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32 results

bitops_32.h

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    • Sam Ravnborg's avatar
      a439fe51
      sparc, sparc64: use arch/sparc/include · a439fe51
      Sam Ravnborg authored
      
      The majority of this patch was created by the following script:
      
      ***
      ASM=arch/sparc/include/asm
      mkdir -p $ASM
      git mv include/asm-sparc64/ftrace.h $ASM
      git rm include/asm-sparc64/*
      git mv include/asm-sparc/* $ASM
      sed -ie 's/asm-sparc64/asm/g' $ASM/*
      sed -ie 's/asm-sparc/asm/g' $ASM/*
      ***
      
      The rest was an update of the top-level Makefile to use sparc
      for header files when sparc64 is being build.
      And a small fixlet to pick up the correct unistd.h from
      sparc64 code.
      
      Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      a439fe51
      History
      sparc, sparc64: use arch/sparc/include
      Sam Ravnborg authored
      
      The majority of this patch was created by the following script:
      
      ***
      ASM=arch/sparc/include/asm
      mkdir -p $ASM
      git mv include/asm-sparc64/ftrace.h $ASM
      git rm include/asm-sparc64/*
      git mv include/asm-sparc/* $ASM
      sed -ie 's/asm-sparc64/asm/g' $ASM/*
      sed -ie 's/asm-sparc/asm/g' $ASM/*
      ***
      
      The rest was an update of the top-level Makefile to use sparc
      for header files when sparc64 is being build.
      And a small fixlet to pick up the correct unistd.h from
      sparc64 code.
      
      Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
    bitops_32.h 2.88 KiB
    /*
     * 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__
    
    #ifndef _LINUX_BITOPS_H
    #error only <linux/bitops.h> can be included directly
    #endif
    
    extern unsigned long ___set_bit(unsigned long *addr, unsigned long mask);
    extern unsigned long ___clear_bit(unsigned long *addr, unsigned long mask);
    extern unsigned long ___change_bit(unsigned long *addr, unsigned long mask);
    
    /*
     * 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)
    {
    	unsigned long *ADDR, mask;
    
    	ADDR = ((unsigned long *) addr) + (nr >> 5);
    	mask = 1 << (nr & 31);
    
    	return ___set_bit(ADDR, mask) != 0;
    }
    
    static inline void set_bit(unsigned long nr, volatile unsigned long *addr)
    {
    	unsigned long *ADDR, mask;
    
    	ADDR = ((unsigned long *) addr) + (nr >> 5);
    	mask = 1 << (nr & 31);
    
    	(void) ___set_bit(ADDR, mask);
    }
    
    static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
    {
    	unsigned long *ADDR, mask;
    
    	ADDR = ((unsigned long *) addr) + (nr >> 5);
    	mask = 1 << (nr & 31);
    
    	return ___clear_bit(ADDR, mask) != 0;
    }
    
    static inline void clear_bit(unsigned long nr, volatile unsigned long *addr)
    {
    	unsigned long *ADDR, mask;
    
    	ADDR = ((unsigned long *) addr) + (nr >> 5);
    	mask = 1 << (nr & 31);
    
    	(void) ___clear_bit(ADDR, mask);
    }
    
    static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
    {
    	unsigned long *ADDR, mask;
    
    	ADDR = ((unsigned long *) addr) + (nr >> 5);
    	mask = 1 << (nr & 31);
    
    	return ___change_bit(ADDR, mask) != 0;
    }
    
    static inline void change_bit(unsigned long nr, volatile unsigned long *addr)
    {
    	unsigned long *ADDR, mask;
    
    	ADDR = ((unsigned long *) addr) + (nr >> 5);
    	mask = 1 << (nr & 31);
    
    	(void) ___change_bit(ADDR, mask);
    }
    
    #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/lock.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) */