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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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installboot
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installsun.c
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C/C++ Source or Header
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1991-01-14
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2KB
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64 lines
/*
* installsun.c --
*
* Check the header of a coff? file.
*
* Copyright 1990 Regents of the University of California
* All rights reserved.
* 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/admin/installboot/RCS/installsun.c,v 1.1 90/02/16 16:12:24 shirriff Exp $ SPRITE (Berkeley)";
#endif
#include <sprite.h>
#include <kernel/sun3.md/procMach.h>
#include <stdio.h>
/*
*----------------------------------------------------------------------
*
* SunHeader -
*
* See if the boot program has a sun header.
*
* Results:
* length of a.out header if succeeded, or -1 if there was an error.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
SunHeader(bootFID, loadAddr, execAddr, length)
int bootFID; /* Handle on the boot program */
Address *loadAddr; /* Address to start loading boot program. */
Address *execAddr; /* Address to start executing boot program. */
int *length; /* Length of boot program. */
{
ProcExecHeader aout;
int bytesRead;
if (lseek(bootFID,0,0)<0) {
perror("");
return -1;
}
bytesRead = read(bootFID, (char *)&aout, sizeof(ProcExecHeader));
if (bytesRead < 0 || aout.magic != PROC_OMAGIC) {
return -1;
}
*loadAddr = 0;
*execAddr = 0;
*length = aout.code + aout.data;
return sizeof(ProcExecHeader);
}