[51b7345] | 1 | // -*- Mode: C++ -*- |
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| 2 | // |
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| 3 | // CForall Version 1.0, Copyright (C) Peter A. Buhr 2005 |
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| 4 | // |
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| 5 | // cc1.cc -- |
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| 6 | // |
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| 7 | // Author : Richard C. Bilson |
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| 8 | // Created On : Fri Aug 26 14:23:51 2005 |
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| 9 | // Last Modified By : Peter A. Buhr |
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[8c17ab0] | 10 | // Last Modified On : Wed Nov 12 22:58:59 2014 |
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| 11 | // Update Count : 5 |
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[51b7345] | 12 | // |
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| 13 | // This library is free software; you can redistribute it and/or modify it |
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| 14 | // under the terms of the GNU Lesser General Public License as published by the |
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| 15 | // Free Software Foundation; either version 2.1 of the License, or (at your |
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| 16 | // option) any later version. |
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| 17 | // |
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| 18 | // This library is distributed in the hope that it will be useful, but WITHOUT |
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| 19 | // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 20 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License |
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| 21 | // for more details. |
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| 22 | // |
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| 23 | // You should have received a copy of the GNU Lesser General Public License |
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| 24 | // along with this library. |
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| 25 | // |
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| 26 | |
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| 27 | |
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| 28 | #include <iostream> |
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| 29 | using std::cerr; |
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| 30 | using std::endl; |
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| 31 | #include <string> |
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| 32 | using std::string; |
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| 33 | #include <cstdio> // stderr, stdout, perror, fprintf |
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| 34 | #include <cstdlib> // getenv, exit, mkstemp |
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| 35 | #include <unistd.h> // execvp, fork, unlink |
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| 36 | #include <sys/wait.h> // wait |
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| 37 | |
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| 38 | #include "config.h" // configure info |
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| 39 | |
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| 40 | |
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| 41 | //#define __DEBUG_H__ |
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| 42 | |
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| 43 | |
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| 44 | string compiler_name( GCC_PATH ); // path/name of C compiler |
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| 45 | |
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| 46 | string D__GCC_BPREFIX__( "-D__GCC_BPREFIX__=" ); |
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| 47 | |
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| 48 | |
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| 49 | bool prefix( string arg, string pre ) { |
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| 50 | return arg.substr( 0, pre.size() ) == pre; |
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| 51 | } // prefix |
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| 52 | |
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| 53 | |
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| 54 | void checkEnv( const char *args[], int &nargs ) { |
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| 55 | char *value; |
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| 56 | |
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| 57 | value = getenv( "__COMPILER__" ); |
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| 58 | if ( value != NULL ) { |
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| 59 | compiler_name = value; |
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| 60 | #ifdef __DEBUG_H__ |
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| 61 | cerr << "env arg:\"" << compiler_name << "\"" << endl; |
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| 62 | #endif // __DEBUG_H__ |
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| 63 | } // if |
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| 64 | |
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| 65 | value = getenv( "__GCC_MACHINE__" ); |
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| 66 | if ( value != NULL ) { |
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| 67 | args[nargs] = ( *new string( value ) ).c_str(); // pass the argument along |
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| 68 | #ifdef __DEBUG_H__ |
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| 69 | cerr << "env arg:\"" << args[nargs] << "\"" << endl; |
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| 70 | #endif // __DEBUG_H__ |
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| 71 | nargs += 1; |
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| 72 | } // if |
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| 73 | |
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| 74 | value = getenv( "__GCC_VERSION__" ); |
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| 75 | if ( value != NULL ) { |
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| 76 | args[nargs] = ( *new string( value ) ).c_str(); // pass the argument along |
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| 77 | #ifdef __DEBUG_H__ |
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| 78 | cerr << "env arg:\"" << args[nargs] << "\"" << endl; |
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| 79 | #endif // __DEBUG_H__ |
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| 80 | nargs += 1; |
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| 81 | } // if |
