Initial import of abandoned HQEMU version 2.5.2HEADmaster

10 files changed, 3724 insertions, 0 deletions

diff --git a/src/target-unicore32/Makefile.objs b/src/target-unicore32/Makefile.objs
new file mode 100644
index 0000000..6b41b1e
--- /dev/null
+++ b/src/target-unicore32/Makefile.objs
@@ -0,0 +1,4 @@
+obj-y += translate.o op_helper.o helper.o cpu.o
+obj-y += ucf64_helper.o
+
+obj-$(CONFIG_SOFTMMU) += softmmu.o
diff --git a/src/target-unicore32/cpu-qom.h b/src/target-unicore32/cpu-qom.h
new file mode 100644
index 0000000..ea65b83
--- /dev/null
+++ b/src/target-unicore32/cpu-qom.h
@@ -0,0 +1,69 @@
+/*
+ * QEMU UniCore32 CPU
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
+ */
+#ifndef QEMU_UC32_CPU_QOM_H
+#define QEMU_UC32_CPU_QOM_H
+
+#include "qom/cpu.h"
+#include "cpu.h"
+
+#define TYPE_UNICORE32_CPU "unicore32-cpu"
+
+#define UNICORE32_CPU_CLASS(klass) \
+    OBJECT_CLASS_CHECK(UniCore32CPUClass, (klass), TYPE_UNICORE32_CPU)
+#define UNICORE32_CPU(obj) \
+    OBJECT_CHECK(UniCore32CPU, (obj), TYPE_UNICORE32_CPU)
+#define UNICORE32_CPU_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(UniCore32CPUClass, (obj), TYPE_UNICORE32_CPU)
+
+/**
+ * UniCore32CPUClass:
+ * @parent_realize: The parent class' realize handler.
+ *
+ * A UniCore32 CPU model.
+ */
+typedef struct UniCore32CPUClass {
+    /*< private >*/
+    CPUClass parent_class;
+    /*< public >*/
+
+    DeviceRealize parent_realize;
+} UniCore32CPUClass;
+
+/**
+ * UniCore32CPU:
+ * @env: #CPUUniCore32State
+ *
+ * A UniCore32 CPU.
+ */
+typedef struct UniCore32CPU {
+    /*< private >*/
+    CPUState parent_obj;
+    /*< public >*/
+
+    CPUUniCore32State env;
+} UniCore32CPU;
+
+static inline UniCore32CPU *uc32_env_get_cpu(CPUUniCore32State *env)
+{
+    return container_of(env, UniCore32CPU, env);
+}
+
+#define ENV_GET_CPU(e) CPU(uc32_env_get_cpu(e))
+
+#define ENV_OFFSET offsetof(UniCore32CPU, env)
+
+void uc32_cpu_do_interrupt(CPUState *cpu);
+bool uc32_cpu_exec_interrupt(CPUState *cpu, int int_req);
+void uc32_cpu_dump_state(CPUState *cpu, FILE *f,
+                         fprintf_function cpu_fprintf, int flags);
+hwaddr uc32_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
+
+#endif
diff --git a/src/target-unicore32/cpu.c b/src/target-unicore32/cpu.c
new file mode 100644
index 0000000..e5252eb
--- /dev/null
+++ b/src/target-unicore32/cpu.c
@@ -0,0 +1,199 @@
+/*
+ * QEMU UniCore32 CPU
+ *
+ * Copyright (c) 2010-2012 Guan Xuetao
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Contributions from 2012-04-01 on are considered under GPL version 2,
+ * or (at your option) any later version.
+ */
+
+#include "cpu.h"
+#include "qemu-common.h"
+#include "migration/vmstate.h"
+
+static void uc32_cpu_set_pc(CPUState *cs, vaddr value)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(cs);
+
+    cpu->env.regs[31] = value;
+}
+
+static bool uc32_cpu_has_work(CPUState *cs)
+{
+    return cs->interrupt_request &
+        (CPU_INTERRUPT_HARD | CPU_INTERRUPT_EXITTB);
+}
+
+static inline void set_feature(CPUUniCore32State *env, int feature)
+{
+    env->features |= feature;
+}
+
+/* CPU models */
+
+static ObjectClass *uc32_cpu_class_by_name(const char *cpu_model)
+{
+    ObjectClass *oc;
+    char *typename;
+
+    if (cpu_model == NULL) {
+        return NULL;
+    }
+
+    typename = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, cpu_model);
+    oc = object_class_by_name(typename);
+    g_free(typename);
+    if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_UNICORE32_CPU) ||
+                       object_class_is_abstract(oc))) {
+        oc = NULL;
+    }
+    return oc;
+}
+
+typedef struct UniCore32CPUInfo {
+    const char *name;
+    void (*instance_init)(Object *obj);
+} UniCore32CPUInfo;
+
+static void unicore_ii_cpu_initfn(Object *obj)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(obj);
+    CPUUniCore32State *env = &cpu->env;
+
+    env->cp0.c0_cpuid = 0x4d000863;
+    env->cp0.c0_cachetype = 0x0d152152;
+    env->cp0.c1_sys = 0x2000;
+    env->cp0.c2_base = 0x0;
+    env->cp0.c3_faultstatus = 0x0;
+    env->cp0.c4_faultaddr = 0x0;
+    env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
+
+    set_feature(env, UC32_HWCAP_CMOV);
+    set_feature(env, UC32_HWCAP_UCF64);
+}
+
+static void uc32_any_cpu_initfn(Object *obj)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(obj);
+    CPUUniCore32State *env = &cpu->env;
+
+    env->cp0.c0_cpuid = 0xffffffff;
+    env->ucf64.xregs[UC32_UCF64_FPSCR] = 0;
+
+    set_feature(env, UC32_HWCAP_CMOV);
+    set_feature(env, UC32_HWCAP_UCF64);
+}
+
+static const UniCore32CPUInfo uc32_cpus[] = {
+    { .name = "UniCore-II", .instance_init = unicore_ii_cpu_initfn },
+    { .name = "any",        .instance_init = uc32_any_cpu_initfn },
+};
+
+static void uc32_cpu_realizefn(DeviceState *dev, Error **errp)
+{
+    UniCore32CPUClass *ucc = UNICORE32_CPU_GET_CLASS(dev);
+
+    qemu_init_vcpu(CPU(dev));
+
+    ucc->parent_realize(dev, errp);
+}
+
+static void uc32_cpu_initfn(Object *obj)
+{
+    CPUState *cs = CPU(obj);
+    UniCore32CPU *cpu = UNICORE32_CPU(obj);
+    CPUUniCore32State *env = &cpu->env;
+    static bool inited;
+
+    cs->env_ptr = env;
+    cpu_exec_init(cs, &error_abort);
+
+#ifdef CONFIG_USER_ONLY
+    env->uncached_asr = ASR_MODE_USER;
+    env->regs[31] = 0;
+#else
+    env->uncached_asr = ASR_MODE_PRIV;
+    env->regs[31] = 0x03000000;
+#endif
+
+    tlb_flush(cs, 1);
+
+    if (tcg_enabled() && !inited) {
+        inited = true;
+        uc32_translate_init();
+    }
+}
+
+static const VMStateDescription vmstate_uc32_cpu = {
+    .name = "cpu",
+    .unmigratable = 1,
+};
+
+static void uc32_cpu_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+    CPUClass *cc = CPU_CLASS(oc);
+    UniCore32CPUClass *ucc = UNICORE32_CPU_CLASS(oc);
+
+    ucc->parent_realize = dc->realize;
+    dc->realize = uc32_cpu_realizefn;
+
+    cc->class_by_name = uc32_cpu_class_by_name;
+    cc->has_work = uc32_cpu_has_work;
+    cc->do_interrupt = uc32_cpu_do_interrupt;
+    cc->cpu_exec_interrupt = uc32_cpu_exec_interrupt;
+    cc->dump_state = uc32_cpu_dump_state;
+    cc->set_pc = uc32_cpu_set_pc;
+#ifdef CONFIG_USER_ONLY
+    cc->handle_mmu_fault = uc32_cpu_handle_mmu_fault;
+#else
+    cc->get_phys_page_debug = uc32_cpu_get_phys_page_debug;
+#endif
+    dc->vmsd = &vmstate_uc32_cpu;
+
+    /*
+     * Reason: uc32_cpu_initfn() calls cpu_exec_init(), which saves
+     * the object in cpus -> dangling pointer after final
+     * object_unref().
+     */
+    dc->cannot_destroy_with_object_finalize_yet = true;
+}
+
+static void uc32_register_cpu_type(const UniCore32CPUInfo *info)
+{
+    TypeInfo type_info = {
+        .parent = TYPE_UNICORE32_CPU,
+        .instance_init = info->instance_init,
+    };
+
+    type_info.name = g_strdup_printf("%s-" TYPE_UNICORE32_CPU, info->name);
+    type_register(&type_info);
+    g_free((void *)type_info.name);
+}
+
+static const TypeInfo uc32_cpu_type_info = {
+    .name = TYPE_UNICORE32_CPU,
+    .parent = TYPE_CPU,
+    .instance_size = sizeof(UniCore32CPU),
+    .instance_init = uc32_cpu_initfn,
+    .abstract = true,
+    .class_size = sizeof(UniCore32CPUClass),
+    .class_init = uc32_cpu_class_init,
+};
+
+static void uc32_cpu_register_types(void)
+{
+    int i;
+
+    type_register_static(&uc32_cpu_type_info);
+    for (i = 0; i < ARRAY_SIZE(uc32_cpus); i++) {
+        uc32_register_cpu_type(&uc32_cpus[i]);
+    }
+}
+
+type_init(uc32_cpu_register_types)
diff --git a/src/target-unicore32/cpu.h b/src/target-unicore32/cpu.h
new file mode 100644
index 0000000..01c370c
--- /dev/null
+++ b/src/target-unicore32/cpu.h
@@ -0,0 +1,163 @@
+/*
+ * UniCore32 virtual CPU header
+ *
+ * Copyright (C) 2010-2012 Guan Xuetao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
+ */
+#ifndef QEMU_UNICORE32_CPU_H
+#define QEMU_UNICORE32_CPU_H
+
+#define TARGET_LONG_BITS                32
+#define TARGET_PAGE_BITS                12
+
+#define TARGET_PHYS_ADDR_SPACE_BITS     32
+#define TARGET_VIRT_ADDR_SPACE_BITS     32
+
+#define CPUArchState                struct CPUUniCore32State
+
+#include "config.h"
+#include "qemu-common.h"
+#include "exec/cpu-defs.h"
+#include "fpu/softfloat.h"
+
+#define NB_MMU_MODES            2
+
+typedef struct CPUUniCore32State {
+    /* Regs for current mode.  */
+    uint32_t regs[32];
+    /* Frequently accessed ASR bits are stored separately for efficiently.
+       This contains all the other bits.  Use asr_{read,write} to access
+       the whole ASR.  */
+    uint32_t uncached_asr;
+    uint32_t bsr;
+
+    /* Banked registers.  */
+    uint32_t banked_bsr[6];
+    uint32_t banked_r29[6];
+    uint32_t banked_r30[6];
+
+    /* asr flag cache for faster execution */
+    uint32_t CF; /* 0 or 1 */
+    uint32_t VF; /* V is the bit 31. All other bits are undefined */
+    uint32_t NF; /* N is bit 31. All other bits are undefined.  */
+    uint32_t ZF; /* Z set if zero.  */
+
+    /* System control coprocessor (cp0) */
+    struct {
+        uint32_t c0_cpuid;
+        uint32_t c0_cachetype;
+        uint32_t c1_sys; /* System control register.  */
+        uint32_t c2_base; /* MMU translation table base.  */
+        uint32_t c3_faultstatus; /* Fault status registers.  */
+        uint32_t c4_faultaddr; /* Fault address registers.  */
+        uint32_t c5_cacheop; /* Cache operation registers.  */
+        uint32_t c6_tlbop; /* TLB operation registers. */
+    } cp0;
+
+    /* UniCore-F64 coprocessor state.  */
+    struct {
+        float64 regs[16];
+        uint32_t xregs[32];
+        float_status fp_status;
+    } ucf64;
+
+    CPU_COMMON
+
+    /* Internal CPU feature flags.  */
+    uint32_t features;
+
+} CPUUniCore32State;
+
+#define ASR_M                   (0x1f)
+#define ASR_MODE_USER           (0x10)
+#define ASR_MODE_INTR           (0x12)
+#define ASR_MODE_PRIV           (0x13)
+#define ASR_MODE_TRAP           (0x17)
+#define ASR_MODE_EXTN           (0x1b)
+#define ASR_MODE_SUSR           (0x1f)
+#define ASR_I                   (1 << 7)
+#define ASR_V                   (1 << 28)
+#define ASR_C                   (1 << 29)
+#define ASR_Z                   (1 << 30)
+#define ASR_N                   (1 << 31)
+#define ASR_NZCV                (ASR_N | ASR_Z | ASR_C | ASR_V)
+#define ASR_RESERVED            (~(ASR_M | ASR_I | ASR_NZCV))
+
+#define UC32_EXCP_PRIV          (1)
+#define UC32_EXCP_ITRAP         (2)
+#define UC32_EXCP_DTRAP         (3)
+#define UC32_EXCP_INTR          (4)
+
+/* Return the current ASR value.  */
+target_ulong cpu_asr_read(CPUUniCore32State *env1);
+/* Set the ASR.  Note that some bits of mask must be all-set or all-clear.  */
+void cpu_asr_write(CPUUniCore32State *env1, target_ulong val, target_ulong mask);
+
+/* UniCore-F64 system registers.  */
+#define UC32_UCF64_FPSCR                (31)
+#define UCF64_FPSCR_MASK                (0x27ffffff)
+#define UCF64_FPSCR_RND_MASK            (0x7)
+#define UCF64_FPSCR_RND(r)              (((r) >>  0) & UCF64_FPSCR_RND_MASK)
+#define UCF64_FPSCR_TRAPEN_MASK         (0x7f)
+#define UCF64_FPSCR_TRAPEN(r)           (((r) >> 10) & UCF64_FPSCR_TRAPEN_MASK)
+#define UCF64_FPSCR_FLAG_MASK           (0x3ff)
+#define UCF64_FPSCR_FLAG(r)             (((r) >> 17) & UCF64_FPSCR_FLAG_MASK)
+#define UCF64_FPSCR_FLAG_ZERO           (1 << 17)
+#define UCF64_FPSCR_FLAG_INFINITY       (1 << 18)
+#define UCF64_FPSCR_FLAG_INVALID        (1 << 19)
+#define UCF64_FPSCR_FLAG_UNDERFLOW      (1 << 20)
+#define UCF64_FPSCR_FLAG_OVERFLOW       (1 << 21)
+#define UCF64_FPSCR_FLAG_INEXACT        (1 << 22)
+#define UCF64_FPSCR_FLAG_HUGEINT        (1 << 23)
+#define UCF64_FPSCR_FLAG_DENORMAL       (1 << 24)
+#define UCF64_FPSCR_FLAG_UNIMP          (1 << 25)
+#define UCF64_FPSCR_FLAG_DIVZERO        (1 << 26)
+
+#define UC32_HWCAP_CMOV                 4 /* 1 << 2 */
+#define UC32_HWCAP_UCF64                8 /* 1 << 3 */
+
+#define cpu_exec                        uc32_cpu_exec
+#define cpu_signal_handler              uc32_cpu_signal_handler
+
+int uc32_cpu_signal_handler(int host_signum, void *pinfo, void *puc);
+
+/* MMU modes definitions */
+#define MMU_MODE0_SUFFIX _kernel
+#define MMU_MODE1_SUFFIX _user
+#define MMU_USER_IDX 1
+static inline int cpu_mmu_index(CPUUniCore32State *env, bool ifetch)
+{
+    return (env->uncached_asr & ASR_M) == ASR_MODE_USER ? 1 : 0;
+}
+
+#include "exec/cpu-all.h"
+#include "cpu-qom.h"
+#include "exec/exec-all.h"
+
+int uc32_cpu_exec(CPUState *s);
+
+UniCore32CPU *uc32_cpu_init(const char *cpu_model);
+
+#define cpu_init(cpu_model) CPU(uc32_cpu_init(cpu_model))
+
+static inline void cpu_get_tb_cpu_state(CPUUniCore32State *env, target_ulong *pc,
+                                        target_ulong *cs_base, int *flags)
+{
+    *pc = env->regs[31];
+    *cs_base = 0;
+    *flags = 0;
+    if ((env->uncached_asr & ASR_M) != ASR_MODE_USER) {
+        *flags |= (1 << 6);
+    }
+}
+
+int uc32_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw,
+                              int mmu_idx);
+void uc32_translate_init(void);
+void switch_mode(CPUUniCore32State *, int);
+
+#endif /* QEMU_UNICORE32_CPU_H */
diff --git a/src/target-unicore32/helper.c b/src/target-unicore32/helper.c
new file mode 100644
index 0000000..ae63277
--- /dev/null
+++ b/src/target-unicore32/helper.c
@@ -0,0 +1,261 @@
+/*
+ * Copyright (C) 2010-2012 Guan Xuetao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Contributions from 2012-04-01 on are considered under GPL version 2,
+ * or (at your option) any later version.
