[ec24a37] | 1 | /* |
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[7461924] | 2 | * Copyright (c) 2011-2012, Chris Johns <chrisj@rtems.org> |
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[ec24a37] | 3 | * |
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| 4 | * Permission to use, copy, modify, and/or distribute this software for any |
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| 5 | * purpose with or without fee is hereby granted, provided that the above |
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| 6 | * copyright notice and this permission notice appear in all copies. |
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[aef6d90] | 7 | * |
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[ec24a37] | 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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| 15 | */ |
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| 16 | /** |
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| 17 | * @file |
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| 18 | * |
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| 19 | * @ingroup rtems_rld |
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| 20 | * |
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[977c3de] | 21 | * @brief RTEMS Symbols Main manages opions, sequence of operations and exceptions. |
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[ec24a37] | 22 | * |
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| 23 | */ |
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| 24 | |
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| 25 | #if HAVE_CONFIG_H |
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| 26 | #include "config.h" |
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| 27 | #endif |
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| 28 | |
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| 29 | #include <iostream> |
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| 30 | |
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| 31 | #include <cxxabi.h> |
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| 32 | #include <signal.h> |
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| 33 | #include <stdlib.h> |
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| 34 | #include <string.h> |
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| 35 | #include <unistd.h> |
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| 36 | |
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| 37 | #include <getopt.h> |
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| 38 | |
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| 39 | #include <rld.h> |
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[7461924] | 40 | #include <rld-cc.h> |
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[ec24a37] | 41 | #include <rld-outputter.h> |
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| 42 | #include <rld-process.h> |
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| 43 | #include <rld-resolver.h> |
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| 44 | |
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| 45 | #ifndef HAVE_KILL |
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| 46 | #define kill(p,s) raise(s) |
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| 47 | #endif |
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| 48 | |
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| 49 | /** |
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[7461924] | 50 | * RTEMS Linker options. This needs to be rewritten to be like cc where only a |
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[ec24a37] | 51 | * single '-' and long options is present. |
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| 52 | */ |
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| 53 | static struct option rld_opts[] = { |
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| 54 | { "help", no_argument, NULL, 'h' }, |
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| 55 | { "version", no_argument, NULL, 'V' }, |
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| 56 | { "verbose", no_argument, NULL, 'v' }, |
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| 57 | { "warn", no_argument, NULL, 'w' }, |
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| 58 | { "lib-path", required_argument, NULL, 'L' }, |
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| 59 | { "lib", required_argument, NULL, 'l' }, |
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| 60 | { "no-stdlibs", no_argument, NULL, 'n' }, |
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[7461924] | 61 | { "cc", required_argument, NULL, 'C' }, |
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| 62 | { "exec-prefix", required_argument, NULL, 'E' }, |
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| 63 | { "march", required_argument, NULL, 'a' }, |
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| 64 | { "mcpu", required_argument, NULL, 'c' }, |
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[ec24a37] | 65 | { NULL, 0, NULL, 0 } |
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| 66 | }; |
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| 67 | |
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| 68 | void |
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| 69 | usage (int exit_code) |
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| 70 | { |
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[977c3de] | 71 | std::cout << "rtems-syms [options] objects" << std::endl |
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[aef6d90] | 72 | << "Options and arguments:" << std::endl |
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| 73 | << " -h : help (also --help)" << std::endl |
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| 74 | << " -V : print linker version number and exit (also --version)" << std::endl |
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[6c4218b] | 75 | << " -v : verbose (trace import parts), can supply multiple times" << std::endl |
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[aef6d90] | 76 | << " to increase verbosity (also --verbose)" << std::endl |
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| 77 | << " -w : generate warnings (also --warn)" << std::endl |
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| 78 | << " -L path : path to a library, add multiple for more than" << std::endl |
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| 79 | << " one path (also --lib-path)" << std::endl |
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| 80 | << " -l lib : add lib to the libraries searched, add multiple" << std::endl |
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| 81 | << " for more than one library (also --lib)" << std::endl |
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[977c3de] | 82 | << " -S : search standard libraries (also --stdlibs)" << std::endl |
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[7461924] | 83 | << " -C file : execute file as the target C compiler (also --cc)" << std::endl |
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| 84 | << " -E prefix : the RTEMS tool prefix (also --exec-prefix)" << std::endl |
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| 85 | << " -a march : machine architecture (also --march)" << std::endl |
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| 86 | << " -c cpu : machine architecture's CPU (also --mcpu)" << std::endl; |
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[ec24a37] | 87 | ::exit (exit_code); |
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| 88 | } |
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| 89 | |
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| 90 | static void |
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| 91 | fatal_signal (int signum) |
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| 92 | { |
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| 93 | signal (signum, SIG_DFL); |
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| 94 | |
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[a136346] | 95 | rld::process::temporaries_clean_up (); |
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[ec24a37] | 96 | |
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[aef6d90] | 97 | /* |
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[ec24a37] | 98 | * Get the same signal again, this time not handled, so its normal effect |
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[aef6d90] | 99 | * occurs. |
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[ec24a37] | 100 | */ |
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| 101 | kill (getpid (), signum); |
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| 102 | } |
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| 103 | |
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| 104 | static void |
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| 105 | setup_signals (void) |
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| 106 | { |
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| 107 | if (signal (SIGINT, SIG_IGN) != SIG_IGN) |
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| 108 | signal (SIGINT, fatal_signal); |
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| 109 | #ifdef SIGHUP |
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| 110 | if (signal (SIGHUP, SIG_IGN) != SIG_IGN) |
