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source: driver/cfa.cc @ b0c7419

ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum

Last change on this file since b0c7419 was c334ecd, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago
add missing buffer (argv) check causing error
Property mode set to `100644`
File size: 18.0 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	// cfa.cc --
8	//
9	// Author : Peter A. Buhr
10	// Created On : Tue Aug 20 13:44:49 2002
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Fri Jan 31 16:48:03 2020
13	// Update Count : 421
14	//
15
16	#include <iostream>
17	#include <cstdio> // perror
18	#include <cstdlib> // putenv, exit
19	#include <climits> // PATH_MAX
20	#include <unistd.h> // execvp
21	#include <string> // STL version
22	#include <string.h> // strcmp
23	#include <algorithm> // find
24
25	#include <sys/types.h>
26	#include <sys/stat.h>
27
28	#include "Common/SemanticError.h"
29	#include "config.h" // configure info
30
31	using std::cerr;
32	using std::endl;
33	using std::string;
34	using std::to_string;
35
36	// #define __DEBUG_H__
37
38	// "N__=" suffix
39	static string __CFA_FLAGPREFIX__( "__CFA_FLAG" );
40
41	void Putenv( char * argv[], string arg ) {
42	// environment variables must have unique names
43	static int flags = 0;
44
45	if ( putenv( (char )( new string( string( __CFA_FLAGPREFIX__ + to_string( flags++ ) + "__=" ) + arg ) ).c_str() ) ) {
46	cerr << argv[0] << " error, cannot set environment variable." << endl;
47	exit( EXIT_FAILURE );
48	} // if
49	} // Putenv
50
51	// check if string has prefix
52	bool prefix( const string & arg, const string & pre ) {
53	return arg.substr( 0, pre.size() ) == pre;
54	} // prefix
55
56	inline bool ends_with(const string & str, const string & sfix) {
57	if (sfix.size() > str.size()) return false;
58	return std::equal(str.rbegin(), str.rbegin() + sfix.size(), sfix.rbegin(), sfix.rend());
59	}
60
61	// check if string has suffix
62	bool suffix( const string & arg ) {
63	enum { NumSuffixes = 3 };
64	static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" };
65
66	size_t dot = arg.find_last_of( "." );
67	if ( dot == string::npos ) return false;
68	const string * end = suffixes + NumSuffixes;
69	return std::find( suffixes, end, arg.substr( dot + 1 ) ) != end;
70	} // suffix
71
72
73	static inline bool dirExists( const string & path ) { // check if directory exists
74	struct stat info;
75	if ( stat( path.c_str(), &info ) != 0 ) return false;
76	return (info.st_mode & S_IFDIR) != 0;
77	} // dirExists
78
79	static inline string dir(const string & path) {
80	return path.substr(0, path.find_last_of('/'));
81	}
82
83	// Different path modes
84	enum PathMode {
85	Installed, // cfa is installed, use prefix
86	BuildTree, // cfa is in the tree, use source and build tree
87	Distributed // cfa is distributed, use build tree for includes and executable directory for .cfs
88	};
89
90	// Get path mode from /proc
91	PathMode FromProc() {
92	std::string abspath;
93	abspath.resize(PATH_MAX);
94
95	// get executable path from /proc/self/exe
96	ssize_t size = readlink("/proc/self/exe", const_cast<char*>(abspath.c_str()), abspath.size());
97	if(size <= 0) {
98	std::cerr << "Error could not evaluate absolute path from /proc/self/exe" << std::endl;
99	std::cerr << "Failed with " << std::strerror(errno) << std::endl;
100	std::exit(1);
101	}
102
103	// Trim extra characters
104	abspath.resize(size);
105
106	// Are we installed
107	if(abspath.rfind(CFA_BINDIR , 0) == 0) { return Installed; }
108
109	// Is this the build tree
110	if(abspath.rfind(TOP_BUILDDIR, 0) == 0) { return BuildTree; }
111
112	// Does this look like distcc
113	if(abspath.find("/.cfadistcc/") != std::string::npos) { return Distributed; }
114
115	// None of the above? Give up since we don't know where the prelude or include directories are
116	std::cerr << "Cannot find required files from excutable path " << abspath << std::endl;
117	std::exit(1);
118	}
119
120
