Commit Graph

3 Commits (0ea6e5c221a463ef5d62e00703e0d5595cc4d169)

Author SHA1 Message Date
Michael Brown bd5189a96d [util] Fix interpretation of short jumps in Option::ROM
Option::ROM was assuming that ROM images using a short jump
instruction for the init entry point would have a zero byte at offset
5; this is not necessarily true.
2008-08-27 20:36:30 +01:00
Michael Brown 23bca8f9d8 [util] Allow Option::ROM to understand and modify initialisation entry point
Add support for manipulating the jump instruction that forms the
option ROM initialisation entry point, so that mergerom.pl can treat
it just like other entry points.

Add support for merging the initialisation entry point (and IBM BOFM
table) to mergerom.pl; this is another slightly icky but unfortunately
necessary GPL vs. NDA workaround.  When mergerom.pl replaces an entry
point in the original ROM, it now fills in the corresponding entry
point in the merged ROM with the original value; this allows (for
example) a merged initialisation entry point to do some processing and
then jump back to the original entry point.
2008-08-15 04:10:35 +01:00
Michael Brown 6f73bb5e00 [util] Add Option::ROM library and rewrite disrom.pl to use it.
The Option::ROM module provides an easy way to read and edit fields
within option ROM headers.
2008-07-31 05:30:04 +01:00