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.

8 files changed, 403 insertions, 0 deletions

diff --git a/sysdeps/unix/mips/entry.h b/sysdeps/unix/mips/entry.h
new file mode 100644
index 0000000000..04d05d2b0a
--- /dev/null
+++ b/sysdeps/unix/mips/entry.h
@@ -0,0 +1,5 @@
+#ifndef __ASSEMBLY__
+extern void __start (void);
+#endif
+
+#define ENTRY_POINT __start
diff --git a/sysdeps/unix/mips/mips32/sysdep.h b/sysdeps/unix/mips/mips32/sysdep.h
new file mode 100644
index 0000000000..1a2431c8ee
--- /dev/null
+++ b/sysdeps/unix/mips/mips32/sysdep.h
@@ -0,0 +1,56 @@
+/* Copyright (C) 1992-2014 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 <sysdeps/unix/mips/sysdep.h>
+
+/* Note that while it's better structurally, going back to call __syscall_error
+   can make things confusing if you're debugging---it looks like it's jumping
+   backwards into the previous fn.  */
+#ifdef __PIC__
+#define PSEUDO(name, syscall_name, args) \
+  .align 2;								      \
+  .set nomips16;							      \
+  cfi_startproc;							      \
+  99: la t9,__syscall_error;						      \
+  jr t9;								      \
+  cfi_endproc;								      \
+  ENTRY(name)								      \
+  .set noreorder;							      \
+  .cpload t9;								      \
+  li v0, SYS_ify(syscall_name);						      \
+  syscall;								      \
+  .set reorder;								      \
+  bne a3, zero, 99b;							      \
+L(syse1):
+#else
+#define PSEUDO(name, syscall_name, args) \
+  .set noreorder;							      \
+  .set nomips16;							      \
+  .align 2;								      \
+  cfi_startproc;							      \
+  99: j __syscall_error;						      \
+  nop;									      \
+  cfi_endproc;								      \
+  ENTRY(name)								      \
+  .set noreorder;							      \
+  li v0, SYS_ify(syscall_name);						      \
+  syscall;								      \
+  .set reorder;								      \
+  bne a3, zero, 99b;							      \
+L(syse1):
+#endif
diff --git a/sysdeps/unix/mips/mips64/n32/sysdep.h b/sysdeps/unix/mips/mips64/n32/sysdep.h
new file mode 100644
index 0000000000..a8700271dc
--- /dev/null
+++ b/sysdeps/unix/mips/mips64/n32/sysdep.h
@@ -0,0 +1,64 @@
+/* Copyright (C) 1992-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Alexandre Oliva <aoliva@redhat.com>.
+
+   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 <sysdeps/unix/mips/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+/* Note that while it's better structurally, going back to call __syscall_error
+   can make things confusing if you're debugging---it looks like it's jumping
+   backwards into the previous fn.  */
+#ifdef __PIC__
+#define PSEUDO(name, syscall_name, args) \
+  .align 2;								      \
+  .set nomips16;							      \
+  cfi_startproc;							      \
+  99:;									      \
+  .set noat;								      \
+  .cpsetup t9, $1, name;						      \
+  cfi_register (gp, $1);						      \
+  .set at;								      \
+  la t9,__syscall_error;						      \
+  .cpreturn;								      \
+  cfi_restore (gp);							      \
+  jr t9;								      \
+  cfi_endproc;								      \
+  ENTRY(name)								      \
+  li v0, SYS_ify(syscall_name);						      \
+  syscall;								      \
+  bne a3, zero, 99b;							      \
+L(syse1):
+#else
+#define PSEUDO(name, syscall_name, args) \
+  .set noreorder;							      \
+  .align 2;								      \
+  .set nomips16;							      \
+  cfi_startproc;							      \
+  99: j __syscall_error;						      \
+  nop;                                                                        \
+  cfi_endproc;								      \
+  ENTRY(name)								      \
+  .set noreorder;							      \
+  li v0, SYS_ify(syscall_name);						      \
+  syscall;								      \
+  .set reorder;								      \
+  bne a3, zero, 99b;							      \
+L(syse1):
+#endif
+
+#endif
diff --git a/sysdeps/unix/mips/mips64/n64/sysdep.h b/sysdeps/unix/mips/mips64/n64/sysdep.h
new file mode 100644
index 0000000000..ac00289140
--- /dev/null
+++ b/sysdeps/unix/mips/mips64/n64/sysdep.h
@@ -0,0 +1,64 @@
+/* Copyright (C) 1992-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Alexandre Oliva <aoliva@redhat.com>.
