source: src/main.cpp@ 95707a3

Last change on this file since 95707a3 was f660b10, checked in by Andrew Beach <ajbeach@…>, 12 months ago

Moved the backtrace/signal code to the bottom of the main file (so people don't have to scroll past it.
  • Property mode set to 100644
File size: 28.3 KB
RevLine 
[b87a5ed]1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
[c92bdcc]7// main.cpp --
[b87a5ed]8//
[3e96559]9// Author : Peter Buhr and Rob Schluntz
[b87a5ed]10// Created On : Fri May 15 23:12:02 2015
[372b6d3]11// Last Modified By : Peter A. Buhr
[d66a43b]12// Last Modified On : Sun Jun 23 16:38:09 2024
13// Update Count : 691
[b87a5ed]14//
15
[bf2438c]16#include <cxxabi.h> // for __cxa_demangle
17#include <execinfo.h> // for backtrace, backtrace_symbols
18#include <getopt.h> // for no_argument, optind, geto...
[08fc48f]19#include <cassert> // for assertf
[bf2438c]20#include <cstdio> // for fopen, FILE, fclose, stdin
21#include <cstdlib> // for exit, free, abort, EXIT_F...
[bffcd66]22#include <csignal> // for signal, SIGABRT, SIGSEGV
[bf2438c]23#include <cstring> // for index
[be9288a]24#include <fstream> // for ofstream
[bf2438c]25#include <iostream> // for operator<<, basic_ostream
[62ce290]26#include <iomanip>
[bf2438c]27#include <iterator> // for back_inserter
28#include <list> // for list
[08fc48f]29#include <string> // for char_traits, operator<<
[e6955b1]30
[bccd70a]31#include "AST/Pass.hpp" // for pass_visitor_stats
[0b5e780]32#include "AST/Print.hpp" // for printAll
[bccd70a]33#include "AST/TranslationUnit.hpp" // for TranslationUnit
[52f9804]34#include "AST/Util.hpp" // for checkInvariants
[b2ea0cd]35#include "CompilationState.hpp"
[bf2438c]36#include "../config.h" // for CFA_LIBDIR
[c92bdcc]37#include "CodeGen/FixMain.hpp" // for FixMain
38#include "CodeGen/FixNames.hpp" // for fixNames
39#include "CodeGen/Generate.hpp" // for generate
40#include "CodeGen/LinkOnce.hpp" // for translateLinkOnce
[f57faf6f]41#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
[55cbff8]42#include "Common/DeclStats.hpp" // for printDeclStats
43#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
[c92bdcc]44#include "Common/Stats.hpp" // for Stats
45#include "Common/Utility.hpp" // for deleteAll, filter, printAll
[3dd8f42]46#include "Concurrency/Actors.hpp" // for implementActors
[eb779d5]47#include "Concurrency/Corun.hpp" // for implementCorun
[c92bdcc]48#include "Concurrency/Keywords.hpp" // for implementMutex, implement...
49#include "Concurrency/Waitfor.hpp" // for generateWaitfor
[c86b08d]50#include "Concurrency/Waituntil.hpp" // for generateWaitUntil
[c92bdcc]51#include "ControlStruct/ExceptDecl.hpp" // for translateExcept
52#include "ControlStruct/ExceptTranslate.hpp"// for translateThrows, translat...
[b8ab91a]53#include "ControlStruct/FixLabels.hpp" // for fixLabels
[a488783]54#include "ControlStruct/HoistControlDecls.hpp" // hoistControlDecls
[d66a43b]55#include "ControlStruct/TranslateEnumRange.hpp" // translateEnumRange
[c92bdcc]56#include "GenPoly/Box.hpp" // for box
57#include "GenPoly/InstantiateGeneric.hpp" // for instantiateGeneric
58#include "GenPoly/Lvalue.hpp" // for convertLvalue
59#include "GenPoly/Specialize.hpp" // for convertSpecializations
60#include "InitTweak/FixInit.hpp" // for fix
61#include "InitTweak/GenInit.hpp" // for genInit
[b2ea0cd]62#include "MakeLibCfa.hpp" // for makeLibCfa
[cbd1ba8]63#include "Parser/RunParser.hpp" // for buildList, dumpParseTree,...
[1622af5]64#include "ResolvExpr/CandidatePrinter.hpp" // for printCandidates
[d3652df]65#include "ResolvExpr/EraseWith.hpp" // for eraseWith
[c92bdcc]66#include "ResolvExpr/Resolver.hpp" // for resolve
67#include "Tuples/Tuples.hpp" // for expandMemberTuples, expan...
