sparc64: add basic support

No NPTL, no LDSO support.
Bootup with Busybox Ash in Qemu working.
Testuite shows only two failures, but mksh continue/break
support doesn't work.

1 files changed, 77 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sparc64/bits/sigaction.h b/libc/sysdeps/linux/sparc64/bits/sigaction.h
new file mode 100644
index 000000000..6c5b735be
--- /dev/null
+++ b/libc/sysdeps/linux/sparc64/bits/sigaction.h
@@ -0,0 +1,77 @@
+/* The proper definitions for Linux/SPARC sigaction.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef _SIGNAL_H
+# error "Never include <bits/sigaction.h> directly; use <signal.h> instead."
+#endif
+
+/* Structure describing the action to be taken when a signal arrives.  */
+struct sigaction
+  {
+    /* Signal handler. */
+#ifdef __USE_POSIX199309
+    union
+      {
+	/* Used if SA_SIGINFO is not set.  */
+	__sighandler_t sa_handler;
+	/* Used if SA_SIGINFO is set.  */
+	void (*sa_sigaction) (int, siginfo_t *, void *);
+      }
+    __sigaction_handler;
+# define sa_handler	__sigaction_handler.sa_handler
+# define sa_sigaction	__sigaction_handler.sa_sigaction
+#else
+    __sighandler_t sa_handler;
+#endif
+
+    /* Additional set of signals to be blocked.  */
+    __sigset_t sa_mask;
+
+    /* Special flags.  */
+    int __glibc_reserved0;
+    int sa_flags;
+
+    /* Not used by Linux/Sparc yet.  */
+    void (*sa_restorer) (void);
+  };
+
+
+/* Bits in `sa_flags'.  */
+#define	SA_NOCLDSTOP 0x00000008  /* Don't send SIGCHLD when children stop.  */
+#define SA_NOCLDWAIT 0x00000100  /* Don't create zombie on child death.  */
+#define SA_SIGINFO   0x00000200  /* Invoke signal-catching function with
+				    three arguments instead of one.  */
+#if defined __USE_UNIX98 || defined __USE_MISC
+# define SA_ONSTACK   0x00000001 /* Use signal stack by using `sa_restorer'. */
+#endif
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
+# define SA_RESTART   0x00000002 /* Restart syscall on signal return.  */
+# define SA_INTERRUPT 0x00000010 /* Historical no-op.  */
+# define SA_NOMASK    0x00000020 /* Don't automatically block the signal when
+				    its handler is being executed.  */
+# define SA_ONESHOT   0x00000004 /* Reset to SIG_DFL on entry to handler.  */
+
+/* Some aliases for the SA_ constants.  */
+# define SA_NODEFER   SA_NOMASK
+# define SA_RESETHAND SA_ONESHOT
+# define SA_STACK     SA_ONSTACK
+#endif
+
+/* Values for the HOW argument to `sigprocmask'.  */
+#define	SIG_BLOCK     1		 /* Block signals.  */
+#define	SIG_UNBLOCK   2		 /* Unblock signals.  */
+#define	SIG_SETMASK   4		 /* Set the set of blocked signals.  */