/*
 * Copyright (C) 2019 Intel Corporation.  All rights reserved.
 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 */

#include "wasm_interp.h"
#include "bh_log.h"
#include "wasm_runtime.h"
#include "wasm_opcode.h"
#include "wasm_loader.h"
#include "../common/wasm_exec_env.h"

typedef int32 CellType_I32;
typedef int64 CellType_I64;
typedef float32 CellType_F32;
typedef float64 CellType_F64;

#define BR_TABLE_TMP_BUF_LEN 32

/* 64-bit Memory accessors. */
#if WASM_CPU_SUPPORTS_UNALIGNED_64BIT_ACCESS != 0
#define PUT_I64_TO_ADDR(addr, value) do {       \
    *(int64*)(addr) = (int64)(value);           \
  } while (0)
#define PUT_F64_TO_ADDR(addr, value) do {       \
    *(float64*)(addr) = (float64)(value);       \
  } while (0)

#define GET_I64_FROM_ADDR(addr) (*(int64*)(addr))
#define GET_F64_FROM_ADDR(addr) (*(float64*)(addr))

/* For STORE opcodes */
#define STORE_I64 PUT_I64_TO_ADDR
#define STORE_U32(addr, value) do {             \
    *(uint32*)(addr) = (uint32)(value);         \
  } while (0)
#define STORE_U16(addr, value) do {             \
    *(uint16*)(addr) = (uint16)(value);         \
  } while (0)

/* For LOAD opcodes */
#define LOAD_I64(addr) (*(int64*)(addr))
#define LOAD_F64(addr) (*(float64*)(addr))
#define LOAD_F32(addr) (*(float32*)(addr))
#define LOAD_I32(addr) (*(int32*)(addr))
#define LOAD_U32(addr) (*(uint32*)(addr))
#define LOAD_I16(addr) (*(int16*)(addr))
#define LOAD_U16(addr) (*(uint16*)(addr))

#else  /* WASM_CPU_SUPPORTS_UNALIGNED_64BIT_ACCESS != 0 */
#define PUT_I64_TO_ADDR(addr, value) do {       \
    union { int64 val; uint32 parts[2]; } u;    \
    u.val = (int64)(value);                     \
    (addr)[0] = u.parts[0];                     \
    (addr)[1] = u.parts[1];                     \
  } while (0)
#define PUT_F64_TO_ADDR(addr, value) do {       \
    union { float64 val; uint32 parts[2]; } u;  \
    u.val = (value);                            \
    (addr)[0] = u.parts[0];                     \
    (addr)[1] = u.parts[1];                     \
  } while (0)

static inline int64
GET_I64_FROM_ADDR(uint32 *addr)
{
    union { int64 val; uint32 parts[2]; } u;
    u.parts[0] = addr[0];
    u.parts[1] = addr[1];
    return u.val;
}

static inline float64
GET_F64_FROM_ADDR (uint32 *addr)
{
    union { float64 val; uint32 parts[2]; } u;
    u.parts[0] = addr[0];
    u.parts[1] = addr[1];
    return u.val;
}

/* For STORE opcodes */
#define STORE_I64(addr, value) do {             \
    uintptr_t addr1 = (uintptr_t)(addr);        \
    union { int64 val; uint32 u32[2];           \
            uint16 u16[4]; uint8 u8[8]; } u;    \
    if ((addr1 & (uintptr_t)7) == 0)            \
      *(int64*)(addr) = (int64)(value);         \
    else {                                      \
        u.val = (int64)(value);                 \
        if ((addr1 & (uintptr_t)3) == 0) {      \
            ((uint32*)(addr))[0] = u.u32[0];    \
            ((uint32*)(addr))[1] = u.u32[1];    \
        }                                       \
        else if ((addr1 & (uintptr_t)1) == 0) { \
            ((uint16*)(addr))[0] = u.u16[0];    \
            ((uint16*)(addr))[1] = u.u16[1];    \
            ((uint16*)(addr))[2] = u.u16[2];    \
            ((uint16*)(addr))[3] = u.u16[3];    \
        }                                       \
        else {                                  \
            int32 t;                            \
            for (t = 0; t < 8; t++)             \
                ((uint8*)(addr))[t] = u.u8[t];  \
        }                                       \
    }                                           \
  } while (0)

#define STORE_U32(addr, value) do {             \
    uintptr_t addr1 = (uintptr_t)(addr);        \
    union { uint32 val;                         \
            uint16 u16[2]; uint8 u8[4]; } u;    \
    if ((addr1 & (uintptr_t)3) == 0)            \
      *(uint32*)(addr) = (uint32)(value);       \
    else {                                      \
        u.val = (uint32)(value);                \
        if ((addr1 & (uintptr_t)1) == 0) {      \
            ((uint16*)(addr))[0] = u.u16[0];    \
            ((uint16*)(addr))[1] = u.u16[1];    \
        }                                       \
        else {                                  \
            ((uint8*)(addr))[0] = u.u8[0];      \
            ((uint8*)(addr))[1] = u.u8[1];      \
            ((uint8*)(addr))[2] = u.u8[2];      \
            ((uint8*)(addr))[3] = u.u8[3];      \
        }                                       \
    }                                           \
  } while (0)

#define STORE_U16(addr, value) do {             \
    union { uint16 val; uint8 u8[2]; } u;       \
    u.val = (uint16)(value);                    \
    ((uint8*)(addr))[0] = u.u8[0];              \
    ((uint8*)(addr))[1] = u.u8[1];              \
  } while (0)

/* For LOAD opcodes */
static inline int64
LOAD_I64(void *addr)
{
    uintptr_t addr1 = (uintptr_t)addr;
    union { int64 val; uint32 u32[2];
            uint16 u16[4]; uint8 u8[8]; } u;
    if ((addr1 & (uintptr_t)7) == 0)
        return *(int64*)addr;

    if ((addr1 & (uintptr_t)3) == 0) {
        u.u32[0] = ((uint32*)addr)[0];
        u.u32[1] = ((uint32*)addr)[1];
    }
    else if ((addr1 & (uintptr_t)1) == 0) {
        u.u16[0] = ((uint16*)addr)[0];
        u.u16[1] = ((uint16*)addr)[1];
        u.u16[2] = ((uint16*)addr)[2];
        u.u16[3] = ((uint16*)addr)[3];
    }
    else {
        int32 t;
        for (t = 0; t < 8; t++)
            u.u8[t] = ((uint8*)addr)[t];
    }
    return u.val;
}

static inline float64
LOAD_F64(void *addr)
{
    uintptr_t addr1 = (uintptr_t)addr;
    union { float64 val; uint32 u32[2];
            uint16 u16[4]; uint8 u8[8]; } u;
    if ((addr1 & (uintptr_t)7) == 0)
        return *(float64*)addr;

    if ((addr1 & (uintptr_t)3) == 0) {
        u.u32[0] = ((uint32*)addr)[0];
        u.u32[1] = ((uint32*)addr)[1];
    }
    else if ((addr1 & (uintptr_t)1) == 0) {
        u.u16[0] = ((uint16*)addr)[0];
        u.u16[1] = ((uint16*)addr)[1];
        u.u16[2] = ((uint16*)addr)[2];
        u.u16[3] = ((uint16*)addr)[3];
    }
    else {
        int32 t;
        for (t = 0; t < 8; t++)
            u.u8[t] = ((uint8*)addr)[t];
    }
    return u.val;
}

static inline int32
LOAD_I32(void *addr)
{
    uintptr_t addr1 = (uintptr_t)addr;
    union { int32 val; uint16 u16[2]; uint8 u8[4]; } u;
    if ((addr1 & (uintptr_t)3) == 0)
        return *(int32*)addr;

    if ((addr1 & (uintptr_t)1) == 0) {
        u.u16[0] = ((uint16*)addr)[0];
        u.u16[1] = ((uint16*)addr)[1];
    }
    else {
        u.u8[0] = ((uint8*)addr)[0];
        u.u8[1] = ((uint8*)addr)[1];
        u.u8[2] = ((uint8*)addr)[2];
        u.u8[3] = ((uint8*)addr)[3];
    }
    return u.val;
}

static inline int16
LOAD_I16(void *addr)
{
    union { int16 val; uint8 u8[2]; } u;
    u.u8[0] = ((uint8*)addr)[0];
    u.u8[1] = ((uint8*)addr)[1];
    return u.val;
}

#define LOAD_U32(addr) ((uint32)LOAD_I32(addr))
#define LOAD_U16(addr) ((uint16)LOAD_I16(addr))
#define LOAD_F32(addr) ((float32)LOAD_I32(addr))

