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 const 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 (!outfile) {
68 fprintf(stderr, "Removing %s\n", infile);
69 unlink(infile);
70 }
71 }
72
73 static void
74 handle_sig(int sig)
75 {
76 terminate("Caught signal %d - exiting\n", sig);
77 }
78
79 static int
80 file_read(tdata_t *td, const char *filename, int ignore_non_c)
81 {
82 typedef int (*reader_f)(tdata_t *, Elf *, const char *);
83 static const reader_f readers[] = {
84 stabs_read,
85 dw_read,
86 NULL
87 };
88
89 source_types_t source_types;
90 Elf *elf;
91 int i, rc, fd;
92
93 if ((fd = open(filename, O_RDONLY)) < 0)
94 terminate("failed to open %s", filename);
95
96 (void) elf_version(EV_CURRENT);
97
98 if ((elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
99 close(fd);
100 terminate("failed to read %s: %s\n", filename,
101 elf_errmsg(-1));
102 }
103
104 source_types = built_source_types(elf, filename);
105
106 if ((source_types == SOURCE_NONE || (source_types & SOURCE_UNKNOWN)) &&
107 ignore_non_c) {
108 debug(1, "Ignoring file %s from unknown sources\n", filename);
109 exit(0);
110 }
111
112 for (i = 0; readers[i] != NULL; i++) {
113 if ((rc = readers[i](td, elf, filename)) == 0)
114 break;
115
116 assert(rc < 0 && errno == ENOENT);
117 }
118
119 if (readers[i] == NULL) {
120 /*
121 * None of the readers found compatible type data.
122 */
123
124 if (findelfsecidx(elf, filename, ".debug") >= 0) {
125 terminate("%s: DWARF version 1 is not supported\n",
126 filename);
127 }
128
129 if (!(source_types & SOURCE_C) && ignore_non_c) {
130 debug(1, "Ignoring file %s not built from C sources\n",
131 filename);
132 exit(0);
133 }
134
135 rc = 0;
136 } else {
137 rc = 1;
138 }
139
140 (void) elf_end(elf);
141 (void) close(fd);
142
143 return (rc);
144 }
145
146 int
147 main(int argc, char **argv)
148 {
149 tdata_t *filetd, *mstrtd;
150 char *label = NULL;
151 int verbose = 0;
152 int ignore_non_c = 0;
153 int keep_stabs = 0;
154 int c;
155
156 sighold(SIGINT);
157 sighold(SIGQUIT);
158 sighold(SIGTERM);
159
160 progname = basename(argv[0]);
161
162 if (getenv("CTFCONVERT_DEBUG_LEVEL"))
163 debug_level = atoi(getenv("CTFCONVERT_DEBUG_LEVEL"));
164 if (getenv("CTFCONVERT_DEBUG_PARSE"))
165 debug_parse = atoi(getenv("CTFCONVERT_DEBUG_PARSE"));
166
167 while ((c = getopt(argc, argv, ":l:L:o:givs")) != EOF) {
168 switch (c) {
169 case 'l':
170 label = optarg;
171 break;
172 case 'L':
173 if ((label = getenv(optarg)) == NULL)
174 label = CTF_DEFAULT_LABEL;
175 break;
176 case 'o':
177 outfile = optarg;
178 break;
179 case 's':
180 dynsym = CTF_USE_DYNSYM;
181 break;
182 case 'i':
183 ignore_non_c = 1;
184 break;
185 case 'g':
186 keep_stabs = CTF_KEEP_STABS;
187 break;
188 case 'v':
189 verbose = 1;
190 break;
191 default:
192 usage();
193 exit(2);
194 }
195 }
196
197 if (getenv("STRIPSTABS_KEEP_STABS") != NULL)
198 keep_stabs = CTF_KEEP_STABS;
199
200 if (argc - optind != 1 || label == NULL) {
201 usage();
202 exit(2);
203 }
204
205 infile = argv[optind];
206 if (access(infile, R_OK) != 0)
207 terminate("Can't access %s", infile);
208
209 /*
210 * Upon receipt of a signal, we want to clean up and exit. Our
211 * primary goal during cleanup is to restore the system to a state
212 * such that a subsequent make will eventually cause this command to
213 * be re-run. If we remove the input file (which we do if we get a
214 * signal and the user didn't specify a separate output file), make
215 * will need to rebuild the input file, and will then need to re-run
216 * ctfconvert, which is what we want.
217 */
218 set_terminate_cleanup(terminate_cleanup);
219
220 sigset(SIGINT, handle_sig);
221 sigset(SIGQUIT, handle_sig);
222 sigset(SIGTERM, handle_sig);
223
224 filetd = tdata_new();
225
226 if (!file_read(filetd, infile, ignore_non_c))
227 terminate("%s doesn't have type data to convert\n", infile);
228
229 if (verbose)
230 iidesc_stats(filetd->td_iihash);
231
232 mstrtd = tdata_new();
233 merge_into_master(filetd, mstrtd, NULL, 1);
234
235 tdata_label_add(mstrtd, label, CTF_LABEL_LASTIDX);
236
237 /*
238 * If the user supplied an output file that is different from the
239 * input file, write directly to the output file. Otherwise, write
240 * to a temporary file, and replace the input file when we're done.
241 */
242 if (outfile && strcmp(infile, outfile) != 0) {
243 write_ctf(mstrtd, infile, outfile, dynsym | keep_stabs);
244 } else {
245 char *tmpname = mktmpname(infile, ".ctf");
246
247 write_ctf(mstrtd, infile, tmpname, dynsym | keep_stabs);
248 if (rename(tmpname, infile) != 0)
249 terminate("Couldn't rename temp file %s", tmpname);
250 free(tmpname);
251 }
252
253 return (0);
254 }