1/* SPDX-License-Identifier: GPL-2.0 */
 
 
 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 _ASM_IA64_INTRINSICS_H
 9#define _ASM_IA64_INTRINSICS_H
10
11#include <uapi/asm/intrinsics.h>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
12
13#endif /* _ASM_IA64_INTRINSICS_H */

  1#ifndef _ASM_IA64_INTRINSICS_H
  2#define _ASM_IA64_INTRINSICS_H
  3
  4/*
  5 * Compiler-dependent intrinsics.
  6 *
  7 * Copyright (C) 2002-2003 Hewlett-Packard Co
  8 *	David Mosberger-Tang <davidm@hpl.hp.com>
  9 */
 
 
 10
 11#ifndef __ASSEMBLY__
 12
 13#include <linux/types.h>
 14/* include compiler specific intrinsics */
 15#include <asm/ia64regs.h>
 16#ifdef __INTEL_COMPILER
 17# include <asm/intel_intrin.h>
 18#else
 19# include <asm/gcc_intrin.h>
 20#endif
 21#include <asm/cmpxchg.h>
 22
 23#define ia64_native_get_psr_i()	(ia64_native_getreg(_IA64_REG_PSR) & IA64_PSR_I)
 24
 25#define ia64_native_set_rr0_to_rr4(val0, val1, val2, val3, val4)	\
 26do {									\
 27	ia64_native_set_rr(0x0000000000000000UL, (val0));		\
 28	ia64_native_set_rr(0x2000000000000000UL, (val1));		\
 29	ia64_native_set_rr(0x4000000000000000UL, (val2));		\
 30	ia64_native_set_rr(0x6000000000000000UL, (val3));		\
 31	ia64_native_set_rr(0x8000000000000000UL, (val4));		\
 32} while (0)
 33
 34/*
 35 * Force an unresolved reference if someone tries to use
 36 * ia64_fetch_and_add() with a bad value.
 37 */
 38extern unsigned long __bad_size_for_ia64_fetch_and_add (void);
 39extern unsigned long __bad_increment_for_ia64_fetch_and_add (void);
 40
 41#define IA64_FETCHADD(tmp,v,n,sz,sem)						\
 42({										\
 43	switch (sz) {								\
 44	      case 4:								\
 45	        tmp = ia64_fetchadd4_##sem((unsigned int *) v, n);		\
 46		break;								\
 47										\
 48	      case 8:								\
 49	        tmp = ia64_fetchadd8_##sem((unsigned long *) v, n);		\
 50		break;								\
 51										\
 52	      default:								\
 53		__bad_size_for_ia64_fetch_and_add();				\
 54	}									\
 55})
 56
 57#define ia64_fetchadd(i,v,sem)								\
 58({											\
 59	__u64 _tmp;									\
 60	volatile __typeof__(*(v)) *_v = (v);						\
 61	/* Can't use a switch () here: gcc isn't always smart enough for that... */	\
 62	if ((i) == -16)									\
 63		IA64_FETCHADD(_tmp, _v, -16, sizeof(*(v)), sem);			\
 64	else if ((i) == -8)								\
 65		IA64_FETCHADD(_tmp, _v, -8, sizeof(*(v)), sem);				\
 66	else if ((i) == -4)								\
 67		IA64_FETCHADD(_tmp, _v, -4, sizeof(*(v)), sem);				\
 68	else if ((i) == -1)								\
 69		IA64_FETCHADD(_tmp, _v, -1, sizeof(*(v)), sem);				\
 70	else if ((i) == 1)								\
 71		IA64_FETCHADD(_tmp, _v, 1, sizeof(*(v)), sem);				\
 72	else if ((i) == 4)								\
 73		IA64_FETCHADD(_tmp, _v, 4, sizeof(*(v)), sem);				\
 74	else if ((i) == 8)								\
 75		IA64_FETCHADD(_tmp, _v, 8, sizeof(*(v)), sem);				\
 76	else if ((i) == 16)								\
 77		IA64_FETCHADD(_tmp, _v, 16, sizeof(*(v)), sem);				\
 78	else										\
 79		_tmp = __bad_increment_for_ia64_fetch_and_add();			\
 80	(__typeof__(*(v))) (_tmp);	/* return old value */				\
 81})
 82
 83#define ia64_fetch_and_add(i,v)	(ia64_fetchadd(i, v, rel) + (i)) /* return new value */
 84
 85#endif
 86
 87#ifdef __KERNEL__
 88#include <asm/paravirt_privop.h>
 89#endif
 90
 91#ifndef __ASSEMBLY__
 92
 93#define IA64_INTRINSIC_API(name)	ia64_native_ ## name
 94#define IA64_INTRINSIC_MACRO(name)	ia64_native_ ## name
 95
 96#if defined(__KERNEL__)
 97#if defined(CONFIG_PARAVIRT)
 98# undef IA64_INTRINSIC_API
 99# undef IA64_INTRINSIC_MACRO
100# ifdef ASM_SUPPORTED
101#  define IA64_INTRINSIC_API(name)	paravirt_ ## name
102# else
103#  define IA64_INTRINSIC_API(name)	pv_cpu_ops.name
104# endif
105#define IA64_INTRINSIC_MACRO(name)	paravirt_ ## name
106#endif
107#endif
108
109/************************************************/
110/* Instructions paravirtualized for correctness */
111/************************************************/
112/* fc, thash, get_cpuid, get_pmd, get_eflags, set_eflags */
113/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
114 * is not currently used (though it may be in a long-format VHPT system!)
115 */
116#define ia64_fc				IA64_INTRINSIC_API(fc)
117#define ia64_thash			IA64_INTRINSIC_API(thash)
118#define ia64_get_cpuid			IA64_INTRINSIC_API(get_cpuid)
119#define ia64_get_pmd			IA64_INTRINSIC_API(get_pmd)
120
121
122/************************************************/
123/* Instructions paravirtualized for performance */
124/************************************************/
125#define ia64_ssm			IA64_INTRINSIC_MACRO(ssm)
126#define ia64_rsm			IA64_INTRINSIC_MACRO(rsm)
127#define ia64_getreg			IA64_INTRINSIC_MACRO(getreg)
128#define ia64_setreg			IA64_INTRINSIC_API(setreg)
129#define ia64_set_rr			IA64_INTRINSIC_API(set_rr)
130#define ia64_get_rr			IA64_INTRINSIC_API(get_rr)
131#define ia64_ptcga			IA64_INTRINSIC_API(ptcga)
132#define ia64_get_psr_i			IA64_INTRINSIC_API(get_psr_i)
133#define ia64_intrin_local_irq_restore	\
134	IA64_INTRINSIC_API(intrin_local_irq_restore)
135#define ia64_set_rr0_to_rr4		IA64_INTRINSIC_API(set_rr0_to_rr4)
136
137#endif /* !__ASSEMBLY__ */
138
139#endif /* _ASM_IA64_INTRINSICS_H */