#endif  /* WASM_CPU_SUPPORTS_UNALIGNED_64BIT_ACCESS != 0 */

#define CHECK_MEMORY_OVERFLOW(bytes) do {                                  \
    uint64 offset1 = offset + addr;                                             \
    /* if (flags != 2)                                                          \
      LOG_VERBOSE("unaligned load/store in wasm interp, flag: %d.\n", flags); */\
    /* The WASM spec doesn't require that the dynamic address operand must be   \
       unsigned, so we don't check whether integer overflow or not here. */     \
    /* if (offset1 < offset)                                                    \
      goto out_of_bounds; */                                                    \
    if (offset1 + bytes <= memory_data_size) {                                  \
      /* If offset1 is in valid range, maddr must also be in valid range,       \
         no need to check it again. */                                          \
      maddr = memory->memory_data + offset1;                                    \
    }                                                                           \
    else if (offset1 > DEFAULT_APP_HEAP_BASE_OFFSET                             \
             && (offset1 + bytes <=                                             \
                    DEFAULT_APP_HEAP_BASE_OFFSET + heap_data_size)) {           \
      /* If offset1 is in valid range, maddr must also be in valid range,       \
         no need to check it again. */                                          \
      maddr = memory->heap_data + offset1 - DEFAULT_APP_HEAP_BASE_OFFSET;       \
    }                                                                           \
    else                                                                        \
      goto out_of_bounds;                                                       \
  } while (0)

static inline uint32
rotl32(uint32 n, uint32 c)
{
    const uint32 mask = (31);
    c = c % 32;
    c &= mask;
    return (n<<c) | (n>>( (-c)&mask ));
}

static inline uint32
rotr32(uint32 n, uint32 c)
{
    const uint32 mask = (31);
    c = c % 32;
    c &= mask;
    return (n>>c) | (n<<( (-c)&mask ));
}

static inline uint64
rotl64(uint64 n, uint64 c)
{
    const uint64 mask = (63);
    c = c % 64;
    c &= mask;
    return (n<<c) | (n>>( (-c)&mask ));
}

static inline uint64
rotr64(uint64 n, uint64 c)
{
    const uint64 mask = (63);
    c = c % 64;
    c &= mask;
    return (n>>c) | (n<<( (-c)&mask ));
}

static inline double
wa_fmax(double a, double b)
{
    double c = fmax(a, b);
    if (c==0 && a==b)
        return signbit(a) ? b : a;
    return c;
}

static inline double
wa_fmin(double a, double b)
{
    double c = fmin(a, b);
    if (c==0 && a==b)
        return signbit(a) ? a : b;
    return c;
}

static inline uint32
clz32(uint32 type)
{
    uint32 num = 0;
    if (type == 0)
        return 32;
    while (!(type & 0x80000000)) {
        num++;
        type <<= 1;
    }
    return num;
}

static inline uint32
clz64(uint64 type)
{
    uint32 num = 0;
    if (type == 0)
        return 64;
    while (!(type & 0x8000000000000000LL)) {
        num++;
        type <<= 1;
    }
    return num;
}

static inline uint32
ctz32(uint32 type)
{
    uint32 num = 0;
    if (type == 0)
        return 32;
    while (!(type & 1)) {
        num++;
        type >>= 1;
    }
    return num;
}

static inline uint32
ctz64(uint64 type)
{
    uint32 num = 0;
    if (type == 0)
        return 64;
    while (!(type & 1)) {
        num++;
        type >>= 1;
    }
    return num;
}

static inline uint32
popcount32(uint32 u)
{
    uint32 ret = 0;
    while (u) {
        u = (u & (u - 1));
        ret++;
    }
    return ret;
}

static inline uint32
popcount64(uint64 u)
{
    uint32 ret = 0;
    while (u) {
        u = (u & (u - 1));
        ret++;
    }
    return ret;
}

static uint64
read_leb(const uint8 *buf, uint32 *p_offset, uint32 maxbits, bool sign)
{
    uint64 result = 0;
    uint32 shift = 0;
    uint32 bcnt = 0;
    uint64 byte;

    while (true) {
        byte = buf[*p_offset];
        *p_offset += 1;
        result |= ((byte & 0x7f) << shift);
        shift += 7;
        if ((byte & 0x80) == 0) {
            break;
        }
        bcnt += 1;
    }
    if (sign && (shift < maxbits) && (byte & 0x40)) {
        /* Sign extend */
        result |= - ((uint64)1 << shift);
    }
    return result;
}

#define read_leb_uint32(p, p_end, res) do {     \
  uint8 _val = *p;                              \
  if (!(_val & 0x80)) {                         \
    res = _val;                                 \
    p++;                                        \
    break;                                      \
  }                                             \
  uint32 _off = 0;                              \
  res = (uint32)read_leb(p, &_off, 32, false);  \
  p += _off;                                    \
} while (0)

#define GET_LOCAL_INDEX_TYPE_AND_OFFSET() do {                      \
    uint32 param_count = cur_func->param_count;                     \
    read_leb_uint32(frame_ip, frame_ip_end, local_idx);             \
    bh_assert(local_idx < param_count + cur_func->local_count);     \
    local_offset = cur_func->local_offsets[local_idx];              \
    if (local_idx < param_count)                                    \
      local_type = cur_func->param_types[local_idx];                \
    else                                                            \
      local_type = cur_func->local_types[local_idx - param_count];  \
  } while (0)

#define GET_OFFSET() (frame_ip += 2, *(int16 *)(frame_ip - 2))

#define SET_OPERAND(type, off, value)           \
    (*(type*)(frame_lp + *(int16*)(frame_ip + off))) = value

#define GET_OPERAND(type, off) (*(type*)(frame_lp + *(int16*)(frame_ip + off)))

#define PUSH_I32(value) do {                    \
    *(int32*)(frame_lp + GET_OFFSET()) = value;    \
  } while (0)

#define PUSH_F32(value) do {                    \
    *(float32*)(frame_lp + GET_OFFSET()) = value;  \
  } while (0)

#define PUSH_I64(value) do {                    \
    *(int64*)(frame_lp + GET_OFFSET()) = value;    \
  } while (0)

#define PUSH_F64(value) do {                    \
    *(float64*)(frame_lp + GET_OFFSET()) = value;  \
  } while (0)

#define POP_I32() (*(int32*)(frame_lp + GET_OFFSET()))

#define POP_F32() (*(float32*)(frame_lp + GET_OFFSET()))

#define POP_I64() (*(int64*)(frame_lp + GET_OFFSET()))

#define POP_F64() (*(float64*)(frame_lp + GET_OFFSET()))

#define SYNC_ALL_TO_FRAME() do {                \
    frame->ip = frame_ip;                       \
  } while (0)

#define UPDATE_ALL_FROM_FRAME() do {            \
    frame_ip = frame->ip;                       \
  } while (0)

#define RECOVER_CONTEXT(new_frame) do {                             \
    frame = (new_frame);                                            \
    cur_func = frame->function;                                     \
    prev_frame = frame->prev_frame;                                 \
    frame_ip = frame->ip;                                           \
    frame_lp = frame->lp;                                           \
  } while (0)

#if WASM_ENABLE_LABELS_AS_VALUES != 0
#define GET_OPCODE() opcode = *(frame_ip++);
#else
#define GET_OPCODE() (void)0
#endif

#define DEF_OP_EQZ(ctype, src_op_type) do {                         \
    SET_OPERAND(int32, 2, (GET_OPERAND(ctype, 0) == 0));            \
    frame_ip += 4;                                                  \
  } while (0)

#define DEF_OP_CMP(src_type, src_op_type, cond) do {                \
    SET_OPERAND(uint32, 4, GET_OPERAND(src_type, 2) cond            \
        GET_OPERAND(src_type, 0));                                  \
    frame_ip += 6;                                                  \
  } while (0)

#define DEF_OP_BIT_COUNT(src_type, src_op_type, operation) do {     \
    SET_OPERAND(src_type, 2,                                        \
        (src_type)operation(GET_OPERAND(src_type, 0)));             \
    frame_ip += 4;                                                  \
  } while (0)

#define DEF_OP_NUMERIC(src_type1, src_type2, src_op_type, operation) do {   \
    SET_OPERAND(src_type1, 4, (GET_OPERAND(src_type1, 2)                    \
        operation GET_OPERAND(src_type1, 0)));                              \
    frame_ip += 6;                                                          \
  } while (0)

#define DEF_OP_REINTERPRET(src_type) do {                                   \
    SET_OPERAND(src_type, 2, GET_OPERAND(src_type, 0));                     \
    frame_ip += 4;                                                          \
  } while (0)