121	#define xstr(s) str(s)
122	#define str(s) #s
123
124	int main( int argc, char * argv[] ) {
125	string Version( CFA_VERSION_LONG ); // current version number from CONFIG
126	string Major( xstr( CFA_VERSION_MAJOR ) ), Minor( xstr( CFA_VERSION_MINOR ) ), Patch( xstr( CFA_VERSION_PATCH ) );
127
128	string installincdir( CFA_INCDIR ); // fixed location of include files
129	string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands when installed
130	string srcdriverdir ( TOP_BUILDDIR "driver"); // fixed location of cc1 and cfa-cpp commands when in tree
131
132	string heading; // banner printed at start of cfa compilation
133	string arg; // current command-line argument during command-line parsing
134	string bprefix; // path where gcc looks for compiler steps
135	string langstd; // language standard
136
137	string compiler_path( CFA_BACKEND_CC ); // path/name of C compiler
138	string compiler_name; // name of C compiler
139
140	bool x_flag = false; // -x flag
141	bool nonoptarg = false; // no non-option arguments specified, i.e., no file names
142	bool link = true; // link stage occurring
143	bool verbose = false; // -v flag
144	bool quiet = false; // -quiet flag
145	bool debug = true; // -debug flag
146	bool nolib = false; // -nolib flag
147	bool help = false; // -help flag
148	bool CFA_flag = false; // -CFA flag
149	bool cpp_flag = false; // -E or -M flag, preprocessor only
150	bool std_flag = false; // -std= flag
151	bool noincstd_flag = false; // -no-include-stdhdr= flag
152	bool debugging __attribute(( unused )) = false; // -g flag
153	bool m32 = false; // -m32 flag
154	bool m64 = false; // -m64 flag
155	bool compiling_libs = false;
156	int o_file = 0; // -o filename position
157
158	PathMode path = FromProc();
159
160	const char *args[argc + 100]; // cfa command line values, plus some space for additional flags
161	int sargs = 1; // starting location for arguments in args list
162	int nargs = sargs; // number of arguments in args list; 0 => command name
163
164	const char *libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags
165	int nlibs = 0;
166
167	#ifdef __DEBUG_H__
168	cerr << "CFA:" << endl;
169	for ( int i = 1; i < argc; i += 1 ) {
170	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
171	} // for
172	#endif // __DEBUG_H__
173
174	// process command-line arguments
175
176	for ( int i = 1; i < argc; i += 1 ) {
177	arg = argv[i]; // convert to string value
178	if ( prefix( arg, "-" ) ) {
179	// pass through arguments
180
181	if ( arg == "-Xlinker" \|\| arg == "-o" ) {
182	args[nargs++] = argv[i]; // pass argument along
183	i += 1;
184	if ( i == argc ) continue; // next argument available ?
185	args[nargs++] = argv[i]; // pass argument along
186	if ( arg == "-o" ) o_file = i; // remember file
187	} else if ( arg == "-XCFA" ) { // CFA pass through
188	i += 1;
189	if ( i == argc ) continue; // next argument available ?
190	Putenv( argv, argv[i] );
191
192	// CFA specific arguments
193
194	} else if ( arg == "-CFA" ) {
195	CFA_flag = true; // strip the -CFA flag
196	link = false;
197	args[nargs++] = "-fsyntax-only"; // stop after stage 2
198	} else if ( arg == "-debug" ) {
199	debug = true; // strip the debug flag
200	} else if ( arg == "-nodebug" ) {
201	debug = false; // strip the nodebug flag
202	} else if ( arg == "-nolib" ) {
203	nolib = true; // strip the nodebug flag
204	} else if ( arg == "-quiet" ) {
205	quiet = true; // strip the quiet flag
206	} else if ( arg == "-noquiet" ) {
207	quiet = false; // strip the noquiet flag
208	} else if ( arg == "-help" ) {
209	help = true; // strip the help flag
210	} else if ( arg == "-nohelp" ) {
211	help = false; // strip the nohelp flag
212	} else if ( arg == "-no-include-stdhdr" ) {
213	noincstd_flag = true; // strip the no-include-stdhdr flag
214	} else if ( arg == "-cfalib") {
215	compiling_libs = true;
216	} else if ( arg == "-compiler" ) {
217	// use the user specified compiler
218	i += 1;
219	if ( i == argc ) continue; // next argument available ?
