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loadfile_ecoff.c revision 1.3 
      1 /* $NetBSD: loadfile_ecoff.c,v 1.3 2001/11/09 19:27:25 christos Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9  * NASA Ames Research Center and by Christos Zoulas.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the NetBSD
     22  *	Foundation, Inc. and its contributors.
     23  * 4. Neither the name of The NetBSD Foundation nor the names of its
     24  *    contributors may be used to endorse or promote products derived
     25  *    from this software without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37  * POSSIBILITY OF SUCH DAMAGE.
     38  */
     39 
     40 #ifdef _STANDALONE
     41 #include <lib/libsa/stand.h>
     42 #include <lib/libkern/libkern.h>
     43 #else
     44 #include <stdio.h>
     45 #include <string.h>
     46 #include <errno.h>
     47 #include <stdlib.h>
     48 #include <unistd.h>
     49 #include <fcntl.h>
     50 #include <err.h>
     51 #endif
     52 
     53 #include <sys/param.h>
     54 #include <sys/exec.h>
     55 
     56 #include "loadfile.h"
     57 
     58 #ifdef BOOT_ECOFF
     59 
     60 int
     61 loadfile_coff(fd, coff, marks, flags)
     62 	int fd;
     63 	struct ecoff_exechdr *coff;
     64 	u_long *marks;
     65 	int flags;
     66 {
     67 	paddr_t offset = marks[MARK_START];
     68 	paddr_t minp = ~0, maxp = 0, pos;
     69 
     70 	/* Read in text. */
     71 	if (lseek(fd, ECOFF_TXTOFF(coff), SEEK_SET) == -1)  {
     72 		WARN(("lseek text"));
     73 		return 1;
     74 	}
     75 
     76 	if (coff->a.tsize != 0) {
     77 		if (flags & LOAD_TEXT) {
     78 			PROGRESS(("%lu", coff->a.tsize));
     79 			if (READ(fd, coff->a.text_start, coff->a.tsize) !=
     80 			    coff->a.tsize) {
     81 				return 1;
     82 			}
     83 		}
     84 		else {
     85 			if (lseek(fd, coff->a.tsize, SEEK_CUR) == -1) {
     86 				WARN(("read text"));
     87 				return 1;
     88 			}
     89 		}
     90 		if (flags & (COUNT_TEXT|LOAD_TEXT)) {
     91 			pos = coff->a.text_start;
     92 			if (minp > pos)
     93 				minp = pos;
     94 			pos += coff->a.tsize;
     95 			if (maxp < pos)
     96 				maxp = pos;
     97 		}
     98 	}
     99 
    100 	/* Read in data. */
    101 	if (coff->a.dsize != 0) {
    102 		if (flags & LOAD_DATA) {
    103 			PROGRESS(("+%lu", coff->a.dsize));
    104 			if (READ(fd, coff->a.data_start, coff->a.dsize) !=
    105 			    coff->a.dsize) {
    106 				WARN(("read data"));
    107 				return 1;
    108 			}
    109 		}
    110 		if (flags & (COUNT_DATA|LOAD_DATA)) {
    111 			pos = coff->a.data_start;
    112 			if (minp > pos)
    113 				minp = pos;
    114 			pos += coff->a.dsize;
    115 			if (maxp < pos)
    116 				maxp = pos;
    117 		}
    118 	}
    119 
    120 	/* Zero out bss. */
    121 	if (coff->a.bsize != 0) {
    122 		if (flags & LOAD_BSS) {
    123 			PROGRESS(("+%lu", coff->a.bsize));
    124 			BZERO(coff->a.bss_start, coff->a.bsize);
    125 		}
    126 		if (flags & (COUNT_BSS|LOAD_BSS)) {
    127 			pos = coff->a.bss_start;
    128 			if (minp > pos)
    129 				minp = pos;
    130 			pos = coff->a.bsize;
    131 			if (maxp < pos)
    132 				maxp = pos;
    133 		}
    134 	}
    135 
    136 	marks[MARK_START] = LOADADDR(minp);
    137 	marks[MARK_ENTRY] = LOADADDR(coff->a.entry);
    138 	marks[MARK_NSYM] = 1;	/* XXX: Kernel needs >= 0 */
    139 	marks[MARK_SYM] = LOADADDR(maxp);
    140 	marks[MARK_END] = LOADADDR(maxp);
    141 	return 0;
    142 }
    143 
    144 #endif /* BOOT_ECOFF */
    145