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| author | Chris Metcalf <cmetcalf@tilera.com> | 2012-05-16 14:54:20 -0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-05-20 22:56:50 +0100 |
| commit | e3b9dca169250b65f4dbe2460bcf7efe7098f1b7 (patch) | |
| tree | af577abfdbfa73bcf5fbf9e7788e62a3f63e1820 /arch/tile | |
| parent | 6d4e481b77c311118d1cab9356e781ba56047f16 (diff) | |
| download | lwn-e3b9dca169250b65f4dbe2460bcf7efe7098f1b7.tar.gz lwn-e3b9dca169250b65f4dbe2460bcf7efe7098f1b7.zip | |
arch/tile: apply commit 74fca9da0 to the compat signal handling as well
commit a134d228298c6aa9007205c6b81cae0cac0acb5d upstream.
This passes siginfo and mcontext to tilegx32 signal handlers that
don't have SA_SIGINFO set just as we have been doing for tilegx64.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'arch/tile')
| -rw-r--r-- | arch/tile/kernel/compat_signal.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/tile/kernel/compat_signal.c b/arch/tile/kernel/compat_signal.c index a7869ad62776..41459d80b6bf 100644 --- a/arch/tile/kernel/compat_signal.c +++ b/arch/tile/kernel/compat_signal.c @@ -406,19 +406,17 @@ 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. |