[a488783]68#include "Validate/Autogen.hpp" // for autogenerateRoutines
[82a5ea2]69#include "Validate/CheckAssertions.hpp" // for checkAssertions
[298fe57]70#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
71#include "Validate/EliminateTypedef.hpp" // for eliminateTypedef
[1931bb01]72#include "Validate/EnumAndPointerDecay.hpp" // for decayEnumsAndPointers
[c92bdcc]73#include "Validate/FindSpecialDecls.hpp" // for findGlobalDecls
[298fe57]74#include "Validate/FixQualifiedTypes.hpp" // for fixQualifiedTypes
[1931bb01]75#include "Validate/FixReturnTypes.hpp" // for fixReturnTypes
[9490621]76#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
[298fe57]77#include "Validate/GenericParameter.hpp" // for fillGenericParameters, tr...
78#include "Validate/HoistStruct.hpp" // for hoistStruct
[1931bb01]79#include "Validate/HoistTypeDecls.hpp" // for hoistTypeDecls
[c778ef1]80#include "Validate/ImplementEnumFunc.hpp" // for implementEnumFunc
[ce36b55]81#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
82#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
[37b3151]83#include "Validate/LinkInstanceTypes.hpp" // for linkInstanceTypes
[1931bb01]84#include "Validate/ReplaceTypedef.hpp" // for replaceTypedef
[4ec9513]85#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
[1931bb01]86#include "Validate/VerifyCtorDtorAssign.hpp" // for verifyCtorDtorAssign
[c92bdcc]87#include "Virtual/ExpandCasts.hpp" // for expandCasts
[37b3151]88#include "Virtual/VirtualDtor.hpp" // for implementVirtDtors
[51b73452]89
[2c38b15]90using namespace std;
91
[3e96559]92static void NewPass( const char * const name ) {
93 Stats::Heap::newPass( name );
[1cb7fab2]94 using namespace Stats::Counters;
[b8665e3]95 {
[f43146e4]96 static auto group = build<CounterGroup>( "Pass Visitor Template" );
[3e96559]97 auto pass = build<CounterGroup>( name, group );
[f43146e4]98 ast::pass_visitor_stats.depth = 0;
99 ast::pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
100 ast::pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
[b8665e3]101 }
[675716e]102}
103
[52f9804]104#define PASS( name, pass, unit, ... ) \
[ecaeac6e]105 if ( errorp ) { cerr << name << endl; } \
[675716e]106 NewPass(name); \
[4f97937]107 Stats::Time::StartBlock(name); \
[52f9804]108 pass(unit,##__VA_ARGS__); \
109 Stats::Time::StopBlock(); \
110 if ( invariant ) { \
[5b25c49]111 ast::checkInvariants(unit); \
[52f9804]112 }
113
114#define DUMP( cond, unit ) \
115 if ( cond ) { \
[a758169]116 dump( std::move( unit ) ); \
[52f9804]117 return EXIT_SUCCESS; \
118 }
[0da3e2c]119
[ef22ad6]120static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
[dee1f89]121
[bffcd66]122static string PreludeDirector = "";
[4dcaed2]123
[77d601f]124static void parse_cmdline( int argc, char * argv[] );
[e499381]125static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
[e6955b1]126
[f660b10]127static void backtrace( int start );
128static void initSignals();
[b542bfb]129
[cbaee0d]130int main( int argc, char * argv[] ) {
[3b8e52c]131 FILE * input; // use FILE rather than istream because yyin is FILE
[d08beee]132 ostream * output = & cout;
[64b3cda]133 ast::TranslationUnit transUnit;
[e6955b1]134
[f660b10]135 initSignals();
[b87a5ed]136
[bffcd66]137 // cout << "main" << endl;
[44bca7f]138 // for ( int i = 0; i < argc; i += 1 ) {
[bffcd66]139 // cout << '\t' << argv[i] << endl;
[44bca7f]140 // } // for
141
[e0bd0f9]142 parse_cmdline( argc, argv ); // process command-line arguments
[b87a5ed]143
[ef22ad6]144 if ( waiting_for_gdb ) {
[bffcd66]145 cerr << "Waiting for gdb" << endl;
146 cerr << "run :" << endl;
147 cerr << " gdb attach " << getpid() << endl;
[dee1f89]148 raise(SIGSTOP);
[ef22ad6]149 } // if
[dee1f89]150
[b87a5ed]151 try {