+ */
+
+#include "cpu.h"
+#include "exec/gdbstub.h"
+#include "exec/helper-proto.h"
+#include "qemu/host-utils.h"
+#ifndef CONFIG_USER_ONLY
+#include "ui/console.h"
+#endif
+
+#undef DEBUG_UC32
+
+#ifdef DEBUG_UC32
+#define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__)
+#else
+#define DPRINTF(fmt, ...) do {} while (0)
+#endif
+
+UniCore32CPU *uc32_cpu_init(const char *cpu_model)
+{
+    return UNICORE32_CPU(cpu_generic_init(TYPE_UNICORE32_CPU, cpu_model));
+}
+
+uint32_t HELPER(clo)(uint32_t x)
+{
+    return clo32(x);
+}
+
+uint32_t HELPER(clz)(uint32_t x)
+{
+    return clz32(x);
+}
+
+#ifndef CONFIG_USER_ONLY
+void helper_cp0_set(CPUUniCore32State *env, uint32_t val, uint32_t creg,
+        uint32_t cop)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+
+    /*
+     * movc pp.nn, rn, #imm9
+     *      rn: UCOP_REG_D
+     *      nn: UCOP_REG_N
+     *          1: sys control reg.
+     *          2: page table base reg.
+     *          3: data fault status reg.
+     *          4: insn fault status reg.
+     *          5: cache op. reg.
+     *          6: tlb op. reg.
+     *      imm9: split UCOP_IMM10 with bit5 is 0
+     */
+    switch (creg) {
+    case 1:
+        if (cop != 0) {
+            goto unrecognized;
+        }
+        env->cp0.c1_sys = val;
+        break;
+    case 2:
+        if (cop != 0) {
+            goto unrecognized;
+        }
+        env->cp0.c2_base = val;
+        break;
+    case 3:
+        if (cop != 0) {
+            goto unrecognized;
+        }
+        env->cp0.c3_faultstatus = val;
+        break;
+    case 4:
+        if (cop != 0) {
+            goto unrecognized;
+        }
+        env->cp0.c4_faultaddr = val;
+        break;
+    case 5:
+        switch (cop) {
+        case 28:
+            DPRINTF("Invalidate Entire I&D cache\n");
+            return;
+        case 20:
+            DPRINTF("Invalidate Entire Icache\n");
+            return;
+        case 12:
+            DPRINTF("Invalidate Entire Dcache\n");
+            return;
+        case 10:
+            DPRINTF("Clean Entire Dcache\n");
+            return;
+        case 14:
+            DPRINTF("Flush Entire Dcache\n");
+            return;
+        case 13:
+            DPRINTF("Invalidate Dcache line\n");
+            return;
+        case 11:
+            DPRINTF("Clean Dcache line\n");
+            return;
+        case 15:
+            DPRINTF("Flush Dcache line\n");
+            return;
+        }
+        break;
+    case 6:
+        if ((cop <= 6) && (cop >= 2)) {
+            /* invalid all tlb */
+            tlb_flush(CPU(cpu), 1);
+            return;
+        }
+        break;
+    default:
+        goto unrecognized;
+    }
+    return;
+unrecognized:
+    DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
+            creg, cop);
+}
+
+uint32_t helper_cp0_get(CPUUniCore32State *env, uint32_t creg, uint32_t cop)
+{
+    /*
+     * movc rd, pp.nn, #imm9
+     *      rd: UCOP_REG_D
+     *      nn: UCOP_REG_N
+     *          0: cpuid and cachetype
+     *          1: sys control reg.
+     *          2: page table base reg.
+     *          3: data fault status reg.
+     *          4: insn fault status reg.
+     *      imm9: split UCOP_IMM10 with bit5 is 0
+     */
+    switch (creg) {
+    case 0:
+        switch (cop) {
+        case 0:
+            return env->cp0.c0_cpuid;
+        case 1:
+            return env->cp0.c0_cachetype;
+        }
+        break;
+    case 1:
+        if (cop == 0) {
+            return env->cp0.c1_sys;
+        }
+        break;
+    case 2:
+        if (cop == 0) {
+            return env->cp0.c2_base;
+        }
+        break;
+    case 3:
+        if (cop == 0) {
+            return env->cp0.c3_faultstatus;
+        }
+        break;
+    case 4:
+        if (cop == 0) {
+            return env->cp0.c4_faultaddr;
+        }
+        break;
+    }
+    DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
+            creg, cop);
+    return 0;
+}
+
+#ifdef CONFIG_CURSES
+/*
+ * FIXME:
+ *     1. curses windows will be blank when switching back
+ *     2. backspace is not handled yet
+ */
+static void putc_on_screen(unsigned char ch)
+{
+    static WINDOW *localwin;
+    static int init;
+
+    if (!init) {
+        /* Assume 80 * 30 screen to minimize the implementation */
+        localwin = newwin(30, 80, 0, 0);
+        scrollok(localwin, TRUE);
+        init = TRUE;
+    }
+
+    if (isprint(ch)) {
+        wprintw(localwin, "%c", ch);
+    } else {
+        switch (ch) {
+        case '\n':
+            wprintw(localwin, "%c", ch);
+            break;
+        case '\r':
+            /* If '\r' is put before '\n', the curses window will destroy the
+             * last print line. And meanwhile, '\n' implifies '\r' inside. */
+            break;
+        default: /* Not handled, so just print it hex code */
+            wprintw(localwin, "-- 0x%x --", ch);
+        }
+    }
+
+    wrefresh(localwin);
+}
+#else
+#define putc_on_screen(c)               do { } while (0)
+#endif
+
+void helper_cp1_putc(target_ulong x)
+{
+    putc_on_screen((unsigned char)x);   /* Output to screen */
+    DPRINTF("%c", x);                   /* Output to stdout */
+}
+#endif
+
+#ifdef CONFIG_USER_ONLY
+void switch_mode(CPUUniCore32State *env, int mode)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+
+    if (mode != ASR_MODE_USER) {
+        cpu_abort(CPU(cpu), "Tried to switch out of user mode\n");
+    }
+}
+
+void uc32_cpu_do_interrupt(CPUState *cs)
+{
+    cpu_abort(cs, "NO interrupt in user mode\n");
+}
+
+int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
+                              int access_type, int mmu_idx)
+{
+    cpu_abort(cs, "NO mmu fault in user mode\n");
+    return 1;
+}
+#endif
+
+bool uc32_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
+{
+    if (interrupt_request & CPU_INTERRUPT_HARD) {
+        UniCore32CPU *cpu = UNICORE32_CPU(cs);
+        CPUUniCore32State *env = &cpu->env;
+
+        if (!(env->uncached_asr & ASR_I)) {
+            cs->exception_index = UC32_EXCP_INTR;
+            uc32_cpu_do_interrupt(cs);
+            return true;
+        }
+    }
+    return false;
+}
diff --git a/src/target-unicore32/helper.h b/src/target-unicore32/helper.h
new file mode 100644
index 0000000..9418137
--- /dev/null
+++ b/src/target-unicore32/helper.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2010-2012 Guan Xuetao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
+ */
+
+#ifndef CONFIG_USER_ONLY
+DEF_HELPER_4(cp0_set, void, env, i32, i32, i32)
+DEF_HELPER_3(cp0_get, i32, env, i32, i32)
+DEF_HELPER_1(cp1_putc, void, i32)
+#endif
+
+DEF_HELPER_1(clz, i32, i32)
+DEF_HELPER_1(clo, i32, i32)
+
+DEF_HELPER_2(exception, void, env, i32)
+
+DEF_HELPER_3(asr_write, void, env, i32, i32)
+DEF_HELPER_1(asr_read, i32, env)
+
+DEF_HELPER_2(get_user_reg, i32, env, i32)
+DEF_HELPER_3(set_user_reg, void, env, i32, i32)
+
+DEF_HELPER_3(add_cc, i32, env, i32, i32)
+DEF_HELPER_3(adc_cc, i32, env, i32, i32)
+DEF_HELPER_3(sub_cc, i32, env, i32, i32)
+DEF_HELPER_3(sbc_cc, i32, env, i32, i32)
+
+DEF_HELPER_2(shl, i32, i32, i32)
+DEF_HELPER_2(shr, i32, i32, i32)
+DEF_HELPER_2(sar, i32, i32, i32)
+DEF_HELPER_3(shl_cc, i32, env, i32, i32)
+DEF_HELPER_3(shr_cc, i32, env, i32, i32)
+DEF_HELPER_3(sar_cc, i32, env, i32, i32)
+DEF_HELPER_3(ror_cc, i32, env, i32, i32)
+
+DEF_HELPER_1(ucf64_get_fpscr, i32, env)
+DEF_HELPER_2(ucf64_set_fpscr, void, env, i32)
+
+DEF_HELPER_3(ucf64_adds, f32, f32, f32, env)
+DEF_HELPER_3(ucf64_addd, f64, f64, f64, env)
+DEF_HELPER_3(ucf64_subs, f32, f32, f32, env)
+DEF_HELPER_3(ucf64_subd, f64, f64, f64, env)
+DEF_HELPER_3(ucf64_muls, f32, f32, f32, env)
+DEF_HELPER_3(ucf64_muld, f64, f64, f64, env)
+DEF_HELPER_3(ucf64_divs, f32, f32, f32, env)
+DEF_HELPER_3(ucf64_divd, f64, f64, f64, env)
+DEF_HELPER_1(ucf64_negs, f32, f32)
+DEF_HELPER_1(ucf64_negd, f64, f64)
+DEF_HELPER_1(ucf64_abss, f32, f32)
+DEF_HELPER_1(ucf64_absd, f64, f64)
+DEF_HELPER_4(ucf64_cmps, void, f32, f32, i32, env)
+DEF_HELPER_4(ucf64_cmpd, void, f64, f64, i32, env)
+
+DEF_HELPER_2(ucf64_sf2df, f64, f32, env)
+DEF_HELPER_2(ucf64_df2sf, f32, f64, env)
+
+DEF_HELPER_2(ucf64_si2sf, f32, f32, env)
+DEF_HELPER_2(ucf64_si2df, f64, f32, env)
+
+DEF_HELPER_2(ucf64_sf2si, f32, f32, env)
+DEF_HELPER_2(ucf64_df2si, f32, f64, env)
diff --git a/src/target-unicore32/op_helper.c b/src/target-unicore32/op_helper.c
new file mode 100644
index 0000000..0266dbd
--- /dev/null
+++ b/src/target-unicore32/op_helper.c
@@ -0,0 +1,259 @@
+/*
+ *  UniCore32 helper routines
+ *
+ * Copyright (C) 2010-2012 Guan Xuetao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
+ */
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "exec/cpu_ldst.h"
+
+#define SIGNBIT (uint32_t)0x80000000
+#define SIGNBIT64 ((uint64_t)1 << 63)
+
+void HELPER(exception)(CPUUniCore32State *env, uint32_t excp)
+{
+    CPUState *cs = CPU(uc32_env_get_cpu(env));
+
+    cs->exception_index = excp;
+    cpu_loop_exit(cs);
+}
+
+static target_ulong asr_read(CPUUniCore32State *env)
+{
+    int ZF;
+    ZF = (env->ZF == 0);
+    return env->uncached_asr | (env->NF & 0x80000000) | (ZF << 30) |
+        (env->CF << 29) | ((env->VF & 0x80000000) >> 3);
+}
+
+target_ulong cpu_asr_read(CPUUniCore32State *env)
+{
+    return asr_read(env);
+}
+
+target_ulong HELPER(asr_read)(CPUUniCore32State *env)
+{
+    return asr_read(env);
+}
+
+static void asr_write(CPUUniCore32State *env, target_ulong val,
+                      target_ulong mask)
+{
+    if (mask & ASR_NZCV) {
+        env->ZF = (~val) & ASR_Z;
+        env->NF = val;
+        env->CF = (val >> 29) & 1;
+        env->VF = (val << 3) & 0x80000000;
+    }
+
+    if ((env->uncached_asr ^ val) & mask & ASR_M) {
+        switch_mode(env, val & ASR_M);
+    }
+    mask &= ~ASR_NZCV;
+    env->uncached_asr = (env->uncached_asr & ~mask) | (val & mask);
+}
+
+void cpu_asr_write(CPUUniCore32State *env, target_ulong val, target_ulong mask)
+{
+    asr_write(env, val, mask);
+}
+
+void HELPER(asr_write)(CPUUniCore32State *env, target_ulong val,
+                       target_ulong mask)
+{
+    asr_write(env, val, mask);
+}
+
+/* Access to user mode registers from privileged modes.  */
+uint32_t HELPER(get_user_reg)(CPUUniCore32State *env, uint32_t regno)
+{
+    uint32_t val;
+
+    if (regno == 29) {
+        val = env->banked_r29[0];
+    } else if (regno == 30) {
+        val = env->banked_r30[0];
+    } else {
+        val = env->regs[regno];
+    }
+    return val;
+}
+
+void HELPER(set_user_reg)(CPUUniCore32State *env, uint32_t regno, uint32_t val)
+{
+    if (regno == 29) {
+        env->banked_r29[0] = val;
+    } else if (regno == 30) {
+        env->banked_r30[0] = val;
+    } else {
+        env->regs[regno] = val;
+    }
+}
+
+/* ??? Flag setting arithmetic is awkward because we need to do comparisons.
