1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
#ifndef _ASM_IA64_INTRINSICS_H
#define _ASM_IA64_INTRINSICS_H
/*
* Compiler-dependent intrinsics.
*
* Copyright (C) 2002-2003 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
#ifndef __ASSEMBLY__
/* include compiler specific intrinsics */
#include <asm/ia64regs.h>
#ifdef __INTEL_COMPILER
# include <asm/intel_intrin.h>
#else
# include <asm/gcc_intrin.h>
#endif
#define ia64_native_get_psr_i() (ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I)
#define ia64_native_set_rr0_to_rr4(val0, val1, val2, val3, val4) \
do { \
ia64_native_set_rr(0x0000000000000000UL, (val0)); \
ia64_native_set_rr(0x2000000000000000UL, (val1)); \
ia64_native_set_rr(0x4000000000000000UL, (val2)); \
ia64_native_set_rr(0x6000000000000000UL, (val3)); \
ia64_native_set_rr(0x8000000000000000UL, (val4)); \
} while (0)
/*
* Force an unresolved reference if someone tries to use
* ia64_fetch_and_add() with a bad value.
*/
extern unsigned long __bad_size_for_ia64_fetch_and_add (void);
extern unsigned long __bad_increment_for_ia64_fetch_and_add (void);
#define IA64_FETCHADD(tmp,v,n,sz,sem) \
({ \
switch (sz) { \
case 4: \
tmp = ia64_fetchadd4_##sem((unsigned int *) v, n); \
break; \
\
case 8: \
tmp = ia64_fetchadd8_##sem((unsigned long *) v, n); \
break; \
\
default: \
__bad_size_for_ia64_fetch_and_add(); \
} \
})
#define ia64_fetchadd(i,v,sem) \
({ \
__u64 _tmp; \
volatile __typeof__(*(v)) *_v = (v); \
/* Can't use a switch () here: gcc isn't always smart enough for that... */ \
if ((i) == -16) \
IA64_FETCHADD(_tmp, _v, -16, sizeof(*(v)), sem); \
else if ((i) == -8) \
IA64_FETCHADD(_tmp, _v, -8, sizeof(*(v)), sem); \
else if ((i) == -4) \
IA64_FETCHADD(_tmp, _v, -4, sizeof(*(v)), sem); \
else if ((i) == -1) \
IA64_FETCHADD(_tmp, _v, -1, sizeof(*(v)), sem); \
else if ((i) == 1) \
IA64_FETCHADD(_tmp, _v, 1, sizeof(*(v)), sem); \
else if ((i) == 4) \
IA64_FETCHADD(_tmp, _v, 4, sizeof(*(v)), sem); \
else if ((i) == 8) \
IA64_FETCHADD(_tmp, _v, 8, sizeof(*(v)), sem); \
else if ((i) == 16) \
IA64_FETCHADD(_tmp, _v, 16, sizeof(*(v)), sem); \
else \
_tmp = __bad_increment_for_ia64_fetch_and_add(); \
(__typeof__(*(v))) (_tmp); /* return old value */ \
})
#define ia64_fetch_and_add(i,v) (ia64_fetchadd(i, v, rel) + (i)) /* return new value */
/*
* This function doesn't exist, so you'll get a linker error if
* something tries to do an invalid xchg().
*/
extern void ia64_xchg_called_with_bad_pointer (void);
#define __xchg(x,ptr,size) \
({ \
unsigned long __xchg_result; \
\
switch (size) { \
case 1: \
__xchg_result = ia64_xchg1((__u8 *)ptr, x); \
break; \
\
case 2: \
__xchg_result = ia64_xchg2((__u16 *)ptr, x); \
break; \
\
case 4: \
__xchg_result = ia64_xchg4((__u32 *)ptr, x); \
break; \
\
case 8: \
__xchg_result = ia64_xchg8((__u64 *)ptr, x); \
break; \
default: \
ia64_xchg_called_with_bad_pointer(); \
} \
__xchg_result; \
})
#define xchg(ptr,x) \
((__typeof__(*(ptr))) __xchg ((unsigned long) (x), (ptr), sizeof(*(ptr))))
/*
* Atomic compare and exchange. Compare OLD with MEM, if identical,
* store NEW in MEM. Return the initial value in MEM. Success is
* indicated by comparing RETURN with OLD.
*/
#define __HAVE_ARCH_CMPXCHG 1
/*
* This function doesn't exist, so you'll get a linker error
* if something tries to do an invalid cmpxchg().
