2 * Copyright (c) 2003 Hewlett-Packard Development Company, L.P.
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * This file specifies Itanimum primitives for use with the HP compiler
25 * under HP/UX. We use intrinsics instead of the inline assembly code in the
29 #include "../all_atomic_load_store.h"
31 #include "../all_acquire_release_volatile.h"
33 #include "../test_and_set_t_is_char.h"
35 #include <machine/sys/inline.h>
38 # define AO_T_FASIZE _FASZ_D
39 # define AO_T_SIZE _SZ_D
41 # define AO_T_FASIZE _FASZ_W
42 # define AO_T_SIZE _SZ_W
50 #define AO_HAVE_nop_full
53 AO_fetch_and_add1_acquire (volatile AO_t *p)
55 return _Asm_fetchadd(AO_T_FASIZE, _SEM_ACQ, p, 1,
56 _LDHINT_NONE, _DOWN_MEM_FENCE);
58 #define AO_HAVE_fetch_and_add1_acquire
61 AO_fetch_and_add1_release (volatile AO_t *p)
63 return _Asm_fetchadd(AO_T_FASIZE, _SEM_REL, p, 1,
64 _LDHINT_NONE, _UP_MEM_FENCE);
66 #define AO_HAVE_fetch_and_add1_release
69 AO_fetch_and_sub1_acquire (volatile AO_t *p)
71 return _Asm_fetchadd(AO_T_FASIZE, _SEM_ACQ, p, -1,
72 _LDHINT_NONE, _DOWN_MEM_FENCE);
74 #define AO_HAVE_fetch_and_sub1_acquire
77 AO_fetch_and_sub1_release (volatile AO_t *p)
79 return _Asm_fetchadd(AO_T_FASIZE, _SEM_REL, p, -1,
80 _LDHINT_NONE, _UP_MEM_FENCE);
82 #define AO_HAVE_fetch_and_sub1_release
85 AO_compare_and_swap_acquire(volatile AO_t *addr,
86 AO_t old, AO_t new_val)
90 _Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
91 oldval = _Asm_cmpxchg(AO_T_SIZE, _SEM_ACQ, addr,
92 new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
93 return (oldval == old);
95 #define AO_HAVE_compare_and_swap_acquire
98 AO_compare_and_swap_release(volatile AO_t *addr,
99 AO_t old, AO_t new_val)
102 _Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
103 oldval = _Asm_cmpxchg(AO_T_SIZE, _SEM_REL, addr,
104 new_val, _LDHINT_NONE, _UP_MEM_FENCE);
105 /* Hopefully the compiler knows not to reorder the above two? */
106 return (oldval == old);
108 #define AO_HAVE_compare_and_swap_release
111 AO_char_compare_and_swap_acquire(volatile unsigned char *addr,
112 unsigned char old, unsigned char new_val)
114 unsigned char oldval;
116 _Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
117 oldval = _Asm_cmpxchg(_SZ_B, _SEM_ACQ, addr,
118 new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
119 return (oldval == old);
121 #define AO_HAVE_char_compare_and_swap_acquire
124 AO_char_compare_and_swap_release(volatile unsigned char *addr,
125 unsigned char old, unsigned char new_val)
127 unsigned char oldval;
128 _Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
129 oldval = _Asm_cmpxchg(_SZ_B, _SEM_REL, addr,
130 new_val, _LDHINT_NONE, _UP_MEM_FENCE);
131 /* Hopefully the compiler knows not to reorder the above two? */
132 return (oldval == old);
134 #define AO_HAVE_char_compare_and_swap_release
137 AO_short_compare_and_swap_acquire(volatile unsigned short *addr,
138 unsigned short old, unsigned short new_val)
140 unsigned short oldval;
142 _Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
143 oldval = _Asm_cmpxchg(_SZ_B, _SEM_ACQ, addr,
144 new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
145 return (oldval == old);
147 #define AO_HAVE_short_compare_and_swap_acquire
150 AO_short_compare_and_swap_release(volatile unsigned short *addr,
151 unsigned short old, unsigned short new_val)
153 unsigned short oldval;
154 _Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
155 oldval = _Asm_cmpxchg(_SZ_B, _SEM_REL, addr,
156 new_val, _LDHINT_NONE, _UP_MEM_FENCE);
157 /* Hopefully the compiler knows not to reorder the above two? */
158 return (oldval == old);
160 #define AO_HAVE_short_compare_and_swap_release
163 /* Generalize first to define more AO_int_... primitives. */
164 # include "../../generalize.h"
165 # include "../ao_t_is_int.h"