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, 63 insertions, 0 deletions

diff --git a/sysdeps/mips/setjmp_aux.c b/sysdeps/mips/setjmp_aux.c
new file mode 100644
index 0000000000..0a84d3d328
--- /dev/null
+++ b/sysdeps/mips/setjmp_aux.c
@@ -0,0 +1,63 @@
+/* Copyright (C) 1996-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Brendan Kehoe (brendan@zen.org).
+
+   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/>.  */
+
+#include <setjmp.h>
+
+/* This function is only called via the assembly language routine
+   __sigsetjmp, which arranges to pass in the stack pointer and the frame
+   pointer.  We do things this way because it's difficult to reliably
+   access them in C.  */
+
+int __attribute__ ((nomips16))
+__sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
+{
+#ifdef __mips_hard_float
+  /* Store the floating point callee-saved registers...  */
+  asm volatile ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
+  asm volatile ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1]));
+  asm volatile ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2]));
+  asm volatile ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3]));
+  asm volatile ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4]));
+  asm volatile ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5]));
+#endif
+
+  /* .. and the PC;  */
+  asm volatile ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc));
+
+  /* .. and the stack pointer;  */
+  env[0].__jmpbuf[0].__sp = (void *) sp;
+
+  /* .. and the FP; it'll be in s8. */
+  env[0].__jmpbuf[0].__fp = (void *) fp;
+
+  /* .. and the GP; */
+  asm volatile ("sw $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp));
+
+  /* .. and the callee-saved registers; */
+  asm volatile ("sw $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0]));
+  asm volatile ("sw $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1]));
+  asm volatile ("sw $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2]));
+  asm volatile ("sw $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3]));
+  asm volatile ("sw $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4]));
+  asm volatile ("sw $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5]));
+  asm volatile ("sw $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6]));
+  asm volatile ("sw $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7]));
+
+  /* Save the signal mask if requested.  */
+  return __sigjmp_save (env, savemask);
+}