X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Ftarget-cris%2Fcpu.c;fp=qemu%2Ftarget-cris%2Fcpu.c;h=b17e849e2a886e7116a895d1e5aada7fb5d1c348;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/target-cris/cpu.c b/qemu/target-cris/cpu.c
new file mode 100644
index 000000000..b17e849e2
--- /dev/null
+++ b/qemu/target-cris/cpu.c
@@ -0,0 +1,333 @@
+/*
+ * QEMU CRIS CPU
+ *
+ * Copyright (c) 2008 AXIS Communications AB
+ * Written by Edgar E. Iglesias.
+ *
+ * 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"
+#include "mmu.h"
+
+
+static void cris_cpu_set_pc(CPUState *cs, vaddr value)
+{
+    CRISCPU *cpu = CRIS_CPU(cs);
+
+    cpu->env.pc = value;
+}
+
+static bool cris_cpu_has_work(CPUState *cs)
+{
+    return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI);
+}
+
+/* CPUClass::reset() */
+static void cris_cpu_reset(CPUState *s)
+{
+    CRISCPU *cpu = CRIS_CPU(s);
+    CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(cpu);
+    CPUCRISState *env = &cpu->env;
+    uint32_t vr;
+
+    ccc->parent_reset(s);
+
+    vr = env->pregs[PR_VR];
+    memset(env, 0, offsetof(CPUCRISState, load_info));
+    env->pregs[PR_VR] = vr;
+    tlb_flush(s, 1);
+
+#if defined(CONFIG_USER_ONLY)
+    /* start in user mode with interrupts enabled.  */
+    env->pregs[PR_CCS] |= U_FLAG | I_FLAG | P_FLAG;
+#else
+    cris_mmu_init(env);
+    env->pregs[PR_CCS] = 0;
+#endif
+}
+
+static ObjectClass *cris_cpu_class_by_name(const char *cpu_model)
+{
+    ObjectClass *oc;
+    char *typename;
+
+    if (cpu_model == NULL) {
+        return NULL;
+    }
+
+#if defined(CONFIG_USER_ONLY)
+    if (strcasecmp(cpu_model, "any") == 0) {
+        return object_class_by_name("crisv32-" TYPE_CRIS_CPU);
+    }
+#endif
+
+    typename = g_strdup_printf("%s-" TYPE_CRIS_CPU, cpu_model);
+    oc = object_class_by_name(typename);
+    g_free(typename);
+    if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_CRIS_CPU) ||
+                       object_class_is_abstract(oc))) {
+        oc = NULL;
+    }
+    return oc;
+}
+
+CRISCPU *cpu_cris_init(const char *cpu_model)
+{
+    return CRIS_CPU(cpu_generic_init(TYPE_CRIS_CPU, cpu_model));
+}
+
+/* Sort alphabetically by VR. */
+static gint cris_cpu_list_compare(gconstpointer a, gconstpointer b)
+{
+    CRISCPUClass *ccc_a = CRIS_CPU_CLASS(a);
+    CRISCPUClass *ccc_b = CRIS_CPU_CLASS(b);
+
+    /*  */
+    if (ccc_a->vr > ccc_b->vr) {
+        return 1;
+    } else if (ccc_a->vr < ccc_b->vr) {
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+static void cris_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_CRIS_CPU));
+    (*s->cpu_fprintf)(s->file, "  %s\n", name);
+    g_free(name);
+}
+
+void cris_cpu_list(FILE *f, fprintf_function cpu_fprintf)
+{
+    CPUListState s = {
+        .file = f,
+        .cpu_fprintf = cpu_fprintf,
+    };
+    GSList *list;
+
+    list = object_class_get_list(TYPE_CRIS_CPU, false);
+    list = g_slist_sort(list, cris_cpu_list_compare);
+    (*cpu_fprintf)(f, "Available CPUs:\n");
+    g_slist_foreach(list, cris_cpu_list_entry, &s);
+    g_slist_free(list);
+}
+
+static void cris_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+    CPUState *cs = CPU(dev);
+    CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(dev);
+
+    cpu_reset(cs);
+    qemu_init_vcpu(cs);
+
+    ccc->parent_realize(dev, errp);
+}
+
+#ifndef CONFIG_USER_ONLY
+static void cris_cpu_set_irq(void *opaque, int irq, int level)
+{
+    CRISCPU *cpu = opaque;
+    CPUState *cs = CPU(cpu);
+    int type = irq == CRIS_CPU_IRQ ? CPU_INTERRUPT_HARD : CPU_INTERRUPT_NMI;
+
+    if (level) {
+        cpu_interrupt(cs, type);
+    } else {
+        cpu_reset_interrupt(cs, type);
+    }
+}
+#endif
+
+static void cris_disas_set_info(CPUState *cpu, disassemble_info *info)
+{
+    CRISCPU *cc = CRIS_CPU(cpu);
+    CPUCRISState *env = &cc->env;
+
+    if (env->pregs[PR_VR] != 32) {
+        info->mach = bfd_mach_cris_v0_v10;
+        info->print_insn = print_insn_crisv10;
+    } else {
+        info->mach = bfd_mach_cris_v32;
+        info->print_insn = print_insn_crisv32;
+    }
+}
+
+static void cris_cpu_initfn(Object *obj)
+{
+    CPUState *cs = CPU(obj);
+    CRISCPU *cpu = CRIS_CPU(obj);
