diff options
Diffstat (limited to 'sys/arch/mvme88k/stand/libsa/exec_sun.c')
| -rw-r--r-- | sys/arch/mvme88k/stand/libsa/exec_sun.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/sys/arch/mvme88k/stand/libsa/exec_sun.c b/sys/arch/mvme88k/stand/libsa/exec_sun.c new file mode 100644 index 00000000000..5708b413541 --- /dev/null +++ b/sys/arch/mvme88k/stand/libsa/exec_sun.c @@ -0,0 +1,212 @@ +/* $Id: exec_sun.c,v 1.1 1997/03/03 19:30:36 rahnds Exp $ */ + +/*- + * Copyright (c) 1995 Theo de Raadt + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Theo de Raadt + * 4. The name of the Author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + * + * Copyright (c) 1982, 1986, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. + * + * @(#)boot.c 8.1 (Berkeley) 6/10/93 + */ + +#include <sys/param.h> +#include <sys/reboot.h> +#include <a.out.h> + +#include "stand.h" + +extern int debug; + +extern u_int bootdev; + +/*ARGSUSED*/ +exec_sun(file, loadaddr, howto) + char *file; + char *loadaddr; + int howto; +{ + register int io; + struct exec x; + int cc, magic; + void (*entry)(); + register char *cp; + register int *ip; + int textlen; + +#ifdef DEBUG + printf("exec_sun: file=%s loadaddr=0x%x\n", file, loadaddr); +#endif + + io = open(file, 0); + if (io < 0) + return(-1); + + /* + * Read in the exec header, and validate it. + */ + if (read(io, (char *)&x, sizeof(x)) != sizeof(x)) + goto shread; + if (N_BADMAG(x)) { + errno = EFTYPE; + goto closeout; + } + + cp = loadaddr; + textlen = x.a_text; + magic = N_GETMAGIC(x); + if (magic == ZMAGIC) { + cp += sizeof(x); + textlen -= sizeof(x); + } + entry = (void (*)())cp; + + /* + * Leave a copy of the exec header before the text. + * The sun3 kernel uses this to verify that the + * symbols were loaded by this boot program. + */ + bcopy(&x, cp - sizeof(x), sizeof(x)); + + /* + * Read in the text segment. + */ + printf("%x", x.a_text); + if (read(io, cp, textlen) != textlen) + goto shread; + cp += textlen; + + /* + * NMAGIC may have a gap between text and data. + */ + if (magic == NMAGIC) { + register int mask = N_PAGSIZ(x) - 1; + while ((int)cp & mask) + *cp++ = 0; + } + + /* + * Read in the data segment. + */ + printf("+%x", x.a_data); + if (read(io, cp, x.a_data) != x.a_data) + goto shread; + cp += x.a_data; + + /* + * Zero out the BSS section. + * (Kernel does not do it itself) + */ + printf("+%x", x.a_bss); + cc = x.a_bss; + while ((int)cp & 3) { + *cp++ = 0; + --cc; + } + ip = (int *)cp; + cp += cc; + while ((char *)ip < cp) + *ip++ = 0; + + /* + * Read in the symbol table and strings. + * (Always set the symtab size word.) + */ + *ip++ = x.a_syms; + cp = (char *)ip; + + if (x.a_syms > 0) { + + /* Symbol table and string table length word. */ + cc = x.a_syms; + printf("+[%x", cc); + cc += sizeof(int); /* strtab length too */ + if (read(io, cp, cc) != cc) + goto shread; + cp += x.a_syms; + ip = (int *)cp; /* points to strtab length */ + cp += sizeof(int); + + /* String table. Length word includes itself. */ + cc = *ip; + printf("+%x]", cc); + cc -= sizeof(int); + if (cc <= 0) + goto shread; + if (read(io, cp, cc) != cc) + goto shread; + cp += cc; + } + printf("=%x\n", cp - loadaddr); + close(io); + + if (debug) { + printf("Debug mode - enter c to continue\n"); + asm(" trap #0"); + } + + printf("Starting program at 0x%x\n", (int)entry); + (*entry)(howto, bootdev, cp, 0, 0); + panic("exec returned"); + +shread: + printf("exec: short read\n"); + errno = EIO; +closeout: + close(io); + return(-1); +} |