220	compiler_path = argv[i];
221	Putenv( argv, arg + "=" + argv[i] );
222
223	// C specific arguments
224
225	} else if ( arg == "-v" ) {
226	verbose = true; // verbosity required
227	args[nargs++] = argv[i]; // pass argument along
228	} else if ( arg == "-g" ) {
229	debugging = true; // symbolic debugging required
230	args[nargs++] = argv[i]; // pass argument along
231	} else if ( arg == "-save-temps" ) {
232	args[nargs++] = argv[i]; // pass argument along
233	Putenv( argv, arg ); // save cfa-cpp output
234	} else if ( prefix( arg, "-x" ) ) { // file suffix ?
235	string lang;
236	args[nargs++] = argv[i]; // pass argument along
237	if ( arg.length() == 2 ) { // separate argument ?
238	i += 1;
239	if ( i == argc ) continue; // next argument available ?
240	lang = argv[i];
241	args[nargs++] = argv[i]; // pass argument along
242	} else {
243	lang = arg.substr( 2 );
244	} // if
245	x_flag = lang != "none";
246	} else if ( prefix( arg, "-std=" ) \|\| prefix( arg, "--std=" ) ) {
247	std_flag = true; // -std=XX provided
248	args[nargs++] = argv[i]; // pass argument along
249	} else if ( arg == "-w" ) {
250	args[nargs++] = argv[i]; // pass argument along
251	Putenv( argv, arg );
252	} else if ( prefix( arg, "-W" ) ) { // check before next tests
253	if ( arg == "-Werror" \|\| arg == "-Wall" ) {
254	args[nargs++] = argv[i]; // pass argument along
255	Putenv( argv, argv[i] );
256	} else {
257	unsigned int adv = prefix( arg, "-Wno-" ) ? 5 : 2;
258	args[nargs] = argv[i]; // conditionally pass argument along
259	const char * warning = argv[i] + adv; // extract warning
260	if ( SemanticWarning_Exist( warning ) ) { // replace the argument for cfa-cpp
261	Putenv( argv, arg );
262	} // if
263	nargs += 1;
264	} // if
265	} else if ( prefix( arg, "-B" ) ) {
266	bprefix = arg.substr(2); // strip the -B flag
267	} else if ( arg == "-c" \|\| arg == "-S" \|\| arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
268	args[nargs++] = argv[i]; // pass argument along
269	if ( arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
270	cpp_flag = true; // cpp only
271	} // if
272	link = false; // no linkage required
273	} else if ( arg[1] == 'l' ) {
274	// if the user specifies a library, load it after user code
275	libs[nlibs++] = argv[i];
276	} else if ( arg == "-m32" ) {
277	m32 = true;
278	m64 = false;
279	args[nargs++] = argv[i];
280	} else if ( arg == "-m64" ) {
281	m64 = true;
282	m32 = false;
283	args[nargs++] = argv[i];
284	} else {
285	// concatenate any other arguments
286	args[nargs++] = argv[i];
287	} // if
288	} else {
289	bool cfa = suffix( arg ); // check suffix
290	if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ?
291	args[nargs++] = "-x";
292	args[nargs++] = "c";
293	} // if
294	args[nargs++] = argv[i]; // concatenate files
295	if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ?
296	args[nargs++] = "-x";
297	args[nargs++] = "none";
298	} // if
299	nonoptarg = true;
300	} // if
301	} // for
302
303	#ifdef __x86_64__
304	args[nargs++] = "-mcx16"; // allow double-wide CAA
305	#endif // __x86_64__
306
307	#ifdef __DEBUG_H__
308	cerr << "args:";
309	for ( int i = 1; i < nargs; i += 1 ) {
310	cerr << " " << args[i];
311	} // for
312	cerr << endl;
313	#endif // __DEBUG_H__
314
315	// -E flag stops at cc1 stage 1, so cfa-cpp in cc1 stage 2 is never executed.
