| 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // cc1.cc --
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| 8 | //
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| 9 | // Author : Peter A. Buhr
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| 10 | // Created On : Fri Aug 26 14:23:51 2005
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| 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Mon Sep 3 16:57:05 2018
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| 13 | // Update Count : 125
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| 14 | //
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| 15 |
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| 16 | #include <iostream>
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| 17 | using std::cerr;
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| 18 | using std::endl;
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| 19 | #include <string>
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| 20 | using std::string;
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| 21 | #include <cstdio> // stderr, stdout, perror, fprintf
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| 22 | #include <cstdlib> // getenv, exit, mkstemp
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| 23 | #include <unistd.h> // execvp, fork, unlink
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| 24 | #include <sys/wait.h> // wait
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| 25 |
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| 26 | #include "config.h" // configure info
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| 27 |
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| 28 |
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| 29 | //#define __DEBUG_H__
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| 30 |
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| 31 |
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| 32 | string compiler_name( CFA_BACKEND_CC ); // path/name of C compiler
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| 33 |
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| 34 | string D__GCC_BPREFIX__( "-D__GCC_BPREFIX__=" );
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| 35 | string D__CFA_FLAGPREFIX__( "-D__CFA_FLAG__=" );
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| 36 |
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| 37 | char tmpname[] = P_tmpdir "/CFAXXXXXX";
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| 38 | int tmpfilefd = -1;
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| 39 |
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| 40 |
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| 41 | bool prefix( string arg, string pre ) {
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| 42 | return arg.substr( 0, pre.size() ) == pre;
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| 43 | } // prefix
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| 44 |
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| 45 | enum { NumSuffixes = 2 };
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| 46 | const string suffixes[NumSuffixes] = { "cfa", "hfa", };
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| 47 |
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| 48 | void suffix( string arg, const char * args[], int & nargs ) {
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| 49 | //std::cerr << arg << std::endl;
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| 50 | size_t dot = arg.find_last_of( "." );
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| 51 | //std::cerr << dot << " " << (dot != string::npos ? arg.substr( dot + 1 ) : "fred" ) << std::endl;
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| 52 | if ( dot == string::npos ) return;
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| 53 | string sx = arg.substr( dot + 1 );
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| 54 | for ( int i = 0; i < NumSuffixes; i += 1 ) {
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| 55 | if ( sx == suffixes[i] ) {
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| 56 | args[nargs] = "-x";
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| 57 | nargs += 1;
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| 58 | args[nargs] = "c";
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| 59 | nargs += 1;
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| 60 | return;
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| 61 | } // if
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| 62 | } // for
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| 63 | } // suffix
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| 64 |
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| 65 |
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| 66 | void checkEnv( const char * args[], int & nargs ) {
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| 67 | char *value;
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| 68 |
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| 69 | value = getenv( "__CFA_COMPILER__" );
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| 70 | if ( value != NULL ) {
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| 71 | compiler_name = value;
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| 72 | #ifdef __DEBUG_H__
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| 73 | cerr << "env arg:\"" << compiler_name << "\"" << endl;
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| 74 | #endif // __DEBUG_H__
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| 75 | } // if
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| 76 |
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| 77 | value = getenv( "__GCC_MACHINE__" );
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| 78 | if ( value != NULL ) {
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| 79 | args[nargs] = ( *new string( value ) ).c_str(); // pass the argument along
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| 80 | #ifdef __DEBUG_H__
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| 81 | cerr << "env arg:\"" << args[nargs] << "\"" << endl;
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| 82 | #endif // __DEBUG_H__
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| 83 | nargs += 1;
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| 84 | } // if
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| 85 |
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| 86 | value = getenv( "__GCC_VERSION__" );
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| 87 | if ( value != NULL ) {
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| 88 | args[nargs] = ( *new string( value ) ).c_str(); // pass the argument along
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| 89 | #ifdef __DEBUG_H__
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| 90 | cerr << "env arg:\"" << args[nargs] << "\"" << endl;
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| 91 | #endif // __DEBUG_H__
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| 92 | nargs += 1;
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| 93 | } // if
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| 94 | } // checkEnv
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| 95 |
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| 96 |
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| 97 | void rmtmpfile() {
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| 98 | if ( unlink( tmpname ) == -1 ) { // remove tmpname
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| 99 | perror ( "CFA Translator error: cpp failed" );
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| 100 | exit( EXIT_FAILURE );
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| 101 | } // if
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| 102 | tmpfilefd = -1; // mark closed
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| 103 | } // rmtmpfile
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| 104 |
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| 105 |
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| 106 | void sigTermHandler( __attribute__((unused)) int signal ) {
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| 107 | if ( tmpfilefd != -1 ) { // RACE, file created ?
