linux-user/alpha: Share code for TARGET_NR_sigaction

There's no longer a difference between the alpha code and
the generic code.

There is a type difference in target_old_sigaction.sa_flags,
which can be resolved with a very much smaller ifdef, which
allows us to finish sharing the target_sigaction definition.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210422230227.314751-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

2 files changed, 7 insertions, 37 deletions

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 048056b..8d7ac1e 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8980,28 +8980,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
 #ifdef TARGET_NR_sigaction
     case TARGET_NR_sigaction:
         {
-#if defined(TARGET_ALPHA)
-            struct target_sigaction act, oact, *pact = 0;
-            struct target_old_sigaction *old_act;
-            if (arg2) {
-                if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1))
-                    return -TARGET_EFAULT;
-                act._sa_handler = old_act->_sa_handler;
-                target_siginitset(&act.sa_mask, old_act->sa_mask);
-                act.sa_flags = old_act->sa_flags;
-                unlock_user_struct(old_act, arg2, 0);
-                pact = &act;
-            }
-            ret = get_errno(do_sigaction(arg1, pact, &oact, 0));
-            if (!is_error(ret) && arg3) {
-                if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0))
-                    return -TARGET_EFAULT;
-                old_act->_sa_handler = oact._sa_handler;
-                old_act->sa_mask = oact.sa_mask.sig[0];
-                old_act->sa_flags = oact.sa_flags;
-                unlock_user_struct(old_act, arg3, 1);
-            }
-#elif defined(TARGET_MIPS)
+#if defined(TARGET_MIPS)
 	    struct target_sigaction act, oact, *pact, *old_act;
 
 	    if (arg2) {
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 7a1d3b2..18b031a 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -501,21 +501,12 @@ int do_sigaction(int sig, const struct target_sigaction *act,
 #endif
 
 #if defined(TARGET_ALPHA)
-struct target_old_sigaction {
-    abi_ulong _sa_handler;
-    abi_ulong sa_mask;
-    int32_t sa_flags;
-};
+typedef int32_t target_old_sa_flags;
+#else
+typedef abi_ulong target_old_sa_flags;
+#endif
 
-/* This is the struct used inside the kernel.  The ka_restorer
-   field comes from the 5th argument to sys_rt_sigaction.  */
-struct target_sigaction {
-    abi_ulong _sa_handler;
-    abi_ulong sa_flags;
-    target_sigset_t sa_mask;
-    abi_ulong ka_restorer;
-};
-#elif defined(TARGET_MIPS)
+#if defined(TARGET_MIPS)
 struct target_sigaction {
 	uint32_t	sa_flags;
 #if defined(TARGET_ABI_MIPSN32)
@@ -533,7 +524,7 @@ struct target_sigaction {
 struct target_old_sigaction {
         abi_ulong _sa_handler;
         abi_ulong sa_mask;
-        abi_ulong sa_flags;
+        target_old_sa_flags sa_flags;
 #ifdef TARGET_ARCH_HAS_SA_RESTORER
         abi_ulong sa_restorer;
 #endif