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/ppc/signal.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'linux-user/ppc') diff --git a/linux-user/ppc/signal.c b/linux-user/ppc/signal.c index bad38f8ed9..b44d5ce73c 100644 --- a/linux-user/ppc/signal.c +++ b/linux-user/ppc/signal.c @@ -655,9 +655,7 @@ long do_rt_sigreturn(CPUPPCState *env) if (do_setcontext(&rt_sf->uc, env, 1)) goto sigsegv; - do_sigaltstack(rt_sf_addr - + offsetof(struct target_rt_sigframe, uc.tuc_stack), - 0, env->gpr[1]); + target_restore_altstack(&rt_sf->uc.tuc_stack, env->gpr[1]); unlock_user_struct(rt_sf, rt_sf_addr, 1); return -TARGET_QEMU_ESIGRETURN; -- cgit v1.2.3