--- /dev/null
+/*
+ * QEMU LatticeMico32 CPU
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * 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>
+ */
+
+#include "cpu.h"
+#include "qemu-common.h"
+
+
+static void lm32_cpu_set_pc(CPUState *cs, vaddr value)
+{
+ LM32CPU *cpu = LM32_CPU(cs);
+
+ cpu->env.pc = value;
+}
+
+/* Sort alphabetically by type name. */
+static gint lm32_cpu_list_compare(gconstpointer a, gconstpointer b)
+{
+ ObjectClass *class_a = (ObjectClass *)a;
+ ObjectClass *class_b = (ObjectClass *)b;
+ const char *name_a, *name_b;
+
+ name_a = object_class_get_name(class_a);
+ name_b = object_class_get_name(class_b);
+ return strcmp(name_a, name_b);
+}
+
+static void lm32_cpu_list_entry(gpointer data, gpointer user_data)
+{
+ ObjectClass *oc = data;
+ CPUListState *s = user_data;
+ const char *typename = object_class_get_name(oc);
+ char *name;
+
+ name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_LM32_CPU));
+ (*s->cpu_fprintf)(s->file, " %s\n", name);
+ g_free(name);
+}
+
+
+void lm32_cpu_list(FILE *f, fprintf_function cpu_fprintf)
+{
+ CPUListState s = {
+ .file = f,
+ .cpu_fprintf = cpu_fprintf,
+ };
+ GSList *list;
+
+ list = object_class_get_list(TYPE_LM32_CPU, false);
+ list = g_slist_sort(list, lm32_cpu_list_compare);
+ (*cpu_fprintf)(f, "Available CPUs:\n");
+ g_slist_foreach(list, lm32_cpu_list_entry, &s);
+ g_slist_free(list);
+}
+
+static void lm32_cpu_init_cfg_reg(LM32CPU *cpu)
+{
+ CPULM32State *env = &cpu->env;
+ uint32_t cfg = 0;
+
+ if (cpu->features & LM32_FEATURE_MULTIPLY) {
+ cfg |= CFG_M;
+ }
+
+ if (cpu->features & LM32_FEATURE_DIVIDE) {
+ cfg |= CFG_D;
+ }
+
+ if (cpu->features & LM32_FEATURE_SHIFT) {
+ cfg |= CFG_S;
+ }
+
+ if (cpu->features & LM32_FEATURE_SIGN_EXTEND) {
+ cfg |= CFG_X;
+ }
+
+ if (cpu->features & LM32_FEATURE_I_CACHE) {
+ cfg |= CFG_IC;
+ }
+
+ if (cpu->features & LM32_FEATURE_D_CACHE) {
+ cfg |= CFG_DC;
+ }
+
+ if (cpu->features & LM32_FEATURE_CYCLE_COUNT) {
+ cfg |= CFG_CC;
+ }
+
+ cfg |= (cpu->num_interrupts << CFG_INT_SHIFT);
+ cfg |= (cpu->num_breakpoints << CFG_BP_SHIFT);
+ cfg |= (cpu->num_watchpoints << CFG_WP_SHIFT);
+ cfg |= (cpu->revision << CFG_REV_SHIFT);
+
+ env->cfg = cfg;
+}
+
+static bool lm32_cpu_has_work(CPUState *cs)
+{
+ return cs->interrupt_request & CPU_INTERRUPT_HARD;
+}
+
+/* CPUClass::reset() */
+static void lm32_cpu_reset(CPUState *s)
+{
+ LM32CPU *cpu = LM32_CPU(s);
+ LM32CPUClass *lcc = LM32_CPU_GET_CLASS(cpu);
+ CPULM32State *env = &cpu->env;
+
+ lcc->parent_reset(s);
+
+ /* reset cpu state */
+ memset(env, 0, offsetof(CPULM32State, eba));
+
+ lm32_cpu_init_cfg_reg(cpu);
+ tlb_flush(s, 1);
+}
+
+static void lm32_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+ CPUState *cs = CPU(dev);
+ LM32CPUClass *lcc = LM32_CPU_GET_CLASS(dev);
+
+ cpu_reset(cs);
+
+ qemu_init_vcpu(cs);
+
+ lcc->parent_realize(dev, errp);
+}
+
+static void lm32_cpu_initfn(Object *obj)
+{
+ CPUState *cs = CPU(obj);
+ LM32CPU *cpu = LM32_CPU(obj);
+ CPULM32State *env = &cpu->env;
+ static bool tcg_initialized;
+
+ cs->env_ptr = env;
+ cpu_exec_init(cs, &error_abort);
+
+ env->flags = 0;
+
+ if (tcg_enabled() && !tcg_initialized) {
+ tcg_initialized = true;
+ lm32_translate_init();
+ }
+}
+
+static void lm32_basic_cpu_initfn(Object *obj)
+{
+ LM32CPU *cpu = LM32_CPU(obj);
+
+ cpu->revision = 3;
+ cpu->num_interrupts = 32;
+ cpu->num_breakpoints = 4;
+ cpu->num_watchpoints = 4;
+ cpu->features = LM32_FEATURE_SHIFT
