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source: src/main.cc @ 84118d8

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newwith_gc

Last change on this file since 84118d8 was 0afffee, checked in by Peter A. Buhr <pabuhr@…>, 7 years ago
update stack trace on cfa error
Property mode set to `100644`
File size: 13.2 KB

Line
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	//
7	// main.cc --
8	//
9	// Author : Richard C. Bilson
10	// Created On : Fri May 15 23:12:02 2015
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Sun Oct 30 10:11:38 2016
13	// Update Count : 435
14	//
15
16	#include <iostream>
17	#include <fstream>
18	#include <signal.h> // signal
19	#include <getopt.h> // getopt
20	#include <execinfo.h> // backtrace, backtrace_symbols
21	#include <cxxabi.h> // __cxa_demangle
22	#include <cstring> // index
23
24	using namespace std;
25
26	#include "Parser/lex.h"
27	#include "Parser/parser.h"
28	#include "Parser/TypedefTable.h"
29	#include "GenPoly/Lvalue.h"
30	#include "GenPoly/Specialize.h"
31	#include "GenPoly/Box.h"
32	#include "GenPoly/CopyParams.h"
33	#include "GenPoly/InstantiateGeneric.h"
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"
41	#include "InitTweak/GenInit.h"
42	#include "InitTweak/FixInit.h"
43	#include "Common/UnimplementedError.h"
44	#include "../config.h"
45
46	using namespace std;
47
48	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
49
50
51	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
52	TypedefTable typedefTable;
53	DeclarationNode * parseTree = nullptr; // program parse tree
54
55	extern int yydebug; // set for -g flag (Grammar)
56	bool
57	astp = false,
58	bresolvep = false,
59	bboxp = false,
60	ctorinitp = false,
61	exprp = false,
62	expraltp = false,
63	libcfap = false,
64	nopreludep = false,
65	noprotop = false,
66	parsep = false,
67	resolvep = false, // used in AlternativeFinder
68	symtabp = false,
69	treep = false,
70	validp = false,
71	errorp = false,
72	codegenp = false;
73
74	static void parse_cmdline( int argc, char argv[], const char & filename );
75	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
76	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
77
78	static void backtrace( int start ) { // skip first N stack frames
79	enum { Frames = 50 };
80	void * array[Frames];
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;
86
87	// skip last 2 stack frames after main
88	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
89	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
90	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
91	if ( *p == '(' ) {
92	mangled_name = p;
93	} else if ( *p == '+' ) {
94	offset_begin = p;
95	} else if ( *p == ')' ) {
96	offset_end = p;
97	break;
98	} // if
99	} // for
100
101	// if line contains symbol, attempt to demangle
102	int frameNo = i - start;
103	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
104	*mangled_name++ = '\0'; // delimit strings
105	*offset_begin++ = '\0';
106	*offset_end++ = '\0';
107
108	int status;
109	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
110	// bug in __cxa_demangle for single-character lower-case non-mangled names
111	if ( status == 0 ) { // demangling successful ?
112	cerr << "(" << frameNo << ") " << messages[i] << " : "
113	<< real_name << "+" << offset_begin << offset_end << endl;
114	} else { // otherwise, output mangled name
115	cerr << "(" << frameNo << ") " << messages[i] << " : "
116	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
117	} // if
118
119	free( real_name );
120	} else { // otherwise, print the whole line
121	cerr << "(" << frameNo << ") " << messages[i] << endl;
122	} // if
123	} // for
124
125	free( messages );
126	} // backtrace
127
128	void sigSegvBusHandler( int sig_num ) {
129	cerr << "CFA runtime error program cfa-cpp terminated with "
130	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
131	<< "." << endl;
132	backtrace( 2 ); // skip first 2 stack frames
133	exit( EXIT_FAILURE );
134	} // sigSegvBusHandler
135
136	void 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
143	int main( int argc, char * argv[] ) {
144	FILE * input; // use FILE rather than istream because yyin is FILE
145	ostream *output = & cout;
146	const char *filename = nullptr;
147	list< Declaration * > translationUnit;
148
149	signal( SIGSEGV, sigSegvBusHandler );
150	signal( SIGBUS, sigSegvBusHandler );
151	signal( SIGABRT, sigAbortHandler );
152
153	parse_cmdline( argc, argv, filename ); // process command-line arguments
154
155	try {
156	// choose to read the program from a file or stdin
157	if ( optind < argc ) { // any commands after the flags ? => input file name
158	input = fopen( argv[ optind ], "r" );
159	assertf( input, "cannot open %s\n", argv[ optind ] );
160	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
161	if ( filename == nullptr ) filename = argv[ optind ];
162	// prelude filename comes in differently
163	if ( libcfap ) filename = "prelude.cf";
164	optind += 1;
165	} else { // no input file name
166	input = stdin;
167	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
168	// a fake name along
169	if ( filename == nullptr ) filename = "stdin";
170	} // if
171
172	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
173	output = new ofstream( argv[ optind ] );
174	} // if
175
