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/* $OpenBSD: pcb.h,v 1.3 2006/11/18 22:49:40 miod Exp $ */
/*
* Copyright (c) 1996 Nivas Madhur
* Mach Operating System
* Copyright (c) 1993-1992 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON AND OMRON ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON AND OMRON DISCLAIM ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* Motorola 88100 pcb definitions
*
*/
/*
*/
#ifndef _M88K_PCB_H_
#define _M88K_PCB_H_
#include <machine/reg.h>
/*
* Our PCB is the regular PCB+Save area for kernel frame.
* Upon entering kernel mode from user land, save the user context
* in the saved_state area - this is passed as the exception frame.
* On a context switch, only registers that need to be saved by the
* C calling convention and few other regs (pc, psr etc) are saved
* in the kernel_state part of the PCB. Typically, trap frames are
* saved on the stack (by low level handlers or by hardware) but,
* we just decided to do it in the PCB.
*/
struct m88100_pcb {
unsigned pcb_pc; /* address to return */
unsigned :32;
unsigned pcb_r14;
unsigned pcb_r15;
unsigned pcb_r16;
unsigned pcb_r17;
unsigned pcb_r18;
unsigned pcb_r19;
unsigned pcb_r20;
unsigned pcb_r21;
unsigned pcb_r22;
unsigned pcb_r23;
unsigned pcb_r24;
unsigned pcb_r25;
unsigned pcb_r26;
unsigned pcb_r27;
unsigned pcb_r28;
unsigned pcb_r29;
unsigned pcb_r30;
unsigned pcb_sp; /* kernel stack pointer */
/* floating-point state */
unsigned pcb_fcr62;
unsigned pcb_fcr63;
};
struct trapframe {
struct reg tf_regs;
register_t tf_vector; /* exception vector number */
register_t tf_mask; /* interrupt mask level */
register_t tf_mode; /* interrupt mode */
register_t tf_scratch1; /* reserved for use by locore */
register_t tf_ipfsr; /* P BUS status */
register_t tf_dpfsr; /* P BUS status */
void *tf_cpu; /* cpu_info pointer */
};
#define tf_r tf_regs.r
#define tf_sp tf_regs.r[31]
#define tf_epsr tf_regs.epsr
#define tf_fpsr tf_regs.fpsr
#define tf_fpcr tf_regs.fpcr
#define tf_sxip tf_regs.sxip
#define tf_snip tf_regs.snip
#define tf_sfip tf_regs.sfip
#define tf_exip tf_regs.sxip
#define tf_enip tf_regs.snip
#define tf_ssbr tf_regs.ssbr
#define tf_dmt0 tf_regs.dmt0
#define tf_dmd0 tf_regs.dmd0
#define tf_dma0 tf_regs.dma0
#define tf_dmt1 tf_regs.dmt1
#define tf_dmd1 tf_regs.dmd1
#define tf_dma1 tf_regs.dma1
#define tf_dmt2 tf_regs.dmt2
#define tf_dmd2 tf_regs.dmd2
#define tf_dma2 tf_regs.dma2
#define tf_duap tf_regs.ssbr
#define tf_dsr tf_regs.dmt0
#define tf_dlar tf_regs.dmd0
#define tf_dpar tf_regs.dma0
#define tf_isr tf_regs.dmt1
#define tf_ilar tf_regs.dmd1
#define tf_ipar tf_regs.dma1
#define tf_isap tf_regs.dmt2
#define tf_dsap tf_regs.dmd2
#define tf_iuap tf_regs.dma2
#define tf_fpecr tf_regs.fpecr
#define tf_fphs1 tf_regs.fphs1
#define tf_fpls1 tf_regs.fpls1
#define tf_fphs2 tf_regs.fphs2
#define tf_fpls2 tf_regs.fpls2
#define tf_fppt tf_regs.fppt
#define tf_fprh tf_regs.fprh
#define tf_fprl tf_regs.fprl
#define tf_fpit tf_regs.fpit
struct pcb
{
struct m88100_pcb kernel_state;
struct trapframe user_state;
int pcb_onfault;
};
/*
* Location of saved user registers for the proc.
*/
#define USER_REGS(p) \
(((struct reg *)(&((p)->p_addr->u_pcb.user_state))))
/*
* The pcb is augmented with machine-dependent additional data for
* core dumps. Note that the trapframe here is a copy of the one
* from the top of the kernel stack (included here so that the kernel
* stack itself need not be dumped).
*/
struct md_coredump {
struct trapframe md_tf;
};
#endif /* _M88K_PCB_H_ */
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