Move mips from ports to libc.

I've moved the MIPS port from ports to the main sysdeps hierarchy.
Beyond the README update, the move of the files was simply

git mv ports/sysdeps/mips sysdeps/mips
git mv ports/sysdeps/unix/mips sysdeps/unix/mips
git mv ports/sysdeps/unix/sysv/linux/mips sysdeps/unix/sysv/linux/mips

and in addition to the ChangeLog entries here, I put a note at the top
of ports/ChangeLog.mips similar to those in other files.

Tested that disassembly of installed shared libraries for mips is the
same before and after this patch (except for ld.so where paths in
assertions are involved, as for arm).

	* sysdeps/mips: Move directory from ports/sysdeps/mips.
	* sysdeps/unix/mips: Move directory from ports/sysdeps/unix/mips.
	* sysdeps/unix/sysv/linux/mips: Move directory from
	ports/sysdeps/unix/sysv/linux/mips.
	* README: Update listing for mips-*-linux-gnu and
	mips64-*-linux-gnu.

	* sysdeps/mips: Move directory to ../sysdeps/mips.
	* sysdeps/unix/mips: Move directory to ../sysdeps/unix/mips.
	* sysdeps/unix/sysv/linux/mips: Move directory to
	../sysdeps/unix/sysv/linux/mips.

1 files changed, 93 insertions, 0 deletions

diff --git a/sysdeps/mips/mips64/n64/crti.S b/sysdeps/mips/mips64/n64/crti.S
new file mode 100644
index 0000000000..5f56ad14fa
--- /dev/null
+++ b/sysdeps/mips/mips64/n64/crti.S
@@ -0,0 +1,93 @@
+/* Special .init and .fini section support for MIPS (n64).
+   Copyright (C) 1995-2014 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>
+
+#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
+
+	.set nomips16
+
+	.section .init,"ax",@progbits
+	.p2align 2
+	.globl _init
+	.type _init, @function
+_init:
+	daddiu $sp,$sp,-16
+	sd $28,0($sp)
+	lui $28,%hi(%neg(%gp_rel(_init)))
+	daddu $28,$28,$25
+	sd $31,8($sp)
+	daddiu $28,$28,%lo(%neg(%gp_rel(_init)))
+#if PREINIT_FUNCTION_WEAK
+	ld $2,%got_disp(PREINIT_FUNCTION)($28)
+	beq $2,$0,.Lno_weak_fn
+	ld $25,%call16(PREINIT_FUNCTION)($28)
+	.reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION
+1:	jalr $25
+.Lno_weak_fn:
+#else
+	ld $25,%got_disp(PREINIT_FUNCTION)($28)
+	.reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION
+1:	jalr $25
+#endif
+
+	.section .fini,"ax",@progbits
+	.p2align 2
+	.globl _fini
+	.type _fini, @function
+_fini:
+	daddiu $sp,$sp,-16
+	sd $28,0($sp)
+	lui $28,%hi(%neg(%gp_rel(_fini)))
+	daddu $28,$28,$25
+	sd $31,8($sp)
+	daddiu $28,$28,%lo(%neg(%gp_rel(_fini)))