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, 118 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/mips/Makefile b/sysdeps/unix/sysv/linux/mips/Makefile
new file mode 100644
index 0000000000..9070b775c4
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/Makefile
@@ -0,0 +1,118 @@
+ifeq ($(subdir),signal)
+#sysdep_routines += sigsuspend
+endif
+
+ifeq ($(subdir),misc)
+sysdep_routines += cachectl cacheflush sysmips _test_and_set
+
+sysdep_headers += sys/cachectl.h sys/sysmips.h sys/tas.h
+endif
+
+abi-variants := o32_soft o32_hard o32_soft_2008 o32_hard_2008
+abi-variants += n32_soft n32_hard n32_soft_2008 n32_hard_2008
+abi-variants += n64_soft n64_hard n64_soft_2008 n64_hard_2008
+
+ifeq (,$(filter $(default-abi),$(abi-variants)))
+Unknown ABI, must be one of $(abi-variants)
+endif
+
+abi-includes := sgidefs.h
+
+# _MIPS_SIM_ABI32 == 1, _MIPS_SIM_NABI32 == 2, _MIPS_SIM_ABI64 == 3
+abi-o32_soft-options := -U_MIPS_SIM -D_MIPS_SIM=1 \
+			-D__mips_soft_float -U__mips_hard_float \
+			-U__mips_nan2008
+abi-o32_soft-condition := !defined(__mips_nan2008) \
+			  && defined(__mips_soft_float) \
+			  && (_MIPS_SIM == _MIPS_SIM_ABI32)
+abi-o32_soft-ld-soname := ld.so.1
+abi-o32_hard-options := -U_MIPS_SIM -D_MIPS_SIM=1 \
+			-D__mips_hard_float -U__mips_soft_float \
+			-U__mips_nan2008
+abi-o32_hard-condition := !defined(__mips_nan2008) \
+			  && defined(__mips_hard_float) \
+			  && (_MIPS_SIM == _MIPS_SIM_ABI32)
+abi-o32_hard-ld-soname := ld.so.1
+abi-o32_soft_2008-options := -U_MIPS_SIM -D_MIPS_SIM=1 \
+			     -D__mips_soft_float -U__mips_hard_float \
+			     -D__mips_nan2008
+abi-o32_soft_2008-condition := defined(__mips_nan2008) \
+			       && defined(__mips_soft_float) \
+			       && (_MIPS_SIM == _MIPS_SIM_ABI32)
+abi-o32_soft_2008-ld-soname := ld-linux-mipsn8.so.1
+abi-o32_hard_2008-options := -U_MIPS_SIM -D_MIPS_SIM=1 \
+			     -D__mips_hard_float -U__mips_soft_float \
+			     -D__mips_nan2008
+abi-o32_hard_2008-condition := defined(__mips_nan2008) \
+			       && defined(__mips_hard_float) \
+			       && (_MIPS_SIM == _MIPS_SIM_ABI32)
+abi-o32_hard_2008-ld-soname := ld-linux-mipsn8.so.1
+abi-n32_soft-options := -U_MIPS_SIM -D_MIPS_SIM=2 \
+			-D__mips_soft_float -U__mips_hard_float \
+			-U__mips_nan2008
+abi-n32_soft-condition := !defined(__mips_nan2008) \
+			  && defined(__mips_soft_float) \
+			  && (_MIPS_SIM == _MIPS_SIM_NABI32)
+abi-n32_soft-ld-soname := ld.so.1
+abi-n32_hard-options := -U_MIPS_SIM -D_MIPS_SIM=2 \
+			-D__mips_hard_float -U__mips_soft_float \
+			-U__mips_nan2008
+abi-n32_hard-condition := !defined(__mips_nan2008) \
+			  && defined(__mips_hard_float) \
+			  && (_MIPS_SIM == _MIPS_SIM_NABI32)
+abi-n32_hard-ld-soname := ld.so.1
+abi-n32_soft_2008-options := -U_MIPS_SIM -D_MIPS_SIM=2 \
+			     -D__mips_soft_float -U__mips_hard_float \
+			     -D__mips_nan2008
+abi-n32_soft_2008-condition := defined(__mips_nan2008) \
+			       && defined(__mips_soft_float) \
+			       && (_MIPS_SIM == _MIPS_SIM_NABI32)
+abi-n32_soft_2008-ld-soname := ld-linux-mipsn8.so.1
+abi-n32_hard_2008-options := -U_MIPS_SIM -D_MIPS_SIM=2 \
+			     -D__mips_hard_float -U__mips_soft_float \
+			     -D__mips_nan2008
+abi-n32_hard_2008-condition := defined(__mips_nan2008) \
+			       && defined(__mips_hard_float) \
+			       && (_MIPS_SIM == _MIPS_SIM_NABI32)
+abi-n32_hard_2008-ld-soname := ld-linux-mipsn8.so.1
+abi-n64_soft-options := -U_MIPS_SIM -D_MIPS_SIM=3 \
+			-D__mips_soft_float -U__mips_hard_float \
+			-U__mips_nan2008
+abi-n64_soft-condition := !defined(__mips_nan2008) \
+			  && defined(__mips_soft_float) \
+			  && (_MIPS_SIM == _MIPS_SIM_ABI64)
+abi-n64_soft-ld-soname := ld.so.1
+abi-n64_hard-options := -U_MIPS_SIM -D_MIPS_SIM=3 \
+			-D__mips_hard_float -U__mips_soft_float \
+			-U__mips_nan2008
+abi-n64_hard-condition := !defined(__mips_nan2008) \
+			  && defined(__mips_hard_float) \
+			  && (_MIPS_SIM == _MIPS_SIM_ABI64)
+abi-n64_hard-ld-soname := ld.so.1
+abi-n64_soft_2008-options := -U_MIPS_SIM -D_MIPS_SIM=3 \
+			     -D__mips_soft_float -U__mips_hard_float \
+			     -D__mips_nan2008
+abi-n64_soft_2008-condition := defined(__mips_nan2008) \
+			       && defined(__mips_soft_float) \
+			       && (_MIPS_SIM == _MIPS_SIM_ABI64)
+abi-n64_soft_2008-ld-soname := ld-linux-mipsn8.so.1
+abi-n64_hard_2008-options := -U_MIPS_SIM -D_MIPS_SIM=3 \
+			     -D__mips_hard_float -U__mips_soft_float \
+			     -D__mips_nan2008
+abi-n64_hard_2008-condition := defined(__mips_nan2008) \
+			       && defined(__mips_hard_float) \
+			       && (_MIPS_SIM == _MIPS_SIM_ABI64)
+abi-n64_hard_2008-ld-soname := ld-linux-mipsn8.so.1
+
+ifeq ($(subdir),elf)
+ifeq ($(build-shared),yes)
+# This is needed for DSO loading from static binaries.
+sysdep-dl-routines += dl-static
+sysdep_routines += dl-static
+sysdep-rtld-routines += dl-static
+endif
+endif
+
+ifeq ($(subdir),stdlib)
+gen-as-const-headers += ucontext_i.sym
+endif