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/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)pcb.h 5.10 (Berkeley) 5/12/91
* $FreeBSD$
*/
#ifndef _I386_PCB_H_
#define _I386_PCB_H_
/*
* Intel 386 process control block
*/
#ifndef _KERNEL
#include <machine/segments.h>
#endif
#include <machine/npx.h>
/*
* NB: The fields marked with (*) are used by kernel debuggers. Their
* ABI should be preserved.
*/
struct pcb {
int pcb_edi; /* (*) */
int pcb_esi; /* (*) */
int pcb_ebp; /* (*) */
int pcb_esp; /* (*) */
int pcb_ebx; /* (*) */
int pcb_eip; /* (*) */
struct segment_descriptor pcb_fsd;
struct segment_descriptor pcb_gsd;
int pcb_ds;
int pcb_es;
int pcb_fs;
int pcb_gs;
int pcb_ss;
int pcb_cr0;
int pcb_cr2;
int pcb_cr3;
int pcb_cr4;
int pcb_dr0;
int pcb_dr1;
int pcb_dr2;
int pcb_dr3;
int pcb_dr6;
int pcb_dr7;
struct region_descriptor pcb_gdt;
struct region_descriptor pcb_idt;
uint16_t pcb_ldt;
uint16_t pcb_tr;
u_int pcb_flags;
#define PCB_DBREGS 0x02 /* process using debug registers */
#define PCB_NPXINITDONE 0x08 /* fpu state is initialized */
#define PCB_VM86CALL 0x10 /* in vm86 call */
#define PCB_NPXUSERINITDONE 0x20 /* user fpu state is initialized */
#define PCB_KERNNPX 0x40 /* kernel uses npx */
uint16_t pcb_initial_npxcw;
caddr_t pcb_onfault; /* copyin/out fault recovery */
struct pcb_ext *pcb_ext; /* optional pcb extension */
int pcb_waspsl; /* unused padding for ABI and API compat */
u_long pcb_vm86[2]; /* vm86bios scratch space */
union savefpu *pcb_save;
uint32_t pcb_pad[10];
};
/* Per-CPU state saved during suspend and resume. */
struct susppcb {
struct pcb sp_pcb;
/* fpu context for suspend/resume */
void *sp_fpususpend;
};
#ifdef _KERNEL
struct trapframe;
void makectx(struct trapframe *, struct pcb *);
int savectx(struct pcb *) __returns_twice;
void resumectx(struct pcb *) __fastcall;
#endif
#endif /* _I386_PCB_H_ */
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