1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate #include <sys/sysmacros.h> 30*0Sstevel@tonic-gate #include <sys/modctl.h> 31*0Sstevel@tonic-gate #include <sys/debug.h> 32*0Sstevel@tonic-gate #include <sys/mman.h> 33*0Sstevel@tonic-gate #include <sys/modctl.h> 34*0Sstevel@tonic-gate #include <sys/kobj.h> 35*0Sstevel@tonic-gate #include <ctf_impl.h> 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate int ctf_leave_compressed = 0; 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate static struct modlmisc modlmisc = { 40*0Sstevel@tonic-gate &mod_miscops, "Compact C Type Format routines" 41*0Sstevel@tonic-gate }; 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate static struct modlinkage modlinkage = { 44*0Sstevel@tonic-gate MODREV_1, &modlmisc, NULL 45*0Sstevel@tonic-gate }; 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate int 48*0Sstevel@tonic-gate _init(void) 49*0Sstevel@tonic-gate { 50*0Sstevel@tonic-gate return (mod_install(&modlinkage)); 51*0Sstevel@tonic-gate } 52*0Sstevel@tonic-gate 53*0Sstevel@tonic-gate int 54*0Sstevel@tonic-gate _info(struct modinfo *mip) 55*0Sstevel@tonic-gate { 56*0Sstevel@tonic-gate return (mod_info(&modlinkage, mip)); 57*0Sstevel@tonic-gate } 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate int 60*0Sstevel@tonic-gate _fini(void) 61*0Sstevel@tonic-gate { 62*0Sstevel@tonic-gate return (mod_remove(&modlinkage)); 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /*ARGSUSED*/ 66*0Sstevel@tonic-gate void * 67*0Sstevel@tonic-gate ctf_zopen(int *errp) 68*0Sstevel@tonic-gate { 69*0Sstevel@tonic-gate return ((void *)1); /* zmod is always loaded because we depend on it */ 70*0Sstevel@tonic-gate } 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate /*ARGSUSED*/ 73*0Sstevel@tonic-gate const void * 74*0Sstevel@tonic-gate ctf_sect_mmap(ctf_sect_t *sp, int fd) 75*0Sstevel@tonic-gate { 76*0Sstevel@tonic-gate return (MAP_FAILED); /* we don't support this in the kernel */ 77*0Sstevel@tonic-gate } 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate /*ARGSUSED*/ 80*0Sstevel@tonic-gate void 81*0Sstevel@tonic-gate ctf_sect_munmap(const ctf_sect_t *sp) 82*0Sstevel@tonic-gate { 83*0Sstevel@tonic-gate /* we don't support this in the kernel */ 84*0Sstevel@tonic-gate } 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate /*ARGSUSED*/ 87*0Sstevel@tonic-gate ctf_file_t * 88*0Sstevel@tonic-gate ctf_fdopen(int fd, int *errp) 89*0Sstevel@tonic-gate { 90*0Sstevel@tonic-gate return (ctf_set_open_errno(errp, ENOTSUP)); 91*0Sstevel@tonic-gate } 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate /*ARGSUSED*/ 94*0Sstevel@tonic-gate ctf_file_t * 95*0Sstevel@tonic-gate ctf_open(const char *filename, int *errp) 96*0Sstevel@tonic-gate { 97*0Sstevel@tonic-gate return (ctf_set_open_errno(errp, ENOTSUP)); 98*0Sstevel@tonic-gate } 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate /*ARGSUSED*/ 101*0Sstevel@tonic-gate int 102*0Sstevel@tonic-gate ctf_write(ctf_file_t *fp, int fd) 103*0Sstevel@tonic-gate { 104*0Sstevel@tonic-gate return (ctf_set_errno(fp, ENOTSUP)); 105*0Sstevel@tonic-gate } 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate int 108*0Sstevel@tonic-gate ctf_version(int version) 109*0Sstevel@tonic-gate { 110*0Sstevel@tonic-gate ASSERT(version > 0 && version <= CTF_VERSION); 