plcrash_error_t plcrash_async_dwarf_read_uintmax64()

in Source/PLCrashAsyncDwarfPrimitives.hpp [364:405]

• 35 lines of code
• 6 McCabe index (conditional complexity)

plcrash_error_t plcrash_async_dwarf_read_uintmax64 (plcrash_async_mobject_t *mobj,
                                                    const plcrash_async_byteorder_t *byteorder,
                                                    pl_vm_address_t base_addr,
                                                    pl_vm_off_t offset,
                                                    uint8_t data_size,
                                                    T *dest)
{
    union udata {
        uint8_t u8;
        uint16_t u16;
        uint32_t u32;
        uint64_t u64;
    } *data;
    
    data = (union udata *) plcrash_async_mobject_remap_address(mobj, base_addr, offset, data_size);
    if (data == NULL)
        return PLCRASH_EINVAL;
    
    switch (data_size) {
        case 1:
            *dest = data->u8;
            break;
            
        case 2:
            *dest = byteorder->swap16(data->u16);
            break;
            
        case 4:
            *dest = byteorder->swap32(data->u32);
            break;
            
        case 8:
            *dest = (T)byteorder->swap64(data->u64);
            break;
            
        default:
            PLCF_DEBUG("Unhandled data width %" PRIu64, (uint64_t) data_size);
            return PLCRASH_EINVAL;
    }
    
    return PLCRASH_ESUCCESS;
}