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| 108 | rmtmpfile(); // remove
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| 109 | exit( EXIT_FAILURE ); // terminate
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| 110 | } // if
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| 111 | } // sigTermHandler
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| 112 |
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| 113 |
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| 114 | void Stage1( const int argc, const char * const argv[] ) {
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| 115 | int code;
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| 116 |
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| 117 | string arg;
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| 118 | string bprefix;
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| 119 |
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| 120 | const char *cpp_in = NULL;
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| 121 | const char *cpp_out = NULL;
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| 122 |
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| 123 | bool CFA_flag = false;
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| 124 | bool cpp_flag = false;
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| 125 | const char *o_name = NULL;
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| 126 |
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| 127 | const char *args[argc + 100]; // leave space for 100 additional cpp command line values
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| 128 | int nargs = 1; // number of arguments in args list; 0 => command name
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| 129 | const char *cargs[20]; // leave space for 20 additional cfa-cpp command line values
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| 130 | int ncargs = 1; // 0 => command name
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| 131 |
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| 132 | signal( SIGINT, sigTermHandler );
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| 133 | signal( SIGTERM, sigTermHandler );
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| 134 |
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| 135 | #ifdef __DEBUG_H__
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| 136 | cerr << "Stage1" << endl;
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| 137 | #endif // __DEBUG_H__
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| 138 | checkEnv( args, nargs ); // arguments passed via environment variables
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| 139 | #ifdef __DEBUG_H__
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| 140 | for ( int i = 1; i < argc; i += 1 ) {
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| 141 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
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| 142 | } // for
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| 143 | #endif // __DEBUG_H__
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| 144 |
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| 145 | // process all the arguments
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| 146 |
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| 147 | for ( int i = 1; i < argc; i += 1 ) {
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| 148 | arg = argv[i];
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| 149 | if ( prefix( arg, "-" ) ) {
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| 150 | // strip g++ flags that are inappropriate or cause duplicates in subsequent passes
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| 151 |
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| 152 | if ( arg == "-quiet" ) {
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| 153 | } else if ( arg == "-imultilib" || arg == "-imultiarch" ) {
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| 154 | i += 1; // and the argument
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| 155 | } else if ( prefix( arg, "-A" ) ) {
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| 156 | } else if ( prefix( arg, "-D__GNU" ) ) {
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| 157 | //********
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| 158 | // GCC 5.6.0 SEPARATED THE -D FROM THE ARGUMENT!
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| 159 | //********
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| 160 | } else if ( arg == "-D" && prefix( argv[i + 1], "__GNU" ) ) {
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| 161 | i += 1; // and the argument
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| 162 |
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| 163 | // strip flags controlling cpp step
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| 164 |
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| 165 | } else if ( arg == "-D__CPP__" ) {
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| 166 | cpp_flag = true;
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| 167 | } else if ( arg == "-D" && string( argv[i + 1] ) == "__CPP__" ) {
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| 168 | i += 1; // and the argument
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| 169 | cpp_flag = true;
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| 170 | } else if ( arg == "-D__CFA_PREPROCESS__" ) {
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| 171 | CFA_flag = true;
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| 172 | } else if ( arg == "-D" && string( argv[i + 1] ) == "__CFA_PREPROCESS__" ) {
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| 173 | i += 1; // and the argument
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| 174 | CFA_flag = true;
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| 175 | } else if ( prefix( arg, D__CFA_FLAGPREFIX__ ) ) {
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| 176 | cargs[ncargs] = ( *new string( arg.substr( D__CFA_FLAGPREFIX__.size() ) ) ).c_str();
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| 177 | ncargs += 1;
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| 178 | } else if ( arg == "-D" && prefix( argv[i + 1], D__CFA_FLAGPREFIX__.substr(2) ) ) {
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| 179 | cargs[ncargs] = ( *new string( string( argv[i + 1] ).substr( D__CFA_FLAGPREFIX__.size() - 2 ) ) ).c_str();
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| 180 | ncargs += 1;
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| 181 | i += 1; // and the argument
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| 182 | } else if ( prefix( arg, D__GCC_BPREFIX__ ) ) {
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| 183 | bprefix = arg.substr( D__GCC_BPREFIX__.size() );
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| 184 | } else if ( arg == "-D" && prefix( argv[i + 1], D__GCC_BPREFIX__.substr(2) ) ) {
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| 185 | bprefix = string( argv[i + 1] ).substr( D__GCC_BPREFIX__.size() - 2 );
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| 186 | i += 1; // and the argument
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| 187 |
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| 188 | // all other flags
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| 189 |
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| 190 | } else if ( arg == "-o" ) {
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| 191 | i += 1;
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| 192 | o_name = argv[i];
