| 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 : Thu Aug 13 21:03:15 2020
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| 13 | // Update Count : 407
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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 <algorithm> // find
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| 22 | #include <cstdio> // stderr, stdout, perror, fprintf
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| 23 | #include <cstdlib> // getenv, exit, mkstemp
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| 24 | #include <unistd.h> // execvp, fork, unlink
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| 25 | #include <sys/wait.h> // wait
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| 26 | #include <fcntl.h>
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| 27 |
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| 28 |
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| 29 | #include "config.h" // configure info
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| 30 |
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| 31 |
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| 32 | //#define __DEBUG_H__
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| 33 |
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| 34 |
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| 35 | static string compiler_path( CFA_BACKEND_CC ); // C compiler path/name
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| 36 | static bool CFA_flag = false; // -CFA flag
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| 37 | static bool save_temps = false; // -save-temps flag
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| 38 | static string o_file;
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| 39 | static string bprefix;
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| 40 | static string lang; // -x flag
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| 41 |
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| 42 |
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| 43 | static bool prefix( const string & arg, const string & pre ) {
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| 44 | return arg.substr( 0, pre.size() ) == pre;
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| 45 | } // prefix
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| 46 |
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| 47 | static void suffix( const string & arg, const char * args[], int & nargs ) {
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| 48 | enum { NumSuffixes = 3 };
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| 49 | static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" };
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| 50 |
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| 51 | size_t dot = arg.find_last_of( "." );
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| 52 | if ( dot == string::npos ) return;
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| 53 | const string * end = suffixes + NumSuffixes;
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| 54 | if ( std::find( suffixes, end, arg.substr( dot + 1 ) ) != end ) {
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| 55 | args[nargs++] = "-x";
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| 56 | args[nargs++] = "c";
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| 57 | } // if
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| 58 | } // suffix
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| 59 |
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| 60 |
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| 61 | static string __CFA_FLAGPREFIX__( "__CFA_FLAG" ); // "N__=" suffix
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| 62 |
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| 63 | static void checkEnv1( const char * args[], int & nargs ) { // stage 1
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| 64 | extern char ** environ;
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| 65 |
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| 66 | for ( int i = 0; environ[i]; i += 1 ) {
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| 67 | string arg( environ[i] );
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| 68 | #ifdef __DEBUG_H__
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| 69 | cerr << "env arg:\"" << arg << "\"" << endl;
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| 70 | #endif // __DEBUG_H__
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| 71 |
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| 72 | if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) {
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| 73 | string val( arg.substr( arg.find_first_of( "=" ) + 1 ) );
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| 74 | if ( prefix( val, "-compiler=" ) ) {
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| 75 | compiler_path = val.substr( 10 );
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| 76 | } else if ( prefix( val, "-x=" ) ) {
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| 77 | lang = val.substr( 3 );
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| 78 | } // if
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| 79 | } // if
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| 80 | } // for
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| 81 | } // checkEnv1
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| 82 |
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| 83 |
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| 84 | static void checkEnv2( const char * args[], int & nargs ) { // stage 2
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| 85 | extern char ** environ;
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| 86 |
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| 87 | for ( int i = 0; environ[i]; i += 1 ) {
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| 88 | string arg( environ[i] );
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| 89 | #ifdef __DEBUG_H__
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| 90 | cerr << "env arg:\"" << arg << "\"" << endl;
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| 91 | #endif // __DEBUG_H__
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| 92 |
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| 93 | if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) {
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| 94 | string val( arg.substr( arg.find_first_of( "=" ) + 1 ) );
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| 95 | if ( prefix( val, "-compiler=" ) ) {
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| 96 | compiler_path = val.substr( 10 );
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| 97 | } else if ( val == "-CFA" ) {
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| 98 | CFA_flag = true;
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| 99 | } else if ( val == "-save-temps" ) {
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| 100 | save_temps = true;
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| 101 | } else if ( prefix( val, "-o=" ) ) { // output file for -CFA
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| 102 | o_file = val.substr( 3 );
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| 103 | } else if ( prefix( val, "-B=" ) ) { // location of cfa-cpp
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| 104 | bprefix = val.substr( 3 );
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| 105 | } else if ( prefix( val, "-x=" ) ) { // ignore
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| 106 | } else { // normal flag for cfa-cpp
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| 107 | args[nargs++] = ( *new string( arg.substr( arg.find_first_of( "=" ) + 1 ) ) ).c_str();
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| 108 | } // if
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| 109 | } // if
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| 110 | } // for
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| 111 | } // checkEnv2
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| 112 |
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| 113 |
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| 114 | static char tmpname[] = P_tmpdir "/CFAXXXXXX.ifa";
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| 115 | static int tmpfilefd = -1;
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| 116 | static bool startrm = false;
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| 117 |
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| 118 | static void rmtmpfile() {
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| 119 | if ( tmpfilefd == -1 ) return; // RACE, file created ?
