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Diffstat (limited to 'libc/sysdeps/linux/sparc/bits/atomicity.h')
-rw-r--r--libc/sysdeps/linux/sparc/bits/atomicity.h98
1 files changed, 0 insertions, 98 deletions
diff --git a/libc/sysdeps/linux/sparc/bits/atomicity.h b/libc/sysdeps/linux/sparc/bits/atomicity.h
deleted file mode 100644
index 22f5b3f50..000000000
--- a/libc/sysdeps/linux/sparc/bits/atomicity.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/* Low-level functions for atomic operations. Sparc32 version.
- Copyright (C) 1999 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 _ATOMICITY_H
-#define _ATOMICITY_H 1
-
-#include <inttypes.h>
-
-static int
-__attribute_used__
-exchange_and_add (volatile uint32_t *mem, int val)
-{
- static unsigned char lock;
- int result, tmp;
-
- __asm__ __volatile__("1: ldstub [%1], %0\n\t"
- " cmp %0, 0\n\t"
- " bne 1b\n\t"
- " nop"
- : "=&r" (tmp)
- : "r" (&lock)
- : "memory");
- result = *mem;
- *mem += val;
- __asm__ __volatile__("stb %%g0, [%0]"
- : /* no outputs */
- : "r" (&lock)
- : "memory");
- return result;
-}
-
-static void
-__attribute_used__
-atomic_add (volatile uint32_t *mem, int val)
-{
- static unsigned char lock;
- int tmp;
-
- __asm__ __volatile__("1: ldstub [%1], %0\n\t"
- " cmp %0, 0\n\t"
- " bne 1b\n\t"
- " nop"
- : "=&r" (tmp)
- : "r" (&lock)
- : "memory");
- *mem += val;
- __asm__ __volatile__("stb %%g0, [%0]"
- : /* no outputs */
- : "r" (&lock)
- : "memory");
-}
-
-static int
-__attribute_used__
-compare_and_swap (volatile long int *p, long int oldval, long int newval)
-{
- static unsigned char lock;
- int ret, tmp;
-
- __asm__ __volatile__("1: ldstub [%1], %0\n\t"
- " cmp %0, 0\n\t"
- " bne 1b\n\t"
- " nop"
- : "=&r" (tmp)
- : "r" (&lock)
- : "memory");
- if (*p != oldval)
- ret = 0;
- else
- {
- *p = newval;
- ret = 1;
- }
- __asm__ __volatile__("stb %%g0, [%0]"
- : /* no outputs */
- : "r" (&lock)
- : "memory");
-
- return ret;
-}
-
-#endif /* atomicity.h */