[81419b5]152 // choose to read the program from a file or stdin
[3b8e52c]153 if ( optind < argc ) { // any commands after the flags ? => input file name
[b87a5ed]154 input = fopen( argv[ optind ], "r" );
[e0bd0f9]155 assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
[b87a5ed]156 optind += 1;
[3b8e52c]157 } else { // no input file name
[b87a5ed]158 input = stdin;
159 } // if
160
[79eaeb7]161 Stats::Time::StartGlobal();
[3c0d4cd]162 NewPass("Parse");
163 Stats::Time::StartBlock("Parse");
[675716e]164
[159c62e]165 // read in the builtins, extras, and the prelude
[de62360d]166 if ( ! nopreludep ) { // include gcc builtins
[faf8857]167 // -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
[807ce84]168
[37fe352]169 assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
[4dcaed2]170
[807ce84]171 // Read to gcc builtins, if not generating the cfa library
[be3f163]172 FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cfa").c_str(), "r" );
[a758169]173 assertf( gcc_builtins, "cannot open gcc-builtins.cfa\n" );
[f2f595d7]174 parse( gcc_builtins, ast::Linkage::Compiler );
[81419b5]175
[159c62e]176 // read the extra prelude in, if not generating the cfa library
[be3f163]177 FILE * extras = fopen( (PreludeDirector + "/extras.cfa").c_str(), "r" );
[a758169]178 assertf( extras, "cannot open extras.cfa\n" );
[f2f595d7]179 parse( extras, ast::Linkage::BuiltinC );
[81419b5]180 if ( ! libcfap ) {
[faf8857]181 // read the prelude in, if not generating the cfa library
[e523b07]182 FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
183 assertf( prelude, "cannot open prelude.cfa\n" );
[f2f595d7]184 parse( prelude, ast::Linkage::Intrinsic );
[fa4805f]185
186 // Read to cfa builtins, if not generating the cfa library
[be3f163]187 FILE * builtins = fopen( (PreludeDirector + "/builtins.cfa").c_str(), "r" );
[a758169]188 assertf( builtins, "cannot open builtins.cfa\n" );
[f2f595d7]189 parse( builtins, ast::Linkage::BuiltinCFA );
[b87a5ed]190 } // if
191 } // if
[81419b5]192
[f2f595d7]193 parse( input, libcfap ? ast::Linkage::Intrinsic : ast::Linkage::Cforall, yydebug );
[71f4e4f]194
[64b3cda]195 transUnit = buildUnit();
[b87a5ed]196
[a758169]197 DUMP( astp, transUnit );
[b87a5ed]198
[3c0d4cd]199 Stats::Time::StopBlock();
[036dd5f]200
[52f9804]201 PASS( "Hoist Type Decls", Validate::hoistTypeDecls, transUnit );
202
203 PASS( "Translate Exception Declarations", ControlStruct::translateExcept, transUnit );
[a758169]204 DUMP( exdeclp, transUnit );
[52f9804]205 PASS( "Verify Ctor, Dtor & Assign", Validate::verifyCtorDtorAssign, transUnit );
206 PASS( "Replace Typedefs", Validate::replaceTypedef, transUnit );
207 PASS( "Fix Return Types", Validate::fixReturnTypes, transUnit );
[82a5ea2]208 PASS( "Check Assertions", Validate::checkAssertions, transUnit );
[52f9804]209 PASS( "Enum and Pointer Decay", Validate::decayEnumsAndPointers, transUnit );
210
[37b3151]211 PASS( "Link Instance Types", Validate::linkInstanceTypes, transUnit );
[52f9804]212
[14c0f7b]213 PASS( "Forall Pointer Decay", Validate::decayForallPointers, transUnit );
[52f9804]214 PASS( "Fix Qualified Types", Validate::fixQualifiedTypes, transUnit );
215 PASS( "Eliminate Typedef", Validate::eliminateTypedef, transUnit );
[2c38b15]216 PASS( "Hoist Struct", Validate::hoistStruct, transUnit );
[52f9804]217 PASS( "Validate Generic Parameters", Validate::fillGenericParameters, transUnit );
[525f7ad]218 PASS( "Translate Enum Range Expression", ControlStruct::translateEnumRange, transUnit );
[52f9804]219 PASS( "Translate Dimensions", Validate::translateDimensionParameters, transUnit );
[eb7586e]220 PASS( "Generate Enum Attributes Functions", Validate::implementEnumFunc, transUnit );