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| 82 | } // checkEnv |
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| 83 | |
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| 84 | |
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| 85 | void Stage1( const int argc, const char * const argv[] ) { |
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| 86 | int code; |
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| 87 | int i; |
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| 88 | |
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| 89 | string arg; |
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| 90 | string bprefix; |
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| 91 | |
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| 92 | const char *cpp_in = NULL; |
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| 93 | const char *cpp_out = NULL; |
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| 94 | |
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| 95 | bool CFA_flag = false; |
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| 96 | bool cpp_flag = false; |
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| 97 | const char *o_name = NULL; |
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| 98 | |
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| 99 | const char *args[argc + 100]; // leave space for 100 additional cpp command line values |
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| 100 | int nargs = 1; // number of arguments in args list; 0 => command name |
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| 101 | const char *uargs[20]; // leave space for 20 additional cfa-cpp command line values |
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| 102 | int nuargs = 1; // 0 => command name |
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| 103 | |
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| 104 | // process all the arguments |
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| 105 | |
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| 106 | checkEnv( args, nargs ); // arguments passed via environment variables |
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| 107 | |
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| 108 | for ( i = 1; i < argc; i += 1 ) { |
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| 109 | #ifdef __DEBUG_H__ |
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| 110 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 111 | #endif // __DEBUG_H__ |
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| 112 | arg = argv[i]; |
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| 113 | #ifdef __DEBUG_H__ |
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| 114 | cerr << "arg:\"" << arg << "\"" << endl; |
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| 115 | #endif // __DEBUG_H__ |
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| 116 | if ( prefix( arg, "-" ) ) { |
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| 117 | // strip g++ flags that are inappropriate or cause duplicates in subsequent passes |
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| 118 | |
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| 119 | if ( arg == "-quiet" ) { |
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| 120 | } else if ( arg == "-imultilib" || arg == "-imultiarch" ) { |
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| 121 | i += 1; // and the argument |
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| 122 | } else if ( prefix( arg, "-A" ) ) { |
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| 123 | } else if ( prefix( arg, "-D__GNU" ) ) { |
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| 124 | //******** |
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| 125 | // GCC 5.6.0 SEPARATED THE -D FROM THE ARGUMENT! |
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| 126 | //******** |
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| 127 | } else if ( arg == "-D" && prefix( argv[i + 1], "__GNU" ) ) { |
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| 128 | i += 1; // and the argument |
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| 129 | |
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| 130 | // strip cfa flags controlling cpp step |
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| 131 | |
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| 132 | } else if ( arg == "-D__CFA__" ) { |
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| 133 | CFA_flag = true; |
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| 134 | } else if ( arg == "-D" && string( argv[i + 1] ) == "__CFA__" ) { |
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| 135 | i += 1; // and the argument |
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| 136 | CFA_flag = true; |
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| 137 | } else if ( arg == "-D__CPP__" ) { |
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| 138 | cpp_flag = true; |
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| 139 | } else if ( arg == "-D" && string( argv[i + 1] ) == "__CPP__" ) { |
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| 140 | i += 1; // and the argument |
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| 141 | cpp_flag = true; |
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| 142 | } else if ( prefix( arg, D__GCC_BPREFIX__ ) ) { |
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| 143 | bprefix = arg.substr( D__GCC_BPREFIX__.size() ); |
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| 144 | } else if ( arg == "-D" && prefix( argv[i + 1], "__GCC_BPREFIX__=" ) ) { |
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| 145 | bprefix = string( argv[i + 1] ).substr( D__GCC_BPREFIX__.size() - 2 ); |
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| 146 | i += 1; // and the argument |
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| 147 | |
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| 148 | // all other flags |
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| 149 | |
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| 150 | } else if ( arg == "-o" ) { |
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| 151 | i += 1; |
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| 152 | o_name = argv[i]; |
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| 153 | } else { |
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| 154 | args[nargs] = argv[i]; // pass the flag along |
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| 155 | nargs += 1; |
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| 156 | // CPP flags with an argument |
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| 157 | if ( arg == "-D" || arg == "-I" || arg == "-MF" || arg == "-MT" || arg == "-MQ" || |
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| 158 | arg == "-include" || arg == "-imacros" || arg == "-idirafter" || arg == "-iprefix" || |