111*0Sstevel@tonic-gate 112*0Sstevel@tonic-gate if (version > 0) 113*0Sstevel@tonic-gate _libctf_version = MIN(CTF_VERSION, version); 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate return (_libctf_version); 116*0Sstevel@tonic-gate } 117*0Sstevel@tonic-gate 118*0Sstevel@tonic-gate /*ARGSUSED*/ 119*0Sstevel@tonic-gate ctf_file_t * 120*0Sstevel@tonic-gate ctf_modopen(struct module *mp, int *error) 121*0Sstevel@tonic-gate { 122*0Sstevel@tonic-gate ctf_sect_t ctfsect, symsect, strsect; 123*0Sstevel@tonic-gate ctf_file_t *fp = NULL; 124*0Sstevel@tonic-gate int err; 125*0Sstevel@tonic-gate 126*0Sstevel@tonic-gate if (error == NULL) 127*0Sstevel@tonic-gate error = &err; 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate ctfsect.cts_name = ".SUNW_ctf"; 130*0Sstevel@tonic-gate ctfsect.cts_type = SHT_PROGBITS; 131*0Sstevel@tonic-gate ctfsect.cts_flags = SHF_ALLOC; 132*0Sstevel@tonic-gate ctfsect.cts_data = mp->ctfdata; 133*0Sstevel@tonic-gate ctfsect.cts_size = mp->ctfsize; 134*0Sstevel@tonic-gate ctfsect.cts_entsize = 1; 135*0Sstevel@tonic-gate ctfsect.cts_offset = 0; 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate symsect.cts_name = ".symtab"; 138*0Sstevel@tonic-gate symsect.cts_type = SHT_SYMTAB; 139*0Sstevel@tonic-gate symsect.cts_flags = 0; 140*0Sstevel@tonic-gate symsect.cts_data = mp->symtbl; 141*0Sstevel@tonic-gate symsect.cts_size = mp->symhdr->sh_size; 142*0Sstevel@tonic-gate #ifdef _LP64 143*0Sstevel@tonic-gate symsect.cts_entsize = sizeof (Elf64_Sym); 144*0Sstevel@tonic-gate #else 145*0Sstevel@tonic-gate symsect.cts_entsize = sizeof (Elf32_Sym); 146*0Sstevel@tonic-gate #endif 147*0Sstevel@tonic-gate symsect.cts_offset = 0; 148*0Sstevel@tonic-gate 149*0Sstevel@tonic-gate strsect.cts_name = ".strtab"; 150*0Sstevel@tonic-gate strsect.cts_type = SHT_STRTAB; 151*0Sstevel@tonic-gate strsect.cts_flags = 0; 152*0Sstevel@tonic-gate strsect.cts_data = mp->strings; 153*0Sstevel@tonic-gate strsect.cts_size = mp->strhdr->sh_size; 154*0Sstevel@tonic-gate strsect.cts_entsize = 1; 155*0Sstevel@tonic-gate strsect.cts_offset = 0; 156*0Sstevel@tonic-gate 157*0Sstevel@tonic-gate ASSERT(MUTEX_HELD(&mod_lock)); 158*0Sstevel@tonic-gate 159*0Sstevel@tonic-gate if ((fp = ctf_bufopen(&ctfsect, &symsect, &strsect, error)) == NULL) 160*0Sstevel@tonic-gate return (NULL); 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate if (!ctf_leave_compressed && (caddr_t)fp->ctf_base != mp->ctfdata) { 163*0Sstevel@tonic-gate /* 164*0Sstevel@tonic-gate * We must have just uncompressed the CTF data. To avoid 165*0Sstevel@tonic-gate * others having to pay the (substantial) cost of decompressing 166*0Sstevel@tonic-gate * the data, we're going to substitute the uncompressed version 167*0Sstevel@tonic-gate * for the compressed version. Note that this implies that the 168*0Sstevel@tonic-gate * first CTF consumer will induce memory impact on the system 169*0Sstevel@tonic-gate * (but in the name of performance of future CTF consumers). 170*0Sstevel@tonic-gate */ 171*0Sstevel@tonic-gate kobj_set_ctf(mp, (caddr_t)fp->ctf_base, fp->ctf_size); 172*0Sstevel@tonic-gate fp->ctf_data.cts_data = fp->ctf_base; 173*0Sstevel@tonic-gate fp->ctf_data.cts_size = fp->ctf_size; 174*0Sstevel@tonic-gate } 175*0Sstevel@tonic-gate 176*0Sstevel@tonic-gate return (fp); 177*0Sstevel@tonic-gate } 178