diff options
Diffstat (limited to 'target/tricore/cpu.c')
| -rw-r--r-- | target/tricore/cpu.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c new file mode 100644 index 0000000000..785b76bd3a --- /dev/null +++ b/target/tricore/cpu.c @@ -0,0 +1,220 @@ +/* + * TriCore emulation for qemu: main translation routines. + * + * Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn + * + * 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 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/>. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "cpu.h" +#include "qemu-common.h" +#include "exec/exec-all.h" + +static inline void set_feature(CPUTriCoreState *env, int feature) +{ + env->features |= 1ULL << feature; +} + +static void tricore_cpu_set_pc(CPUState *cs, vaddr value) +{ + TriCoreCPU *cpu = TRICORE_CPU(cs); + CPUTriCoreState *env = &cpu->env; + + env->PC = value & ~(target_ulong)1; +} + +static void tricore_cpu_synchronize_from_tb(CPUState *cs, + TranslationBlock *tb) +{ + TriCoreCPU *cpu = TRICORE_CPU(cs); + CPUTriCoreState *env = &cpu->env; + + env->PC = tb->pc; +} + +static void tricore_cpu_reset(CPUState *s) +{ + TriCoreCPU *cpu = TRICORE_CPU(s); + TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(cpu); + CPUTriCoreState *env = &cpu->env; + + tcc->parent_reset(s); + + tlb_flush(s, 1); + + cpu_state_reset(env); +} + +static bool tricore_cpu_has_work(CPUState *cs) +{ + return true; +} + +static void tricore_cpu_realizefn(DeviceState *dev, Error **errp) +{ + CPUState *cs = CPU(dev); + TriCoreCPU *cpu = TRICORE_CPU(dev); + TriCoreCPUClass *tcc = TRICORE_CPU_GET_CLASS(dev); + CPUTriCoreState *env = &cpu->env; + Error *local_err = NULL; + + cpu_exec_realizefn(cs, &local_err); + if (local_err != NULL) { + error_propagate(errp, local_err); + return; + } + + /* Some features automatically imply others */ + if (tricore_feature(env, TRICORE_FEATURE_161)) { + set_feature(env, TRICORE_FEATURE_16); + } + + if (tricore_feature(env, TRICORE_FEATURE_16)) { + set_feature(env, TRICORE_FEATURE_131); + } + if (tricore_feature(env, TRICORE_FEATURE_131)) { + set_feature(env, TRICORE_FEATURE_13); + } + cpu_reset(cs); + qemu_init_vcpu(cs); + + tcc->parent_realize(dev, errp); +} + + +static void tricore_cpu_initfn(Object *obj) +{ + CPUState *cs = CPU(obj); + TriCoreCPU *cpu = TRICORE_CPU(obj); + CPUTriCoreState *env = &cpu->env; + + cs->env_ptr = env; + + if (tcg_enabled()) { + tricore_tcg_init(); + } +} + +static ObjectClass *tricore_cpu_class_by_name(const char *cpu_model) +{ + ObjectClass *oc; + char *typename; + + if (!cpu_model) { + return NULL; + } + + typename = g_strdup_printf("%s-" TYPE_TRICORE_CPU, cpu_model); + oc = object_class_by_name(typename); + g_free(typename); + if (!oc || !object_class_dynamic_cast(oc, TYPE_TRICORE_CPU) || + object_class_is_abstract(oc)) { + return NULL; + } + return oc; +} + +static void tc1796_initfn(Object *obj) +{ + TriCoreCPU *cpu = TRICORE_CPU(obj); + + set_feature(&cpu->env, TRICORE_FEATURE_13); +} + +static void tc1797_initfn(Object *obj) +{ + TriCoreCPU *cpu = TRICORE_CPU(obj); + + set_feature(&cpu->env, TRICORE_FEATURE_131); +} + +static void tc27x_initfn(Object *obj) +{ + TriCoreCPU *cpu = TRICORE_CPU(obj); + + set_feature(&cpu->env, TRICORE_FEATURE_161); +} + +typedef struct TriCoreCPUInfo { + const char *name; + void (*initfn)(Object *obj); + void (*class_init)(ObjectClass *oc, void *data); +} TriCoreCPUInfo; + +static const TriCoreCPUInfo tricore_cpus[] = { + { .name = "tc1796", .initfn = tc1796_initfn }, + { .name = "tc1797", .initfn = tc1797_initfn }, + { .name = "tc27x", .initfn = tc27x_initfn }, + { .name = NULL } +}; + +static void tricore_cpu_class_init(ObjectClass *c, void *data) +{ + TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c); + CPUClass *cc = CPU_CLASS(c); + DeviceClass *dc = DEVICE_CLASS(c); + + mcc->parent_realize = dc->realize; + dc->realize = tricore_cpu_realizefn; + + mcc->parent_reset = cc->reset; + cc->reset = tricore_cpu_reset; + cc->class_by_name = tricore_cpu_class_by_name; + cc->has_work = tricore_cpu_has_work; + + cc->dump_state = tricore_cpu_dump_state; + cc->set_pc = tricore_cpu_set_pc; + cc->synchronize_from_tb = tricore_cpu_synchronize_from_tb; +} + +static void cpu_register(const TriCoreCPUInfo *info) +{ + TypeInfo type_info = { + .parent = TYPE_TRICORE_CPU, + .instance_size = sizeof(TriCoreCPU), + .instance_init = info->initfn, + .class_size = sizeof(TriCoreCPUClass), + .class_init = info->class_init, + }; + + type_info.name = g_strdup_printf("%s-" TYPE_TRICORE_CPU, info->name); + type_register(&type_info); + g_free((void *)type_info.name); +} + +static const TypeInfo tricore_cpu_type_info = { + .name = TYPE_TRICORE_CPU, + .parent = TYPE_CPU, + .instance_size = sizeof(TriCoreCPU), + .instance_init = tricore_cpu_initfn, + .abstract = true, + .class_size = sizeof(TriCoreCPUClass), + .class_init = tricore_cpu_class_init, +}; + +static void tricore_cpu_register_types(void) +{ + const TriCoreCPUInfo *info = tricore_cpus; + + type_register_static(&tricore_cpu_type_info); + + while (info->name) { + cpu_register(info); + info++; + } +} + +type_init(tricore_cpu_register_types) |