source: src/main.cc@ fe84230

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new with_gc
Last change on this file since fe84230 was 0afffee, checked in by Peter A. Buhr <pabuhr@…>, 9 years ago

update stack trace on cfa error
  • Property mode set to 100644
File size: 13.2 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//
[71f4e4f]7// main.cc --
[b87a5ed]8//
[843054c2]9// Author : Richard C. Bilson
[b87a5ed]10// Created On : Fri May 15 23:12:02 2015
[dd51906]11// Last Modified By : Peter A. Buhr
[0afffee]12// Last Modified On : Sun Oct 30 10:11:38 2016
13// Update Count : 435
[b87a5ed]14//
15
[51b73452]16#include <iostream>
17#include <fstream>
[e6955b1]18#include <signal.h> // signal
19#include <getopt.h> // getopt
[0afffee]20#include <execinfo.h> // backtrace, backtrace_symbols
[e6955b1]21#include <cxxabi.h> // __cxa_demangle
[0afffee]22#include <cstring> // index
[e6955b1]23
24using namespace std;
25
[0da3e2c]26#include "Parser/lex.h"
27#include "Parser/parser.h"
28#include "Parser/TypedefTable.h"
[51b73452]29#include "GenPoly/Lvalue.h"
30#include "GenPoly/Specialize.h"
31#include "GenPoly/Box.h"
32#include "GenPoly/CopyParams.h"
[ea5daeb]33#include "GenPoly/InstantiateGeneric.h"
[51b73452]34#include "CodeGen/Generate.h"
35#include "CodeGen/FixNames.h"
36#include "ControlStruct/Mutate.h"
37#include "SymTab/Validate.h"
38#include "ResolvExpr/AlternativePrinter.h"
39#include "ResolvExpr/Resolver.h"
40#include "MakeLibCfa.h"
[a0fdbd5]41#include "InitTweak/GenInit.h"
[71f4e4f]42#include "InitTweak/FixInit.h"
[d3b7937]43#include "Common/UnimplementedError.h"
[51b73452]44#include "../config.h"
45
46using namespace std;
47
[e6955b1]48#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
[81419b5]49
[0da3e2c]50
[8b7ee09]51LinkageSpec::Spec linkage = LinkageSpec::Cforall;
[0da3e2c]52TypedefTable typedefTable;
[cbaee0d]53DeclarationNode * parseTree = nullptr; // program parse tree
[81419b5]54
[926af74]55extern int yydebug; // set for -g flag (Grammar)
[b87a5ed]56bool
57 astp = false,
[de62360d]58 bresolvep = false,
[fea7ca7]59 bboxp = false,
[ca1c11f]60 ctorinitp = false,
[b87a5ed]61 exprp = false,
62 expraltp = false,
63 libcfap = false,
[de62360d]64 nopreludep = false,
[1ab4ce2]65 noprotop = false,
[de62360d]66 parsep = false,
[b87a5ed]67 resolvep = false, // used in AlternativeFinder
68 symtabp = false,
[d3b7937]69 treep = false,
[b87a5ed]70 validp = false,
[de62360d]71 errorp = false,
72 codegenp = false;
[b87a5ed]73
[926af74]74static void parse_cmdline( int argc, char *argv[], const char *& filename );
[8b7ee09]75static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
[e6955b1]76static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
77
[0afffee]78static void backtrace( int start ) { // skip first N stack frames
[e6955b1]79 enum { Frames = 50 };
80 void * array[Frames];
[0afffee]81 int size = ::backtrace( array, Frames );
82 char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
83
84 *index( messages[0], '(' ) = '\0'; // find executable name
85 cerr << "Stack back trace for: " << messages[0] << endl;
[e6955b1]86
[b542bfb]87 // skip last 2 stack frames after main
88 for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
[e6955b1]89 char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
90 for ( char *p = messages[i]; *p; ++p ) { // find parantheses and +offset
[0afffee]91 if ( *p == '(' ) {
[46f6134]92 mangled_name = p;
[0afffee]93 } else if ( *p == '+' ) {
[e6955b1]94 offset_begin = p;
[0afffee]95 } else if ( *p == ')' ) {
[e6955b1]96 offset_end = p;
97 break;
98 } // if
99 } // for
100
101 // if line contains symbol, attempt to demangle
[b542bfb]102 int frameNo = i - start;
[e6955b1]103 if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
[0afffee]104 *mangled_name++ = '\0'; // delimit strings
[e6955b1]105 *offset_begin++ = '\0';
106 *offset_end++ = '\0';
107
[0afffee]108 int status;
[e6955b1]109 char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
[0afffee]110 // bug in __cxa_demangle for single-character lower-case non-mangled names
[e6955b1]111 if ( status == 0 ) { // demangling successful ?
