diff options
| author | Russell King <[email protected]> | 2011-02-20 12:22:52 +0000 |
|---|---|---|
| committer | Russell King <[email protected]> | 2011-02-21 19:29:26 +0000 |
| commit | 53399053eb505cf541b2405bd9d9bca5ecfb96fb (patch) | |
| tree | 05b7fff7b081592087df18449dd6dd72537e522d | |
| parent | dc810efb0ca5702c9d96782b99282d4b4383e877 (diff) | |
ARM: Ensure predictable endian state on signal handler entry
Ensure a predictable endian state when entering signal handlers. This
avoids programs which use SETEND to momentarily switch their endian
state from having their signal handlers entered with an unpredictable
endian state.
Cc: <[email protected]>
Acked-by: Dave Martin <[email protected]>
Signed-off-by: Russell King <[email protected]>
| -rw-r--r-- | arch/arm/kernel/signal.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 907d5a620bca..abaf8445ce25 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -474,7 +474,9 @@ setup_return(struct pt_regs *regs, struct k_sigaction *ka, unsigned long handler = (unsigned long)ka->sa.sa_handler; unsigned long retcode; int thumb = 0; - unsigned long cpsr = regs->ARM_cpsr & ~PSR_f; + unsigned long cpsr = regs->ARM_cpsr & ~(PSR_f | PSR_E_BIT); + + cpsr |= PSR_ENDSTATE; /* * Maybe we need to deliver a 32-bit signal to a 26-bit task. |