+   The only way to do that in TCG is a conditional branch, which clobbers
+   all our temporaries.  For now implement these as helper functions.  */
+
+uint32_t HELPER(add_cc)(CPUUniCore32State *env, uint32_t a, uint32_t b)
+{
+    uint32_t result;
+    result = a + b;
+    env->NF = env->ZF = result;
+    env->CF = result < a;
+    env->VF = (a ^ b ^ -1) & (a ^ result);
+    return result;
+}
+
+uint32_t HELPER(adc_cc)(CPUUniCore32State *env, uint32_t a, uint32_t b)
+{
+    uint32_t result;
+    if (!env->CF) {
+        result = a + b;
+        env->CF = result < a;
+    } else {
+        result = a + b + 1;
+        env->CF = result <= a;
+    }
+    env->VF = (a ^ b ^ -1) & (a ^ result);
+    env->NF = env->ZF = result;
+    return result;
+}
+
+uint32_t HELPER(sub_cc)(CPUUniCore32State *env, uint32_t a, uint32_t b)
+{
+    uint32_t result;
+    result = a - b;
+    env->NF = env->ZF = result;
+    env->CF = a >= b;
+    env->VF = (a ^ b) & (a ^ result);
+    return result;
+}
+
+uint32_t HELPER(sbc_cc)(CPUUniCore32State *env, uint32_t a, uint32_t b)
+{
+    uint32_t result;
+    if (!env->CF) {
+        result = a - b - 1;
+        env->CF = a > b;
+    } else {
+        result = a - b;
+        env->CF = a >= b;
+    }
+    env->VF = (a ^ b) & (a ^ result);
+    env->NF = env->ZF = result;
+    return result;
+}
+
+/* Similarly for variable shift instructions.  */
+
+uint32_t HELPER(shl)(uint32_t x, uint32_t i)
+{
+    int shift = i & 0xff;
+    if (shift >= 32) {
+        return 0;
+    }
+    return x << shift;
+}
+
+uint32_t HELPER(shr)(uint32_t x, uint32_t i)
+{
+    int shift = i & 0xff;
+    if (shift >= 32) {
+        return 0;
+    }
+    return (uint32_t)x >> shift;
+}
+
+uint32_t HELPER(sar)(uint32_t x, uint32_t i)
+{
+    int shift = i & 0xff;
+    if (shift >= 32) {
+        shift = 31;
+    }
+    return (int32_t)x >> shift;
+}
+
+uint32_t HELPER(shl_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i)
+{
+    int shift = i & 0xff;
+    if (shift >= 32) {
+        if (shift == 32) {
+            env->CF = x & 1;
+        } else {
+            env->CF = 0;
+        }
+        return 0;
+    } else if (shift != 0) {
+        env->CF = (x >> (32 - shift)) & 1;
+        return x << shift;
+    }
+    return x;
+}
+
+uint32_t HELPER(shr_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i)
+{
+    int shift = i & 0xff;
+    if (shift >= 32) {
+        if (shift == 32) {
+            env->CF = (x >> 31) & 1;
+        } else {
+            env->CF = 0;
+        }
+        return 0;
+    } else if (shift != 0) {
+        env->CF = (x >> (shift - 1)) & 1;
+        return x >> shift;
+    }
+    return x;
+}
+
+uint32_t HELPER(sar_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i)
+{
+    int shift = i & 0xff;
+    if (shift >= 32) {
+        env->CF = (x >> 31) & 1;
+        return (int32_t)x >> 31;
+    } else if (shift != 0) {
+        env->CF = (x >> (shift - 1)) & 1;
+        return (int32_t)x >> shift;
+    }
+    return x;
+}
+
+uint32_t HELPER(ror_cc)(CPUUniCore32State *env, uint32_t x, uint32_t i)
+{
+    int shift1, shift;
+    shift1 = i & 0xff;
+    shift = shift1 & 0x1f;
+    if (shift == 0) {
+        if (shift1 != 0) {
+            env->CF = (x >> 31) & 1;
+        }
+        return x;
+    } else {
+        env->CF = (x >> (shift - 1)) & 1;
+        return ((uint32_t)x >> shift) | (x << (32 - shift));
+    }
+}
+
+#ifndef CONFIG_USER_ONLY
+void tlb_fill(CPUState *cs, target_ulong addr, int is_write,
+              int mmu_idx, uintptr_t retaddr)
+{
+    int ret;
+
+    ret = uc32_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx);
+    if (unlikely(ret)) {
+        if (retaddr) {
+            /* now we have a real cpu fault */
+            cpu_restore_state(cs, retaddr);
+        }
+        cpu_loop_exit(cs);
+    }
+}
+#endif
diff --git a/src/target-unicore32/softmmu.c b/src/target-unicore32/softmmu.c
new file mode 100644
index 0000000..9a3786d
--- /dev/null
+++ b/src/target-unicore32/softmmu.c
@@ -0,0 +1,276 @@
+/*
+ * Softmmu related functions
+ *
+ * Copyright (C) 2010-2012 Guan Xuetao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation, or any later version.
+ * See the COPYING file in the top-level directory.
+ */
+#ifdef CONFIG_USER_ONLY
+#error This file only exist under softmmu circumstance
+#endif
+
+#include <cpu.h>
+
+#undef DEBUG_UC32
+
+#ifdef DEBUG_UC32
+#define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__)
+#else
+#define DPRINTF(fmt, ...) do {} while (0)
+#endif
+
+#define SUPERPAGE_SIZE             (1 << 22)
+#define UC32_PAGETABLE_READ        (1 << 8)
+#define UC32_PAGETABLE_WRITE       (1 << 7)
+#define UC32_PAGETABLE_EXEC        (1 << 6)
+#define UC32_PAGETABLE_EXIST       (1 << 2)
+#define PAGETABLE_TYPE(x)          ((x) & 3)
+
+
+/* Map CPU modes onto saved register banks.  */
+static inline int bank_number(CPUUniCore32State *env, int mode)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+
+    switch (mode) {
+    case ASR_MODE_USER:
+    case ASR_MODE_SUSR:
+        return 0;
+    case ASR_MODE_PRIV:
+        return 1;
+    case ASR_MODE_TRAP:
+        return 2;
+    case ASR_MODE_EXTN:
+        return 3;
+    case ASR_MODE_INTR:
+        return 4;
+    }
+    cpu_abort(CPU(cpu), "Bad mode %x\n", mode);
+    return -1;
+}
+
+void switch_mode(CPUUniCore32State *env, int mode)
+{
+    int old_mode;
+    int i;
+
+    old_mode = env->uncached_asr & ASR_M;
+    if (mode == old_mode) {
+        return;
+    }
+
+    i = bank_number(env, old_mode);
+    env->banked_r29[i] = env->regs[29];
+    env->banked_r30[i] = env->regs[30];
+    env->banked_bsr[i] = env->bsr;
+
+    i = bank_number(env, mode);
+    env->regs[29] = env->banked_r29[i];
+    env->regs[30] = env->banked_r30[i];
+    env->bsr = env->banked_bsr[i];
+}
+
+/* Handle a CPU exception.  */
+void uc32_cpu_do_interrupt(CPUState *cs)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(cs);
+    CPUUniCore32State *env = &cpu->env;
+    uint32_t addr;
+    int new_mode;
+
+    switch (cs->exception_index) {
+    case UC32_EXCP_PRIV:
+        new_mode = ASR_MODE_PRIV;
+        addr = 0x08;
+        break;
+    case UC32_EXCP_ITRAP:
+        DPRINTF("itrap happened at %x\n", env->regs[31]);
+        new_mode = ASR_MODE_TRAP;
+        addr = 0x0c;
+        break;
+    case UC32_EXCP_DTRAP:
+        DPRINTF("dtrap happened at %x\n", env->regs[31]);
+        new_mode = ASR_MODE_TRAP;
+        addr = 0x10;
+        break;
+    case UC32_EXCP_INTR:
+        new_mode = ASR_MODE_INTR;
+        addr = 0x18;
+        break;
+    default:
+        cpu_abort(cs, "Unhandled exception 0x%x\n", cs->exception_index);
+        return;
+    }
+    /* High vectors.  */
+    if (env->cp0.c1_sys & (1 << 13)) {
+        addr += 0xffff0000;
+    }
+
+    switch_mode(env, new_mode);
+    env->bsr = cpu_asr_read(env);
+    env->uncached_asr = (env->uncached_asr & ~ASR_M) | new_mode;
+    env->uncached_asr |= ASR_I;
+    /* The PC already points to the proper instruction.  */
+    env->regs[30] = env->regs[31];
+    env->regs[31] = addr;
+    cs->interrupt_request |= CPU_INTERRUPT_EXITTB;
+}
+
+static int get_phys_addr_ucv2(CPUUniCore32State *env, uint32_t address,
+        int access_type, int is_user, uint32_t *phys_ptr, int *prot,
+        target_ulong *page_size)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    CPUState *cs = CPU(cpu);
+    int code;
+    uint32_t table;
+    uint32_t desc;
+    uint32_t phys_addr;
+
+    /* Pagetable walk.  */
+    /* Lookup l1 descriptor.  */
+    table = env->cp0.c2_base & 0xfffff000;
+    table |= (address >> 20) & 0xffc;
+    desc = ldl_phys(cs->as, table);
+    code = 0;
+    switch (PAGETABLE_TYPE(desc)) {
+    case 3:
+        /* Superpage  */
+        if (!(desc & UC32_PAGETABLE_EXIST)) {
+            code = 0x0b; /* superpage miss */
+            goto do_fault;
+        }
+        phys_addr = (desc & 0xffc00000) | (address & 0x003fffff);
+        *page_size = SUPERPAGE_SIZE;
+        break;
+    case 0:
+        /* Lookup l2 entry.  */
+        if (is_user) {
+            DPRINTF("PGD address %x, desc %x\n", table, desc);
+        }
+        if (!(desc & UC32_PAGETABLE_EXIST)) {
+            code = 0x05; /* second pagetable miss */
+            goto do_fault;
+        }
+        table = (desc & 0xfffff000) | ((address >> 10) & 0xffc);
+        desc = ldl_phys(cs->as, table);
+        /* 4k page.  */
+        if (is_user) {
+            DPRINTF("PTE address %x, desc %x\n", table, desc);
+        }
+        if (!(desc & UC32_PAGETABLE_EXIST)) {
+            code = 0x08; /* page miss */
+            goto do_fault;
+        }
+        switch (PAGETABLE_TYPE(desc)) {
+        case 0:
+            phys_addr = (desc & 0xfffff000) | (address & 0xfff);
+            *page_size = TARGET_PAGE_SIZE;
+            break;
+        default:
+            cpu_abort(CPU(cpu), "wrong page type!");
+        }
+        break;
+    default:
+        cpu_abort(CPU(cpu), "wrong page type!");
+    }
+
+    *phys_ptr = phys_addr;
+    *prot = 0;
+    /* Check access permissions.  */
+    if (desc & UC32_PAGETABLE_READ) {
+        *prot |= PAGE_READ;
+    } else {
+        if (is_user && (access_type == 0)) {
+            code = 0x11; /* access unreadable area */
+            goto do_fault;
+        }
+    }
+
+    if (desc & UC32_PAGETABLE_WRITE) {
+        *prot |= PAGE_WRITE;
+    } else {
+        if (is_user && (access_type == 1)) {
+            code = 0x12; /* access unwritable area */
+            goto do_fault;
+        }
+    }
+
+    if (desc & UC32_PAGETABLE_EXEC) {
+        *prot |= PAGE_EXEC;
+    } else {
+        if (is_user && (access_type == 2)) {
+            code = 0x13; /* access unexecutable area */
+            goto do_fault;
+        }
+    }
+
+do_fault:
+    return code;
+}
+
+int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
+                              int access_type, int mmu_idx)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(cs);
+    CPUUniCore32State *env = &cpu->env;
+    uint32_t phys_addr;
+    target_ulong page_size;
+    int prot;
+    int ret, is_user;
+
+    ret = 1;
+    is_user = mmu_idx == MMU_USER_IDX;
+
+    if ((env->cp0.c1_sys & 1) == 0) {
+        /* MMU disabled.  */
+        phys_addr = address;
+        prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+        page_size = TARGET_PAGE_SIZE;
+        ret = 0;
+    } else {
+        if ((address & (1 << 31)) || (is_user)) {
+            ret = get_phys_addr_ucv2(env, address, access_type, is_user,
+                                    &phys_addr, &prot, &page_size);
+            if (is_user) {
+                DPRINTF("user space access: ret %x, address %" VADDR_PRIx ", "
+                        "access_type %x, phys_addr %x, prot %x\n",
+                        ret, address, access_type, phys_addr, prot);
+            }
+        } else {
+            /*IO memory */
+            phys_addr = address | (1 << 31);
+            prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+            page_size = TARGET_PAGE_SIZE;
+            ret = 0;
+        }
+    }
+
+    if (ret == 0) {
+        /* Map a single page.  */
+        phys_addr &= TARGET_PAGE_MASK;
+        address &= TARGET_PAGE_MASK;
+        tlb_set_page(cs, address, phys_addr, prot, mmu_idx, page_size);
+        return 0;
+    }
+
+    env->cp0.c3_faultstatus = ret;
+    env->cp0.c4_faultaddr = address;
+    if (access_type == 2) {
+        cs->exception_index = UC32_EXCP_ITRAP;
+    } else {
+        cs->exception_index = UC32_EXCP_DTRAP;
+    }
+    return ret;
+}
+
+hwaddr uc32_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(cs);
+
+    cpu_abort(CPU(cpu), "%s not supported yet\n", __func__);
+    return addr;
+}
diff --git a/src/target-unicore32/translate.c b/src/target-unicore32/translate.c
new file mode 100644
index 0000000..d2f92f0
--- /dev/null
+++ b/src/target-unicore32/translate.c
@@ -0,0 +1,2104 @@
+/*
+ *  UniCore32 translation
+ *
+ * Copyright (C) 2010-2012 Guan Xuetao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation, or (at your option) any
+ * later version. See the COPYING file in the top-level directory.
