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Merge ALIGN changes from alpha code.

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This commit is contained in:
Doug Rabson 2000-12-30 13:06:01 +00:00
parent c8cf198085
commit 48dd241687
1 changed files with 24 additions and 3 deletions
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27
sys/ia64/include/param.h
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@ -46,6 +46,27 @@
/*
* Machine dependent constants for the IA64.
*/
/*
* Round p (pointer or byte index) up to a correctly-aligned value for all
* data types (int, long, ...). The result is u_long and must be cast to
* any desired pointer type.
*
* ALIGNED_POINTER is a boolean macro that checks whether an address
* is valid to fetch data elements of type t from on this architecture.
* This does not reflect the optimal alignment, just the possibility
* (within reasonable limits).
*
*/
#ifndef _ALIGNBYTES
#define _ALIGNBYTES 7
#endif
#ifndef _ALIGN
#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES)
#endif
#ifndef _ALIGNED_POINTER
#define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
#endif
#ifndef _MACHINE
#define _MACHINE ia64
#endif
@ -83,9 +104,9 @@
* (within reasonable limits).
*
*/
#define ALIGNBYTES 7
#define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES)
#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
#define ALIGNBYTES _ALIGNBYTES
#define ALIGN(p) _ALIGN(p)
#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t)
#define PAGE_SIZE 4096 /* bytes/page */
#define PAGE_SHIFT 12