[Qemu-devel] [PATCH v7 58/74] linux-user: Split out sigprocmask, rt_sigprocmask

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

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/syscall-defs.h    |   6 ++
 linux-user/syscall.h         |   1 +
 linux-user/strace.c          |  44 +++++++------
 linux-user/syscall-sig.inc.c | 123 +++++++++++++++++++++++++++++++++++
 linux-user/syscall.c         | 109 -------------------------------
 linux-user/strace.list       |   6 --
 6 files changed, 154 insertions(+), 135 deletions(-)

diff --git a/linux-user/syscall-defs.h b/linux-user/syscall-defs.h
index 99532f75b2..ef77f60524 100644
--- a/linux-user/syscall-defs.h
+++ b/linux-user/syscall-defs.h
@@ -194,6 +194,7 @@ SYSCALL_DEF(rt_sigaction, ARG_SIGNAL, ARG_PTR, ARG_PTR, ARG_PTR, ARG_DEC);
 #else
 SYSCALL_DEF(rt_sigaction, ARG_SIGNAL, ARG_PTR, ARG_PTR, ARG_DEC);
 #endif
+SYSCALL_DEF(rt_sigprocmask, ARG_SIGPROCMASKHOW, ARG_PTR, ARG_PTR, ARG_DEC);
 #if !defined(SYSCALL_TABLE) || defined(TARGET_NR_semctl)
 SYSCALL_DEF(semctl, ARG_DEC, ARG_DEC, ARG_DEC, ARG_HEX);
 #endif
@@ -222,6 +223,11 @@ SYSCALL_DEF(shmget, ARG_DEC, ARG_DEC, ARG_HEX);
 #ifdef TARGET_NR_sigaction
 SYSCALL_DEF(sigaction, ARG_SIGNAL, ARG_PTR, ARG_PTR);
 #endif
+#if defined(TARGET_ALPHA)
+SYSCALL_DEF(sigprocmask, ARG_SIGPROCMASKHOW, ARG_HEX);
+#elif defined(TARGET_NR_sigprocmask)
+SYSCALL_DEF(sigprocmask, ARG_SIGPROCMASKHOW, ARG_PTR, ARG_PTR);
+#endif
 #ifdef TARGET_NR_sgetmask
 SYSCALL_DEF(sgetmask);
 #endif
diff --git a/linux-user/syscall.h b/linux-user/syscall.h
index 7b197840f5..cf9f3e5e55 100644
--- a/linux-user/syscall.h
+++ b/linux-user/syscall.h
@@ -59,6 +59,7 @@ typedef enum {
     ARG_ATDIRFD,
     ARG_SIGNAL,
     ARG_LSEEKWHENCE,
+    ARG_SIGPROCMASKHOW,
 
     /* These print as sets of flags.  */
     ARG_ACCESSFLAG,
diff --git a/linux-user/strace.c b/linux-user/strace.c
index 83dd755c73..886663af2e 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -102,6 +102,27 @@ add_signal(char *buf, int size, int sig)
     }
 }
 
+static int
+add_sigprocmaskhow(char *buf, int size, int how)
+{
+    const char *str;
+
+    switch (how) {
+    case TARGET_SIG_BLOCK:
+        str = "SIG_BLOCK";
+        break;
+    case TARGET_SIG_UNBLOCK:
+        str = "SIG_UNBLOCK";
+        break;
+    case TARGET_SIG_SETMASK:
+        str = "SIG_SETMASK";
+        break;
+    default:
+        return snprintf(buf, size, "%d", how);
+    }
+    return snprintf(buf, size, "%s", str);
+}
+
 static void
 print_signal(abi_ulong arg, int last)
 {
@@ -1564,26 +1585,6 @@ print_fstat(const struct syscallname *name,
 #define print_fstat64     print_fstat
 #endif
 
-#ifdef TARGET_NR_rt_sigprocmask
-static void
-print_rt_sigprocmask(const struct syscallname *name,
-    abi_long arg0, abi_long arg1, abi_long arg2,
-    abi_long arg3, abi_long arg4, abi_long arg5)
-{
-    const char *how = "UNKNOWN";
-    print_syscall_prologue(name);
-    switch(arg0) {
-    case TARGET_SIG_BLOCK: how = "SIG_BLOCK"; break;
-    case TARGET_SIG_UNBLOCK: how = "SIG_UNBLOCK"; break;
-    case TARGET_SIG_SETMASK: how = "SIG_SETMASK"; break;
-    }
-    gemu_log("%s,",how);
-    print_pointer(arg1, 0);
-    print_pointer(arg2, 1);
-    print_syscall_epilogue(name);
-}
-#endif
-
 #ifdef TARGET_NR_rt_sigqueueinfo
 static void
 print_rt_sigqueueinfo(const struct syscallname *name,
@@ -2015,6 +2016,9 @@ static void print_syscall_def1(const SyscallDef *def, int64_t args[6])
         case ARG_SIGNAL:
             len = add_signal(b, rest, arg);
             break;
+        case ARG_SIGPROCMASKHOW:
+            len = add_sigprocmaskhow(b, rest, arg);
+            break;
         case ARG_ACCESSFLAG:
             len = add_flags(b, rest, access_flags, arg, false);
             break;
diff --git a/linux-user/syscall-sig.inc.c b/linux-user/syscall-sig.inc.c
index f50ed16b74..8a6518bdaa 100644
--- a/linux-user/syscall-sig.inc.c
+++ b/linux-user/syscall-sig.inc.c
@@ -117,6 +117,53 @@ SYSCALL_IMPL(rt_sigaction)
     return ret;
 }
 