+ */
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "cpu.h"
+#include "disas/disas.h"
+#include "tcg-op.h"
+#include "qemu/log.h"
+#include "exec/cpu_ldst.h"
+
+#include "exec/helper-proto.h"
+#include "exec/helper-gen.h"
+
+#include "trace-tcg.h"
+
+
+/* internal defines */
+typedef struct DisasContext {
+    target_ulong pc;
+    int is_jmp;
+    /* Nonzero if this instruction has been conditionally skipped.  */
+    int condjmp;
+    /* The label that will be jumped to when the instruction is skipped.  */
+    TCGLabel *condlabel;
+    struct TranslationBlock *tb;
+    int singlestep_enabled;
+#ifndef CONFIG_USER_ONLY
+    int user;
+#endif
+} DisasContext;
+
+#ifndef CONFIG_USER_ONLY
+#define IS_USER(s)      (s->user)
+#else
+#define IS_USER(s)      1
+#endif
+
+/* These instructions trap after executing, so defer them until after the
+   conditional executions state has been updated.  */
+#define DISAS_SYSCALL 5
+
+static TCGv_ptr cpu_env;
+static TCGv_i32 cpu_R[32];
+
+/* FIXME:  These should be removed.  */
+static TCGv cpu_F0s, cpu_F1s;
+static TCGv_i64 cpu_F0d, cpu_F1d;
+
+#include "exec/gen-icount.h"
+
+static const char *regnames[] = {
+      "r00", "r01", "r02", "r03", "r04", "r05", "r06", "r07",
+      "r08", "r09", "r10", "r11", "r12", "r13", "r14", "r15",
+      "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+      "r24", "r25", "r26", "r27", "r28", "r29", "r30", "pc" };
+
+/* initialize TCG globals.  */
+void uc32_translate_init(void)
+{
+    int i;
+
+    cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
+
+    for (i = 0; i < 32; i++) {
+        cpu_R[i] = tcg_global_mem_new_i32(TCG_AREG0,
+                                offsetof(CPUUniCore32State, regs[i]), regnames[i]);
+    }
+}
+
+static int num_temps;
+
+/* Allocate a temporary variable.  */
+static TCGv_i32 new_tmp(void)
+{
+    num_temps++;
+    return tcg_temp_new_i32();
+}
+
+/* Release a temporary variable.  */
+static void dead_tmp(TCGv tmp)
+{
+    tcg_temp_free(tmp);
+    num_temps--;
+}
+
+static inline TCGv load_cpu_offset(int offset)
+{
+    TCGv tmp = new_tmp();
+    tcg_gen_ld_i32(tmp, cpu_env, offset);
+    return tmp;
+}
+
+#define load_cpu_field(name) load_cpu_offset(offsetof(CPUUniCore32State, name))
+
+static inline void store_cpu_offset(TCGv var, int offset)
+{
+    tcg_gen_st_i32(var, cpu_env, offset);
+    dead_tmp(var);
+}
+
+#define store_cpu_field(var, name) \
+    store_cpu_offset(var, offsetof(CPUUniCore32State, name))
+
+/* Set a variable to the value of a CPU register.  */
+static void load_reg_var(DisasContext *s, TCGv var, int reg)
+{
+    if (reg == 31) {
+        uint32_t addr;
+        /* normaly, since we updated PC */
+        addr = (long)s->pc;
+        tcg_gen_movi_i32(var, addr);
+    } else {
+        tcg_gen_mov_i32(var, cpu_R[reg]);
+    }
+}
+
+/* Create a new temporary and set it to the value of a CPU register.  */
+static inline TCGv load_reg(DisasContext *s, int reg)
+{
+    TCGv tmp = new_tmp();
+    load_reg_var(s, tmp, reg);
+    return tmp;
+}
+
+/* Set a CPU register.  The source must be a temporary and will be
+   marked as dead.  */
+static void store_reg(DisasContext *s, int reg, TCGv var)
+{
+    if (reg == 31) {
+        tcg_gen_andi_i32(var, var, ~3);
+        s->is_jmp = DISAS_JUMP;
+    }
+    tcg_gen_mov_i32(cpu_R[reg], var);
+    dead_tmp(var);
+}
+
+/* Value extensions.  */
+#define gen_uxtb(var)           tcg_gen_ext8u_i32(var, var)
+#define gen_uxth(var)           tcg_gen_ext16u_i32(var, var)
+#define gen_sxtb(var)           tcg_gen_ext8s_i32(var, var)
+#define gen_sxth(var)           tcg_gen_ext16s_i32(var, var)
+
+#define UCOP_REG_M              (((insn) >>  0) & 0x1f)
+#define UCOP_REG_N              (((insn) >> 19) & 0x1f)
+#define UCOP_REG_D              (((insn) >> 14) & 0x1f)
+#define UCOP_REG_S              (((insn) >>  9) & 0x1f)
+#define UCOP_REG_LO             (((insn) >> 14) & 0x1f)
+#define UCOP_REG_HI             (((insn) >>  9) & 0x1f)
+#define UCOP_SH_OP              (((insn) >>  6) & 0x03)
+#define UCOP_SH_IM              (((insn) >>  9) & 0x1f)
+#define UCOP_OPCODES            (((insn) >> 25) & 0x0f)
+#define UCOP_IMM_9              (((insn) >>  0) & 0x1ff)
+#define UCOP_IMM10              (((insn) >>  0) & 0x3ff)
+#define UCOP_IMM14              (((insn) >>  0) & 0x3fff)
+#define UCOP_COND               (((insn) >> 25) & 0x0f)
+#define UCOP_CMOV_COND          (((insn) >> 19) & 0x0f)
+#define UCOP_CPNUM              (((insn) >> 10) & 0x0f)
+#define UCOP_UCF64_FMT          (((insn) >> 24) & 0x03)
+#define UCOP_UCF64_FUNC         (((insn) >>  6) & 0x0f)
+#define UCOP_UCF64_COND         (((insn) >>  6) & 0x0f)
+
+#define UCOP_SET(i)             ((insn) & (1 << (i)))
+#define UCOP_SET_P              UCOP_SET(28)
+#define UCOP_SET_U              UCOP_SET(27)
+#define UCOP_SET_B              UCOP_SET(26)
+#define UCOP_SET_W              UCOP_SET(25)
+#define UCOP_SET_L              UCOP_SET(24)
+#define UCOP_SET_S              UCOP_SET(24)
+
+#define ILLEGAL         cpu_abort(CPU(cpu),                             \
+                        "Illegal UniCore32 instruction %x at line %d!", \
+                        insn, __LINE__)
+
+#ifndef CONFIG_USER_ONLY
+static void disas_cp0_insn(CPUUniCore32State *env, DisasContext *s,
+        uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    TCGv tmp, tmp2, tmp3;
+    if ((insn & 0xfe000000) == 0xe0000000) {
+        tmp2 = new_tmp();
+        tmp3 = new_tmp();
+        tcg_gen_movi_i32(tmp2, UCOP_REG_N);
+        tcg_gen_movi_i32(tmp3, UCOP_IMM10);
+        if (UCOP_SET_L) {
+            tmp = new_tmp();
+            gen_helper_cp0_get(tmp, cpu_env, tmp2, tmp3);
+            store_reg(s, UCOP_REG_D, tmp);
+        } else {
+            tmp = load_reg(s, UCOP_REG_D);
+            gen_helper_cp0_set(cpu_env, tmp, tmp2, tmp3);
+            dead_tmp(tmp);
+        }
+        dead_tmp(tmp2);
+        dead_tmp(tmp3);
+        return;
+    }
+    ILLEGAL;
+}
+
+static void disas_ocd_insn(CPUUniCore32State *env, DisasContext *s,
+        uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    TCGv tmp;
+
+    if ((insn & 0xff003fff) == 0xe1000400) {
+        /*
+         * movc rd, pp.nn, #imm9
+         *      rd: UCOP_REG_D
+         *      nn: UCOP_REG_N (must be 0)
+         *      imm9: 0
+         */
+        if (UCOP_REG_N == 0) {
+            tmp = new_tmp();
+            tcg_gen_movi_i32(tmp, 0);
+            store_reg(s, UCOP_REG_D, tmp);
+            return;
+        } else {
+            ILLEGAL;
+        }
+    }
+    if ((insn & 0xff003fff) == 0xe0000401) {
+        /*
+         * movc pp.nn, rn, #imm9
+         *      rn: UCOP_REG_D
+         *      nn: UCOP_REG_N (must be 1)
+         *      imm9: 1
+         */
+        if (UCOP_REG_N == 1) {
+            tmp = load_reg(s, UCOP_REG_D);
+            gen_helper_cp1_putc(tmp);
+            dead_tmp(tmp);
+            return;
+        } else {
+            ILLEGAL;
+        }
+    }
+    ILLEGAL;
+}
+#endif
+
+static inline void gen_set_asr(TCGv var, uint32_t mask)
+{
+    TCGv tmp_mask = tcg_const_i32(mask);
+    gen_helper_asr_write(cpu_env, var, tmp_mask);
+    tcg_temp_free_i32(tmp_mask);
+}
+/* Set NZCV flags from the high 4 bits of var.  */
+#define gen_set_nzcv(var) gen_set_asr(var, ASR_NZCV)
+
+static void gen_exception(int excp)
+{
+    TCGv tmp = new_tmp();
+    tcg_gen_movi_i32(tmp, excp);
+    gen_helper_exception(cpu_env, tmp);
+    dead_tmp(tmp);
+}
+
+#define gen_set_CF(var) tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, CF))
+
+/* Set CF to the top bit of var.  */
+static void gen_set_CF_bit31(TCGv var)
+{
+    TCGv tmp = new_tmp();
+    tcg_gen_shri_i32(tmp, var, 31);
+    gen_set_CF(tmp);
+    dead_tmp(tmp);
+}
+
+/* Set N and Z flags from var.  */
+static inline void gen_logic_CC(TCGv var)
+{
+    tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, NF));
+    tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, ZF));
+}
+
+/* dest = T0 + T1 + CF. */
+static void gen_add_carry(TCGv dest, TCGv t0, TCGv t1)
+{
+    TCGv tmp;
+    tcg_gen_add_i32(dest, t0, t1);
+    tmp = load_cpu_field(CF);
+    tcg_gen_add_i32(dest, dest, tmp);
+    dead_tmp(tmp);
+}
+
+/* dest = T0 - T1 + CF - 1.  */
+static void gen_sub_carry(TCGv dest, TCGv t0, TCGv t1)
+{
+    TCGv tmp;
+    tcg_gen_sub_i32(dest, t0, t1);
+    tmp = load_cpu_field(CF);
+    tcg_gen_add_i32(dest, dest, tmp);
+    tcg_gen_subi_i32(dest, dest, 1);
+    dead_tmp(tmp);
+}
+
+static void shifter_out_im(TCGv var, int shift)
+{
+    TCGv tmp = new_tmp();
+    if (shift == 0) {
+        tcg_gen_andi_i32(tmp, var, 1);
+    } else {
+        tcg_gen_shri_i32(tmp, var, shift);
+        if (shift != 31) {
+            tcg_gen_andi_i32(tmp, tmp, 1);
+        }
+    }
+    gen_set_CF(tmp);
+    dead_tmp(tmp);
+}
+
+/* Shift by immediate.  Includes special handling for shift == 0.  */
+static inline void gen_uc32_shift_im(TCGv var, int shiftop, int shift,
+        int flags)
+{
+    switch (shiftop) {
+    case 0: /* LSL */
+        if (shift != 0) {
+            if (flags) {
+                shifter_out_im(var, 32 - shift);
+            }
+            tcg_gen_shli_i32(var, var, shift);
+        }
+        break;
+    case 1: /* LSR */
+        if (shift == 0) {
+            if (flags) {
+                tcg_gen_shri_i32(var, var, 31);
+                gen_set_CF(var);
+            }
+            tcg_gen_movi_i32(var, 0);
+        } else {
+            if (flags) {
+                shifter_out_im(var, shift - 1);
+            }
+            tcg_gen_shri_i32(var, var, shift);
+        }
+        break;
+    case 2: /* ASR */
+        if (shift == 0) {
+            shift = 32;
+        }
+        if (flags) {
+            shifter_out_im(var, shift - 1);
+        }
+        if (shift == 32) {
+            shift = 31;
+        }
+        tcg_gen_sari_i32(var, var, shift);
+        break;
+    case 3: /* ROR/RRX */
+        if (shift != 0) {
+            if (flags) {
+                shifter_out_im(var, shift - 1);
+            }
+            tcg_gen_rotri_i32(var, var, shift); break;
+        } else {
+            TCGv tmp = load_cpu_field(CF);
+            if (flags) {
+                shifter_out_im(var, 0);
+            }
+            tcg_gen_shri_i32(var, var, 1);
+            tcg_gen_shli_i32(tmp, tmp, 31);
+            tcg_gen_or_i32(var, var, tmp);
+            dead_tmp(tmp);
+        }
+    }
+};
+
+static inline void gen_uc32_shift_reg(TCGv var, int shiftop,
+                                     TCGv shift, int flags)
+{
+    if (flags) {
+        switch (shiftop) {
+        case 0:
+            gen_helper_shl_cc(var, cpu_env, var, shift);
+            break;
+        case 1:
+            gen_helper_shr_cc(var, cpu_env, var, shift);
+            break;
+        case 2:
+            gen_helper_sar_cc(var, cpu_env, var, shift);
+            break;
+        case 3:
+            gen_helper_ror_cc(var, cpu_env, var, shift);
+            break;
+        }
+    } else {
+        switch (shiftop) {
+        case 0:
+            gen_helper_shl(var, var, shift);
+            break;
+        case 1:
+            gen_helper_shr(var, var, shift);
+            break;
+        case 2:
+            gen_helper_sar(var, var, shift);
+            break;
+        case 3:
+            tcg_gen_andi_i32(shift, shift, 0x1f);
+            tcg_gen_rotr_i32(var, var, shift);
+            break;
+        }
+    }
+    dead_tmp(shift);
+}
+
+static void gen_test_cc(int cc, TCGLabel *label)
+{
+    TCGv tmp;
+    TCGv tmp2;
+    TCGLabel *inv;
+
+    switch (cc) {
+    case 0: /* eq: Z */
+        tmp = load_cpu_field(ZF);
+        tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
+        break;
+    case 1: /* ne: !Z */
+        tmp = load_cpu_field(ZF);
+        tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
+        break;
+    case 2: /* cs: C */
+        tmp = load_cpu_field(CF);
+        tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
+        break;
+    case 3: /* cc: !C */
+        tmp = load_cpu_field(CF);
+        tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
+        break;
+    case 4: /* mi: N */
+        tmp = load_cpu_field(NF);
+        tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
+        break;
+    case 5: /* pl: !N */
+        tmp = load_cpu_field(NF);
+        tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
+        break;
+    case 6: /* vs: V */
+        tmp = load_cpu_field(VF);
+        tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
+        break;
+    case 7: /* vc: !V */
+        tmp = load_cpu_field(VF);
+        tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
+        break;
+    case 8: /* hi: C && !Z */
+        inv = gen_new_label();
+        tmp = load_cpu_field(CF);
+        tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, inv);
+        dead_tmp(tmp);
+        tmp = load_cpu_field(ZF);
+        tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
+        gen_set_label(inv);
+        break;
+    case 9: /* ls: !C || Z */
+        tmp = load_cpu_field(CF);
+        tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
+        dead_tmp(tmp);
+        tmp = load_cpu_field(ZF);
+        tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
+        break;
+    case 10: /* ge: N == V -> N ^ V == 0 */
+        tmp = load_cpu_field(VF);
+        tmp2 = load_cpu_field(NF);
+        tcg_gen_xor_i32(tmp, tmp, tmp2);
+        dead_tmp(tmp2);
+        tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
+        break;
+    case 11: /* lt: N != V -> N ^ V != 0 */
+        tmp = load_cpu_field(VF);
+        tmp2 = load_cpu_field(NF);
+        tcg_gen_xor_i32(tmp, tmp, tmp2);
+        dead_tmp(tmp2);
+        tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
+        break;
+    case 12: /* gt: !Z && N == V */
+        inv = gen_new_label();
+        tmp = load_cpu_field(ZF);
+        tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, inv);
+        dead_tmp(tmp);
+        tmp = load_cpu_field(VF);
