1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1994-2002 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Miscellaneous ISA-specific code. 31 */ 32 #include <sys/types.h> 33 #include <sys/elf.h> 34 #include <sys/kobj.h> 35 #include <sys/kobj_impl.h> 36 37 /* 38 * Check that an ELF header corresponds to this machine's 39 * instruction set architecture. Used by kobj_load_module() 40 * to not get confused by a misplaced driver or kernel module 41 * built for a different ISA. 42 */ 43 int 44 elf_mach_ok(Elf32_Ehdr *h) 45 { 46 return ((h->e_ident[EI_DATA] == ELFDATA2LSB) && 47 (h->e_machine == EM_386)); 48 } 49 50 /* 51 * return non-zero for a bad address 52 */ 53 int 54 kobj_addrcheck(void *xmp, caddr_t adr) 55 { 56 struct module *mp; 57 58 mp = (struct module *)xmp; 59 60 if ((adr >= mp->text && adr < mp->text + mp->text_size) || 61 (adr >= mp->data && adr < mp->data + mp->data_size)) 62 return (0); /* ok */ 63 if (mp->bss && adr >= (caddr_t)mp->bss && 64 adr < (caddr_t)mp->bss + mp->bss_size) 65 return (0); 66 return (1); 67 } 68 69 70 /* 71 * Flush instruction cache after updating text 72 * This is a nop for this machine arch. 73 */ 74 /*ARGSUSED*/ 75 void 76 kobj_sync_instruction_memory(caddr_t addr, size_t len) 77 {} 78 79 /* 80 * Calculate memory image required for relocable object. 81 */ 82 /* ARGSUSED3 */ 83 int 84 get_progbits_size(struct module *mp, struct proginfo *tp, struct proginfo *dp, 85 struct proginfo *sdp) 86 { 87 struct proginfo *pp; 88 uint_t shn; 89 Shdr *shp; 90 91 /* 92 * loop through sections to find out how much space we need 93 * for text, data, (also bss that is already assigned) 94 */ 95 for (shn = 1; shn < mp->hdr.e_shnum; shn++) { 96 shp = (Shdr *)(mp->shdrs + shn * mp->hdr.e_shentsize); 97 if (!(shp->sh_flags & SHF_ALLOC)) 98 continue; 99 if (shp->sh_addr != 0) { 100 _kobj_printf(ops, 101 "%s non-zero sect addr in input file\n", 102 mp->filename); 103 return (-1); 104 } 105 pp = (shp->sh_flags & SHF_WRITE)? dp : tp; 106 107 if (shp->sh_addralign > pp->align) 108 pp->align = shp->sh_addralign; 109 pp->size = ALIGN(pp->size, shp->sh_addralign); 110 pp->size += ALIGN(shp->sh_size, 8); 111 } 112 tp->size = ALIGN(tp->size, 8); 113 dp->size = ALIGN(dp->size, 8); 114 return (0); 115 } 116