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 /*
27 * Given a file containing sections with stabs data, convert the stabs data to
28 * CTF data, and replace the stabs sections with a CTF section.
29 */
30
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <unistd.h>
34 #include <signal.h>
35 #include <string.h>
36 #include <fcntl.h>
37 #include <libgen.h>
38 #include <errno.h>
39 #include <assert.h>
40
41 #include "ctftools.h"
42 #include "memory.h"
43
44 const char *progname;
45 int debug_level = DEBUG_LEVEL;
46
47 static const char *infile = NULL;
48 static const char *outfile = NULL;
49 static int dynsym;
50
51 static void
usage(void)52 usage(void)
53 {
54 (void) fprintf(stderr,
55 "Usage: %s [-is] -l label | -L labelenv [-o outfile] object_file\n"
56 "\n"
57 " Note: if -L labelenv is specified and labelenv is not set in\n"
58 " the environment, a default value is used.\n",
59 progname);
60 }
61
62 static void
terminate_cleanup(void)63 terminate_cleanup(void)
64 {
65 if (!outfile) {
66 fprintf(stderr, "Removing %s\n", infile);
67 unlink(infile);
68 }
69 }
70
71 static void
handle_sig(int sig)72 handle_sig(int sig)
73 {
74 terminate("Caught signal %d - exiting\n", sig);
75 }
76
77 static int
file_read(tdata_t * td,const char * filename,int ignore_non_c)78 file_read(tdata_t *td, const char *filename, int ignore_non_c)
79 {
80 typedef int (*reader_f)(tdata_t *, Elf *, const char *);
81 static const reader_f readers[] = {
82 stabs_read,
83 dw_read,
84 NULL
85 };
86
87 source_types_t source_types;
88 Elf *elf;
89 int i, rc, fd;
90
91 if ((fd = open(filename, O_RDONLY)) < 0)
92 terminate("failed to open %s", filename);
93
94 (void) elf_version(EV_CURRENT);
95
96 if ((elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
97 close(fd);
98 terminate("failed to read %s: %s\n", filename,
99 elf_errmsg(-1));
100 }
101
102 source_types = built_source_types(elf, filename);
103
104 if ((source_types == SOURCE_NONE || (source_types & SOURCE_UNKNOWN)) &&
105 ignore_non_c) {
106 debug(1, "Ignoring file %s from unknown sources\n", filename);
107 exit(0);
108 }
109
110 for (i = 0; readers[i] != NULL; i++) {
111 if ((rc = readers[i](td, elf, filename)) == 0)
112 break;
113
114 assert(rc < 0 && errno == ENOENT);
115 }
116
117 if (readers[i] == NULL) {
118 /*
119 * None of the readers found compatible type data.
120 */
121
122 if (findelfsecidx(elf, filename, ".debug") >= 0) {
123 terminate("%s: DWARF version 1 is not supported\n",
124 filename);
125 }
126
127 if (!(source_types & SOURCE_C) && ignore_non_c) {
128 debug(1, "Ignoring file %s not built from C sources\n",
129 filename);
130 exit(0);
131 }
132
133 rc = 0;
134 } else {
135 rc = 1;
136 }
137
138 (void) elf_end(elf);
139 (void) close(fd);
140
141 return (rc);
142 }
143
144 int
main(int argc,char ** argv)145 main(int argc, char **argv)
146 {
147 tdata_t *filetd, *mstrtd;
148 char *label = NULL;
149 int verbose = 0;
150 int ignore_non_c = 0;
151 int c;
152
153 sighold(SIGINT);
154 sighold(SIGQUIT);
155 sighold(SIGTERM);
156
157 progname = basename(argv[0]);
158
159 if (getenv("CTFCONVERT_DEBUG_LEVEL"))
160 debug_level = atoi(getenv("CTFCONVERT_DEBUG_LEVEL"));
161 if (getenv("CTFCONVERT_DEBUG_PARSE"))
162 debug_parse = atoi(getenv("CTFCONVERT_DEBUG_PARSE"));
163
164 while ((c = getopt(argc, argv, ":l:L:o:ivs")) != EOF) {
165 switch (c) {
166 case 'l':
167 label = optarg;
168 break;
169 case 'L':
170 if ((label = getenv(optarg)) == NULL)
171 label = CTF_DEFAULT_LABEL;
172 break;
173 case 'o':
174 outfile = optarg;
175 break;
176 case 's':
177 dynsym = CTF_USE_DYNSYM;
178 break;
179 case 'i':
180 ignore_non_c = 1;
181 break;
182 case 'v':
183 verbose = 1;
184 break;
185 default:
186 usage();
187 exit(2);
188 }
189 }
190
191 if (argc - optind != 1 || label == NULL) {
192 usage();
193 exit(2);
194 }
195
196 infile = argv[optind];
197 if (access(infile, R_OK) != 0)
198 terminate("Can't access %s", infile);
199
200 /*
201 * Upon receipt of a signal, we want to clean up and exit. Our
202 * primary goal during cleanup is to restore the system to a state
203 * such that a subsequent make will eventually cause this command to
204 * be re-run. If we remove the input file (which we do if we get a
205 * signal and the user didn't specify a separate output file), make
206 * will need to rebuild the input file, and will then need to re-run
207 * ctfconvert, which is what we want.
208 */
209 set_terminate_cleanup(terminate_cleanup);
210
211 sigset(SIGINT, handle_sig);
212 sigset(SIGQUIT, handle_sig);
213 sigset(SIGTERM, handle_sig);
214
215 filetd = tdata_new();
216
217 if (!file_read(filetd, infile, ignore_non_c))
218 terminate("%s doesn't have type data to convert\n", infile);
219
220 if (verbose)
221 iidesc_stats(filetd->td_iihash);
222
223 mstrtd = tdata_new();
224 merge_into_master(filetd, mstrtd, NULL, 1);
225
226 tdata_label_add(mstrtd, label, CTF_LABEL_LASTIDX);
227
228 /*
229 * If the user supplied an output file that is different from the
230 * input file, write directly to the output file. Otherwise, write
231 * to a temporary file, and replace the input file when we're done.
232 */
233 if (outfile && strcmp(infile, outfile) != 0) {
234 write_ctf(mstrtd, infile, outfile, dynsym);
235 } else {
236 char *tmpname = mktmpname(infile, ".ctf");
237
238 write_ctf(mstrtd, infile, tmpname, dynsym);
239 if (rename(tmpname, infile) != 0)
240 terminate("Couldn't rename temp file %s", tmpname);
241 free(tmpname);
242 }
243
244 return (0);
245 }
246