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linux-user/arm: Reset CPSR_E when entering a signal handler 

This fixes signal handlers running with the wrong endianness if the
interrupted code used SETEND to dynamically switch endianness.

Signed-off-by: Amanieu d'Antras <amanieu@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20200511131117.2486486-1-amanieu@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Amanieu d'Antras 2020-05-11 14:11:17 +01:00 committed by Peter Maydell
parent 268b1b3dfb
commit 45e2813964
1 changed files with 7 additions and 1 deletions
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8
linux-user/arm/signal.c
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@ -244,6 +244,11 @@ setup_return(CPUARMState *env, struct target_sigaction *ka,
} else {
cpsr &= ~CPSR_T;
}
if (env->cp15.sctlr_el[1] & SCTLR_E0E) {
cpsr |= CPSR_E;
} else {
cpsr &= ~CPSR_E;
}
if (ka->sa_flags & TARGET_SA_RESTORER) {
if (is_fdpic) {
@ -287,7 +292,8 @@ setup_return(CPUARMState *env, struct target_sigaction *ka,
env->regs[13] = frame_addr;
env->regs[14] = retcode;
env->regs[15] = handler & (thumb ? ~1 : ~3);
cpsr_write(env, cpsr, CPSR_IT | CPSR_T, CPSRWriteByInstr);
cpsr_write(env, cpsr, CPSR_IT | CPSR_T | CPSR_E, CPSRWriteByInstr);
arm_rebuild_hflags(env);
return 0;
}