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authorChris Metcalf <cmetcalf@tilera.com>2012-05-16 14:54:20 -0400
committerChris Metcalf <cmetcalf@tilera.com>2012-05-16 16:01:45 -0400
commita134d228298c6aa9007205c6b81cae0cac0acb5d (patch)
treeab8167107994e8571c5002cc28eaf10be7ab3997
parentfc327e268fbef08e129ad51aa3a7113ee9bc6ba5 (diff)
downloadlinux-stericsson-a134d228298c6aa9007205c6b81cae0cac0acb5d.tar.gz
arch/tile: apply commit 74fca9da0 to the compat signal handling as well
This passes siginfo and mcontext to tilegx32 signal handlers that don't have SA_SIGINFO set just as we have been doing for tilegx64. Cc: stable@vger.kernel.org Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
-rw-r--r--arch/tile/kernel/compat_signal.c12
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c
index 77763ccd5a7d..cdef6e5ec022 100644
--- a/arch/tile/kernel/compat_signal.c
+++ b/arch/tile/kernel/compat_signal.c
@@ -403,19 +403,17 @@ int compat_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
* Set up registers for signal handler.
* Registers that we don't modify keep the value they had from
* user-space at the time we took the signal.
+ * We always pass siginfo and mcontext, regardless of SA_SIGINFO,
+ * since some things rely on this (e.g. glibc's debug/segfault.c).
*/
regs->pc = ptr_to_compat_reg(ka->sa.sa_handler);
regs->ex1 = PL_ICS_EX1(USER_PL, 1); /* set crit sec in handler */
regs->sp = ptr_to_compat_reg(frame);
regs->lr = restorer;
regs->regs[0] = (unsigned long) usig;
-
- if (ka->sa.sa_flags & SA_SIGINFO) {
- /* Need extra arguments, so mark to restore caller-saves. */
- regs->regs[1] = ptr_to_compat_reg(&frame->info);
- regs->regs[2] = ptr_to_compat_reg(&frame->uc);
- regs->flags |= PT_FLAGS_CALLER_SAVES;
- }
+ regs->regs[1] = ptr_to_compat_reg(&frame->info);
+ regs->regs[2] = ptr_to_compat_reg(&frame->uc);
+ regs->flags |= PT_FLAGS_CALLER_SAVES;
/*
* Notify any tracer that was single-stepping it.