Message

Reply | Reply all

Date Prev | Date Next | Thread Prev | Thread Next Date Index | Thread Index

From: cvs at opencores.org<cvs@o...>
Date: Tue Dec 20 12:35:33 CET 2005
Subject: [cvs-checkins] MODIFIED: or1k ...
Date: 00/05/12 20:12:35

Added: or1k/rc203soc/sw/uClinux/include/asm-generic bitops.h
unaligned.h
Log:
First Import of RC20x uClinux


Revision Changes Path
1.1 or1k/rc203soc/sw/uClinux/include/asm-generic/bitops.h

http://www.opencores.org/cvsweb.shtml/or1k/rc203soc/sw/uClinux/include/asm-generic/bitops.h?rev=1.1&content-type=text/x-cvsweb-markup

Index: bitops.h
===================================================================
#ifndef _ASM_GENERIC_BITOPS_H_
#define _ASM_GENERIC_BITOPS_H_

/*
* For the benefit of those who are trying to port Linux to another
* architecture, here are some C-language equivalents. You should
* recode these in the native assembly language, if at all possible.
* To guarantee atomicity, these routines call cli() and sti() to
* disable interrupts while they operate. (You have to provide inline
* routines to cli() and sti().)
*
* Also note, these routines assume that you have 32 bit integers.
* You will have to change this if you are trying to port Linux to the
* Alpha architecture or to a Cray. :-)
*
* C language equivalents written by Theodore Ts'o, 9/26/92
*/

extern __inline__ int set_bit(int nr,int * addr)
{
int mask, retval;

addr += nr >> 5;
mask = 1 << (nr & 0x1f);
cli();
retval = (mask & *addr) != 0;
*addr |= mask;
sti();
return retval;
}

extern __inline__ int clear_bit(int nr, int * addr)
{
int mask, retval;

addr += nr >> 5;
mask = 1 << (nr & 0x1f);
cli();
retval = (mask & *addr) != 0;
*addr &= ~mask;
sti();
return retval;
}

extern __inline__ int test_bit(int nr, int * addr)
{
int mask;

addr += nr >> 5;
mask = 1 << (nr & 0x1f);
return ((mask & *addr) != 0);
}
#endif /* _ASM_GENERIC_BITOPS_H */



1.1 or1k/rc203soc/sw/uClinux/include/asm-generic/unaligned.h

http://www.opencores.org/cvsweb.shtml/or1k/rc203soc/sw/uClinux/include/asm-generic/unaligned.h?rev=1.1&content-type=text/x-cvsweb-markup

Index: unaligned.h
===================================================================
#ifndef _ASM_GENERIC_UNALIGNED_H_
#define _ASM_GENERIC_UNALIGNED_H_

/*
* For the benefit of those who are trying to port Linux to another
* architecture, here are some C-language equivalents.
*/

#include <asm/string.h>


#define get_unaligned(ptr) \
({ __typeof__(*(ptr)) __tmp; memcpy(&__tmp, (ptr), sizeof(*(ptr))); __tmp; })

#define put_unaligned(val, ptr) \
({ __typeof__(*(ptr)) __tmp = (val); \
memcpy((ptr), &__tmp, sizeof(*(ptr))); \
(void)0; })

#endif /* _ASM_GENERIC_UNALIGNED_H */