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| 111 | signal (SIGHUP, fatal_signal); |
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| 112 | #endif |
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| 113 | if (signal (SIGTERM, SIG_IGN) != SIG_IGN) |
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| 114 | signal (SIGTERM, fatal_signal); |
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| 115 | #ifdef SIGPIPE |
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| 116 | if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) |
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| 117 | signal (SIGPIPE, fatal_signal); |
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| 118 | #endif |
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| 119 | #ifdef SIGCHLD |
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| 120 | signal (SIGCHLD, SIG_DFL); |
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| 121 | #endif |
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| 122 | } |
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| 123 | |
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| 124 | int |
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| 125 | main (int argc, char* argv[]) |
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| 126 | { |
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| 127 | int ec = 0; |
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| 128 | |
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| 129 | setup_signals (); |
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| 130 | |
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| 131 | try |
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| 132 | { |
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| 133 | rld::files::cache cache; |
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| 134 | rld::files::paths libpaths; |
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| 135 | rld::files::paths libs; |
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| 136 | rld::files::paths objects; |
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| 137 | rld::files::paths libraries; |
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| 138 | rld::symbols::table symbols; |
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| 139 | std::string base_name; |
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[7461924] | 140 | std::string cc_name; |
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[977c3de] | 141 | bool standard_libs = false; |
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[ec24a37] | 142 | bool exec_prefix_set = false; |
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[9ba4e48] | 143 | #if HAVE_WARNINGS |
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[ec24a37] | 144 | bool warnings = false; |
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[9ba4e48] | 145 | #endif |
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[ec24a37] | 146 | |
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| 147 | libpaths.push_back ("."); |
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| 148 | |
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| 149 | while (true) |
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| 150 | { |
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[977c3de] | 151 | int opt = ::getopt_long (argc, argv, "hvwVSE:L:l:a:c:C:", rld_opts, NULL); |
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[ec24a37] | 152 | if (opt < 0) |
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| 153 | break; |
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[aef6d90] | 154 | |
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[ec24a37] | 155 | switch (opt) |
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| 156 | { |
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| 157 | case 'V': |
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[977c3de] | 158 | std::cout << "rtems-syms (RTEMS Symbols) " << rld::version () |
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[ec24a37] | 159 | << std::endl; |
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| 160 | ::exit (0); |
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| 161 | break; |
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[aef6d90] | 162 | |
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[ec24a37] | 163 | case 'v': |
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| 164 | rld::verbose_inc (); |
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| 165 | break; |
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[aef6d90] | 166 | |
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[ec24a37] | 167 | case 'w': |
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[9ba4e48] | 168 | #if HAVE_WARNINGS |
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[ec24a37] | 169 | warnings = true; |
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[9ba4e48] | 170 | #endif |
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[ec24a37] | 171 | break; |
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| 172 | |
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| 173 | case 'l': |
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| 174 | /* |
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| 175 | * The order is important. It is the search order. |
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| 176 | */ |
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| 177 | libs.push_back (optarg); |
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| 178 | break; |
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| 179 | |
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| 180 | case 'L': |
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| 181 | if ((optarg[::strlen (optarg) - 1] == '/') || |
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| 182 | (optarg[::strlen (optarg) - 1] == '\\')) |
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| 183 | optarg[::strlen (optarg) - 1] = '\0'; |
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| 184 | libpaths.push_back (optarg); |
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| 185 | break; |
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| 186 | |
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[977c3de] | 187 | case 'S': |
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| 188 | standard_libs = true; |
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[ec24a37] | 189 | break; |
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| 190 | |
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[7461924] | 191 | case 'C': |
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| 192 | if (exec_prefix_set == true) |
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| 193 | std::cerr << "warning: exec-prefix ignored when CC provided" << std::endl; |
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| 194 | rld::cc::cc = optarg; |
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| 195 | break; |
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| 196 | |
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[ec24a37] | 197 | case 'E': |
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| 198 | exec_prefix_set = true; |
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[7461924] | 199 | rld::cc::exec_prefix = optarg; |
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[ec24a37] | 200 | break; |
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| 201 | |
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| 202 | case 'a': |
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[7461924] | 203 | rld::cc::march = optarg; |
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[ec24a37] | 204 | break; |
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| 205 | |
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| 206 | case 'c': |
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[7461924] | 207 | rld::cc::mcpu = optarg; |
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[ec24a37] | 208 | break; |
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| 209 | |
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| 210 | case '?': |
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| 211 | usage (3); |
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| 212 | break; |
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| 213 | |
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| 214 | case 'h': |
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| 215 | usage (0); |
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| 216 | break; |
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| 217 | } |
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| 218 | } |
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| 219 | |
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| 220 | argc -= optind; |
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| 221 | argv += optind; |
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| 222 | |
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[977c3de] | 223 | std::cout << "RTEMS Symbols " << rld::version () << std::endl; |
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[ec24a37] | 224 | |
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| 225 | /* |
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| 226 | * If there are no object files there is nothing to link. |
