From 56384cf3adaeb15bab479be328605e301ae253f2 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Sun, 25 Apr 2021 19:53:11 -0700 Subject: linux-user: Use target_restore_altstack in all sigreturn Note that target_restore_altstack uses the host memory pointer that we have already verified, so TARGET_EFAULT is not a possible return value. Note that using -EFAULT was a bug. Signed-off-by: Richard Henderson Message-Id: <20210426025334.1168495-3-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier --- linux-user/alpha/signal.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'linux-user/alpha') diff --git a/linux-user/alpha/signal.c b/linux-user/alpha/signal.c index c5c27ce..0af0227 100644 --- a/linux-user/alpha/signal.c +++ b/linux-user/alpha/signal.c @@ -257,11 +257,7 @@ long do_rt_sigreturn(CPUAlphaState *env) set_sigmask(&set); restore_sigcontext(env, &frame->uc.tuc_mcontext); - if (do_sigaltstack(frame_addr + offsetof(struct target_rt_sigframe, - uc.tuc_stack), - 0, env->ir[IR_SP]) == -EFAULT) { - goto badframe; - } + target_restore_altstack(&frame->uc.tuc_stack, env->ir[IR_SP]); unlock_user_struct(frame, frame_addr, 0); return -TARGET_QEMU_ESIGRETURN; -- cgit v1.1