176	// read in the builtins, extras, and the prelude
177	if ( ! nopreludep ) { // include gcc builtins
178	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
179	FILE * builtins = fopen( libcfap \| treep ? "builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
180	assertf( builtins, "cannot open builtins.cf\n" );
181	parse( builtins, LinkageSpec::Compiler );
182
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" );
185	assertf( extras, "cannot open extras.cf\n" );
186	parse( extras, LinkageSpec::C );
187
188	if ( ! libcfap ) {
189	// read the prelude in, if not generating the cfa library
190	FILE * prelude = fopen( treep ? "prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
191	assertf( prelude, "cannot open prelude.cf\n" );
192	parse( prelude, LinkageSpec::Intrinsic );
193	} // if
194	} // if
195
196	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
197
198	if ( parsep ) {
199	parseTree->printList( cout );
200	delete parseTree;
201	return 0;
202	} // if
203
204	buildList( parseTree, translationUnit );
205	delete parseTree;
206	parseTree = nullptr;
207
208	if ( astp ) {
209	dump( translationUnit );
210	return 0;
211	} // if
212
213	// add the assignment statement after the initialization of a type parameter
214	OPTPRINT( "validate" )
215	SymTab::validate( translationUnit, symtabp );
216	if ( symtabp ) {
217	deleteAll( translationUnit );
218	return 0;
219	} // if
220
221	if ( expraltp ) {
222	ResolvExpr::AlternativePrinter printer( cout );
223	acceptAll( translationUnit, printer );
224	return 0;
225	} // if
226
227	if ( validp ) {
228	dump( translationUnit );
229	return 0;
230	} // if
231
232	OPTPRINT( "mutate" )
233	ControlStruct::mutate( translationUnit );
234	OPTPRINT( "fixNames" )
235	CodeGen::fixNames( translationUnit );
236	OPTPRINT( "tweakInit" )
237	InitTweak::genInit( translationUnit );
238
239	if ( libcfap ) {
240	// generate the bodies of cfa library functions
241	LibCfa::makeLibCfa( translationUnit );
242	} // if
243
244	if ( bresolvep ) {
245	dump( translationUnit );
246	return 0;
247	} // if
248
249	OPTPRINT( "resolve" )
250	ResolvExpr::resolve( translationUnit );
251	if ( exprp ) {
252	dump( translationUnit );
253	return 0;
254	} // if
255
256	// fix ObjectDecl - replaces ConstructorInit nodes
257	OPTPRINT( "fixInit" )
258	InitTweak::fix( translationUnit, filename, libcfap \|\| treep );
259	if ( ctorinitp ) {
260	dump ( translationUnit );
261	return 0;
262	} // if
263
264	OPTPRINT("instantiateGenerics")
265	GenPoly::instantiateGeneric( translationUnit );
266	OPTPRINT( "copyParams" );
267	GenPoly::copyParams( translationUnit );
268	OPTPRINT( "convertSpecializations" )
269	GenPoly::convertSpecializations( translationUnit );
270	OPTPRINT( "convertLvalue" )
271	GenPoly::convertLvalue( translationUnit );
272
273	if ( bboxp ) {
274	dump( translationUnit );
275	return 0;
276	} // if
277	OPTPRINT( "box" )
278	GenPoly::box( translationUnit );
279
280	// print tree right before code generation
281	if ( codegenp ) {
282	dump( translationUnit );
283	return 0;
284	} // if
285
286	CodeGen::generate( translationUnit, *output, ! noprotop );
287
288	if ( output != &cout ) {
289	delete output;
290	} // if
291	} catch ( SemanticError &e ) {
292	if ( errorp ) {
293	cerr << "---AST at error:---" << endl;
294	dump( translationUnit, cerr );
295	cerr << endl << "---End of AST, begin error message:---\n" << endl;
296	} // if
297	e.print( cerr );
298	if ( output != &cout ) {
299	delete output;
300	} // if
301	return 1;
302	} catch ( UnimplementedError &e ) {
303	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
304	if ( output != &cout ) {
305	delete output;
306	} // if
307	return 1;
308	} catch ( CompilerError &e ) {
309	cerr << "Compiler Error: " << e.get_what() << endl;
310	cerr << "(please report bugs to " << endl;
311	if ( output != &cout ) {
312	delete output;
313	} // if
314	return 1;
315	} // try
316
317	deleteAll( translationUnit );
318	return 0;
319	} // main
320
321	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
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)
374	yydebug = true;
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 '?':
419	assertf( false, "Unknown option: '%c'\n", (char)optopt );
420	default:
421	abort();
422	} // switch
423	} // while
424	} // parse_cmdline
425
426	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
427	extern int yyparse( void );
428	extern FILE * yyin;
429	extern int yylineno;
430
431	::linkage = linkage; // set globals
432	yyin = input;
433	yylineno = 1;
434	typedefTable.enterScope();
435	int parseStatus = yyparse();
436
437	fclose( input );
438	if ( shouldExit \|\| parseStatus != 0 ) {
439	exit( parseStatus );
440	} // if
441	} // parse
442
443	static bool notPrelude( Declaration * decl ) {
444	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
445	} // notPrelude
446
447	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
448	list< Declaration * > decls;
449
450	if ( noprotop ) {
451	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
452	} else {
453	decls = translationUnit;
454	} // if
455
456	printAll( decls, out );
457	deleteAll( translationUnit );
458	} // dump
459
460	// Local Variables: //
461	// tab-width: 4 //
462	// mode: c++ //
463	// compile-command: "make install" //
464	// End: //

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