Context Navigation

source: src/main.cc @ a6fe3de

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 a6fe3de was b542bfb, checked in by Peter A. Buhr <pabuhr@…>, 8 years ago
print stack trace for assertion failure
Property mode set to `100644`
File size: 13.0 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 : Mon Aug 29 17:34:39 2016
13	// Update Count : 426
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_fd
21	#include <cxxabi.h> // __cxa_demangle
22
23	using namespace std;
24
25	#include "Parser/lex.h"
26	#include "Parser/parser.h"
27	#include "Parser/TypedefTable.h"
28	#include "GenPoly/Lvalue.h"
29	#include "GenPoly/Specialize.h"
30	#include "GenPoly/Box.h"
31	#include "GenPoly/CopyParams.h"
32	#include "GenPoly/InstantiateGeneric.h"
33	#include "CodeGen/Generate.h"
34	#include "CodeGen/FixNames.h"
35	#include "ControlStruct/Mutate.h"
36	#include "SymTab/Validate.h"
37	#include "ResolvExpr/AlternativePrinter.h"
38	#include "ResolvExpr/Resolver.h"
39	#include "MakeLibCfa.h"
40	#include "InitTweak/GenInit.h"
41	#include "InitTweak/FixInit.h"
42	#include "Common/UnimplementedError.h"
43	#include "../config.h"
44
45	using namespace std;
46
47	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
48
49
50	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
51	TypedefTable typedefTable;
52	DeclarationNode * parseTree = nullptr; // program parse tree
53
54	extern int yydebug; // set for -g flag (Grammar)
55	bool
56	astp = false,
57	bresolvep = false,
58	bboxp = false,
59	ctorinitp = false,
60	exprp = false,
61	expraltp = false,
62	libcfap = false,
63	nopreludep = false,
64	noprotop = false,
65	parsep = false,
66	resolvep = false, // used in AlternativeFinder
67	symtabp = false,
68	treep = false,
69	validp = false,
70	errorp = false,
71	codegenp = false;
72
73	static void parse_cmdline( int argc, char argv[], const char & filename );
74	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
75	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
76
77	void backtrace( int start ) { // skip first N stack frames
78	enum { Frames = 50 };
79	void * array[Frames];
80	int size = backtrace( array, Frames );
81	char ** messages = backtrace_symbols( array, size );
82
83	// skip last 2 stack frames after main
84	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
85	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
86	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
87	if (*p == '(') {
88	mangled_name = p;
89	} else if (*p == '+') {
90	offset_begin = p;
91	} else if (*p == ')') {
92	offset_end = p;
93	break;
94	} // if
95	} // for
96
97	// if line contains symbol, attempt to demangle
98	int frameNo = i - start;
99	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
100	*mangled_name++ = '\0';
101	*offset_begin++ = '\0';
102	*offset_end++ = '\0';
103
104	int status, frameNo = i - start;
105	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
106	if ( status == 0 ) { // demangling successful ?
107	cerr << "(" << frameNo << ") " << messages[i] << " : "
108	<< real_name << "+" << offset_begin << offset_end << endl;
109
110	} else { // otherwise, output mangled name
111	cerr << "(" << frameNo << ") " << messages[i] << " : "
112	<< mangled_name << "+" << offset_begin << offset_end << endl;
113	} // if
114	free( real_name );
115	} else { // otherwise, print the whole line
116	cerr << "(" << frameNo << ") " << messages[i] << endl;
117	} // if
118	} // for
119
120	free( messages );
121	} // backtrace
122
123	void sigSegvBusHandler( int sig_num ) {
124	cerr << "CFA runtime error program cfa-cpp terminated with "
125	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
126	<< " backtrace:" << endl;
127	backtrace( 2 ); // skip first 2 stack frames
128	exit( EXIT_FAILURE );
129	} // sigSegvBusHandler
130
131	void sigAbortHandler( int sig_num ) {
132	backtrace( 6 ); // skip first 6 stack frames
133	signal( SIGABRT, SIG_DFL); // reset default signal handler
134	raise( SIGABRT ); // reraise SIGABRT
135	} // sigAbortHandler
136
137
138	int main( int argc, char * argv[] ) {
139	FILE * input; // use FILE rather than istream because yyin is FILE
140	ostream *output = & cout;
141	const char *filename = nullptr;
142	list< Declaration * > translationUnit;
143
144	signal( SIGSEGV, sigSegvBusHandler );
145	signal( SIGBUS, sigSegvBusHandler );
146	signal( SIGABRT, sigAbortHandler );
147
148	parse_cmdline( argc, argv, filename ); // process command-line arguments