#if WASM_CPU_SUPPORTS_UNALIGNED_64BIT_ACCESS != 0
#define DEF_OP_NUMERIC_64 DEF_OP_NUMERIC
#else
#define DEF_OP_NUMERIC_64(src_type1, src_type2, src_op_type, operation) do {          \
    src_type1 val1;                                                                   \
    src_type2 val2;                                                                   \
    val1 =                                                                            \
      (src_type1)GET_##src_op_type##_FROM_ADDR(frame_lp + (*(int16*)(frame_ip + 2))); \
    val2 =                                                                            \
      (src_type2)GET_##src_op_type##_FROM_ADDR(frame_lp + (*(int16*)(frame_ip)));     \
    val1 operation##= val2;                                                           \
    PUT_##src_op_type##_TO_ADDR(frame_lp + (*(int16*)(frame_ip + 4)), val1);          \
    frame_ip += 6;                                                                    \
  } while (0)
#endif

#define DEF_OP_NUMERIC2(src_type1, src_type2, src_op_type, operation) do {  \
    SET_OPERAND(src_type1, 4, (GET_OPERAND(src_type1, 2)                    \
        operation (GET_OPERAND(src_type1, 0) % 32)));                       \
    frame_ip += 6;                                                          \
  } while (0)

#define DEF_OP_NUMERIC2_64(src_type1, src_type2, src_op_type, operation) do { \
    SET_OPERAND(src_type1, 4, (GET_OPERAND(src_type1, 2)                      \
        operation (GET_OPERAND(src_type1, 0) % 64)));                         \
    frame_ip += 6;                                                            \
  } while (0)

#define DEF_OP_MATH(src_type, src_op_type, method) do {             \
    SET_OPERAND(src_type, 2, method(GET_OPERAND(src_type, 0)));     \
      frame_ip += 4;                                                \
  } while (0)

#define DEF_OP_TRUNC(dst_type, dst_op_type, src_type, src_op_type,  \
                     min_cond, max_cond) do {                       \
    src_type value = GET_OPERAND(src_type, 0);                      \
    if (isnan(value)) {                                             \
      wasm_set_exception(module, "invalid conversion to integer");  \
      goto got_exception;                                           \
    }                                                               \
    else if (value min_cond || value max_cond) {                    \
      wasm_set_exception(module, "integer overflow");               \
      goto got_exception;                                           \
    }                                                               \
    SET_OPERAND(dst_type, 2, value);                               \
    frame_ip += 4;                                                  \
  } while (0)

#define DEF_OP_CONVERT(dst_type, dst_op_type,                       \
                       src_type, src_op_type) do {                  \
    dst_type value = (dst_type)(src_type)POP_##src_op_type();       \
    PUSH_##dst_op_type(value);                                      \
  } while (0)

#define RECOVER_BR_INFO() do {                      \
    uint16 stack_index, ret_cell_num;               \
    stack_index = *(uint16*)frame_ip;               \
    frame_ip += sizeof(uint16);                     \
    ret_cell_num = *(uint8*)frame_ip;               \
    frame_ip += sizeof(uint8);                      \
    if (ret_cell_num == 1)                          \
        frame_lp[stack_index] =                     \
            frame_lp[*(int16*)frame_ip];            \
    else if (ret_cell_num == 2) {                   \
        *(int64*)(frame_lp + stack_index) =         \
            *(int64*)(frame_lp + *(int16*)frame_ip);\
    }                                               \
    frame_ip += sizeof(int16);                      \
    frame_ip = *(uint8**)frame_ip;                  \
  } while (0)

static inline int32
sign_ext_8_32(int8 val)
{
    if (val & 0x80)
        return (int32)val | (int32)0xffffff00;
    return val;
}

static inline int32
sign_ext_16_32(int16 val)
{
    if (val & 0x8000)
        return (int32)val | (int32)0xffff0000;
    return val;
}

static inline int64
sign_ext_8_64(int8 val)
{
    if (val & 0x80)
        return (int64)val | (int64)0xffffffffffffff00;
    return val;
}

static inline int64
sign_ext_16_64(int16 val)
{
    if (val & 0x8000)
        return (int64)val | (int64)0xffffffffffff0000;
    return val;
}

static inline int64
sign_ext_32_64(int32 val)
{
    if (val & (int32)0x80000000)
        return (int64)val | (int64)0xffffffff00000000;
    return val;
}

static inline void
word_copy(uint32 *dest, uint32 *src, unsigned num)
{
    for (; num > 0; num--)
        *dest++ = *src++;
}

static inline WASMInterpFrame*
ALLOC_FRAME(WASMExecEnv *exec_env, uint32 size, WASMInterpFrame *prev_frame)
{
    WASMInterpFrame *frame = wasm_exec_env_alloc_wasm_frame(exec_env, size);

    if (frame)
        frame->prev_frame = prev_frame;
    else {
        wasm_set_exception((WASMModuleInstance*)exec_env->module_inst,
                           "WASM interp failed: stack overflow.");
    }

    return frame;
}

static inline void
FREE_FRAME(WASMExecEnv *exec_env, WASMInterpFrame *frame)
{
    wasm_exec_env_free_wasm_frame(exec_env, frame);
}

static void
wasm_interp_call_func_native(WASMModuleInstance *module_inst,
                             WASMExecEnv *exec_env,
                             WASMFunctionInstance *cur_func,
                             WASMInterpFrame *prev_frame)
{
    unsigned local_cell_num = 2;
    WASMInterpFrame *frame;
    uint32 argv_ret[2];
    bool ret;

    if (!(frame = ALLOC_FRAME(exec_env,
                              wasm_interp_interp_frame_size(local_cell_num),
                              prev_frame)))
        return;

    frame->function = cur_func;
    frame->ip = NULL;
    frame->lp = frame->operand;

    wasm_exec_env_set_cur_frame(exec_env, frame);

    if (!cur_func->u.func_import->func_ptr_linked) {
        char buf[128];
        snprintf(buf,
                 sizeof(buf), "fail to call unlinked import function (%s, %s)",
                 cur_func->u.func_import->module_name,
                 cur_func->u.func_import->field_name);
        wasm_set_exception((WASMModuleInstance*)module_inst, buf);
        return;
    }

    ret = wasm_runtime_invoke_native(exec_env, cur_func->u.func_import->func_ptr_linked,
                                     cur_func->u.func_import->func_type,
                                     cur_func->u.func_import->signature,
                                     frame->lp, cur_func->param_cell_num, argv_ret);

    if (!ret)
        return;

    if (cur_func->ret_cell_num == 1) {
        prev_frame->lp[prev_frame->ret_offset] = argv_ret[0];
    }
    else if (cur_func->ret_cell_num == 2) {
        prev_frame->lp[prev_frame->ret_offset] = argv_ret[0];
        prev_frame->lp[prev_frame->ret_offset + 1] = argv_ret[1];
    }

    FREE_FRAME(exec_env, frame);
    wasm_exec_env_set_cur_frame(exec_env, prev_frame);
}

#if WASM_ENABLE_LABELS_AS_VALUES != 0

//#define HANDLE_OP(opcode) HANDLE_##opcode:printf(#opcode"\n");h_##opcode
#define HANDLE_OP(opcode) HANDLE_##opcode
#if WASM_ENABLE_FAST_INTERP == 0
#define FETCH_OPCODE_AND_DISPATCH() goto *handle_table[*frame_ip++]
#else
#if WASM_ENABLE_ABS_LABEL_ADDR != 0
#define FETCH_OPCODE_AND_DISPATCH() do {                    \
    const void *p_label_addr = *(void**)frame_ip;           \
    frame_ip += sizeof(void*);                              \
    goto *p_label_addr;                                     \
  } while (0)
#else
#define FETCH_OPCODE_AND_DISPATCH() do {                    \
    const void *p_label_addr = label_base                   \
                               + *(int16*)frame_ip;         \
    frame_ip += sizeof(int16);                              \
    goto *p_label_addr;                                     \
  } while (0)
#endif
#endif
#define HANDLE_OP_END() FETCH_OPCODE_AND_DISPATCH()

#else   /* else of WASM_ENABLE_LABELS_AS_VALUES */

#define HANDLE_OP(opcode) case opcode
#define HANDLE_OP_END() continue

#endif  /* end of WASM_ENABLE_LABELS_AS_VALUES */

#if WASM_ENABLE_FAST_INTERP != 0
static void *global_handle_table[WASM_INSTRUCTION_NUM] = { 0 };
#endif

static void
wasm_interp_call_func_bytecode(WASMModuleInstance *module,
                               WASMExecEnv *exec_env,
                               WASMFunctionInstance *cur_func,
                               WASMInterpFrame *prev_frame)
{
  WASMMemoryInstance *memory = module->default_memory;
  uint32 num_bytes_per_page = memory ? memory->num_bytes_per_page : 0;
  uint32 memory_data_size = memory ? num_bytes_per_page * memory->cur_page_count : 0;
  uint32 heap_data_size = memory ? (uint32)(memory->heap_data_end - memory->heap_data) : 0;
  uint8 *global_data = memory ? memory->global_data : NULL;
  WASMTableInstance *table = module->default_table;
  WASMGlobalInstance *globals = module->globals;
  uint8 opcode_IMPDEP = WASM_OP_IMPDEP;
  WASMInterpFrame *frame = NULL;
  /* Points to this special opcode so as to jump to the call_method_from_entry.  */
  register uint8  *frame_ip = &opcode_IMPDEP; /* cache of frame->ip */
  register uint32 *frame_lp = NULL;  /* cache of frame->lp */
#if WASM_ENABLE_ABS_LABEL_ADDR == 0
  register uint8 *label_base = &&HANDLE_WASM_OP_UNREACHABLE;  /* cache of label base addr */
#endif
  WASMGlobalInstance *global;
  uint8 *frame_ip_end;
  uint32 cond, count, fidx, tidx, frame_size = 0;
  uint64 all_cell_num = 0;
  int16 addr1, addr2, addr_ret = 0;
  int32 didx, val;
  uint8 *maddr = NULL;
  uint32 local_idx, local_offset, global_idx;
  uint8 local_type, *global_addr;

