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/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*
* $NetBSD: pcb.h,v 1.4 2000/06/04 11:57:17 tsubai Exp $
*/
#ifndef _MACHINE_PCB_H_
#define _MACHINE_PCB_H_
#include <sys/endian.h>
#include <machine/setjmp.h>
#ifndef _STANDALONE
struct pcb {
register_t pcb_context[20]; /* non-volatile r12-r31 */
register_t pcb_cr; /* Condition register */
register_t pcb_sp; /* stack pointer */
register_t pcb_toc; /* toc pointer */
register_t pcb_lr; /* link register */
register_t pcb_dscr; /* dscr value */
register_t pcb_fscr;
register_t pcb_tar;
struct pmap *pcb_pm; /* pmap of our vmspace */
jmp_buf *pcb_onfault; /* For use during
copyin/copyout */
int pcb_flags;
#define PCB_FPU 0x1 /* Process uses FPU */
#define PCB_FPREGS 0x2 /* Process had FPU registers initialized */
#define PCB_VEC 0x4 /* Process uses Altivec */
#define PCB_VSX 0x8 /* Process had VSX initialized */
#define PCB_CDSCR 0x10 /* Process had Custom DSCR initialized */
#define PCB_HTM 0x20 /* Process had HTM initialized */
#define PCB_CFSCR 0x40 /* Process had FSCR updated */
#define PCB_KERN_FPU 0x80 /* Kernel is using FPU/Vector unit */
#define PCB_KERN_FPU_NOSAVE 0x100 /* FPU/Vec state not saved for kernel use */
#define PCB_VECREGS 0x200 /* Process had Altivec registers initialized */
struct fpu {
union {
#if _BYTE_ORDER == _BIG_ENDIAN
double fpr;
uint32_t vsr[4];
#else
uint32_t vsr[4];
struct {
double padding;
double fpr;
};
#endif
} fpr[32];
double fpscr; /* FPSCR stored as double for easier access */
} pcb_fpu; /* Floating point processor */
unsigned int pcb_fpcpu; /* which CPU had our FPU
stuff. */
struct vec {
uint32_t vr[32][4];
uint32_t spare[2];
uint32_t vrsave;
uint32_t vscr; /* aligned at vector element 3 */
} pcb_vec __aligned(16); /* Vector processor */
unsigned int pcb_veccpu; /* which CPU had our vector
stuff. */
struct htm {
uint64_t tfhar;
uint64_t texasr;
uint64_t tfiar;
} pcb_htm;
struct ebb {
uint64_t ebbhr;
uint64_t ebbrr;
uint64_t bescr;
} pcb_ebb;
struct lmon {
uint64_t lmrr;
uint64_t lmser;
} pcb_lm;
union {
struct {
vm_offset_t usr_segm; /* Base address */
register_t usr_vsid; /* USER_SR segment */
} aim;
struct {
register_t dbcr0;
} booke;
} pcb_cpu;
vm_offset_t pcb_lastill; /* Last illegal instruction */
};
#endif
#ifdef _KERNEL
struct trapframe;
#ifndef curpcb
extern struct pcb *curpcb;
#endif
extern struct pmap *curpm;
extern struct proc *fpuproc;
void makectx(struct trapframe *, struct pcb *);
void savectx(struct pcb *) __returns_twice;
#endif
#endif /* _MACHINE_PCB_H_ */
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