[linux-2.6-block.git] / include / asm-h8300 / bitops.h

#ifndef _H8300_BITOPS_H
#define _H8300_BITOPS_H

/*
 * Copyright 1992, Linus Torvalds.
 * Copyright 2002, Yoshinori Sato
 */

#include <linux/compiler.h>
#include <asm/system.h>

#ifdef __KERNEL__

#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif

/*
 * Function prototypes to keep gcc -Wall happy
 */

/*
 * ffz = Find First Zero in word. Undefined if no zero exists,
 * so code should check against ~0UL first..
 */
static __inline__ unsigned long ffz(unsigned long word)
{
	unsigned long result;

	result = -1;
	__asm__("1:\n\t"
		"shlr.l %2\n\t"
		"adds #1,%0\n\t"
		"bcs 1b"
		: "=r" (result)
		: "0"  (result),"r" (word));
	return result;
}

#define H8300_GEN_BITOP_CONST(OP,BIT)			    \
	case BIT:					    \
	__asm__(OP " #" #BIT ",@%0"::"r"(b_addr):"memory"); \
	break;

#define H8300_GEN_BITOP(FNAME,OP)				      \
static __inline__ void FNAME(int nr, volatile unsigned long* addr)    \
{								      \
	volatile unsigned char *b_addr;				      \
	b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3);    \
	if (__builtin_constant_p(nr)) {				      \
		switch(nr & 7) {				      \
			H8300_GEN_BITOP_CONST(OP,0)		      \
			H8300_GEN_BITOP_CONST(OP,1)		      \
			H8300_GEN_BITOP_CONST(OP,2)		      \
			H8300_GEN_BITOP_CONST(OP,3)		      \
			H8300_GEN_BITOP_CONST(OP,4)		      \
			H8300_GEN_BITOP_CONST(OP,5)		      \
			H8300_GEN_BITOP_CONST(OP,6)		      \
			H8300_GEN_BITOP_CONST(OP,7)		      \
		}						      \
	} else {						      \
		__asm__(OP " %w0,@%1"::"r"(nr),"r"(b_addr):"memory"); \
	}							      \
}

/*
 * clear_bit() doesn't provide any barrier for the compiler.
 */
#define smp_mb__before_clear_bit()	barrier()
#define smp_mb__after_clear_bit()	barrier()

H8300_GEN_BITOP(set_bit	  ,"bset")
H8300_GEN_BITOP(clear_bit ,"bclr")
H8300_GEN_BITOP(change_bit,"bnot")
#define __set_bit(nr,addr)    set_bit((nr),(addr))
#define __clear_bit(nr,addr)  clear_bit((nr),(addr))
#define __change_bit(nr,addr) change_bit((nr),(addr))

#undef H8300_GEN_BITOP
#undef H8300_GEN_BITOP_CONST

static __inline__ int test_bit(int nr, const unsigned long* addr)
{
	return (*((volatile unsigned char *)addr + 
               ((nr >> 3) ^ 3)) & (1UL << (nr & 7))) != 0;
}

#define __test_bit(nr, addr) test_bit(nr, addr)

#define H8300_GEN_TEST_BITOP_CONST_INT(OP,BIT)			     \
	case BIT:						     \
	__asm__("stc ccr,%w1\n\t"				     \
		"orc #0x80,ccr\n\t"				     \
		"bld #" #BIT ",@%4\n\t"				     \
		OP " #" #BIT ",@%4\n\t"				     \
		"rotxl.l %0\n\t"				     \
		"ldc %w1,ccr"					     \
		: "=r"(retval),"=&r"(ccrsave),"=m"(*b_addr)	     \
		: "0" (retval),"r" (b_addr)			     \
		: "memory");                                         \
        break;

#define H8300_GEN_TEST_BITOP_CONST(OP,BIT)			     \
	case BIT:						     \
	__asm__("bld #" #BIT ",@%3\n\t"				     \
		OP " #" #BIT ",@%3\n\t"				     \
		"rotxl.l %0\n\t"				     \
		: "=r"(retval),"=m"(*b_addr)			     \
		: "0" (retval),"r" (b_addr)			     \
		: "memory");                                         \
        break;

