[MicroBlaze]: Move MicroBlaze from ports to sysdeps.

2014-02-17  David Holsgrove <david.holsgrove@xilinx.com>

        * sysdeps/microblaze: Move directory from ports/sysdeps/microblaze.
        * sysdeps/unix/sysv/linux/microblaze: Move directory from
          ports/sysdeps/unix/sysv/linux/microblaze.
        * README: Add missing listing for microblaze*-*-linux-gnu.

Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>

1 files changed, 88 insertions, 0 deletions

diff --git a/sysdeps/microblaze/crti.S b/sysdeps/microblaze/crti.S
new file mode 100644
index 0000000000..9a642027bf
--- /dev/null
+++ b/sysdeps/microblaze/crti.S
@@ -0,0 +1,88 @@
+/* Special .init and .fini section support for MicroBlaze.
+   Copyright (C) 2012-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file with other
+   programs, and to distribute those programs without any restriction
+   coming from the use of this file. (The GNU Lesser General Public
+   License restrictions do apply in other respects; for example, they
+   cover modification of the file, and distribution when not linked
+   into another program.)
+
+   Note that people who make modified versions of this file are not
+   obligated to grant this special exception for their modified
+   versions; it is their choice whether to do so. The GNU Lesser
+   General Public License gives permission to release a modified
+   version without this exception; this exception also makes it
+   possible to release a modified version which carries forward this
+   exception.
+
+   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/>.  */
+
+/* crti.S puts a function prologue at the beginning of the .init and
+   .fini sections and defines global symbols for those addresses, so
+   they can be called as functions.  The symbols _init and _fini are
+   magic and cause the linker to emit DT_INIT and DT_FINI.  */
+
+#include <libc-symbols.h>
+#include <sysdep.h>
+
+#ifndef PREINIT_FUNCTION
+# define PREINIT_FUNCTION __gmon_start__
+#endif
+
+#ifndef PREINIT_FUNCTION_WEAK
+# define PREINIT_FUNCTION_WEAK 1
+#endif
+
+#if PREINIT_FUNCTION_WEAK
+	weak_extern (PREINIT_FUNCTION)
+#else
+	.hidden PREINIT_FUNCTION
+#endif
+
+	.section .init,"ax",@progbits
+	.align	2
+	.globl	_init
+	.type	_init, @function
+_init:
+	addik	r1,r1,-32
+	swi	r20,r1,28
+	mfs	r20,rpc
+	addik	r20,r20,_GLOBAL_OFFSET_TABLE_+8
+	lwi	r3,r20,PREINIT_FUNCTION@GOT
+#if PREINIT_FUNCTION_WEAK
+	beqid   r3,$Lno_weak_fn:
+	swi     r15,r1,0
+	brlid	r15,PREINIT_FUNCTION@PLT
+$Lno_weak_fn:
+#else
+	swi     r15,r1,0
+	brald	r15,r3
+#endif
+	nop		# Unfilled delay slot
+
+	.section .fini,"ax",@progbits
+	.align	2
+	.globl	_fini
+	.type	_fini, @function
+_fini:
+	addik	r1,r1,-32
+	swi	r20,r1,28
+	swi	r15,r1,0
+	mfs	r20,rpc
+	addik	r20,r20,_GLOBAL_OFFSET_TABLE_+8