Add moxie target code

Signed-off-by: Anthony Green <[email protected]>
Signed-off-by: Blue Swirl <[email protected]>

target-moxie/Makefile.objs

@@ -0,0 +1,2 @@
+obj-y += translate.o helper.o machine.o cpu.o machine.o
+obj-$(CONFIG_SOFTMMU) += mmu.o

target-moxie/cpu.c

@@ -0,0 +1,172 @@
+/*
+ * QEMU Moxie CPU
+ *
+ * Copyright (c) 2013 Anthony Green
+ *
+ * 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 General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "cpu.h"
+#include "qemu-common.h"
+#include "migration/vmstate.h"
+#include "machine.h"
+
+static void moxie_cpu_reset(CPUState *s)
+{
+    MoxieCPU *cpu = MOXIE_CPU(s);
+    MoxieCPUClass *mcc = MOXIE_CPU_GET_CLASS(cpu);
+    CPUMoxieState *env = &cpu->env;
+
+    if (qemu_loglevel_mask(CPU_LOG_RESET)) {
+        qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
+        log_cpu_state(env, 0);
+    }
+
+    mcc->parent_reset(s);
+
+    memset(env, 0, offsetof(CPUMoxieState, breakpoints));
+    env->pc = 0x1000;
+
+    tlb_flush(env, 1);
+}
+
+static void moxie_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+    MoxieCPU *cpu = MOXIE_CPU(dev);
+    MoxieCPUClass *occ = MOXIE_CPU_GET_CLASS(dev);
+
+    qemu_init_vcpu(&cpu->env);
+    cpu_reset(CPU(cpu));
+
+    occ->parent_realize(dev, errp);
+}
+
+static void moxie_cpu_initfn(Object *obj)
+{
+    CPUState *cs = CPU(obj);
+    MoxieCPU *cpu = MOXIE_CPU(obj);
+    static int inited;
+
+    cs->env_ptr = &cpu->env;
+    cpu_exec_init(&cpu->env);
+
+    if (tcg_enabled() && !inited) {
+        inited = 1;
+        moxie_translate_init();
+    }
+}
+
+static ObjectClass *moxie_cpu_class_by_name(const char *cpu_model)
+{
+    ObjectClass *oc;
+
+    if (cpu_model == NULL) {
+        return NULL;
+    }
+
+    oc = object_class_by_name(cpu_model);
+    if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_MOXIE_CPU) ||
+                       object_class_is_abstract(oc))) {
+        return NULL;
+    }
+    return oc;
+}
+
+static void moxie_cpu_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+    CPUClass *cc = CPU_CLASS(oc);
+    MoxieCPUClass *mcc = MOXIE_CPU_CLASS(oc);
+
+    mcc->parent_realize = dc->realize;
+    dc->realize = moxie_cpu_realizefn;
+
+    mcc->parent_reset = cc->reset;
+    cc->reset = moxie_cpu_reset;
+
+    cc->class_by_name = moxie_cpu_class_by_name;
+
+    dc->vmsd = &vmstate_moxie_cpu;
+}
+
+static void moxielite_initfn(Object *obj)
+{
+    /* Set cpu feature flags */
+}
+
+static void moxie_any_initfn(Object *obj)
+{
+    /* Set cpu feature flags */
+}
+
+typedef struct MoxieCPUInfo {
+    const char *name;
+    void (*initfn)(Object *obj);
+} MoxieCPUInfo;
+
+static const MoxieCPUInfo moxie_cpus[] = {
+    { .name = "MoxieLite",      .initfn = moxielite_initfn },
+    { .name = "any",            .initfn = moxie_any_initfn },
+};
+
+MoxieCPU *cpu_moxie_init(const char *cpu_model)
+{
+    MoxieCPU *cpu;
+    ObjectClass *oc;
+
+    oc = moxie_cpu_class_by_name(cpu_model);
+    if (oc == NULL) {
+        return NULL;
+    }
+    cpu = MOXIE_CPU(object_new(object_class_get_name(oc)));
+    cpu->env.cpu_model_str = cpu_model;
+
+    object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
+
+    return cpu;
+}
+
+static void cpu_register(const MoxieCPUInfo *info)
+{
+    TypeInfo type_info = {
+        .parent = TYPE_MOXIE_CPU,
+        .instance_size = sizeof(MoxieCPU),
+        .instance_init = info->initfn,
+        .class_size = sizeof(MoxieCPUClass),
+    };
+
+    type_info.name = g_strdup_printf("%s-" TYPE_MOXIE_CPU, info->name);
+    type_register(&type_info);
+    g_free((void *)type_info.name);
+}
+
+static const TypeInfo moxie_cpu_type_info = {
+    .name = TYPE_MOXIE_CPU,
+    .parent = TYPE_CPU,
+    .instance_size = sizeof(MoxieCPU),
+    .instance_init = moxie_cpu_initfn,
+    .class_size = sizeof(MoxieCPUClass),
+    .class_init = moxie_cpu_class_init,
+};
+
+static void moxie_cpu_register_types(void)
+{
+    int i;
+    type_register_static(&moxie_cpu_type_info);
+    for (i = 0; i < ARRAY_SIZE(moxie_cpus); i++) {
+        cpu_register(&moxie_cpus[i]);
+    }
+}
+
+type_init(moxie_cpu_register_types)

