1 /* $FreeBSD$ */ 2 /* $NetBSD: frame.h,v 1.2 1999/01/10 10:13:15 tsubai Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 6 * Copyright (C) 1995, 1996 TooLs GmbH. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by TooLs GmbH. 20 * 4. The name of TooLs GmbH may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 #ifndef _MACHINE_FRAME_H_ 35 #define _MACHINE_FRAME_H_ 36 37 #include <machine/types.h> 38 39 /* 40 * We have to save all registers on every trap, because 41 * 1. user could attach this process every time 42 * 2. we must be able to restore all user registers in case of fork 43 * Actually, we do not save the fp registers on trap, since 44 * these are not used by the kernel. They are saved only when switching 45 * between processes using the FPU. 46 * 47 * Change ordering to cluster together these register_t's. XXX 48 */ 49 struct trapframe { 50 register_t fixreg[32]; 51 register_t lr; 52 int cr; 53 int xer; 54 register_t ctr; 55 register_t srr0; 56 register_t srr1; 57 register_t dar; /* dar & dsisr are only filled on a DSI trap */ 58 int dsisr; 59 int exc; 60 }; 61 /* 62 * This is to ensure alignment of the stackpointer 63 */ 64 #define FRAMELEN roundup(sizeof(struct trapframe) + 8, 16) 65 #define trapframe(p) ((struct trapframe *)((char *)(p)->p_addr + USPACE - FRAMELEN + 8)) 66 67 struct switchframe { 68 register_t sp; 69 int fill; 70 int user_sr; 71 int cr; 72 register_t fixreg2; 73 register_t fixreg[19]; /* R13-R31 */ 74 }; 75 76 struct clockframe { 77 register_t srr1; 78 register_t srr0; 79 int pri; 80 int depth; 81 }; 82 83 /* 84 * Call frame for PowerPC used during fork. 85 */ 86 struct callframe { 87 register_t sp; 88 register_t lr; 89 register_t r30; 90 register_t r31; 91 }; 92 93 #endif /* _MACHINE_FRAME_H_ */ 94