[Qemu-devel] [PATCH v7 60/74] linux-user: Split out sigsuspend, rt_sigsuspend

[Richard Henderson <richard.henderson@linaro.org>]

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/syscall-defs.h    |  6 +++++
 linux-user/syscall-sig.inc.c | 51 ++++++++++++++++++++++++++++++++++++
 linux-user/syscall.c         | 42 ++---------------------------
 linux-user/strace.list       |  6 -----
 4 files changed, 59 insertions(+), 46 deletions(-)

diff --git a/linux-user/syscall-defs.h b/linux-user/syscall-defs.h
index 83a69246d0..2b930f5599 100644
--- a/linux-user/syscall-defs.h
+++ b/linux-user/syscall-defs.h
@@ -196,6 +196,7 @@ SYSCALL_DEF(rt_sigaction, ARG_SIGNAL, ARG_PTR, ARG_PTR, ARG_DEC);
 #endif
 SYSCALL_DEF(rt_sigpending, ARG_PTR, ARG_DEC);
 SYSCALL_DEF(rt_sigprocmask, ARG_SIGPROCMASKHOW, ARG_PTR, ARG_PTR, ARG_DEC);
+SYSCALL_DEF(rt_sigsuspend, ARG_PTR, ARG_DEC);
 #if !defined(SYSCALL_TABLE) || defined(TARGET_NR_semctl)
 SYSCALL_DEF(semctl, ARG_DEC, ARG_DEC, ARG_DEC, ARG_HEX);
 #endif
@@ -232,6 +233,11 @@ SYSCALL_DEF(sigprocmask, ARG_SIGPROCMASKHOW, ARG_HEX);
 #elif defined(TARGET_NR_sigprocmask)
 SYSCALL_DEF(sigprocmask, ARG_SIGPROCMASKHOW, ARG_PTR, ARG_PTR);
 #endif
+#if defined(TARGET_ALPHA)
+SYSCALL_DEF(sigsuspend, ARG_HEX);
+#elif defined(TARGET_NR_sigsuspend)
+SYSCALL_DEF(sigsuspend, ARG_PTR);
+#endif
 #ifdef TARGET_NR_sgetmask
 SYSCALL_DEF(sgetmask);
 #endif
diff --git a/linux-user/syscall-sig.inc.c b/linux-user/syscall-sig.inc.c
index fe717a5121..23ea14e2a6 100644
--- a/linux-user/syscall-sig.inc.c
+++ b/linux-user/syscall-sig.inc.c
@@ -191,6 +191,30 @@ SYSCALL_IMPL(rt_sigprocmask)
     return ret;
 }
 
+SYSCALL_IMPL(rt_sigsuspend)
+{
+    CPUState *cpu = ENV_GET_CPU(cpu_env);
+    TaskState *ts = cpu->opaque;
+    abi_long ret;
+    void *p;
+
+    if (arg2 != sizeof(target_sigset_t)) {
+        return -TARGET_EINVAL;
+    }
+    p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1);
+    if (!p) {
+        return -TARGET_EFAULT;
+    }
+    target_to_host_sigset(&ts->sigsuspend_mask, p);
+    unlock_user(p, arg1, 0);
+
+    ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, SIGSET_T_SIZE));
+    if (ret != -TARGET_ERESTARTSYS) {
+        ts->in_sigsuspend = 1;
+    }
+    return ret;
+}
+
 #ifdef TARGET_NR_sigaction
 SYSCALL_IMPL(sigaction)
 {
@@ -380,6 +404,33 @@ SYSCALL_IMPL(sigprocmask)
 }
 #endif
 