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| 120 |
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| 121 | startrm = true; // RACE with C-c C-c
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| 122 | if ( unlink( tmpname ) == -1 ) { // remove tmpname
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| 123 | perror ( "CC1 Translator error: failed, unlink" );
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| 124 | exit( EXIT_FAILURE );
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| 125 | } // if
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| 126 | tmpfilefd = -1; // mark removed
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| 127 | } // rmtmpfile
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| 128 |
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| 129 |
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| 130 | static void sigTermHandler( int ) { // C-c C-c
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| 131 | if ( startrm ) return; // return and let rmtmpfile finish, and then program finishes
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| 132 |
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| 133 | if ( tmpfilefd != -1 ) { // RACE, file created ?
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| 134 | rmtmpfile(); // remove tmpname
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| 135 | } // if
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| 136 | exit( EXIT_FAILURE ); // terminate
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| 137 | } // sigTermHandler
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| 138 |
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| 139 |
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| 140 | static void Stage1( const int argc, const char * const argv[] ) {
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| 141 | int code;
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| 142 | string arg;
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| 143 |
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| 144 | const char * cpp_in = nullptr;
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| 145 | const char * cpp_out = nullptr;
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| 146 |
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| 147 | bool cpp_flag = false;
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| 148 | bool o_flag = false;
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| 149 |
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| 150 | const char * args[argc + 100]; // leave space for 100 additional cpp command line values
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| 151 | int nargs = 1; // number of arguments in args list; 0 => command name
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| 152 |
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| 153 | #ifdef __DEBUG_H__
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| 154 | cerr << "Stage1" << endl;
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| 155 | #endif // __DEBUG_H__
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| 156 | checkEnv1( args, nargs ); // arguments passed via environment variables
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| 157 | #ifdef __DEBUG_H__
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| 158 | for ( int i = 1; i < argc; i += 1 ) {
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| 159 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
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| 160 | } // for
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| 161 | #endif // __DEBUG_H__
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| 162 |
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| 163 | // process all the arguments
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| 164 |
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| 165 | for ( int i = 1; i < argc; i += 1 ) {
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| 166 | arg = argv[i];
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| 167 | if ( prefix( arg, "-" ) ) {
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| 168 | // strip g++ flags that are inappropriate or cause duplicates in subsequent passes
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| 169 |
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| 170 | if ( arg == "-quiet" ) {
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| 171 | } else if ( arg == "-imultilib" || arg == "-imultiarch" ) {
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| 172 | i += 1; // and argument
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| 173 | } else if ( prefix( arg, "-A" ) ) {
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| 174 | } else if ( prefix( arg, "-D__GNU" ) ) {
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| 175 | //********
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| 176 | // GCC 5.6.0 SEPARATED THE -D FROM THE ARGUMENT!