+    CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(obj);
+    CPUCRISState *env = &cpu->env;
+    static bool tcg_initialized;
+
+    cs->env_ptr = env;
+    cpu_exec_init(cs, &error_abort);
+
+    env->pregs[PR_VR] = ccc->vr;
+
+#ifndef CONFIG_USER_ONLY
+    /* IRQ and NMI lines.  */
+    qdev_init_gpio_in(DEVICE(cpu), cris_cpu_set_irq, 2);
+#endif
+
+    if (tcg_enabled() && !tcg_initialized) {
+        tcg_initialized = true;
+        if (env->pregs[PR_VR] < 32) {
+            cris_initialize_crisv10_tcg();
+        } else {
+            cris_initialize_tcg();
+        }
+    }
+}
+
+static void crisv8_cpu_class_init(ObjectClass *oc, void *data)
+{
+    CPUClass *cc = CPU_CLASS(oc);
+    CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
+
+    ccc->vr = 8;
+    cc->do_interrupt = crisv10_cpu_do_interrupt;
+    cc->gdb_read_register = crisv10_cpu_gdb_read_register;
+}
+
+static void crisv9_cpu_class_init(ObjectClass *oc, void *data)
+{
+    CPUClass *cc = CPU_CLASS(oc);
+    CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
+
+    ccc->vr = 9;
+    cc->do_interrupt = crisv10_cpu_do_interrupt;
+    cc->gdb_read_register = crisv10_cpu_gdb_read_register;
+}
+
+static void crisv10_cpu_class_init(ObjectClass *oc, void *data)
+{
+    CPUClass *cc = CPU_CLASS(oc);
+    CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
+
+    ccc->vr = 10;
+    cc->do_interrupt = crisv10_cpu_do_interrupt;
+    cc->gdb_read_register = crisv10_cpu_gdb_read_register;
+}
+
+static void crisv11_cpu_class_init(ObjectClass *oc, void *data)
+{
+    CPUClass *cc = CPU_CLASS(oc);
+    CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
+
+    ccc->vr = 11;
+    cc->do_interrupt = crisv10_cpu_do_interrupt;
+    cc->gdb_read_register = crisv10_cpu_gdb_read_register;
+}
+
+static void crisv32_cpu_class_init(ObjectClass *oc, void *data)
+{
+    CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
+
+    ccc->vr = 32;
+}
+
+#define TYPE(model) model "-" TYPE_CRIS_CPU
+
+static const TypeInfo cris_cpu_model_type_infos[] = {
+    {
+        .name = TYPE("crisv8"),
+        .parent = TYPE_CRIS_CPU,
+        .class_init = crisv8_cpu_class_init,
+    }, {
+        .name = TYPE("crisv9"),
+        .parent = TYPE_CRIS_CPU,
+        .class_init = crisv9_cpu_class_init,
+    }, {
+        .name = TYPE("crisv10"),
+        .parent = TYPE_CRIS_CPU,
+        .class_init = crisv10_cpu_class_init,
+    }, {
+        .name = TYPE("crisv11"),
+        .parent = TYPE_CRIS_CPU,
+        .class_init = crisv11_cpu_class_init,
+    }, {
+        .name = TYPE("crisv32"),
+        .parent = TYPE_CRIS_CPU,
+        .class_init = crisv32_cpu_class_init,
+    }
+};
+
+#undef TYPE
+
+static void cris_cpu_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+    CPUClass *cc = CPU_CLASS(oc);
+    CRISCPUClass *ccc = CRIS_CPU_CLASS(oc);
+
+    ccc->parent_realize = dc->realize;
+    dc->realize = cris_cpu_realizefn;
+
+    ccc->parent_reset = cc->reset;
+    cc->reset = cris_cpu_reset;
+
+    cc->class_by_name = cris_cpu_class_by_name;
+    cc->has_work = cris_cpu_has_work;
+    cc->do_interrupt = cris_cpu_do_interrupt;
+    cc->cpu_exec_interrupt = cris_cpu_exec_interrupt;
+    cc->dump_state = cris_cpu_dump_state;
+    cc->set_pc = cris_cpu_set_pc;
+    cc->gdb_read_register = cris_cpu_gdb_read_register;
+    cc->gdb_write_register = cris_cpu_gdb_write_register;
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = cris_cpu_handle_mmu_fault;
+#else
+    cc->get_phys_page_debug = cris_cpu_get_phys_page_debug;
+#endif
+
+    cc->gdb_num_core_regs = 49;
+    cc->gdb_stop_before_watchpoint = true;
+
+    cc->disas_set_info = cris_disas_set_info;
+}
+
+static const TypeInfo cris_cpu_type_info = {
+    .name = TYPE_CRIS_CPU,
+    .parent = TYPE_CPU,
+    .instance_size = sizeof(CRISCPU),
+    .instance_init = cris_cpu_initfn,
+    .abstract = true,
+    .class_size = sizeof(CRISCPUClass),
+    .class_init = cris_cpu_class_init,
+};
+
+static void cris_cpu_register_types(void)
+{
+    int i;
+
+    type_register_static(&cris_cpu_type_info);
+    for (i = 0; i < ARRAY_SIZE(cris_cpu_model_type_infos); i++) {
+        type_register_static(&cris_cpu_model_type_infos[i]);
+    }
+}
+
+type_init(cris_cpu_register_types)