149
150	try {
151	// choose to read the program from a file or stdin
152	if ( optind < argc ) { // any commands after the flags ? => input file name
153	input = fopen( argv[ optind ], "r" );
154	assertf( input, "cannot open %s\n", argv[ optind ] );
155	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
156	if ( filename == nullptr ) filename = argv[ optind ];
157	// prelude filename comes in differently
158	if ( libcfap ) filename = "prelude.cf";
159	optind += 1;
160	} else { // no input file name
161	input = stdin;
162	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
163	// a fake name along
164	if ( filename == nullptr ) filename = "stdin";
165	} // if
166
167	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
168	output = new ofstream( argv[ optind ] );
169	} // if
170
171	// read in the builtins, extras, and the prelude
172	if ( ! nopreludep ) { // include gcc builtins
173	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
174	FILE * builtins = fopen( libcfap \| treep ? "builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
175	assertf( builtins, "cannot open builtins.cf\n" );
176	parse( builtins, LinkageSpec::Compiler );
177
178	// read the extra prelude in, if not generating the cfa library
179	FILE * extras = fopen( libcfap \| treep ? "extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
180	assertf( extras, "cannot open extras.cf\n" );
181	parse( extras, LinkageSpec::C );
182
183	if ( ! libcfap ) {
184	// read the prelude in, if not generating the cfa library
185	FILE * prelude = fopen( treep ? "prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
186	assertf( prelude, "cannot open prelude.cf\n" );
187	parse( prelude, LinkageSpec::Intrinsic );
188	} // if
189	} // if
190
191	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
192
193	if ( parsep ) {
194	parseTree->printList( cout );
195	delete parseTree;
196	return 0;
197	} // if
198
199	buildList( parseTree, translationUnit );
200	delete parseTree;
201	parseTree = nullptr;
202
203	if ( astp ) {
204	dump( translationUnit );
205	return 0;
206	} // if
207
208	// add the assignment statement after the initialization of a type parameter
209	OPTPRINT( "validate" )
210	SymTab::validate( translationUnit, symtabp );
211	if ( symtabp ) {
212	deleteAll( translationUnit );
213	return 0;
214	} // if
215
216	if ( expraltp ) {
217	ResolvExpr::AlternativePrinter printer( cout );
218	acceptAll( translationUnit, printer );
219	return 0;
220	} // if
221
222	if ( validp ) {
223	dump( translationUnit );
224	return 0;
225	} // if
226
227	OPTPRINT( "mutate" )
228	ControlStruct::mutate( translationUnit );
229	OPTPRINT( "fixNames" )
230	CodeGen::fixNames( translationUnit );
231	OPTPRINT( "tweakInit" )
232	InitTweak::genInit( translationUnit );
233
234	if ( libcfap ) {
235	// generate the bodies of cfa library functions
236	LibCfa::makeLibCfa( translationUnit );
237	} // if
238
239	if ( bresolvep ) {
240	dump( translationUnit );
241	return 0;
242	} // if
243
244	OPTPRINT( "resolve" )
245	ResolvExpr::resolve( translationUnit );
246	if ( exprp ) {
247	dump( translationUnit );
248	return 0;
249	} // if
250
251	// fix ObjectDecl - replaces ConstructorInit nodes
252	OPTPRINT( "fixInit" )
253	InitTweak::fix( translationUnit, filename, libcfap \|\| treep );
254	if ( ctorinitp ) {
255	dump ( translationUnit );
256	return 0;
257	} // if
258
259	OPTPRINT("instantiateGenerics")
260	GenPoly::instantiateGeneric( translationUnit );
261	OPTPRINT( "copyParams" );
262	GenPoly::copyParams( translationUnit );
263	OPTPRINT( "convertSpecializations" )
264	GenPoly::convertSpecializations( translationUnit );
265	OPTPRINT( "convertLvalue" )
266	GenPoly::convertLvalue( translationUnit );
267
268	if ( bboxp ) {
269	dump( translationUnit );
270	return 0;
271	} // if
272	OPTPRINT( "box" )
273	GenPoly::box( translationUnit );
274
275	// print tree right before code generation
276	if ( codegenp ) {
277	dump( translationUnit );
278	return 0;
279	} // if
280
281	CodeGen::generate( translationUnit, *output, ! noprotop );
282
283	if ( output != &cout ) {
284	delete output;
285	} // if
286	} catch ( SemanticError &e ) {
287	if ( errorp ) {
288	cerr << "---AST at error:---" << endl;
289	dump( translationUnit, cerr );
290	cerr << endl << "---End of AST, begin error message:---\n" << endl;
291	} // if
292	e.print( cerr );
293	if ( output != &cout ) {
294	delete output;
295	} // if
