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/param.h> 28 #include <sys/exec.h> 29 #include <sys/linker.h> 30 #include <string.h> 31 #include <machine/bootinfo.h> 32 #include <machine/elf.h> 33 #include <stand.h> 34 35 #include "bootstrap.h" 36 #include "libi386.h" 37 #include "btxv86.h" 38 39 static int elf32_exec(struct preloaded_file *amp); 40 static int elf32_obj_exec(struct preloaded_file *amp); 41 42 struct file_format i386_elf = { 43 .l_load = elf32_loadfile, 44 .l_exec = elf32_exec 45 }; 46 struct file_format i386_elf_obj = { 47 .l_load = elf32_obj_loadfile, 48 .l_exec = elf32_obj_exec 49 }; 50 51 /* 52 * There is an ELF kernel and one or more ELF modules loaded. 53 * We wish to start executing the kernel image, so make such 54 * preparations as are required, and do so. 55 */ 56 static int 57 elf32_exec(struct preloaded_file *fp) 58 { 59 struct file_metadata *md; 60 Elf_Ehdr *ehdr; 61 vm_offset_t entry, bootinfop, modulep, kernend; 62 int boothowto, err, bootdev; 63 64 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) 65 return(EFTYPE); 66 ehdr = (Elf_Ehdr *)&(md->md_data); 67 68 err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend); 69 if (err != 0) 70 return(err); 71 entry = ehdr->e_entry & 0xffffff; 72 73 #ifdef DEBUG 74 printf("Start @ 0x%lx ...\n", entry); 75 #endif 76 77 dev_cleanup(); 78 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend); 79 80 panic("exec returned"); 81 } 82 83 static int 84 elf32_obj_exec(struct preloaded_file *fp) 85 { 86 return (EFTYPE); 87 } 88