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Whether relocation information is present or not can be gathered from the element ph_absflag of the program header (see above). Basically only a relocation of 32-bit values (i.e. addresses) is possible; prior to GEMDOS Version 0.15 (or TOS Version 1.04) the relocation information was limited to a maximum of 32 kbytes.
The relocation table itself starts with a 32-bit value which marks the offset of the first value to be relocated relative to the start of the TEXT segment. Single bytes are then used for all following offsets. To be able to handle offsets greater than 255 correctly, one proceeds as follows: If a 1 is found as an offset (this is not possible due to the characteristics of the MC-680x0 processor family) then the value 254 is added automatically to the offset. For very large offsets this procedure can of course be repeated. Incidentally, an empty relocation table is flagged with a LONG value of 0.
nativ wrote:Pack Ice would compress executables ?
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