hw/core/cpu-sysemu.c

   1 /*
   2  * QEMU CPU model (system emulation 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/tswap.h"
  24 #include "hw/core/sysemu-cpu-ops.h"
  25
  26 bool cpu_paging_enabled(const CPUState *cpu)
  27 {
  28     CPUClass *cc = CPU_GET_CLASS(cpu);
  29
  30     if (cc->sysemu_ops->get_paging_enabled) {
  31         return cc->sysemu_ops->get_paging_enabled(cpu);
  32     }
  33
  34     return false;
  35 }
  36
  37 bool cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
  38                             Error **errp)
  39 {
  40     CPUClass *cc = CPU_GET_CLASS(cpu);
  41
  42     if (cc->sysemu_ops->get_memory_mapping) {
  43         return cc->sysemu_ops->get_memory_mapping(cpu, list, errp);
  44     }
  45
  46     error_setg(errp, "Obtaining memory mappings is unsupported on this CPU.");
  47     return false;
  48 }
  49
  50 hwaddr cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr,
  51                                      MemTxAttrs *attrs)
  52 {
  53     CPUClass *cc = CPU_GET_CLASS(cpu);
  54
  55     if (cc->sysemu_ops->get_phys_page_attrs_debug) {
  56         return cc->sysemu_ops->get_phys_page_attrs_debug(cpu, addr, attrs);
  57     }
  58     /* Fallback for CPUs which don't implement the _attrs_ hook */
  59     *attrs = MEMTXATTRS_UNSPECIFIED;
  60     return cc->sysemu_ops->get_phys_page_debug(cpu, addr);
  61 }
  62
  63 hwaddr cpu_get_phys_page_debug(CPUState *cpu, vaddr addr)
  64 {
  65     MemTxAttrs attrs = {};
  66
  67     return cpu_get_phys_page_attrs_debug(cpu, addr, &attrs);
  68 }
  69
  70 int cpu_asidx_from_attrs(CPUState *cpu, MemTxAttrs attrs)
  71 {
  72     int ret = 0;
  73
  74     if (cpu->cc->sysemu_ops->asidx_from_attrs) {
  75         ret = cpu->cc->sysemu_ops->asidx_from_attrs(cpu, attrs);
  76         assert(ret < cpu->num_ases && ret >= 0);
  77     }
  78     return ret;
  79 }
  80
  81 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
  82                              void *opaque)
  83 {
  84     CPUClass *cc = CPU_GET_CLASS(cpu);
  85
  86     if (!cc->sysemu_ops->write_elf32_qemunote) {
  87         return 0;
  88     }
  89     return (*cc->sysemu_ops->write_elf32_qemunote)(f, cpu, opaque);
  90 }
  91
  92 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
  93                          int cpuid, void *opaque)
  94 {
  95     CPUClass *cc = CPU_GET_CLASS(cpu);
  96
  97     if (!cc->sysemu_ops->write_elf32_note) {
  98         return -1;
  99     }
 100     return (*cc->sysemu_ops->write_elf32_note)(f, cpu, cpuid, opaque);
 101 }
 102
 103 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
 104                              void *opaque)
 105 {
 106     CPUClass *cc = CPU_GET_CLASS(cpu);
 107
 108     if (!cc->sysemu_ops->write_elf64_qemunote) {
 109         return 0;
 110     }
 111     return (*cc->sysemu_ops->write_elf64_qemunote)(f, cpu, opaque);
 112 }
 113
 114 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
 115                          int cpuid, void *opaque)
 116 {
 117     CPUClass *cc = CPU_GET_CLASS(cpu);
 118
 119     if (!cc->sysemu_ops->write_elf64_note) {
 120         return -1;
 121     }
 122     return (*cc->sysemu_ops->write_elf64_note)(f, cpu, cpuid, opaque);
 123 }
 124
 125 bool cpu_virtio_is_big_endian(CPUState *cpu)
 126 {
 127     CPUClass *cc = CPU_GET_CLASS(cpu);
 128
 129     if (cc->sysemu_ops->virtio_is_big_endian) {
 130         return cc->sysemu_ops->virtio_is_big_endian(cpu);
 131     }
 132     return target_words_bigendian();
 133 }
 134
 135 GuestPanicInformation *cpu_get_crash_info(CPUState *cpu)
 136 {
 137     CPUClass *cc = CPU_GET_CLASS(cpu);
 138     GuestPanicInformation *res = NULL;
 139
 140     if (cc->sysemu_ops->get_crash_info) {
 141         res = cc->sysemu_ops->get_crash_info(cpu);
 142     }
 143     return res;
 144 }