2005-01-27 Hans-Peter Nilsson <hp@axis.com>

* configure.in: Support cris-*-* and crisv32-*-*.
        * libnosys/configure.in: Ditto.
        * configure, libnosys/configure: Regenerate.
        * cris: New directory.
        * cris/crt0.S, cris/crtn.c, cris/gensyscalls, cris/linunistd.h,
        cris/outbyte.c, cris/configure.in, cris/crti.c, cris/lcrt0.c,
        cris/Makefile.in, cris/setup.S, cris/configure: New files.

libgloss/cris/lcrt0.c

@@ -0,0 +1,128 @@
+/* Support for cris*-axis-linux-gnu and src/sim/cris simulator.
+   Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Axis Communications.
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+   2. Neither the name of Axis Communications nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY AXIS COMMUNICATIONS AND ITS CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AXIS
+   COMMUNICATIONS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+   (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+   SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+   IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+   POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "linunistd.h"
+
+extern void exit (int) __attribute ((__noreturn__));
+
+__asm__ (".syntax no_register_prefix");
+
+#ifdef __ELF__
+/* This simulator magic for an earlier simulator was supposed to be
+   found two bytes before _start.  Let's keep it for sake of
+   compatibility.  Trying to emit them with an ordinary const char[]
+   and attribute section makes gcc barf; it doesn't like having the
+   same section attribute for both code and data.
+   The code is supposed to cause a crash if someone jumps to 0.  */
+__asm__
+ (
+  " .section .startup,\"ax\",@progbits\n"
+  " .byte 55,55\n"
+  " move.d 0xbadacce5,r9\n"
+  " clear.d [r9]\n"
+  " setf\n"
+  " setf\n"
+  " .previous");
+#endif
+
+__asm__
+ (
+#ifdef __AOUT__
+  " .text\n\t"
+#elif defined (__ELF__)
+  " .section .startup,\"ax\",@progbits\n"
+#endif
+  " .global __start\n"
+  "__start:\n"
+  /* SP must be set up by the simulator or the system.  */
+
+  /* Find ARGC, ARGV and ENV.  */
+  /* ARGC.  */
+  " move.d [sp],r10\n"
+
+  /* ARGV.  */
+  " move.d sp,r11\n"
+  " addq 4,r11\n"
+
+  /* ENVP.  */
+  " move.d sp,r12\n"
+  " addi r10.d,r12\n"
+  " addq 8,r12\n"
+
+  /* Terminate R9 and R6; we don't have a "console_print_etrax" or system
+     call function.  */
+  " clear.d r9\n"
+  " clear.d r6\n"
+  " move.d __start1,r13\n"
+  " jump r13\n"
+  " setf\n"
+#ifndef __AOUT__
+  /* We rely on a.out not being in .data here.  Quite fragile, but
+     covered by e.g. running the GCC test-suite for cris-unknown-aout. */
+  " .previous"
+#endif
+  );
+
+extern void _Libctors (void);
+extern void _Libdtors (void);
+
+extern void __init__start (void) __attribute ((weak));
+extern void __aout__ctors (void) __attribute ((weak));
+
+static void start1 () __asm__ ("__start1") __attribute ((__used__));
+static void
+start1 (int argc, char **argv, char **env)
+{
+#ifdef __ELF__
+  /* For ELF systems, we call _init and register _fini with atexit.  */
+  {
+    extern void _init (void);
+    extern void _fini (void);
+    _init ();
+    if (atexit (_fini) != 0)
+      exit (-1);
+  }
+#else
+  /* Constructors which may get here through the ELF .init section, when
+     linking ELF and producing a.out.  */
+  if (__init__start)
+    __init__start ();
+
+  if (__aout__ctors)
+    __aout__ctors ();
+
+  /* Call constructors in shared libraries. */
+  _Libctors ();
+
+  if (atexit (_Libdtors) != 0)
+    exit (-1);
+#endif
+
+  /* Call the user program.  */
+  exit (main (argc, argv, env));
+}