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Diffstat (limited to 'c/src/exec/score/inline/rtems/score/address.inl')
-rw-r--r-- | c/src/exec/score/inline/rtems/score/address.inl | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/c/src/exec/score/inline/rtems/score/address.inl b/c/src/exec/score/inline/rtems/score/address.inl new file mode 100644 index 0000000000..e30ca616fa --- /dev/null +++ b/c/src/exec/score/inline/rtems/score/address.inl @@ -0,0 +1,120 @@ +/* inline/address.inl + * + * This include file contains the bodies of the routines + * about addresses which are inlined. + * + * COPYRIGHT (c) 1989-1997. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may in + * the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#ifndef __INLINE_ADDRESSES_inl +#define __INLINE_ADDRESSES_inl + +/*PAGE + * + * _Addresses_Add_offset + * + * DESCRIPTION: + * + * This function is used to add an offset to a base address. + * It returns the resulting address. This address is typically + * converted to an access type before being used further. + */ + +RTEMS_INLINE_ROUTINE void *_Addresses_Add_offset ( + void *base, + unsigned32 offset +) +{ + return (void *)((char *)base + offset); +} + +/*PAGE + * + * _Addresses_Subtract_offset + * + * DESCRIPTION: + * + * This function is used to subtract an offset from a base + * address. It returns the resulting address. This address is + * typically converted to an access type before being used further. + */ + +RTEMS_INLINE_ROUTINE void *_Addresses_Subtract_offset ( + void *base, + unsigned32 offset +) +{ + return (void *)((char *)base - offset); +} + +/*PAGE + * + * _Addresses_Subtract + * + * DESCRIPTION: + * + * This function is used to subtract two addresses. It returns the + * resulting offset. + * + * NOTE: The cast of an address to an unsigned32 makes this code + * dependent on an addresses being thirty two bits. + */ + +RTEMS_INLINE_ROUTINE unsigned32 _Addresses_Subtract ( + void *left, + void *right +) +{ + return ((char *) left - (char *) right); +} + +/*PAGE + * + * _Addresses_Is_aligned + * + * DESCRIPTION: + * + * This function returns TRUE if the given address is correctly + * aligned for this processor and FALSE otherwise. Proper alignment + * is based on correctness and efficiency. + */ + +RTEMS_INLINE_ROUTINE boolean _Addresses_Is_aligned ( + void *address +) +{ + return ( ( (unsigned32)address % CPU_ALIGNMENT ) == 0 ); +} + +/*PAGE + * + * _Addresses_Is_in_range + * + * DESCRIPTION: + * + * This function returns TRUE if the given address is within the + * memory range specified and FALSE otherwise. base is the address + * of the first byte in the memory range and limit is the address + * of the last byte in the memory range. The base address is + * assumed to be lower than the limit address. + */ + +RTEMS_INLINE_ROUTINE boolean _Addresses_Is_in_range ( + void *address, + void *base, + void *limit +) +{ + return ( address >= base && address <= limit ); +} + +#endif +/* end of include file */ |