#if WASM_ENABLE_LABELS_AS_VALUES != 0
  #define HANDLE_OPCODE(op) &&HANDLE_##op
  DEFINE_GOTO_TABLE (handle_table);
  #undef HANDLE_OPCODE
#if WASM_ENABLE_FAST_INTERP != 0
  if (exec_env == NULL) {
      bh_memcpy_s(global_handle_table, sizeof(void*) * WASM_INSTRUCTION_NUM,
                  handle_table, sizeof(void*) * WASM_INSTRUCTION_NUM);
      return;
  }
#endif
#endif

#if WASM_ENABLE_LABELS_AS_VALUES == 0
  while (frame_ip < frame_ip_end) {
    opcode = *frame_ip++;
    switch (opcode) {
#else
      goto *handle_table[WASM_OP_IMPDEP];
#endif
      /* control instructions */
      HANDLE_OP (WASM_OP_UNREACHABLE):
        wasm_set_exception(module, "unreachable");
        goto got_exception;

      HANDLE_OP (WASM_OP_IF):
        cond = (uint32)POP_I32();

        if (cond == 0) {
          if (*(uint8**)frame_ip == NULL) {
            frame_ip = *(uint8**)(frame_ip + sizeof(uint8*));
          }
          else {
            frame_ip = *(uint8**)(frame_ip);
          }
        }
        else {
            frame_ip += sizeof(uint8*) * 2;
        }
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_ELSE):
        frame_ip = *(uint8**)(frame_ip);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_BR):
        RECOVER_BR_INFO();
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_BR_IF):
        cond = frame_lp[GET_OFFSET()];

        if (cond)
          RECOVER_BR_INFO();
        else {
          frame_ip += (2 + 1 + 2 + sizeof(uint8*));
        }

        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_BR_TABLE):
        count = GET_OPERAND(uint32, 0);
        didx = GET_OPERAND(uint32, 2);
        frame_ip += 4;

        if (!(didx >= 0 && (uint32)didx < count))
            didx = count;

        frame_ip += (didx * ((2 + 1 + 2 + sizeof(uint8*))));
        RECOVER_BR_INFO();
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_RETURN):
        if (cur_func->ret_cell_num == 2) {
            *((uint64 *)(prev_frame->lp + prev_frame->ret_offset)) =
                GET_OPERAND(uint64, 0);
        } else if (cur_func->ret_cell_num == 1) {
            prev_frame->lp[prev_frame->ret_offset] = GET_OPERAND(int32, 0);;
        }
        goto return_func;

      HANDLE_OP (WASM_OP_CALL_INDIRECT):
        {
          WASMType *cur_type, *cur_func_type;

          tidx = GET_OPERAND(int32, 0);
          val = GET_OPERAND(int32, 2);
          frame_ip += 4;

          if (tidx >= module->module->type_count) {
            wasm_set_exception(module, "type index is overflow");
            goto got_exception;
          }
          cur_type = module->module->types[tidx];

          if (val < 0 || val >= (int32)table->cur_size) {
            wasm_set_exception(module, "undefined element");
            goto got_exception;
          }

          fidx = ((uint32*)table->base_addr)[val];
          if (fidx == (uint32)-1) {
            wasm_set_exception(module, "uninitialized element");
            goto got_exception;
          }

          cur_func = module->functions + fidx;

          if (cur_func->is_import_func)
            cur_func_type = cur_func->u.func_import->func_type;
          else
            cur_func_type = cur_func->u.func->func_type;
          if (!wasm_type_equal(cur_type, cur_func_type)) {
            wasm_set_exception(module, "indirect call type mismatch");
            goto got_exception;
          }
          goto call_func_from_interp;
        }

      /* parametric instructions */
      HANDLE_OP (WASM_OP_SELECT):
        {
          cond = frame_lp[GET_OFFSET()];
          addr1 = GET_OFFSET();
          addr2 = GET_OFFSET();
          addr_ret = GET_OFFSET();

          if (!cond)
            frame_lp[addr_ret] = frame_lp[addr1];
          else
            frame_lp[addr_ret] = frame_lp[addr2];
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_SELECT_64):
        {
          cond = frame_lp[GET_OFFSET()];
          addr1 = GET_OFFSET();
          addr2 = GET_OFFSET();
          addr_ret = GET_OFFSET();

          if (!cond)
            *(int64*)(frame_lp + addr_ret) = *(int64*)(frame_lp + addr1);
          else
            *(int64*)(frame_lp + addr_ret) = *(int64*)(frame_lp + addr2);
          HANDLE_OP_END ();
        }

      /* variable instructions */
      HANDLE_OP (EXT_OP_SET_LOCAL_FAST):
      HANDLE_OP (EXT_OP_TEE_LOCAL_FAST):
        {
          local_offset = *frame_ip++;
          *(int32*)(frame_lp + local_offset) = GET_OPERAND(uint32, 0);
          frame_ip += 2;
          HANDLE_OP_END ();
        }

      HANDLE_OP (EXT_OP_SET_LOCAL_FAST_I64):
      HANDLE_OP (EXT_OP_TEE_LOCAL_FAST_I64):
        {
          local_offset = *frame_ip++;
          PUT_I64_TO_ADDR((uint32*)(frame_lp + local_offset), GET_OPERAND(uint64, 0));
          frame_ip += 2;
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_GET_GLOBAL):
        {
          global_idx = frame_lp[GET_OFFSET()];
          addr_ret = GET_OFFSET();

          bh_assert(global_idx < module->global_count);
          global = globals + global_idx;
          global_addr = global_data + global->data_offset;

          switch (global->type) {
            case VALUE_TYPE_I32:
            case VALUE_TYPE_F32:
              frame_lp[addr_ret] = *(uint32*)global_addr;
              break;
            case VALUE_TYPE_I64:
            case VALUE_TYPE_F64:
              *(uint64 *)(frame_lp + addr_ret) = GET_I64_FROM_ADDR((uint32*)global_addr);
              break;
            default:
              wasm_set_exception(module, "invalid global type");
              goto got_exception;
          }

          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_SET_GLOBAL):
        {
          global_idx = frame_lp[GET_OFFSET()];
          addr1 = GET_OFFSET();

          bh_assert(global_idx < module->global_count);
          global = globals + global_idx;
          global_addr = global_data + global->data_offset;

          switch (global->type) {
            case VALUE_TYPE_I32:
            case VALUE_TYPE_F32:
              *(int32*)global_addr = frame_lp[addr1];
              break;
            case VALUE_TYPE_I64:
            case VALUE_TYPE_F64:
              PUT_I64_TO_ADDR((uint32*)global_addr, *(int64 *)(frame_lp + addr1));
              break;
            default:
              wasm_set_exception(module, "invalid global type");
              goto got_exception;
          }