*/
extern long ia64_cmpxchg_called_with_bad_pointer (void);
#define ia64_cmpxchg(sem,ptr,old,new,size) \
({ \
__u64 _o_, _r_; \
\
switch (size) { \
case 1: _o_ = (__u8 ) (long) (old); break; \
case 2: _o_ = (__u16) (long) (old); break; \
case 4: _o_ = (__u32) (long) (old); break; \
case 8: _o_ = (__u64) (long) (old); break; \
default: break; \
} \
switch (size) { \
case 1: \
_r_ = ia64_cmpxchg1_##sem((__u8 *) ptr, new, _o_); \
break; \
\
case 2: \
_r_ = ia64_cmpxchg2_##sem((__u16 *) ptr, new, _o_); \
break; \
\
case 4: \
_r_ = ia64_cmpxchg4_##sem((__u32 *) ptr, new, _o_); \
break; \
\
case 8: \
_r_ = ia64_cmpxchg8_##sem((__u64 *) ptr, new, _o_); \
break; \
\
default: \
_r_ = ia64_cmpxchg_called_with_bad_pointer(); \
break; \
} \
(__typeof__(old)) _r_; \
})
#define cmpxchg_acq(ptr, o, n) \
ia64_cmpxchg(acq, (ptr), (o), (n), sizeof(*(ptr)))
#define cmpxchg_rel(ptr, o, n) \
ia64_cmpxchg(rel, (ptr), (o), (n), sizeof(*(ptr)))
/* for compatibility with other platforms: */
#define cmpxchg(ptr, o, n) cmpxchg_acq((ptr), (o), (n))
#define cmpxchg64(ptr, o, n) cmpxchg_acq((ptr), (o), (n))
#define cmpxchg_local cmpxchg
#define cmpxchg64_local cmpxchg64
#ifdef CONFIG_IA64_DEBUG_CMPXCHG
# define CMPXCHG_BUGCHECK_DECL int _cmpxchg_bugcheck_count = 128;
# define CMPXCHG_BUGCHECK(v) \
do { \
if (_cmpxchg_bugcheck_count-- <= 0) { \
void *ip; \
extern int printk(const char *fmt, ...); \
ip = (void *) ia64_getreg(_IA64_REG_IP); \
printk("CMPXCHG_BUGCHECK: stuck at %p on word %p\n", ip, (v)); \
break; \
} \
} while (0)
#else /* !CONFIG_IA64_DEBUG_CMPXCHG */
# define CMPXCHG_BUGCHECK_DECL
# define CMPXCHG_BUGCHECK(v)
#endif /* !CONFIG_IA64_DEBUG_CMPXCHG */
#endif
#ifdef __KERNEL__
#include <asm/paravirt_privop.h>
#endif
#ifndef __ASSEMBLY__
#if defined(CONFIG_PARAVIRT) && defined(__KERNEL__)
#define IA64_INTRINSIC_API(name) pv_cpu_ops.name
#define IA64_INTRINSIC_MACRO(name) paravirt_ ## name
#else
#define IA64_INTRINSIC_API(name) ia64_native_ ## name
#define IA64_INTRINSIC_MACRO(name) ia64_native_ ## name
#endif
/************************************************/
/* Instructions paravirtualized for correctness */
/************************************************/
/* fc, thash, get_cpuid, get_pmd, get_eflags, set_eflags */
/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
* is not currently used (though it may be in a long-format VHPT system!)
*/
#define ia64_fc IA64_INTRINSIC_API(fc)
#define ia64_thash IA64_INTRINSIC_API(thash)
#define ia64_get_cpuid IA64_INTRINSIC_API(get_cpuid)
#define ia64_get_pmd IA64_INTRINSIC_API(get_pmd)
/************************************************/
/* Instructions paravirtualized for performance */
/************************************************/
#define ia64_ssm IA64_INTRINSIC_MACRO(ssm)
#define ia64_rsm IA64_INTRINSIC_MACRO(rsm)
#define ia64_getreg IA64_INTRINSIC_API(getreg)
#define ia64_setreg IA64_INTRINSIC_API(setreg)
#define ia64_set_rr IA64_INTRINSIC_API(set_rr)
#define ia64_get_rr IA64_INTRINSIC_API(get_rr)
#define ia64_ptcga IA64_INTRINSIC_API(ptcga)
#define ia64_get_psr_i IA64_INTRINSIC_API(get_psr_i)
#define ia64_intrin_local_irq_restore \
IA64_INTRINSIC_API(intrin_local_irq_restore)
#define ia64_set_rr0_to_rr4 IA64_INTRINSIC_API(set_rr0_to_rr4)
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_IA64_INTRINSICS_H */
|