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| 193 | } else {
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| 194 | args[nargs] = argv[i]; // pass the flag along
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| 195 | nargs += 1;
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| 196 | // CPP flags with an argument
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| 197 | if ( arg == "-D" || arg == "-U" || arg == "-I" || arg == "-MF" || arg == "-MT" || arg == "-MQ" ||
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| 198 | arg == "-include" || arg == "-imacros" || arg == "-idirafter" || arg == "-iprefix" ||
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| 199 | arg == "-iwithprefix" || arg == "-iwithprefixbefore" || arg == "-isystem" || arg == "-isysroot" ) {
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| 200 | i += 1;
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| 201 | args[nargs] = argv[i]; // pass the argument along
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| 202 | nargs += 1;
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| 203 | #ifdef __DEBUG_H__
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| 204 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
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| 205 | #endif // __DEBUG_H__
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| 206 | } else if ( arg == "-MD" || arg == "-MMD" ) {
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| 207 | args[nargs] = "-MF"; // insert before file
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| 208 | nargs += 1;
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| 209 | i += 1;
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| 210 | args[nargs] = argv[i]; // pass the argument along
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| 211 | nargs += 1;
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| 212 | #ifdef __DEBUG_H__
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| 213 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
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| 214 | #endif // __DEBUG_H__
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| 215 | } // if
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| 216 | } // if
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| 217 | } else { // obtain input and possibly output files
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| 218 | if ( cpp_in == NULL ) {
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| 219 | cpp_in = argv[i];
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| 220 | #ifdef __DEBUG_H__
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| 221 | cerr << "cpp_in:\"" << cpp_in << "\"" << endl;
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| 222 | #endif // __DEBUG_H__
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| 223 | } else if ( cpp_out == NULL ) {
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| 224 | cpp_out = argv[i];
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| 225 | #ifdef __DEBUG_H__
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| 226 | cerr << "cpp_out:\"" << cpp_out << "\""<< endl;
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| 227 | #endif // __DEBUG_H__
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| 228 | } else {
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| 229 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
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| 230 | exit( EXIT_FAILURE );
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| 231 | } // if
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| 232 | } // if
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| 233 | } // for
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| 234 |
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| 235 | #ifdef __DEBUG_H__
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| 236 | cerr << "args:";
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| 237 | for ( int i = 1; i < nargs; i += 1 ) {
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| 238 | cerr << " " << args[i];
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| 239 | } // for
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| 240 | if ( cpp_in != NULL ) cerr << " " << cpp_in;
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| 241 | if ( cpp_out != NULL ) cerr << " " << cpp_out;
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| 242 | cerr << endl;
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| 243 | #endif // __DEBUG_H__
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| 244 |
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| 245 | if ( cpp_in == NULL ) {
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| 246 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
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| 247 | exit( EXIT_FAILURE );
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| 248 | } // if
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| 249 |
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| 250 | if ( cpp_flag ) {
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| 251 | // The -E flag is specified on the cfa command so only run the preprocessor and output is written to standard
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| 252 | // 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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| 253 |
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| 254 | args[0] = compiler_name.c_str();
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| 255 | suffix( cpp_in, args, nargs ); // check suffix
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| 256 | args[nargs] = cpp_in;
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| 257 | nargs += 1;
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| 258 | if ( o_name != NULL ) { // location for output
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| 259 | args[nargs] = "-o";
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| 260 | nargs += 1;
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| 261 | args[nargs] = o_name;
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| 262 | nargs += 1;
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| 263 | } // if
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| 264 | args[nargs] = NULL; // terminate argument list
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| 265 |
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| 266 | #ifdef __DEBUG_H__
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| 267 | cerr << "nargs: " << nargs << endl;
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| 268 | for ( int i = 0; args[i] != NULL; i += 1 ) {
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| 269 | cerr << args[i] << " ";
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| 270 | } // for
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| 271 | cerr << endl;
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| 272 | #endif // __DEBUG_H__
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| 273 |
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| 274 | execvp( args[0], (char *const *)args ); // should not return
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| 275 | perror( "CFA Translator error: cpp level, execvp" );
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| 276 | exit( EXIT_FAILURE );
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| 277 | } // if
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| 278 |
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| 279 | // Create a temporary file to store output of the C preprocessor.