#define H8300_GEN_TEST_BITOP(FNNAME,OP)				     \
static __inline__ int FNNAME(int nr, volatile void * addr)	     \
{								     \
	int retval = 0;						     \
	char ccrsave;						     \
	volatile unsigned char *b_addr;				     \
	b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3);   \
	if (__builtin_constant_p(nr)) {				     \
		switch(nr & 7) {				     \
			H8300_GEN_TEST_BITOP_CONST_INT(OP,0)	     \
			H8300_GEN_TEST_BITOP_CONST_INT(OP,1)	     \
			H8300_GEN_TEST_BITOP_CONST_INT(OP,2)	     \
			H8300_GEN_TEST_BITOP_CONST_INT(OP,3)	     \
			H8300_GEN_TEST_BITOP_CONST_INT(OP,4)	     \
			H8300_GEN_TEST_BITOP_CONST_INT(OP,5)	     \
			H8300_GEN_TEST_BITOP_CONST_INT(OP,6)	     \
			H8300_GEN_TEST_BITOP_CONST_INT(OP,7)	     \
		}						     \
	} else {						     \
		__asm__("stc ccr,%w1\n\t"			     \
			"orc #0x80,ccr\n\t"			     \
			"btst %w5,@%4\n\t"			     \
			OP " %w5,@%4\n\t"			     \
			"beq 1f\n\t"				     \
			"inc.l #1,%0\n"				     \
			"1:\n\t"				     \
			"ldc %w1,ccr"				     \
			: "=r"(retval),"=&r"(ccrsave),"=m"(*b_addr)  \
			: "0" (retval),"r" (b_addr),"r"(nr)	     \
			: "memory");				     \
	}							     \
	return retval;						     \
}								     \
								     \
static __inline__ int __ ## FNNAME(int nr, volatile void * addr)     \
{								     \
	int retval = 0;						     \
	volatile unsigned char *b_addr;				     \
	b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3);   \
	if (__builtin_constant_p(nr)) {				     \
		switch(nr & 7) {				     \
			H8300_GEN_TEST_BITOP_CONST(OP,0) 	     \
			H8300_GEN_TEST_BITOP_CONST(OP,1) 	     \
			H8300_GEN_TEST_BITOP_CONST(OP,2) 	     \
			H8300_GEN_TEST_BITOP_CONST(OP,3) 	     \
			H8300_GEN_TEST_BITOP_CONST(OP,4) 	     \
			H8300_GEN_TEST_BITOP_CONST(OP,5) 	     \
			H8300_GEN_TEST_BITOP_CONST(OP,6) 	     \
			H8300_GEN_TEST_BITOP_CONST(OP,7) 	     \
		}						     \
	} else {						     \
		__asm__("btst %w4,@%3\n\t"			     \
			OP " %w4,@%3\n\t"			     \
			"beq 1f\n\t"				     \
			"inc.l #1,%0\n"				     \
			"1:"					     \
			: "=r"(retval),"=m"(*b_addr)		     \
			: "0" (retval),"r" (b_addr),"r"(nr)	     \
			: "memory");				     \
	}							     \
	return retval;						     \
}

H8300_GEN_TEST_BITOP(test_and_set_bit,	 "bset")
H8300_GEN_TEST_BITOP(test_and_clear_bit, "bclr")
H8300_GEN_TEST_BITOP(test_and_change_bit,"bnot")
#undef H8300_GEN_TEST_BITOP_CONST
#undef H8300_GEN_TEST_BITOP_CONST_INT
#undef H8300_GEN_TEST_BITOP

#include <asm-generic/bitops/ffs.h>

static __inline__ unsigned long __ffs(unsigned long word)
{
	unsigned long result;

	result = -1;
	__asm__("1:\n\t"
		"shlr.l %2\n\t"
		"adds #1,%0\n\t"
		"bcc 1b"
		: "=r" (result)
		: "0"(result),"r"(word));
	return result;
}

#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/ext2-non-atomic.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/minix.h>

