/usr/include/atomic_ops/sysdeps/hpc/ia64.h is in libatomic-ops-dev 7.2~alpha5+cvs20101124-1ubuntu1.
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* Copyright (c) 2003 Hewlett-Packard Development Company, L.P.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* This file specifies Itanimum primitives for use with the HP compiler
* under HP/UX. We use intrinsics instead of the inline assembly code in the
* gcc file.
*/
#include "../all_atomic_load_store.h"
#include "../all_acquire_release_volatile.h"
#include "../test_and_set_t_is_char.h"
#include <machine/sys/inline.h>
#ifdef __LP64__
# define AO_T_FASIZE _FASZ_D
# define AO_T_SIZE _SZ_D
#else
# define AO_T_FASIZE _FASZ_W
# define AO_T_SIZE _SZ_W
#endif
AO_INLINE void
AO_nop_full(void)
{
_Asm_mf();
}
#define AO_HAVE_nop_full
AO_INLINE AO_t
AO_fetch_and_add1_acquire (volatile AO_t *p)
{
return _Asm_fetchadd(AO_T_FASIZE, _SEM_ACQ, p, 1,
_LDHINT_NONE, _DOWN_MEM_FENCE);
}
#define AO_HAVE_fetch_and_add1_acquire
AO_INLINE AO_t
AO_fetch_and_add1_release (volatile AO_t *p)
{
return _Asm_fetchadd(AO_T_FASIZE, _SEM_REL, p, 1,
_LDHINT_NONE, _UP_MEM_FENCE);
}
#define AO_HAVE_fetch_and_add1_release
AO_INLINE AO_t
AO_fetch_and_sub1_acquire (volatile AO_t *p)
{
return _Asm_fetchadd(AO_T_FASIZE, _SEM_ACQ, p, -1,
_LDHINT_NONE, _DOWN_MEM_FENCE);
}
#define AO_HAVE_fetch_and_sub1_acquire
AO_INLINE AO_t
AO_fetch_and_sub1_release (volatile AO_t *p)
{
return _Asm_fetchadd(AO_T_FASIZE, _SEM_REL, p, -1,
_LDHINT_NONE, _UP_MEM_FENCE);
}
#define AO_HAVE_fetch_and_sub1_release
AO_INLINE int
AO_compare_and_swap_acquire(volatile AO_t *addr,
AO_t old, AO_t new_val)
{
AO_t oldval;
_Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
oldval = _Asm_cmpxchg(AO_T_SIZE, _SEM_ACQ, addr,
new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
return (oldval == old);
}
#define AO_HAVE_compare_and_swap_acquire
AO_INLINE int
AO_compare_and_swap_release(volatile AO_t *addr,
AO_t old, AO_t new_val)
{
AO_t oldval;
_Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
oldval = _Asm_cmpxchg(AO_T_SIZE, _SEM_REL, addr,
new_val, _LDHINT_NONE, _UP_MEM_FENCE);
/* Hopefully the compiler knows not to reorder the above two? */
return (oldval == old);
}
#define AO_HAVE_compare_and_swap_release
AO_INLINE int
AO_char_compare_and_swap_acquire(volatile unsigned char *addr,
unsigned char old, unsigned char new_val)
{
unsigned char oldval;
_Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
oldval = _Asm_cmpxchg(_SZ_B, _SEM_ACQ, addr,
new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
return (oldval == old);
}
#define AO_HAVE_char_compare_and_swap_acquire
AO_INLINE int
AO_char_compare_and_swap_release(volatile unsigned char *addr,
unsigned char old, unsigned char new_val)
{
unsigned char oldval;
_Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
oldval = _Asm_cmpxchg(_SZ_B, _SEM_REL, addr,
new_val, _LDHINT_NONE, _UP_MEM_FENCE);
/* Hopefully the compiler knows not to reorder the above two? */
return (oldval == old);
}
#define AO_HAVE_char_compare_and_swap_release
AO_INLINE int
AO_short_compare_and_swap_acquire(volatile unsigned short *addr,
unsigned short old, unsigned short new_val)
{
unsigned short oldval;
_Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
oldval = _Asm_cmpxchg(_SZ_B, _SEM_ACQ, addr,
new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
return (oldval == old);
}
#define AO_HAVE_short_compare_and_swap_acquire
AO_INLINE int
AO_short_compare_and_swap_release(volatile unsigned short *addr,
unsigned short old, unsigned short new_val)
{
unsigned short oldval;
_Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
oldval = _Asm_cmpxchg(_SZ_B, _SEM_REL, addr,
new_val, _LDHINT_NONE, _UP_MEM_FENCE);
/* Hopefully the compiler knows not to reorder the above two? */
return (oldval == old);
}
#define AO_HAVE_short_compare_and_swap_release
#ifndef __LP64__
# include "../ao_t_is_int.h"
#endif
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