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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/sysmacros.h>
#include <sys/modctl.h>
#include <sys/debug.h>
#include <sys/mman.h>
#include <sys/modctl.h>
#include <sys/kobj.h>
#include <ctf_impl.h>
int ctf_leave_compressed = 0;
static struct modlmisc modlmisc = {
&mod_miscops, "Compact C Type Format routines"
};
static struct modlinkage modlinkage = {
MODREV_1, &modlmisc, NULL
};
int
_init(void)
{
return (mod_install(&modlinkage));
}
int
_info(struct modinfo *mip)
{
return (mod_info(&modlinkage, mip));
}
int
_fini(void)
{
return (mod_remove(&modlinkage));
}
/*ARGSUSED*/
void *
ctf_zopen(int *errp)
{
return ((void *)1); /* zmod is always loaded because we depend on it */
}
/*ARGSUSED*/
const void *
ctf_sect_mmap(ctf_sect_t *sp, int fd)
{
return (MAP_FAILED); /* we don't support this in the kernel */
}
/*ARGSUSED*/
void
ctf_sect_munmap(const ctf_sect_t *sp)
{
/* we don't support this in the kernel */
}
/*ARGSUSED*/
ctf_file_t *
ctf_fdopen(int fd, int *errp)
{
return (ctf_set_open_errno(errp, ENOTSUP));
}
/*ARGSUSED*/
ctf_file_t *
ctf_open(const char *filename, int *errp)
{
return (ctf_set_open_errno(errp, ENOTSUP));
}
/*ARGSUSED*/
int
ctf_write(ctf_file_t *fp, int fd)
{
return (ctf_set_errno(fp, ENOTSUP));
}
int
ctf_version(int version)
{
ASSERT(version > 0 && version <= CTF_VERSION);
if (version > 0)
_libctf_version = MIN(CTF_VERSION, version);
return (_libctf_version);
}
/*ARGSUSED*/
ctf_file_t *
ctf_modopen(struct module *mp, int *error)
{
ctf_sect_t ctfsect, symsect, strsect;
ctf_file_t *fp = NULL;
int err;
if (error == NULL)
error = &err;
ctfsect.cts_name = ".SUNW_ctf";
ctfsect.cts_type = SHT_PROGBITS;
ctfsect.cts_flags = SHF_ALLOC;
ctfsect.cts_data = mp->ctfdata;
ctfsect.cts_size = mp->ctfsize;
ctfsect.cts_entsize = 1;
ctfsect.cts_offset = 0;
symsect.cts_name = ".symtab";
symsect.cts_type = SHT_SYMTAB;
symsect.cts_flags = 0;
symsect.cts_data = mp->symtbl;
symsect.cts_size = mp->symhdr->sh_size;
#ifdef _LP64
symsect.cts_entsize = sizeof (Elf64_Sym);
#else
symsect.cts_entsize = sizeof (Elf32_Sym);
#endif
symsect.cts_offset = 0;
strsect.cts_name = ".strtab";
strsect.cts_type = SHT_STRTAB;
strsect.cts_flags = 0;
strsect.cts_data = mp->strings;
strsect.cts_size = mp->strhdr->sh_size;
strsect.cts_entsize = 1;
strsect.cts_offset = 0;
ASSERT(MUTEX_HELD(&mod_lock));
if ((fp = ctf_bufopen(&ctfsect, &symsect, &strsect, error)) == NULL)
return (NULL);
if (!ctf_leave_compressed && (caddr_t)fp->ctf_base != mp->ctfdata) {
/*
* We must have just uncompressed the CTF data. To avoid
* others having to pay the (substantial) cost of decompressing
* the data, we're going to substitute the uncompressed version
* for the compressed version. Note that this implies that the
* first CTF consumer will induce memory impact on the system
* (but in the name of performance of future CTF consumers).
*/
kobj_set_ctf(mp, (caddr_t)fp->ctf_base, fp->ctf_size);
fp->ctf_data.cts_data = fp->ctf_base;
fp->ctf_data.cts_size = fp->ctf_size;
}
return (fp);
}
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