hashtable.h File Reference

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Functions
st32	get_hash_code (ut32 ins_pos)

Function Documentation

get_hash_code()

st32 get_hash_code

(

ut32

ins_pos

)

Definition at line 2801 of file hashtable.c.

                                 {
    ut32 len, ins_part1;
    ut32 opcode, pos;
    st32 (*get_hashcode_func)(st32 arg, st32 arg2);
    ut32 ins_len;
    st32 arg, ins_part2, hash_code;
 
    ins_part1 = 0;
    ins_part2 = 0;
 
    opcode = get_ins_part(ins_pos, 1);
    ins_len = get_ins_len(opcode);
 
    if (C55PLUS_DEBUG) {
        printf("opcode: 0x%x part: %d\n", opcode, ins_pos);
        printf("ins_len: 0x%x\n", ins_len);
    }
 
    if (ins_len > 1) {
        len = ins_len - 1;
        if (len >= 4) {
            len = 4;
        }
 
        ins_part1 = get_ins_part(ins_pos + 1, len) << (8 * (4 - len));
        ins_part2 = 0;
        if (ins_len > 5) {
            ins_part2 = get_ins_part(ins_pos + 5, 1);
        }
    }
 
    pos = (2 * opcode | (ins_part1 >> 31));
    // arg = *(ut32 *)(((ut8 *)ins_hash)+ pos * 8);
    arg = ins_hash[pos].code;
 
    ins_part2 >>= 7;
    ins_part2 |= (ins_part1 * 2);
 
    // get_hashcode_func = *(ut32 *)(((ut8 *)ins_hash + sizeof(ut32)) + pos * 8);
    get_hashcode_func = ins_hash[pos].hash_func;
 
    if (C55PLUS_DEBUG) {
        printf("hashfunc => %p 0x%x\n", get_hashcode_func, pos);
        printf("hashargs => 0x%x 0x%x 0x%x\n", (ut32)arg, ins_part1, ins_part2);
    }
 
    hash_code = get_hashcode_func(arg, ins_part2);
    if (C55PLUS_DEBUG) {
        printf("ret hashcode: 0x%x\n", hash_code);
    }
 
    return hash_code;
}

References arg(), C55PLUS_DEBUG, HASHCODE_ENTRY_T::code, get_ins_len(), get_ins_part(), HASHCODE_ENTRY_T::hash_func, ins_hash, len, pos, printf(), and st32.

Referenced by do_decode().