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Length: 1283 (0x503)
Types: TextFile
Notes: UNIX file
Names: »gate.h«
└─⟦a6ab2eb36⟧ Bits:30004042/kconfig3.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦a6ab2eb36⟧ UNIX Filesystem
└─⟦this⟧ »kc/new/usr/include/sys/gate.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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */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 "@(#)gate.h 1.3"
/*
* Call/Interrupt/Trap Gate table descriptions
*/
struct gate {
unsigned short g_looff; /* low word of offset */
unsigned short g_sel; /* selector */
unsigned char g_wcount; /* word count */
unsigned char g_type; /* type of gate and access rights */
unsigned short g_hioff; /* high word of the offset */
};
/* access rights field for gates */
#define GATE_UACC 0xE0 /* present and dpl = 3 */
#define GATE_KACC 0x80 /* present and dpl = 0 */
#define GATE_386INT 0xE /* 386 int gate */
#define GATE_386TRP 0xF /* 386 trap gate */
#define GATE_TSS 0x5 /* TSS gate */
/* make an interrupt gate */
#define MKINTG(rtn) {(short)rtn&0xFFFF, (short)KCS_SEL, (char)0, \
(char)(GATE_KACC|GATE_386INT), (short)((rtn&0xFFFF0000)>>16) }
#define MKKTRPG(rtn) {(short)rtn&0xFFFF, (short)KCS_SEL, (char)0, \
(char)(GATE_KACC|GATE_386TRP), (short)((rtn&0xFFFF0000)>>16) }
#define MKUTRPG(rtn) {(short)rtn&0xFFFF, (short)KCS_SEL, (char)0, \
(char)(GATE_UACC|GATE_386TRP), (short)((rtn&0xFFFF0000)>>16) }