+        tmp2 = load_cpu_field(NF);
+        tcg_gen_xor_i32(tmp, tmp, tmp2);
+        dead_tmp(tmp2);
+        tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
+        gen_set_label(inv);
+        break;
+    case 13: /* le: Z || N != V */
+        tmp = load_cpu_field(ZF);
+        tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
+        dead_tmp(tmp);
+        tmp = load_cpu_field(VF);
+        tmp2 = load_cpu_field(NF);
+        tcg_gen_xor_i32(tmp, tmp, tmp2);
+        dead_tmp(tmp2);
+        tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
+        break;
+    default:
+        fprintf(stderr, "Bad condition code 0x%x\n", cc);
+        abort();
+    }
+    dead_tmp(tmp);
+}
+
+static const uint8_t table_logic_cc[16] = {
+    1, /* and */    1, /* xor */    0, /* sub */    0, /* rsb */
+    0, /* add */    0, /* adc */    0, /* sbc */    0, /* rsc */
+    1, /* andl */   1, /* xorl */   0, /* cmp */    0, /* cmn */
+    1, /* orr */    1, /* mov */    1, /* bic */    1, /* mvn */
+};
+
+/* Set PC state from an immediate address.  */
+static inline void gen_bx_im(DisasContext *s, uint32_t addr)
+{
+    s->is_jmp = DISAS_UPDATE;
+    tcg_gen_movi_i32(cpu_R[31], addr & ~3);
+}
+
+/* Set PC state from var.  var is marked as dead.  */
+static inline void gen_bx(DisasContext *s, TCGv var)
+{
+    s->is_jmp = DISAS_UPDATE;
+    tcg_gen_andi_i32(cpu_R[31], var, ~3);
+    dead_tmp(var);
+}
+
+static inline void store_reg_bx(DisasContext *s, int reg, TCGv var)
+{
+    store_reg(s, reg, var);
+}
+
+static inline TCGv gen_ld8s(TCGv addr, int index)
+{
+    TCGv tmp = new_tmp();
+    tcg_gen_qemu_ld8s(tmp, addr, index);
+    return tmp;
+}
+
+static inline TCGv gen_ld8u(TCGv addr, int index)
+{
+    TCGv tmp = new_tmp();
+    tcg_gen_qemu_ld8u(tmp, addr, index);
+    return tmp;
+}
+
+static inline TCGv gen_ld16s(TCGv addr, int index)
+{
+    TCGv tmp = new_tmp();
+    tcg_gen_qemu_ld16s(tmp, addr, index);
+    return tmp;
+}
+
+static inline TCGv gen_ld16u(TCGv addr, int index)
+{
+    TCGv tmp = new_tmp();
+    tcg_gen_qemu_ld16u(tmp, addr, index);
+    return tmp;
+}
+
+static inline TCGv gen_ld32(TCGv addr, int index)
+{
+    TCGv tmp = new_tmp();
+    tcg_gen_qemu_ld32u(tmp, addr, index);
+    return tmp;
+}
+
+static inline void gen_st8(TCGv val, TCGv addr, int index)
+{
+    tcg_gen_qemu_st8(val, addr, index);
+    dead_tmp(val);
+}
+
+static inline void gen_st16(TCGv val, TCGv addr, int index)
+{
+    tcg_gen_qemu_st16(val, addr, index);
+    dead_tmp(val);
+}
+
+static inline void gen_st32(TCGv val, TCGv addr, int index)
+{
+    tcg_gen_qemu_st32(val, addr, index);
+    dead_tmp(val);
+}
+
+static inline void gen_set_pc_im(uint32_t val)
+{
+    tcg_gen_movi_i32(cpu_R[31], val);
+}
+
+/* Force a TB lookup after an instruction that changes the CPU state.  */
+static inline void gen_lookup_tb(DisasContext *s)
+{
+    tcg_gen_movi_i32(cpu_R[31], s->pc & ~1);
+    s->is_jmp = DISAS_UPDATE;
+}
+
+static inline void gen_add_data_offset(DisasContext *s, unsigned int insn,
+        TCGv var)
+{
+    int val;
+    TCGv offset;
+
+    if (UCOP_SET(29)) {
+        /* immediate */
+        val = UCOP_IMM14;
+        if (!UCOP_SET_U) {
+            val = -val;
+        }
+        if (val != 0) {
+            tcg_gen_addi_i32(var, var, val);
+        }
+    } else {
+        /* shift/register */
+        offset = load_reg(s, UCOP_REG_M);
+        gen_uc32_shift_im(offset, UCOP_SH_OP, UCOP_SH_IM, 0);
+        if (!UCOP_SET_U) {
+            tcg_gen_sub_i32(var, var, offset);
+        } else {
+            tcg_gen_add_i32(var, var, offset);
+        }
+        dead_tmp(offset);
+    }
+}
+
+static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn,
+        TCGv var)
+{
+    int val;
+    TCGv offset;
+
+    if (UCOP_SET(26)) {
+        /* immediate */
+        val = (insn & 0x1f) | ((insn >> 4) & 0x3e0);
+        if (!UCOP_SET_U) {
+            val = -val;
+        }
+        if (val != 0) {
+            tcg_gen_addi_i32(var, var, val);
+        }
+    } else {
+        /* register */
+        offset = load_reg(s, UCOP_REG_M);
+        if (!UCOP_SET_U) {
+            tcg_gen_sub_i32(var, var, offset);
+        } else {
+            tcg_gen_add_i32(var, var, offset);
+        }
+        dead_tmp(offset);
+    }
+}
+
+static inline long ucf64_reg_offset(int reg)
+{
+    if (reg & 1) {
+        return offsetof(CPUUniCore32State, ucf64.regs[reg >> 1])
+          + offsetof(CPU_DoubleU, l.upper);
+    } else {
+        return offsetof(CPUUniCore32State, ucf64.regs[reg >> 1])
+          + offsetof(CPU_DoubleU, l.lower);
+    }
+}
+
+#define ucf64_gen_ld32(reg)      load_cpu_offset(ucf64_reg_offset(reg))
+#define ucf64_gen_st32(var, reg) store_cpu_offset(var, ucf64_reg_offset(reg))
+
+/* UniCore-F64 single load/store I_offset */
+static void do_ucf64_ldst_i(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    int offset;
+    TCGv tmp;
+    TCGv addr;
+
+    addr = load_reg(s, UCOP_REG_N);
+    if (!UCOP_SET_P && !UCOP_SET_W) {
+        ILLEGAL;
+    }
+
+    if (UCOP_SET_P) {
+        offset = UCOP_IMM10 << 2;
+        if (!UCOP_SET_U) {
+            offset = -offset;
+        }
+        if (offset != 0) {
+            tcg_gen_addi_i32(addr, addr, offset);
+        }
+    }
+
+    if (UCOP_SET_L) { /* load */
+        tmp = gen_ld32(addr, IS_USER(s));
+        ucf64_gen_st32(tmp, UCOP_REG_D);
+    } else { /* store */
+        tmp = ucf64_gen_ld32(UCOP_REG_D);
+        gen_st32(tmp, addr, IS_USER(s));
+    }
+
+    if (!UCOP_SET_P) {
+        offset = UCOP_IMM10 << 2;
+        if (!UCOP_SET_U) {
+            offset = -offset;
+        }
+        if (offset != 0) {
+            tcg_gen_addi_i32(addr, addr, offset);
+        }
+    }
+    if (UCOP_SET_W) {
+        store_reg(s, UCOP_REG_N, addr);
+    } else {
+        dead_tmp(addr);
+    }
+}
+
+/* UniCore-F64 load/store multiple words */
+static void do_ucf64_ldst_m(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    unsigned int i;
+    int j, n, freg;
+    TCGv tmp;
+    TCGv addr;
+
+    if (UCOP_REG_D != 0) {
+        ILLEGAL;
+    }
+    if (UCOP_REG_N == 31) {
+        ILLEGAL;
+    }
+    if ((insn << 24) == 0) {
+        ILLEGAL;
+    }
+
+    addr = load_reg(s, UCOP_REG_N);
+
+    n = 0;
+    for (i = 0; i < 8; i++) {
+        if (UCOP_SET(i)) {
+            n++;
+        }
+    }
+
+    if (UCOP_SET_U) {
+        if (UCOP_SET_P) { /* pre increment */
+            tcg_gen_addi_i32(addr, addr, 4);
+        } /* unnecessary to do anything when post increment */
+    } else {
+        if (UCOP_SET_P) { /* pre decrement */
+            tcg_gen_addi_i32(addr, addr, -(n * 4));
+        } else { /* post decrement */
+            if (n != 1) {
+                tcg_gen_addi_i32(addr, addr, -((n - 1) * 4));
+            }
+        }
+    }
+
+    freg = ((insn >> 8) & 3) << 3; /* freg should be 0, 8, 16, 24 */
+
+    for (i = 0, j = 0; i < 8; i++, freg++) {
+        if (!UCOP_SET(i)) {
+            continue;
+        }
+
+        if (UCOP_SET_L) { /* load */
+            tmp = gen_ld32(addr, IS_USER(s));
+            ucf64_gen_st32(tmp, freg);
+        } else { /* store */
+            tmp = ucf64_gen_ld32(freg);
+            gen_st32(tmp, addr, IS_USER(s));
+        }
+
+        j++;
+        /* unnecessary to add after the last transfer */
+        if (j != n) {
+            tcg_gen_addi_i32(addr, addr, 4);
+        }
+    }
+
+    if (UCOP_SET_W) { /* write back */
+        if (UCOP_SET_U) {
+            if (!UCOP_SET_P) { /* post increment */
+                tcg_gen_addi_i32(addr, addr, 4);
+            } /* unnecessary to do anything when pre increment */
+        } else {
+            if (UCOP_SET_P) {
+                /* pre decrement */
+                if (n != 1) {
+                    tcg_gen_addi_i32(addr, addr, -((n - 1) * 4));
+                }
+            } else {
+                /* post decrement */
+                tcg_gen_addi_i32(addr, addr, -(n * 4));
+            }
+        }
+        store_reg(s, UCOP_REG_N, addr);
+    } else {
+        dead_tmp(addr);
+    }
+}
+
+/* UniCore-F64 mrc/mcr */
+static void do_ucf64_trans(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    TCGv tmp;
+
+    if ((insn & 0xfe0003ff) == 0xe2000000) {
+        /* control register */
+        if ((UCOP_REG_N != UC32_UCF64_FPSCR) || (UCOP_REG_D == 31)) {
+            ILLEGAL;
+        }
+        if (UCOP_SET(24)) {
+            /* CFF */
+            tmp = new_tmp();
+            gen_helper_ucf64_get_fpscr(tmp, cpu_env);
+            store_reg(s, UCOP_REG_D, tmp);
+        } else {
+            /* CTF */
+            tmp = load_reg(s, UCOP_REG_D);
+            gen_helper_ucf64_set_fpscr(cpu_env, tmp);
+            dead_tmp(tmp);
+            gen_lookup_tb(s);
+        }
+        return;
+    }
+    if ((insn & 0xfe0003ff) == 0xe0000000) {
+        /* general register */
+        if (UCOP_REG_D == 31) {
+            ILLEGAL;
+        }
+        if (UCOP_SET(24)) { /* MFF */
+            tmp = ucf64_gen_ld32(UCOP_REG_N);
+            store_reg(s, UCOP_REG_D, tmp);
+        } else { /* MTF */
+            tmp = load_reg(s, UCOP_REG_D);
+            ucf64_gen_st32(tmp, UCOP_REG_N);
+        }
+        return;
+    }
+    if ((insn & 0xfb000000) == 0xe9000000) {
+        /* MFFC */
+        if (UCOP_REG_D != 31) {
+            ILLEGAL;
+        }
+        if (UCOP_UCF64_COND & 0x8) {
+            ILLEGAL;
+        }
+
+        tmp = new_tmp();
+        tcg_gen_movi_i32(tmp, UCOP_UCF64_COND);
+        if (UCOP_SET(26)) {
+            tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_N));
+            tcg_gen_ld_i64(cpu_F1d, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+            gen_helper_ucf64_cmpd(cpu_F0d, cpu_F1d, tmp, cpu_env);
+        } else {
+            tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_N));
+            tcg_gen_ld_i32(cpu_F1s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+            gen_helper_ucf64_cmps(cpu_F0s, cpu_F1s, tmp, cpu_env);
+        }
+        dead_tmp(tmp);
+        return;
+    }
+    ILLEGAL;
+}
+
+/* UniCore-F64 convert instructions */
+static void do_ucf64_fcvt(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+
+    if (UCOP_UCF64_FMT == 3) {
+        ILLEGAL;
+    }
+    if (UCOP_REG_N != 0) {
+        ILLEGAL;
+    }
+    switch (UCOP_UCF64_FUNC) {
+    case 0: /* cvt.s */
+        switch (UCOP_UCF64_FMT) {
+        case 1 /* d */:
+            tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+            gen_helper_ucf64_df2sf(cpu_F0s, cpu_F0d, cpu_env);
+            tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D));
+            break;
+        case 2 /* w */:
+            tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+            gen_helper_ucf64_si2sf(cpu_F0s, cpu_F0s, cpu_env);
+            tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D));
+            break;
+        default /* s */:
+            ILLEGAL;
+            break;
+        }
+        break;
+    case 1: /* cvt.d */
+        switch (UCOP_UCF64_FMT) {
+        case 0 /* s */:
+            tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+            gen_helper_ucf64_sf2df(cpu_F0d, cpu_F0s, cpu_env);
+            tcg_gen_st_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_D));
+            break;
+        case 2 /* w */:
+            tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+            gen_helper_ucf64_si2df(cpu_F0d, cpu_F0s, cpu_env);
+            tcg_gen_st_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_D));
+            break;
+        default /* d */:
+            ILLEGAL;
+            break;
+        }
+        break;
+    case 4: /* cvt.w */
+        switch (UCOP_UCF64_FMT) {
+        case 0 /* s */:
+            tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+            gen_helper_ucf64_sf2si(cpu_F0s, cpu_F0s, cpu_env);
+            tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D));
+            break;
+        case 1 /* d */:
+            tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+            gen_helper_ucf64_df2si(cpu_F0s, cpu_F0d, cpu_env);
+            tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D));
+            break;
+    default /* w */:
+            ILLEGAL;
+            break;
+        }
+        break;
+    default:
+        ILLEGAL;
+    }
+}
+
+/* UniCore-F64 compare instructions */
+static void do_ucf64_fcmp(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+
+    if (UCOP_SET(25)) {
+        ILLEGAL;
+    }
+    if (UCOP_REG_D != 0) {
+        ILLEGAL;
+    }
+
+    ILLEGAL; /* TODO */
+    if (UCOP_SET(24)) {
+        tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_N));
+        tcg_gen_ld_i64(cpu_F1d, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+        /* gen_helper_ucf64_cmpd(cpu_F0d, cpu_F1d, cpu_env); */
+    } else {
+        tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_N));
+        tcg_gen_ld_i32(cpu_F1s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
+        /* gen_helper_ucf64_cmps(cpu_F0s, cpu_F1s, cpu_env); */
+    }
+}
+
+#define gen_helper_ucf64_movs(x, y)      do { } while (0)
+#define gen_helper_ucf64_movd(x, y)      do { } while (0)
+
+#define UCF64_OP1(name)    do {                           \
+        if (UCOP_REG_N != 0) {                            \
+            ILLEGAL;                                      \
+        }                                                 \
+        switch (UCOP_UCF64_FMT) {                         \
+        case 0 /* s */:                                   \
+            tcg_gen_ld_i32(cpu_F0s, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_M)); \
+            gen_helper_ucf64_##name##s(cpu_F0s, cpu_F0s); \
+            tcg_gen_st_i32(cpu_F0s, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_D)); \
+            break;                                        \
+        case 1 /* d */:                                   \
+            tcg_gen_ld_i64(cpu_F0d, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_M)); \
