diff options
Diffstat (limited to 'qemu/target-s390x/cpu.c')
| -rw-r--r-- | qemu/target-s390x/cpu.c | 481 |
1 files changed, 0 insertions, 481 deletions
diff --git a/qemu/target-s390x/cpu.c b/qemu/target-s390x/cpu.c deleted file mode 100644 index 4bfff341d..000000000 --- a/qemu/target-s390x/cpu.c +++ /dev/null @@ -1,481 +0,0 @@ -/* - * QEMU S/390 CPU - * - * Copyright (c) 2009 Ulrich Hecht - * Copyright (c) 2011 Alexander Graf - * Copyright (c) 2012 SUSE LINUX Products GmbH - * Copyright (c) 2012 IBM Corp. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see - * <http://www.gnu.org/licenses/lgpl-2.1.html> - * Contributions after 2012-12-11 are licensed under the terms of the - * GNU GPL, version 2 or (at your option) any later version. - */ - -#include "qemu/osdep.h" -#include "qapi/error.h" -#include "cpu.h" -#include "qemu-common.h" -#include "qemu/cutils.h" -#include "qemu/timer.h" -#include "qemu/error-report.h" -#include "hw/hw.h" -#include "trace.h" -#include "qapi/visitor.h" -#ifndef CONFIG_USER_ONLY -#include "sysemu/arch_init.h" -#include "sysemu/sysemu.h" -#include "hw/s390x/sclp.h" -#endif - -#define CR0_RESET 0xE0UL -#define CR14_RESET 0xC2000000UL; - -/* generate CPU information for cpu -? */ -void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf) -{ -#ifdef CONFIG_KVM - (*cpu_fprintf)(f, "s390 %16s\n", "host"); -#endif -} - -#ifndef CONFIG_USER_ONLY -CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp) -{ - CpuDefinitionInfoList *entry; - CpuDefinitionInfo *info; - - info = g_malloc0(sizeof(*info)); - info->name = g_strdup("host"); - - entry = g_malloc0(sizeof(*entry)); - entry->value = info; - - return entry; -} -#endif - -static void s390_cpu_set_pc(CPUState *cs, vaddr value) -{ - S390CPU *cpu = S390_CPU(cs); - - cpu->env.psw.addr = value; -} - -static bool s390_cpu_has_work(CPUState *cs) -{ - S390CPU *cpu = S390_CPU(cs); - CPUS390XState *env = &cpu->env; - - return (cs->interrupt_request & CPU_INTERRUPT_HARD) && - (env->psw.mask & PSW_MASK_EXT); -} - -#if !defined(CONFIG_USER_ONLY) -/* S390CPUClass::load_normal() */ -static void s390_cpu_load_normal(CPUState *s) -{ - S390CPU *cpu = S390_CPU(s); - cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR; - cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64; - s390_cpu_set_state(CPU_STATE_OPERATING, cpu); -} -#endif - -/* S390CPUClass::cpu_reset() */ -static void s390_cpu_reset(CPUState *s) -{ - S390CPU *cpu = S390_CPU(s); - S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); - CPUS390XState *env = &cpu->env; - - env->pfault_token = -1UL; - scc->parent_reset(s); - cpu->env.sigp_order = 0; - s390_cpu_set_state(CPU_STATE_STOPPED, cpu); - tlb_flush(s, 1); -} - -/* S390CPUClass::initial_reset() */ -static void s390_cpu_initial_reset(CPUState *s) -{ - S390CPU *cpu = S390_CPU(s); - CPUS390XState *env = &cpu->env; - int i; - - s390_cpu_reset(s); - /* initial reset does not touch regs,fregs and aregs */ - memset(&env->fpc, 0, offsetof(CPUS390XState, cpu_num) - - offsetof(CPUS390XState, fpc)); - - /* architectured initial values for CR 0 and 14 */ - env->cregs[0] = CR0_RESET; - env->cregs[14] = CR14_RESET; - - /* architectured initial value for Breaking-Event-Address register */ - env->gbea = 1; - - env->pfault_token = -1UL; - env->ext_index = -1; - for (i = 0; i < ARRAY_SIZE(env->io_index); i++) { - env->io_index[i] = -1; - } - - /* tininess for underflow is detected before rounding */ - set_float_detect_tininess(float_tininess_before_rounding, - &env->fpu_status); - - /* Reset state inside the kernel that we cannot access yet from QEMU. */ - if (kvm_enabled()) { - kvm_s390_reset_vcpu(cpu); - } - tlb_flush(s, 1); -} - -/* CPUClass:reset() */ -static void s390_cpu_full_reset(CPUState *s) -{ - S390CPU *cpu = S390_CPU(s); - S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); - CPUS390XState *env = &cpu->env; - int i; - - scc->parent_reset(s); - cpu->env.sigp_order = 0; - s390_cpu_set_state(CPU_STATE_STOPPED, cpu); - - memset(env, 