          HANDLE_OP_END ();
        }

      /* memory load instructions */
      HANDLE_OP (WASM_OP_I32_LOAD):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(4);
          frame_lp[addr_ret] = LOAD_I32(maddr);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_LOAD):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(8);
          PUT_I64_TO_ADDR(frame_lp + addr_ret, LOAD_I64(maddr));
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I32_LOAD8_S):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(1);
          frame_lp[addr_ret] = sign_ext_8_32(*(int8*)maddr);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I32_LOAD8_U):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(1);
          frame_lp[addr_ret] = (uint32)(*(uint8*)maddr);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I32_LOAD16_S):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(2);
          frame_lp[addr_ret] = sign_ext_16_32(LOAD_I16(maddr));
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I32_LOAD16_U):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(2);
          frame_lp[addr_ret] = (uint32)(LOAD_U16(maddr));
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_LOAD8_S):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(1);
          *(int64 *)(frame_lp + addr_ret) = sign_ext_8_64(*(int8*)maddr);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_LOAD8_U):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(1);
          *(int64 *)(frame_lp + addr_ret) = (uint64)(*(uint8*)maddr);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_LOAD16_S):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(2);
          *(int64 *)(frame_lp + addr_ret) = sign_ext_16_64(LOAD_I16(maddr));
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_LOAD16_U):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(2);
          *(int64 *)(frame_lp + addr_ret) = (uint64)(LOAD_U16(maddr));
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_LOAD32_S):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(4);
          *(int64 *)(frame_lp + addr_ret) = sign_ext_32_64(LOAD_I32(maddr));
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_LOAD32_U):
        {
          uint32 offset, addr;
          offset = GET_OPERAND(uint32, 0);
          addr = GET_OPERAND(uint32, 2);
          frame_ip += 4;
          addr_ret = GET_OFFSET();
          CHECK_MEMORY_OVERFLOW(4);
          *(int64 *)(frame_lp + addr_ret) = (uint64)(LOAD_U32(maddr));
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I32_STORE):
        {
          uint32 offset, addr;
          uint32 sval;
          offset = GET_OPERAND(uint32, 0);
          sval = GET_OPERAND(uint32, 2);
          addr = GET_OPERAND(uint32, 4);
          frame_ip += 6;
          CHECK_MEMORY_OVERFLOW(4);
          STORE_U32(maddr, sval);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I32_STORE8):
        {
          uint32 offset, addr;
          uint32 sval;
          offset = GET_OPERAND(uint32, 0);
          sval = GET_OPERAND(uint32, 2);
          addr = GET_OPERAND(uint32, 4);
          frame_ip += 6;
          CHECK_MEMORY_OVERFLOW(1);
          *(uint8*)maddr = (uint8)sval;
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I32_STORE16):
        {
          uint32 offset, addr;
          uint32 sval;
          offset = GET_OPERAND(uint32, 0);
          sval = GET_OPERAND(uint32, 2);
          addr = GET_OPERAND(uint32, 4);
          frame_ip += 6;
          CHECK_MEMORY_OVERFLOW(2);
          STORE_U16(maddr, (uint16)sval);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_STORE):
        {
          uint32 offset, addr;
          uint64 sval;
          offset = GET_OPERAND(uint32, 0);
          sval = GET_OPERAND(uint64, 2);
          addr = GET_OPERAND(uint32, 4);
          frame_ip += 6;
          CHECK_MEMORY_OVERFLOW(8);
          STORE_I64(maddr, sval);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_STORE8):
        {
          uint32 offset, addr;
          uint64 sval;
          offset = GET_OPERAND(uint32, 0);
          sval = GET_OPERAND(uint64, 2);
          addr = GET_OPERAND(uint32, 4);
          frame_ip += 6;
          CHECK_MEMORY_OVERFLOW(1);
          *(uint8*)maddr = (uint8)sval;
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_STORE16):
        {
          uint32 offset, addr;
          uint64 sval;
          offset = GET_OPERAND(uint32, 0);
          sval = GET_OPERAND(uint64, 2);
          addr = GET_OPERAND(uint32, 4);
          frame_ip += 6;
          CHECK_MEMORY_OVERFLOW(2);
          STORE_U16(maddr, (uint16)sval);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I64_STORE32):
        {
          uint32 offset, addr;
          uint64 sval;
          offset = GET_OPERAND(uint32, 0);
          sval = GET_OPERAND(uint64, 2);
          addr = GET_OPERAND(uint32, 4);
          frame_ip += 6;
          CHECK_MEMORY_OVERFLOW(4);
          STORE_U32(maddr, (uint32)sval);
          HANDLE_OP_END ();
        }

      /* memory size and memory grow instructions */
      HANDLE_OP (WASM_OP_MEMORY_SIZE):
      {
        uint32 reserved;
        addr_ret = GET_OFFSET();
        frame_lp[addr_ret] = memory->cur_page_count;
        (void)reserved;
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_MEMORY_GROW):
      {
        uint32 reserved, delta, prev_page_count = memory->cur_page_count;

        addr1 = GET_OFFSET();
        addr_ret = GET_OFFSET();
        delta = (uint32)frame_lp[addr1];

        if (!wasm_enlarge_memory(module, delta)) {
          /* fail to memory.grow, return -1 */
          frame_lp[addr_ret] = -1;
          if (wasm_get_exception(module)) {
            bh_printf("%s\n", wasm_get_exception(module));
            wasm_set_exception(module, NULL);
          }
        }
        else {
          /* success, return previous page count */
          frame_lp[addr_ret] = prev_page_count;
          /* update the memory instance ptr */
          memory = module->default_memory;
          memory_data_size = num_bytes_per_page * memory->cur_page_count;
          global_data = memory->global_data;
        }

        (void)reserved;
        HANDLE_OP_END ();
      }

      /* comparison instructions of i32 */
      HANDLE_OP (WASM_OP_I32_EQZ):
        DEF_OP_EQZ(int32, I32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_EQ):
        DEF_OP_CMP(uint32, I32, ==);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_NE):
        DEF_OP_CMP(uint32, I32, !=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_LT_S):
        DEF_OP_CMP(int32, I32, <);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_LT_U):
        DEF_OP_CMP(uint32, I32, <);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_GT_S):
        DEF_OP_CMP(int32, I32, >);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_GT_U):
        DEF_OP_CMP(uint32, I32, >);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_LE_S):
        DEF_OP_CMP(int32, I32, <=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_LE_U):
        DEF_OP_CMP(uint32, I32, <=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_GE_S):
        DEF_OP_CMP(int32, I32, >=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_GE_U):
        DEF_OP_CMP(uint32, I32, >=);
        HANDLE_OP_END ();

      /* comparison instructions of i64 */
      HANDLE_OP (WASM_OP_I64_EQZ):
        DEF_OP_EQZ(int64, I64);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_EQ):
        DEF_OP_CMP(uint64, I64, ==);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_NE):
        DEF_OP_CMP(uint64, I64, !=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_LT_S):
        DEF_OP_CMP(int64, I64, <);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_LT_U):
        DEF_OP_CMP(uint64, I64, <);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_GT_S):
        DEF_OP_CMP(int64, I64, >);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_GT_U):
        DEF_OP_CMP(uint64, I64, >);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_LE_S):
        DEF_OP_CMP(int64, I64, <=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_LE_U):
        DEF_OP_CMP(uint64, I64, <=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_GE_S):
        DEF_OP_CMP(int64, I64, >=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_GE_U):
        DEF_OP_CMP(uint64, I64, >=);
        HANDLE_OP_END ();

      /* comparison instructions of f32 */
      HANDLE_OP (WASM_OP_F32_EQ):
        DEF_OP_CMP(float32, F32, ==);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_NE):
        DEF_OP_CMP(float32, F32, !=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_LT):
        DEF_OP_CMP(float32, F32, <);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_GT):
        DEF_OP_CMP(float32, F32, >);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_LE):
        DEF_OP_CMP(float32, F32, <=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_GE):
        DEF_OP_CMP(float32, F32, >=);
        HANDLE_OP_END ();

      /* comparison instructions of f64 */
      HANDLE_OP (WASM_OP_F64_EQ):
        DEF_OP_CMP(float64, F64, ==);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_NE):
        DEF_OP_CMP(float64, F64, !=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_LT):
        DEF_OP_CMP(float64, F64, <);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_GT):
        DEF_OP_CMP(float64, F64, >);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_LE):
        DEF_OP_CMP(float64, F64, <=);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_GE):
        DEF_OP_CMP(float64, F64, >=);
        HANDLE_OP_END ();

      /* numberic instructions of i32 */
      HANDLE_OP (WASM_OP_I32_CLZ):
        DEF_OP_BIT_COUNT(uint32, I32, clz32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_CTZ):
        DEF_OP_BIT_COUNT(uint32, I32, ctz32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_POPCNT):
        DEF_OP_BIT_COUNT(uint32, I32, popcount32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_ADD):
        DEF_OP_NUMERIC(uint32, uint32, I32, +);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_SUB):
        DEF_OP_NUMERIC(uint32, uint32, I32, -);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_MUL):
        DEF_OP_NUMERIC(uint32, uint32, I32, *);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_DIV_S):
      {
        int32 a, b;

        b = frame_lp[GET_OFFSET()];
        a = frame_lp[GET_OFFSET()];
        addr_ret = GET_OFFSET();
        if (a == (int32)0x80000000 && b == -1) {
          wasm_set_exception(module, "integer overflow");
          goto got_exception;
        }
        if (b == 0) {
          wasm_set_exception(module, "integer divide by zero");
          goto got_exception;
        }
        frame_lp[addr_ret] = (a / b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I32_DIV_U):
      {
        uint32 a, b;

        addr1 = GET_OFFSET();
        addr2 = GET_OFFSET();
        addr_ret = GET_OFFSET();

