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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * Given a file containing sections with stabs data, convert the stabs data to 30 * CTF data, and replace the stabs sections with a CTF section. 31 */ 32 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <unistd.h> 36 #include <signal.h> 37 #include <string.h> 38 #include <fcntl.h> 39 #include <libgen.h> 40 #include <errno.h> 41 #include <assert.h> 42 43 #include "ctftools.h" 44 #include "memory.h" 45 46 const char *progname; 47 int debug_level = DEBUG_LEVEL; 48 49 static char *infile = NULL; 50 static const char *outfile = NULL; 51 static int dynsym; 52 53 static void 54 usage(void) 55 { 56 (void) fprintf(stderr, 57 "Usage: %s [-gis] -l label | -L labelenv [-o outfile] object_file\n" 58 "\n" 59 " Note: if -L labelenv is specified and labelenv is not set in\n" 60 " the environment, a default value is used.\n", 61 progname); 62 } 63 64 static void 65 terminate_cleanup(void) 66 { 67 #if !defined(__FreeBSD__) 68 if (!outfile) { 69 fprintf(stderr, "Removing %s\n", infile); 70 unlink(infile); 71 } 72 #endif 73 } 74 75 static void 76 handle_sig(int sig) 77 { 78 terminate("Caught signal %d - exiting\n", sig); 79 } 80 81 static int 82 file_read(tdata_t *td, char *filename, int ignore_non_c) 83 { 84 typedef int (*reader_f)(tdata_t *, Elf *, char *); 85 static reader_f readers[] = { 86 dw_read, 87 NULL 88 }; 89 90 source_types_t source_types; 91 Elf *elf; 92 int i, rc, fd; 93 94 if ((fd = open(filename, O_RDONLY)) < 0) 95 terminate("failed to open %s", filename); 96 97 (void) elf_version(EV_CURRENT); 98 99 if ((elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) { 100 close(fd); 101 terminate("failed to read %s: %s\n", filename, 102 elf_errmsg(-1)); 103 } 104 105 source_types = built_source_types(elf, filename); 106 107 if ((source_types == SOURCE_NONE || (source_types & SOURCE_UNKNOWN)) && 108 ignore_non_c) { 109 debug(1, "Ignoring file %s from unknown sources\n", filename); 110 exit(0); 111 } 112 113 for (i = 0; readers[i] != NULL; i++) { 114 if ((rc = readers[i](td, elf, filename)) == 0) 115 break; 116 117 assert(rc < 0 && errno == ENOENT); 118 } 119 120 if (readers[i] == NULL) { 121 /* 122 * None of the readers found compatible type data. 123 */ 124 125 if (findelfsecidx(elf, filename, ".debug") >= 0) { 126 terminate("%s: DWARF version 1 is not supported\n", 127 filename); 128 } 129 130 if (!(source_types & SOURCE_C) && ignore_non_c) { 131 debug(1, "Ignoring file %s not built from C sources\n", 132 filename); 133 exit(0); 134 } 135 136 rc = 0; 137 } else { 138 rc = 1; 139 } 140 141 (void) elf_end(elf); 142 (void) close(fd); 143 144 return (rc); 145 } 146 147 int 148 main(int argc, char **argv) 149 { 150 tdata_t *filetd, *mstrtd; 151 const char *label = NULL; 152 int verbose = 0; 153 int ignore_non_c = 0; 154 int keep_stabs = 0; 155 int c; 156 157 #ifdef illumos 158 sighold(SIGINT); 159 sighold(SIGQUIT); 160 sighold(SIGTERM); 161 #endif 162 163 progname = basename(argv[0]); 164 165 if (getenv("CTFCONVERT_DEBUG_LEVEL")) 166 debug_level = atoi(getenv("CTFCONVERT_DEBUG_LEVEL")); 167 168 while ((c = getopt(argc, argv, ":l:L:o:givs")) != EOF) { 169 switch (c) { 170 case 'l': 171 label = optarg; 172 break; 173 case 'L': 174 if ((label = getenv(optarg)) == NULL) 175 label = CTF_DEFAULT_LABEL; 176 break; 177 case 'o': 178 outfile = optarg; 179 break; 180 case 's': 181 dynsym = CTF_USE_DYNSYM; 182 break; 183 case 'i': 184 ignore_non_c = 1; 185 break; 186 case 'g': 187 keep_stabs = CTF_KEEP_STABS; 188 break; 189 case 'v': 190 verbose = 1; 191 break; 192 default: 193 usage(); 194 exit(2); 195 } 196 } 197 198 if (getenv("STRIPSTABS_KEEP_STABS") != NULL) 199 keep_stabs = CTF_KEEP_STABS; 200 201 if (argc - optind != 1 || label == NULL) { 202 usage(); 203 exit(2); 204 } 205 206 infile = argv[optind]; 207 if (access(infile, R_OK) != 0) 208 terminate("Can't access %s", infile); 209 210 /* 211 * Upon receipt of a signal, we want to clean up and exit. Our 212 * primary goal during cleanup is to restore the system to a state 213 * such that a subsequent make will eventually cause this command to 214 * be re-run. If we remove the input file (which we do if we get a 215 * signal and the user didn't specify a separate output file), make 216 * will need to rebuild the input file, and will then need to re-run 217 * ctfconvert, which is what we want. 218 */ 219 set_terminate_cleanup(terminate_cleanup); 220 221 #ifdef illumos 222 sigset(SIGINT, handle_sig); 223 sigset(SIGQUIT, handle_sig); 224 sigset(SIGTERM, handle_sig); 225 #else 226 signal(SIGINT, handle_sig); 227 signal(SIGQUIT, handle_sig); 228 signal(SIGTERM, handle_sig); 229 #endif 230 231 filetd = tdata_new(); 232 233 if (!file_read(filetd, infile, ignore_non_c)) 234 terminate("%s doesn't have type data to convert\n", infile); 235 236 if (verbose) 237 iidesc_stats(filetd->td_iihash); 238 239 mstrtd = tdata_new(); 240 merge_into_master(filetd, mstrtd, NULL, 1); 241 242 tdata_label_add(mstrtd, label, CTF_LABEL_LASTIDX); 243 244 /* 245 * If the user supplied an output file that is different from the 246 * input file, write directly to the output file. Otherwise, write 247 * to a temporary file, and replace the input file when we're done. 248 */ 249 if (outfile && strcmp(infile, outfile) != 0) { 250 write_ctf(mstrtd, infile, outfile, dynsym | keep_stabs); 251 } else { 252 char *tmpname = mktmpname(infile, ".ctf"); 253 write_ctf(mstrtd, infile, tmpname, dynsym | keep_stabs); 254 if (rename(tmpname, infile) != 0) 255 terminate("Couldn't rename temp file %s", tmpname); 256 free(tmpname); 257 } 258 259 return (0); 260 } 261