+            gen_helper_ucf64_##name##d(cpu_F0d, cpu_F0d); \
+            tcg_gen_st_i64(cpu_F0d, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_D)); \
+            break;                                        \
+        case 2 /* w */:                                   \
+            ILLEGAL;                                      \
+            break;                                        \
+        }                                                 \
+    } while (0)
+
+#define UCF64_OP2(name)    do {                           \
+        switch (UCOP_UCF64_FMT) {                         \
+        case 0 /* s */:                                   \
+            tcg_gen_ld_i32(cpu_F0s, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_N)); \
+            tcg_gen_ld_i32(cpu_F1s, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_M)); \
+            gen_helper_ucf64_##name##s(cpu_F0s,           \
+                           cpu_F0s, cpu_F1s, cpu_env);    \
+            tcg_gen_st_i32(cpu_F0s, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_D)); \
+            break;                                        \
+        case 1 /* d */:                                   \
+            tcg_gen_ld_i64(cpu_F0d, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_N)); \
+            tcg_gen_ld_i64(cpu_F1d, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_M)); \
+            gen_helper_ucf64_##name##d(cpu_F0d,           \
+                           cpu_F0d, cpu_F1d, cpu_env);    \
+            tcg_gen_st_i64(cpu_F0d, cpu_env,              \
+                           ucf64_reg_offset(UCOP_REG_D)); \
+            break;                                        \
+        case 2 /* w */:                                   \
+            ILLEGAL;                                      \
+            break;                                        \
+        }                                                 \
+    } while (0)
+
+/* UniCore-F64 data processing */
+static void do_ucf64_datap(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+
+    if (UCOP_UCF64_FMT == 3) {
+        ILLEGAL;
+    }
+    switch (UCOP_UCF64_FUNC) {
+    case 0: /* add */
+        UCF64_OP2(add);
+        break;
+    case 1: /* sub */
+        UCF64_OP2(sub);
+        break;
+    case 2: /* mul */
+        UCF64_OP2(mul);
+        break;
+    case 4: /* div */
+        UCF64_OP2(div);
+        break;
+    case 5: /* abs */
+        UCF64_OP1(abs);
+        break;
+    case 6: /* mov */
+        UCF64_OP1(mov);
+        break;
+    case 7: /* neg */
+        UCF64_OP1(neg);
+        break;
+    default:
+        ILLEGAL;
+    }
+}
+
+/* Disassemble an F64 instruction */
+static void disas_ucf64_insn(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+
+    if (!UCOP_SET(29)) {
+        if (UCOP_SET(26)) {
+            do_ucf64_ldst_m(env, s, insn);
+        } else {
+            do_ucf64_ldst_i(env, s, insn);
+        }
+    } else {
+        if (UCOP_SET(5)) {
+            switch ((insn >> 26) & 0x3) {
+            case 0:
+                do_ucf64_datap(env, s, insn);
+                break;
+            case 1:
+                ILLEGAL;
+                break;
+            case 2:
+                do_ucf64_fcvt(env, s, insn);
+                break;
+            case 3:
+                do_ucf64_fcmp(env, s, insn);
+                break;
+            }
+        } else {
+            do_ucf64_trans(env, s, insn);
+        }
+    }
+}
+
+static inline void gen_goto_tb(DisasContext *s, int n, uint32_t dest)
+{
+    TranslationBlock *tb;
+
+    tb = s->tb;
+    if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
+        tcg_gen_goto_tb(n);
+        gen_set_pc_im(dest);
+        tcg_gen_exit_tb((uintptr_t)tb + n);
+    } else {
+        gen_set_pc_im(dest);
+        tcg_gen_exit_tb(0);
+    }
+}
+
+static inline void gen_jmp(DisasContext *s, uint32_t dest)
+{
+    if (unlikely(s->singlestep_enabled)) {
+        /* An indirect jump so that we still trigger the debug exception.  */
+        gen_bx_im(s, dest);
+    } else {
+        gen_goto_tb(s, 0, dest);
+        s->is_jmp = DISAS_TB_JUMP;
+    }
+}
+
+/* Returns nonzero if access to the PSR is not permitted. Marks t0 as dead. */
+static int gen_set_psr(DisasContext *s, uint32_t mask, int bsr, TCGv t0)
+{
+    TCGv tmp;
+    if (bsr) {
+        /* ??? This is also undefined in system mode.  */
+        if (IS_USER(s)) {
+            return 1;
+        }
+
+        tmp = load_cpu_field(bsr);
+        tcg_gen_andi_i32(tmp, tmp, ~mask);
+        tcg_gen_andi_i32(t0, t0, mask);
+        tcg_gen_or_i32(tmp, tmp, t0);
+        store_cpu_field(tmp, bsr);
+    } else {
+        gen_set_asr(t0, mask);
+    }
+    dead_tmp(t0);
+    gen_lookup_tb(s);
+    return 0;
+}
+
+/* Generate an old-style exception return. Marks pc as dead. */
+static void gen_exception_return(DisasContext *s, TCGv pc)
+{
+    TCGv tmp;
+    store_reg(s, 31, pc);
+    tmp = load_cpu_field(bsr);
+    gen_set_asr(tmp, 0xffffffff);
+    dead_tmp(tmp);
+    s->is_jmp = DISAS_UPDATE;
+}
+
+static void disas_coproc_insn(CPUUniCore32State *env, DisasContext *s,
+        uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+
+    switch (UCOP_CPNUM) {
+#ifndef CONFIG_USER_ONLY
+    case 0:
+        disas_cp0_insn(env, s, insn);
+        break;
+    case 1:
+        disas_ocd_insn(env, s, insn);
+        break;
+#endif
+    case 2:
+        disas_ucf64_insn(env, s, insn);
+        break;
+    default:
+        /* Unknown coprocessor. */
+        cpu_abort(CPU(cpu), "Unknown coprocessor!");
+    }
+}
+
+/* data processing instructions */
+static void do_datap(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    TCGv tmp;
+    TCGv tmp2;
+    int logic_cc;
+
+    if (UCOP_OPCODES == 0x0f || UCOP_OPCODES == 0x0d) {
+        if (UCOP_SET(23)) { /* CMOV instructions */
+            if ((UCOP_CMOV_COND == 0xe) || (UCOP_CMOV_COND == 0xf)) {
+                ILLEGAL;
+            }
+            /* if not always execute, we generate a conditional jump to
+               next instruction */
+            s->condlabel = gen_new_label();
+            gen_test_cc(UCOP_CMOV_COND ^ 1, s->condlabel);
+            s->condjmp = 1;
+        }
+    }
+
+    logic_cc = table_logic_cc[UCOP_OPCODES] & (UCOP_SET_S >> 24);
+
+    if (UCOP_SET(29)) {
+        unsigned int val;
+        /* immediate operand */
+        val = UCOP_IMM_9;
+        if (UCOP_SH_IM) {
+            val = (val >> UCOP_SH_IM) | (val << (32 - UCOP_SH_IM));
+        }
+        tmp2 = new_tmp();
+        tcg_gen_movi_i32(tmp2, val);
+        if (logic_cc && UCOP_SH_IM) {
+            gen_set_CF_bit31(tmp2);
+        }
+   } else {
+        /* register */
+        tmp2 = load_reg(s, UCOP_REG_M);
+        if (UCOP_SET(5)) {
+            tmp = load_reg(s, UCOP_REG_S);
+            gen_uc32_shift_reg(tmp2, UCOP_SH_OP, tmp, logic_cc);
+        } else {
+            gen_uc32_shift_im(tmp2, UCOP_SH_OP, UCOP_SH_IM, logic_cc);
+        }
+    }
+
+    if (UCOP_OPCODES != 0x0f && UCOP_OPCODES != 0x0d) {
+        tmp = load_reg(s, UCOP_REG_N);
+    } else {
+        TCGV_UNUSED(tmp);
+    }
+
+    switch (UCOP_OPCODES) {
+    case 0x00:
+        tcg_gen_and_i32(tmp, tmp, tmp2);
+        if (logic_cc) {
+            gen_logic_CC(tmp);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    case 0x01:
+        tcg_gen_xor_i32(tmp, tmp, tmp2);
+        if (logic_cc) {
+            gen_logic_CC(tmp);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    case 0x02:
+        if (UCOP_SET_S && UCOP_REG_D == 31) {
+            /* SUBS r31, ... is used for exception return.  */
+            if (IS_USER(s)) {
+                ILLEGAL;
+            }
+            gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2);
+            gen_exception_return(s, tmp);
+        } else {
+            if (UCOP_SET_S) {
+                gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2);
+            } else {
+                tcg_gen_sub_i32(tmp, tmp, tmp2);
+            }
+            store_reg_bx(s, UCOP_REG_D, tmp);
+        }
+        break;
+    case 0x03:
+        if (UCOP_SET_S) {
+            gen_helper_sub_cc(tmp, cpu_env, tmp2, tmp);
+        } else {
+            tcg_gen_sub_i32(tmp, tmp2, tmp);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    case 0x04:
+        if (UCOP_SET_S) {
+            gen_helper_add_cc(tmp, cpu_env, tmp, tmp2);
+        } else {
+            tcg_gen_add_i32(tmp, tmp, tmp2);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    case 0x05:
+        if (UCOP_SET_S) {
+            gen_helper_adc_cc(tmp, cpu_env, tmp, tmp2);
+        } else {
+            gen_add_carry(tmp, tmp, tmp2);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    case 0x06:
+        if (UCOP_SET_S) {
+            gen_helper_sbc_cc(tmp, cpu_env, tmp, tmp2);
+        } else {
+            gen_sub_carry(tmp, tmp, tmp2);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    case 0x07:
+        if (UCOP_SET_S) {
+            gen_helper_sbc_cc(tmp, cpu_env, tmp2, tmp);
+        } else {
+            gen_sub_carry(tmp, tmp2, tmp);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    case 0x08:
+        if (UCOP_SET_S) {
+            tcg_gen_and_i32(tmp, tmp, tmp2);
+            gen_logic_CC(tmp);
+        }
+        dead_tmp(tmp);
+        break;
+    case 0x09:
+        if (UCOP_SET_S) {
+            tcg_gen_xor_i32(tmp, tmp, tmp2);
+            gen_logic_CC(tmp);
+        }
+        dead_tmp(tmp);
+        break;
+    case 0x0a:
+        if (UCOP_SET_S) {
+            gen_helper_sub_cc(tmp, cpu_env, tmp, tmp2);
+        }
+        dead_tmp(tmp);
+        break;
+    case 0x0b:
+        if (UCOP_SET_S) {
+            gen_helper_add_cc(tmp, cpu_env, tmp, tmp2);
+        }
+        dead_tmp(tmp);
+        break;
+    case 0x0c:
+        tcg_gen_or_i32(tmp, tmp, tmp2);
+        if (logic_cc) {
+            gen_logic_CC(tmp);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    case 0x0d:
+        if (logic_cc && UCOP_REG_D == 31) {
+            /* MOVS r31, ... is used for exception return.  */
+            if (IS_USER(s)) {
+                ILLEGAL;
+            }
+            gen_exception_return(s, tmp2);
+        } else {
+            if (logic_cc) {
+                gen_logic_CC(tmp2);
+            }
+            store_reg_bx(s, UCOP_REG_D, tmp2);
+        }
+        break;
+    case 0x0e:
+        tcg_gen_andc_i32(tmp, tmp, tmp2);
+        if (logic_cc) {
+            gen_logic_CC(tmp);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp);
+        break;
+    default:
+    case 0x0f:
+        tcg_gen_not_i32(tmp2, tmp2);
+        if (logic_cc) {
+            gen_logic_CC(tmp2);
+        }
+        store_reg_bx(s, UCOP_REG_D, tmp2);
+        break;
+    }
+    if (UCOP_OPCODES != 0x0f && UCOP_OPCODES != 0x0d) {
+        dead_tmp(tmp2);
+    }
+}
+
+/* multiply */
+static void do_mult(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    TCGv tmp, tmp2, tmp3, tmp4;
+
+    if (UCOP_SET(27)) {
+        /* 64 bit mul */
+        tmp = load_reg(s, UCOP_REG_M);
+        tmp2 = load_reg(s, UCOP_REG_N);
+        if (UCOP_SET(26)) {
+            tcg_gen_muls2_i32(tmp, tmp2, tmp, tmp2);
+        } else {
+            tcg_gen_mulu2_i32(tmp, tmp2, tmp, tmp2);
+        }
+        if (UCOP_SET(25)) { /* mult accumulate */
+            tmp3 = load_reg(s, UCOP_REG_LO);
+            tmp4 = load_reg(s, UCOP_REG_HI);
+            tcg_gen_add2_i32(tmp, tmp2, tmp, tmp2, tmp3, tmp4);
+            dead_tmp(tmp3);
+            dead_tmp(tmp4);
+        }
+        store_reg(s, UCOP_REG_LO, tmp);
+        store_reg(s, UCOP_REG_HI, tmp2);
+    } else {
+        /* 32 bit mul */
+        tmp = load_reg(s, UCOP_REG_M);
+        tmp2 = load_reg(s, UCOP_REG_N);
+        tcg_gen_mul_i32(tmp, tmp, tmp2);
+        dead_tmp(tmp2);
+        if (UCOP_SET(25)) {
+            /* Add */
+            tmp2 = load_reg(s, UCOP_REG_S);
+            tcg_gen_add_i32(tmp, tmp, tmp2);
+            dead_tmp(tmp2);
+        }
+        if (UCOP_SET_S) {
+            gen_logic_CC(tmp);
+        }
+        store_reg(s, UCOP_REG_D, tmp);
+    }
+}
+
+/* miscellaneous instructions */
+static void do_misc(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    unsigned int val;
+    TCGv tmp;
+
+    if ((insn & 0xffffffe0) == 0x10ffc120) {
+        /* Trivial implementation equivalent to bx.  */
+        tmp = load_reg(s, UCOP_REG_M);
+        gen_bx(s, tmp);
+        return;
+    }
+
+    if ((insn & 0xfbffc000) == 0x30ffc000) {
+        /* PSR = immediate */
+        val = UCOP_IMM_9;
+        if (UCOP_SH_IM) {
+            val = (val >> UCOP_SH_IM) | (val << (32 - UCOP_SH_IM));
+        }
+        tmp = new_tmp();
+        tcg_gen_movi_i32(tmp, val);
+        if (gen_set_psr(s, ~ASR_RESERVED, UCOP_SET_B, tmp)) {
+            ILLEGAL;
+        }
+        return;
+    }
+
+    if ((insn & 0xfbffffe0) == 0x12ffc020) {
+        /* PSR.flag = reg */
+        tmp = load_reg(s, UCOP_REG_M);
+        if (gen_set_psr(s, ASR_NZCV, UCOP_SET_B, tmp)) {
+            ILLEGAL;
+        }
+        return;
+    }
+
+    if ((insn & 0xfbffffe0) == 0x10ffc020) {
+        /* PSR = reg */
+        tmp = load_reg(s, UCOP_REG_M);
+        if (gen_set_psr(s, ~ASR_RESERVED, UCOP_SET_B, tmp)) {
+            ILLEGAL;
+        }
+        return;
+    }
+
+    if ((insn & 0xfbf83fff) == 0x10f80000) {
+        /* reg = PSR */
+        if (UCOP_SET_B) {
+            if (IS_USER(s)) {
+                ILLEGAL;
+            }
+            tmp = load_cpu_field(bsr);
+        } else {
+            tmp = new_tmp();
+            gen_helper_asr_read(tmp, cpu_env);
+        }
+        store_reg(s, UCOP_REG_D, tmp);
+        return;
+    }
+
+    if ((insn & 0xfbf83fe0) == 0x12f80120) {
+        /* clz */
+        tmp = load_reg(s, UCOP_REG_M);
+        if (UCOP_SET(26)) {
+            gen_helper_clo(tmp, tmp);
+        } else {
+            gen_helper_clz(tmp, tmp);
+        }
+        store_reg(s, UCOP_REG_D, tmp);
+        return;
+    }
+
+    /* otherwise */