296	return 1;
297	} catch ( UnimplementedError &e ) {
298	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
299	if ( output != &cout ) {
300	delete output;
301	} // if
302	return 1;
303	} catch ( CompilerError &e ) {
304	cerr << "Compiler Error: " << e.get_what() << endl;
305	cerr << "(please report bugs to " << endl;
306	if ( output != &cout ) {
307	delete output;
308	} // if
309	return 1;
310	} // try
311
312	deleteAll( translationUnit );
313	return 0;
314	} // main
315
316	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
317	enum { Ast, Bbox, Bresolver, CtorInitFix, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, Validate, };
318
319	static struct option long_opts[] = {
320	{ "ast", no_argument, 0, Ast },
321	{ "before-box", no_argument, 0, Bbox },
322	{ "before-resolver", no_argument, 0, Bresolver },
323	{ "ctorinitfix", no_argument, 0, CtorInitFix },
324	{ "expr", no_argument, 0, Expr },
325	{ "expralt", no_argument, 0, ExprAlt },
326	{ "grammar", no_argument, 0, Grammar },
327	{ "libcfa", no_argument, 0, LibCFA },
328	{ "no-preamble", no_argument, 0, Nopreamble },
329	{ "parse", no_argument, 0, Parse },
330	{ "no-prototypes", no_argument, 0, Prototypes },
331	{ "resolver", no_argument, 0, Resolver },
332	{ "symbol", no_argument, 0, Symbol },
333	{ "tree", no_argument, 0, Tree },
334	{ "validate", no_argument, 0, Validate },
335	{ 0, 0, 0, 0 }
336	}; // long_opts
337	int long_index;
338
339	opterr = 0; // (global) prevent getopt from printing error messages
340
341	int c;
342	while ( (c = getopt_long( argc, argv, "abBcefglnpqrstvyzD:F:", long_opts, &long_index )) != -1 ) {
343	switch ( c ) {
344	case Ast:
345	case 'a': // dump AST
346	astp = true;
347	break;
348	case Bresolver:
349	case 'b': // print before resolver steps
350	bresolvep = true;
351	break;
352	case 'B': // print before resolver steps
353	bboxp = true;
354	break;
355	case CtorInitFix:
356	case 'c':
357	ctorinitp = true;
358	break;
359	case Expr:
360	case 'e': // dump AST after expression analysis
361	exprp = true;
362	break;
363	case ExprAlt:
364	case 'f': // print alternatives for expressions
365	expraltp = true;
366	break;
367	case Grammar:
368	case 'g': // bison debugging info (grammar rules)
369	yydebug = true;
370	break;
371	case LibCFA:
372	case 'l': // generate libcfa.c
373	libcfap = true;
374	break;
375	case Nopreamble:
376	case 'n': // do not read preamble
377	nopreludep = true;
378	break;
379	case Prototypes:
380	case 'p': // generate prototypes for preamble functions
381	noprotop = true;
382	break;
383	case Parse:
384	case 'q': // dump parse tree
385	parsep = true;
386	break;
387	case Resolver:
388	case 'r': // print resolver steps
389	resolvep = true;
390	break;
391	case Symbol:
392	case 's': // print symbol table events
393	symtabp = true;
394	break;
395	case Tree:
396	case 't': // build in tree
397	treep = true;
398	break;
399	case 'v': // dump AST after decl validation pass
400	validp = true;
401	break;
402	case 'y':
403	errorp = true;
404	break;
405	case 'z':
406	codegenp = true;
407	break;
408	case 'D': // ignore -Dxxx
409	break;
410	case 'F': // source file-name without suffix
411	filename = optarg;
412	break;
413	case '?':
414	assertf( false, "Unknown option: '%c'\n", (char)optopt );
415	default:
416	abort();
417	} // switch
418	} // while
419	} // parse_cmdline
420
421	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
422	extern int yyparse( void );
423	extern FILE * yyin;
424	extern int yylineno;
425
426	::linkage = linkage; // set globals
427	yyin = input;
428	yylineno = 1;
429	typedefTable.enterScope();
430	int parseStatus = yyparse();
431
432	fclose( input );
433	if ( shouldExit \|\| parseStatus != 0 ) {
434	exit( parseStatus );
435	} // if
436	} // parse
437
438	static bool notPrelude( Declaration * decl ) {
439	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
440	} // notPrelude
441
442	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
443	list< Declaration * > decls;
444
445	if ( noprotop ) {
446	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
447	} else {
448	decls = translationUnit;
449	} // if
450
451	printAll( decls, out );
452	deleteAll( translationUnit );
453	} // dump
454
455	// Local Variables: //
456	// tab-width: 4 //
457	// mode: c++ //
458	// compile-command: "make install" //
459	// End: //

Note: See TracBrowser for help on using the repository browser.

Download in other formats: