cfad47cfa3/tads2/h_ix86.h

Show revision log
 
4b825dc642cb6eb9a060e54bf8d69288fbee4904cfad47cfa334b206c65f22086bcc5d63e6f70944
1
/* $Header: d:/cvsroot/tads/TADS2/H_IX86.H,v 1.2 1999/05/17 02:52:12 MJRoberts Exp $ */



2



3
/* 



4
 *   Copyright (c) 1998, 2002 Michael J. Roberts.  All Rights Reserved.



5
 *   



6
 *   Please see the accompanying license file, LICENSE.TXT, for information



7
 *   on using and copying this software.  



8
 */



9
/*



10
Name



11
  h_ix86.h - hardware definitions for Intel x86.



12
Function



13
  These definitions are for 16-bit and 32-bit Intel CPUs.  Note that these



14
  probably will NOT work on 64-bit Intel hardware, because we assume that



15
  the largest type is 32 bits.



16
Notes



17



18
Modified



19
  10/17/98 MJRoberts  - Creation



20
*/



21



22
#ifndef H_IX86_H



23
#define H_IX86_H



24



25
/* round a size to worst-case alignment boundary */



26
#define osrndsz(s) (((s)+3) & ~3)



27



28
/* round a pointer to worst-case alignment boundary */



29
#define osrndpt(p) ((uchar *)((((ulong)(p)) + 3) & ~3))



30



31
/* read unaligned portable unsigned 2-byte value, returning int */



32
#define osrp2(p) ((int)*(unsigned short *)(p))



33



34
/* read unaligned portable signed 2-byte value, returning int */



35
#define osrp2s(p) ((int)*(short *)(p))



36



37
/* write int to unaligned portable 2-byte value */



38
#define oswp2(p, i) (*(unsigned short *)(p)=(unsigned short)(i))



39



40
/* read unaligned portable 4-byte value, returning long */



41
#define osrp4(p) (*(long *)(p))



42



43
/* write long to unaligned portable 4-byte value */



44
#define oswp4(p, l) (*(long *)(p)=(l))



45



46



47
#endif /* H_IX86_H */



48