        b = (uint32)frame_lp[addr1];
        a = (uint32)frame_lp[addr2];
        if (b == 0) {
          wasm_set_exception(module, "integer divide by zero");
          goto got_exception;
        }
        frame_lp[addr_ret] = (a / b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I32_REM_S):
      {
        int32 a, b;

        addr1 = GET_OFFSET();
        addr2 = GET_OFFSET();
        addr_ret = GET_OFFSET();

        b = frame_lp[addr1];
        a = frame_lp[addr2];
        if (a == (int32)0x80000000 && b == -1) {
          frame_lp[addr_ret] = 0;
          HANDLE_OP_END ();
        }
        if (b == 0) {
          wasm_set_exception(module, "integer divide by zero");
          goto got_exception;
        }
        frame_lp[addr_ret] = (a % b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I32_REM_U):
      {
        uint32 a, b;

        addr1 = GET_OFFSET();
        addr2 = GET_OFFSET();
        addr_ret = GET_OFFSET();

        b = (uint32)frame_lp[addr1];
        a = (uint32)frame_lp[addr2];
        if (b == 0) {
          wasm_set_exception(module, "integer divide by zero");
          goto got_exception;
        }
        frame_lp[addr_ret] = (a % b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I32_AND):
        DEF_OP_NUMERIC(uint32, uint32, I32, &);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_OR):
        DEF_OP_NUMERIC(uint32, uint32, I32, |);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_XOR):
        DEF_OP_NUMERIC(uint32, uint32, I32, ^);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_SHL):
      {
#if defined(BUILD_TARGET_X86_64) || defined(BUILD_TARGET_X86_32)
        DEF_OP_NUMERIC(uint32, uint32, I32, <<);
#else
        DEF_OP_NUMERIC2(uint32, uint32, I32, <<);
#endif
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I32_SHR_S):
      {
#if defined(BUILD_TARGET_X86_64) || defined(BUILD_TARGET_X86_32)
        DEF_OP_NUMERIC(int32, uint32, I32, >>);
#else
        DEF_OP_NUMERIC2(int32, uint32, I32, >>);
#endif
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I32_SHR_U):
      {
#if defined(BUILD_TARGET_X86_64) || defined(BUILD_TARGET_X86_32)
        DEF_OP_NUMERIC(uint32, uint32, I32, >>);
#else
        DEF_OP_NUMERIC2(uint32, uint32, I32, >>);
#endif
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I32_ROTL):
      {
        uint32 a, b;

        b = (uint32)frame_lp[GET_OFFSET()];
        a = (uint32)frame_lp[GET_OFFSET()];
        frame_lp[GET_OFFSET()] = rotl32(a, b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I32_ROTR):
      {
        uint32 a, b;

        b = (uint32)frame_lp[GET_OFFSET()];
        a = (uint32)frame_lp[GET_OFFSET()];
        frame_lp[GET_OFFSET()] = rotr32(a, b);
        HANDLE_OP_END ();
      }

      /* numberic instructions of i64 */
      HANDLE_OP (WASM_OP_I64_CLZ):
        DEF_OP_BIT_COUNT(uint64, I64, clz64);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_CTZ):
        DEF_OP_BIT_COUNT(uint64, I64, ctz64);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_POPCNT):
        DEF_OP_BIT_COUNT(uint64, I64, popcount64);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_ADD):
        DEF_OP_NUMERIC_64(uint64, uint64, I64, +);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_SUB):
        DEF_OP_NUMERIC_64(uint64, uint64, I64, -);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_MUL):
        DEF_OP_NUMERIC_64(uint64, uint64, I64, *);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_DIV_S):
      {
        int64 a, b;

        b = *(int64*)(frame_lp + GET_OFFSET());
        a = *(int64*)(frame_lp + GET_OFFSET());
        if (a == (int64)0x8000000000000000LL && b == -1) {
          wasm_set_exception(module, "integer overflow");
          goto got_exception;
        }
        if (b == 0) {
          wasm_set_exception(module, "integer divide by zero");
          goto got_exception;
        }
        *(int64*)(frame_lp + GET_OFFSET()) = (a / b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I64_DIV_U):
      {
        uint64 a, b;

        b = *(uint64*)(frame_lp + GET_OFFSET());
        a = *(uint64*)(frame_lp + GET_OFFSET());
        if (b == 0) {
          wasm_set_exception(module, "integer divide by zero");
          goto got_exception;
        }
        *(uint64*)(frame_lp + GET_OFFSET()) = (a / b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I64_REM_S):
      {
        int64 a, b;

        b = *(int64*)(frame_lp + GET_OFFSET());
        a = *(int64*)(frame_lp + GET_OFFSET());
        if (a == (int64)0x8000000000000000LL && b == -1) {
          *(int64*)(frame_lp + GET_OFFSET()) = 0;
          HANDLE_OP_END ();
        }
        if (b == 0) {
          wasm_set_exception(module, "integer divide by zero");
          goto got_exception;
        }
        *(int64*)(frame_lp + GET_OFFSET()) = (a % b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I64_REM_U):
      {
        uint64 a, b;

        b = *(uint64*)(frame_lp + GET_OFFSET());
        a = *(uint64*)(frame_lp + GET_OFFSET());
        if (b == 0) {
          wasm_set_exception(module, "integer divide by zero");
          goto got_exception;
        }
        *(uint64*)(frame_lp + GET_OFFSET()) = (a % b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I64_AND):
        DEF_OP_NUMERIC_64(uint64, uint64, I64, &);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_OR):
        DEF_OP_NUMERIC_64(uint64, uint64, I64, |);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_XOR):
        DEF_OP_NUMERIC_64(uint64, uint64, I64, ^);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_SHL):
      {
#if defined(BUILD_TARGET_X86_64) || defined(BUILD_TARGET_X86_32)
        DEF_OP_NUMERIC_64(uint64, uint64, I64, <<);
#else
        DEF_OP_NUMERIC2_64(uint64, uint64, I64, <<);
#endif
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I64_SHR_S):
      {
#if defined(BUILD_TARGET_X86_64) || defined(BUILD_TARGET_X86_32)
        DEF_OP_NUMERIC_64(int64, uint64, I64, >>);
#else
        DEF_OP_NUMERIC2_64(int64, uint64, I64, >>);
#endif
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I64_SHR_U):
      {
#if defined(BUILD_TARGET_X86_64) || defined(BUILD_TARGET_X86_32)
        DEF_OP_NUMERIC_64(uint64, uint64, I64, >>);
#else
        DEF_OP_NUMERIC2_64(uint64, uint64, I64, >>);
#endif
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I64_ROTL):
      {
        uint64 a, b;

        b = *(int64*)(frame_lp + GET_OFFSET());
        a = *(int64*)(frame_lp + GET_OFFSET());
        *(int64*)(frame_lp + GET_OFFSET()) = rotl64(a, b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_I64_ROTR):
      {
        uint64 a, b;

        b = *(uint64*)(frame_lp + GET_OFFSET());
        a = *(uint64*)(frame_lp + GET_OFFSET());
        *(uint64*)(frame_lp + GET_OFFSET()) = rotr64(a, b);
        HANDLE_OP_END ();
      }

      /* numberic instructions of f32 */
      HANDLE_OP (WASM_OP_F32_ABS):
        DEF_OP_MATH(float32, F32, fabs);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_NEG):
      {
          int32 i32 = (int32)frame_lp[GET_OFFSET()];
          addr_ret = GET_OFFSET();
          int32 sign_bit = i32 & (1 << 31);
          if (sign_bit)
              frame_lp[addr_ret] = i32 & ~(1 << 31);
          else
              frame_lp[addr_ret] = (uint32)(i32 | (1 << 31));
          HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_F32_CEIL):
        DEF_OP_MATH(float32, F32, ceil);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_FLOOR):
        DEF_OP_MATH(float32, F32, floor);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_TRUNC):
        DEF_OP_MATH(float32, F32, trunc);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_NEAREST):
        DEF_OP_MATH(float32, F32, rint);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_SQRT):
        DEF_OP_MATH(float32, F32, sqrt);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_ADD):
        DEF_OP_NUMERIC(float32, float32, F32, +);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_SUB):
        DEF_OP_NUMERIC(float32, float32, F32, -);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_MUL):
        DEF_OP_NUMERIC(float32, float32, F32, *);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_DIV):
        DEF_OP_NUMERIC(float32, float32, F32, /);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_MIN):
      {
        float32 a, b;

        b = *(float32*)(frame_lp + GET_OFFSET());
        a = *(float32*)(frame_lp + GET_OFFSET());

        if (isnan(a))
            *(float32*)(frame_lp + GET_OFFSET()) = a;
        else if (isnan(b))
            *(float32*)(frame_lp + GET_OFFSET()) = b;
        else
            *(float32*)(frame_lp + GET_OFFSET()) = wa_fmin(a, b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_F32_MAX):
      {
        float32 a, b;

        b = *(float32*)(frame_lp + GET_OFFSET());
        a = *(float32*)(frame_lp + GET_OFFSET());

        if (isnan(a))
            *(float32*)(frame_lp + GET_OFFSET()) = a;
        else if (isnan(b))
            *(float32*)(frame_lp + GET_OFFSET()) = b;
        else
            *(float32*)(frame_lp + GET_OFFSET()) = wa_fmax(a, b);
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_F32_COPYSIGN):
      {
        float32 a, b;

        b = *(float32*)(frame_lp + GET_OFFSET());
        a = *(float32*)(frame_lp + GET_OFFSET());
        *(float32*)(frame_lp + GET_OFFSET()) = (signbit(b) ? -fabs(a) : fabs(a));
        HANDLE_OP_END ();
      }

