motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-06 01:03:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

linux-user: Use target_restore_altstack in all sigreturn

Browse source 
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 <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2021-04-25 19:53:11 -07:00 • committed by Laurent Vivier
parent 92bad94836
commit 56384cf3ad
16 changed files with 18 additions and 81 deletions
Download patch file Download diff file Expand all files Collapse all files

5
linux-user/openrisc/signal.c
View file

@ -158,10 +158,7 @@ long do_rt_sigreturn(CPUOpenRISCState *env)
set_sigmask(&set);
restore_sigcontext(env, &frame->uc.tuc_mcontext);
if (do_sigaltstack(frame_addr + offsetof(target_rt_sigframe, uc.tuc_stack),
0, frame_addr) == -EFAULT) {
goto badframe;
}
target_restore_altstack(&frame->uc.tuc_stack, frame_addr);
unlock_user_struct(frame, frame_addr, 0);
return cpu_get_gpr(env, 11);