From: Russell King Date: Sun, 20 Feb 2011 12:22:52 +0000 (+0000) Subject: ARM: Ensure predictable endian state on signal handler entry X-Git-Tag: v2.6.38-rc6~13^2~4 X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=53399053eb505cf541b2405bd9d9bca5ecfb96fb;p=~emulex%2Finfiniband.git 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: Acked-by: Dave Martin Signed-off-by: Russell King --- diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 907d5a620bc..abaf8445ce2 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.