1 /* 2 * QEMU CPU model (system specific) 3 * 4 * Copyright (c) 2012-2014 SUSE LINUX Products GmbH 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License 8 * as published by the Free Software Foundation; either version 2 9 * of the License, or (at your option) any later version. 10 * 11 * This program 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 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, see 18 * <http://www.gnu.org/licenses/gpl-2.0.html> 19 */ 20 21 #include "qemu/osdep.h" 22 #include "qapi/error.h" 23 #include "exec/address-spaces.h" 24 #include "exec/memory.h" 25 #include "exec/tswap.h" 26 #include "hw/qdev-core.h" 27 #include "hw/qdev-properties.h" 28 #include "hw/core/sysemu-cpu-ops.h" 29 30 bool cpu_paging_enabled(const CPUState *cpu) 31 { 32 CPUClass *cc = CPU_GET_CLASS(cpu); 33 34 if (cc->sysemu_ops->get_paging_enabled) { 35 return cc->sysemu_ops->get_paging_enabled(cpu); 36 } 37 38 return false; 39 } 40 41 bool cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list, 42 Error **errp) 43 { 44 CPUClass *cc = CPU_GET_CLASS(cpu); 45 46 if (cc->sysemu_ops->get_memory_mapping) { 47 return cc->sysemu_ops->get_memory_mapping(cpu, list, errp); 48 } 49 50 error_setg(errp, "Obtaining memory mappings is unsupported on this CPU."); 51 return false; 52 } 53 54 hwaddr cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr, 55 MemTxAttrs *attrs) 56 { 57 CPUClass *cc = CPU_GET_CLASS(cpu); 58 hwaddr paddr; 59 60 if (cc->sysemu_ops->get_phys_page_attrs_debug) { 61 paddr = cc->sysemu_ops->get_phys_page_attrs_debug(cpu, addr, attrs); 62 } else { 63 /* Fallback for CPUs which don't implement the _attrs_ hook */ 64 *attrs = MEMTXATTRS_UNSPECIFIED; 65 paddr = cc->sysemu_ops->get_phys_page_debug(cpu, addr); 66 } 67 /* Indicate that this is a debug access. */ 68 attrs->debug = 1; 69 return paddr; 70 } 71 72 hwaddr cpu_get_phys_page_debug(CPUState *cpu, vaddr addr) 73 { 74 MemTxAttrs attrs = {}; 75 76 return cpu_get_phys_page_attrs_debug(cpu, addr, &attrs); 77 } 78 79 int cpu_asidx_from_attrs(CPUState *cpu, MemTxAttrs attrs) 80 { 81 int ret = 0; 82 83 if (cpu->cc->sysemu_ops->asidx_from_attrs) { 84 ret = cpu->cc->sysemu_ops->asidx_from_attrs(cpu, attrs); 85 assert(ret < cpu->num_ases && ret >= 0); 86 } 87 return ret; 88 } 89 90 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu, 91 void *opaque) 92 { 93 CPUClass *cc = CPU_GET_CLASS(cpu); 94 95 if (!cc->sysemu_ops->write_elf32_qemunote) { 96 return 0; 97 } 98 return (*cc->sysemu_ops->write_elf32_qemunote)(f, cpu, opaque); 99 } 100 101 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu, 102 int cpuid, void *opaque) 103 { 104 CPUClass *cc = CPU_GET_CLASS(cpu); 105 106 if (!cc->sysemu_ops->write_elf32_note) { 107 return -1; 108 } 109 return (*cc->sysemu_ops->write_elf32_note)(f, cpu, cpuid, opaque); 110 } 111 112 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu, 113 void *opaque) 114 { 115 CPUClass *cc = CPU_GET_CLASS(cpu); 116 117 if (!cc->sysemu_ops->write_elf64_qemunote) { 118 return 0; 119 } 120 return (*cc->sysemu_ops->write_elf64_qemunote)(f, cpu, opaque); 121 } 122 123 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu, 124 int cpuid, void *opaque) 125 { 126 CPUClass *cc = CPU_GET_CLASS(cpu); 127 128 if (!cc->sysemu_ops->write_elf64_note) { 129 return -1; 130 } 131 return (*cc->sysemu_ops->write_elf64_note)(f, cpu, cpuid, opaque); 132 } 133 134 bool cpu_virtio_is_big_endian(CPUState *cpu) 135 { 136 CPUClass *cc = CPU_GET_CLASS(cpu); 137 138 if (cc->sysemu_ops->virtio_is_big_endian) { 139 return cc->sysemu_ops->virtio_is_big_endian(cpu); 140 } 141 return target_words_bigendian(); 142 } 143 144 GuestPanicInformation *cpu_get_crash_info(CPUState *cpu) 145 { 146 CPUClass *cc = CPU_GET_CLASS(cpu); 147 GuestPanicInformation *res = NULL; 148 149 if (cc->sysemu_ops->get_crash_info) { 150 res = cc->sysemu_ops->get_crash_info(cpu); 151 } 152 return res; 153 } 154 155 static const Property cpu_system_props[] = { 156 /* 157 * Create a memory property for system CPU object, so users can 158 * wire up its memory. The default if no link is set up is to use 159 * the system address space. 160 */ 161 DEFINE_PROP_LINK("memory", CPUState, memory, TYPE_MEMORY_REGION, 162 MemoryRegion *), 163 }; 164 165 static bool cpu_get_start_powered_off(Object *obj, Error **errp) 166 { 167 CPUState *cpu = CPU(obj); 168 return cpu->start_powered_off; 169 } 170 171 static void cpu_set_start_powered_off(Object *obj, bool value, Error **errp) 172 { 173 CPUState *cpu = CPU(obj); 174 cpu->start_powered_off = value; 175 } 176 177 void cpu_class_init_props(DeviceClass *dc) 178 { 179 ObjectClass *oc = OBJECT_CLASS(dc); 180 181 /* 182 * We can't use DEFINE_PROP_BOOL in the Property array for this 183 * property, because we want this to be settable after realize. 184 */ 185 object_class_property_add_bool(oc, "start-powered-off", 186 cpu_get_start_powered_off, 187 cpu_set_start_powered_off); 188 189 device_class_set_props(dc, cpu_system_props); 190 } 191 192 void cpu_exec_initfn(CPUState *cpu) 193 { 194 cpu->memory = get_system_memory(); 195 object_ref(OBJECT(cpu->memory)); 196 } 197