diff options
Diffstat (limited to 'src/qom/cpu.c')
| -rw-r--r-- | src/qom/cpu.c | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/src/qom/cpu.c b/src/qom/cpu.c new file mode 100644 index 0000000..fb80d13 --- /dev/null +++ b/src/qom/cpu.c @@ -0,0 +1,382 @@ +/* + * QEMU CPU model + * + * Copyright (c) 2012-2014 SUSE LINUX Products GmbH + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see + * <http://www.gnu.org/licenses/gpl-2.0.html> + */ + +#include "qemu-common.h" +#include "qom/cpu.h" +#include "sysemu/kvm.h" +#include "qemu/notify.h" +#include "qemu/log.h" +#include "qemu/error-report.h" +#include "sysemu/sysemu.h" + +bool cpu_exists(int64_t id) +{ + CPUState *cpu; + + CPU_FOREACH(cpu) { + CPUClass *cc = CPU_GET_CLASS(cpu); + + if (cc->get_arch_id(cpu) == id) { + return true; + } + } + return false; +} + +CPUState *cpu_generic_init(const char *typename, const char *cpu_model) +{ + char *str, *name, *featurestr; + CPUState *cpu; + ObjectClass *oc; + CPUClass *cc; + Error *err = NULL; + + str = g_strdup(cpu_model); + name = strtok(str, ","); + + oc = cpu_class_by_name(typename, name); + if (oc == NULL) { + g_free(str); + return NULL; + } + + cpu = CPU(object_new(object_class_get_name(oc))); + cc = CPU_GET_CLASS(cpu); + + featurestr = strtok(NULL, ","); + cc->parse_features(cpu, featurestr, &err); + g_free(str); + if (err != NULL) { + goto out; + } + + object_property_set_bool(OBJECT(cpu), true, "realized", &err); + +out: + if (err != NULL) { + error_report_err(err); + object_unref(OBJECT(cpu)); + return NULL; + } + + return cpu; +} + +bool cpu_paging_enabled(const CPUState *cpu) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + return cc->get_paging_enabled(cpu); +} + +static bool cpu_common_get_paging_enabled(const CPUState *cpu) +{ + return false; +} + +void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list, + Error **errp) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + cc->get_memory_mapping(cpu, list, errp); +} + +static void cpu_common_get_memory_mapping(CPUState *cpu, + MemoryMappingList *list, + Error **errp) +{ + error_setg(errp, "Obtaining memory mappings is unsupported on this CPU."); +} + +void cpu_reset_interrupt(CPUState *cpu, int mask) +{ + cpu->interrupt_request &= ~mask; +} + +void cpu_exit(CPUState *cpu) +{ + cpu->exit_request = 1; + /* Ensure cpu_exec will see the exit request after TCG has exited. */ + smp_wmb(); + cpu->tcg_exit_req = 1; +} + +int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu, + void *opaque) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + return (*cc->write_elf32_qemunote)(f, cpu, opaque); +} + +static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f, + CPUState *cpu, void *opaque) +{ + return -1; +} + +int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu, + int cpuid, void *opaque) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + return (*cc->write_elf32_note)(f, cpu, cpuid, opaque); +} + +static int cpu_common_write_elf32_note(WriteCoreDumpFunction f, + CPUState *cpu, int cpuid, + void *opaque) +{ + return -1; +} + +int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu, + void *opaque) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + return (*cc->write_elf64_qemunote)(f, cpu, opaque); +} + +static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f, + CPUState *cpu, void *opaque) +{ + return -1; +} + +int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu, + int cpuid, void *opaque) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + return (*cc->write_elf64_note)(f, cpu, cpuid, opaque); +} + +static int cpu_common_write_elf64_note(WriteCoreDumpFunction f, + CPUState *cpu, int cpuid, + void *opaque) +{ + return -1; +} + + +static int cpu_common_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg) +{ + return 0; +} + +static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg) +{ + return 0; +} + +bool target_words_bigendian(void); +static bool cpu_common_virtio_is_big_endian(CPUState *cpu) +{ + return target_words_bigendian(); +} + +static void cpu_common_noop(CPUState *cpu) +{ +} + +static bool cpu_common_exec_interrupt(CPUState *cpu, int int_req) +{ + return false; +} + +void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, + int flags) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + if (cc->dump_state) { + cpu_synchronize_state(cpu); + cc->dump_state(cpu, f, cpu_fprintf, flags); + } +} + +void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf, + int flags) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + if (cc->dump_statistics) { + cc->dump_statistics(cpu, f, cpu_fprintf, flags); + } +} + +void cpu_reset(CPUState *cpu) +{ + CPUClass *klass = CPU_GET_CLASS(cpu); + + if (klass->reset != NULL) { + (*klass->reset)(cpu); + } +} + +static void cpu_common_reset(CPUState *cpu) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + + if (qemu_loglevel_mask(CPU_LOG_RESET)) { + qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index); + log_cpu_state(cpu, cc->reset_dump_flags); + } + + cpu->interrupt_request = 0; + cpu->current_tb = NULL; + cpu->halted = 0; + cpu->mem_io_pc = 0; + cpu->mem_io_vaddr = 0; + cpu->icount_extra = 0; + cpu->icount_decr.u32 = 0; + cpu->can_do_io = 1; + cpu->exception_index = -1; + cpu->crash_occurred = false; + memset(cpu->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *)); +} + +static bool cpu_common_has_work(CPUState *cs) +{ + return false; +} + +ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model) +{ + CPUClass *cc = CPU_CLASS(object_class_by_name(typename)); + + return cc->class_by_name(cpu_model); +} + +static ObjectClass *cpu_common_class_by_name(const char *cpu_model) +{ + return NULL; +} + +static void cpu_common_parse_features(CPUState *cpu, char *features, + Error **errp) +{ + char *featurestr; /* Single "key=value" string being parsed */ + char *val; + Error *err = NULL; + + featurestr = features ? strtok(features, ",") : NULL; + + while (featurestr) { + val = strchr(featurestr, '='); + if (val) { + *val = 0; + val++; + object_property_parse(OBJECT(cpu), val, featurestr, &err); + if (err) { + error_propagate(errp, err); + return; + } + } else { + error_setg(errp, "Expected key=value format, found %s.", + featurestr); + return; + } + featurestr = strtok(NULL, ","); + } +} + +static void cpu_common_realizefn(DeviceState *dev, Error **errp) +{ + CPUState *cpu = CPU(dev); + + if (dev->hotplugged) { + cpu_synchronize_post_init(cpu); + cpu_resume(cpu); + } +} + +static void cpu_common_initfn(Object *obj) +{ + CPUState *cpu = CPU(obj); + CPUClass *cc = CPU_GET_CLASS(obj); + + cpu->cpu_index = -1; + cpu->gdb_num_regs = cpu->gdb_num_g_regs = cc->gdb_num_core_regs; + qemu_mutex_init(&cpu->work_mutex); + QTAILQ_INIT(&cpu->breakpoints); + QTAILQ_INIT(&cpu->watchpoints); +} + +static void cpu_common_finalize(Object *obj) +{ + cpu_exec_exit(CPU(obj)); +} + +static int64_t cpu_common_get_arch_id(CPUState *cpu) +{ + return cpu->cpu_index; +} + +static void cpu_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + CPUClass *k = CPU_CLASS(klass); + + k->class_by_name = cpu_common_class_by_name; + k->parse_features = cpu_common_parse_features; + k->reset = cpu_common_reset; + k->get_arch_id = cpu_common_get_arch_id; + k->has_work = cpu_common_has_work; + k->get_paging_enabled = cpu_common_get_paging_enabled; + k->get_memory_mapping = cpu_common_get_memory_mapping; + k->write_elf32_qemunote = cpu_common_write_elf32_qemunote; + k->write_elf32_note = cpu_common_write_elf32_note; + k->write_elf64_qemunote = cpu_common_write_elf64_qemunote; + k->write_elf64_note = cpu_common_write_elf64_note; + k->gdb_read_register = cpu_common_gdb_read_register; + k->gdb_write_register = cpu_common_gdb_write_register; + k->virtio_is_big_endian = cpu_common_virtio_is_big_endian; + k->debug_excp_handler = cpu_common_noop; + k->cpu_exec_enter = cpu_common_noop; + k->cpu_exec_exit = cpu_common_noop; + k->cpu_exec_interrupt = cpu_common_exec_interrupt; + dc->realize = cpu_common_realizefn; + /* + * Reason: CPUs still need special care by board code: wiring up + * IRQs, adding reset handlers, halting non-first CPUs, ... + */ + dc->cannot_instantiate_with_device_add_yet = true; +} + +static const TypeInfo cpu_type_info = { + .name = TYPE_CPU, + .parent = TYPE_DEVICE, + .instance_size = sizeof(CPUState), + .instance_init = cpu_common_initfn, + .instance_finalize = cpu_common_finalize, + .abstract = true, + .class_size = sizeof(CPUClass), + .class_init = cpu_class_init, +}; + +static void cpu_register_types(void) +{ + type_register_static(&cpu_type_info); +} + +type_init(cpu_register_types) |