+ | LM32_FEATURE_SIGN_EXTEND
+ | LM32_FEATURE_CYCLE_COUNT;
+}
+
+static void lm32_standard_cpu_initfn(Object *obj)
+{
+ LM32CPU *cpu = LM32_CPU(obj);
+
+ cpu->revision = 3;
+ cpu->num_interrupts = 32;
+ cpu->num_breakpoints = 4;
+ cpu->num_watchpoints = 4;
+ cpu->features = LM32_FEATURE_MULTIPLY
+ | LM32_FEATURE_DIVIDE
+ | LM32_FEATURE_SHIFT
+ | LM32_FEATURE_SIGN_EXTEND
+ | LM32_FEATURE_I_CACHE
+ | LM32_FEATURE_CYCLE_COUNT;
+}
+
+static void lm32_full_cpu_initfn(Object *obj)
+{
+ LM32CPU *cpu = LM32_CPU(obj);
+
+ cpu->revision = 3;
+ cpu->num_interrupts = 32;
+ cpu->num_breakpoints = 4;
+ cpu->num_watchpoints = 4;
+ cpu->features = LM32_FEATURE_MULTIPLY
+ | LM32_FEATURE_DIVIDE
+ | LM32_FEATURE_SHIFT
+ | LM32_FEATURE_SIGN_EXTEND
+ | LM32_FEATURE_I_CACHE
+ | LM32_FEATURE_D_CACHE
+ | LM32_FEATURE_CYCLE_COUNT;
+}
+
+typedef struct LM32CPUInfo {
+ const char *name;
+ void (*initfn)(Object *obj);
+} LM32CPUInfo;
+
+static const LM32CPUInfo lm32_cpus[] = {
+ {
+ .name = "lm32-basic",
+ .initfn = lm32_basic_cpu_initfn,
+ },
+ {
+ .name = "lm32-standard",
+ .initfn = lm32_standard_cpu_initfn,
+ },
+ {
+ .name = "lm32-full",
+ .initfn = lm32_full_cpu_initfn,
+ },
+};
+
+static ObjectClass *lm32_cpu_class_by_name(const char *cpu_model)
+{
+ ObjectClass *oc;
+ char *typename;
+
+ if (cpu_model == NULL) {
+ return NULL;
+ }
+
+ typename = g_strdup_printf("%s-" TYPE_LM32_CPU, cpu_model);
+ oc = object_class_by_name(typename);
+ g_free(typename);
+ if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_LM32_CPU) ||
+ object_class_is_abstract(oc))) {
+ oc = NULL;
+ }
+ return oc;
+}
+
+static void lm32_cpu_class_init(ObjectClass *oc, void *data)
+{
+ LM32CPUClass *lcc = LM32_CPU_CLASS(oc);
+ CPUClass *cc = CPU_CLASS(oc);
+ DeviceClass *dc = DEVICE_CLASS(oc);
+
+ lcc->parent_realize = dc->realize;
+ dc->realize = lm32_cpu_realizefn;
+
+ lcc->parent_reset = cc->reset;
+ cc->reset = lm32_cpu_reset;
+
+ cc->class_by_name = lm32_cpu_class_by_name;
+ cc->has_work = lm32_cpu_has_work;
+ cc->do_interrupt = lm32_cpu_do_interrupt;
+ cc->cpu_exec_interrupt = lm32_cpu_exec_interrupt;
+ cc->dump_state = lm32_cpu_dump_state;
+ cc->set_pc = lm32_cpu_set_pc;
+ cc->gdb_read_register = lm32_cpu_gdb_read_register;
+ cc->gdb_write_register = lm32_cpu_gdb_write_register;
+#ifdef CONFIG_USER_ONLY
+ cc->handle_mmu_fault = lm32_cpu_handle_mmu_fault;
+#else
+ cc->get_phys_page_debug = lm32_cpu_get_phys_page_debug;
+ cc->vmsd = &vmstate_lm32_cpu;
+#endif
+ cc->gdb_num_core_regs = 32 + 7;
+ cc->gdb_stop_before_watchpoint = true;
+ cc->debug_excp_handler = lm32_debug_excp_handler;
+}
+
+static void lm32_register_cpu_type(const LM32CPUInfo *info)
+{
+ TypeInfo type_info = {
+ .parent = TYPE_LM32_CPU,
+ .instance_init = info->initfn,
+ };
+
+ type_info.name = g_strdup_printf("%s-" TYPE_LM32_CPU, info->name);
+ type_register(&type_info);
+ g_free((void *)type_info.name);
+}
+
+static const TypeInfo lm32_cpu_type_info = {
+ .name = TYPE_LM32_CPU,
+ .parent = TYPE_CPU,
+ .instance_size = sizeof(LM32CPU),
+ .instance_init = lm32_cpu_initfn,
+ .abstract = true,
+ .class_size = sizeof(LM32CPUClass),
+ .class_init = lm32_cpu_class_init,
+};
+
+static void lm32_cpu_register_types(void)
+{
+ int i;
+
+ type_register_static(&lm32_cpu_type_info);
+ for (i = 0; i < ARRAY_SIZE(lm32_cpus); i++) {
+ lm32_register_cpu_type(&lm32_cpus[i]);
+ }
+}
+
+type_init(lm32_cpu_register_types)
Code Review / kvmfornfv.git / blobdiff