1 /* $OpenBSD: frame.h,v 1.5 2020/07/13 22:37:37 kettenis 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 34 #ifndef _MACHDEP_FRAME_H 35 #define _MACHDEP_FRAME_H 36 37 /* 38 * We have to save all registers on every trap, because 39 * 1. user could attach this process every time 40 * 2. we must be able to restore all user registers in case of fork 41 * Actually, we do not save the fp registers on trap, since 42 * these are not used by the kernel. They are saved only when switching 43 * between processes using the FPU. 44 * 45 */ 46 struct trapframe { 47 __register_t fixreg[32]; 48 __register_t lr; 49 __register_t cr; 50 __register_t xer; 51 __register_t ctr; 52 __register_t srr0; 53 __register_t srr1; 54 __register_t vrsave; 55 __register_t dar; /* dar & dsisr are only filled on a DSI trap */ 56 __register_t dsisr; 57 __register_t exc; 58 }; 59 60 /* 61 * This is to ensure alignment of the stackpointer 62 */ 63 #define FRAMELEN roundup(sizeof(struct trapframe) + 32, 16) 64 65 struct callframe { 66 register_t cf_sp; 67 register_t cf_cr; 68 register_t cf_lr; 69 register_t cf_toc; 70 }; 71 72 struct sigframe { 73 int sf_signum; 74 siginfo_t *sf_sip; 75 struct sigcontext sf_sc; 76 siginfo_t sf_si; 77 }; 78 79 struct switchframe { 80 register_t sf_sp; 81 register_t sf_cr; 82 register_t sf_lr; /* unused */ 83 register_t sf_toc; /* unused */ 84 register_t sf_r14; 85 register_t sf_r15; 86 register_t sf_r16; 87 register_t sf_r17; 88 register_t sf_r18; 89 register_t sf_r19; 90 register_t sf_r20; 91 register_t sf_r21; 92 register_t sf_r22; 93 register_t sf_r23; 94 register_t sf_r24; 95 register_t sf_r25; 96 register_t sf_r26; 97 register_t sf_r27; 98 register_t sf_r28; 99 register_t sf_r29; 100 register_t sf_r30; 101 register_t sf_r31; 102 }; 103 104 #endif /* _MACHDEP_FRAME_H_ */ 105