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| 177 | //********
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| 178 | } else if ( arg == "-D" && prefix( argv[i + 1], "__GNU" ) ) {
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| 179 | i += 1; // and argument
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| 180 |
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| 181 | // strip flags controlling cpp step
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| 182 |
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| 183 | } else if ( arg == "-D__CPP__" ) {
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| 184 | cpp_flag = true;
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| 185 | } else if ( arg == "-D" && string( argv[i + 1] ) == "__CPP__" ) {
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| 186 | i += 1; // and argument
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| 187 | cpp_flag = true;
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| 188 |
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| 189 | // all other flags
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| 190 |
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| 191 | } else if ( arg == "-o" ) {
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| 192 | i += 1;
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| 193 | o_flag = true;
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| 194 | cpp_out = argv[i];
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| 195 | } else {
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| 196 | args[nargs++] = argv[i]; // pass flag along
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| 197 | // CPP flags with an argument
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| 198 | if ( arg == "-D" || arg == "-U" || arg == "-I" || arg == "-MF" || arg == "-MT" || arg == "-MQ" ||
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| 199 | arg == "-include" || arg == "-imacros" || arg == "-idirafter" || arg == "-iprefix" ||
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| 200 | arg == "-iwithprefix" || arg == "-iwithprefixbefore" || arg == "-isystem" || arg == "-isysroot" ) {
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| 201 | i += 1;
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| 202 | args[nargs++] = argv[i]; // pass argument along
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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 | // gcc frontend generates the dependency file-name after the -MD/-MMD flag, but it is necessary to
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| 208 | // prefix that file name with -MF.
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| 209 | args[nargs++] = "-MF"; // insert before file
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| 210 | i += 1;
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| 211 | args[nargs++] = argv[i]; // pass argument along
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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 == nullptr ) {
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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 == nullptr ) {
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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 != nullptr ) cerr << " " << cpp_in;
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| 241 | if ( cpp_out != nullptr ) 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 == nullptr ) {
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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_path.c_str();
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| 255 | if ( lang.size() == 0 ) {
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| 256 | suffix( cpp_in, args, nargs ); // check suffix
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| 257 | } else {
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| 258 | args[nargs++] = "-x";
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| 259 | args[nargs++] = ( *new string( lang.c_str() ) ).c_str();
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| 260 | } // if
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| 261 | args[nargs++] = cpp_in;
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| 262 | if ( o_flag ) { // location for output
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| 263 | args[nargs++] = "-o";
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| 264 | } // if
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| 265 | args[nargs++] = cpp_out;
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| 266 | args[nargs] = nullptr; // terminate argument list
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| 267 |
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| 268 | #ifdef __DEBUG_H__
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| 269 | cerr << "nargs: " << nargs << endl;
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| 270 | for ( int i = 0; args[i] != nullptr; i += 1 ) {
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| 271 | cerr << args[i] << " ";
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| 272 | } // for
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| 273 | cerr << endl;
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| 274 | #endif // __DEBUG_H__
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| 275 |
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| 276 | execvp( args[0], (char * const *)args ); // should not return
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| 277 | perror( "CC1 Translator error: stage 1, execvp" );
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| 278 | exit( EXIT_FAILURE );
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| 279 | } // if
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| 280 |
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| 281 | // Run the C preprocessor and save the output in the given file.
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| 282 |
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| 283 | if ( fork() == 0 ) { // child process ?
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| 284 | // -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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| 285 | // an error (e.g., cannot find include file). Whereas, output is always generated, even when there is an error,
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| 286 | // when cpp writes to stdout. Hence, stdout is redirected into the temporary file.