      /* numberic instructions of f64 */
      HANDLE_OP (WASM_OP_F64_ABS):
        DEF_OP_MATH(float64, F64, fabs);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_NEG):
      {
          int64 i64 = *(int64*)(frame_lp + GET_OFFSET());
          int64 sign_bit = i64 & (((int64)1) << 63);
          if (sign_bit)
              *(int64*)(frame_lp + GET_OFFSET()) = (uint64)i64 & ~(((uint64)1) << 63);
          else
              *(int64*)(frame_lp + GET_OFFSET()) = (uint64)i64 | (((uint64)1) << 63);
          HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_F64_CEIL):
        DEF_OP_MATH(float64, F64, ceil);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_FLOOR):
        DEF_OP_MATH(float64, F64, floor);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_TRUNC):
        DEF_OP_MATH(float64, F64, trunc);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_NEAREST):
        DEF_OP_MATH(float64, F64, rint);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_SQRT):
        DEF_OP_MATH(float64, F64, sqrt);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_ADD):
        DEF_OP_NUMERIC_64(float64, float64, F64, +);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_SUB):
        DEF_OP_NUMERIC_64(float64, float64, F64, -);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_MUL):
        DEF_OP_NUMERIC_64(float64, float64, F64, *);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_DIV):
        DEF_OP_NUMERIC_64(float64, float64, F64, /);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_MIN):
      {
        float64 a, b;

        b = POP_F64();
        a = POP_F64();

        if (isnan(a))
            PUSH_F64(a);
        else if (isnan(b))
            PUSH_F64(b);
        else
            PUSH_F64(wa_fmin(a, b));
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_F64_MAX):
      {
        float64 a, b;

        b = POP_F64();
        a = POP_F64();

        if (isnan(a))
            PUSH_F64(a);
        else if (isnan(b))
            PUSH_F64(b);
        else
            PUSH_F64(wa_fmax(a, b));
        HANDLE_OP_END ();
      }

      HANDLE_OP (WASM_OP_F64_COPYSIGN):
      {
        float64 a, b;

        b = POP_F64();
        a = POP_F64();
        PUSH_F64(signbit(b) ? -fabs(a) : fabs(a));
        HANDLE_OP_END ();
      }

      /* conversions of i32 */
      HANDLE_OP (WASM_OP_I32_WRAP_I64):
        {
          int32 value = (int32)(POP_I64() & 0xFFFFFFFFLL);
          PUSH_I32(value);
          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_I32_TRUNC_S_F32):
        /* We don't use INT32_MIN/INT32_MAX/UINT32_MIN/UINT32_MAX,
           since float/double values of ieee754 cannot precisely represent
           all int32/uint32/int64/uint64 values, e.g.:
           UINT32_MAX is 4294967295, but (float32)4294967295 is 4294967296.0f,
           but not 4294967295.0f. */
        DEF_OP_TRUNC(int32, I32, float32, F32, <= -2147483904.0f,
                                               >= 2147483648.0f);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_TRUNC_U_F32):
        DEF_OP_TRUNC(uint32, I32, float32, F32, <= -1.0f,
                                                >= 4294967296.0f);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_TRUNC_S_F64):
        DEF_OP_TRUNC(int32, I32, float64, F64, <= -2147483649.0,
                                               >= 2147483648.0);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I32_TRUNC_U_F64):
        DEF_OP_TRUNC(uint32, I32, float64, F64, <= -1.0 ,
                                                >= 4294967296.0);
        HANDLE_OP_END ();

      /* conversions of i64 */
      HANDLE_OP (WASM_OP_I64_EXTEND_S_I32):
        DEF_OP_CONVERT(int64, I64, int32, I32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_EXTEND_U_I32):
        DEF_OP_CONVERT(int64, I64, uint32, I32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_TRUNC_S_F32):
        DEF_OP_TRUNC(int64, I64, float32, F32, <= -9223373136366403584.0f,
                                               >= 9223372036854775808.0f);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_TRUNC_U_F32):
        DEF_OP_TRUNC(uint64, I64, float32, F32, <= -1.0f,
                                                >= 18446744073709551616.0f);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_TRUNC_S_F64):
        DEF_OP_TRUNC(int64, I64, float64, F64, <= -9223372036854777856.0,
                                               >= 9223372036854775808.0);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_I64_TRUNC_U_F64):
        DEF_OP_TRUNC(uint64, I64, float64, F64, <= -1.0,
                                                >= 18446744073709551616.0);
        HANDLE_OP_END ();

      /* conversions of f32 */
      HANDLE_OP (WASM_OP_F32_CONVERT_S_I32):
        DEF_OP_CONVERT(float32, F32, int32, I32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_CONVERT_U_I32):
        DEF_OP_CONVERT(float32, F32, uint32, I32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_CONVERT_S_I64):
        DEF_OP_CONVERT(float32, F32, int64, I64);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_CONVERT_U_I64):
        DEF_OP_CONVERT(float32, F32, uint64, I64);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F32_DEMOTE_F64):
        DEF_OP_CONVERT(float32, F32, float64, F64);
        HANDLE_OP_END ();

      /* conversions of f64 */
      HANDLE_OP (WASM_OP_F64_CONVERT_S_I32):
        DEF_OP_CONVERT(float64, F64, int32, I32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_CONVERT_U_I32):
        DEF_OP_CONVERT(float64, F64, uint32, I32);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_CONVERT_S_I64):
        DEF_OP_CONVERT(float64, F64, int64, I64);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_CONVERT_U_I64):
        DEF_OP_CONVERT(float64, F64, uint64, I64);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_F64_PROMOTE_F32):
        DEF_OP_CONVERT(float64, F64, float32, F32);
        HANDLE_OP_END ();

      /* reinterpretations */
      HANDLE_OP (WASM_OP_I32_REINTERPRET_F32):
        DEF_OP_REINTERPRET(float32);
        HANDLE_OP_END ();
      HANDLE_OP (WASM_OP_I64_REINTERPRET_F64):
        DEF_OP_REINTERPRET(float64);
        HANDLE_OP_END ();
      HANDLE_OP (WASM_OP_F32_REINTERPRET_I32):
        DEF_OP_REINTERPRET(int32);
        HANDLE_OP_END ();
      HANDLE_OP (WASM_OP_F64_REINTERPRET_I64):
        DEF_OP_REINTERPRET(int64);
        HANDLE_OP_END ();

      HANDLE_OP (EXT_OP_COPY_STACK_TOP):
        addr1 = GET_OFFSET();
        addr2 = GET_OFFSET();
        frame_lp[addr2] = frame_lp[addr1];
        HANDLE_OP_END ();

      HANDLE_OP (EXT_OP_COPY_STACK_TOP_I64):
        addr1 = GET_OFFSET();
        addr2 = GET_OFFSET();
        *(float64*)(frame_lp + addr2) = *(float64*)(frame_lp + addr1);
        HANDLE_OP_END ();

      HANDLE_OP (WASM_OP_SET_LOCAL):
      HANDLE_OP (WASM_OP_TEE_LOCAL):
        {
          GET_LOCAL_INDEX_TYPE_AND_OFFSET();

          switch (local_type) {
            case VALUE_TYPE_I32:
            case VALUE_TYPE_F32:
              *(int32*)(frame_lp + local_offset) = GET_OPERAND(uint32, 0);
              break;
            case VALUE_TYPE_I64:
            case VALUE_TYPE_F64:
              PUT_I64_TO_ADDR((uint32*)(frame_lp + local_offset), GET_OPERAND(uint64, 0));
              break;
            default:
              wasm_set_exception(module, "invalid local type");
              goto got_exception;
          }

          HANDLE_OP_END ();
        }

      HANDLE_OP (WASM_OP_IMPDEP):
        frame = prev_frame;
        frame_ip = frame->ip;
        goto call_func_from_entry;

      HANDLE_OP (WASM_OP_CALL):
        fidx = frame_lp[GET_OFFSET()];
        bh_assert(fidx < module->function_count);
        cur_func = module->functions + fidx;
        goto call_func_from_interp;

