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Sprite 1984 - 1993
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machTypeSpur.c
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C/C++ Source or Header
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1991-03-16
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/*
* machTypeSpur.c --
*
* Contains the machine specific routine for determining if
* a file is an object file for spur.
*
* Copyright 1989 Regents of the University of California
* Permission to use, copy, modify, and distribute this
* software and its documentation for any purpose and without
* fee is hereby granted, provided that the above copyright
* notice appear in all copies. The University of California
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
*/
#ifndef lint
static char rcsid[] = "$Header: /sprite/src/attcmds/file/RCS/machTypeSpur.c,v 1.2 90/02/07 23:06:50 shirriff Exp Locker: shirriff $";
#endif /* not lint */
#include <spur.md/sys/exec.h>
#include <spur.md/a.out.h>
#include "file.h"
/*
*----------------------------------------------------------------------
*
* machTypeSpur --
*
* Determine if the file is a spur-specific file type.
*
* Results:
* If successful, return the name of the machine. Otherwise
* return NULL.
*
* Side effects:
* Modifies the `magic' number.
*
*----------------------------------------------------------------------
*/
char *
machTypeSpur(bufferSize, buffer, magic, syms, other)
int bufferSize; /* size of buffer */
char *buffer; /* buffer containing header */
int *magic; /* pointer to magic number */
int *syms; /* pointer to symbols */
char **other; /* other information to return */
{
struct exec *header;
char swappedHeader[sizeof(*header) * 2];
int swappedSize = sizeof(swappedHeader);
int status;
*other = "";
if (bufferSize < sizeof(struct exec)) {
return NULL;
}
header = (struct exec *) buffer;
if (!N_BADMAG(*header)) {
*magic = header->a_magic;
*syms = header->a_syms;
return "spur";
}
if (FMT_SPUR_FORMAT != hostFmt) {
status = Fmt_Convert("{w12}", FMT_SPUR_FORMAT, &bufferSize, buffer,
hostFmt, &swappedSize, swappedHeader);
if (status) {
#ifndef KERNEL
fprintf(stderr, "Fmt_Convert returned %d.\n", status);
#endif
return NULL;
}
header = (struct exec *) swappedHeader;
if (!N_BADMAG(*header)) {
*magic = header->a_magic;
*syms = header->a_syms;
return "spur";
}
}
return NULL;
}