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| 287 | if ( freopen( cpp_out, "w", stdout ) == nullptr ) { // redirect stdout to output file
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| 288 | perror( "CC1 Translator error: stage 1, freopen" );
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| 289 | exit( EXIT_FAILURE );
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| 290 | } // if
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| 291 |
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| 292 | args[0] = compiler_path.c_str();
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| 293 | if ( lang.size() == 0 ) {
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| 294 | suffix( cpp_in, args, nargs ); // check suffix
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| 295 | } else {
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| 296 | args[nargs++] = "-x";
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| 297 | args[nargs++] = ( *new string( lang.c_str() ) ).c_str();
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| 298 | } // if
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| 299 | args[nargs++] = cpp_in; // input to cpp
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| 300 | args[nargs] = nullptr; // terminate argument list
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| 301 |
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| 302 | #ifdef __DEBUG_H__
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| 303 | cerr << "cpp nargs: " << nargs << endl;
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| 304 | for ( int i = 0; args[i] != nullptr; i += 1 ) {
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| 305 | cerr << args[i] << " ";
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| 306 | } // for
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| 307 | cerr << endl;
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| 308 | #endif // __DEBUG_H__
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| 309 |
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| 310 | execvp( args[0], (char * const *)args ); // should not return
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| 311 | perror( "CC1 Translator error: stage 1 cpp, execvp" );
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| 312 | cerr << " invoked " << args[0] << endl;
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| 313 | exit( EXIT_FAILURE );
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| 314 | } // if
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| 315 |
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| 316 | wait( &code ); // wait for child to finish
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| 317 |
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| 318 | #ifdef __DEBUG_H__
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| 319 | cerr << "return code from cpp:" << WEXITSTATUS(code) << endl;
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| 320 | #endif // __DEBUG_H__
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| 321 |
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| 322 | if ( WIFSIGNALED(code) ) { // child failed ?
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| 323 | cerr << "CC1 Translator error: stage 1, child failed " << WTERMSIG(code) << endl;
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| 324 | exit( EXIT_FAILURE );
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| 325 | } // if
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| 326 |
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| 327 | exit( WEXITSTATUS(code) ); // bad cpp result stops top-level gcc
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| 328 | } // Stage1
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| 329 |
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| 330 |
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| 331 | static void Stage2( const int argc, const char * const * argv ) {
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| 332 | int code;
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| 333 | string arg;
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| 334 |
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| 335 | const char * cpp_in = nullptr;
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| 336 | const char * cpp_out = nullptr;
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| 337 |
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| 338 | const char * args[argc + 100]; // leave space for 100 additional cfa command line values
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| 339 | int nargs = 1; // number of arguments in args list; 0 => command name
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| 340 | const char * cargs[20]; // leave space for 20 additional cfa-cpp command line values
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| 341 | int ncargs = 1; // 0 => command name
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| 342 |
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| 343 | #ifdef __DEBUG_H__
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| 344 | cerr << "Stage2" << endl;
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| 345 | #endif // __DEBUG_H__
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| 346 | checkEnv2( cargs, ncargs ); // arguments passed via environment variables
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| 347 | #ifdef __DEBUG_H__
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| 348 | for ( int i = 1; i < argc; i += 1 ) {
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| 349 | cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
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| 350 | } // for
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| 351 | #endif // __DEBUG_H__
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| 352 |
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| 353 | enum {
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| 354 | Color_Auto = 0,
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| 355 | Color_Always = 1,
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| 356 | Color_Never = 2,
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| 357 | } color_arg = Color_Auto;
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| 358 |
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| 359 | const char * color_names[3] = { "--colors=auto", "--colors=always", "--colors=never" };
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| 360 |
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| 361 | // process all the arguments
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| 362 |
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| 363 | for ( int i = 1; i < argc; i += 1 ) {
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| 364 | arg = argv[i];
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| 365 | if ( prefix( arg, "-" ) ) {
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| 366 | // strip inappropriate flags
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| 367 |
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| 368 | if ( prefix( arg, "-fdiagnostics-color=" ) ) {
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| 369 | string choice = arg.substr(20);
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| 370 | if(choice == "always") color_arg = Color_Always;
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| 371 | else if(choice == "never" ) color_arg = Color_Never;
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| 372 | else if(choice == "auto" ) color_arg = Color_Auto;
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| 373 | } else if ( arg == "-fno-diagnostics-color" ) {
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| 374 | color_arg = Color_Auto;
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| 375 | }
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| 376 |
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| 377 | if ( arg == "-quiet" || arg == "-version" || arg == "-fpreprocessed" ||
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| 378 | // Currently CFA does not suppose precompiled .h files.
