diff options
| author | Timothy E Baldwin <T.E.Baldwin99@members.leeds.ac.uk> | 2016-05-12 18:47:30 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2016-05-27 14:49:49 +0300 |
| commit | 0284b03ba3f47da53b6b46293a3d586c08829f7e (patch) | |
| tree | a7942bf22838565bf88cfccf69af317c36d90725 /linux-user/syscall.c | |
| parent | 499b5d176a77773cab5479264a3d5067176df21c (diff) | |
linux-user: Support for restarting system calls for x86 targets
Update the x86 main loop and sigreturn code:
* on TARGET_ERESTARTSYS, wind guest PC backwards to repeat syscall insn
* set all guest CPU state within signal.c code rather than passing it
back out as the "return code" from do_sigreturn()
* handle TARGET_QEMU_ESIGRETURN in the main loop as the indication
that the main loop should not touch EAX
Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Message-id: 1441497448-32489-5-git-send-email-T.E.Baldwin99@members.leeds.ac.uk
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: Commit message tweaks; drop TARGET_USE_ERESTARTSYS define]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index f4c2e190f8..a4a1af75f6 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -6940,12 +6940,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #ifdef TARGET_NR_sigreturn case TARGET_NR_sigreturn: - /* NOTE: ret is eax, so not transcoding must be done */ ret = do_sigreturn(cpu_env); break; #endif case TARGET_NR_rt_sigreturn: - /* NOTE: ret is eax, so not transcoding must be done */ ret = do_rt_sigreturn(cpu_env); break; case TARGET_NR_sethostname: |