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Length: 1781 (0x6f5)
Types: TextFile
Notes: UNIX file
Names: »hetero.h«
└─⟦a6ab2eb36⟧ Bits:30004042/kconfig3.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦a6ab2eb36⟧ UNIX Filesystem
└─⟦this⟧ »kc/new/usr/include/sys/hetero.h«
/* Copyright (c) 1984 AT&T */ /* All Rights Reserved */ /* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */ /* The copyright notice above does not evidence any */ /* actual or intended publication of such source code. */ #ident "@(#)hetero.h 1.4" /* * Define machine attributes for heterogeneity. * * Machine attribute consists of three components - * byte ordering, alignment, and data unit size. * The machine attributes are defined in a byte (8 bits), * the lower 2 bits are used to define the byte ordering, * the middle 3 bits are used to define the alignment, * the higher 3 bits are used to define the data unit size. * * * BYTE_ORDER 0x01 3B, IBM byte ordering * 0x02 VAX byte ordering * ALIGNMENT 0x04 word aligned (4 bytes boundary) * 0x08 half-word aligned (2 bytes boundary) * 0x0c byte aligned * UNIT_SIZE 0x20 4 bytes integer, 2 bytes short, 4 bytes pointer * 0x40 2 bytes integer, 2 bytes short, 2 bytes pointer */ /* * Define masks for machine attributes */ #define BYTE_MASK 0x03 #define ALIGN_MASK 0x1c #define UNIT_MASK 0xe0 /* * Define what need to be converted - header or data parts */ #define ALL_CONV 0 /* convert both header and data parts */ #define DATA_CONV 1 /* convert data part */ #define NO_CONV 2 /* no conversion needed */ #ifdef 3b2 /* * Define machine attributes for 3B */ #define BYTE_ORDER 0x01 #define ALIGNMENT 0x04 #define UNIT_SIZE 0x20 #endif #ifdef i286 /* * Define machine attributes for Intel 286 */ #define BYTE_ORDER 0x02 #define ALIGNMENT 0x08 #define UNIT_SIZE 0x40 #endif #ifdef i386 /* * Define machine attributes for Intel 386 */ #define BYTE_ORDER 0x02 #define ALIGNMENT 0x04 #define UNIT_SIZE 0x20 #endif #define MACHTYPE BYTE_ORDER | ALIGNMENT | UNIT_SIZE