| /* ----------------------------------------------------------------------- * |
| * |
| * Copyright 1996-2009 The NASM Authors - All Rights Reserved |
| * See the file AUTHORS included with the NASM distribution for |
| * the specific copyright holders. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * ----------------------------------------------------------------------- */ |
| |
| /* |
| * rdx.c RDOFF Object File loader program |
| */ |
| |
| /* 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 "compiler.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "rdfload.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); |
| } |
| |
| rdoff_init(); |
| |
| 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)(size_t) s->offset; |
| |
| argv++, argc--; /* remove 'rdx' from command line */ |
| |
| return code(argc, argv); /* execute */ |
| } |