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| 159 | arg == "-iwithprefix" || arg == "-iwithprefixbefore" || arg == "-isystem" || arg == "-isysroot" ) { |
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| 160 | i += 1; |
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| 161 | args[nargs] = argv[i]; // pass the argument along |
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| 162 | nargs += 1; |
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| 163 | #ifdef __DEBUG_H__ |
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| 164 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 165 | #endif // __DEBUG_H__ |
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| 166 | } else if ( arg == "-MD" || arg == "-MMD" ) { |
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| 167 | args[nargs] = "-MF"; // insert before file |
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| 168 | nargs += 1; |
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| 169 | i += 1; |
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| 170 | args[nargs] = argv[i]; // pass the argument along |
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| 171 | nargs += 1; |
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| 172 | #ifdef __DEBUG_H__ |
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| 173 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 174 | #endif // __DEBUG_H__ |
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| 175 | } // if |
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| 176 | } // if |
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| 177 | } else { // obtain input and possibly output files |
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| 178 | if ( cpp_in == NULL ) { |
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| 179 | cpp_in = argv[i]; |
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| 180 | #ifdef __DEBUG_H__ |
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| 181 | cerr << "cpp_in:\"" << cpp_in << "\"" << endl; |
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| 182 | #endif // __DEBUG_H__ |
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| 183 | } else if ( cpp_out == NULL ) { |
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| 184 | cpp_out = argv[i]; |
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| 185 | #ifdef __DEBUG_H__ |
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| 186 | cerr << "cpp_out:\"" << cpp_out << "\""<< endl; |
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| 187 | #endif // __DEBUG_H__ |
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| 188 | } else { |
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| 189 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl; |
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| 190 | exit( EXIT_FAILURE ); |
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| 191 | } // if |
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| 192 | } // if |
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| 193 | } // for |
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| 194 | |
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| 195 | #ifdef __DEBUG_H__ |
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| 196 | cerr << "args:"; |
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| 197 | for ( i = 1; i < nargs; i += 1 ) { |
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| 198 | cerr << " " << args[i]; |
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| 199 | } // for |
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| 200 | if ( cpp_in != NULL ) cerr << " " << cpp_in; |
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| 201 | if ( cpp_out != NULL ) cerr << " " << cpp_out; |
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| 202 | cerr << endl; |
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| 203 | #endif // __DEBUG_H__ |
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| 204 | |
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| 205 | if ( cpp_in == NULL ) { |
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| 206 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl; |
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| 207 | exit( EXIT_FAILURE ); |
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| 208 | } // if |
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| 209 | |
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| 210 | if ( cpp_flag ) { |
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| 211 | // The -E flag is specified on the cfa command so only run the preprocessor and output is written to standard |
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| 212 | // output or -o. The call to cfa has a -E so it does not have to be added to the argument list. |
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| 213 | |
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| 214 | args[0] = compiler_name.c_str(); |
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| 215 | args[nargs] = cpp_in; |
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| 216 | nargs += 1; |
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| 217 | if ( o_name != NULL ) { // location for output |
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| 218 | args[nargs] = "-o"; |
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| 219 | nargs += 1; |
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| 220 | args[nargs] = o_name; |
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| 221 | nargs += 1; |
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| 222 | } // if |
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| 223 | args[nargs] = NULL; // terminate argument list |
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| 224 | |
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| 225 | #ifdef __DEBUG_H__ |
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| 226 | cerr << "nargs: " << nargs << endl; |
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| 227 | for ( i = 0; args[i] != NULL; i += 1 ) { |
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| 228 | cerr << args[i] << " "; |
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| 229 | } // for |
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| 230 | cerr << endl; |
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| 231 | #endif // __DEBUG_H__ |
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| 232 | |
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| 233 | execvp( args[0], (char *const *)args ); // should not return |
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| 234 | perror( "CFA Translator error: cpp level, execvp" ); |
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| 235 | exit( EXIT_FAILURE ); |
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| 236 | } // if |
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| 237 | |
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| 238 | // Create a temporary file to store output of the C preprocessor. |
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| 239 | |
