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/* $OpenBSD: frame.h,v 1.16 2004/04/07 18:24:19 mickey Exp $ */
/*
* Copyright (c) 1999-2004 Michael Shalayeff
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR OR HIS RELATIVES 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 MIND, 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.
*/
#ifndef _MACHINE_FRAME_H_
#define _MACHINE_FRAME_H_
/*
* Call frame definitions
*/
#define HPPA_FRAME_NARGS (12)
#define HPPA_FRAME_MAXARGS (HPPA_FRAME_NARGS * 4)
#define HPPA_FRAME_ARG(n) (-(32 + 4*((n) + 1)))
#define HPPA_FRAME_CARG(n,sp) ((register_t *)((sp) + HPPA_FRAME_ARG(n)))
#define HPPA_FRAME_SIZE (64)
#define HPPA_FRAME_PSP (-4)
#define HPPA_FRAME_EP (-8)
#define HPPA_FRAME_CLUP (-12)
#define HPPA_FRAME_SL (-16)
#define HPPA_FRAME_CRP (-20)
#define HPPA_FRAME_ERP (-24)
#define HPPA_FRAME_ESR4 (-28)
#define HPPA_FRAME_EDP (-32)
/*
* Macros to decode processor status word.
*/
#define HPPA_PC_PRIV_MASK 3
#define HPPA_PC_PRIV_KERN 0
#define HPPA_PC_PRIV_USER 3
#define USERMODE(pc) ((((register_t)pc) & HPPA_PC_PRIV_MASK) != HPPA_PC_PRIV_KERN)
#define KERNMODE(pc) (((register_t)pc) & ~HPPA_PC_PRIV_MASK)
#ifndef _LOCORE
/*
* the trapframe is divided into two parts:
* one is saved while we are in the physical mode (beginning of the trap),
* and should be kept as small as possible, since all the interrupts will
* be lost during this phase, also it must be 64-bytes aligned, per
* pa-risc stack conventions, and its dependencies in the code (;
* the other part is filled out when we are already in the virtual mode,
* are able to catch interrupts (they are kept pending) and perform
* other trap activities (like tlb misses).
*/
struct trapframe {
/* the `physical' part of the trapframe */
unsigned tf_t1; /* r22 */
unsigned tf_t2; /* r21 */
unsigned tf_sp; /* r30 */
unsigned tf_t3; /* r20 */
unsigned tf_iisq_head; /* cr17 */
unsigned tf_iisq_tail;
unsigned tf_iioq_head; /* cr18 */
unsigned tf_iioq_tail;
unsigned tf_eiem; /* cr15 */
unsigned tf_ipsw; /* cr22 */
unsigned tf_sr3;
unsigned tf_pidr1; /* cr8 */
unsigned tf_isr; /* cr20 */
unsigned tf_ior; /* cr21 */
unsigned tf_iir; /* cr19 */
unsigned tf_flags;
/* here starts the `virtual' part */
unsigned tf_sar; /* cr11 */
unsigned tf_r1;
unsigned tf_rp; /* r2 */
unsigned tf_r3; /* frame pointer when -g */
unsigned tf_r4;
unsigned tf_r5;
unsigned tf_r6;
unsigned tf_r7;
unsigned tf_r8;
unsigned tf_r9;
unsigned tf_r10;
unsigned tf_r11;
unsigned tf_r12;
unsigned tf_r13;
unsigned tf_r14;
unsigned tf_r15;
unsigned tf_r16;
unsigned tf_r17;
unsigned tf_r18;
unsigned tf_t4; /* r19 */
unsigned tf_arg3; /* r23 */
unsigned tf_arg2; /* r24 */
unsigned tf_arg1; /* r25 */
unsigned tf_arg0; /* r26 */
unsigned tf_dp; /* r27 */
unsigned tf_ret0; /* r28 */
unsigned tf_ret1; /* r29 */
unsigned tf_r31;
unsigned tf_sr0;
unsigned tf_sr1;
unsigned tf_sr2;
unsigned tf_sr4;
unsigned tf_sr5;
unsigned tf_sr6;
unsigned tf_sr7;
unsigned tf_pidr2; /* cr9 */
unsigned tf_pidr3; /* cr12 */
unsigned tf_pidr4; /* cr13 */
unsigned tf_rctr; /* cr0 */
unsigned tf_ccr; /* cr10 */
unsigned tf_eirr; /* cr23 - DDB */
unsigned tf_vtop; /* cr25 - DDB */
unsigned tf_cr28; /* - DDB */
unsigned tf_cr30; /* uaddr */
unsigned tf_pad[4]; /* pad to 256 bytes */
};
#endif /* !_LOCORE */
#endif /* !_MACHINE_FRAME_H_ */
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