diff options
| author | Timothy E Baldwin <T.E.Baldwin99@members.leeds.ac.uk> | 2016-05-12 18:47:36 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2016-05-27 14:49:50 +0300 |
| commit | 338c858c946017cd3ec8c2be06d817e001d94bc3 (patch) | |
| tree | 7fd5c85bda977aeb2e73c016cc2843324928b5e8 /linux-user/signal.c | |
| parent | ba41249678f8c1504bf07706ddb0eda0d36cccc2 (diff) | |
linux-user: Support for restarting system calls for Alpha targets
Update the Alpha main loop and sigreturn code:
* on TARGET_ERESTARTSYS, wind guest PC backwards to repeat syscall insn
* handle TARGET_QEMU_ESIGRETURN in the main loop as the indication
that the main loop should not touch any guest CPU state
Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Message-id: 1441497448-32489-13-git-send-email-T.E.Baldwin99@members.leeds.ac.uk
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: tweak commit message; drop TARGET_USE_ERESTARTSYS define;
PC is env->pc, not env->ir[IR_PV]]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user/signal.c')
| -rw-r--r-- | linux-user/signal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 8b5ddf2ad3..559e7640a5 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -5527,7 +5527,7 @@ long do_sigreturn(CPUAlphaState *env) restore_sigcontext(env, sc); unlock_user_struct(sc, sc_addr, 0); - return env->ir[IR_V0]; + return -TARGET_QEMU_ESIGRETURN; badframe: force_sig(TARGET_SIGSEGV); @@ -5554,7 +5554,7 @@ long do_rt_sigreturn(CPUAlphaState *env) } unlock_user_struct(frame, frame_addr, 0); - return env->ir[IR_V0]; + return -TARGET_QEMU_ESIGRETURN; badframe: |