#if WASM_ENABLE_LABELS_AS_VALUES == 0
      default:
        wasm_set_exception(module, "WASM interp failed: unsupported opcode.");
        goto got_exception;
    }
#endif

#if WASM_ENABLE_LABELS_AS_VALUES != 0
    HANDLE_OP (WASM_OP_UNUSED_0x06):
    HANDLE_OP (WASM_OP_UNUSED_0x07):
    HANDLE_OP (WASM_OP_UNUSED_0x08):
    HANDLE_OP (WASM_OP_UNUSED_0x09):
    HANDLE_OP (WASM_OP_UNUSED_0x0a):
    HANDLE_OP (WASM_OP_UNUSED_0x12):
    HANDLE_OP (WASM_OP_UNUSED_0x13):
    HANDLE_OP (WASM_OP_UNUSED_0x14):
    HANDLE_OP (WASM_OP_UNUSED_0x15):
    HANDLE_OP (WASM_OP_UNUSED_0x16):
    HANDLE_OP (WASM_OP_UNUSED_0x17):
    HANDLE_OP (WASM_OP_UNUSED_0x18):
    HANDLE_OP (WASM_OP_UNUSED_0x19):
    HANDLE_OP (WASM_OP_UNUSED_0x1c):
    HANDLE_OP (WASM_OP_UNUSED_0x1d):
    HANDLE_OP (WASM_OP_UNUSED_0x1e):
    HANDLE_OP (WASM_OP_UNUSED_0x1f):
    HANDLE_OP (WASM_OP_UNUSED_0x25):
    HANDLE_OP (WASM_OP_UNUSED_0x26):
    HANDLE_OP (WASM_OP_UNUSED_0x27):
    /* optimized op code */
    HANDLE_OP (WASM_OP_F32_STORE):
    HANDLE_OP (WASM_OP_F64_STORE):
    HANDLE_OP (WASM_OP_F32_LOAD):
    HANDLE_OP (WASM_OP_F64_LOAD):
    HANDLE_OP (EXT_OP_GET_LOCAL_FAST):
    HANDLE_OP (WASM_OP_GET_LOCAL):
    HANDLE_OP (WASM_OP_F64_CONST):
    HANDLE_OP (WASM_OP_I64_CONST):
    HANDLE_OP (WASM_OP_F32_CONST):
    HANDLE_OP (WASM_OP_I32_CONST):
    HANDLE_OP (WASM_OP_DROP):
    HANDLE_OP (WASM_OP_DROP_64):
    HANDLE_OP (WASM_OP_BLOCK):
    HANDLE_OP (WASM_OP_LOOP):
    HANDLE_OP (WASM_OP_END):
    HANDLE_OP (WASM_OP_NOP):
    {
      wasm_set_exception(module, "WASM interp failed: unsupported opcode.");
      goto got_exception;
    }
#endif

#if WASM_ENABLE_LABELS_AS_VALUES == 0
    continue;
#else
    FETCH_OPCODE_AND_DISPATCH ();
#endif

  call_func_from_interp:
    /* Only do the copy when it's called from interpreter.  */
    {
      WASMInterpFrame *outs_area = wasm_exec_env_wasm_stack_top(exec_env);
      outs_area->lp = outs_area->operand + cur_func->const_cell_num;
      for (int i = 0; i < cur_func->param_count; i++) {
        if (cur_func->param_types[i] == VALUE_TYPE_I64
          || cur_func->param_types[i] == VALUE_TYPE_F64) {
            *(int64*)(outs_area->lp) =
              GET_OPERAND(int64, (2 * (cur_func->param_count - i - 1)));
            outs_area->lp += 2;
        } else {
          *(outs_area->lp) = GET_OPERAND(int32, (2 * (cur_func->param_count - i - 1)));;
          outs_area->lp ++;
        }
      }
      frame_ip += cur_func->param_count * sizeof(int16);
      if (cur_func->ret_cell_num != 0)
        frame->ret_offset = GET_OFFSET();
      SYNC_ALL_TO_FRAME();
      prev_frame = frame;
    }

  call_func_from_entry:
    {
      if (cur_func->is_import_func) {
        wasm_interp_call_func_native(module, exec_env, cur_func, prev_frame);
        prev_frame = frame->prev_frame;
        cur_func = frame->function;
        UPDATE_ALL_FROM_FRAME();

        memory = module->default_memory;
        if (wasm_get_exception(module))
          goto got_exception;
      }
      else {
        WASMFunction *cur_wasm_func = cur_func->u.func;

        all_cell_num = (uint64)cur_func->param_cell_num
                       + (uint64)cur_func->local_cell_num
                       + (uint64)cur_func->const_cell_num
                       + (uint64)cur_wasm_func->max_stack_cell_num;
        if (all_cell_num >= UINT32_MAX) {
            wasm_set_exception(module, "WASM interp failed: stack overflow.");
            goto got_exception;
        }

        frame_size = wasm_interp_interp_frame_size((uint32)all_cell_num);
        if (!(frame = ALLOC_FRAME(exec_env, frame_size, prev_frame))) {
          frame = prev_frame;
          goto got_exception;
        }

        /* Initialize the interpreter context. */
        frame->function = cur_func;
        frame_ip = wasm_get_func_code(cur_func);
        frame_ip_end = wasm_get_func_code_end(cur_func);

        frame_lp = frame->lp = frame->operand + cur_wasm_func->const_cell_num;

        /* Initialize the consts */
        bh_memcpy_s(frame->operand, all_cell_num * 4,
                    cur_wasm_func->consts, cur_wasm_func->const_cell_num * 4);

        /* Initialize the local varialbes */
        memset(frame_lp + cur_func->param_cell_num, 0,
               (uint32)(cur_func->local_cell_num * 4));

        wasm_exec_env_set_cur_frame(exec_env, (WASMRuntimeFrame*)frame);
      }
      HANDLE_OP_END ();
    }

  return_func:
    {
      FREE_FRAME(exec_env, frame);
      wasm_exec_env_set_cur_frame(exec_env, (WASMRuntimeFrame*)prev_frame);

      if (!prev_frame->ip)
        /* Called from native. */
        return;

      RECOVER_CONTEXT(prev_frame);
      HANDLE_OP_END ();
    }

  (void)frame_ip_end;

  out_of_bounds:
    wasm_set_exception(module, "out of bounds memory access");

  got_exception:
    return;

#if WASM_ENABLE_LABELS_AS_VALUES == 0
  }
#else
  FETCH_OPCODE_AND_DISPATCH ();
#endif
}

#if WASM_ENABLE_FAST_INTERP != 0
void **
wasm_interp_get_handle_table()
{
    WASMModuleInstance module;
    memset(&module, 0, sizeof(WASMModuleInstance));
    wasm_interp_call_func_bytecode(&module, NULL, NULL, NULL);
    return global_handle_table;
}
#endif

void
wasm_interp_call_wasm(WASMModuleInstance *module_inst,
                      WASMExecEnv *exec_env,
                      WASMFunctionInstance *function,
                      uint32 argc, uint32 argv[])
{
    WASMRuntimeFrame *prev_frame = wasm_exec_env_get_cur_frame(exec_env);
    WASMInterpFrame *frame, *outs_area;

    /* Allocate sufficient cells for all kinds of return values.  */
    unsigned all_cell_num = 2, i;
    /* This frame won't be used by JITed code, so only allocate interp
       frame here.  */
    unsigned frame_size = wasm_interp_interp_frame_size(all_cell_num);

    if (argc != function->param_cell_num) {
        char buf[128];
        snprintf(buf, sizeof(buf),
                 "invalid argument count %d, expected %d",
                 argc, function->param_cell_num);
        wasm_set_exception(module_inst, buf);
        return;
    }

    /* TODO: check stack overflow. */

    if (!(frame = ALLOC_FRAME(exec_env, frame_size, (WASMInterpFrame*)prev_frame)))
        return;

    outs_area = wasm_exec_env_wasm_stack_top(exec_env);
    frame->function = NULL;
    frame->ip = NULL;
    /* There is no local variable. */
    frame->lp = frame->operand + 0;
    frame->ret_offset = 0;

    if (argc > 0)
        word_copy(outs_area->operand + function->const_cell_num, argv, argc);

    wasm_exec_env_set_cur_frame(exec_env, frame);

    if (function->is_import_func)
        wasm_interp_call_func_native(module_inst, exec_env, function, frame);
    else
        wasm_interp_call_func_bytecode(module_inst, exec_env, function, frame);

    /* Output the return value to the caller */
    if (!wasm_get_exception(module_inst)) {
        for (i = 0; i < function->ret_cell_num; i++)
            argv[i] = *(frame->lp + i);
    }

    wasm_exec_env_set_cur_frame(exec_env, prev_frame);
    FREE_FRAME(exec_env, frame);
}