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| 379 | prefix( arg, "--output-pch" ) ) {
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| 380 |
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| 381 | // strip inappropriate flags with an argument
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| 382 |
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| 383 | } else if ( arg == "-auxbase" || arg == "-auxbase-strip" || arg == "-dumpbase" ) {
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| 384 | i += 1;
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| 385 | #ifdef __DEBUG_H__
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| 386 | cerr << "arg:\"" << argv[i] << "\"" << endl;
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| 387 | #endif // __DEBUG_H__
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| 388 |
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| 389 | // all other flags
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| 390 |
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| 391 | } else {
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| 392 | args[nargs++] = argv[i]; // pass flag along
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| 393 | if ( arg == "-o" ) {
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| 394 | i += 1;
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| 395 | cpp_out = argv[i];
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| 396 | args[nargs++] = argv[i]; // pass argument along
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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 == nullptr ) {
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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 if ( cpp_out == nullptr ) {
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| 409 | cpp_out = argv[i];
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| 410 | #ifdef __DEBUG_H__
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| 411 | cerr << "cpp_out:\"" << cpp_out << "\""<< endl;
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| 412 | #endif // __DEBUG_H__
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| 413 | } else {
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| 414 | cerr << "Usage: " << argv[0] << " more than two files specified" << endl;
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| 415 | exit( EXIT_FAILURE );
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| 416 | } // if
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| 417 | } // if
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| 418 | } // for
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| 419 |
|
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| 420 | if ( cpp_in == nullptr ) {
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| 421 | cerr << "Usage: " << argv[0] << " missing input file" << endl;
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| 422 | exit( EXIT_FAILURE );
|
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| 423 | } // if
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| 424 | if ( cpp_out == nullptr ) {
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| 425 | cerr << "Usage: " << argv[0] << " missing output file" << endl;
|
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| 426 | exit( EXIT_FAILURE );
|
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| 427 | } // if
|
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| 428 |
|
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| 429 | // Create a temporary file, if needed, to store output of the cfa-cpp preprocessor. Cannot be created in forked
|
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| 430 | // process because variables tmpname and tmpfilefd are cloned.
|
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| 431 |
|
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| 432 | string cfa_cpp_out;
|
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| 433 |
|
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| 434 | if ( ! CFA_flag ) { // run compiler ?
|
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| 435 | if ( save_temps ) {
|
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| 436 | cfa_cpp_out = cpp_in;
|
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| 437 | size_t dot = cfa_cpp_out.find_last_of( "." );
|
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| 438 | if ( dot == string::npos ) {
|
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| 439 | cerr << "CC1 Translator error: stage 2, bad file name " << endl;
|
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| 440 | exit( EXIT_FAILURE );
|
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| 441 | } // if
|
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| 442 |
|
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| 443 | cfa_cpp_out = cfa_cpp_out.substr( 0, dot ) + ".ifa";
|
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| 444 | if ( creat( cfa_cpp_out.c_str(), 0666 ) == -1 ) {
|
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| 445 | perror( "CC1 Translator error: stage 2, creat" );
|
|---|
| 446 | exit( EXIT_FAILURE );
|
|---|
| 447 | } // if
|
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| 448 | } else {
|
|---|
| 449 | tmpfilefd = mkstemps( tmpname, 4 );
|
|---|
| 450 | if ( tmpfilefd == -1 ) {
|
|---|
| 451 | perror( "CC1 Translator error: stage 2, mkstemp" );
|
|---|
| 452 | exit( EXIT_FAILURE );
|
|---|
| 453 | } // if
|
|---|
| 454 | cfa_cpp_out = tmpname;
|
|---|
| 455 | } // if
|
|---|
| 456 | #ifdef __DEBUG_H__
|
|---|
| 457 | cerr << "cfa_cpp_out: " << cfa_cpp_out << endl;
|
|---|
| 458 | #endif // __DEBUG_H__
|
|---|
| 459 | } // if
|
|---|
| 460 |
|
|---|
| 461 | // If -CFA flag specified, run the cfa-cpp preprocessor on the temporary file, and output is written to standard
|
|---|
| 462 | // output. Otherwise, run the cfa-cpp preprocessor on the temporary file and save the result into the output file.
