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 1994-2003 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 #include <sys/archsystm.h> 37 38 extern int use_iflush; 39 40 /* 41 * Check that an ELF header corresponds to this machine's 42 * instruction set architecture. Used by kobj_load_module() 43 * to not get confused by a misplaced driver or kernel module 44 * built for a different ISA. 45 */ 46 int 47 elf_mach_ok(Ehdr *h) 48 { 49 /* 50 * XX64 This should eventually be folded into a v9-isa specific file 51 */ 52 return (h->e_ident[EI_DATA] == ELFDATA2MSB && 53 (h->e_machine == EM_SPARCV9)); 54 } 55 56 57 /* 58 * return non-zero for a bad-address 59 */ 60 int 61 kobj_addrcheck(void *xmp, caddr_t adr) 62 { 63 struct module *mp; 64 65 mp = (struct module *)xmp; 66 67 if ((adr >= mp->text && adr < mp->text + mp->text_size) || 68 (adr >= mp->data && adr < mp->data + mp->data_size)) 69 return (0); /* ok */ 70 if (mp->bss && adr >= (caddr_t)mp->bss && 71 adr < (caddr_t)mp->bss + mp->bss_size) 72 return (0); 73 return (1); 74 } 75 76 /* 77 * Flush instruction cache after updating text 78 */ 79 void 80 kobj_sync_instruction_memory(caddr_t addr, size_t len) 81 { 82 caddr_t eaddr = addr + len; 83 84 if (!use_iflush) 85 return; 86 87 addr = (caddr_t)((uintptr_t)addr & -8l); /* sparc needs 8-byte align */ 88 89 while (addr < eaddr) { 90 doflush(addr); 91 addr += 8; 92 } 93 } 94 95 /* 96 * Calculate memory image required for relocatable object. 97 */ 98 /* ARGSUSED3 */ 99 int 100 get_progbits_size(struct module *mp, struct proginfo *tp, struct proginfo *dp, 101 struct proginfo *sdp) 102 { 103 struct proginfo *pp; 104 uint_t shn; 105 Shdr *shp; 106 107 /* 108 * loop through sections to find out how much space we need 109 * for text, data, (also bss that is already assigned) 110 */ 111 for (shn = 1; shn < mp->hdr.e_shnum; shn++) { 112 shp = (Shdr *)(mp->shdrs + shn * mp->hdr.e_shentsize); 113 if (!(shp->sh_flags & SHF_ALLOC)) 114 continue; 115 if (shp->sh_addr != 0) { 116 _kobj_printf(ops, 117 "%s non-zero sect addr in input file\n", 118 mp->filename); 119 return (-1); 120 } 121 pp = (shp->sh_flags & SHF_WRITE)? dp : tp; 122 123 if (shp->sh_addralign > pp->align) 124 pp->align = shp->sh_addralign; 125 pp->size = ALIGN(pp->size, shp->sh_addralign); 126 pp->size += ALIGN(shp->sh_size, 8); 127 } 128 tp->size = ALIGN(tp->size, 8); 129 dp->size = ALIGN(dp->size, 8); 130 return (0); 131 } 132