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xfdDecrunchAddr.doc
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1999-03-29
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NAME
xfdDecrunch 1.3
SYNOPSIS
xfdDecrunchAddr SOURCE/A,DEST=TO,HEADER/N,ADDHEAD/S,DECRADDR,
JMPADDR
DESCRIPTION
xfdDecrunchAddr unpacks address crunched executablefiles. It
requires Kickstart V37+.
When calling it "xfdDecrunchAddr ?" you get above synopsis.
Entering "?" here again brings you a deeper help.
SOURCE specifies the file(s) that should be decrunched.
Wildcards are not supported.
DEST is the file to save the result to.
Without DEST, the old file will be overwritten.
HEADER specifies the header type, which should be linked to
the decrunched file:
0 - No header is linked.
1 - Only the executable hunk information is linked. This is useful
when the executable program is completely relocatable and thus
needs not to be forced to a certain memory region.
2 - Only the executable hunk information is linked, but this
contains one additional BSS hunk.
3 - The xfdDecrunch 1.08 simple header is linked.
4 - The xfdDecrunch 1.08 professional header is linked.
11- This is like 1, but the header overwrites file start and end.
12- This is like 2, but the header overwrites file start and end.
13- This is like 12, but has an additional empty RELOC hunk.
Header types 1 and 2 are useful, when the decrunched file is again
crunched with another cruncher. The other headers would hide this
and xfd cannot recognize the file. Be careful when using this
header, as created files will crash, when using absolute addresses.
Header types 11 to 13 are useful, when a file is double time
address crunched and the inner file-structure is overwritten by
NOP's or other commands. Be sure you know what you do when using
these headers!
xfdDecrunchAddr automatically checks if destination is normal
executable (should not happen ever - only when someone forgot to
unhunk the file before crunching) or if it is double crunched
by testing header type 1 and 2 internally. A message appears in
case xfdDecrunchAddr got such an file.
You should save the file with the header type printed there and
start xfdDecrunchAddr again. When header type 0 is told it maybe
needed to use types 11 to 13.
A special XFD external is supplied in LIBS:xfd/, which recognizes
xfdDecrunch and Object Master link headers and removes them. You
can use it to change the header type of decrunched file.
ADDHEAD forces xfdDecrunchAddr to do nothing except adding one
of above headers. For headers 3 and 4 you need to specify DECRADDR
and JMPADDR. If no JMPADDR is given, xfdDecrunchAddr uses the
DECRADDR instead for JumpIn as well.
HISTORY
xfdDecrunchAddr 1.3
- added new headers
xfdDecrunchAddr 1.2
- bug fix in help text
xfdDecrunchAddr 1.1
- added ADDHEAD, DECRADDR and JMPADDR keywords and header addition
xfdDecrunchAddr 1.0
- first version
COPYRIGHT
xfdDecrunchAddr is freely distributable and for
noncommercial use only.
AUTHOR
Dirk Stöcker <stoecker@amigaworld.com>