+SYSCALL_IMPL(rt_sigprocmask)
+{
+    int how = 0;
+    sigset_t set, oldset, *set_ptr = NULL;
+    abi_long ret;
+    void *p;
+
+    if (arg4 != sizeof(target_sigset_t)) {
+        return -TARGET_EINVAL;
+    }
+
+    if (arg2) {
+        switch (arg1) {
+        case TARGET_SIG_BLOCK:
+            how = SIG_BLOCK;
+            break;
+        case TARGET_SIG_UNBLOCK:
+            how = SIG_UNBLOCK;
+            break;
+        case TARGET_SIG_SETMASK:
+            how = SIG_SETMASK;
+            break;
+        default:
+            return -TARGET_EINVAL;
+        }
+        p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1);
+        if (!p) {
+            return -TARGET_EFAULT;
+        }
+        target_to_host_sigset(&set, p);
+        unlock_user(p, arg2, 0);
+        set_ptr = &set;
+    }
+
+    ret = do_sigprocmask(how, set_ptr, &oldset);
+
+    if (!is_error(ret) && arg3) {
+        p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0);
+        if (!p) {
+            return -TARGET_EFAULT;
+        }
+        host_to_target_sigset(p, &oldset);
+        unlock_user(p, arg3, sizeof(target_sigset_t));
+    }
+    return ret;
+}
+
 #ifdef TARGET_NR_sigaction
 SYSCALL_IMPL(sigaction)
 {
@@ -212,6 +259,82 @@ SYSCALL_IMPL(sigaction)
 }
 #endif
 
+#ifdef TARGET_NR_sigprocmask
+SYSCALL_IMPL(sigprocmask)
+{
+#if defined(TARGET_ALPHA)
+    sigset_t set, oldset;
+    abi_ulong mask;
+    int how;
+    abi_long ret;
+
+    switch (arg1) {
+    case TARGET_SIG_BLOCK:
+        how = SIG_BLOCK;
+        break;
+    case TARGET_SIG_UNBLOCK:
+        how = SIG_UNBLOCK;
+        break;
+    case TARGET_SIG_SETMASK:
+        how = SIG_SETMASK;
+        break;
+    default:
+        return -TARGET_EINVAL;
+    }
+    mask = arg2;
+    target_to_host_old_sigset(&set, &mask);
+
+    ret = do_sigprocmask(how, &set, &oldset);
+
+    if (!is_error(ret)) {
+        host_to_target_old_sigset(&mask, &oldset);
+        ret = mask;
+        ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
+    }
+#else
+    sigset_t set, oldset, *set_ptr = NULL;
+    int how = 0;
+    abi_long ret;
+    void *p;
+
+    if (arg2) {
+        switch (arg1) {
+        case TARGET_SIG_BLOCK:
+            how = SIG_BLOCK;
+            break;
+        case TARGET_SIG_UNBLOCK:
+            how = SIG_UNBLOCK;
+            break;
+        case TARGET_SIG_SETMASK:
+            how = SIG_SETMASK;
+            break;
+        default:
+            return -TARGET_EINVAL;
+        }
+        p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1);
+        if (!p) {
+            return -TARGET_EFAULT;
+        }
+        target_to_host_old_sigset(&set, p);
+        unlock_user(p, arg2, 0);
+        set_ptr = &set;
+    }
+
+    ret = do_sigprocmask(how, set_ptr, &oldset);
+
+    if (!is_error(ret) && arg3) {
+        p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0);
+        if (!p) {
+            return -TARGET_EFAULT;
+        }
+        host_to_target_old_sigset(p, &oldset);
+        unlock_user(p, arg3, sizeof(target_sigset_t));
+    }
+#endif
+    return ret;
+}
+#endif
+
 #ifdef TARGET_NR_sgetmask
 SYSCALL_IMPL(sgetmask)
 {
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 7bd410bcf0..11bbdfade4 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4241,115 +4241,6 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
     void *p;
 