[52f9804]221 PASS( "Check Function Returns", Validate::checkReturnStatements, transUnit );
222 PASS( "Fix Return Statements", InitTweak::fixReturnStatements, transUnit );
223 PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords, transUnit );
[14c0f7b]224 PASS( "Fix Unique Ids", Validate::fixUniqueIds, transUnit );
[cf3da24]225 PASS( "Implement Corun", Concurrency::implementCorun, transUnit );
[b6923b17]226 PASS( "Fix Label Address", Validate::fixLabelAddresses, transUnit );
227 PASS( "Fix Labels", ControlStruct::fixLabels, transUnit );
[52f9804]228 PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls, transUnit );
229
230 PASS( "Generate Autogen Routines", Validate::autogenerateRoutines, transUnit );
[7fe4adbb]231
[52f9804]232 PASS( "Implement Actors", Concurrency::implementActors, transUnit );
233 PASS( "Implement Virtual Destructors", Virtual::implementVirtDtors, transUnit );
234 PASS( "Implement Mutex", Concurrency::implementMutex, transUnit );
235 PASS( "Implement Thread Start", Concurrency::implementThreadStarter, transUnit );
236 PASS( "Compound Literal", Validate::handleCompoundLiterals, transUnit );
237 PASS( "Set Length From Initializer", Validate::setLengthFromInitializer, transUnit );
238 PASS( "Find Global Decls", Validate::findGlobalDecls, transUnit );
[09366b8]239
240 if ( symtabp ) {
241 return EXIT_SUCCESS;
242 } // if
[ccbc65c]243
[09366b8]244 if ( expraltp ) {
245 ResolvExpr::printCandidates( transUnit );
246 return EXIT_SUCCESS;
247 } // if
[3606fe4]248
[a758169]249 DUMP( validp, transUnit );
[6a896b0]250
[52f9804]251 PASS( "Translate Throws", ControlStruct::translateThrows, transUnit );
[14c0f7b]252 PASS( "Implement Waituntil", Concurrency::generateWaitUntil, transUnit );
[52f9804]253 PASS( "Fix Names", CodeGen::fixNames, transUnit );
254 PASS( "Gen Init", InitTweak::genInit, transUnit );
255 PASS( "Expand Member Tuples" , Tuples::expandMemberTuples, transUnit );
[ce36b55]256
[09366b8]257 if ( libcfap ) {
258 // Generate the bodies of cfa library functions.
259 LibCfa::makeLibCfa( transUnit );
260 } // if
[1622af5]261
[09366b8]262 if ( declstatsp ) {
263 printDeclStats( transUnit );
264 return EXIT_SUCCESS;
265 } // if
[1622af5]266
[a758169]267 DUMP( bresolvep, transUnit );
[1622af5]268
[09366b8]269 if ( resolvprotop ) {
270 dumpAsResolverProto( transUnit );
271 return EXIT_SUCCESS;
272 } // if
[9f5a19fa]273
[52f9804]274 PASS( "Resolve", ResolvExpr::resolve, transUnit );
[a758169]275 DUMP( exprp, transUnit );
[af746cc]276 PASS( "Fix Init", InitTweak::fix, transUnit, buildingLibrary() ); // Here
[d3652df]277 PASS( "Erase With", ResolvExpr::eraseWith, transUnit );
[68fe946e]278
[09366b8]279 // fix ObjectDecl - replaces ConstructorInit nodes
[a758169]280 DUMP( ctorinitp, transUnit );
[68fe946e]281
[09366b8]282 // Currently not working due to unresolved issues with UniqueExpr
[52f9804]283 PASS( "Expand Unique Expr", Tuples::expandUniqueExpr, transUnit ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent passes don't need to worry about double-visiting a unique expr - needs to go after InitTweak::fix so that copy constructed return declarations are reused
[68fe946e]284
[52f9804]285 PASS( "Translate Tries", ControlStruct::translateTries, transUnit );
286 PASS( "Gen Waitfor", Concurrency::generateWaitFor, transUnit );
[61efa42]287 PASS( "Fix Main Linkage", CodeGen::fixMainLinkage, transUnit, !nomainp );
[4615ac8]288
[09366b8]289 // Needs to happen before tuple types are expanded.
[52f9804]290 PASS( "Convert Specializations", GenPoly::convertSpecializations, transUnit );
[81419b5]291
[52f9804]292 PASS( "Expand Tuples", Tuples::expandTuples, transUnit );
[a758169]293 DUMP( tuplep, transUnit );
[626dbc10]294
[09366b8]295 // Must come after Translate Tries.
