motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-21 17:11:57 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

linux-user: Support for restarting system calls for S390 targets

Browse source 
Update the S390 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 on sigreturn
 * 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: 1441497448-32489-33-git-send-email-T.E.Baldwin99@members.leeds.ac.uk
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: tweak commit message; remove stray double semicolon; drop
 TARGET_USE_ERESTARTSYS define]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Timothy E Baldwin 2016-05-12 18:47:40 +01:00 • committed by Riku Voipio
parent 7ccb84a916
commit 47405ab642
3 changed files with 12 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

4
linux-user/signal.c
View file

@ -4280,7 +4280,7 @@ long do_sigreturn(CPUS390XState *env)
}
unlock_user_struct(frame, frame_addr, 0);
return env->regs[2];
return -TARGET_QEMU_ESIGRETURN;
badframe:
force_sig(TARGET_SIGSEGV);
@ -4310,7 +4310,7 @@ long do_rt_sigreturn(CPUS390XState *env)
goto badframe;
}
unlock_user_struct(frame, frame_addr, 0);
return env->regs[2];
return -TARGET_QEMU_ESIGRETURN;
badframe:
unlock_user_struct(frame, frame_addr, 0);