[b542bfb]112 cerr << "(" << frameNo << ") " << messages[i] << " : "
[e6955b1]113 << real_name << "+" << offset_begin << offset_end << endl;
114 } else { // otherwise, output mangled name
[b542bfb]115 cerr << "(" << frameNo << ") " << messages[i] << " : "
[0afffee]116 << mangled_name << "(/*unknown*/)+" << offset_begin << offset_end << endl;
[e6955b1]117 } // if
[0afffee]118
[e6955b1]119 free( real_name );
120 } else { // otherwise, print the whole line
[b542bfb]121 cerr << "(" << frameNo << ") " << messages[i] << endl;
[e6955b1]122 } // if
123 } // for
[b542bfb]124
[e6955b1]125 free( messages );
[b542bfb]126} // backtrace
127
128void sigSegvBusHandler( int sig_num ) {
129 cerr << "*CFA runtime error* program cfa-cpp terminated with "
130 << (sig_num == SIGSEGV ? "segment fault" : "bus error")
[0afffee]131 << "." << endl;
[b542bfb]132 backtrace( 2 ); // skip first 2 stack frames
[e6955b1]133 exit( EXIT_FAILURE );
134} // sigSegvBusHandler
[0da3e2c]135
[b542bfb]136void sigAbortHandler( int sig_num ) {
137 backtrace( 6 ); // skip first 6 stack frames
138 signal( SIGABRT, SIG_DFL); // reset default signal handler
139 raise( SIGABRT ); // reraise SIGABRT
140} // sigAbortHandler
141
142
[cbaee0d]143int main( int argc, char * argv[] ) {
[3b8e52c]144 FILE * input; // use FILE rather than istream because yyin is FILE
[e6955b1]145 ostream *output = & cout;
[926af74]146 const char *filename = nullptr;
[e6955b1]147 list< Declaration * > translationUnit;
148
149 signal( SIGSEGV, sigSegvBusHandler );
150 signal( SIGBUS, sigSegvBusHandler );
[b542bfb]151 signal( SIGABRT, sigAbortHandler );
[b87a5ed]152
[0da3e2c]153 parse_cmdline( argc, argv, filename ); // process command-line arguments
[b87a5ed]154
155 try {
[81419b5]156 // choose to read the program from a file or stdin
[3b8e52c]157 if ( optind < argc ) { // any commands after the flags ? => input file name
[b87a5ed]158 input = fopen( argv[ optind ], "r" );
[3b8e52c]159 assertf( input, "cannot open %s\n", argv[ optind ] );
[d029162e]160 // if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
[926af74]161 if ( filename == nullptr ) filename = argv[ optind ];
[37024fd]162 // prelude filename comes in differently
163 if ( libcfap ) filename = "prelude.cf";
[b87a5ed]164 optind += 1;
[3b8e52c]165 } else { // no input file name
[b87a5ed]166 input = stdin;
[2a7e29b]167 // if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
168 // a fake name along
[926af74]169 if ( filename == nullptr ) filename = "stdin";
[b87a5ed]170 } // if
171
[3b8e52c]172 if ( optind < argc ) { // any commands after the flags and input file ? => output file name
[b87a5ed]173 output = new ofstream( argv[ optind ] );
174 } // if
[71f4e4f]175
[159c62e]176 // read in the builtins, extras, and the prelude
[de62360d]177 if ( ! nopreludep ) { // include gcc builtins
[faf8857]178 // -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
[d3b7937]179 FILE * builtins = fopen( libcfap | treep ? "builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
[3b8e52c]180 assertf( builtins, "cannot open builtins.cf\n" );
[81419b5]181 parse( builtins, LinkageSpec::Compiler );
182
[159c62e]183 // read the extra prelude in, if not generating the cfa library
184 FILE * extras = fopen( libcfap | treep ? "extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
[3b8e52c]185 assertf( extras, "cannot open extras.cf\n" );
[159c62e]186 parse( extras, LinkageSpec::C );
187
[81419b5]188 if ( ! libcfap ) {
[faf8857]189 // read the prelude in, if not generating the cfa library
[d3b7937]190 FILE * prelude = fopen( treep ? "prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
[3b8e52c]191 assertf( prelude, "cannot open prelude.cf\n" );
[35304009]192 parse( prelude, LinkageSpec::Intrinsic );
[b87a5ed]193 } // if
194 } // if
[81419b5]195
[926af74]196 parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
[71f4e4f]197
[b87a5ed]198 if ( parsep ) {
[e6955b1]199 parseTree->printList( cout );
