Remove pre-2.2 Linux kernel support.

1 files changed, 20 insertions, 86 deletions

diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c b/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c
index c3201b8a9e..7bdf5e0bdd 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c
@@ -27,106 +27,40 @@
 static void __rt_sigreturn_stub (void);
 static void __sigreturn_stub (void);
 
-/* The variable is shared between all wrappers around signal handling
-   functions which have RT equivalents.  */
-int __libc_missing_rt_sigs;
-
 int
 __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
 {
   struct old_kernel_sigaction k_sigact, k_osigact;
   int ret;
 
-#ifdef __NR_rt_sigaction
-  /* First try the RT signals.  */
-  if (!__libc_missing_rt_sigs)
-    {
-      struct kernel_sigaction kact, koact;
-      unsigned long stub = 0;
-      int saved_errno = errno;
-
-      if (act)
-	{
-	  kact.k_sa_handler = act->sa_handler;
-	  memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
-	  if (((kact.sa_flags = act->sa_flags) & SA_SIGINFO) != 0)
-	    stub = (unsigned long) &__rt_sigreturn_stub;
-	  else
-	    stub = (unsigned long) &__sigreturn_stub;
-	  stub -= 8;
-	  kact.sa_restorer = NULL;
-	}
-
-      /* XXX The size argument hopefully will have to be changed to the
-	 real size of the user-level sigset_t.  */
-      ret = INLINE_SYSCALL (rt_sigaction, 5, sig, act ? &kact : 0,
-			    oact ? &koact : 0, stub, _NSIG / 8);
-
-      if (ret >= 0 || errno != ENOSYS)
-	{
-	  if (oact && ret >= 0)
-	    {
-	      oact->sa_handler = koact.k_sa_handler;
-	      memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
-	      oact->sa_flags = koact.sa_flags;
-	      oact->sa_restorer = koact.sa_restorer;
-	    }
-	  return ret;
-	}
-
-      __set_errno (saved_errno);
-      __libc_missing_rt_sigs = 1;
-    }
-#endif
-
-  /* Magic to tell the kernel we are using "new-style" signals, in that
-     the signal table is not kept in userspace.  Not the same as the
-     really-new-style rt signals.  */
-  sig = -sig;
+  struct kernel_sigaction kact, koact;
+  unsigned long stub = 0;
 
   if (act)
     {
-      k_sigact.k_sa_handler = act->sa_handler;
-      k_sigact.sa_mask = act->sa_mask.__val[0];
-      k_sigact.sa_flags = act->sa_flags;
-      k_sigact.sa_restorer = NULL;
+      kact.k_sa_handler = act->sa_handler;
+      memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
+      if (((kact.sa_flags = act->sa_flags) & SA_SIGINFO) != 0)
+	stub = (unsigned long) &__rt_sigreturn_stub;
+      else
+	stub = (unsigned long) &__sigreturn_stub;
+      stub -= 8;
+      kact.sa_restorer = NULL;
     }
 
-  {
-    register int r_syscallnr __asm__("%g1") = __NR_sigaction;
-    register int r_sig __asm__("%o0") = sig;
-    register struct old_kernel_sigaction *r_act __asm__("%o1");
-    register struct old_kernel_sigaction *r_oact __asm__("%o2");
-
-    r_act = act ? &k_sigact : NULL;
-    r_oact = oact ? &k_osigact : NULL;
+  /* XXX The size argument hopefully will have to be changed to the
+     real size of the user-level sigset_t.  */
+  ret = INLINE_SYSCALL (rt_sigaction, 5, sig, act ? &kact : 0,
+			oact ? &koact : 0, stub, _NSIG / 8);
 
-    __asm__ __volatile__("t 0x10\n\t"
-			 "bcc 1f\n\t"
-			 " nop\n\t"
-			 "sub %%g0,%%o0,%%o0\n"
-			 "1:"
-			 : "=r"(r_sig)
-			 : "r"(r_syscallnr), "r"(r_act), "r"(r_oact),
-			   "0"(r_sig));
-
-    ret = r_sig;
-  }
-
-  if (ret >= 0)
+  if (oact && ret >= 0)
     {
-      if (oact)
-	{
-	  oact->sa_handler = k_osigact.k_sa_handler;
-	  oact->sa_mask.__val[0] = k_osigact.sa_mask;
-	  oact->sa_flags = k_osigact.sa_flags;
-	  oact->sa_restorer = NULL;
-	}
-      return ret;
+      oact->sa_handler = koact.k_sa_handler;
+      memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
+      oact->sa_flags = koact.sa_flags;
+      oact->sa_restorer = koact.sa_restorer;
     }
-
-  __set_errno (-ret);
-  return -1;
+  return ret;
 }
 libc_hidden_def (__libc_sigaction)