+
+   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 <sysdeps/unix/mips/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+/* Note that while it's better structurally, going back to call __syscall_error
+   can make things confusing if you're debugging---it looks like it's jumping
+   backwards into the previous fn.  */
+#ifdef __PIC__
+#define PSEUDO(name, syscall_name, args) \
+  .align 2;								      \
+  .set nomips16;							      \
+  cfi_startproc;							      \
+  99:;									      \
+  .set noat;								      \
+  .cpsetup t9, $1, name;						      \
+  cfi_register (gp, $1);						      \
+  .set at;								      \
+  dla t9,__syscall_error;						      \
+  .cpreturn;								      \
+  cfi_restore (gp);							      \
+  jr t9;								      \
+  cfi_endproc;								      \
+  ENTRY(name)								      \
+  li v0, SYS_ify(syscall_name);						      \
+  syscall;								      \
+  bne a3, zero, 99b;							      \
+L(syse1):
+#else
+#define PSEUDO(name, syscall_name, args) \
+  .set noreorder;							      \
+  .align 2;								      \
+  .set nomips16;							      \
+  cfi_startproc;							      \
+  99: j __syscall_error;						      \
+  nop;                                                                        \
+  cfi_endproc;								      \
+  ENTRY(name)								      \
+  .set noreorder;							      \
+  li v0, SYS_ify(syscall_name);						      \
+  syscall;								      \
+  .set reorder;								      \
+  bne a3, zero, 99b;							      \
+L(syse1):
+#endif
+
+#endif
diff --git a/sysdeps/unix/mips/pipe.S b/sysdeps/unix/mips/pipe.S
new file mode 100644
index 0000000000..bed2f75e93
--- /dev/null
+++ b/sysdeps/unix/mips/pipe.S
@@ -0,0 +1,32 @@
+/* Copyright (C) 1992-2014 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 <sysdep.h>
+
+SYSCALL__ (pipe, 1)
+	/* Plop in the two descriptors.  */
+	sw v0, 0(a0)
+	sw v1, 4(a0)
+
+	/* Go out with a clean status.  */
+	move v0, zero
+	j ra
+PSEUDO_END(__pipe)
+
+libc_hidden_def (__pipe)
+weak_alias (__pipe, pipe)
diff --git a/sysdeps/unix/mips/rt-sysdep.S b/sysdeps/unix/mips/rt-sysdep.S
new file mode 100644
index 0000000000..f966bf1e59
--- /dev/null
+++ b/sysdeps/unix/mips/rt-sysdep.S
@@ -0,0 +1 @@
+#include <sysdep.S>
diff --git a/sysdeps/unix/mips/sysdep.S b/sysdeps/unix/mips/sysdep.S
new file mode 100644
index 0000000000..4a01c5f63f
--- /dev/null
+++ b/sysdeps/unix/mips/sysdep.S
@@ -0,0 +1,100 @@
+/* Copyright (C) 1992-2014 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 <sysdep.h>
+#define _ERRNO_H
+#include <bits/errno.h>
+#include <sys/asm.h>
+
+	.set	nomips16
+
+#ifdef _LIBC_REENTRANT
+
+LOCALSZ= 3
+FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK
+RAOFF= FRAMESZ-(1*SZREG)
+GPOFF= FRAMESZ-(2*SZREG)
+V0OFF= FRAMESZ-(3*SZREG)
+
+ENTRY(__syscall_error)
+#ifdef __PIC__
+	.set noat
+	SETUP_GPX (AT)
+	.set at
+#endif
+	PTR_SUBU sp, FRAMESZ
+	.set noat
+	SETUP_GPX64(GPOFF,AT)
+	.set at
+#ifdef __PIC__
+	SAVE_GP(GPOFF)
+#endif
+	REG_S	v0, V0OFF(sp)
+	REG_S	ra, RAOFF(sp)
+
+#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
+	/* We translate the system's EWOULDBLOCK error into EAGAIN.
