INNER CODE UNIT · C

hash

iqiyi/xHook · libxhook/jni/xh_elf.c:379

    uint32_t hash = xh_elf_gnu_hash((uint8_t *)symbol);
    
    static uint32_t elfclass_bits = sizeof(ElfW(Addr)) * 8;
    size_t word = self->bloom[(hash / elfclass_bits) % self->bloom_sz];
    size_t mask = 0
        | (size_t)1 << (hash % elfclass_bits)
        | (size_t)1 << ((hash >> self->bloom_shift) % elfclass_bits);
    
    //if at least one bit is not set, this symbol is surely missing
    if((word & mask) != mask) return XH_ERRNO_NOTFND;

    //ignore STN_UNDEF
    uint32_t i = self->bucket[hash % self->bucket_cnt];
    if(i < self->symoffset) return XH_ERRNO_NOTFND;
    
    //loop through the chain
    while(1)
    {

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