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diff --git a/sysdeps/mips/atomicity.h b/sysdeps/mips/atomicity.h
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+/* Low-level functions for atomic operations. Mips version.
+ Copyright (C) 2001, 2002, 2003, 2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _MIPS_ATOMICITY_H
+#define _MIPS_ATOMICITY_H 1
+
+#include <inttypes.h>
+#include <sgidefs.h>
+
+static inline int
+__attribute__ ((unused))
+exchange_and_add (volatile uint32_t *mem, int val)
+{
+ int result, tmp;
+
+ __asm__ __volatile__
+ ("/* Inline exchange & add */\n"
+ "1:\n\t"
+ ".set push\n\t"
+#if _MIPS_SIM == _ABIO32
+ ".set mips2\n\t"
+#endif
+ "ll %0,%3\n\t"
+ "addu %1,%4,%0\n\t"
+ "sc %1,%2\n\t"
+ ".set pop\n\t"
+ "beqz %1,1b\n\t"
+ "/* End exchange & add */"
+ : "=&r"(result), "=&r"(tmp), "=m"(*mem)
+ : "m" (*mem), "r"(val)
+ : "memory");
+
+ return result;
+}
+
+static inline void
+__attribute__ ((unused))
+atomic_add (volatile uint32_t *mem, int val)
+{
+ int result;
+
+ __asm__ __volatile__
+ ("/* Inline atomic add */\n"
+ "1:\n\t"
+ ".set push\n\t"
+#if _MIPS_SIM == _ABIO32
+ ".set mips2\n\t"
+#endif
+ "ll %0,%2\n\t"
+ "addu %0,%3,%0\n\t"
+ "sc %0,%1\n\t"
+ ".set pop\n\t"
+ "beqz %0,1b\n\t"
+ "/* End atomic add */"
+ : "=&r"(result), "=m"(*mem)
+ : "m" (*mem), "r"(val)
+ : "memory");
+}
+
+static inline int
+__attribute__ ((unused))
+compare_and_swap (volatile long int *p, long int oldval, long int newval)
+{
+ long int ret, temp;
+
+ __asm__ __volatile__
+ ("/* Inline compare & swap */\n"
+ "1:\n\t"
+ ".set push\n\t"
+#if _MIPS_SIM == _ABIO32
+ ".set mips2\n\t"
+#endif
+#if _MIPS_SIM == _ABI64
+ "lld %1,%5\n\t"
+#else
+ "ll %1,%5\n\t"
+#endif
+ "move %0,$0\n\t"
+ "bne %1,%3,2f\n\t"
+ "move %0,%4\n\t"
+#if _MIPS_SIM == _ABI64
+ "scd %0,%2\n\t"
+#else
+ "sc %0,%2\n\t"
+#endif
+ ".set pop\n\t"
+ "beqz %0,1b\n"
+ "2:\n\t"
+ "/* End compare & swap */"
+ : "=&r" (ret), "=&r" (temp), "=m" (*p)
+ : "r" (oldval), "r" (newval), "m" (*p)
+ : "memory");
+
+ return ret;
+}
+
+#endif /* atomicity.h */