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| 240 | char tmpname[] = P_tmpdir "/CFAXXXXXX"; |
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| 241 | int tmpfile = mkstemp( tmpname ); |
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| 242 | if ( tmpfile == -1 ) { |
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| 243 | perror( "CFA Translator error: cpp level, mkstemp" ); |
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| 244 | exit( EXIT_FAILURE ); |
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| 245 | } // if |
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| 246 | |
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| 247 | #ifdef __DEBUG_H__ |
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| 248 | cerr << "tmpname:" << tmpname << " tmpfile:" << tmpfile << endl; |
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| 249 | #endif // __DEBUG_H__ |
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| 250 | |
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| 251 | // Run the C preprocessor and save the output in tmpfile. |
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| 252 | |
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| 253 | if ( fork() == 0 ) { // child process ? |
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| 254 | // -o xxx.ii cannot be used to write the output file from cpp because no output file is created if cpp detects |
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| 255 | // an error (e.g., cannot find include file). Whereas, output is always generated, even when there is an error, |
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| 256 | // when cpp writes to stdout. Hence, stdout is redirected into the temporary file. |
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| 257 | if ( freopen( tmpname, "w", stdout ) == NULL ) { // redirect stdout to tmpname |
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| 258 | perror( "CFA Translator error: cpp level, freopen" ); |
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| 259 | exit( EXIT_FAILURE ); |
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| 260 | } // if |
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| 261 | |
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| 262 | args[0] = compiler_name.c_str(); |
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| 263 | args[nargs] = cpp_in; // input to cpp |
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| 264 | nargs += 1; |
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| 265 | args[nargs] = NULL; // terminate argument list |
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| 266 | |
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| 267 | #ifdef __DEBUG_H__ |
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| 268 | cerr << "cpp nargs: " << nargs << endl; |
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| 269 | for ( i = 0; args[i] != NULL; i += 1 ) { |
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| 270 | cerr << args[i] << " "; |
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| 271 | } // for |
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| 272 | cerr << endl; |
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| 273 | #endif // __DEBUG_H__ |
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| 274 | |
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| 275 | execvp( args[0], (char *const *)args ); // should not return |
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| 276 | perror( "CFA Translator error: cpp level, execvp" ); |
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| 277 | exit( EXIT_FAILURE ); |
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| 278 | } // if |
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| 279 | |
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| 280 | wait( &code ); // wait for child to finish |
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| 281 | |
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| 282 | #ifdef __DEBUG_H__ |
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| 283 | cerr << "return code from cpp:" << WEXITSTATUS(code) << endl; |
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| 284 | #endif // __DEBUG_H__ |
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| 285 | |
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| 286 | if ( WIFSIGNALED(code) != 0 ) { // child failed ? |
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| 287 | unlink( tmpname ); // remove tmpname |
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| 288 | cerr << "CFA Translator error: cpp failed with signal " << WTERMSIG(code) << endl; |
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| 289 | exit( EXIT_FAILURE ); |
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| 290 | } // if |
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| 291 | |
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| 292 | if ( WEXITSTATUS(code) != 0 ) { // child error ? |
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| 293 | unlink( tmpname ); // remove tmpname |
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| 294 | exit( WEXITSTATUS( code ) ); // do not continue |
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| 295 | } // if |
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| 296 | |
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| 297 | // If -CFA flag specified, run the cfa-cpp preprocessor on the temporary file, and output is written to standard |
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| 298 | // output. Otherwise, run the cfa-cpp preprocessor on the temporary file and save the result into the output file. |
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| 299 | |
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| 300 | if ( CFA_flag || fork() == 0 ) { // conditional fork ? |
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| 301 | uargs[0] = ( *new string( bprefix + "/cfa-cpp" ) ).c_str(); |
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| 302 | |
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| 303 | uargs[nuargs] = "-p"; |
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| 304 | nuargs += 1; |
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| 305 | |
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| 306 | uargs[nuargs] = tmpname; |
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| 307 | nuargs += 1; |
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| 308 | if ( o_name != NULL ) { |
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| 309 | uargs[nuargs] = o_name; |
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| 310 | nuargs += 1; |
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| 311 | } else if ( ! CFA_flag ) { // run cfa-cpp ? |
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| 312 | uargs[nuargs] = cpp_out; |
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| 313 | nuargs += 1; |
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| 314 | } // if |
