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[Qemu-devel] [PATCH 33/34] linux-user: Support for restarting system cal
From: |
Timothy E Baldwin |
Subject: |
[Qemu-devel] [PATCH 33/34] linux-user: Support for restarting system calls for CRIS targets |
Date: |
Sun, 6 Sep 2015 00:57:27 +0100 |
Signed-off-by: Timothy Edward Baldwin <address@hidden>
---
WARNING - NOT TESTED
linux-user/cris/syscall.h | 2 ++
linux-user/main.c | 6 +++++-
linux-user/signal.c | 2 +-
3 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/linux-user/cris/syscall.h b/linux-user/cris/syscall.h
index 2957b0d..29218e2 100644
--- a/linux-user/cris/syscall.h
+++ b/linux-user/cris/syscall.h
@@ -44,3 +44,5 @@ struct target_pt_regs {
#define TARGET_MLOCKALL_MCL_FUTURE 2
#endif
+
+#define TARGET_USE_ERESTARTSYS 1
diff --git a/linux-user/main.c b/linux-user/main.c
index a59907e..a9eb15c 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -2878,7 +2878,11 @@ void cpu_loop(CPUCRISState *env)
env->pregs[7],
env->pregs[11],
0, 0);
- env->regs[10] = ret;
+ if (ret == -TARGET_ERESTARTSYS) {
+ env->pc -= 2;
+ } else if (ret != -TARGET_QEMU_ESIGRETURN) {
+ env->regs[10] = ret;
+ }
break;
case EXCP_DEBUG:
{
diff --git a/linux-user/signal.c b/linux-user/signal.c
index e17514e..3741517 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -3761,7 +3761,7 @@ long do_sigreturn(CPUCRISState *env)
restore_sigcontext(&frame->sc, env);
unlock_user_struct(frame, frame_addr, 0);
- return env->regs[10];
+ return -TARGET_QEMU_ESIGRETURN;
badframe:
force_sig(TARGET_SIGSEGV);
}
--
2.1.4
- [Qemu-devel] [PATCH 29/34] linux-user: Support for restarting system calls for UniCore32 targets, (continued)
- [Qemu-devel] [PATCH 29/34] linux-user: Support for restarting system calls for UniCore32 targets, Timothy E Baldwin, 2015/09/05
- [Qemu-devel] [PATCH 12/34] linux-user: Support for restarting system calls for APLHA targets, Timothy E Baldwin, 2015/09/05
- [Qemu-devel] [PATCH 28/34] linux-user: Restart sigaction() if signal pending, Timothy E Baldwin, 2015/09/05
- [Qemu-devel] [PATCH 23/34] linux-user: Queue synchronous signals separately, Timothy E Baldwin, 2015/09/05
- [Qemu-devel] [PATCH 32/34] linux-user: Support for restarting system calls for S390 targets, Timothy E Baldwin, 2015/09/05
- [Qemu-devel] [PATCH 22/34] linux-user: Remove real-time signal queuing, Timothy E Baldwin, 2015/09/05
- [Qemu-devel] [PATCH 33/34] linux-user: Support for restarting system calls for CRIS targets,
Timothy E Baldwin <=
[Qemu-devel] [PATCH 18/34] linux-user: Fix race between multiple signals, Timothy E Baldwin, 2015/09/05
[Qemu-devel] [PATCH 24/34] linux-user: Restart execve() if signal pending, Timothy E Baldwin, 2015/09/05
[Qemu-devel] [PATCH 34/34] linux-user: Remove TARGET_USE_ERESTARTSYS, Timothy E Baldwin, 2015/09/05