[52f9804]296 PASS( "Virtual Expand Casts", Virtual::expandCasts, transUnit );
[141b786]297
[52f9804]298 PASS( "Instantiate Generics", GenPoly::instantiateGeneric, transUnit );
[a758169]299 DUMP( genericsp, transUnit );
[b4f8808]300
[52f9804]301 PASS( "Convert L-Value", GenPoly::convertLvalue, transUnit );
[a758169]302 DUMP( bboxp, transUnit );
[1ee0a4da]303 PASS( "Box", GenPoly::box, transUnit );
[3cbe320]304 PASS( "Link-Once", CodeGen::translateLinkOnce, transUnit );
[7fffb1b]305
[aff7e86]306 // Code has been lowered to C, now we can start generation.
307
[a758169]308 DUMP( bcodegenp, transUnit );
[8905f56]309
[13de47bc]310 if ( optind < argc ) { // any commands after the flags and input file ? => output file name
311 output = new ofstream( argv[ optind ] );
312 } // if
[0270824]313
[8941b6b]314 PASS( "Code Gen", CodeGen::generate, transUnit, *output, !genproto, prettycodegenp, true, linemarks, false );
[61efa42]315 CodeGen::fixMainInvoke( transUnit, *output, (PreludeDirector + "/bootloader.c").c_str() );
[8941b6b]316
[e6955b1]317 if ( output != &cout ) {
[b87a5ed]318 delete output;
319 } // if
[77d601f]320 } catch ( SemanticErrorException & e ) {
[b87a5ed]321 if ( errorp ) {
[e6955b1]322 cerr << "---AST at error:---" << endl;
[0b5e780]323 dump( std::move( transUnit ), cerr );
[e6955b1]324 cerr << endl << "---End of AST, begin error message:---\n" << endl;
[926af74]325 } // if
[d55d7a6]326 e.print();
[e6955b1]327 if ( output != &cout ) {
[b87a5ed]328 delete output;
329 } // if
[3e96559]330 return EXIT_FAILURE;
[77d601f]331 } catch ( std::bad_alloc & ) {
332 cerr << "*cfa-cpp compilation error* std::bad_alloc" << endl;
333 backtrace( 1 );
334 abort();
[3e96559]335 } catch ( ... ) {
[bffcd66]336 exception_ptr eptr = current_exception();
[4990812]337 try {
338 if (eptr) {
[bffcd66]339 rethrow_exception(eptr);
[3e96559]340 } else {
[77d601f]341 cerr << "*cfa-cpp compilation error* exception uncaught and unknown" << endl;
[3e96559]342 } // if
[77d601f]343 } catch( const exception & e ) {
344 cerr << "*cfa-cpp compilation error* uncaught exception \"" << e.what() << "\"\n";
[3e96559]345 } // try
346 return EXIT_FAILURE;
347 } // try
[b87a5ed]348
[7fe4adbb]349 // This pseudo-pass is used to get more accurate heap statistics.
350 NewPass("Clean-up");
351 Stats::Time::StartBlock("Clean-Up");
352 transUnit.global = ast::TranslationGlobal();
353 transUnit.decls.clear();
354 Stats::Time::StopBlock();
355
[1cb7fab2]356 Stats::print();
[3e96559]357 return EXIT_SUCCESS;
[d9a0e76]358} // main
[51b73452]359
[0da3e2c]360
[372b6d3]361static const char optstring[] = ":c:ghilLmNnpdP:S:twW:D:";
[3e96559]362
[62ce290]363enum { PreludeDir = 128 };
[3e96559]364static struct option long_opts[] = {
[1a69a90]365 { "colors", required_argument, nullptr, 'c' },
366 { "gdb", no_argument, nullptr, 'g' },
[3e96559]367 { "help", no_argument, nullptr, 'h' },
[372b6d3]368 { "invariant", no_argument, nullptr, 'i' },
[3e96559]369 { "libcfa", no_argument, nullptr, 'l' },
[62ce290]370 { "linemarks", no_argument, nullptr, 'L' },
[372b6d3]371 { "no-main", no_argument, nullptr, 'm' },
[62ce290]372 { "no-linemarks", no_argument, nullptr, 'N' },
373 { "no-prelude", no_argument, nullptr, 'n' },
[3e96559]374 { "prototypes", no_argument, nullptr, 'p' },
[7215000]375 { "deterministic-out", no_argument, nullptr, 'd' },
[62ce290]376 { "print", required_argument, nullptr, 'P' },
377 { "prelude-dir", required_argument, nullptr, PreludeDir },
378 { "statistics", required_argument, nullptr, 'S' },
[3e96559]379 { "tree", no_argument, nullptr, 't' },
380 { "", no_argument, nullptr, 0 }, // -w
381 { "", no_argument, nullptr, 0 }, // -W
382 { "", no_argument, nullptr, 0 }, // -D
383 { nullptr, 0, nullptr, 0 }
384}; // long_opts
385
386static const char * description[] = {
[aa88cb9a]387 "diagnostic color: never, always, auto", // -c
[3e9de01]388 "wait for gdb to attach", // -g
[aa88cb9a]389 "print translator help message", // -h
[372b6d3]390 "invariant checking during AST passes", // -i