+    ILLEGAL;
+}
+
+/* load/store I_offset and R_offset */
+static void do_ldst_ir(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    unsigned int mmu_idx;
+    TCGv tmp;
+    TCGv tmp2;
+
+    tmp2 = load_reg(s, UCOP_REG_N);
+    mmu_idx = (IS_USER(s) || (!UCOP_SET_P && UCOP_SET_W));
+
+    /* immediate */
+    if (UCOP_SET_P) {
+        gen_add_data_offset(s, insn, tmp2);
+    }
+
+    if (UCOP_SET_L) {
+        /* load */
+        if (UCOP_SET_B) {
+            tmp = gen_ld8u(tmp2, mmu_idx);
+        } else {
+            tmp = gen_ld32(tmp2, mmu_idx);
+        }
+    } else {
+        /* store */
+        tmp = load_reg(s, UCOP_REG_D);
+        if (UCOP_SET_B) {
+            gen_st8(tmp, tmp2, mmu_idx);
+        } else {
+            gen_st32(tmp, tmp2, mmu_idx);
+        }
+    }
+    if (!UCOP_SET_P) {
+        gen_add_data_offset(s, insn, tmp2);
+        store_reg(s, UCOP_REG_N, tmp2);
+    } else if (UCOP_SET_W) {
+        store_reg(s, UCOP_REG_N, tmp2);
+    } else {
+        dead_tmp(tmp2);
+    }
+    if (UCOP_SET_L) {
+        /* Complete the load.  */
+        if (UCOP_REG_D == 31) {
+            gen_bx(s, tmp);
+        } else {
+            store_reg(s, UCOP_REG_D, tmp);
+        }
+    }
+}
+
+/* SWP instruction */
+static void do_swap(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    TCGv addr;
+    TCGv tmp;
+    TCGv tmp2;
+
+    if ((insn & 0xff003fe0) != 0x40000120) {
+        ILLEGAL;
+    }
+
+    /* ??? This is not really atomic.  However we know
+       we never have multiple CPUs running in parallel,
+       so it is good enough.  */
+    addr = load_reg(s, UCOP_REG_N);
+    tmp = load_reg(s, UCOP_REG_M);
+    if (UCOP_SET_B) {
+        tmp2 = gen_ld8u(addr, IS_USER(s));
+        gen_st8(tmp, addr, IS_USER(s));
+    } else {
+        tmp2 = gen_ld32(addr, IS_USER(s));
+        gen_st32(tmp, addr, IS_USER(s));
+    }
+    dead_tmp(addr);
+    store_reg(s, UCOP_REG_D, tmp2);
+}
+
+/* load/store hw/sb */
+static void do_ldst_hwsb(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    TCGv addr;
+    TCGv tmp;
+
+    if (UCOP_SH_OP == 0) {
+        do_swap(env, s, insn);
+        return;
+    }
+
+    addr = load_reg(s, UCOP_REG_N);
+    if (UCOP_SET_P) {
+        gen_add_datah_offset(s, insn, addr);
+    }
+
+    if (UCOP_SET_L) { /* load */
+        switch (UCOP_SH_OP) {
+        case 1:
+            tmp = gen_ld16u(addr, IS_USER(s));
+            break;
+        case 2:
+            tmp = gen_ld8s(addr, IS_USER(s));
+            break;
+        default: /* see do_swap */
+        case 3:
+            tmp = gen_ld16s(addr, IS_USER(s));
+            break;
+        }
+    } else { /* store */
+        if (UCOP_SH_OP != 1) {
+            ILLEGAL;
+        }
+        tmp = load_reg(s, UCOP_REG_D);
+        gen_st16(tmp, addr, IS_USER(s));
+    }
+    /* Perform base writeback before the loaded value to
+       ensure correct behavior with overlapping index registers. */
+    if (!UCOP_SET_P) {
+        gen_add_datah_offset(s, insn, addr);
+        store_reg(s, UCOP_REG_N, addr);
+    } else if (UCOP_SET_W) {
+        store_reg(s, UCOP_REG_N, addr);
+    } else {
+        dead_tmp(addr);
+    }
+    if (UCOP_SET_L) {
+        /* Complete the load.  */
+        store_reg(s, UCOP_REG_D, tmp);
+    }
+}
+
+/* load/store multiple words */
+static void do_ldst_m(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    unsigned int val, i, mmu_idx;
+    int j, n, reg, user, loaded_base;
+    TCGv tmp;
+    TCGv tmp2;
+    TCGv addr;
+    TCGv loaded_var;
+
+    if (UCOP_SET(7)) {
+        ILLEGAL;
+    }
+    /* XXX: store correct base if write back */
+    user = 0;
+    if (UCOP_SET_B) { /* S bit in instruction table */
+        if (IS_USER(s)) {
+            ILLEGAL; /* only usable in supervisor mode */
+        }
+        if (UCOP_SET(18) == 0) { /* pc reg */
+            user = 1;
+        }
+    }
+
+    mmu_idx = (IS_USER(s) || (!UCOP_SET_P && UCOP_SET_W));
+    addr = load_reg(s, UCOP_REG_N);
+
+    /* compute total size */
+    loaded_base = 0;
+    TCGV_UNUSED(loaded_var);
+    n = 0;
+    for (i = 0; i < 6; i++) {
+        if (UCOP_SET(i)) {
+            n++;
+        }
+    }
+    for (i = 9; i < 19; i++) {
+        if (UCOP_SET(i)) {
+            n++;
+        }
+    }
+    /* XXX: test invalid n == 0 case ? */
+    if (UCOP_SET_U) {
+        if (UCOP_SET_P) {
+            /* pre increment */
+            tcg_gen_addi_i32(addr, addr, 4);
+        } else {
+            /* post increment */
+        }
+    } else {
+        if (UCOP_SET_P) {
+            /* pre decrement */
+            tcg_gen_addi_i32(addr, addr, -(n * 4));
+        } else {
+            /* post decrement */
+            if (n != 1) {
+                tcg_gen_addi_i32(addr, addr, -((n - 1) * 4));
+            }
+        }
+    }
+
+    j = 0;
+    reg = UCOP_SET(6) ? 16 : 0;
+    for (i = 0; i < 19; i++, reg++) {
+        if (i == 6) {
+            i = i + 3;
+        }
+        if (UCOP_SET(i)) {
+            if (UCOP_SET_L) { /* load */
+                tmp = gen_ld32(addr, mmu_idx);
+                if (reg == 31) {
+                    gen_bx(s, tmp);
+                } else if (user) {
+                    tmp2 = tcg_const_i32(reg);
+                    gen_helper_set_user_reg(cpu_env, tmp2, tmp);
+                    tcg_temp_free_i32(tmp2);
+                    dead_tmp(tmp);
+                } else if (reg == UCOP_REG_N) {
+                    loaded_var = tmp;
+                    loaded_base = 1;
+                } else {
+                    store_reg(s, reg, tmp);
+                }
+            } else { /* store */
+                if (reg == 31) {
+                    /* special case: r31 = PC + 4 */
+                    val = (long)s->pc;
+                    tmp = new_tmp();
+                    tcg_gen_movi_i32(tmp, val);
+                } else if (user) {
+                    tmp = new_tmp();
+                    tmp2 = tcg_const_i32(reg);
+                    gen_helper_get_user_reg(tmp, cpu_env, tmp2);
+                    tcg_temp_free_i32(tmp2);
+                } else {
+                    tmp = load_reg(s, reg);
+                }
+                gen_st32(tmp, addr, mmu_idx);
+            }
+            j++;
+            /* no need to add after the last transfer */
+            if (j != n) {
+                tcg_gen_addi_i32(addr, addr, 4);
+            }
+        }
+    }
+    if (UCOP_SET_W) { /* write back */
+        if (UCOP_SET_U) {
+            if (UCOP_SET_P) {
+                /* pre increment */
+            } else {
+                /* post increment */
+                tcg_gen_addi_i32(addr, addr, 4);
+            }
+        } else {
+            if (UCOP_SET_P) {
+                /* pre decrement */
+                if (n != 1) {
+                    tcg_gen_addi_i32(addr, addr, -((n - 1) * 4));
+                }
+            } else {
+                /* post decrement */
+                tcg_gen_addi_i32(addr, addr, -(n * 4));
+            }
+        }
+        store_reg(s, UCOP_REG_N, addr);
+    } else {
+        dead_tmp(addr);
+    }
+    if (loaded_base) {
+        store_reg(s, UCOP_REG_N, loaded_var);
+    }
+    if (UCOP_SET_B && !user) {
+        /* Restore ASR from BSR.  */
+        tmp = load_cpu_field(bsr);
+        gen_set_asr(tmp, 0xffffffff);
+        dead_tmp(tmp);
+        s->is_jmp = DISAS_UPDATE;
+    }
+}
+
+/* branch (and link) */
+static void do_branch(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    unsigned int val;
+    int32_t offset;
+    TCGv tmp;
+
+    if (UCOP_COND == 0xf) {
+        ILLEGAL;
+    }
+
+    if (UCOP_COND != 0xe) {
+        /* if not always execute, we generate a conditional jump to
+           next instruction */
+        s->condlabel = gen_new_label();
+        gen_test_cc(UCOP_COND ^ 1, s->condlabel);
+        s->condjmp = 1;
+    }
+
+    val = (int32_t)s->pc;
+    if (UCOP_SET_L) {
+        tmp = new_tmp();
+        tcg_gen_movi_i32(tmp, val);
+        store_reg(s, 30, tmp);
+    }
+    offset = (((int32_t)insn << 8) >> 8);
+    val += (offset << 2); /* unicore is pc+4 */
+    gen_jmp(s, val);
+}
+
+static void disas_uc32_insn(CPUUniCore32State *env, DisasContext *s)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    unsigned int insn;
+
+    insn = cpu_ldl_code(env, s->pc);
+    s->pc += 4;
+
+    /* UniCore instructions class:
+     * AAAB BBBC xxxx xxxx xxxx xxxD xxEx xxxx
+     * AAA  : see switch case
+     * BBBB : opcodes or cond or PUBW
+     * C    : S OR L
+     * D    : 8
+     * E    : 5
+     */
+    switch (insn >> 29) {
+    case 0x0:
+        if (UCOP_SET(5) && UCOP_SET(8) && !UCOP_SET(28)) {
+            do_mult(env, s, insn);
+            break;
+        }
+
+        if (UCOP_SET(8)) {
+            do_misc(env, s, insn);
+            break;
+        }
+    case 0x1:
+        if (((UCOP_OPCODES >> 2) == 2) && !UCOP_SET_S) {
+            do_misc(env, s, insn);
+            break;
+        }
+        do_datap(env, s, insn);
+        break;
+
+    case 0x2:
+        if (UCOP_SET(8) && UCOP_SET(5)) {
+            do_ldst_hwsb(env, s, insn);
+            break;
+        }
+        if (UCOP_SET(8) || UCOP_SET(5)) {
+            ILLEGAL;
+        }
+    case 0x3:
+        do_ldst_ir(env, s, insn);
+        break;
+
+    case 0x4:
+        if (UCOP_SET(8)) {
+            ILLEGAL; /* extended instructions */
+        }
+        do_ldst_m(env, s, insn);
+        break;
+    case 0x5:
+        do_branch(env, s, insn);
+        break;
+    case 0x6:
+        /* Coprocessor.  */
+        disas_coproc_insn(env, s, insn);
+        break;
+    case 0x7:
+        if (!UCOP_SET(28)) {
+            disas_coproc_insn(env, s, insn);
+            break;
+        }
+        if ((insn & 0xff000000) == 0xff000000) { /* syscall */
+            gen_set_pc_im(s->pc);
+            s->is_jmp = DISAS_SYSCALL;
+            break;
+        }
+        ILLEGAL;
+    }
+}
+
+/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
+   basic block 'tb'.  */
+void gen_intermediate_code(CPUUniCore32State *env, TranslationBlock *tb)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    CPUState *cs = CPU(cpu);
+    DisasContext dc1, *dc = &dc1;
+    target_ulong pc_start;
+    uint32_t next_page_start;
+    int num_insns;
+    int max_insns;
+
+    /* generate intermediate code */
+    num_temps = 0;
+
+    pc_start = tb->pc;
+
+    dc->tb = tb;
+
+    dc->is_jmp = DISAS_NEXT;
+    dc->pc = pc_start;
+    dc->singlestep_enabled = cs->singlestep_enabled;
+    dc->condjmp = 0;
+    cpu_F0s = tcg_temp_new_i32();
+    cpu_F1s = tcg_temp_new_i32();
+    cpu_F0d = tcg_temp_new_i64();
+    cpu_F1d = tcg_temp_new_i64();
+    next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
+    num_insns = 0;
+    max_insns = tb->cflags & CF_COUNT_MASK;
+    if (max_insns == 0) {
+        max_insns = CF_COUNT_MASK;
+    }
+    if (max_insns > TCG_MAX_INSNS) {
+        max_insns = TCG_MAX_INSNS;
+    }
+
+#ifndef CONFIG_USER_ONLY
+    if ((env->uncached_asr & ASR_M) == ASR_MODE_USER) {
+        dc->user = 1;
+    } else {
+        dc->user = 0;
+    }
+#endif
+
+    gen_tb_start(tb);
+    do {
+        tcg_gen_insn_start(dc->pc);
+        num_insns++;
+
+        if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) {
+            gen_set_pc_im(dc->pc);
+            gen_exception(EXCP_DEBUG);
+            dc->is_jmp = DISAS_JUMP;
+            /* The address covered by the breakpoint must be included in
+               [tb->pc, tb->pc + tb->size) in order to for it to be
+               properly cleared -- thus we increment the PC here so that
+               the logic setting tb->size below does the right thing.  */
+            dc->pc += 4;
+            goto done_generating;
+        }
+
+        if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) {
+            gen_io_start();
+        }
+
+        disas_uc32_insn(env, dc);
+
+        if (num_temps) {
+            fprintf(stderr, "Internal resource leak before %08x\n", dc->pc);
+            num_temps = 0;
+        }
+
+        if (dc->condjmp && !dc->is_jmp) {
+            gen_set_label(dc->condlabel);
+            dc->condjmp = 0;
+        }
+        /* Translation stops when a conditional branch is encountered.
+         * Otherwise the subsequent code could get translated several times.
+         * Also stop translation when a page boundary is reached.  This
+         * ensures prefetch aborts occur at the right place.  */
+    } while (!dc->is_jmp && !tcg_op_buf_full() &&
+             !cs->singlestep_enabled &&
+             !singlestep &&
+             dc->pc < next_page_start &&
+             num_insns < max_insns);
+
+    if (tb->cflags & CF_LAST_IO) {
+        if (dc->condjmp) {
+            /* FIXME:  This can theoretically happen with self-modifying
+               code.  */
+            cpu_abort(cs, "IO on conditional branch instruction");
+        }
+        gen_io_end();
+    }
+
+    /* At this stage dc->condjmp will only be set when the skipped
+       instruction was a conditional branch or trap, and the PC has
+       already been written.  */
+    if (unlikely(cs->singlestep_enabled)) {
+        /* Make sure the pc is updated, and raise a debug exception.  */
+        if (dc->condjmp) {
+            if (dc->is_jmp == DISAS_SYSCALL) {
+                gen_exception(UC32_EXCP_PRIV);
+            } else {
+                gen_exception(EXCP_DEBUG);
+            }
+            gen_set_label(dc->condlabel);
+        }
+        if (dc->condjmp || !dc->is_jmp) {
+            gen_set_pc_im(dc->pc);
+            dc->condjmp = 0;
+        }
+        if (dc->is_jmp == DISAS_SYSCALL && !dc->condjmp) {
+            gen_exception(UC32_EXCP_PRIV);
+        } else {
+            gen_exception(EXCP_DEBUG);
+        }
+    } else {
+        /* While branches must always occur at the end of an IT block,
+           there are a few other things that can cause us to terminate
+           the TB in the middel of an IT block:
+            - Exception generating instructions (bkpt, swi, undefined).
