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 /* 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 #include <sys/archsystm.h> 35 36 extern int use_iflush; 37 38 /* 39 * Check that an ELF header corresponds to this machine's 40 * instruction set architecture. Used by kobj_load_module() 41 * to not get confused by a misplaced driver or kernel module 42 * built for a different ISA. 43 */ 44 int 45 elf_mach_ok(Ehdr *h) 46 { 47 /* 48 * XX64 This should eventually be folded into a v9-isa specific file 49 */ 50 return (h->e_ident[EI_DATA] == ELFDATA2MSB && 51 (h->e_machine == EM_SPARCV9)); 52 } 53 54 55 /* 56 * return non-zero for a bad-address 57 */ 58 int 59 kobj_addrcheck(void *xmp, caddr_t adr) 60 { 61 struct module *mp; 62 63 mp = (struct module *)xmp; 64 65 if ((adr >= mp->text && adr < mp->text + mp->text_size) || 66 (adr >= mp->data && adr < mp->data + mp->data_size)) 67 return (0); /* ok */ 68 if (mp->bss && adr >= (caddr_t)mp->bss && 69 adr < (caddr_t)mp->bss + mp->bss_size) 70 return (0); 71 return (1); 72 } 73 74 /* 75 * Flush instruction cache after updating text 76 */ 77 void 78 kobj_sync_instruction_memory(caddr_t addr, size_t len) 79 { 80 caddr_t eaddr = addr + len; 81 82 if (!use_iflush) 83 return; 84 85 addr = (caddr_t)((uintptr_t)addr & -8l); /* sparc needs 8-byte align */ 86 87 while (addr < eaddr) { 88 doflush(addr); 89 addr += 8; 90 } 91 } 92 93 /* 94 * Calculate memory image required for relocatable object. 95 */ 96 /* ARGSUSED3 */ 97 int 98 get_progbits_size(struct module *mp, struct proginfo *tp, struct proginfo *dp, 99 struct proginfo *sdp) 100 { 101 struct proginfo *pp; 102 uint_t shn; 103 Shdr *shp; 104 105 /* 106 * loop through sections to find out how much space we need 107 * for text, data, (also bss that is already assigned) 108 */ 109 for (shn = 1; shn < mp->shnum; shn++) { 110 shp = (Shdr *)(mp->shdrs + shn * mp->hdr.e_shentsize); 111 if (!(shp->sh_flags & SHF_ALLOC)) 112 continue; 113 if (shp->sh_addr != 0) { 114 _kobj_printf(ops, 115 "%s non-zero sect addr in input file\n", 116 mp->filename); 117 return (-1); 118 } 119 pp = (shp->sh_flags & SHF_WRITE)? dp : tp; 120 121 if (shp->sh_addralign > pp->align) 122 pp->align = shp->sh_addralign; 123 pp->size = ALIGN(pp->size, shp->sh_addralign); 124 pp->size += ALIGN(shp->sh_size, 8); 125 } 126 tp->size = ALIGN(tp->size, 8); 127 dp->size = ALIGN(dp->size, 8); 128 return (0); 129 } 130