root / target-s390x / cpu.c @ 5b50e790
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/*
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* QEMU S/390 CPU
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*
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* Copyright (c) 2009 Ulrich Hecht
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* Copyright (c) 2011 Alexander Graf
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* Copyright (c) 2012 SUSE LINUX Products GmbH
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* Copyright (c) 2012 IBM Corp.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see
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* <http://www.gnu.org/licenses/lgpl-2.1.html>
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* Contributions after 2012-12-11 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*/
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#include "cpu.h" |
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#include "qemu-common.h" |
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#include "qemu/timer.h" |
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#include "hw/hw.h" |
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#ifndef CONFIG_USER_ONLY
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#include "sysemu/arch_init.h" |
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#endif
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#define CR0_RESET 0xE0UL |
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#define CR14_RESET 0xC2000000UL; |
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/* generate CPU information for cpu -? */
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void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf)
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{ |
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#ifdef CONFIG_KVM
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(*cpu_fprintf)(f, "s390 %16s\n", "host"); |
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#endif
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} |
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#ifndef CONFIG_USER_ONLY
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CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp) |
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{ |
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CpuDefinitionInfoList *entry; |
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CpuDefinitionInfo *info; |
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info = g_malloc0(sizeof(*info));
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info->name = g_strdup("host");
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entry = g_malloc0(sizeof(*entry));
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entry->value = info; |
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return entry;
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} |
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#endif
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static void s390_cpu_set_pc(CPUState *cs, vaddr value) |
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{ |
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S390CPU *cpu = S390_CPU(cs); |
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cpu->env.psw.addr = value; |
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} |
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/* CPUClass::reset() */
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static void s390_cpu_reset(CPUState *s) |
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{ |
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S390CPU *cpu = S390_CPU(s); |
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S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); |
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CPUS390XState *env = &cpu->env; |
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s390_del_running_cpu(cpu); |
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scc->parent_reset(s); |
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memset(env, 0, offsetof(CPUS390XState, breakpoints));
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/* architectured initial values for CR 0 and 14 */
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env->cregs[0] = CR0_RESET;
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env->cregs[14] = CR14_RESET;
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/* set halted to 1 to make sure we can add the cpu in
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* s390_ipl_cpu code, where CPUState::halted is set back to 0
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* after incrementing the cpu counter */
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#if !defined(CONFIG_USER_ONLY)
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s->halted = 1;
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#endif
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tlb_flush(env, 1);
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} |
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#if !defined(CONFIG_USER_ONLY)
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static void s390_cpu_machine_reset_cb(void *opaque) |
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{ |
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S390CPU *cpu = opaque; |
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cpu_reset(CPU(cpu)); |
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} |
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#endif
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static void s390_cpu_realizefn(DeviceState *dev, Error **errp) |
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{ |
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S390CPU *cpu = S390_CPU(dev); |
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S390CPUClass *scc = S390_CPU_GET_CLASS(dev); |
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cpu_reset(CPU(cpu)); |
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scc->parent_realize(dev, errp); |
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} |
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static void s390_cpu_initfn(Object *obj) |
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{ |
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CPUState *cs = CPU(obj); |
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S390CPU *cpu = S390_CPU(obj); |
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CPUS390XState *env = &cpu->env; |
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static bool inited; |
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static int cpu_num = 0; |
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#if !defined(CONFIG_USER_ONLY)
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struct tm tm;
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#endif
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cs->env_ptr = env; |
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cpu_exec_init(env); |
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#if !defined(CONFIG_USER_ONLY)
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qemu_register_reset(s390_cpu_machine_reset_cb, cpu); |
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qemu_get_timedate(&tm, 0);
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env->tod_offset = TOD_UNIX_EPOCH + |
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(time2tod(mktimegm(&tm)) * 1000000000ULL);
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env->tod_basetime = 0;
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env->tod_timer = qemu_new_timer_ns(vm_clock, s390x_tod_timer, cpu); |
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env->cpu_timer = qemu_new_timer_ns(vm_clock, s390x_cpu_timer, cpu); |
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/* set CPUState::halted state to 1 to avoid decrementing the running
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* cpu counter in s390_cpu_reset to a negative number at
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* initial ipl */
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cs->halted = 1;
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#endif
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env->cpu_num = cpu_num++; |
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env->ext_index = -1;
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if (tcg_enabled() && !inited) {
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inited = true;
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s390x_translate_init(); |
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} |
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} |
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static void s390_cpu_finalize(Object *obj) |
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{ |
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#if !defined(CONFIG_USER_ONLY)
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S390CPU *cpu = S390_CPU(obj); |
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qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu); |
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#endif
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} |
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static const VMStateDescription vmstate_s390_cpu = { |
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.name = "cpu",
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.unmigratable = 1,
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}; |
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static void s390_cpu_class_init(ObjectClass *oc, void *data) |
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{ |
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S390CPUClass *scc = S390_CPU_CLASS(oc); |
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CPUClass *cc = CPU_CLASS(scc); |
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DeviceClass *dc = DEVICE_CLASS(oc); |
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scc->parent_realize = dc->realize; |
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dc->realize = s390_cpu_realizefn; |
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scc->parent_reset = cc->reset; |
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cc->reset = s390_cpu_reset; |
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cc->do_interrupt = s390_cpu_do_interrupt; |
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cc->dump_state = s390_cpu_dump_state; |
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cc->set_pc = s390_cpu_set_pc; |
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cc->gdb_read_register = s390_cpu_gdb_read_register; |
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cc->gdb_write_register = s390_cpu_gdb_write_register; |
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#ifndef CONFIG_USER_ONLY
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cc->get_phys_page_debug = s390_cpu_get_phys_page_debug; |
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#endif
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dc->vmsd = &vmstate_s390_cpu; |
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cc->gdb_num_core_regs = S390_NUM_REGS; |
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} |
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static const TypeInfo s390_cpu_type_info = { |
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.name = TYPE_S390_CPU, |
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.parent = TYPE_CPU, |
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.instance_size = sizeof(S390CPU),
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.instance_init = s390_cpu_initfn, |
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.instance_finalize = s390_cpu_finalize, |
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.abstract = false,
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.class_size = sizeof(S390CPUClass),
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.class_init = s390_cpu_class_init, |
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}; |
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static void s390_cpu_register_types(void) |
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{ |
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type_register_static(&s390_cpu_type_info); |
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} |
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type_init(s390_cpu_register_types) |