316	if ( cpp_flag && CFA_flag ) {
317	CFA_flag = false;
318	cerr << argv[0] << " warning, both -E and -CFA flags specified, using -E and ignoring -CFA." << endl;
319	} // if
320
321	// add the CFA include-library paths, which allow direct access to header files without directory qualification
322	string libbase;
323	switch(path) {
324	case Installed:
325	args[nargs++] = "-I" CFA_INCDIR;
326	// do not use during build
327	if ( ! noincstd_flag ) {
328	args[nargs++] = "-I" CFA_INCDIR "stdhdr";
329	} // if
330	args[nargs++] = "-I" CFA_INCDIR "concurrency";
331	args[nargs++] = "-I" CFA_INCDIR "containers";
332	libbase = CFA_LIBDIR;
333	break;
334	case BuildTree:
335	case Distributed:
336	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src";
337	// do not use during build
338	if ( ! noincstd_flag ) {
339	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/stdhdr";
340	} // if
341	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/concurrency";
342	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/containers";
343
344	libbase = TOP_BUILDDIR "libcfa/";
345
346	break;
347	} // if
348
349	// add stdbool to get defines for bool/true/false
350	args[nargs++] = "-imacros";
351	args[nargs++] = "stdbool.h";
352
353	if( compiling_libs ) {
354	Putenv( argv, "-t" );
355	} // if
356
357	string arch( m32 ? CFA_32_CPU : (m64 ? CFA_64_CPU : CFA_DEFAULT_CPU) );
358	if ( ! m32 && ! m64 ) {
359	if ( arch == "x86" ) {
360	args[nargs++] = "-m32";
361	} else if ( arch == "x64" ) {
362	args[nargs++] = "-m64";
363	} // if
364	} // if
365
366	const char * config = nolib ? "nolib" : (debug ? "debug": "nodebug");
367	string libdir = libbase + arch + "-" + config;
368
369	if (path != Distributed) {
370	if ( ! nolib && ! dirExists( libdir ) ) {
371	cerr << argv[0] << " internal error, configuration " << config << " not installed." << endl;
372	cerr << "Was looking for " << libdir << endl;
373	for(int i = 1; i < argc; i++) {
374	cerr << argv[i] << " ";
375	}
376	cerr << endl;
377	libdir = libbase + arch + "-" + "nolib";
378	} // if
379
380	if ( ! dirExists( libdir ) ) {
381	cerr << argv[0] << " internal error, cannot find prelude directory." << endl;
382	cerr << "Was looking for " << libdir << endl;
383	exit( EXIT_FAILURE );
384	} // if
385	} // if
386
387	switch(path) {
388	case Installed : Putenv( argv, "--prelude-dir=" + libdir ); break;
389	case BuildTree : Putenv( argv, "--prelude-dir=" + libdir + "/prelude" ); break;
390	case Distributed : Putenv( argv, "--prelude-dir=" + dir(argv[0]) ); break;
391	}
392
393	for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries
394	args[nargs++] = libs[i];
395	} // for
396
397	if ( link ) {
398	args[nargs++] = "-Xlinker";
399	args[nargs++] = "--undefined=__cfaabi_dbg_bits_write";
400	args[nargs++] = "-Xlinker";
401	args[nargs++] = "--undefined=__cfaabi_interpose_startup";
402	args[nargs++] = "-Xlinker";
403	args[nargs++] = "--undefined=__cfaabi_appready_startup";
404	args[nargs++] = "-z";
405	args[nargs++] = "execstack";
406
407	// include the cfa library in case it is needed
408	args[nargs++] = ( *new string( string("-L" ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str();
409	args[nargs++] = ( *new string( string("-Wl,-rpath," ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str();
410	args[nargs++] = "-Wl,--push-state,--as-needed";
411	args[nargs++] = "-lcfathread";
412	args[nargs++] = "-Wl,--pop-state";
413	args[nargs++] = "-lcfa";
414	args[nargs++] = "-pthread";
415	args[nargs++] = "-ldl";
416	args[nargs++] = "-lrt";
417	args[nargs++] = "-lm";
418	} // if
419
420	args[nargs++] = "-fexceptions"; // add exception flags (unconditionally)
421
422	// add flags based on the type of compile
423
424	args[nargs++] = ( *new string( string("-D__CFA_MAJOR__=") + Major ) ).c_str();
425	args[nargs++] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str();
426	args[nargs++] = ( *new string( string("-D__CFA_PATCH__=") + Patch ) ).c_str();
427	args[nargs++] = "-D__CFA__";
428	args[nargs++] = "-D__CFORALL__";
429	args[nargs++] = "-D__cforall";
430
431	if ( cpp_flag ) {
432	args[nargs++] = "-D__CPP__";
433	} // if
434
435	if ( CFA_flag ) {
436	Putenv( argv, "-N" );
437	Putenv( argv, "-CFA" );
438	// -CFA implies cc1 stage 2, but gcc does not pass the -o file to this stage because it believe the file is for
439	// the linker. Hence, the -o file is explicit passed to cc1 stage 2 and used as cfa-cpp's output file.
