2 This file is getting obsolete. RDOFF documentation is written in Texinfo now.
3 Directory doc/ contains Texinfo source (rdoff.texi) and makefile for creating
4 different output formats (info, HTML, PostScript and PDF).
7 RDOFF Utilities, version 0.3.2
8 ==============================
10 The files contained in this directory are the C source code of a set
11 of tools (and general purpose library files) for the manipulation of
12 RDOFF version 2 object files. Note that these programs (with the
13 exception of 'rdfdump') will NOT work with version 1 object files.
14 Version 1 of RDOFF is no longer supported.
16 There is also a 'doc' directory with 'v1-v2' file, which documents the
17 differences between RDOFF 1 and 2, and an 'rdoff2.texi' (texinfo source),
18 with complete documentation for the new format.
20 Here is a brief summary of the programs' usage:
26 This tool prints a list of the header records in an RDOFF object in
27 human-readable form, and optionally prints a hex dump of the contents
33 The -v flag specifies that the hex dump (see above) should be printed.
35 Changes from previous versions:
37 * rdfdump supports both version 1 and 2 of RDOFF.
38 * rdfdump now gives warnings if the RDOFF2 format is violated (it
39 looks for incorrect lengths for header records, and checks the
40 overall length count at the start of the file)
46 This tool is a version of unix 'ld' (or DOS 'link') for use with RDOFF
47 files. It is capable of linking RDOFF objects, and libraries produced
48 with the 'rdlib' utility discussed below.
50 In normal usage, its command line takes the form:
52 ldrdf [-o output-file] object files [-llibrary ...]
54 Modules in libraries are not linked to the program unless they are
57 Most of its options are not implemented, but those that are are listed here:
59 -2 redirect all output from stderr to stdout. It is useful for some
60 systems which don't have such a redirection in shell (e.g. DOS).
62 -v increase verbosity level. Currently 4 verbosity levels are
63 available: default (which only prints error information), normal
64 (which prints information about the produced object, -v), medium
65 (which prints information about what the program is doing, -v -v)
66 and high (which prints all available information, -v -v -v).
68 -a change alignment value to which multiple segments combigned into
69 a single segment should be aligned (must be either 1, 2, 4, 8,
70 16, 32 or 256. Default is 16).
72 -s strip exported symbols from output file. Symbols marked as
73 SYM_GLOBAL are never stripped.
75 -x warn about unresolved symbols.
77 -xe issue an error when at least one symbol is unresolved.
79 -o name write output to file <name>. The default output filename
82 -j path specify search path for object files. Default path is a
85 -L path specify search path for libraries. Default path is a
88 -g file embed 'file' as a first header record with type 'generic'.
94 This program simply loads and executes an RDOFF object, by calling
95 '_main', which it expects to be a C-style function, which will accept
96 two parameters, argc and argv in normal C style.
102 This program creates a library file for use with ldrdf.
104 It is supplied with a shell script 'makelib' which should probably be used
108 rdflib command library [optional arguments]
112 c Create (or truncate) the library
113 a Add a module (requires a filename and a name to give the
114 module, ie 'rdflib a libc.rdl strcpy.rdf strcpy' puts the
115 file 'strcpy.rdf' into 'libc.rdl', and calls it 'strcpy'.
116 x Extract (arguments are the opposite to the 'a' command,
117 ie you'd do 'rdflib x libc.rdl strcpy strcpy.rdf to get
118 a copy of strcpy.rdf back out again...)
119 t List modules in the library
120 d Delete modules from library
121 r Replace a module in library with a new file
127 The files 'rdoff.c', 'rdoff.h', 'rdfload.c' and 'rdfload.h' contain
128 code which you may find useful. They retain the same interface as
129 the previous version, so any code that used them previously should
130 still work OK (maybe). 'rdoff.c' contains at the top a line:
132 #define STRICT_ERRORS
134 Comment this line out if you wish to use record types other than the
135 7 predefined types; it will then not report such records as an error,
136 but accept them gracefully, and read them byte for byte into
137 a 'generic record' (see the definition of GenericRec in 'rdoff.h').
139 If you are using these functions to write RDF modules (rather than
140 just reading them), then please note the existance of a new function
141 'rdfaddsegment(rdf_headerbuf,long)'. This must be called once for
142 each segment in your object, to tell the header writing functions
143 how long the segment is.
149 This product has recently undergone a major revision, and as such there
150 are probably several bugs left over from the testing phase (although the
151 previous version had quite a few that have now been fixed!). Could you
152 please report any bugs to maintainers at the addresses below, including the
153 following information:
155 - A description of the bug
156 - What you think the program should be doing
157 - Which programs you are using
158 - Which operating system you are using, and which C compiler was used to
159 compile the programs (or state that the pre-compiled versions were used).
160 - If appropriate, any of the following:
161 * source code (preferably cut down to a minimum that will still assemble
163 * the output of rdfdump on produced modules (or send the module if the
164 problem is in code generated)
165 * exact descriptions of error messages/symptoms/etc
171 There are still various things unimplemented that we would like to add.
172 If you want to find out what these are, search near the top of each *.c
173 file for a comment containing the word 'TODO'. A brief list is given here:
175 - Improve the performace of ldrdf (there are several enhancements I can think
176 of that wouldn't be too hard to add)
177 - Stop assuming that we're on a little endian machine
178 - Check for more bugs
184 Yuri Zaporozhets <r_tty@yahoo.co.uk> - primary maintainer
185 Julian Hall <jules@dsf.org.uk> - original designer and author