[3e9de01]391 "generate libcfa.c", // -l
392 "generate line marks", // -L
393 "do not replace main", // -m
394 "do not generate line marks", // -N
395 "do not read prelude", // -n
[aa88cb9a]396 "do not generate prelude prototypes => prelude not printed", // -p
[3e9de01]397 "only print deterministic output", // -d
398 "print", // -P
[62ce290]399 "<directory> prelude directory for debug/nodebug", // no flag
[aa88cb9a]400 "<option-list> enable profiling information: counters, heap, time, all, none", // -S
[3e9de01]401 "building cfa standard lib", // -t
402 "", // -w
403 "", // -W
404 "", // -D
[3e96559]405}; // description
406
[0c0f548]407static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
[62ce290]408
409static struct Printopts {
410 const char * name;
411 int & flag;
412 int val;
413 const char * descript;
414} printopts[] = {
[0e464f6]415 { "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
416 { "asterr", errorp, true, "print AST on error" },
[12f671e]417 { "declstats", declstatsp, true, "print code property statistics" },
418 { "parse", yydebug, true, "print yacc (parsing) debug information" },
[62ce290]419 { "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
420 { "rproto", resolvprotop, true, "resolver-proto instance" },
[0e464f6]421 { "rsteps", resolvep, true, "print resolver steps" },
[5f917740]422 // AST dumps
[0e464f6]423 { "ast", astp, true, "print AST after parsing" },
[5f917740]424 { "excpdecl", exdeclp, true, "print AST after translating exception decls" },
[0e464f6]425 { "symevt", symtabp, true, "print AST after symbol table events" },
[5f917740]426 { "expralt", expraltp, true, "print AST after expressions alternatives" },
427 { "valdecl", validp, true, "print AST after declaration validation pass" },
428 { "bresolver", bresolvep, true, "print AST before resolver step" },
429 { "expranly", exprp, true, "print AST after expression analysis" },
[0e464f6]430 { "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
431 { "tuple", tuplep, true, "print AST after tuple expansion" },
[5f917740]432 { "instgen", genericsp, true, "print AST after instantiate generics" },
433 { "bbox", bboxp, true, "print AST before box pass" },
[cdb4eaa]434 { "bcodegen", bcodegenp, true, "print AST before code generation" }
[62ce290]435};
436enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
437
[77d601f]438static void usage( char * argv[] ) {
[e0bd0f9]439 cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
[3e96559]440 int i = 0, j = 1; // j skips starting colon
441 for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
442 if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
[62ce290]443 if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
444 cout << " -" << optstring[j] << ",";
445 } else { // no flag
446 j -= 1; // compensate
447 cout << " ";
448 } // if
449 cout << " --" << left << setw(12) << long_opts[i].name << " ";
450 if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
451 cout << "one of: " << endl;
452 for ( int i = 0; i < printoptsSize; i += 1 ) {
453 cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
454 } // for
455 } else {
456 cout << description[i] << endl;
457 } // if
[3e96559]458 } // if
[62ce290]459 if ( optstring[j + 1] == ':' ) j += 1;
[3e96559]460 } // for
461 if ( long_opts[i].name != 0 || optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
462 exit( EXIT_FAILURE );
463} // usage
464
[e0bd0f9]465static void parse_cmdline( int argc, char * argv[] ) {
[0da3e2c]466 opterr = 0; // (global) prevent getopt from printing error messages
467
[c5e5109]468 bool Wsuppress = false, Werror = false;
[0da3e2c]469 int c;
[3e96559]470 while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
[0da3e2c]471 switch ( c ) {
[1a69a90]472 case 'c': // diagnostic colors
473 if ( strcmp( optarg, "always" ) == 0 ) {
474 ErrorHelpers::colors = ErrorHelpers::Colors::Always;
475 } else if ( strcmp( optarg, "never" ) == 0 ) {
476 ErrorHelpers::colors = ErrorHelpers::Colors::Never;
