1 /* Dump information generated by PC profiling.
2 Copyright (C) 1999, 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 /* This is mainly an example. It shows how programs which want to use
22 the information should read the file. */
38 #include "../version.h"
42 # define _(Str) gettext (Str)
49 /* Definitions of arguments for argp functions. */
50 static const struct argp_option options[] =
52 { "unbuffered", 'u', NULL, 0, N_("Don't buffer output") },
53 { NULL, 0, NULL, 0, NULL }
56 /* Short description of program. */
57 static const char doc[] = N_("Dump information generated by PC profiling.");
59 /* Strings for arguments in help texts. */
60 static const char args_doc[] = N_("[FILE]");
62 /* Function to print some extra text in the help message. */
63 static char *more_help (int key, const char *text, void *input);
65 /* Prototype for option handler. */
66 static error_t parse_opt (int key, char *arg, struct argp_state *state);
68 /* Data structure to communicate with argp functions. */
69 static struct argp argp =
71 options, parse_opt, args_doc, doc, NULL, more_help
76 main (int argc, char *argv[])
83 /* Parse and process arguments. */
84 argp_parse (&argp, argc, argv, 0, &remaining, NULL);
86 if (remaining == argc)
88 else if (remaining + 1 != argc)
90 argp_help (&argp, stdout, ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR,
91 program_invocation_short_name);
96 /* Open the given file. */
97 fd = open (argv[remaining], O_RDONLY);
100 error (EXIT_FAILURE, errno, _("cannot open input file"));
103 /* Read the first 4-byte word. It contains the information about
104 the word size and the endianess. */
105 if (TEMP_FAILURE_RETRY (read (fd, &word, 4)) != 4)
106 error (EXIT_FAILURE, errno, _("cannot read header"));
108 /* Check whether we have to swap the byte order. */
109 must_swap = (word & 0xfffffff0) == bswap_32 (0xdeb00000);
111 word = bswap_32 (word);
113 /* We have two loops, one for 32 bit pointers, one for 64 bit pointers. */
114 if (word == 0xdeb00004)
124 size_t len = sizeof (pair);
128 && (n = TEMP_FAILURE_RETRY (read (fd, &pair.bytes[8 - len],
133 /* Nothing to read. */
136 printf ("this = %#010" PRIx32 ", caller = %#010" PRIx32 "\n",
137 must_swap ? bswap_32 (pair.ptrs[0]) : pair.ptrs[0],
138 must_swap ? bswap_32 (pair.ptrs[1]) : pair.ptrs[1]);
141 else if (word == 0xdeb00008)
151 size_t len = sizeof (pair);
155 && (n = TEMP_FAILURE_RETRY (read (fd, &pair.bytes[8 - len],
160 /* Nothing to read. */
163 printf ("this = %#018" PRIx64 ", caller = %#018" PRIx64 "\n",
164 must_swap ? bswap_64 (pair.ptrs[0]) : pair.ptrs[0],
165 must_swap ? bswap_64 (pair.ptrs[1]) : pair.ptrs[1]);
169 /* This should not happen. */
170 error (EXIT_FAILURE, 0, _("invalid pointer size"));
179 parse_opt (int key, char *arg, struct argp_state *state)
184 setbuf (stdout, NULL);
187 return ARGP_ERR_UNKNOWN;
193 more_help (int key, const char *text, void *input)
197 case ARGP_KEY_HELP_EXTRA:
198 /* We print some extra information. */
199 return strdup (gettext ("\
200 Report bugs using the `glibcbug' script to <bugs@gnu.org>.\n"));
204 return (char *) text;