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Add m68k_seg_offset() and m68k_page_offset() to complement m68k_trunc_seg() 

m68k_trunc_page(), respectively.  Motivated primarily by a desire for
code clarity and symmetry.
This commit is contained in:
scottr 1999-12-12 07:45:46 +00:00
parent 9ee576a049
commit 8759c4e95e
1 changed files with 4 additions and 2 deletions
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6
sys/arch/m68k/include/param.h
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@ -1,4 +1,4 @@
/* $NetBSD: param.h,v 1.6 1999/12/04 21:20:35 ragge Exp $ */
/* $NetBSD: param.h,v 1.7 1999/12/12 07:45:46 scottr Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@ -134,12 +134,14 @@
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
/*
* Mach derived conversion macros
* Mach-derived conversion macros
*/
#define m68k_round_seg(x) ((((unsigned)(x)) + SEGOFSET) & ~SEGOFSET)
#define m68k_trunc_seg(x) ((unsigned)(x) & ~SEGOFSET)
#define m68k_seg_offset(x) ((unsigned)(x) & SEGOFSET)
#define m68k_round_page(x) ((((unsigned)(x)) + PGOFSET) & ~PGOFSET)
#define m68k_trunc_page(x) ((unsigned)(x) & ~PGOFSET)
#define m68k_page_offset(x) ((unsigned)(x) & PGOFSET)
#define m68k_btop(x) ((unsigned)(x) >> PGSHIFT)
#define m68k_ptob(x) ((unsigned)(x) << PGSHIFT)