/* $Id: bitops.h,v 1.67 2001/11/19 18:36:34 davem Exp $ * bitops.h: Bit string operations on the Sparc. * * Copyright 1995 David S. Miller (davem@caip.rutgers.edu) * Copyright 1996 Eddie C. Dost   (ecd@skynet.be) * Copyright 2001 Anton Blanchard (anton@samba.org) */ #ifndef _SPARC_BITOPS_H#define _SPARC_BITOPS_H #include <linux/compiler.h>#include <asm/byteorder.h> #ifdef __KERNEL__ /* * Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0' * is in the highest of the four bytes and bit '31' is the high bit * within the first byte. Sparc is BIG-Endian. Unless noted otherwise * all bit-ops return 0 if bit was previously clear and != 0 otherwise. */static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr){	register unsigned long mask asm("g2");	register unsigned long *ADDR asm("g1");	register int tmp1 asm("g3");	register int tmp2 asm("g4");	register int tmp3 asm("g5");	register int tmp4 asm("g7"); 	ADDR = ((unsigned long *) addr) + (nr >> 5);	mask = 1 << (nr & 31); 	__asm__ __volatile__(	"mov	%%o7, %%g4\n\t"	"call	___set_bit\n\t"	" add	%%o7, 8, %%o7\n"	: "=&r" (mask), "=r" (tmp1), "=r" (tmp2), "=r" (tmp3), "=r" (tmp4)	: "0" (mask), "r" (ADDR)	: "memory", "cc"); 	return mask != 0;} static inline void set_bit(unsigned long nr, volatile unsigned long *addr){	register unsigned long mask asm("g2");	register unsigned long *ADDR asm("g1");	register int tmp1 asm("g3");	register int tmp2 asm("g4");	register int tmp3 asm("g5");	register int tmp4 asm("g7"); 	ADDR = ((unsigned long *) addr) + (nr >> 5);	mask = 1 << (nr & 31); 	__asm__ __volatile__(	"mov	%%o7, %%g4\n\t"	"call	___set_bit\n\t"	" add	%%o7, 8, %%o7\n"	: "=&r" (mask), "=r" (tmp1), "=r" (tmp2), "=r" (tmp3), "=r" (tmp4)	: "0" (mask), "r" (ADDR)	: "memory", "cc");} static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr){	register unsigned long mask asm("g2");	register unsigned long *ADDR asm("g1");	register int tmp1 asm("g3");	register int tmp2 asm("g4");	register int tmp3 asm("g5");	register int tmp4 asm("g7"); 	ADDR = ((unsigned long *) addr) + (nr >> 5);	mask = 1 << (nr & 31); 	__asm__ __volatile__(	"mov	%%o7, %%g4\n\t"	"call	___clear_bit\n\t"	" add	%%o7, 8, %%o7\n"	: "=&r" (mask), "=r" (tmp1), "=r" (tmp2), "=r" (tmp3), "=r" (tmp4)	: "0" (mask), "r" (ADDR)	: "memory", "cc"); 	return mask != 0;} static inline void clear_bit(unsigned long nr, volatile unsigned long *addr){	register unsigned long mask asm("g2");	register unsigned long *ADDR asm("g1");	register int tmp1 asm("g3");	register int tmp2 asm("g4");	register int tmp3 asm("g5");	register int tmp4 asm("g7"); 	ADDR = ((unsigned long *) addr) + (nr >> 5);	mask = 1 << (nr & 31); 	__asm__ __volatile__(	"mov	%%o7, %%g4\n\t"	"call	___clear_bit\n\t"	" add	%%o7, 8, %%o7\n"	: "=&r" (mask), "=r" (tmp1), "=r" (tmp2), "=r" (tmp3), "=r" (tmp4)	: "0" (mask), "r" (ADDR)	: "memory", "cc");} static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr){	register unsigned long mask asm("g2");	register unsigned long *ADDR asm("g1");	register int tmp1 asm("g3");	register int tmp2 asm("g4");	register int tmp3 asm("g5");	register int tmp4 asm("g7"); 	ADDR = ((unsigned long *) addr) + (nr >> 5);	mask = 1 << (nr & 31); 	__asm__ __volatile__(	"mov	%%o7, %%g4\n\t"	"call	___change_bit\n\t"	" add	%%o7, 8, %%o7\n"	: "=&r" (mask), "=r" (tmp1), "=r" (tmp2), "=r" (tmp3), "=r" (tmp4)	: "0" (mask), "r" (ADDR)	: "memory", "cc"); 	return mask != 0;} static inline void change_bit(unsigned long nr, volatile unsigned long *addr){	register unsigned long mask asm("g2");	register unsigned long *ADDR asm("g1");	register int tmp1 asm("g3");	register int tmp2 asm("g4");	register int tmp3 asm("g5");	register int tmp4 asm("g7"); 	ADDR = ((unsigned long *) addr) + (nr >> 5);	mask = 1 << (nr & 31); 	__asm__ __volatile__(	"mov	%%o7, %%g4\n\t"	"call	___change_bit\n\t"	" add	%%o7, 8, %%o7\n"	: "=&r" (mask), "=r" (tmp1), "=r" (tmp2), "=r" (tmp3), "=r" (tmp4)	: "0" (mask), "r" (ADDR)	: "memory", "cc");} #include <asm-generic/bitops/non-atomic.h> #define smp_mb__before_clear_bit()	do { } while(0)#define smp_mb__after_clear_bit()	do { } while(0) #include <asm-generic/bitops/ffz.h>#include <asm-generic/bitops/__ffs.h>#include <asm-generic/bitops/sched.h>#include <asm-generic/bitops/ffs.h>#include <asm-generic/bitops/fls.h>#include <asm-generic/bitops/fls64.h>#include <asm-generic/bitops/hweight.h>#include <asm-generic/bitops/find.h>#include <asm-generic/bitops/ext2-non-atomic.h>#include <asm-generic/bitops/ext2-atomic.h>#include <asm-generic/bitops/minix.h> #endif /* __KERNEL__ */ #endif /* defined(_SPARC_BITOPS_H) */