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| 280 |
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| 281 | tmpfilefd = mkstemp( tmpname );
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| 282 | if ( tmpfilefd == -1 ) {
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| 283 | perror( "CFA Translator error: cpp level, mkstemp" );
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| 284 | exit( EXIT_FAILURE );
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| 285 | } // if
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| 286 |
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| 287 | #ifdef __DEBUG_H__
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| 288 | cerr << "tmpname:" << tmpname << " tmpfilefd:" << tmpfilefd << endl;
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| 289 | #endif // __DEBUG_H__
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| 290 |
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| 291 | // Run the C preprocessor and save the output in tmpfile.
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| 292 |
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| 293 | if ( fork() == 0 ) { // child process ?
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| 294 | // -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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| 295 | // an error (e.g., cannot find include file). Whereas, output is always generated, even when there is an error,
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| 296 | // when cpp writes to stdout. Hence, stdout is redirected into the temporary file.
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| 297 | if ( freopen( tmpname, "w", stdout ) == NULL ) { // redirect stdout to tmpname
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| 298 | perror( "CFA Translator error: cpp level, freopen" );
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| 299 | exit( EXIT_FAILURE );
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| 300 | } // if
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| 301 |
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| 302 | args[0] = compiler_name.c_str();
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| 303 | suffix( cpp_in, args, nargs ); // check suffix
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| 304 | args[nargs] = cpp_in; // input to cpp
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| 305 | nargs += 1;
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| 306 | args[nargs] = NULL; // terminate argument list
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| 307 |
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| 308 | #ifdef __DEBUG_H__
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| 309 | cerr << "cpp nargs: " << nargs << endl;
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| 310 | for ( int i = 0; args[i] != NULL; i += 1 ) {
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| 311 | cerr << args[i] << " ";
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| 312 | } // for
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| 313 | cerr << endl;
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| 314 | #endif // __DEBUG_H__
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| 315 |
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| 316 | execvp( args[0], (char *const *)args ); // should not return
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| 317 | perror( "CFA Translator error: cpp level, execvp" );
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| 318 | exit( EXIT_FAILURE );
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| 319 | } // if
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| 320 |
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| 321 | wait( &code ); // wait for child to finish
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| 322 |
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| 323 | #ifdef __DEBUG_H__
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| 324 | cerr << "return code from cpp:" << WEXITSTATUS(code) << endl;
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| 325 | #endif // __DEBUG_H__
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| 326 |
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| 327 | if ( WIFSIGNALED(code) != 0 ) { // child failed ?
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| 328 | rmtmpfile(); // remove tmpname
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| 329 | cerr << "CFA Translator error: cpp failed with signal " << WTERMSIG(code) << endl;
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| 330 | exit( EXIT_FAILURE );
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| 331 | } // if
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| 332 |
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| 333 | if ( WEXITSTATUS(code) != 0 ) { // child error ?
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| 334 | rmtmpfile(); // remove tmpname
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| 335 | exit( WEXITSTATUS( code ) ); // do not continue
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| 336 | } // if
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| 337 |
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| 338 | // If -CFA flag specified, run the cfa-cpp preprocessor on the temporary file, and output is written to standard
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| 339 | // output. Otherwise, run the cfa-cpp preprocessor on the temporary file and save the result into the output file.
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| 340 |
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| 341 | if ( fork() == 0 ) { // child runs CFA
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| 342 | cargs[0] = ( *new string( bprefix + "cfa-cpp" ) ).c_str();
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| 343 |
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| 344 | // Source file-name used to generate routine names containing global initializations for TU.