+	   The GNU C library always defines EWOULDBLOCK==EAGAIN.
+	   EWOULDBLOCK_sys is the original number.  */
+	bne	v0, EWOULDBLOCK_sys, L(skip)
+	nop
+	li	v0, EAGAIN
+L(skip):
+#endif
+	/* Find our per-thread errno address  */
+	jal	__errno_location
+
+	/* Store the error value.  */
+	REG_L	t0, V0OFF(sp)
+	sw	t0, 0(v0)
+
+	/* And just kick back a -1.  */
+	REG_L	ra, RAOFF(sp)
+	RESTORE_GP64
+	PTR_ADDU sp, FRAMESZ
+	li	v0, -1
+	j	ra
+	END(__syscall_error)
+
+#else /* _LIBC_REENTRANT */
+
+
+ENTRY(__syscall_error)
+#ifdef __PIC__
+	SETUP_GPX (AT)
+#endif
+	SETUP_GPX64 (t9, AT)
+
+#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
+	/* We translate the system's EWOULDBLOCK error into EAGAIN.
+	   The GNU C library always defines EWOULDBLOCK==EAGAIN.
+	   EWOULDBLOCK_sys is the original number.  */
+	bne v0, EWOULDBLOCK_sys, L(skip)
+	li v0, EAGAIN
+L(skip):
+#endif
+	/* Store it in errno... */
+	sw v0, errno
+
+	/* And just kick back a -1.  */
+	li v0, -1
+
+	RESTORE_GP64
+	j ra
+	END(__syscall_error)
+#endif  /* _LIBC_REENTRANT  */
diff --git a/sysdeps/unix/mips/sysdep.h b/sysdeps/unix/mips/sysdep.h
new file mode 100644
index 0000000000..d59fac0e8d
--- /dev/null
+++ b/sysdeps/unix/mips/sysdep.h
@@ -0,0 +1,81 @@
+/* Copyright (C) 1992-2014 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 <sgidefs.h>
+#include <sysdeps/unix/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+#include <regdef.h>
+
+#define ENTRY(name) \
+  .globl name;								      \
+  .align 2;								      \
+  .ent name,0;								      \
+  name##:								      \
+  cfi_startproc;
+
+#undef END
+#define	END(function)                                   \
+		cfi_endproc;				\
+		.end	function;		        \
+		.size	function,.-function
+
+#define ret	j ra ; nop
+
+#undef PSEUDO_END
+#define PSEUDO_END(sym) cfi_endproc; .end sym; .size sym,.-sym
+
+#define PSEUDO_NOERRNO(name, syscall_name, args)	\
+  .align 2;						\
+  ENTRY(name)						\
+  .set nomips16;					\
+  .set noreorder;					\
+  li v0, SYS_ify(syscall_name);				\
+  syscall
+
+#undef PSEUDO_END_NOERRNO
+#define PSEUDO_END_NOERRNO(sym) cfi_endproc; .end sym; .size sym,.-sym
+
+#define ret_NOERRNO ret
+
+#define PSEUDO_ERRVAL(name, syscall_name, args)	\
+  .align 2;						\
+  ENTRY(name)						\
+  .set nomips16;					\
+  .set noreorder;					\
+  li v0, SYS_ify(syscall_name);				\
+  syscall
+
+#undef PSEUDO_END_ERRVAL
+#define PSEUDO_END_ERRVAL(sym) cfi_endproc; .end sym; .size sym,.-sym
+
+#define ret_ERRVAL ret
+
+#define r0	v0
+#define r1	v1
+/* The mips move insn is d,s.  */
+#define MOVE(x,y)	move y , x
+
+#if _MIPS_SIM == _ABIO32
+# define L(label) $L ## label
+#else
+# define L(label) .L ## label
+#endif
+
+#endif