
+++ b/arch/parisc/kernel/unaligned.c
@@ -513,15 +513,18 @@ void handle_unaligned(struct pt_regs *regs)
register int flop=0; /* true if this is a flop */
/* log a message with pacing */
- if (user_mode(regs))
- {
- if (unaligned_count > 5 && jiffies - last_time > 5*HZ)
- {
+ if (user_mode(regs)) {
+ if (current->thread.flags & PARISC_UAC_SIGBUS) {
+ goto force_sigbus;
+ }
+
+ if (unaligned_count > 5 && jiffies - last_time > 5*HZ) {
unaligned_count = 0;
last_time = jiffies;
}
- if (++unaligned_count < 5)
- {
+
+ if (!(current->thread.flags & PARISC_UAC_NOPRINT)
+ && ++unaligned_count < 5) {
char buf[256];
sprintf(buf, "%s(%d): unaligned access to 0x" RFMT " at ip=0x" RFMT "\n",
current->comm, current->pid, regs->ior, regs->iaoq[0]);
@@ -530,6 +533,7 @@ void handle_unaligned(struct pt_regs *regs)
show_regs(regs);
#endif
}
+
if (!unaligned_enabled)
goto force_sigbus;
}