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rdx.c
Package: nasm-0.98.zip [view]
Upload User: yuppie_zhu
Upload Date: 2007-01-08
Package Size: 535k
Code Size: 2k
Category:
Compiler program
Development Platform:
C/C++
- /* rdx.c RDOFF Object File loader program
- *
- * The Netwide Assembler is copyright (C) 1996 Simon Tatham and
- * Julian Hall. All rights reserved. The software is
- * redistributable under the licence given in the file "Licence"
- * distributed in the NASM archive.
- */
- /* note: most of the actual work of this program is done by the modules
- "rdfload.c", which loads and relocates the object file, and by "rdoff.c",
- which contains general purpose routines to manipulate RDOFF object
- files. You can use these files in your own program to load RDOFF objects
- and execute the code in them in a similar way to what is shown here. */
- #include <stdio.h>
- #include <stdlib.h>
- #include "rdfload.h"
- #include "rdoff.h"
- #include "symtab.h"
- typedef int (*main_fn) (int,char**); /* Main function prototype */
- int main(int argc, char **argv)
- {
- rdfmodule * m;
- main_fn code;
- symtabEnt * s;
- if (argc < 2)
- {
- puts("usage: rdx <rdoff-executable> [params]n");
- exit(255);
- }
- m = rdfload(argv[1]);
- if (! m)
- {
- rdfperror("rdx",argv[1]);
- exit(255);
- }
- rdf_relocate(m); /* in this instance, the default relocation
- values will work fine, but they may need changing
- in other cases... */
- s = symtabFind(m->symtab, "_main");
- if (! s)
- {
- fprintf(stderr,"rdx: could not find symbol '_main' in '%s'n",argv[1]);
- exit(255);
- }
- code = (main_fn) s->offset;
- argv++, argc--; /* remove 'rdx' from command line */
- return code(argc,argv); /* execute */
- }