1 /* 2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 29 #include <sys/param.h> 30 #include <sys/exec.h> 31 #include <sys/linker.h> 32 #include <string.h> 33 #include <machine/bootinfo.h> 34 #include <machine/elf.h> 35 #include <stand.h> 36 37 #include "bootstrap.h" 38 #include "libi386.h" 39 #include "btxv86.h" 40 41 static int elf32_exec(struct preloaded_file *amp); 42 static int elf32_obj_exec(struct preloaded_file *amp); 43 44 struct file_format i386_elf = { elf32_loadfile, elf32_exec }; 45 struct file_format i386_elf_obj = { elf32_obj_loadfile, elf32_obj_exec }; 46 47 /* 48 * There is an ELF kernel and one or more ELF modules loaded. 49 * We wish to start executing the kernel image, so make such 50 * preparations as are required, and do so. 51 */ 52 static int 53 elf32_exec(struct preloaded_file *fp) 54 { 55 struct file_metadata *md; 56 Elf_Ehdr *ehdr; 57 vm_offset_t entry, bootinfop, modulep, kernend; 58 int boothowto, err, bootdev; 59 60 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 61 return(EFTYPE); 62 ehdr = (Elf_Ehdr *)&(md->md_data); 63 64 err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend); 65 if (err != 0) 66 return(err); 67 entry = ehdr->e_entry & 0xffffff; 68 69 #ifdef DEBUG 70 printf("Start @ 0x%lx ...\n", entry); 71 #endif 72 73 dev_cleanup(); 74 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend); 75 76 panic("exec returned"); 77 } 78 79 static int 80 elf32_obj_exec(struct preloaded_file *fp __unused) 81 { 82 return (EFTYPE); 83 } 84