|
|---|
| 463 |
|
|---|
| 464 | if ( fork() == 0 ) { // child runs CFA
|
|---|
| 465 | cargs[0] = ( *new string( bprefix + "cfa-cpp" ) ).c_str();
|
|---|
| 466 | cargs[ncargs++] = cpp_in;
|
|---|
| 467 |
|
|---|
| 468 | if ( CFA_flag ) { // run cfa-cpp ?
|
|---|
| 469 | if ( o_file.size() != 0 ) { // location for output
|
|---|
| 470 | cargs[ncargs++] = ( *new string( o_file.c_str() ) ).c_str();
|
|---|
| 471 | } // if
|
|---|
| 472 | } else {
|
|---|
| 473 | cargs[ncargs++] = cfa_cpp_out.c_str();
|
|---|
| 474 | } // if
|
|---|
| 475 |
|
|---|
| 476 | cargs[ncargs++] = color_names[color_arg];
|
|---|
| 477 |
|
|---|
| 478 | cargs[ncargs] = nullptr; // terminate argument list
|
|---|
| 479 |
|
|---|
| 480 | #ifdef __DEBUG_H__
|
|---|
| 481 | for ( int i = 0; cargs[i] != nullptr; i += 1 ) {
|
|---|
| 482 | cerr << cargs[i] << " ";
|
|---|
| 483 | } // for
|
|---|
| 484 | cerr << endl;
|
|---|
| 485 | #endif // __DEBUG_H__
|
|---|
| 486 |
|
|---|
| 487 | execvp( cargs[0], (char * const *)cargs ); // should not return
|
|---|
| 488 | perror( "CC1 Translator error: stage 2 cfa-cpp, execvp" );
|
|---|
| 489 | cerr << " invoked " << cargs[0] << endl;
|
|---|
| 490 | exit( EXIT_FAILURE );
|
|---|
| 491 | } // if
|
|---|
| 492 |
|
|---|
| 493 | wait( &code ); // wait for child to finish
|
|---|
| 494 |
|
|---|
| 495 | if ( WIFSIGNALED(code) ) { // child failed ?
|
|---|
| 496 | rmtmpfile(); // remove tmpname
|
|---|
| 497 | cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;
|
|---|
| 498 | exit( EXIT_FAILURE );
|
|---|
| 499 | } // if
|
|---|
| 500 |
|
|---|
| 501 | if ( CFA_flag ) { // no tmpfile created
|
|---|
| 502 | exit( WEXITSTATUS( code ) ); // stop regardless of success or failure
|
|---|
| 503 | } // if
|
|---|
| 504 |
|
|---|
| 505 | #ifdef __DEBUG_H__
|
|---|
| 506 | cerr << "return code from cfa-cpp:" << WEXITSTATUS(code) << endl;
|
|---|
| 507 | #endif // __DEBUG_H__
|
|---|
| 508 |
|
|---|
| 509 | if ( WEXITSTATUS(code) ) { // child error ?
