1; 2; The prefix is a small structure that prefaces the actual code; 3; it gives the compression program necessary information. 4; 5 6 section .prefix nowrite progbits align=16 7pfx_start dd _start ; Start of raw chunk 8pfx_compressed dd __pm_code_lma ; Start of compressed chunk 9pfx_cdatalen dd lzo_data_size ; Pointer to compressed size field 10%if IS_ISOLINUX 11pfx_checksum dd bi_length ; File length and checksum fields 12%else 13pfx_checksum dd 0 ; No checksum 14%endif 15pfx_maxlma dd MaxLMA ; Maximum size 16 17 section .text16 18