     switch(num) {
-#ifdef TARGET_NR_sigprocmask
-    case TARGET_NR_sigprocmask:
-        {
-#if defined(TARGET_ALPHA)
-            sigset_t set, oldset;
-            abi_ulong mask;
-            int how;
-
-            switch (arg1) {
-            case TARGET_SIG_BLOCK:
-                how = SIG_BLOCK;
-                break;
-            case TARGET_SIG_UNBLOCK:
-                how = SIG_UNBLOCK;
-                break;
-            case TARGET_SIG_SETMASK:
-                how = SIG_SETMASK;
-                break;
-            default:
-                return -TARGET_EINVAL;
-            }
-            mask = arg2;
-            target_to_host_old_sigset(&set, &mask);
-
-            ret = do_sigprocmask(how, &set, &oldset);
-            if (!is_error(ret)) {
-                host_to_target_old_sigset(&mask, &oldset);
-                ret = mask;
-                ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */
-            }
-#else
-            sigset_t set, oldset, *set_ptr;
-            int how;
-
-            if (arg2) {
-                switch (arg1) {
-                case TARGET_SIG_BLOCK:
-                    how = SIG_BLOCK;
-                    break;
-                case TARGET_SIG_UNBLOCK:
-                    how = SIG_UNBLOCK;
-                    break;
-                case TARGET_SIG_SETMASK:
-                    how = SIG_SETMASK;
-                    break;
-                default:
-                    return -TARGET_EINVAL;
-                }
-                if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
-                    return -TARGET_EFAULT;
-                target_to_host_old_sigset(&set, p);
-                unlock_user(p, arg2, 0);
-                set_ptr = &set;
-            } else {
-                how = 0;
-                set_ptr = NULL;
-            }
-            ret = do_sigprocmask(how, set_ptr, &oldset);
-            if (!is_error(ret) && arg3) {
-                if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
-                    return -TARGET_EFAULT;
-                host_to_target_old_sigset(p, &oldset);
-                unlock_user(p, arg3, sizeof(target_sigset_t));
-            }
-#endif
-        }
-        return ret;
-#endif
-    case TARGET_NR_rt_sigprocmask:
-        {
-            int how = arg1;
-            sigset_t set, oldset, *set_ptr;
-
-            if (arg4 != sizeof(target_sigset_t)) {
-                return -TARGET_EINVAL;
-            }
-
-            if (arg2) {
-                switch(how) {
-                case TARGET_SIG_BLOCK:
-                    how = SIG_BLOCK;
-                    break;
-                case TARGET_SIG_UNBLOCK:
-                    how = SIG_UNBLOCK;
-                    break;
-                case TARGET_SIG_SETMASK:
-                    how = SIG_SETMASK;
-                    break;
-                default:
-                    return -TARGET_EINVAL;
-                }
-                if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1)))
-                    return -TARGET_EFAULT;
-                target_to_host_sigset(&set, p);
-                unlock_user(p, arg2, 0);
-                set_ptr = &set;
-            } else {
-                how = 0;
-                set_ptr = NULL;
-            }
-            ret = do_sigprocmask(how, set_ptr, &oldset);
-            if (!is_error(ret) && arg3) {
-                if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0)))
-                    return -TARGET_EFAULT;
-                host_to_target_sigset(p, &oldset);
-                unlock_user(p, arg3, sizeof(target_sigset_t));
-            }
-        }
-        return ret;
 #ifdef TARGET_NR_sigpending
     case TARGET_NR_sigpending:
         {
diff --git a/linux-user/strace.list b/linux-user/strace.list
index 3cad68e081..7157876302 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -929,9 +929,6 @@
 #ifdef TARGET_NR_rt_sigpending
 { TARGET_NR_rt_sigpending, "rt_sigpending" , NULL, NULL, NULL },
 #endif
-#ifdef TARGET_NR_rt_sigprocmask
-{ TARGET_NR_rt_sigprocmask, "rt_sigprocmask" , NULL, print_rt_sigprocmask, NULL },
-#endif
 #ifdef TARGET_NR_rt_sigqueueinfo
 { TARGET_NR_rt_sigqueueinfo, "rt_sigqueueinfo" , NULL, print_rt_sigqueueinfo, NULL },
 #endif
@@ -1134,9 +1131,6 @@
 #ifdef TARGET_NR_sigpending
 { TARGET_NR_sigpending, "sigpending" , NULL, NULL, NULL },
 #endif
-#ifdef TARGET_NR_sigprocmask
-{ TARGET_NR_sigprocmask, "sigprocmask" , NULL, NULL, NULL },
-#endif
 #ifdef TARGET_NR_sigreturn
 { TARGET_NR_sigreturn, "sigreturn" , NULL, NULL, NULL },
 #endif
-- 
2.17.1