#endif /* __KERNEL__ */

#include <asm-generic/bitops/fls.h>
#include <asm-generic/bitops/fls64.h>

#endif /* _H8300_BITOPS_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _H8300_BITOPS_H
	2	#define _H8300_BITOPS_H
	3
	4	/*
	5	* Copyright 1992, Linus Torvalds.
	6	* Copyright 2002, Yoshinori Sato
	7	*/
	8
1da177e4	9	#include <linux/compiler.h>
1da177e4 LT	10	#include <asm/system.h>
	11
	12	#ifdef __KERNEL__
0624517d JS	13
	14	#ifndef _LINUX_BITOPS_H
	15	#error only <linux/bitops.h> can be included directly
	16	#endif
	17
1da177e4 LT	18	/*
	19	* Function prototypes to keep gcc -Wall happy
	20	*/
	21
	22	/*
	23	* ffz = Find First Zero in word. Undefined if no zero exists,
	24	* so code should check against ~0UL first..
	25	*/
	26	static __inline__ unsigned long ffz(unsigned long word)
	27	{
	28	unsigned long result;
	29
	30	result = -1;
	31	__asm__("1:\n\t"
	32	"shlr.l %2\n\t"
	33	"adds #1,%0\n\t"
	34	"bcs 1b"
	35	: "=r" (result)
	36	: "0" (result),"r" (word));
	37	return result;
	38	}
	39
	40	#define H8300_GEN_BITOP_CONST(OP,BIT) \
	41	case BIT: \
	42	__asm__(OP " #" #BIT ",@%0"::"r"(b_addr):"memory"); \
	43	break;
	44
	45	#define H8300_GEN_BITOP(FNAME,OP) \
	46	static __inline__ void FNAME(int nr, volatile unsigned long* addr) \
	47	{ \
	48	volatile unsigned char *b_addr; \
	49	b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3); \
	50	if (__builtin_constant_p(nr)) { \
	51	switch(nr & 7) { \
	52	H8300_GEN_BITOP_CONST(OP,0) \
	53	H8300_GEN_BITOP_CONST(OP,1) \
	54	H8300_GEN_BITOP_CONST(OP,2) \
	55	H8300_GEN_BITOP_CONST(OP,3) \
	56	H8300_GEN_BITOP_CONST(OP,4) \
	57	H8300_GEN_BITOP_CONST(OP,5) \
	58	H8300_GEN_BITOP_CONST(OP,6) \
	59	H8300_GEN_BITOP_CONST(OP,7) \
	60	} \
	61	} else { \
	62	__asm__(OP " %w0,@%1"::"r"(nr),"r"(b_addr):"memory"); \
	63	} \
	64	}
	65
	66	/*
	67	* clear_bit() doesn't provide any barrier for the compiler.
	68	*/
	69	#define smp_mb__before_clear_bit() barrier()
	70	#define smp_mb__after_clear_bit() barrier()
	71
	72	H8300_GEN_BITOP(set_bit ,"bset")
	73	H8300_GEN_BITOP(clear_bit ,"bclr")
	74	H8300_GEN_BITOP(change_bit,"bnot")
	75	#define __set_bit(nr,addr) set_bit((nr),(addr))
	76	#define __clear_bit(nr,addr) clear_bit((nr),(addr))
	77	#define __change_bit(nr,addr) change_bit((nr),(addr))
	78
	79	#undef H8300_GEN_BITOP
	80	#undef H8300_GEN_BITOP_CONST
	81
82	static __inline__ int test_bit(int nr, const unsigned long* addr)
83	{
84	return (((volatile unsigned char )addr +
85	((nr >> 3) ^ 3)) & (1UL << (nr & 7))) != 0;
86	}
87
88	#define __test_bit(nr, addr) test_bit(nr, addr)
89
90	#define H8300_GEN_TEST_BITOP_CONST_INT(OP,BIT) \
91	case BIT: \
92	__asm__("stc ccr,%w1\n\t" \
93	"orc #0x80,ccr\n\t" \
94	"bld #" #BIT ",@%4\n\t" \
95	OP " #" #BIT ",@%4\n\t" \
96	"rotxl.l %0\n\t" \
97	"ldc %w1,ccr" \
98	: "=r"(retval),"=&r"(ccrsave),"=m"(*b_addr) \
99	: "0" (retval),"r" (b_addr) \
100	: "memory"); \
101	break;
102
103	#define H8300_GEN_TEST_BITOP_CONST(OP,BIT) \
104	case BIT: \
105	__asm__("bld #" #BIT ",@%3\n\t" \
106	OP " #" #BIT ",@%3\n\t" \
107	"rotxl.l %0\n\t" \
108	: "=r"(retval),"=m"(*b_addr) \
109	: "0" (retval),"r" (b_addr) \
110	: "memory"); \
111	break;
112
113	#define H8300_GEN_TEST_BITOP(FNNAME,OP) \
114	static __inline__ int FNNAME(int nr, volatile void * addr) \
115	{ \
116	int retval = 0; \
117	char ccrsave; \
118	volatile unsigned char *b_addr; \
119	b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3); \
120	if (__builtin_constant_p(nr)) { \
121	switch(nr & 7) { \
122	H8300_GEN_TEST_BITOP_CONST_INT(OP,0) \
123	H8300_GEN_TEST_BITOP_CONST_INT(OP,1) \
124	H8300_GEN_TEST_BITOP_CONST_INT(OP,2) \
125	H8300_GEN_TEST_BITOP_CONST_INT(OP,3) \
126	H8300_GEN_TEST_BITOP_CONST_INT(OP,4) \
127	H8300_GEN_TEST_BITOP_CONST_INT(OP,5) \
128	H8300_GEN_TEST_BITOP_CONST_INT(OP,6) \
129	H8300_GEN_TEST_BITOP_CONST_INT(OP,7) \
130	} \
131	} else { \
132	__asm__("stc ccr,%w1\n\t" \
133	"orc #0x80,ccr\n\t" \
134	"btst %w5,@%4\n\t" \
135	OP " %w5,@%4\n\t" \
136	"beq 1f\n\t" \
137	"inc.l #1,%0\n" \
138	"1:\n\t" \
139	"ldc %w1,ccr" \
140	: "=r"(retval),"=&r"(ccrsave),"=m"(*b_addr) \
141	: "0" (retval),"r" (b_addr),"r"(nr) \
142	: "memory"); \
143	} \
144	return retval; \
145	} \
146	\
147	static __inline__ int __ ## FNNAME(int nr, volatile void * addr) \
148	{ \
149	int retval = 0; \
150	volatile unsigned char *b_addr; \
151	b_addr = (volatile unsigned char *)addr + ((nr >> 3) ^ 3); \
152	if (__builtin_constant_p(nr)) { \
153	switch(nr & 7) { \
154	H8300_GEN_TEST_BITOP_CONST(OP,0) \
155	H8300_GEN_TEST_BITOP_CONST(OP,1) \
156	H8300_GEN_TEST_BITOP_CONST(OP,2) \
157	H8300_GEN_TEST_BITOP_CONST(OP,3) \
158	H8300_GEN_TEST_BITOP_CONST(OP,4) \
159	H8300_GEN_TEST_BITOP_CONST(OP,5) \
160	H8300_GEN_TEST_BITOP_CONST(OP,6) \
161	H8300_GEN_TEST_BITOP_CONST(OP,7) \
162	} \
163	} else { \
164	__asm__("btst %w4,@%3\n\t" \
165	OP " %w4,@%3\n\t" \
166	"beq 1f\n\t" \
167	"inc.l #1,%0\n" \
168	"1:" \
169	: "=r"(retval),"=m"(*b_addr) \
170	: "0" (retval),"r" (b_addr),"r"(nr) \
171	: "memory"); \
172	} \
173	return retval; \
174	}
175
176	H8300_GEN_TEST_BITOP(test_and_set_bit, "bset")
177	H8300_GEN_TEST_BITOP(test_and_clear_bit, "bclr")
178	H8300_GEN_TEST_BITOP(test_and_change_bit,"bnot")
179	#undef H8300_GEN_TEST_BITOP_CONST
180	#undef H8300_GEN_TEST_BITOP_CONST_INT
181	#undef H8300_GEN_TEST_BITOP
182
f6e0213f	183	#include <asm-generic/bitops/ffs.h>
1da177e4 LT	184
	185	static __inline__ unsigned long __ffs(unsigned long word)
	186	{
	187	unsigned long result;
	188
	189	result = -1;
	190	__asm__("1:\n\t"
	191	"shlr.l %2\n\t"
	192	"adds #1,%0\n\t"
	193	"bcc 1b"
	194	: "=r" (result)
	195	: "0"(result),"r"(word));
	196	return result;
	197	}
	198
f6e0213f AM	199	#include <asm-generic/bitops/find.h>
	200	#include <asm-generic/bitops/sched.h>
	201	#include <asm-generic/bitops/hweight.h>
26333576	202	#include <asm-generic/bitops/lock.h>
f6e0213f AM	203	#include <asm-generic/bitops/ext2-non-atomic.h>
	204	#include <asm-generic/bitops/ext2-atomic.h>
	205	#include <asm-generic/bitops/minix.h>
1da177e4 LT	206
	207	#endif /* __KERNEL__ */
	208
f6e0213f AM	209	#include <asm-generic/bitops/fls.h>
f6e0213f AM	210	#include <asm-generic/bitops/fls64.h>
1da177e4 LT	211
1da177e4 LT	212	#endif /* _H8300_BITOPS_H */