[0da3e2c]200 delete parseTree;
[b87a5ed]201 return 0;
202 } // if
203
[0da3e2c]204 buildList( parseTree, translationUnit );
205 delete parseTree;
[cbaee0d]206 parseTree = nullptr;
[b87a5ed]207
208 if ( astp ) {
[1ab4ce2]209 dump( translationUnit );
[b87a5ed]210 return 0;
211 } // if
212
[839ccbb]213 // add the assignment statement after the initialization of a type parameter
[81419b5]214 OPTPRINT( "validate" )
215 SymTab::validate( translationUnit, symtabp );
216 if ( symtabp ) {
[46f6134]217 deleteAll( translationUnit );
[b87a5ed]218 return 0;
219 } // if
220
[81419b5]221 if ( expraltp ) {
[e6955b1]222 ResolvExpr::AlternativePrinter printer( cout );
[81419b5]223 acceptAll( translationUnit, printer );
[b87a5ed]224 return 0;
225 } // if
226
227 if ( validp ) {
[1ab4ce2]228 dump( translationUnit );
[b87a5ed]229 return 0;
230 } // if
231
[81419b5]232 OPTPRINT( "mutate" )
233 ControlStruct::mutate( translationUnit );
[71f4e4f]234 OPTPRINT( "fixNames" )
[81419b5]235 CodeGen::fixNames( translationUnit );
[f1e012b]236 OPTPRINT( "tweakInit" )
[a0fdbd5]237 InitTweak::genInit( translationUnit );
[b87a5ed]238
[81419b5]239 if ( libcfap ) {
240 // generate the bodies of cfa library functions
241 LibCfa::makeLibCfa( translationUnit );
[b87a5ed]242 } // if
243
[de62360d]244 if ( bresolvep ) {
[1ab4ce2]245 dump( translationUnit );
[de62360d]246 return 0;
247 } // if
248
[81419b5]249 OPTPRINT( "resolve" )
[b87a5ed]250 ResolvExpr::resolve( translationUnit );
[81419b5]251 if ( exprp ) {
[1ab4ce2]252 dump( translationUnit );
[ca1c11f]253 return 0;
[926af74]254 } // if
[81419b5]255
[71f4e4f]256 // fix ObjectDecl - replaces ConstructorInit nodes
[6cf27a07]257 OPTPRINT( "fixInit" )
258 InitTweak::fix( translationUnit, filename, libcfap || treep );
[ca1c11f]259 if ( ctorinitp ) {
260 dump ( translationUnit );
261 return 0;
[926af74]262 } // if
[71f4e4f]263
[ea5daeb]264 OPTPRINT("instantiateGenerics")
265 GenPoly::instantiateGeneric( translationUnit );
[81419b5]266 OPTPRINT( "copyParams" );
[b87a5ed]267 GenPoly::copyParams( translationUnit );
[81419b5]268 OPTPRINT( "convertSpecializations" )
[698664b3]269 GenPoly::convertSpecializations( translationUnit );
[81419b5]270 OPTPRINT( "convertLvalue" )
[b87a5ed]271 GenPoly::convertLvalue( translationUnit );
[fea7ca7]272
273 if ( bboxp ) {
274 dump( translationUnit );
275 return 0;
[926af74]276 } // if
[81419b5]277 OPTPRINT( "box" )
[b87a5ed]278 GenPoly::box( translationUnit );
[81419b5]279
[2871210]280 // print tree right before code generation
[81419b5]281 if ( codegenp ) {
[1ab4ce2]282 dump( translationUnit );
[81419b5]283 return 0;
284 } // if
[b87a5ed]285
[1ab4ce2]286 CodeGen::generate( translationUnit, *output, ! noprotop );
[b87a5ed]287
[e6955b1]288 if ( output != &cout ) {
[b87a5ed]289 delete output;
290 } // if
291 } catch ( SemanticError &e ) {
292 if ( errorp ) {
[e6955b1]293 cerr << "---AST at error:---" << endl;
294 dump( translationUnit, cerr );
295 cerr << endl << "---End of AST, begin error message:---\n" << endl;
[926af74]296 } // if
[e6955b1]297 e.print( cerr );
298 if ( output != &cout ) {
[b87a5ed]299 delete output;
300 } // if
301 return 1;
302 } catch ( UnimplementedError &e ) {
[e6955b1]303 cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
304 if ( output != &cout ) {
[b87a5ed]305 delete output;
306 } // if
307 return 1;
308 } catch ( CompilerError &e ) {
[e6955b1]309 cerr << "Compiler Error: " << e.get_what() << endl;
310 cerr << "(please report bugs to " << endl;
311 if ( output != &cout ) {
[b87a5ed]312 delete output;
313 } // if
314 return 1;
315 } // try
316
[39786813]317 deleteAll( translationUnit );
[b87a5ed]318 return 0;
[d9a0e76]319} // main
[51b73452]320
[cbaee0d]321void parse_cmdline( int argc, char * argv[], const char *& filename ) {
[0da3e2c]322 enum { Ast, Bbox, Bresolver, CtorInitFix, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, Validate, };
323
324 static struct option long_opts[] = {
325 { "ast", no_argument, 0, Ast },