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| 315 | uargs[nuargs] = NULL; // terminate argument list |
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| 316 | |
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| 317 | #ifdef __DEBUG_H__ |
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| 318 | cerr << "cfa-cpp nuargs: " << o_name << " " << CFA_flag << " " << nuargs << endl; |
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| 319 | for ( i = 0; uargs[i] != NULL; i += 1 ) { |
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| 320 | cerr << uargs[i] << " "; |
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| 321 | } // for |
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| 322 | cerr << endl; |
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| 323 | #endif // __DEBUG_H__ |
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| 324 | |
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| 325 | execvp( uargs[0], (char * const *)uargs ); // should not return |
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| 326 | perror( "CFA Translator error: cpp level, execvp" ); |
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| 327 | exit( EXIT_FAILURE ); |
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| 328 | } // if |
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| 329 | |
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| 330 | wait( &code ); // wait for child to finish |
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| 331 | |
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| 332 | #ifdef __DEBUG_H__ |
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| 333 | cerr << "return code from cfa-cpp:" << WEXITSTATUS(code) << endl; |
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| 334 | #endif // __DEBUG_H__ |
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| 335 | |
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| 336 | // Must unlink here because file must exist across execvp. |
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| 337 | if ( unlink( tmpname ) == -1 ) { |
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| 338 | perror( "CFA Translator error: cpp level, unlink" ); |
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| 339 | exit( EXIT_FAILURE ); |
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| 340 | } // if |
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| 341 | |
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| 342 | if ( WIFSIGNALED(code) ) { // child failed ? |
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| 343 | cerr << "CFA Translator error: cfa-cpp failed with signal " << WTERMSIG(code) << endl; |
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| 344 | exit( EXIT_FAILURE ); |
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| 345 | } // if |
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| 346 | |
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| 347 | exit( WEXITSTATUS(code) ); |
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| 348 | } // Stage1 |
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| 349 | |
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| 350 | |
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| 351 | void Stage2( const int argc, const char * const * argv ) { |
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| 352 | int i; |
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| 353 | |
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| 354 | string arg; |
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| 355 | |
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| 356 | const char *cpp_in = NULL; |
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| 357 | |
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| 358 | const char *args[argc + 100]; // leave space for 100 additional cfa command line values |
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| 359 | int nargs = 1; // number of arguments in args list; 0 => command name |
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| 360 | |
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| 361 | // process all the arguments |
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| 362 | |
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| 363 | checkEnv( args, nargs ); // arguments passed via environment variables |
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| 364 | |
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| 365 | for ( i = 1; i < argc; i += 1 ) { |
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| 366 | #ifdef __DEBUG_H__ |
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| 367 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; |
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| 368 | #endif // __DEBUG_H__ |
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| 369 | arg = argv[i]; |
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| 370 | #ifdef __DEBUG_H__ |
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| 371 | cerr << "arg:\"" << arg << "\"" << endl; |
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| 372 | #endif // __DEBUG_H__ |
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| 373 | if ( prefix( arg, "-" ) ) { |
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| 374 | // strip inappropriate flags |
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| 375 | |
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| 376 | if ( arg == "-quiet" || arg == "-version" || arg == "-fpreprocessed" || |
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| 377 | // Currently CFA does not suppose precompiled .h files. |
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| 378 | prefix( arg, "--output-pch" ) ) { |
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| 379 | |
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| 380 | // strip inappropriate flags with an argument |
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| 381 | |
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| 382 | } else if ( arg == "-auxbase" || arg == "-auxbase-strip" || arg == "-dumpbase" ) { |
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| 383 | i += 1; |
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| 384 | #ifdef __DEBUG_H__ |
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| 385 | cerr << "arg:\"" << argv[i] << "\"" << endl; |
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| 386 | #endif // __DEBUG_H__ |
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| 387 | |
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| 388 | // all other flags |
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| 389 | |
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| 390 | } else { |
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| 391 | args[nargs] = argv[i]; // pass the flag along |
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| 392 | nargs += 1; |
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| 393 | if ( arg == "-o" ) { |
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| 394 | i += 1; |