|
|---|
| 510 | rmtmpfile(); // remove tmpname
|
|---|
| 511 | exit( WEXITSTATUS( code ) ); // do not continue
|
|---|
| 512 | } // if
|
|---|
| 513 |
|
|---|
| 514 | #ifdef __DEBUG_H__
|
|---|
| 515 | cerr << "args:";
|
|---|
| 516 | for ( int i = 1; i < nargs; i += 1 ) {
|
|---|
| 517 | cerr << " " << args[i];
|
|---|
| 518 | } // for
|
|---|
| 519 | cerr << " " << cpp_in << endl;
|
|---|
| 520 | #endif // __DEBUG_H__
|
|---|
| 521 |
|
|---|
| 522 | if ( fork() == 0 ) { // child runs CFA
|
|---|
| 523 | args[0] = compiler_path.c_str();
|
|---|
| 524 | args[nargs++] = "-S"; // only compile and put assembler output in specified file
|
|---|
| 525 | args[nargs++] = "-x";
|
|---|
| 526 | args[nargs++] = "cpp-output";
|
|---|
| 527 |
|
|---|
| 528 | args[nargs++] = cfa_cpp_out.c_str();
|
|---|
| 529 | args[nargs] = nullptr; // terminate argument list
|
|---|
| 530 |
|
|---|
| 531 | #ifdef __DEBUG_H__
|
|---|
| 532 | cerr << "stage2 nargs: " << nargs << endl;
|
|---|
| 533 | for ( int i = 0; args[i] != nullptr; i += 1 ) {
|
|---|
| 534 | cerr << args[i] << " ";
|
|---|
| 535 | } // for
|
|---|
| 536 | cerr << endl;
|
|---|
| 537 | #endif // __DEBUG_H__
|
|---|
| 538 |
|
|---|
| 539 | execvp( args[0], (char * const *)args ); // should not return
|
|---|
| 540 | perror( "CC1 Translator error: stage 2 cc1, execvp" );
|
|---|
| 541 | cerr << " invoked " << args[0] << endl;
|
|---|
| 542 | exit( EXIT_FAILURE ); // tell gcc not to go any further
|
|---|
| 543 | } // if
|
|---|
| 544 |
|
|---|
| 545 | wait( &code ); // wait for child to finish
|
|---|
| 546 | rmtmpfile(); // remove tmpname
|
|---|
| 547 |
|
|---|
| 548 | if ( WIFSIGNALED(code) ) { // child failed ?
|
|---|
| 549 | cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;
|
|---|
| 550 | exit( EXIT_FAILURE );
|
|---|
| 551 | } // if
|
|---|
| 552 |
|
|---|
| 553 | #ifdef __DEBUG_H__
|
|---|
| 554 | cerr << "return code from gcc cc1:" << WEXITSTATUS(code) << endl;
|
|---|
| 555 | #endif // __DEBUG_H__
|
|---|
| 556 |
|
|---|
| 557 | exit( WEXITSTATUS( code ) ); // stop regardless of success or failure
|
|---|
| 558 | } // Stage2
|
|---|
| 559 |
|
|---|
| 560 |
|
|---|
| 561 | // This program is called twice because of the -no-integrated-cpp. The calls are differentiated by the first
|
|---|
| 562 | // command-line argument. The first call replaces the traditional cpp pass to preprocess the C program. The second call
|
|---|
| 563 | // is to the compiler, which is broken into two steps: preprocess again with cfa-cpp and then call gcc to compile the
|
|---|
| 564 | // doubly preprocessed program.
|
|---|
| 565 |
|
|---|
| 566 | int main( const int argc, const char * const argv[], __attribute__((unused)) const char * const env[] ) {
|
|---|
| 567 | #ifdef __DEBUG_H__
|
|---|
| 568 | for ( int i = 0; env[i] != nullptr; i += 1 ) {
|
|---|
| 569 | cerr << env[i] << endl;
|
|---|
| 570 | } // for
|
|---|
| 571 | #endif // __DEBUG_H__
|
|---|
| 572 |
|
|---|
| 573 | signal( SIGINT, sigTermHandler );
|
|---|
| 574 | signal( SIGTERM, sigTermHandler );
|
|---|
| 575 |
|
|---|
| 576 | string arg( argv[1] );
|
|---|
| 577 |
|
|---|
| 578 | // Currently, stage 1 starts with flag -E and stage 2 with flag -fpreprocessed.
|
|---|
| 579 |
|
|---|
| 580 | if ( arg == "-E" ) {
|
|---|
| 581 | Stage1( argc, argv );
|
|---|
| 582 | } else if ( arg == "-fpreprocessed" ) {
|
|---|
| 583 | Stage2( argc, argv );
|
|---|
| 584 | } else {
|
|---|
| 585 | cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl;
|
|---|
| 586 | exit( EXIT_FAILURE );
|
|---|
| 587 | } // if
|
|---|
| 588 | } // main
|
|---|
| 589 |
|
|---|
| 590 | // Local Variables: //
|
|---|
| 591 | // tab-width: 4 //
|
|---|
| 592 | // mode: c++ //
|
|---|
| 593 | // compile-command: "make install" //
|
|---|
| 594 | // End: //
|
|---|
