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