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| 395 | args[nargs] = argv[i]; // pass the argument along |
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| 396 | nargs += 1; |
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| 397 | #ifdef __DEBUG_H__ |
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| 398 | cerr << "arg:\"" << argv[i] << "\"" << endl; |
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| 399 | #endif // __DEBUG_H__ |
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| 400 | } // if |
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| 401 | } // if |
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| 402 | } else { // obtain input and possibly output files |
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| 403 | if ( cpp_in == NULL ) { |
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| 404 | cpp_in = argv[i]; |
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| 405 | #ifdef __DEBUG_H__ |
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| 406 | cerr << "cpp_in:\"" << cpp_in << "\"" << endl; |
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| 407 | #endif // __DEBUG_H__ |
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| 408 | } else { |
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| 409 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl; |
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| 410 | exit( EXIT_FAILURE ); |
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| 411 | } // if |
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| 412 | } // if |
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| 413 | } // for |
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| 414 | |
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| 415 | #ifdef __DEBUG_H__ |
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| 416 | cerr << "args:"; |
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| 417 | for ( i = 1; i < nargs; i += 1 ) { |
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| 418 | cerr << " " << args[i]; |
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| 419 | } // for |
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| 420 | cerr << endl; |
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| 421 | if ( cpp_in != NULL ) cerr << " " << cpp_in; |
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| 422 | #endif // __DEBUG_H__ |
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| 423 | |
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| 424 | args[0] = compiler_name.c_str(); |
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| 425 | args[nargs] = "-S"; // only compile and put assembler output in specified file |
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| 426 | nargs += 1; |
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| 427 | args[nargs] = cpp_in; |
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| 428 | nargs += 1; |
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| 429 | args[nargs] = NULL; // terminate argument list |
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| 430 | |
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| 431 | #ifdef __DEBUG_H__ |
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| 432 | cerr << "stage2 nargs: " << nargs << endl; |
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| 433 | for ( i = 0; args[i] != NULL; i += 1 ) { |
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| 434 | cerr << args[i] << " "; |
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| 435 | } // for |
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| 436 | cerr << endl; |
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| 437 | #endif // __DEBUG_H__ |
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| 438 | |
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| 439 | execvp( args[0], (char * const *)args ); // should not return |
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| 440 | perror( "CFA Translator error: cpp level, execvp" ); |
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| 441 | exit( EXIT_FAILURE ); // tell gcc not to go any further |
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| 442 | } // Stage2 |
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| 443 | |
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| 444 | |
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| 445 | int main( const int argc, const char * const argv[], const char * const env[] ) { |
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| 446 | #ifdef __DEBUG_H__ |
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| 447 | for ( int i = 0; env[i] != NULL; i += 1 ) { |
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| 448 | cerr << env[i] << endl; |
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| 449 | } // for |
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| 450 | #endif // __DEBUG_H__ |
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| 451 | |
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| 452 | string arg = argv[1]; |
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| 453 | |
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| 454 | // Currently, stage 1 starts with flag -E and stage 2 with flag -fpreprocessed. |
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| 455 | |
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| 456 | if ( arg == "-E" ) { |
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| 457 | #ifdef __DEBUG_H__ |
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| 458 | cerr << "Stage1" << endl; |
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| 459 | #endif // __DEBUG_H__ |
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| 460 | Stage1( argc, argv ); |
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| 461 | } else if ( arg == "-fpreprocessed" ) { |
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| 462 | #ifdef __DEBUG_H__ |
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| 463 | cerr << "Stage2" << endl; |
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| 464 | #endif // __DEBUG_H__ |
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| 465 | Stage2( argc, argv ); |
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| 466 | } else { |
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| 467 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl; |
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| 468 | exit( EXIT_FAILURE ); |
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| 469 | } // if |
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| 470 | } // main |
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| 471 | |
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| 472 | |
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| 473 | // Local Variables: // |
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| 474 | // compile-command: "make install" // |
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| 475 | // End: // |
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