+#ifdef TARGET_NR_sigsuspend
+SYSCALL_IMPL(sigsuspend)
+{
+    CPUState *cpu = ENV_GET_CPU(cpu_env);
+    TaskState *ts = cpu->opaque;
+    abi_long ret;
+
+#if defined(TARGET_ALPHA)
+    abi_ulong mask = arg1;
+    target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
+#else
+    void *p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1);
+    if (!p) {
+        return -TARGET_EFAULT;
+    }
+    target_to_host_old_sigset(&ts->sigsuspend_mask, p);
+    unlock_user(p, arg1, 0);
+#endif
+
+    ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask, SIGSET_T_SIZE));
+    if (ret != -TARGET_ERESTARTSYS) {
+        ts->in_sigsuspend = 1;
+    }
+    return ret;
+}
+#endif
+
 #ifdef TARGET_NR_sgetmask
 SYSCALL_IMPL(sgetmask)
 {
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 7dda237c95..00f4ba8753 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4227,7 +4227,6 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
                             abi_long arg5, abi_long arg6, abi_long arg7,
                             abi_long arg8)
 {
-    CPUState *cpu = ENV_GET_CPU(cpu_env);
     abi_long ret;
 #if defined(TARGET_NR_stat) || defined(TARGET_NR_stat64) \
     || defined(TARGET_NR_lstat) || defined(TARGET_NR_lstat64) \
@@ -4241,45 +4240,6 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
     void *p;
 
     switch(num) {
-#ifdef TARGET_NR_sigsuspend
-    case TARGET_NR_sigsuspend:
-        {
-            TaskState *ts = cpu->opaque;
-#if defined(TARGET_ALPHA)
-            abi_ulong mask = arg1;
-            target_to_host_old_sigset(&ts->sigsuspend_mask, &mask);
-#else
-            if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
-                return -TARGET_EFAULT;
-            target_to_host_old_sigset(&ts->sigsuspend_mask, p);
-            unlock_user(p, arg1, 0);
-#endif
-            ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
-                                               SIGSET_T_SIZE));
-            if (ret != -TARGET_ERESTARTSYS) {
-                ts->in_sigsuspend = 1;
-            }
-        }
-        return ret;
-#endif
-    case TARGET_NR_rt_sigsuspend:
-        {
-            TaskState *ts = cpu->opaque;
-
-            if (arg2 != sizeof(target_sigset_t)) {
-                return -TARGET_EINVAL;
-            }
-            if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1)))
-                return -TARGET_EFAULT;
-            target_to_host_sigset(&ts->sigsuspend_mask, p);
-            unlock_user(p, arg1, 0);
-            ret = get_errno(safe_rt_sigsuspend(&ts->sigsuspend_mask,
-                                               SIGSET_T_SIZE));
-            if (ret != -TARGET_ERESTARTSYS) {
-                ts->in_sigsuspend = 1;
-            }
-        }
-        return ret;
     case TARGET_NR_rt_sigtimedwait:
         {
             sigset_t set;
@@ -6659,6 +6619,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
       return do_set_thread_area(cpu_env, arg1);
 #elif defined(TARGET_M68K)
       {
+          CPUState *cpu = ENV_GET_CPU(cpu_env);
           TaskState *ts = cpu->opaque;
           ts->tp_value = arg1;
           return 0;
@@ -6673,6 +6634,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
         return do_get_thread_area(cpu_env, arg1);
 #elif defined(TARGET_M68K)
         {
+            CPUState *cpu = ENV_GET_CPU(cpu_env);
             TaskState *ts = cpu->opaque;
             return ts->tp_value;
         }
diff --git a/linux-user/strace.list b/linux-user/strace.list
index 978e47bf0e..26df8b25cd 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -932,9 +932,6 @@
 #ifdef TARGET_NR_rt_sigreturn
 { TARGET_NR_rt_sigreturn, "rt_sigreturn" , NULL, NULL, NULL },
 #endif
-#ifdef TARGET_NR_rt_sigsuspend
-{ TARGET_NR_rt_sigsuspend, "rt_sigsuspend" , NULL, NULL, NULL },
-#endif
 #ifdef TARGET_NR_rt_sigtimedwait
 { TARGET_NR_rt_sigtimedwait, "rt_sigtimedwait" , NULL, NULL, NULL },
 #endif
@@ -1128,9 +1125,6 @@
 #ifdef TARGET_NR_sigreturn
 { TARGET_NR_sigreturn, "sigreturn" , NULL, NULL, NULL },
 #endif
-#ifdef TARGET_NR_sigsuspend
-{ TARGET_NR_sigsuspend, "sigsuspend" , NULL, NULL, NULL },
-#endif
 #ifdef TARGET_NR_socket
 { TARGET_NR_socket, "socket" , NULL, print_socket, NULL },
 #endif
-- 
2.17.1