1 /* $NetBSD: frame.h,v 1.1 1996/09/30 16:34:25 ws Exp $ */ 2 3 /* 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #ifndef _MACHINE_FRAME_H_ 34 #define _MACHINE_FRAME_H_ 35 36 #include <machine/types.h> 37 38 /* 39 * We have to save all registers on every trap, because 40 * 1. user could attach this process every time 41 * 2. we must be able to restore all user registers in case of fork 42 * Actually, we do not save the fp registers on trap, since 43 * these are not used by the kernel. They are saved only when switching 44 * between processes using the FPU. 45 * 46 * Change ordering to cluster together these register_t's. XXX 47 */ 48 struct trapframe { 49 register_t fixreg[32]; 50 register_t lr; 51 int cr; 52 int xer; 53 register_t ctr; 54 register_t srr0; 55 register_t srr1; 56 register_t dar; /* dar & dsisr are only filled on a DSI trap */ 57 int dsisr; 58 int exc; 59 }; 60 /* 61 * This is to ensure alignment of the stackpointer 62 */ 63 #define FRAMELEN roundup(sizeof(struct trapframe) + 8, 16) 64 #define trapframe(p) ((struct trapframe *)((void *)(p)->p_addr + USPACE - FRAMELEN + 8)) 65 66 struct switchframe { 67 register_t sp; 68 int fill; 69 int user_sr; 70 int cr; 71 register_t fixreg2; 72 register_t fixreg[19]; /* R13-R31 */ 73 }; 74 75 struct clockframe { 76 register_t srr1; 77 register_t srr0; 78 int pri; 79 int depth; 80 }; 81 82 /* 83 * Call frame for PowerPC used during fork. 84 */ 85 struct callframe { 86 register_t sp; 87 register_t lr; 88 register_t r30; 89 register_t r31; 90 }; 91 92 #endif /* _MACHINE_FRAME_H_ */ 93