1 /* 2 * PowerPC emulation helpers for QEMU. 3 * 4 * Copyright (c) 2003-2007 Jocelyn Mayer 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 #include "qemu/osdep.h" 20 #include "cpu.h" 21 #include "exec/helper-proto.h" 22 #include "exec/exec-all.h" 23 #include "qemu/log.h" 24 25 /*****************************************************************************/ 26 /* SPR accesses */ 27 28 target_ulong helper_load_tbl(CPUPPCState *env) 29 { 30 return (target_ulong)cpu_ppc_load_tbl(env); 31 } 32 33 target_ulong helper_load_tbu(CPUPPCState *env) 34 { 35 return cpu_ppc_load_tbu(env); 36 } 37 38 target_ulong helper_load_atbl(CPUPPCState *env) 39 { 40 return (target_ulong)cpu_ppc_load_atbl(env); 41 } 42 43 target_ulong helper_load_atbu(CPUPPCState *env) 44 { 45 return cpu_ppc_load_atbu(env); 46 } 47 48 #if defined(TARGET_PPC64) && !defined(CONFIG_USER_ONLY) 49 target_ulong helper_load_purr(CPUPPCState *env) 50 { 51 return (target_ulong)cpu_ppc_load_purr(env); 52 } 53 #endif 54 55 target_ulong helper_load_601_rtcl(CPUPPCState *env) 56 { 57 return cpu_ppc601_load_rtcl(env); 58 } 59 60 target_ulong helper_load_601_rtcu(CPUPPCState *env) 61 { 62 return cpu_ppc601_load_rtcu(env); 63 } 64 65 #if !defined(CONFIG_USER_ONLY) 66 void helper_store_tbl(CPUPPCState *env, target_ulong val) 67 { 68 cpu_ppc_store_tbl(env, val); 69 } 70 71 void helper_store_tbu(CPUPPCState *env, target_ulong val) 72 { 73 cpu_ppc_store_tbu(env, val); 74 } 75 76 void helper_store_atbl(CPUPPCState *env, target_ulong val) 77 { 78 cpu_ppc_store_atbl(env, val); 79 } 80 81 void helper_store_atbu(CPUPPCState *env, target_ulong val) 82 { 83 cpu_ppc_store_atbu(env, val); 84 } 85 86 void helper_store_601_rtcl(CPUPPCState *env, target_ulong val) 87 { 88 cpu_ppc601_store_rtcl(env, val); 89 } 90 91 void helper_store_601_rtcu(CPUPPCState *env, target_ulong val) 92 { 93 cpu_ppc601_store_rtcu(env, val); 94 } 95 96 target_ulong helper_load_decr(CPUPPCState *env) 97 { 98 return cpu_ppc_load_decr(env); 99 } 100 101 void helper_store_decr(CPUPPCState *env, target_ulong val) 102 { 103 cpu_ppc_store_decr(env, val); 104 } 105 106 target_ulong helper_load_hdecr(CPUPPCState *env) 107 { 108 return cpu_ppc_load_hdecr(env); 109 } 110 111 void helper_store_hdecr(CPUPPCState *env, target_ulong val) 112 { 113 cpu_ppc_store_hdecr(env, val); 114 } 115 116 target_ulong helper_load_40x_pit(CPUPPCState *env) 117 { 118 return load_40x_pit(env); 119 } 120 121 void helper_store_40x_pit(CPUPPCState *env, target_ulong val) 122 { 123 store_40x_pit(env, val); 124 } 125 126 void helper_store_booke_tcr(CPUPPCState *env, target_ulong val) 127 { 128 store_booke_tcr(env, val); 129 } 130 131 void helper_store_booke_tsr(CPUPPCState *env, target_ulong val) 132 { 133 store_booke_tsr(env, val); 134 } 135 #endif 136 137 /*****************************************************************************/ 138 /* Embedded PowerPC specific helpers */ 139 140 /* XXX: to be improved to check access rights when in user-mode */ 141 target_ulong helper_load_dcr(CPUPPCState *env, target_ulong dcrn) 142 { 143 uint32_t val = 0; 144 145 if (unlikely(env->dcr_env == NULL)) { 146 qemu_log_mask(LOG_GUEST_ERROR, "No DCR environment\n"); 147 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, 148 POWERPC_EXCP_INVAL | 149 POWERPC_EXCP_INVAL_INVAL, GETPC()); 150 } else if (unlikely(ppc_dcr_read(env->dcr_env, 151 (uint32_t)dcrn, &val) != 0)) { 152 qemu_log_mask(LOG_GUEST_ERROR, "DCR read error %d %03x\n", 153 (uint32_t)dcrn, (uint32_t)dcrn); 154 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, 155 POWERPC_EXCP_INVAL | 156 POWERPC_EXCP_PRIV_REG, GETPC()); 157 } 158 return val; 159 } 160 161 void helper_store_dcr(CPUPPCState *env, target_ulong dcrn, target_ulong val) 162 { 163 if (unlikely(env->dcr_env == NULL)) { 164 qemu_log_mask(LOG_GUEST_ERROR, "No DCR environment\n"); 165 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, 166 POWERPC_EXCP_INVAL | 167 POWERPC_EXCP_INVAL_INVAL, GETPC()); 168 } else if (unlikely(ppc_dcr_write(env->dcr_env, (uint32_t)dcrn, 169 (uint32_t)val) != 0)) { 170 qemu_log_mask(LOG_GUEST_ERROR, "DCR write error %d %03x\n", 171 (uint32_t)dcrn, (uint32_t)dcrn); 172 raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM, 173 POWERPC_EXCP_INVAL | 174 POWERPC_EXCP_PRIV_REG, GETPC()); 175 } 176 } 177