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 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* 28 * Miscellaneous ISA-specific code. 29 */ 30 #include <sys/types.h> 31 #include <sys/elf.h> 32 #include <sys/kobj.h> 33 #include <sys/kobj_impl.h> 34 35 /* 36 * Check that an ELF header corresponds to this machine's 37 * instruction set architecture. Used by kobj_load_module() 38 * to not get confused by a misplaced driver or kernel module 39 * built for a different ISA. 40 */ 41 int 42 elf_mach_ok(Elf64_Ehdr *h) 43 { 44 return ((h->e_ident[EI_DATA] == ELFDATA2LSB) && 45 (h->e_machine == EM_AMD64)); 46 } 47 48 /* 49 * return non-zero for a bad address 50 */ 51 int 52 kobj_addrcheck(void *xmp, caddr_t adr) 53 { 54 struct module *mp; 55 56 mp = (struct module *)xmp; 57 58 if ((adr >= mp->text && adr < mp->text + mp->text_size) || 59 (adr >= mp->data && adr < mp->data + mp->data_size)) 60 return (0); /* ok */ 61 if (mp->bss && adr >= (caddr_t)mp->bss && 62 adr < (caddr_t)mp->bss + mp->bss_size) 63 return (0); 64 return (1); 65 } 66 67 68 /* 69 * Flush instruction cache after updating text 70 * This is a nop for this machine arch. 71 */ 72 /*ARGSUSED*/ 73 void 74 kobj_sync_instruction_memory(caddr_t addr, size_t len) 75 {} 76 77 /* 78 * Calculate memory image required for relocable object. 79 */ 80 /* ARGSUSED3 */ 81 int 82 get_progbits_size(struct module *mp, struct proginfo *tp, struct proginfo *dp, 83 struct proginfo *sdp) 84 { 85 struct proginfo *pp; 86 uint_t shn; 87 Shdr *shp; 88 89 /* 90 * loop through sections to find out how much space we need 91 * for text, data, (also bss that is already assigned) 92 */ 93 for (shn = 1; shn < mp->hdr.e_shnum; shn++) { 94 shp = (Shdr *)(mp->shdrs + shn * mp->hdr.e_shentsize); 95 if (!(shp->sh_flags & SHF_ALLOC)) 96 continue; 97 if (shp->sh_addr != 0) { 98 _kobj_printf(ops, 99 "%s non-zero sect addr in input file\n", 100 mp->filename); 101 return (-1); 102 } 103 pp = (shp->sh_flags & SHF_WRITE)? dp : tp; 104 105 if (shp->sh_addralign > pp->align) 106 pp->align = shp->sh_addralign; 107 pp->size = ALIGN(pp->size, shp->sh_addralign); 108 pp->size += ALIGN(shp->sh_size, 8); 109 } 110 tp->size = ALIGN(tp->size, 8); 111 dp->size = ALIGN(dp->size, 8); 112 return (0); 113 } 114