440	if ( o_file ) Putenv( argv, string( "-o=" ) + argv[o_file] );
441	} else {
442	Putenv( argv, "-L" );
443	} // if
444
445	if ( debug ) {
446	heading += " (debug)";
447	args[nargs++] = "-D__CFA_DEBUG__";
448	} else {
449	heading += " (no debug)";
450	} // if
451
452	if ( bprefix.length() == 0 ) {
453	switch(path) {
454	case Installed : bprefix = installlibdir; break;
455	case BuildTree : bprefix = srcdriverdir ; break;
456	case Distributed : bprefix = dir(argv[0]) ; break;
457	}
458	if ( bprefix[bprefix.length() - 1] != '/' ) bprefix += '/';
459	Putenv( argv, string("-B=") + bprefix );
460	} // if
461
462	args[nargs++] = "-Xlinker"; // used by backtrace
463	args[nargs++] = "-export-dynamic";
464
465	// execute the compilation command
466
467	args[0] = compiler_path.c_str(); // set compiler command for exec
468	// find actual name of the compiler independent of the path to it
469	int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/'
470	if ( p == -1 ) {
471	compiler_name = compiler_path;
472	} else {
473	compiler_name = *new string( compiler_path.substr( p + 1 ) );
474	} // if
475
476	if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name
477	args[nargs++] = "-no-integrated-cpp";
478	args[nargs++] = "-Wno-deprecated";
479	#ifdef HAVE_CAST_FUNCTION_TYPE
480	args[nargs++] = "-Wno-cast-function-type";
481	#endif // HAVE_CAST_FUNCTION_TYPE
482	if ( ! std_flag ) { // default c11, if none specified
483	args[nargs++] = "-std=gnu11";
484	} // if
485	args[nargs++] = "-fgnu89-inline";
486	args[nargs++] = "-D__int8_t_defined"; // prevent gcc type-size attributes
487	args[nargs++] = ( *new string( string("-B") + bprefix ) ).c_str();
488	} else {
489	cerr << argv[0] << " error, compiler \"" << compiler_name << "\" unsupported." << endl;
490	exit( EXIT_FAILURE );
491	} // if
492
493	args[nargs] = nullptr; // terminate
494
495	#ifdef __DEBUG_H__
496	cerr << "nargs: " << nargs << endl;
497	cerr << "args:" << endl;
498	for ( int i = 0; args[i] != nullptr; i += 1 ) {
499	cerr << " \"" << args[i] << "\"" << endl;
500	} // for
501	cerr << endl;
502	#endif // __DEBUG_H__
503
504	if ( ! quiet ) {
505	cerr << "CFA " << "Version " << Version << heading << endl;
506	if ( help ) {
507	cerr <<
508	"-debug\t\t\t: use cfa runtime with debug checking" << endl <<
509	"-help\t\t\t: print this help message" << endl <<
510	"-quiet\t\t\t: print no messages from the cfa command" << endl <<
511	"-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl <<
512	"-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl <<
513	"...\t\t\t: any other " << compiler_name << " flags" << endl;
514	} // if
515	} // if
516
517	if ( verbose ) {
518	if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc
519
520	for ( int i = 0; args[i] != nullptr; i += 1 ) {
521	cerr << args[i] << " ";
522	} // for
523	cerr << endl;
524	} // if
525
526	if ( ! nonoptarg ) {
527	cerr << argv[0] << " error, no input files" << endl;
528	exit( EXIT_FAILURE );
529	} // if
530
531	// execute the command and return the result
532
533	execvp( args[0], (char const )args ); // should not return
534	perror( "CFA Translator error: execvp" );
535	exit( EXIT_FAILURE );
536	} // main
537
538	// Local Variables: //
539	// tab-width: 4 //
540	// mode: c++ //
541	// compile-command: "make install" //
542	// End: //

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