0, offsetof(CPUS390XState, cpu_num)); - - /* architectured initial values for CR 0 and 14 */ - env->cregs[0] = CR0_RESET; - env->cregs[14] = CR14_RESET; - - /* architectured initial value for Breaking-Event-Address register */ - env->gbea = 1; - - env->pfault_token = -1UL; - env->ext_index = -1; - for (i = 0; i < ARRAY_SIZE(env->io_index); i++) { - env->io_index[i] = -1; - } - - /* tininess for underflow is detected before rounding */ - set_float_detect_tininess(float_tininess_before_rounding, - &env->fpu_status); - - /* Reset state inside the kernel that we cannot access yet from QEMU. */ - if (kvm_enabled()) { - kvm_s390_reset_vcpu(cpu); - } - tlb_flush(s, 1); -} - -#if !defined(CONFIG_USER_ONLY) -static void s390_cpu_machine_reset_cb(void *opaque) -{ - S390CPU *cpu = opaque; - - run_on_cpu(CPU(cpu), s390_do_cpu_full_reset, CPU(cpu)); -} -#endif - -static void s390_cpu_disas_set_info(CPUState *cpu, disassemble_info *info) -{ - info->mach = bfd_mach_s390_64; - info->print_insn = print_insn_s390; -} - -static void s390_cpu_realizefn(DeviceState *dev, Error **errp) -{ - CPUState *cs = CPU(dev); - S390CPUClass *scc = S390_CPU_GET_CLASS(dev); - S390CPU *cpu = S390_CPU(dev); - CPUS390XState *env = &cpu->env; - Error *err = NULL; - -#if !defined(CONFIG_USER_ONLY) - if (cpu->id >= max_cpus) { - error_setg(&err, "Unable to add CPU: %" PRIi64 - ", max allowed: %d", cpu->id, max_cpus - 1); - goto out; - } -#endif - if (cpu_exists(cpu->id)) { - error_setg(&err, "Unable to add CPU: %" PRIi64 - ", it already exists", cpu->id); - goto out; - } - if (cpu->id != scc->next_cpu_id) { - error_setg(&err, "Unable to add CPU: %" PRIi64 - ", The next available id is %" PRIi64, cpu->id, - scc->next_cpu_id); - goto out; - } - - cpu_exec_init(cs, &err); - if (err != NULL) { - goto out; - } - scc->next_cpu_id++; - -#if !defined(CONFIG_USER_ONLY) - qemu_register_reset(s390_cpu_machine_reset_cb, cpu); -#endif - env->cpu_num = cpu->id; - s390_cpu_gdb_init(cs); - qemu_init_vcpu(cs); -#if !defined(CONFIG_USER_ONLY) - run_on_cpu(cs, s390_do_cpu_full_reset, cs); -#else - cpu_reset(cs); -#endif - - scc->parent_realize(dev, &err); - -#if !defined(CONFIG_USER_ONLY) - if (dev->hotplugged) { - raise_irq_cpu_hotplug(); - } -#endif - -out: - error_propagate(errp, err); -} - -static void s390x_cpu_get_id(Object *obj, Visitor *v, const char *name, - void *opaque, Error **errp) -{ - S390CPU *cpu = S390_CPU(obj); - int64_t value = cpu->id; - - visit_type_int(v, name, &value, errp); -} - -static void s390x_cpu_set_id(Object *obj, Visitor *v, const char *name, - void *opaque, Error **errp) -{ - S390CPU *cpu = S390_CPU(obj); - DeviceState *dev = DEVICE(obj); - const int64_t min = 0; - const int64_t max = UINT32_MAX; - Error *err = NULL; - int64_t value; - - if (dev->realized) { - error_setg(errp, "Attempt to set property '%s' on '%s' after " - "it was realized", name, object_get_typename(obj)); - return; - } - - visit_type_int(v, name, &value, &err); - if (err) { - error_propagate(errp, err); - return; - } - if (value < min || value > max) { - error_setg(errp, "Property %s.%s doesn't take value %" PRId64 - " (minimum: %" PRId64 ", maximum: %" PRId64 ")" , - object_get_typename(obj), name, value, min, max); - return; - } - cpu->id = value; -} - -static void s390_cpu_initfn(Object *obj) -{ - CPUState *cs = CPU(obj); - S390CPU *cpu = S390_CPU(obj); - CPUS390XState *env = &cpu->env; - static bool inited; -#if !defined(CONFIG_USER_ONLY) - struct tm tm; -#endif - - cs->env_ptr = env; - cs->halted = 1; - cs->exception_index = EXCP_HLT; - object_property_add(OBJECT(cpu), "id", "int64_t", s390x_cpu_get_id, - s390x_cpu_set_id, NULL, NULL, NULL); -#if !defined(CONFIG_USER_ONLY) - qemu_get_timedate(&tm, 0); - env->tod_offset = TOD_UNIX_EPOCH + - (time2tod(mktimegm(&tm)) * 1000000000ULL); - env->tod_basetime = 0; - env->tod_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_tod_timer, cpu); - env->cpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_cpu_timer, cpu); - s390_cpu_set_state(CPU_STATE_STOPPED, cpu); -#endif - - if (tcg_enabled() && !inited) { - inited = true; - s390x_translate_init(); - } -} - -static void s390_cpu_finalize(Object *obj) -{ -#if !defined(CONFIG_USER_ONLY) - S390CPU *cpu = S390_CPU(obj); - - qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu); - g_free(cpu->irqstate); -#endif -} - -#if !defined(CONFIG_USER_ONLY) -static bool disabled_wait(CPUState *cpu) -{ - return cpu->halted && !