+            - Page boundaries.
+            - Hardware watchpoints.
+           Hardware breakpoints have already been handled and skip this code.
+         */
+        switch (dc->is_jmp) {
+        case DISAS_NEXT:
+            gen_goto_tb(dc, 1, dc->pc);
+            break;
+        default:
+        case DISAS_JUMP:
+        case DISAS_UPDATE:
+            /* indicate that the hash table must be used to find the next TB */
+            tcg_gen_exit_tb(0);
+            break;
+        case DISAS_TB_JUMP:
+            /* nothing more to generate */
+            break;
+        case DISAS_SYSCALL:
+            gen_exception(UC32_EXCP_PRIV);
+            break;
+        }
+        if (dc->condjmp) {
+            gen_set_label(dc->condlabel);
+            gen_goto_tb(dc, 1, dc->pc);
+            dc->condjmp = 0;
+        }
+    }
+
+done_generating:
+    gen_tb_end(tb, num_insns);
+
+#ifdef DEBUG_DISAS
+    if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
+        qemu_log("----------------\n");
+        qemu_log("IN: %s\n", lookup_symbol(pc_start));
+        log_target_disas(cs, pc_start, dc->pc - pc_start, 0);
+        qemu_log("\n");
+    }
+#endif
+    tb->size = dc->pc - pc_start;
+    tb->icount = num_insns;
+}
+
+static const char *cpu_mode_names[16] = {
+    "USER", "REAL", "INTR", "PRIV", "UM14", "UM15", "UM16", "TRAP",
+    "UM18", "UM19", "UM1A", "EXTN", "UM1C", "UM1D", "UM1E", "SUSR"
+};
+
+#undef UCF64_DUMP_STATE
+#ifdef UCF64_DUMP_STATE
+static void cpu_dump_state_ucf64(CPUUniCore32State *env, FILE *f,
+        fprintf_function cpu_fprintf, int flags)
+{
+    int i;
+    union {
+        uint32_t i;
+        float s;
+    } s0, s1;
+    CPU_DoubleU d;
+    /* ??? This assumes float64 and double have the same layout.
+       Oh well, it's only debug dumps.  */
+    union {
+        float64 f64;
+        double d;
+    } d0;
+
+    for (i = 0; i < 16; i++) {
+        d.d = env->ucf64.regs[i];
+        s0.i = d.l.lower;
+        s1.i = d.l.upper;
+        d0.f64 = d.d;
+        cpu_fprintf(f, "s%02d=%08x(%8g) s%02d=%08x(%8g)",
+                    i * 2, (int)s0.i, s0.s,
+                    i * 2 + 1, (int)s1.i, s1.s);
+        cpu_fprintf(f, " d%02d=%" PRIx64 "(%8g)\n",
+                    i, (uint64_t)d0.f64, d0.d);
+    }
+    cpu_fprintf(f, "FPSCR: %08x\n", (int)env->ucf64.xregs[UC32_UCF64_FPSCR]);
+}
+#else
+#define cpu_dump_state_ucf64(env, file, pr, flags)      do { } while (0)
+#endif
+
+void uc32_cpu_dump_state(CPUState *cs, FILE *f,
+                         fprintf_function cpu_fprintf, int flags)
+{
+    UniCore32CPU *cpu = UNICORE32_CPU(cs);
+    CPUUniCore32State *env = &cpu->env;
+    int i;
+    uint32_t psr;
+
+    for (i = 0; i < 32; i++) {
+        cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]);
+        if ((i % 4) == 3) {
+            cpu_fprintf(f, "\n");
+        } else {
+            cpu_fprintf(f, " ");
+        }
+    }
+    psr = cpu_asr_read(env);
+    cpu_fprintf(f, "PSR=%08x %c%c%c%c %s\n",
+                psr,
+                psr & (1 << 31) ? 'N' : '-',
+                psr & (1 << 30) ? 'Z' : '-',
+                psr & (1 << 29) ? 'C' : '-',
+                psr & (1 << 28) ? 'V' : '-',
+                cpu_mode_names[psr & 0xf]);
+
+    cpu_dump_state_ucf64(env, f, cpu_fprintf, flags);
+}
+
+void restore_state_to_opc(CPUUniCore32State *env, TranslationBlock *tb,
+                          target_ulong *data)
+{
+    env->regs[31] = data[0];
+}
diff --git a/src/target-unicore32/ucf64_helper.c b/src/target-unicore32/ucf64_helper.c
new file mode 100644
index 0000000..5af008f
--- /dev/null
+++ b/src/target-unicore32/ucf64_helper.c
@@ -0,0 +1,324 @@
+/*
+ * UniCore-F64 simulation helpers for QEMU.
+ *
+ * Copyright (C) 2010-2012 Guan Xuetao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation, or any later version.
+ * See the COPYING file in the top-level directory.
+ */
+#include "cpu.h"
+#include "exec/helper-proto.h"
+
+/*
+ * The convention used for UniCore-F64 instructions:
+ *  Single precition routines have a "s" suffix
+ *  Double precision routines have a "d" suffix.
+ */
+
+/* Convert host exception flags to f64 form.  */
+static inline int ucf64_exceptbits_from_host(int host_bits)
+{
+    int target_bits = 0;
+
+    if (host_bits & float_flag_invalid) {
+        target_bits |= UCF64_FPSCR_FLAG_INVALID;
+    }
+    if (host_bits & float_flag_divbyzero) {
+        target_bits |= UCF64_FPSCR_FLAG_DIVZERO;
+    }
+    if (host_bits & float_flag_overflow) {
+        target_bits |= UCF64_FPSCR_FLAG_OVERFLOW;
+    }
+    if (host_bits & float_flag_underflow) {
+        target_bits |= UCF64_FPSCR_FLAG_UNDERFLOW;
+    }
+    if (host_bits & float_flag_inexact) {
+        target_bits |= UCF64_FPSCR_FLAG_INEXACT;
+    }
+    return target_bits;
+}
+
+uint32_t HELPER(ucf64_get_fpscr)(CPUUniCore32State *env)
+{
+    int i;
+    uint32_t fpscr;
+
+    fpscr = (env->ucf64.xregs[UC32_UCF64_FPSCR] & UCF64_FPSCR_MASK);
+    i = get_float_exception_flags(&env->ucf64.fp_status);
+    fpscr |= ucf64_exceptbits_from_host(i);
+    return fpscr;
+}
+
+/* Convert ucf64 exception flags to target form.  */
+static inline int ucf64_exceptbits_to_host(int target_bits)
+{
+    int host_bits = 0;
+
+    if (target_bits & UCF64_FPSCR_FLAG_INVALID) {
+        host_bits |= float_flag_invalid;
+    }
+    if (target_bits & UCF64_FPSCR_FLAG_DIVZERO) {
+        host_bits |= float_flag_divbyzero;
+    }
+    if (target_bits & UCF64_FPSCR_FLAG_OVERFLOW) {
+        host_bits |= float_flag_overflow;
+    }
+    if (target_bits & UCF64_FPSCR_FLAG_UNDERFLOW) {
+        host_bits |= float_flag_underflow;
+    }
+    if (target_bits & UCF64_FPSCR_FLAG_INEXACT) {
+        host_bits |= float_flag_inexact;
+    }
+    return host_bits;
+}
+
+void HELPER(ucf64_set_fpscr)(CPUUniCore32State *env, uint32_t val)
+{
+    UniCore32CPU *cpu = uc32_env_get_cpu(env);
+    int i;
+    uint32_t changed;
+
+    changed = env->ucf64.xregs[UC32_UCF64_FPSCR];
+    env->ucf64.xregs[UC32_UCF64_FPSCR] = (val & UCF64_FPSCR_MASK);
+
+    changed ^= val;
+    if (changed & (UCF64_FPSCR_RND_MASK)) {
+        i = UCF64_FPSCR_RND(val);
+        switch (i) {
+        case 0:
+            i = float_round_nearest_even;
+            break;
+        case 1:
+            i = float_round_to_zero;
+            break;
+        case 2:
+            i = float_round_up;
+            break;
+        case 3:
+            i = float_round_down;
+            break;
+        default: /* 100 and 101 not implement */
+            cpu_abort(CPU(cpu), "Unsupported UniCore-F64 round mode");
+        }
+        set_float_rounding_mode(i, &env->ucf64.fp_status);
+    }
+
+    i = ucf64_exceptbits_to_host(UCF64_FPSCR_TRAPEN(val));
+    set_float_exception_flags(i, &env->ucf64.fp_status);
+}
+
+float32 HELPER(ucf64_adds)(float32 a, float32 b, CPUUniCore32State *env)
+{
+    return float32_add(a, b, &env->ucf64.fp_status);
+}
+
+float64 HELPER(ucf64_addd)(float64 a, float64 b, CPUUniCore32State *env)
+{
+    return float64_add(a, b, &env->ucf64.fp_status);
+}
+
+float32 HELPER(ucf64_subs)(float32 a, float32 b, CPUUniCore32State *env)
+{
+    return float32_sub(a, b, &env->ucf64.fp_status);
+}
+
+float64 HELPER(ucf64_subd)(float64 a, float64 b, CPUUniCore32State *env)
+{
+    return float64_sub(a, b, &env->ucf64.fp_status);
+}
+
+float32 HELPER(ucf64_muls)(float32 a, float32 b, CPUUniCore32State *env)
+{
+    return float32_mul(a, b, &env->ucf64.fp_status);
+}
+
+float64 HELPER(ucf64_muld)(float64 a, float64 b, CPUUniCore32State *env)
+{
+    return float64_mul(a, b, &env->ucf64.fp_status);
+}
+
+float32 HELPER(ucf64_divs)(float32 a, float32 b, CPUUniCore32State *env)
+{
+    return float32_div(a, b, &env->ucf64.fp_status);
+}
+
+float64 HELPER(ucf64_divd)(float64 a, float64 b, CPUUniCore32State *env)
+{
+    return float64_div(a, b, &env->ucf64.fp_status);
+}
+
+float32 HELPER(ucf64_negs)(float32 a)
+{
+    return float32_chs(a);
+}
+
+float64 HELPER(ucf64_negd)(float64 a)
+{
+    return float64_chs(a);
+}
+
+float32 HELPER(ucf64_abss)(float32 a)
+{
+    return float32_abs(a);
+}
+
+float64 HELPER(ucf64_absd)(float64 a)
+{
+    return float64_abs(a);
+}
+
+void HELPER(ucf64_cmps)(float32 a, float32 b, uint32_t c,
+        CPUUniCore32State *env)
+{
+    int flag;
+    flag = float32_compare_quiet(a, b, &env->ucf64.fp_status);
+    env->CF = 0;
+    switch (c & 0x7) {
+    case 0: /* F */
+        break;
+    case 1: /* UN */
+        if (flag == 2) {
+            env->CF = 1;
+        }
+        break;
+    case 2: /* EQ */
+        if (flag == 0) {
+            env->CF = 1;
+        }
+        break;
+    case 3: /* UEQ */
+        if ((flag == 0) || (flag == 2)) {
+            env->CF = 1;
+        }
+        break;
+    case 4: /* OLT */
+        if (flag == -1) {
+            env->CF = 1;
+        }
+        break;
+    case 5: /* ULT */
+        if ((flag == -1) || (flag == 2)) {
+            env->CF = 1;
+        }
+        break;
+    case 6: /* OLE */
+        if ((flag == -1) || (flag == 0)) {
+            env->CF = 1;
+        }
+        break;
+    case 7: /* ULE */
+        if (flag != 1) {
+            env->CF = 1;
+        }
+        break;
+    }
+    env->ucf64.xregs[UC32_UCF64_FPSCR] = (env->CF << 29)
+                    | (env->ucf64.xregs[UC32_UCF64_FPSCR] & 0x0fffffff);
+}
+
+void HELPER(ucf64_cmpd)(float64 a, float64 b, uint32_t c,
+        CPUUniCore32State *env)
+{
+    int flag;
+    flag = float64_compare_quiet(a, b, &env->ucf64.fp_status);
+    env->CF = 0;
+    switch (c & 0x7) {
+    case 0: /* F */
+        break;
+    case 1: /* UN */
+        if (flag == 2) {
+            env->CF = 1;
+        }
+        break;
+    case 2: /* EQ */
+        if (flag == 0) {
+            env->CF = 1;
+        }
+        break;
+    case 3: /* UEQ */
+        if ((flag == 0) || (flag == 2)) {
+            env->CF = 1;
+        }
+        break;
+    case 4: /* OLT */
+        if (flag == -1) {
+            env->CF = 1;
+        }
+        break;
+    case 5: /* ULT */
+        if ((flag == -1) || (flag == 2)) {
+            env->CF = 1;
+        }
+        break;
+    case 6: /* OLE */
+        if ((flag == -1) || (flag == 0)) {
+            env->CF = 1;
+        }
+        break;
+    case 7: /* ULE */
+        if (flag != 1) {
+            env->CF = 1;
+        }
+        break;
+    }
+    env->ucf64.xregs[UC32_UCF64_FPSCR] = (env->CF << 29)
+                    | (env->ucf64.xregs[UC32_UCF64_FPSCR] & 0x0fffffff);
+}
+
+/* Helper routines to perform bitwise copies between float and int.  */
+static inline float32 ucf64_itos(uint32_t i)
+{
+    union {
+        uint32_t i;
+        float32 s;
+    } v;
+
+    v.i = i;
+    return v.s;
+}
+
+static inline uint32_t ucf64_stoi(float32 s)
+{
+    union {
+        uint32_t i;
+        float32 s;
+    } v;
+
+    v.s = s;
+    return v.i;
+}
+
+/* Integer to float conversion.  */
+float32 HELPER(ucf64_si2sf)(float32 x, CPUUniCore32State *env)
+{
+    return int32_to_float32(ucf64_stoi(x), &env->ucf64.fp_status);
+}
+
+float64 HELPER(ucf64_si2df)(float32 x, CPUUniCore32State *env)
+{
+    return int32_to_float64(ucf64_stoi(x), &env->ucf64.fp_status);
+}
+
+/* Float to integer conversion.  */
+float32 HELPER(ucf64_sf2si)(float32 x, CPUUniCore32State *env)
+{
+    return ucf64_itos(float32_to_int32(x, &env->ucf64.fp_status));
+}
+
+float32 HELPER(ucf64_df2si)(float64 x, CPUUniCore32State *env)
+{
+    return ucf64_itos(float64_to_int32(x, &env->ucf64.fp_status));
+}
+
+/* floating point conversion */
+float64 HELPER(ucf64_sf2df)(float32 x, CPUUniCore32State *env)
+{
+    return float32_to_float64(x, &env->ucf64.fp_status);
+}
+
+float32 HELPER(ucf64_df2sf)(float64 x, CPUUniCore32State *env)
+{
+    return float64_to_float32(x, &env->ucf64.fp_status);
+}