home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Sprite 1984 - 1993
/
Sprite 1984 - 1993.iso
/
src
/
machserver
/
1.098
/
proc
/
machTypeSparc.c
< prev
next >
Wrap
C/C++ Source or Header
|
1991-03-16
|
3KB
|
101 lines
/*
* machTypeSparc.c --
*
* Contains the machine specific routine for determining if
* a file is an object file for a Sun 4.
*
* 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/machTypeSparc.c,v 1.3 90/10/19 15:25:45 jhh Exp Locker: shirriff $";
#endif /* not lint */
#include <sun4.md/sys/exec.h>
#include <sun4.md/a.out.h>
#include "file.h"
/*
*----------------------------------------------------------------------
*
* machTypeSparc --
*
* Determine if the file is a sparc-specific file type.
*
* Results:
* If successful, return the name of the machine. Otherwise
* return NULL.
*
* Side effects:
* Modifies the `magic' number.
*
*----------------------------------------------------------------------
*/
char *
machTypeSparc(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;
if (header->a_machtype == M_SPARC) {
/*
* We can't just use the declared bitfield to check for
* dynamic, since the bitorder is different on different
* machines.
*/
if (((unsigned char *)header)[0]&0x80) {
*other = "dynamically linked";
}
return "sparc";
}
}
if (FMT_SPARC_FORMAT != hostFmt) {
status = Fmt_Convert("{b1b1h1w7}", FMT_SPARC_FORMAT, &bufferSize,
(char *) 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;
if (header->a_machtype == M_SPARC) {
if (((unsigned char *)header)[0]&0x80) {
*other = "dynamically linked";
}
return "sparc";
}
}
}
return NULL;
}