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| 227 | */ |
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[977c3de] | 228 | if (argc == 0) |
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[ec24a37] | 229 | throw rld::error ("no object files", "options"); |
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| 230 | |
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| 231 | /* |
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| 232 | * Load the remaining command line arguments into the cache as object |
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| 233 | * files. |
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| 234 | */ |
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| 235 | while (argc--) |
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| 236 | objects.push_back (*argv++); |
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[aef6d90] | 237 | |
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[ec24a37] | 238 | /* |
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| 239 | * Add the object files to the cache. |
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| 240 | */ |
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| 241 | cache.add (objects); |
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| 242 | |
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| 243 | /* |
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| 244 | * Open the cache. |
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| 245 | */ |
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| 246 | cache.open (); |
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| 247 | |
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| 248 | /* |
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[7461924] | 249 | * If the full path to CC is not provided and the exec-prefix is not set by |
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| 250 | * the command line see if it can be detected from the object file |
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| 251 | * types. This must be after we have added the object files because they |
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| 252 | * are used when detecting. |
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[ec24a37] | 253 | */ |
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[7461924] | 254 | if (rld::cc::cc.empty () && !exec_prefix_set) |
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| 255 | rld::cc::exec_prefix = rld::elf::machine_type (); |
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[ec24a37] | 256 | |
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| 257 | /* |
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| 258 | * Get the standard library paths |
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| 259 | */ |
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[9b66527] | 260 | if (standard_libs) |
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| 261 | rld::cc::get_standard_libpaths (libpaths); |
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[ec24a37] | 262 | |
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| 263 | /* |
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| 264 | * Get the command line libraries. |
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| 265 | */ |
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| 266 | rld::files::find_libraries (libraries, libpaths, libs); |
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| 267 | |
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| 268 | /* |
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| 269 | * Are we to load standard libraries ? |
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| 270 | */ |
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| 271 | if (standard_libs) |
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[7461924] | 272 | rld::cc::get_standard_libs (libraries, libpaths); |
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[ec24a37] | 273 | |
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| 274 | /* |
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| 275 | * Load the library to the cache. |
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| 276 | */ |
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| 277 | cache.add_libraries (libraries); |
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| 278 | |
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| 279 | /* |
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[8190102] | 280 | * Begin the archive session. This opens the archives and leaves them open |
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| 281 | * while we the symbol table is being used. The symbols reference object |
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| 282 | * files and the object files may reference archives and it is assumed they |
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| 283 | * are open and available. It is also assumed the number of library |
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| 284 | * archives being managed is less than the maximum file handles this |
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| 285 | * process can have open at any one time. If this is not the case this |
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| 286 | * approach would need to be reconsidered and the overhead of opening and |
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| 287 | * closing archives added. |
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[ec24a37] | 288 | */ |
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[8190102] | 289 | try |
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| 290 | { |
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| 291 | /* |
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| 292 | * Load the symbol table. |
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| 293 | */ |
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| 294 | cache.load_symbols (symbols); |
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| 295 | |
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| 296 | rld::map (cache, symbols); |
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| 297 | } |
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| 298 | catch (...) |
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| 299 | { |
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| 300 | cache.archives_end (); |
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| 301 | throw; |
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| 302 | } |
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[ec24a37] | 303 | |
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[8190102] | 304 | cache.archives_end (); |
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[ec24a37] | 305 | } |
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| 306 | catch (rld::error re) |
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| 307 | { |
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| 308 | std::cerr << "error: " |
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| 309 | << re.where << ": " << re.what |
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| 310 | << std::endl; |
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| 311 | ec = 10; |
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| 312 | } |
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| 313 | catch (std::exception e) |
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[aef6d90] | 314 | { |
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[ec24a37] | 315 | int status; |
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| 316 | char* realname; |
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| 317 | realname = abi::__cxa_demangle (e.what(), 0, 0, &status); |
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[977c3de] | 318 | std::cerr << "error: exception: " << realname << " ["; |
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[ec24a37] | 319 | ::free (realname); |
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| 320 | const std::type_info &ti = typeid (e); |
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| 321 | realname = abi::__cxa_demangle (ti.name(), 0, 0, &status); |
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| 322 | std::cerr << realname << "] " << e.what () << std::endl; |
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| 323 | ::free (realname); |
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| 324 | ec = 11; |
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| 325 | } |
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| 326 | catch (...) |
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[aef6d90] | 327 | { |
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[ec24a37] | 328 | /* |
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| 329 | * Helps to know if this happens. |
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| 330 | */ |
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| 331 | std::cout << "error: unhandled exception" << std::endl; |
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| 332 | ec = 12; |
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| 333 | } |
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| 334 | |
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| 335 | return ec; |
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| 336 | } |
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