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| 345 | cargs[ncargs] = ( *new string( "-F" ) ).c_str();
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| 346 | ncargs += 1;
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| 347 | cargs[ncargs] = ( *new string( string( cpp_in ) ) ).c_str();
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| 348 | ncargs += 1;
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| 349 |
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| 350 | cargs[ncargs] = tmpname;
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| 351 | ncargs += 1;
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| 352 | if ( o_name != NULL ) {
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| 353 | cargs[ncargs] = o_name;
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| 354 | ncargs += 1;
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| 355 | } else if ( ! CFA_flag ) { // run cfa-cpp ?
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| 356 | cargs[ncargs] = cpp_out;
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| 357 | ncargs += 1;
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| 358 | } // if
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| 359 | cargs[ncargs] = NULL; // terminate argument list
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| 360 |
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| 361 | #ifdef __DEBUG_H__
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| 362 | cerr << "cfa-cpp ncargs: " << o_name << " " << CFA_flag << " " << ncargs << endl;
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| 363 | for ( int i = 0; cargs[i] != NULL; i += 1 ) {
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| 364 | cerr << cargs[i] << " ";
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| 365 | } // for
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| 366 | cerr << endl;
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| 367 | #endif // __DEBUG_H__
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| 368 |
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| 369 | execvp( cargs[0], (char * const *)cargs ); // should not return
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| 370 | perror( "CFA Translator error: cpp level, execvp" );
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| 371 | exit( EXIT_FAILURE );
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| 372 | } // if
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| 373 |
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| 374 | wait( &code ); // wait for child to finish
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| 375 |
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| 376 | #ifdef __DEBUG_H__
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| 377 | cerr << "return code from cfa-cpp:" << WEXITSTATUS(code) << endl;
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| 378 | #endif // __DEBUG_H__
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| 379 |
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| 380 | // Must unlink here because file must exist across execvp.
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| 381 | rmtmpfile(); // remove tmpname
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| 382 |
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| 383 | if ( WIFSIGNALED(code) ) { // child failed ?
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| 384 | cerr << "CFA Translator error: cfa-cpp failed with signal " << WTERMSIG(code) << endl;
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| 385 | exit( EXIT_FAILURE );
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| 386 | } // if
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| 387 |
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| 388 | exit( WEXITSTATUS(code) );
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| 389 | } // Stage1
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| 390 |
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| 391 |
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| 392 | void Stage2( const int argc, const char * const * argv ) {
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| 393 | string arg;
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| 394 |
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| 395 | const char *cpp_in = NULL;
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| 396 |
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| 397 | const char *args[argc + 100]; // leave space for 100 additional cfa command line values
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| 398 | int nargs = 1; // number of arguments in args list; 0 => command name
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| 399 |
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| 400 | #ifdef __DEBUG_H__
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| 401 | cerr << "Stage2" << endl;
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| 402 | #endif // __DEBUG_H__
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| 403 | checkEnv( args, nargs ); // arguments passed via environment variables
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| 404 | #ifdef __DEBUG_H__
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| 405 | for ( int i = 1; i < argc; i += 1 ) {
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| 406 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
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| 407 | } // for
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| 408 | #endif // __DEBUG_H__
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| 409 |
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| 410 | // process all the arguments
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| 411 |
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| 412 | for ( int i = 1; i < argc; i += 1 ) {
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| 413 | arg = argv[i];
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| 414 | if ( prefix( arg, "-" ) ) {
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| 415 | // strip inappropriate flags
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| 416 |
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| 417 | if ( arg == "-quiet" || arg == "-version" || arg == "-fpreprocessed" ||
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| 418 | // Currently CFA does not suppose precompiled .h files.
