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#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 */
43int
44elf_mach_ok(Elf64_Ehdr *h)
45{
46	return ((h->e_ident[EI_DATA] == ELFDATA2LSB) &&
47	    (h->e_machine == EM_AMD64));
48}
49
50/*
51 * return non-zero for a bad address
52 */
53int
54kobj_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*/
75void
76kobj_sync_instruction_memory(caddr_t addr, size_t len)
77{}
78
79/*
80 * Calculate memory image required for relocable object.
81 */
82/* ARGSUSED3 */
83int
84get_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