326 { "before-box", no_argument, 0, Bbox },
327 { "before-resolver", no_argument, 0, Bresolver },
328 { "ctorinitfix", no_argument, 0, CtorInitFix },
329 { "expr", no_argument, 0, Expr },
330 { "expralt", no_argument, 0, ExprAlt },
331 { "grammar", no_argument, 0, Grammar },
332 { "libcfa", no_argument, 0, LibCFA },
333 { "no-preamble", no_argument, 0, Nopreamble },
334 { "parse", no_argument, 0, Parse },
335 { "no-prototypes", no_argument, 0, Prototypes },
336 { "resolver", no_argument, 0, Resolver },
337 { "symbol", no_argument, 0, Symbol },
338 { "tree", no_argument, 0, Tree },
339 { "validate", no_argument, 0, Validate },
340 { 0, 0, 0, 0 }
341 }; // long_opts
342 int long_index;
343
344 opterr = 0; // (global) prevent getopt from printing error messages
345
346 int c;
347 while ( (c = getopt_long( argc, argv, "abBcefglnpqrstvyzD:F:", long_opts, &long_index )) != -1 ) {
348 switch ( c ) {
349 case Ast:
350 case 'a': // dump AST
351 astp = true;
352 break;
353 case Bresolver:
354 case 'b': // print before resolver steps
355 bresolvep = true;
356 break;
357 case 'B': // print before resolver steps
358 bboxp = true;
359 break;
360 case CtorInitFix:
361 case 'c':
362 ctorinitp = true;
363 break;
364 case Expr:
365 case 'e': // dump AST after expression analysis
366 exprp = true;
367 break;
368 case ExprAlt:
369 case 'f': // print alternatives for expressions
370 expraltp = true;
371 break;
372 case Grammar:
373 case 'g': // bison debugging info (grammar rules)
[926af74]374 yydebug = true;
[0da3e2c]375 break;
376 case LibCFA:
377 case 'l': // generate libcfa.c
378 libcfap = true;
379 break;
380 case Nopreamble:
381 case 'n': // do not read preamble
382 nopreludep = true;
383 break;
384 case Prototypes:
385 case 'p': // generate prototypes for preamble functions
386 noprotop = true;
387 break;
388 case Parse:
389 case 'q': // dump parse tree
390 parsep = true;
391 break;
392 case Resolver:
393 case 'r': // print resolver steps
394 resolvep = true;
395 break;
396 case Symbol:
397 case 's': // print symbol table events
398 symtabp = true;
399 break;
400 case Tree:
401 case 't': // build in tree
402 treep = true;
403 break;
404 case 'v': // dump AST after decl validation pass
405 validp = true;
406 break;
407 case 'y':
408 errorp = true;
409 break;
410 case 'z':
411 codegenp = true;
412 break;
413 case 'D': // ignore -Dxxx
414 break;
415 case 'F': // source file-name without suffix
416 filename = optarg;
417 break;
418 case '?':
[3b8e52c]419 assertf( false, "Unknown option: '%c'\n", (char)optopt );
[0da3e2c]420 default:
421 abort();
422 } // switch
423 } // while
424} // parse_cmdline
425
[8b7ee09]426static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
[0da3e2c]427 extern int yyparse( void );
[cbaee0d]428 extern FILE * yyin;
[0da3e2c]429 extern int yylineno;
430
[8b7ee09]431 ::linkage = linkage; // set globals
[0da3e2c]432 yyin = input;
433 yylineno = 1;
434 typedefTable.enterScope();
435 int parseStatus = yyparse();
[81419b5]436
437 fclose( input );
[0da3e2c]438 if ( shouldExit || parseStatus != 0 ) {
439 exit( parseStatus );
[81419b5]440 } // if
[0da3e2c]441} // parse
[81419b5]442
[1ab4ce2]443static bool notPrelude( Declaration * decl ) {
444 return ! LinkageSpec::isBuiltin( decl->get_linkage() );
[0da3e2c]445} // notPrelude
[1ab4ce2]446
[e6955b1]447static void dump( list< Declaration * > & translationUnit, ostream & out ) {
448 list< Declaration * > decls;
[926af74]449
[1ab4ce2]450 if ( noprotop ) {
[e6955b1]451 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
[1ab4ce2]452 } else {
453 decls = translationUnit;
[926af74]454 } // if
[1ab4ce2]455
[f77f12e2]456 printAll( decls, out );
[7f5566b]457 deleteAll( translationUnit );
[0da3e2c]458} // dump
[1ab4ce2]459
[51b73452]460// Local Variables: //
[b87a5ed]461// tab-width: 4 //
462// mode: c++ //
463// compile-command: "make install" //
[51b73452]464// End: //
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