Add moxie target code

Signed-off-by: Anthony Green <green@moxielogic.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 167 insertions, 0 deletions

diff --git a/target-moxie/cpu.h b/target-moxie/cpu.h
new file mode 100644
index 0000000000..b96236f76e
--- /dev/null
+++ b/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 */