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source: src/main.cc @ 0afffee

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 0afffee was 0afffee, checked in by Peter A. Buhr <pabuhr@…>, 8 years ago
update stack trace on cfa error
Property mode set to `100644`
File size: 13.2 KB

Rev	Line
[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
[51b7345]	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
	24	using namespace std;
	25
[0da3e2c]	26	#include "Parser/lex.h"
	27	#include "Parser/parser.h"
	28	#include "Parser/TypedefTable.h"
[51b7345]	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"
[51b7345]	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"
[51b7345]	44	#include "../config.h"
	45
	46	using namespace std;
	47
[e6955b1]	48	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
[81419b5]	49
[0da3e2c]	50
[8b7ee09]	51	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
[0da3e2c]	52	TypedefTable typedefTable;
[cbaee0d]	53	DeclarationNode * parseTree = nullptr; // program parse tree
[81419b5]	54
[926af74]	55	extern int yydebug; // set for -g flag (Grammar)
[b87a5ed]	56	bool
	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]	74	static void parse_cmdline( int argc, char argv[], const char & filename );
[8b7ee09]	75	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
[e6955b1]	76	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
	77
[0afffee]	78	static 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
	128	void 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]	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
[cbaee0d]	143	int 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
[51b7345]	320
[cbaee0d]	321	void 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]	426	static 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]	443	static bool notPrelude( Declaration * decl ) {
	444	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
[0da3e2c]	445	} // notPrelude
[1ab4ce2]	446
[e6955b1]	447	static 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
[51b7345]	460	// Local Variables: //
[b87a5ed]	461	// tab-width: 4 //
	462	// mode: c++ //
	463	// compile-command: "make install" //
[51b7345]	464	// End: //

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