2 * Copyright (c) 2003 by Hewlett-Packard Company. All rights reserved.
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 Intel (ecc)
25 * compiler. We use intrinsics instead of the inline assembly code in the
29 #include "../all_atomic_load_store.h"
31 #include "../test_and_set_t_is_char.h"
33 #include <ia64intrin.h>
35 /* The acquire release semantics of volatile can be turned off. And volatile */
36 /* operations in icc9 don't imply ordering with respect to other nonvolatile */
39 #define AO_INTEL_PTR_t void *
42 AO_load_acquire(volatile AO_t *p)
44 return (AO_t)(__ld8_acq((AO_INTEL_PTR_t)p));
46 #define AO_HAVE_load_acquire
49 AO_store_release(volatile AO_t *p, AO_t val)
51 __st8_rel((AO_INTEL_PTR_t)p, (__int64)val);
53 #define AO_HAVE_store_release
55 AO_INLINE unsigned char
56 AO_char_load_acquire(volatile unsigned char *p)
58 /* A normal volatile load generates an ld.acq */
59 return (__ld1_acq((AO_INTEL_PTR_t)p));
61 #define AO_HAVE_char_load_acquire
64 AO_char_store_release(volatile unsigned char *p, unsigned char val)
66 __st1_rel((AO_INTEL_PTR_t)p, val);
68 #define AO_HAVE_char_store_release
70 AO_INLINE unsigned short
71 AO_short_load_acquire(volatile unsigned short *p)
73 /* A normal volatile load generates an ld.acq */
74 return (__ld2_acq((AO_INTEL_PTR_t)p));
76 #define AO_HAVE_short_load_acquire
79 AO_short_store_release(volatile unsigned short *p, unsigned short val)
81 __st2_rel((AO_INTEL_PTR_t)p, val);
83 #define AO_HAVE_short_store_release
85 AO_INLINE unsigned int
86 AO_int_load_acquire(volatile unsigned int *p)
88 /* A normal volatile load generates an ld.acq */
89 return (__ld4_acq((AO_INTEL_PTR_t)p));
91 #define AO_HAVE_int_load_acquire
94 AO_int_store_release(volatile unsigned int *p, unsigned int val)
96 __st4_rel((AO_INTEL_PTR_t)p, val);
98 #define AO_HAVE_int_store_release
105 #define AO_HAVE_nop_full
108 AO_fetch_and_add1_acquire (volatile AO_t *p)
110 return __fetchadd8_acq((unsigned __int64 *)p, 1);
112 #define AO_HAVE_fetch_and_add1_acquire
115 AO_fetch_and_add1_release (volatile AO_t *p)
117 return __fetchadd8_rel((unsigned __int64 *)p, 1);
120 #define AO_HAVE_fetch_and_add1_release
123 AO_fetch_and_sub1_acquire (volatile AO_t *p)
125 return __fetchadd8_acq((unsigned __int64 *)p, -1);
128 #define AO_HAVE_fetch_and_sub1_acquire
131 AO_fetch_and_sub1_release (volatile AO_t *p)
133 return __fetchadd8_rel((unsigned __int64 *)p, -1);
136 #define AO_HAVE_fetch_and_sub1_release
139 AO_compare_and_swap_acquire(volatile AO_t *addr,
140 AO_t old, AO_t new_val)
143 oldval = _InterlockedCompareExchange64_acq(addr, new_val, old);
144 return (oldval == old);
147 #define AO_HAVE_compare_and_swap_acquire
150 AO_compare_and_swap_release(volatile AO_t *addr,
151 AO_t old, AO_t new_val)
154 oldval = _InterlockedCompareExchange64_rel(addr, new_val, old);
155 return (oldval == old);
158 #define AO_HAVE_compare_and_swap_release
161 AO_char_compare_and_swap_acquire(volatile unsigned char *addr,
162 unsigned char old, unsigned char new_val)
164 unsigned char oldval;
165 oldval = _InterlockedCompareExchange8_acq(addr, new_val, old);
166 return (oldval == old);
169 #define AO_HAVE_char_compare_and_swap_acquire
172 AO_char_compare_and_swap_release(volatile unsigned char *addr,
173 unsigned char old, unsigned char new_val)
175 unsigned char oldval;
176 oldval = _InterlockedCompareExchange8_rel(addr, new_val, old);
177 return (oldval == old);
180 #define AO_HAVE_char_compare_and_swap_release
183 AO_short_compare_and_swap_acquire(volatile unsigned short *addr,
184 unsigned short old, unsigned short new_val)
186 unsigned short oldval;
187 oldval = _InterlockedCompareExchange16_acq(addr, new_val, old);
188 return (oldval == old);
191 #define AO_HAVE_short_compare_and_swap_acquire
194 AO_short_compare_and_swap_release(volatile unsigned short *addr,
195 unsigned short old, unsigned short new_val)
197 unsigned short oldval;
198 oldval = _InterlockedCompareExchange16_rel(addr, new_val, old);
199 return (oldval == old);
202 #define AO_HAVE_short_compare_and_swap_release
205 AO_int_compare_and_swap_acquire(volatile unsigned int *addr,
206 unsigned int old, unsigned int new_val)
209 oldval = _InterlockedCompareExchange_acq(addr, new_val, old);
210 return (oldval == old);
213 #define AO_HAVE_int_compare_and_swap_acquire
216 AO_int_compare_and_swap_release(volatile unsigned int *addr,
217 unsigned int old, unsigned int new_val)
220 oldval = _InterlockedCompareExchange_rel(addr, new_val, old);
221 return (oldval == old);
224 #define AO_HAVE_int_compare_and_swap_release