477 } else if ( strcmp( optarg, "auto" ) == 0 ) {
478 ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
479 } // if
480 break;
[3e96559]481 case 'h': // help message
482 usage( argv ); // no return
[53d3ab4b]483 break;
[372b6d3]484 case 'i': // invariant checking
485 invariant = true;
486 break;
[3e96559]487 case 'l': // generate libcfa.c
[0da3e2c]488 libcfap = true;
489 break;
[62ce290]490 case 'L': // generate line marks
[6de43b6]491 linemarks = true;
[c850687]492 break;
[3e96559]493 case 'm': // do not replace main
494 nomainp = true;
[0da3e2c]495 break;
[62ce290]496 case 'N': // do not generate line marks
[6de43b6]497 linemarks = false;
[c59bde6]498 break;
[62ce290]499 case 'n': // do not read prelude
[3e96559]500 nopreludep = true;
[0da3e2c]501 break;
[62ce290]502 case 'p': // generate prototypes for prelude functions
503 genproto = true;
[0da3e2c]504 break;
[7215000]505 case 'd': // don't print non-deterministic output
[a77257be]506 deterministic_output = true;
507 break;
[62ce290]508 case 'P': // print options
509 for ( int i = 0;; i += 1 ) {
510 if ( i == printoptsSize ) {
511 cout << "Unknown --print option " << optarg << endl;
512 goto Default;
513 } // if
514 if ( strcmp( optarg, printopts[i].name ) == 0 ) {
515 printopts[i].flag = printopts[i].val;
516 break;
517 } // if
518 } // for
[0da3e2c]519 break;
[62ce290]520 case PreludeDir: // prelude directory for debug/nodebug, hidden
521 PreludeDirector = optarg;
[3b3491b6]522 break;
[3e96559]523 case 'S': // enable profiling information, argument comma separated list of names
524 Stats::parse_params( optarg );
[ebcc940]525 break;
[dee1f89]526 case 't': // building cfa stdlib
[0da3e2c]527 treep = true;
528 break;
[dee1f89]529 case 'g': // wait for gdb
530 waiting_for_gdb = true;
531 break;
[3e96559]532 case 'w': // suppress all warnings, hidden
[c5e5109]533 Wsuppress = true;
[44bca7f]534 break;
[3e96559]535 case 'W': // coordinate gcc -W with CFA, hidden
[44bca7f]536 if ( strcmp( optarg, "all" ) == 0 ) {
[68e9ace]537 SemanticWarning_EnableAll();
[44bca7f]538 } else if ( strcmp( optarg, "error" ) == 0 ) {
539 Werror = true;
540 } else {
541 char * warning = optarg;
542 Severity s;
543 if ( strncmp( optarg, "no-", 3 ) == 0 ) {
544 warning += 3;
545 s = Severity::Suppress;
546 } else {
547 s = Severity::Warn;
548 } // if
[68e9ace]549 SemanticWarning_Set( warning, s );
[44bca7f]550 } // if
551 break;
[3e96559]552 case 'D': // ignore -Dxxx, forwarded by cpp, hidden
[0da3e2c]553 break;
[3e96559]554 case '?': // unknown option
555 if ( optopt ) { // short option ?
556 cout << "Unknown option -" << (char)optopt << endl;
557 } else {
558 cout << "Unknown option " << argv[optind - 1] << endl;
559 } // if
560 goto Default;
561 case ':': // missing option
[ae47a23]562 if ( optopt ) { // short option ?
[3e96559]563 cout << "Missing option for -" << (char)optopt << endl;
[ae47a23]564 } else {
[3e96559]565 cout << "Missing option for " << argv[optind - 1] << endl;
[ae47a23]566 } // if
[3e96559]567 goto Default;
568 Default:
569 default:
570 usage( argv ); // no return
[0da3e2c]571 } // switch
572 } // while
[44bca7f]573
574 if ( Werror ) {
[68e9ace]575 SemanticWarning_WarningAsError();
[44bca7f]576 } // if
[c5e5109]577 if ( Wsuppress ) {
578 SemanticWarning_SuppressAll();
579 } // if
[44bca7f]580 // for ( const auto w : WarningFormats ) {
581 // cout << w.name << ' ' << (int)w.severity << endl;
582 // } // for
[0da3e2c]583} // parse_cmdline
584
[0b5e780]585static bool notPrelude( ast::ptr<ast::Decl> & decl ) {
586 return !decl->linkage.is_builtin;
587}
[926af74]588
[0b5e780]589static void dump( ast::TranslationUnit && unit, std::ostream & out ) {
590 // May filter out all prelude declarations.
[62ce290]591 if ( genproto ) {
[0b5e780]592 std::list<ast::ptr<ast::Decl>> decls;
593 std::copy_if( unit.decls.begin(), unit.decls.end(),
594 std::back_inserter( decls ), notPrelude );
595 decls.swap( unit.decls );
596 }
[1ab4ce2]597
[0b5e780]598 // May print as full dump or as code generation.
