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, 82 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/mips/bits/sigcontext.h b/sysdeps/unix/sysv/linux/mips/bits/sigcontext.h
new file mode 100644
index 0000000000..f0ab7dc0da
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/bits/sigcontext.h
@@ -0,0 +1,82 @@
+/* Copyright (C) 1996-2014 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.
+
+   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 _BITS_SIGCONTEXT_H
+#define _BITS_SIGCONTEXT_H 1
+
+#if !defined _SIGNAL_H && !defined _SYS_UCONTEXT_H
+# error "Never use <bits/sigcontext.h> directly; include <signal.h> instead."
+#endif
+
+#include <sgidefs.h>
+
+#if _MIPS_SIM == _ABIO32
+
+/* Certain unused fields were replaced with new ones in 2.6.12-rc4.
+   The changes were as follows:
+
+   sc_cause -> sc_hi1
+   sc_badvaddr -> sc_lo1
+   sc_sigset[0] -> sc_hi2
+   sc_sigset[1] -> sc_lo2
+   sc_sigset[2] -> sc_hi3
+   sc_sigset[3] -> sc_lo3
+
+   sc_regmask, sc_ownedfp and sc_fpc_eir are not used.  */
+struct sigcontext {
+  unsigned int sc_regmask;
+  unsigned int sc_status;
+  __extension__ unsigned long long sc_pc;
+  __extension__ unsigned long long sc_regs[32];
+  __extension__ unsigned long long sc_fpregs[32];
+  unsigned int sc_ownedfp;
+  unsigned int sc_fpc_csr;
+  unsigned int sc_fpc_eir;
+  unsigned int sc_used_math;
+  unsigned int sc_dsp;
+  __extension__ unsigned long long sc_mdhi;
+  __extension__ unsigned long long sc_mdlo;
+  unsigned long sc_hi1;
+  unsigned long sc_lo1;
+  unsigned long sc_hi2;
+  unsigned long sc_lo2;
+  unsigned long sc_hi3;
+  unsigned long sc_lo3;
+};
+
+#else
+
+/* This structure changed in 2.6.12-rc4 when DSP support was added.  */
+struct sigcontext {
+  __extension__ unsigned long long sc_regs[32];
+  __extension__ unsigned long long sc_fpregs[32];
+  __extension__ unsigned long long sc_mdhi;
+  __extension__ unsigned long long sc_hi1;
+  __extension__ unsigned long long sc_hi2;
+  __extension__ unsigned long long sc_hi3;
+  __extension__ unsigned long long sc_mdlo;
+  __extension__ unsigned long long sc_lo1;
+  __extension__ unsigned long long sc_lo2;
+  __extension__ unsigned long long sc_lo3;
+  __extension__ unsigned long long sc_pc;
+  unsigned int sc_fpc_csr;
+  unsigned int sc_used_math;
+  unsigned int sc_dsp;
+  unsigned int sc_reserved;
+};
+
+#endif /* _MIPS_SIM != _ABIO32 */
+#endif