1 /* $NetBSD: frame.h,v 1.22 2011/01/18 01:02:54 matt 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 _POWERPC_FRAME_H_ 34 #define _POWERPC_FRAME_H_ 35 36 #include <machine/types.h> 37 38 #ifdef _KERNEL 39 #ifdef _KERNEL_OPT 40 #include "opt_ppcarch.h" 41 #endif 42 #endif 43 44 /* 45 * We have to save all registers on every trap, because 46 * 1. user could attach this process every time 47 * 2. we must be able to restore all user registers in case of fork 48 * Actually, we do not save the fp registers on trap, since 49 * these are not used by the kernel. They are saved only when switching 50 * between processes using the FPU. 51 * 52 * Change ordering to cluster together these register_t's. XXX 53 */ 54 struct reg_sans_pc { 55 register_t r_fixreg[32]; 56 register_t r_lr; 57 uint32_t r_cr; 58 uint32_t r_xer; 59 register_t r_ctr; 60 }; 61 62 struct utrapframe { 63 register_t fixreg[32]; 64 register_t lr; 65 int cr; 66 int xer; 67 register_t ctr; 68 register_t srr0; 69 register_t srr1; 70 int vrsave; 71 int mq; 72 int spare; 73 }; 74 75 struct clockframe { 76 register_t cf_srr0; 77 register_t cf_srr1; 78 int cf_idepth; 79 }; 80 81 struct trapframe { 82 struct reg_sans_pc tf_ureg; 83 struct clockframe tf_cf; 84 uint32_t tf_exc; 85 #if defined(PPC_OEA) || defined(PPC_OEA64) || defined(PPC_OEA64_BRIDGE) 86 register_t tf_dar; 87 uint32_t tf_dsisr; 88 uint32_t tf_vrsave; 89 uint32_t tf_mq; 90 #endif 91 #if defined(PPC_BOOKE) || defined(PPC_IBM4XX) 92 register_t tf_dear; 93 register_t tf_mcar; 94 register_t tf_sprg1; 95 uint32_t tf_esr; 96 uint32_t tf_mcsr; 97 uint32_t tf_pid; 98 uint32_t tf_spefscr; 99 #endif 100 }; 101 #define tf_fixreg tf_ureg.r_fixreg 102 #define tf_lr tf_ureg.r_lr 103 #define tf_cr tf_ureg.r_cr 104 #define tf_xer tf_ureg.r_xer 105 #define tf_ctr tf_ureg.r_ctr 106 #define tf_srr0 tf_cf.cf_srr0 107 #define tf_srr1 tf_cf.cf_srr1 108 #define tf_idepth tf_cf.cf_idepth 109 110 struct ktrapframe { 111 register_t ktf_sp; 112 register_t ktf_lr; 113 struct trapframe ktf_tf; 114 }; 115 116 #if defined(_KERNEL) || defined(_LKM) 117 #ifdef _LP64 118 struct utrapframe32 { 119 register32_t fixreg[32]; 120 register32_t lr; 121 int cr; 122 int xer; 123 register32_t ctr; 124 register32_t srr0; 125 register32_t srr1; 126 int vrsave; 127 int mq; 128 int spare; 129 }; 130 #endif 131 #endif /* _KERNEL || _LKM */ 132 133 /* 134 * This is to ensure alignment of the stackpointer 135 */ 136 #define FRAMELEN roundup(sizeof(struct ktrapframe), CALLFRAMELEN) 137 #define ktrapframe(l) ((struct ktrapframe *)(uvm_lwp_getuarea(l) + USPACE - CALLFRAMELEN - FRAMELEN)) 138 #define trapframe(l) (&(ktrapframe(l)->ktf_tf)) 139 140 #define SFRAMELEN roundup(sizeof(struct switchframe), CALLFRAMELEN) 141 struct switchframe { 142 register_t sf_sp; 143 register_t sf_lr; 144 register_t sf_user_sr; /* VSID on IBM4XX */ 145 register_t sf_cr; /* why? CR is volatile. */ 146 register_t sf_fixreg2; 147 register_t sf_fixreg[19]; /* R13-R31 */ 148 }; 149 150 /* 151 * Call frame for PowerPC used during fork. 152 */ 153 #define CALLFRAMELEN sizeof(struct callframe) 154 struct callframe { 155 register_t cf_sp; 156 register_t cf_lr; 157 register_t cf_r30; 158 register_t cf_r31; 159 }; 160 161 struct saframe { 162 register_t saf_r1; /* stack pointer */ 163 register_t saf_lr; /* Callee lr save area */ 164 #ifndef _LP64 165 register_t saf_fill[2]; /* Pad to multiple of 16 bytes */ 166 #endif 167 }; 168 169 #endif /* _POWERPC_FRAME_H_ */ 170