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| 419 | prefix( arg, "--output-pch" ) ) {
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| 420 |
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| 421 | // strip inappropriate flags with an argument
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| 422 |
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| 423 | } else if ( arg == "-auxbase" || arg == "-auxbase-strip" || arg == "-dumpbase" ) {
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| 424 | i += 1;
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| 425 | #ifdef __DEBUG_H__
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| 426 | cerr << "arg:\"" << argv[i] << "\"" << endl;
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| 427 | #endif // __DEBUG_H__
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| 428 |
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| 429 | // all other flags
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| 430 |
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| 431 | } else {
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| 432 | args[nargs] = argv[i]; // pass the flag along
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| 433 | nargs += 1;
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| 434 | if ( arg == "-o" ) {
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| 435 | i += 1;
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| 436 | args[nargs] = argv[i]; // pass the argument along
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| 437 | nargs += 1;
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| 438 | #ifdef __DEBUG_H__
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| 439 | cerr << "arg:\"" << argv[i] << "\"" << endl;
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| 440 | #endif // __DEBUG_H__
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| 441 | } // if
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| 442 | } // if
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| 443 | } else { // obtain input and possibly output files
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| 444 | if ( cpp_in == NULL ) {
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| 445 | cpp_in = argv[i];
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| 446 | #ifdef __DEBUG_H__
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| 447 | cerr << "cpp_in:\"" << cpp_in << "\"" << endl;
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| 448 | #endif // __DEBUG_H__
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| 449 | } else {
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| 450 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
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| 451 | exit( EXIT_FAILURE );
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| 452 | } // if
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| 453 | } // if
|
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| 454 | } // for
|
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| 455 |
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| 456 | #ifdef __DEBUG_H__
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| 457 | cerr << "args:";
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| 458 | for ( int i = 1; i < nargs; i += 1 ) {
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| 459 | cerr << " " << args[i];
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| 460 | } // for
|
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| 461 | cerr << endl;
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| 462 | if ( cpp_in != NULL ) cerr << " " << cpp_in;
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| 463 | #endif // __DEBUG_H__
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| 464 |
|
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| 465 | args[0] = compiler_name.c_str();
|
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| 466 | args[nargs] = "-S"; // only compile and put assembler output in specified file
|
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| 467 | nargs += 1;
|
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| 468 | args[nargs] = cpp_in;
|
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| 469 | nargs += 1;
|
|---|
| 470 | args[nargs] = NULL; // terminate argument list
|
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| 471 |
|
|---|
| 472 | #ifdef __DEBUG_H__
|
|---|
| 473 | cerr << "stage2 nargs: " << nargs << endl;
|
|---|
| 474 | for ( int i = 0; args[i] != NULL; i += 1 ) {
|
|---|
| 475 | cerr << args[i] << " ";
|
|---|
| 476 | } // for
|
|---|
| 477 | cerr << endl;
|
|---|
| 478 | #endif // __DEBUG_H__
|
|---|
| 479 |
|
|---|
| 480 | execvp( args[0], (char * const *)args ); // should not return
|
|---|
| 481 | perror( "CFA Translator error: cpp level, execvp" );
|
|---|
| 482 | exit( EXIT_FAILURE ); // tell gcc not to go any further
|
|---|
| 483 | } // Stage2
|
|---|
| 484 |
|
|---|
| 485 |
|
|---|
| 486 | int main( const int argc, const char * const argv[], __attribute__((unused)) const char * const env[] ) {
|
|---|
| 487 | #ifdef __DEBUG_H__
|
|---|
| 488 | for ( int int i = 0; env[i] != NULL; i += 1 ) {
|
|---|
| 489 | cerr << env[i] << endl;
|
|---|
| 490 | } // for
|
|---|
| 491 | #endif // __DEBUG_H__
|
|---|
| 492 |
|
|---|
| 493 | string arg = argv[1];
|
|---|
| 494 |
|
|---|
| 495 | // Currently, stage 1 starts with flag -E and stage 2 with flag -fpreprocessed.
|
|---|
| 496 |
|
|---|
| 497 | if ( arg == "-E" ) {
|
|---|
| 498 | Stage1( argc, argv );
|
|---|
| 499 | } else if ( arg == "-fpreprocessed" ) {
|
|---|
| 500 | Stage2( argc, argv );
|
|---|
| 501 | } else {
|
|---|
| 502 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
|
|---|
| 503 | exit( EXIT_FAILURE );
|
|---|
| 504 | } // if
|
|---|
| 505 | } // main
|
|---|
| 506 |
|
|---|
| 507 | // Local Variables: //
|
|---|
| 508 | // tab-width: 4 //
|
|---|
| 509 | // mode: c++ //
|
|---|
| 510 | // compile-command: "make install" //
|
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| 511 | // End: //
|
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