106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/* $NetBSD: load_elf64.c,v 1.2 2006/04/22 07:58:53 cherry Exp $ */
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/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* Copyright (c) 1998 Peter Wemm <peter@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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/* __FBSDID("$FreeBSD: src/sys/boot/common/load_elf.c,v 1.30.2.1 2004/09/03 19:25:40 iedowse Exp $"); */
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#include <sys/param.h>
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#include <sys/exec.h>
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#include <lib/libsa/stand.h>
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#include <lib/libsa/loadfile.h>
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#include "bootstrap.h"
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#ifdef BOOT_ELF64
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/*
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* Attempt to load the file (file) as an ELF module. It will be stored at
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* (dest), and a pointer to a module structure describing the loaded object
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* will be saved in (result).
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*/
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int
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elf64_loadfile(char *filename, u_int64_t dest, struct preloaded_file **result)
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{
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struct preloaded_file *fp;
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u_long *marks;
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int err;
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u_int pad;
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ssize_t bytes_read;
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int fd;
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/*
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* Open the image, read and validate the ELF header
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*/
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if (filename == NULL) /* can't handle nameless */
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return(EFTYPE);
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fp = file_alloc();
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marks = fp->marks;
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if (fp == NULL) {
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printf("elf64_loadfile: cannot allocate module info\n");
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err = EPERM;
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goto out;
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}
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fp->f_name = strdup(filename);
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fp->f_type = strdup(ELF64_KERNELTYPE);
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marks[MARK_START] = dest;
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if ((fd = loadfile(filename, marks, LOAD_KERNEL)) == -1)
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goto oerr;
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close(fd);
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dest = marks[MARK_ENTRY];
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printf("%s entry at 0x%lx\n", filename, (uintmax_t)dest);
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fp->f_size = marks[MARK_END] - marks[MARK_START];
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fp->f_addr = marks[MARK_START];
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if (fp->f_size == 0 || fp->f_addr == 0)
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goto ioerr;
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/* Load OK, return module pointer */
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*result = fp;
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err = 0;
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goto out;
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ioerr:
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err = EIO;
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oerr:
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file_discard(fp);
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out:
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return(err);
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}
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#endif /*BOOT_ELF64*/
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