[e39241b]599 if ( codegenp ) {
[0b5e780]600 CodeGen::generate( unit, out, !genproto, prettycodegenp, false, false, false );
[e39241b]601 } else {
[0b5e780]602 ast::printAll( out, unit.decls );
603 }
[e499381]604}
605
[f660b10]606static void backtrace( int start ) { // skip first N stack frames
607 enum { Frames = 50, }; // maximum number of stack frames
608 void * array[Frames];
609 size_t size = ::backtrace( array, Frames );
610 char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
611
612 *index( messages[0], '(' ) = '\0'; // find executable name
613 cerr << "Stack back trace for: " << messages[0] << endl;
614
615 // skip last 2 stack frames after main
616 for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
617 char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
618
619 for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
620 if ( *p == '(' ) {
621 mangled_name = p;
622 } else if ( *p == '+' ) {
623 offset_begin = p;
624 } else if ( *p == ')' ) {
625 offset_end = p;
626 break;
627 } // if
628 } // for
629
630 // if line contains symbol, attempt to demangle
631 int frameNo = i - start;
632 if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
633 *mangled_name++ = '\0'; // delimit strings
634 *offset_begin++ = '\0';
635 *offset_end++ = '\0';
636
637 int status;
638 char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
639 // bug in __cxa_demangle for single-character lower-case non-mangled names
640 if ( status == 0 ) { // demangling successful ?
641 cerr << "(" << frameNo << ") " << messages[i] << " : "
642 << real_name << "+" << offset_begin << offset_end << endl;
643 } else { // otherwise, output mangled name
644 cerr << "(" << frameNo << ") " << messages[i] << " : "
645 << mangled_name << "(/*unknown*/)+" << offset_begin << offset_end << endl;
646 } // if
647
648 free( real_name );
649 } else { // otherwise, print the whole line
650 cerr << "(" << frameNo << ") " << messages[i] << endl;
651 } // if
652 } // for
653
654 free( messages );
655} // backtrace
656
657#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
658
659static void _Signal(struct sigaction & act, int sig, int flags ) {
660 sigemptyset( &act.sa_mask );
661 act.sa_flags = flags;
662
663 if ( sigaction( sig, &act, nullptr ) == -1 ) {
664 cerr << "*cfa-cpp compilation error* problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
665 _exit( EXIT_FAILURE );
666 } // if
667}
668
669static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
670 struct sigaction act;
671 act.sa_sigaction = (void (*)(int, siginfo_t *, void *))handler;
672 _Signal(act, sig, flags);
673} // Signal
674
675static void Signal( int sig, void (* handler)(int), int flags ) {
676 struct sigaction act;
677 act.sa_handler = handler;
678 _Signal(act, sig, flags);
679} // Signal
680
681static void sigSegvBusHandler( SIGPARMS ) {
682 if ( sfp->si_addr == nullptr ) {
683 cerr << "Null pointer (nullptr) dereference." << endl;
684 } else {
685 cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
686 << "Possible cause is reading outside the address space or writing to a protected area within the address space with an invalid pointer or subscript." << endl;
687 } // if
688 backtrace( 2 ); // skip first 2 stack frames
689 abort(); // cause core dump for debugging
690} // sigSegvBusHandler
691
692static void sigFpeHandler( SIGPARMS ) {
693 const char * msg;
694
695 switch ( sfp->si_code ) {
696 case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
697 case FPE_FLTOVF: msg = "overflow"; break;
698 case FPE_FLTUND: msg = "underflow"; break;
699 case FPE_FLTRES: msg = "inexact result"; break;
700 case FPE_FLTINV: msg = "invalid operation"; break;
701 default: msg = "unknown";
702 } // choose
703 cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
704 << "Possible cause is constant-expression evaluation invalid." << endl;
705 backtrace( 2 ); // skip first 2 stack frames
706 abort(); // cause core dump for debugging
707} // sigFpeHandler
708
709static void sigAbortHandler( SIGPARMS ) {
710 backtrace( 6 ); // skip first 6 stack frames
711 Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
712 raise( SIGABRT ); // reraise SIGABRT
713} // sigAbortHandler
714
715static void initSignals() {
716 Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
717 Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
718 Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
719 Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
720}
721
[51b73452]722// Local Variables: //
[b87a5ed]723// tab-width: 4 //
724// mode: c++ //
725// compile-command: "make install" //
[51b73452]726// End: //
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