1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3 * Compiler-dependent intrinsics.
4 *
5 * Copyright (C) 2002-2003 Hewlett-Packard Co
6 * David Mosberger-Tang <davidm@hpl.hp.com>
7 */
8 #ifndef _UAPI_ASM_IA64_INTRINSICS_H
9 #define _UAPI_ASM_IA64_INTRINSICS_H
10
11
12 #ifndef __ASSEMBLY__
13
14 #include <linux/types.h>
15 /* include compiler specific intrinsics */
16 #include <asm/ia64regs.h>
17 #ifdef __INTEL_COMPILER
18 # include <asm/intel_intrin.h>
19 #else
20 # include <asm/gcc_intrin.h>
21 #endif
22 #include <asm/cmpxchg.h>
23
24 #define ia64_native_get_psr_i() (ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I)
25
26 #define ia64_native_set_rr0_to_rr4(val0, val1, val2, val3, val4) \
27 do { \
28 ia64_native_set_rr(0x0000000000000000UL, (val0)); \
29 ia64_native_set_rr(0x2000000000000000UL, (val1)); \
30 ia64_native_set_rr(0x4000000000000000UL, (val2)); \
31 ia64_native_set_rr(0x6000000000000000UL, (val3)); \
32 ia64_native_set_rr(0x8000000000000000UL, (val4)); \
33 } while (0)
34
35 /*
36 * Force an unresolved reference if someone tries to use
37 * ia64_fetch_and_add() with a bad value.
38 */
39 extern unsigned long __bad_size_for_ia64_fetch_and_add (void);
40 extern unsigned long __bad_increment_for_ia64_fetch_and_add (void);
41
42 #define IA64_FETCHADD(tmp,v,n,sz,sem) \
43 ({ \
44 switch (sz) { \
45 case 4: \
46 tmp = ia64_fetchadd4_##sem((unsigned int *) v, n); \
47 break; \
48 \
49 case 8: \
50 tmp = ia64_fetchadd8_##sem((unsigned long *) v, n); \
51 break; \
52 \
53 default: \
54 __bad_size_for_ia64_fetch_and_add(); \
55 } \
56 })
57
58 #define ia64_fetchadd(i,v,sem) \
59 ({ \
60 __u64 _tmp; \
61 volatile __typeof__(*(v)) *_v = (v); \
62 /* Can't use a switch () here: gcc isn't always smart enough for that... */ \
63 if ((i) == -16) \
64 IA64_FETCHADD(_tmp, _v, -16, sizeof(*(v)), sem); \
65 else if ((i) == -8) \
66 IA64_FETCHADD(_tmp, _v, -8, sizeof(*(v)), sem); \
67 else if ((i) == -4) \
68 IA64_FETCHADD(_tmp, _v, -4, sizeof(*(v)), sem); \
69 else if ((i) == -1) \
70 IA64_FETCHADD(_tmp, _v, -1, sizeof(*(v)), sem); \
71 else if ((i) == 1) \
72 IA64_FETCHADD(_tmp, _v, 1, sizeof(*(v)), sem); \
73 else if ((i) == 4) \
74 IA64_FETCHADD(_tmp, _v, 4, sizeof(*(v)), sem); \
75 else if ((i) == 8) \
76 IA64_FETCHADD(_tmp, _v, 8, sizeof(*(v)), sem); \
77 else if ((i) == 16) \
78 IA64_FETCHADD(_tmp, _v, 16, sizeof(*(v)), sem); \
79 else \
80 _tmp = __bad_increment_for_ia64_fetch_and_add(); \
81 (__typeof__(*(v))) (_tmp); /* return old value */ \
82 })
83
84 #define ia64_fetch_and_add(i,v) (ia64_fetchadd(i, v, rel) + (i)) /* return new value */
85
86 #endif
87
88
89 #ifndef __ASSEMBLY__
90
91 #define IA64_INTRINSIC_API(name) ia64_native_ ## name
92 #define IA64_INTRINSIC_MACRO(name) ia64_native_ ## name
93
94
95 /************************************************/
96 /* Instructions paravirtualized for correctness */
97 /************************************************/
98 /* fc, thash, get_cpuid, get_pmd, get_eflags, set_eflags */
99 /* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
100 * is not currently used (though it may be in a long-format VHPT system!)
101 */
102 #define ia64_fc IA64_INTRINSIC_API(fc)
103 #define ia64_thash IA64_INTRINSIC_API(thash)
104 #define ia64_get_cpuid IA64_INTRINSIC_API(get_cpuid)
105 #define ia64_get_pmd IA64_INTRINSIC_API(get_pmd)
106
107
108 /************************************************/
109 /* Instructions paravirtualized for performance */
110 /************************************************/
111 #define ia64_ssm IA64_INTRINSIC_MACRO(ssm)
112 #define ia64_rsm IA64_INTRINSIC_MACRO(rsm)
113 #define ia64_getreg IA64_INTRINSIC_MACRO(getreg)
114 #define ia64_setreg IA64_INTRINSIC_API(setreg)
115 #define ia64_set_rr IA64_INTRINSIC_API(set_rr)
116 #define ia64_get_rr IA64_INTRINSIC_API(get_rr)
117 #define ia64_ptcga IA64_INTRINSIC_API(ptcga)
118 #define ia64_get_psr_i IA64_INTRINSIC_API(get_psr_i)
119 #define ia64_intrin_local_irq_restore \
120 IA64_INTRINSIC_API(intrin_local_irq_restore)
121 #define ia64_set_rr0_to_rr4 IA64_INTRINSIC_API(set_rr0_to_rr4)
122
123 #endif /* !__ASSEMBLY__ */
124
125 #endif /* _UAPI_ASM_IA64_INTRINSICS_H */