1 /*
2 * Copyright (c) 2003-2011 Hewlett-Packard Development Company, L.P.
3 *
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:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
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
20 * SOFTWARE.
21 */
22
23 /*
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
26 * gcc file.
27 */
28
29 #include "../all_atomic_load_store.h"
30
31 #include "../all_acquire_release_volatile.h"
32
33 #include "../test_and_set_t_is_char.h"
34
35 #include <machine/sys/inline.h>
36
37 #ifdef __LP64__
38 # define AO_T_FASIZE _FASZ_D
39 # define AO_T_SIZE _SZ_D
40 #else
41 # define AO_T_FASIZE _FASZ_W
42 # define AO_T_SIZE _SZ_W
43 #endif
44
45 AO_INLINE void
AO_nop_full(void)46 AO_nop_full(void)
47 {
48 _Asm_mf();
49 }
50 #define AO_HAVE_nop_full
51
52 #ifndef AO_PREFER_GENERALIZED
53 AO_INLINE AO_t
AO_fetch_and_add1_acquire(volatile AO_t * p)54 AO_fetch_and_add1_acquire (volatile AO_t *p)
55 {
56 return _Asm_fetchadd(AO_T_FASIZE, _SEM_ACQ, p, 1,
57 _LDHINT_NONE, _DOWN_MEM_FENCE);
58 }
59 #define AO_HAVE_fetch_and_add1_acquire
60
61 AO_INLINE AO_t
AO_fetch_and_add1_release(volatile AO_t * p)62 AO_fetch_and_add1_release (volatile AO_t *p)
63 {
64 return _Asm_fetchadd(AO_T_FASIZE, _SEM_REL, p, 1,
65 _LDHINT_NONE, _UP_MEM_FENCE);
66 }
67 #define AO_HAVE_fetch_and_add1_release
68
69 AO_INLINE AO_t
AO_fetch_and_sub1_acquire(volatile AO_t * p)70 AO_fetch_and_sub1_acquire (volatile AO_t *p)
71 {
72 return _Asm_fetchadd(AO_T_FASIZE, _SEM_ACQ, p, -1,
73 _LDHINT_NONE, _DOWN_MEM_FENCE);
74 }
75 #define AO_HAVE_fetch_and_sub1_acquire
76
77 AO_INLINE AO_t
AO_fetch_and_sub1_release(volatile AO_t * p)78 AO_fetch_and_sub1_release (volatile AO_t *p)
79 {
80 return _Asm_fetchadd(AO_T_FASIZE, _SEM_REL, p, -1,
81 _LDHINT_NONE, _UP_MEM_FENCE);
82 }
83 #define AO_HAVE_fetch_and_sub1_release
84 #endif /* !AO_PREFER_GENERALIZED */
85
86 AO_INLINE AO_t
AO_fetch_compare_and_swap_acquire(volatile AO_t * addr,AO_t old_val,AO_t new_val)87 AO_fetch_compare_and_swap_acquire(volatile AO_t *addr, AO_t old_val,
88 AO_t new_val)
89 {
90 _Asm_mov_to_ar(_AREG_CCV, old_val, _DOWN_MEM_FENCE);
91 return _Asm_cmpxchg(AO_T_SIZE, _SEM_ACQ, addr,
92 new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
93 }
94 #define AO_HAVE_fetch_compare_and_swap_acquire
95
96 AO_INLINE AO_t
AO_fetch_compare_and_swap_release(volatile AO_t * addr,AO_t old_val,AO_t new_val)97 AO_fetch_compare_and_swap_release(volatile AO_t *addr, AO_t old_val,
98 AO_t new_val)
99 {
100 _Asm_mov_to_ar(_AREG_CCV, old_val, _UP_MEM_FENCE);
101 return _Asm_cmpxchg(AO_T_SIZE, _SEM_REL, addr,
102 new_val, _LDHINT_NONE, _UP_MEM_FENCE);
103
104 }
105 #define AO_HAVE_fetch_compare_and_swap_release
106
107 AO_INLINE unsigned char
AO_char_fetch_compare_and_swap_acquire(volatile unsigned char * addr,unsigned char old_val,unsigned char new_val)108 AO_char_fetch_compare_and_swap_acquire(volatile unsigned char *addr,
109 unsigned char old_val, unsigned char new_val)
110 {
111 _Asm_mov_to_ar(_AREG_CCV, old_val, _DOWN_MEM_FENCE);
112 return _Asm_cmpxchg(_SZ_B, _SEM_ACQ, addr,
113 new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
114
115 }
116 #define AO_HAVE_char_fetch_compare_and_swap_acquire
117
118 AO_INLINE unsigned char
AO_char_fetch_compare_and_swap_release(volatile unsigned char * addr,unsigned char old_val,unsigned char new_val)119 AO_char_fetch_compare_and_swap_release(volatile unsigned char *addr,
120 unsigned char old_val, unsigned char new_val)
121 {
122 _Asm_mov_to_ar(_AREG_CCV, old_val, _UP_MEM_FENCE);
123 return _Asm_cmpxchg(_SZ_B, _SEM_REL, addr,
124 new_val, _LDHINT_NONE, _UP_MEM_FENCE);
125
126 }
127 #define AO_HAVE_char_fetch_compare_and_swap_release
128
129 AO_INLINE unsigned short
AO_short_fetch_compare_and_swap_acquire(volatile unsigned short * addr,unsigned short old_val,unsigned short new_val)130 AO_short_fetch_compare_and_swap_acquire(volatile unsigned short *addr,
131 unsigned short old_val,
132 unsigned short new_val)
133 {
134 _Asm_mov_to_ar(_AREG_CCV, old_val, _DOWN_MEM_FENCE);
135 return _Asm_cmpxchg(_SZ_B, _SEM_ACQ, addr,
136 new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
137
138 }
139 #define AO_HAVE_short_fetch_compare_and_swap_acquire
140
141 AO_INLINE unsigned short
AO_short_fetch_compare_and_swap_release(volatile unsigned short * addr,unsigned short old_val,unsigned short new_val)142 AO_short_fetch_compare_and_swap_release(volatile unsigned short *addr,
143 unsigned short old_val,
144 unsigned short new_val)
145 {
146 _Asm_mov_to_ar(_AREG_CCV, old_val, _UP_MEM_FENCE);
147 return _Asm_cmpxchg(_SZ_B, _SEM_REL, addr,
148 new_val, _LDHINT_NONE, _UP_MEM_FENCE);
149
150 }
151 #define AO_HAVE_short_fetch_compare_and_swap_release
152
153 #ifndef __LP64__
154 # define AO_T_IS_INT
155 #endif
156