[linux.git] / include / asm-ia64 / intrinsics.h

#ifndef _ASM_IA64_INTRINSICS_H
#define _ASM_IA64_INTRINSICS_H

/*
 * Compiler-dependent intrinsics.
 *
 * Copyright (C) 2002-2003 Hewlett-Packard Co
 *	David Mosberger-Tang <[email protected]>
 */

#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

/*
 * 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)

#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
#endif /* _ASM_IA64_INTRINSICS_H */
Commit	Line	Data
1da177e4 LT	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 <[email protected]>
	9	*/
	10
	11	#ifndef __ASSEMBLY__
1da177e4 LT	12
	13	/* include compiler specific intrinsics */
	14	#include <asm/ia64regs.h>
	15	#ifdef __INTEL_COMPILER
	16	# include <asm/intel_intrin.h>
	17	#else
	18	# include <asm/gcc_intrin.h>
	19	#endif
	20
	21	/*
	22	* Force an unresolved reference if someone tries to use
	23	* ia64_fetch_and_add() with a bad value.
	24	*/
	25	extern unsigned long __bad_size_for_ia64_fetch_and_add (void);
	26	extern unsigned long __bad_increment_for_ia64_fetch_and_add (void);
	27
	28	#define IA64_FETCHADD(tmp,v,n,sz,sem) \
	29	({ \
	30	switch (sz) { \
	31	case 4: \
	32	tmp = ia64_fetchadd4_##sem((unsigned int *) v, n); \
	33	break; \
	34	\
	35	case 8: \
	36	tmp = ia64_fetchadd8_##sem((unsigned long *) v, n); \
	37	break; \
	38	\
	39	default: \
	40	__bad_size_for_ia64_fetch_and_add(); \
	41	} \
	42	})
	43
	44	#define ia64_fetchadd(i,v,sem) \
	45	({ \
	46	__u64 _tmp; \
	47	volatile __typeof__((v)) _v = (v); \
	48	/* Can't use a switch () here: gcc isn't always smart enough for that... */ \
	49	if ((i) == -16) \
	50	IA64_FETCHADD(_tmp, _v, -16, sizeof(*(v)), sem); \
	51	else if ((i) == -8) \
	52	IA64_FETCHADD(_tmp, _v, -8, sizeof(*(v)), sem); \
	53	else if ((i) == -4) \
	54	IA64_FETCHADD(_tmp, _v, -4, sizeof(*(v)), sem); \
	55	else if ((i) == -1) \
	56	IA64_FETCHADD(_tmp, _v, -1, sizeof(*(v)), sem); \
	57	else if ((i) == 1) \
	58	IA64_FETCHADD(_tmp, _v, 1, sizeof(*(v)), sem); \
	59	else if ((i) == 4) \
	60	IA64_FETCHADD(_tmp, _v, 4, sizeof(*(v)), sem); \
	61	else if ((i) == 8) \
	62	IA64_FETCHADD(_tmp, _v, 8, sizeof(*(v)), sem); \
	63	else if ((i) == 16) \
	64	IA64_FETCHADD(_tmp, _v, 16, sizeof(*(v)), sem); \
	65	else \
	66	_tmp = __bad_increment_for_ia64_fetch_and_add(); \
	67	(__typeof__((v))) (_tmp); / return old value */ \
	68	})
	69
	70	#define ia64_fetch_and_add(i,v) (ia64_fetchadd(i, v, rel) + (i)) /* return new value */
	71
	72	/*
	73	* This function doesn't exist, so you'll get a linker error if
	74	* something tries to do an invalid xchg().
	75	*/
76	extern void ia64_xchg_called_with_bad_pointer (void);
77
78	#define __xchg(x,ptr,size) \
79	({ \
80	unsigned long __xchg_result; \
81	\
