1 /* 2 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 3 * Copyright (C) 1995, 1996 TooLs GmbH. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by TooLs GmbH. 17 * 4. The name of TooLs GmbH may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $NetBSD: frame.h,v 1.2 1999/01/10 10:13:15 tsubai Exp $ 32 * $FreeBSD$ 33 */ 34 35 #ifndef _MACHINE_FRAME_H_ 36 #define _MACHINE_FRAME_H_ 37 38 #include <sys/types.h> 39 40 /* 41 * We have to save all registers on every trap, because 42 * 1. user could attach this process every time 43 * 2. we must be able to restore all user registers in case of fork 44 * Actually, we do not save the fp registers on trap, since 45 * these are not used by the kernel. They are saved only when switching 46 * between processes using the FPU. 47 * 48 * Change ordering to cluster together these register_t's. XXX 49 */ 50 struct trapframe { 51 register_t fixreg[32]; 52 register_t lr; 53 int cr; 54 int xer; 55 register_t ctr; 56 register_t srr0; 57 register_t srr1; 58 register_t dar; /* dar & dsisr are only filled on a DSI trap */ 59 int dsisr; 60 int exc; 61 }; 62 /* 63 * This is to ensure alignment of the stackpointer 64 */ 65 #define FRAMELEN roundup(sizeof(struct trapframe) + 8, 16) 66 #define trapframe(td) ((td)->td_frame) 67 68 struct switchframe { 69 register_t sp; 70 register_t fill; 71 register_t user_sr; 72 register_t cr; 73 register_t fixreg2; 74 register_t fixreg[19]; /* R13-R31 */ 75 }; 76 77 struct clockframe { 78 register_t srr1; 79 register_t srr0; 80 int pri; 81 int depth; 82 }; 83 84 /* 85 * Call frame for PowerPC used during fork. 86 */ 87 struct callframe { 88 register_t cf_dummy_fp; /* dummy frame pointer */ 89 register_t cf_lr; /* space for link register save */ 90 register_t cf_func; 91 register_t cf_arg0; 92 register_t cf_arg1; 93 }; 94 95 #define IFRAMELEN sizeof(struct intrframe) 96 struct intrframe { 97 register_t r1; /* 0 */ 98 register_t _pad4; /* 4 */ 99 /* 100 * The next 4 fields are "clockframe" 101 */ 102 register_t srr1; /* 8 */ 103 register_t srr0; /* 12 */ 104 int pri; /* 16 */ 105 int intr_depth; /* 20 */ 106 register_t vrsave; /* 24 */ 107 register_t ctr; /* 28 */ 108 register_t xer; /* 32 */ 109 register_t cr; /* 36 */ 110 register_t lr; /* 40 */ 111 register_t r12; /* 44 */ 112 register_t r11; /* 48 */ 113 register_t r10; /* 52 */ 114 register_t r9; /* 56 */ 115 register_t r8; /* 60 */ 116 register_t r7; /* 64 */ 117 register_t r6; /* 68 */ 118 register_t r5; /* 72 */ 119 register_t r4; /* 76 */ 120 register_t r3; /* 80 */ 121 register_t r0; /* 84 */ 122 }; 123 124 #define SPFRAMELEN sizeof(struct spillframe) 125 struct spillframe { 126 register_t r1; /* 0 */ 127 register_t _pad4; /* 4 */ 128 register_t r12; /* 8 */ 129 register_t r11; /* 12 */ 130 register_t r10; /* 16 */ 131 register_t r9; /* 20 */ 132 register_t r8; /* 24 */ 133 register_t r7; /* 28 */ 134 register_t r6; /* 32 */ 135 register_t r5; /* 36 */ 136 register_t r4; /* 40 */ 137 register_t r3; /* 44 */ 138 register_t r0; /* 48 */ 139 }; 140 141 /* Definitions for syscalls */ 142 #define FIRSTARG 3 /* first arg in reg 3 */ 143 #define NARGREG 8 /* 8 args in regs */ 144 #define MOREARGS(sp) ((caddr_t)((int)(sp) + 8)) /* more args go here */ 145 146 #endif /* _MACHINE_FRAME_H_ */ 147