(S390_CPU(cpu)->env.psw.mask & - (PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK)); -} - -static unsigned s390_count_running_cpus(void) -{ - CPUState *cpu; - int nr_running = 0; - - CPU_FOREACH(cpu) { - uint8_t state = S390_CPU(cpu)->env.cpu_state; - if (state == CPU_STATE_OPERATING || - state == CPU_STATE_LOAD) { - if (!disabled_wait(cpu)) { - nr_running++; - } - } - } - - return nr_running; -} - -unsigned int s390_cpu_halt(S390CPU *cpu) -{ - CPUState *cs = CPU(cpu); - trace_cpu_halt(cs->cpu_index); - - if (!cs->halted) { - cs->halted = 1; - cs->exception_index = EXCP_HLT; - } - - return s390_count_running_cpus(); -} - -void s390_cpu_unhalt(S390CPU *cpu) -{ - CPUState *cs = CPU(cpu); - trace_cpu_unhalt(cs->cpu_index); - - if (cs->halted) { - cs->halted = 0; - cs->exception_index = -1; - } -} - -unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu) - { - trace_cpu_set_state(CPU(cpu)->cpu_index, cpu_state); - - switch (cpu_state) { - case CPU_STATE_STOPPED: - case CPU_STATE_CHECK_STOP: - /* halt the cpu for common infrastructure */ - s390_cpu_halt(cpu); - break; - case CPU_STATE_OPERATING: - case CPU_STATE_LOAD: - /* unhalt the cpu for common infrastructure */ - s390_cpu_unhalt(cpu); - break; - default: - error_report("Requested CPU state is not a valid S390 CPU state: %u", - cpu_state); - exit(1); - } - if (kvm_enabled() && cpu->env.cpu_state != cpu_state) { - kvm_s390_set_cpu_state(cpu, cpu_state); - } - cpu->env.cpu_state = cpu_state; - - return s390_count_running_cpus(); -} -#endif - -static gchar *s390_gdb_arch_name(CPUState *cs) -{ - return g_strdup("s390:64-bit"); -} - -static void s390_cpu_class_init(ObjectClass *oc, void *data) -{ - S390CPUClass *scc = S390_CPU_CLASS(oc); - CPUClass *cc = CPU_CLASS(scc); - DeviceClass *dc = DEVICE_CLASS(oc); - - scc->next_cpu_id = 0; - scc->parent_realize = dc->realize; - dc->realize = s390_cpu_realizefn; - - scc->parent_reset = cc->reset; -#if !defined(CONFIG_USER_ONLY) - scc->load_normal = s390_cpu_load_normal; -#endif - scc->cpu_reset = s390_cpu_reset; - scc->initial_cpu_reset = s390_cpu_initial_reset; - cc->reset = s390_cpu_full_reset; - cc->has_work = s390_cpu_has_work; - cc->do_interrupt = s390_cpu_do_interrupt; - cc->dump_state = s390_cpu_dump_state; - cc->set_pc = s390_cpu_set_pc; - cc->gdb_read_register = s390_cpu_gdb_read_register; - cc->gdb_write_register = s390_cpu_gdb_write_register; -#ifdef CONFIG_USER_ONLY - cc->handle_mmu_fault = s390_cpu_handle_mmu_fault; -#else - cc->get_phys_page_debug = s390_cpu_get_phys_page_debug; - cc->vmsd = &vmstate_s390_cpu; - cc->write_elf64_note = s390_cpu_write_elf64_note; - cc->cpu_exec_interrupt = s390_cpu_exec_interrupt; - cc->debug_excp_handler = s390x_cpu_debug_excp_handler; -#endif - cc->disas_set_info = s390_cpu_disas_set_info; - - cc->gdb_num_core_regs = S390_NUM_CORE_REGS; - cc->gdb_core_xml_file = "s390x-core64.xml"; - cc->gdb_arch_name = s390_gdb_arch_name; - - /* - * Reason: s390_cpu_realizefn() calls cpu_exec_init(), which saves - * the object in cpus -> dangling pointer after final - * object_unref(). - */ - dc->cannot_destroy_with_object_finalize_yet = true; -} - -static const TypeInfo s390_cpu_type_info = { - .name = TYPE_S390_CPU, - .parent = TYPE_CPU, - .instance_size = sizeof(S390CPU), - .instance_init = s390_cpu_initfn, - .instance_finalize = s390_cpu_finalize, - .abstract = false, - .class_size = sizeof(S390CPUClass), - .class_init = s390_cpu_class_init, -}; - -static void s390_cpu_register_types(void) -{ - type_register_static(&s390_cpu_type_info); -} - -type_init(s390_cpu_register_types) |