82	switch (size) { \
83	case 1: \
84	__xchg_result = ia64_xchg1((__u8 *)ptr, x); \
85	break; \
86	\
87	case 2: \
88	__xchg_result = ia64_xchg2((__u16 *)ptr, x); \
89	break; \
90	\
91	case 4: \
92	__xchg_result = ia64_xchg4((__u32 *)ptr, x); \
93	break; \
94	\
95	case 8: \
96	__xchg_result = ia64_xchg8((__u64 *)ptr, x); \
97	break; \
98	default: \
99	ia64_xchg_called_with_bad_pointer(); \
100	} \
101	__xchg_result; \
102	})
103
104	#define xchg(ptr,x) \
105	((__typeof__((ptr))) __xchg ((unsigned long) (x), (ptr), sizeof((ptr))))
106
107	/*
108	* Atomic compare and exchange. Compare OLD with MEM, if identical,
109	* store NEW in MEM. Return the initial value in MEM. Success is
110	* indicated by comparing RETURN with OLD.
111	*/
112
113	#define __HAVE_ARCH_CMPXCHG 1
114
115	/*
116	* This function doesn't exist, so you'll get a linker error
117	* if something tries to do an invalid cmpxchg().
118	*/
119	extern long ia64_cmpxchg_called_with_bad_pointer (void);
120
121	#define ia64_cmpxchg(sem,ptr,old,new,size) \
122	({ \
123	__u64 _o_, _r_; \
124	\
125	switch (size) { \
126	case 1: _o_ = (__u8 ) (long) (old); break; \
127	case 2: _o_ = (__u16) (long) (old); break; \
128	case 4: _o_ = (__u32) (long) (old); break; \
129	case 8: _o_ = (__u64) (long) (old); break; \
130	default: break; \
131	} \
132	switch (size) { \
133	case 1: \
134	_r_ = ia64_cmpxchg1_##sem((__u8 *) ptr, new, _o_); \
135	break; \
136	\
137	case 2: \
138	_r_ = ia64_cmpxchg2_##sem((__u16 *) ptr, new, _o_); \
139	break; \
140	\
141	case 4: \
142	_r_ = ia64_cmpxchg4_##sem((__u32 *) ptr, new, _o_); \
143	break; \
144	\
145	case 8: \
146	_r_ = ia64_cmpxchg8_##sem((__u64 *) ptr, new, _o_); \
147	break; \
148	\
149	default: \
150	_r_ = ia64_cmpxchg_called_with_bad_pointer(); \
151	break; \
152	} \
153	(__typeof__(old)) _r_; \
154	})
155
156	#define cmpxchg_acq(ptr,o,n) ia64_cmpxchg(acq, (ptr), (o), (n), sizeof(*(ptr)))
157	#define cmpxchg_rel(ptr,o,n) ia64_cmpxchg(rel, (ptr), (o), (n), sizeof(*(ptr)))
158
159	/* for compatibility with other platforms: */
160	#define cmpxchg(ptr,o,n) cmpxchg_acq(ptr,o,n)
161
162	#ifdef CONFIG_IA64_DEBUG_CMPXCHG
163	# define CMPXCHG_BUGCHECK_DECL int _cmpxchg_bugcheck_count = 128;
164	# define CMPXCHG_BUGCHECK(v) \
165	do { \
166	if (_cmpxchg_bugcheck_count-- <= 0) { \
167	void *ip; \
168	extern int printk(const char *fmt, ...); \
169	ip = (void *) ia64_getreg(_IA64_REG_IP); \
170	printk("CMPXCHG_BUGCHECK: stuck at %p on word %p\n", ip, (v)); \
171	break; \
172	} \
173	} while (0)
174	#else /* !CONFIG_IA64_DEBUG_CMPXCHG */
175	# define CMPXCHG_BUGCHECK_DECL
176	# define CMPXCHG_BUGCHECK(v)
177	#endif /* !CONFIG_IA64_DEBUG_CMPXCHG */
178
179	#endif
180	#endif /* _ASM_IA64_INTRINSICS_H */