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/memory.h" 24 #include "exec/tswap.h" 25 #include "hw/qdev-core.h" 26 #include "hw/qdev-properties.h" 27 #include "hw/core/sysemu-cpu-ops.h" 28 29 bool cpu_paging_enabled(const CPUState *cpu) 30 { 31 CPUClass *cc = CPU_GET_CLASS(cpu); 32 33 if (cc->sysemu_ops->get_paging_enabled) { 34 return cc->sysemu_ops->get_paging_enabled(cpu); 35 } 36 37 return false; 38 } 39 40 bool cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list, 41 Error **errp) 42 { 43 CPUClass *cc = CPU_GET_CLASS(cpu); 44 45 if (cc->sysemu_ops->get_memory_mapping) { 46 return cc->sysemu_ops->get_memory_mapping(cpu, list, errp); 47 } 48 49 error_setg(errp, "Obtaining memory mappings is unsupported on this CPU."); 50 return false; 51 } 52 53 hwaddr cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr, 54 MemTxAttrs *attrs) 55 { 56 CPUClass *cc = CPU_GET_CLASS(cpu); 57 hwaddr paddr; 58 59 if (cc->sysemu_ops->get_phys_page_attrs_debug) { 60 paddr = cc->sysemu_ops->get_phys_page_attrs_debug(cpu, addr, attrs); 61 } else { 62 /* Fallback for CPUs which don't implement the _attrs_ hook */ 63 *attrs = MEMTXATTRS_UNSPECIFIED; 64 paddr = cc->sysemu_ops->get_phys_page_debug(cpu, addr); 65 } 66 /* Indicate that this is a debug access. */ 67 attrs->debug = 1; 68 return paddr; 69 } 70 71 hwaddr cpu_get_phys_page_debug(CPUState *cpu, vaddr addr) 72 { 73 MemTxAttrs attrs = {}; 74 75 return cpu_get_phys_page_attrs_debug(cpu, addr, &attrs); 76 } 77 78 int cpu_asidx_from_attrs(CPUState *cpu, MemTxAttrs attrs) 79 { 80 int ret = 0; 81 82 if (cpu->cc->sysemu_ops->asidx_from_attrs) { 83 ret = cpu->cc->sysemu_ops->asidx_from_attrs(cpu, attrs); 84 assert(ret < cpu->num_ases && ret >= 0); 85 } 86 return ret; 87 } 88 89 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu, 90 void *opaque) 91 { 92 CPUClass *cc = CPU_GET_CLASS(cpu); 93 94 if (!cc->sysemu_ops->write_elf32_qemunote) { 95 return 0; 96 } 97 return (*cc->sysemu_ops->write_elf32_qemunote)(f, cpu, opaque); 98 } 99 100 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu, 101 int cpuid, void *opaque) 102 { 103 CPUClass *cc = CPU_GET_CLASS(cpu); 104 105 if (!cc->sysemu_ops->write_elf32_note) { 106 return -1; 107 } 108 return (*cc->sysemu_ops->write_elf32_note)(f, cpu, cpuid, opaque); 109 } 110 111 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu, 112 void *opaque) 113 { 114 CPUClass *cc = CPU_GET_CLASS(cpu); 115 116 if (!cc->sysemu_ops->write_elf64_qemunote) { 117 return 0; 118 } 119 return (*cc->sysemu_ops->write_elf64_qemunote)(f, cpu, opaque); 120 } 121 122 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu, 123 int cpuid, void *opaque) 124 { 125 CPUClass *cc = CPU_GET_CLASS(cpu); 126 127 if (!cc->sysemu_ops->write_elf64_note) { 128 return -1; 129 } 130 return (*cc->sysemu_ops->write_elf64_note)(f, cpu, cpuid, opaque); 131 } 132 133 bool cpu_virtio_is_big_endian(CPUState *cpu) 134 { 135 CPUClass *cc = CPU_GET_CLASS(cpu); 136 137 if (cc->sysemu_ops->virtio_is_big_endian) { 138 return cc->sysemu_ops->virtio_is_big_endian(cpu); 139 } 140 return target_words_bigendian(); 141 } 142 143 GuestPanicInformation *cpu_get_crash_info(CPUState *cpu) 144 { 145 CPUClass *cc = CPU_GET_CLASS(cpu); 146 GuestPanicInformation *res = NULL; 147 148 if (cc->sysemu_ops->get_crash_info) { 149 res = cc->sysemu_ops->get_crash_info(cpu); 150 } 151 return res; 152 } 153 154 static const Property cpu_system_props[] = { 155 /* 156 * Create a memory property for system CPU object, so users can 157 * wire up its memory. The default if no link is set up is to use 158 * the system address space. 159 */ 160 DEFINE_PROP_LINK("memory", CPUState, memory, TYPE_MEMORY_REGION, 161 MemoryRegion *), 162 }; 163 164 static bool cpu_get_start_powered_off(Object *obj, Error **errp) 165 { 166 CPUState *cpu = CPU(obj); 167 return cpu->start_powered_off; 168 } 169 170 static void cpu_set_start_powered_off(Object *obj, bool value, Error **errp) 171 { 172 CPUState *cpu = CPU(obj); 173 cpu->start_powered_off = value; 174 } 175 176 void cpu_class_init_props(DeviceClass *dc) 177 { 178 ObjectClass *oc = OBJECT_CLASS(dc); 179 180 /* 181 * We can't use DEFINE_PROP_BOOL in the Property array for this 182 * property, because we want this to be settable after realize. 183 */ 184 object_class_property_add_bool(oc, "start-powered-off", 185 cpu_get_start_powered_off, 186 cpu_set_start_powered_off); 187 188 device_class_set_props(dc, cpu_system_props); 189 } 190