target-moxie/cpu.h

@@ -0,0 +1,167 @@
+/*
+ *  Moxie emulation
+ *
+ *  Copyright (c) 2008, 2010, 2013 Anthony Green
+ *
+ * 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 General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef _CPU_MOXIE_H
+#define _CPU_MOXIE_H
+
+#include "config.h"
+#include "qemu-common.h"
+
+#define TARGET_LONG_BITS 32
+
+#define CPUArchState struct CPUMoxieState
+
+#define TARGET_HAS_ICE 1
+
+#define CPU_SAVE_VERSION 1
+
+#define ELF_MACHINE     0xFEED /* EM_MOXIE */
+
+#define MOXIE_EX_DIV0        0
+#define MOXIE_EX_BAD         1
+#define MOXIE_EX_IRQ         2
+#define MOXIE_EX_SWI         3
+#define MOXIE_EX_MMU_MISS    4
+#define MOXIE_EX_BREAK      16
+
+#include "exec/cpu-defs.h"
+#include "fpu/softfloat.h"
+
+#define TARGET_PAGE_BITS 12     /* 4k */
+
+#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_VIRT_ADDR_SPACE_BITS 32
+
+#define NB_MMU_MODES 1
+
+typedef struct CPUMoxieState {
+
+    uint32_t flags;               /* general execution flags */
+    uint32_t gregs[16];           /* general registers */
+    uint32_t sregs[256];          /* special registers */
+    uint32_t pc;                  /* program counter */
+    /* Instead of saving the cc value, we save the cmp arguments
+       and compute cc on demand.  */
+    uint32_t cc_a;                /* reg a for condition code calculation */
+    uint32_t cc_b;                /* reg b for condition code calculation */
+
+    void *irq[8];
+
+    CPU_COMMON
+
+} CPUMoxieState;
+
+#include "qom/cpu.h"
+
+#define TYPE_MOXIE_CPU "moxie-cpu"
+
+#define MOXIE_CPU_CLASS(klass) \
+    OBJECT_CLASS_CHECK(MoxieCPUClass, (klass), TYPE_MOXIE_CPU)
+#define MOXIE_CPU(obj) \
+    OBJECT_CHECK(MoxieCPU, (obj), TYPE_MOXIE_CPU)
+#define MOXIE_CPU_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(MoxieCPUClass, (obj), TYPE_MOXIE_CPU)
+
+/**
+ * MoxieCPUClass:
+ * @parent_reset: The parent class' reset handler.
+ *
+ * A Moxie CPU model.
+ */
+typedef struct MoxieCPUClass {
+    /*< private >*/
+    CPUClass parent_class;
+    /*< public >*/
+
+    DeviceRealize parent_realize;
+    void (*parent_reset)(CPUState *cpu);
+} MoxieCPUClass;
+
+/**
+ * MoxieCPU:
+ * @env: #CPUMoxieState
+ *
+ * A Moxie CPU.
+ */
+typedef struct MoxieCPU {
+    /*< private >*/
+    CPUState parent_obj;
+    /*< public >*/
+
+    CPUMoxieState env;
+} MoxieCPU;
+
+static inline MoxieCPU *moxie_env_get_cpu(CPUMoxieState *env)
+{
+    return MOXIE_CPU(container_of(env, MoxieCPU, env));
+}
+
+#define ENV_GET_CPU(e) CPU(moxie_env_get_cpu(e))
+
+#define ENV_OFFSET offsetof(MoxieCPU, env)
+
+MoxieCPU *cpu_moxie_init(const char *cpu_model);
+int cpu_moxie_exec(CPUMoxieState *s);
+void do_interrupt(CPUMoxieState *env);
+void moxie_translate_init(void);
+int cpu_moxie_signal_handler(int host_signum, void *pinfo,
+                             void *puc);
+
+static inline CPUMoxieState *cpu_init(const char *cpu_model)
+{
+    MoxieCPU *cpu = cpu_moxie_init(cpu_model);
+    if (cpu == NULL) {
+        return NULL;
+    }
+    return &cpu->env;
+}
+
+#define cpu_exec cpu_moxie_exec
+#define cpu_gen_code cpu_moxie_gen_code
+#define cpu_signal_handler cpu_moxie_signal_handler
+
+static inline int cpu_mmu_index(CPUMoxieState *env)
+{
+    return 0;
+}
+
+#include "exec/cpu-all.h"
+#include "exec/exec-all.h"
+
+static inline void cpu_pc_from_tb(CPUMoxieState *env, TranslationBlock *tb)
+{
+    env->pc = tb->pc;
+}
+
+static inline void cpu_get_tb_cpu_state(CPUMoxieState *env, target_ulong *pc,
+                                        target_ulong *cs_base, int *flags)
+{
+    *pc = env->pc;
+    *cs_base = 0;
+    *flags = 0;
+}
+
+static inline int cpu_has_work(CPUState *cpu)
+{
+    return cpu->interrupt_request & CPU_INTERRUPT_HARD;
+}
+
+int cpu_moxie_handle_mmu_fault(CPUMoxieState *env, target_ulong address,
+                               int rw, int mmu_idx);
+
+#endif /* _CPU_MOXIE_H */