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source: src/driver/cfa.cc @ c20b0fea

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Last change on this file since c20b0fea was e0e47d4, checked in by Peter A. Buhr <pabuhr@…>, 7 years ago
stop gcc strcmp unrolling
Property mode set to `100644`
File size: 13.3 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 : Tue Jan 30 15:46:15 2018
13	// Update Count : 161
14	//
15
16	#include <iostream>
17	#include <cstdio> // perror
18	#include <cstdlib> // putenv, exit
19	#include <unistd.h> // execvp
20	#include <string> // STL version
21
22	#include "config.h" // configure info
23
24	using std::cerr;
25	using std::endl;
26	using std::string;
27	using std::to_string;
28
29
30	//#define __DEBUG_H__
31
32
33	bool prefix( string arg, string pre ) {
34	return arg.substr( 0, pre.size() ) == pre;
35	} // prefix
36
37
38	void shuffle( const char *args[], int S, int E, int N ) {
39	// S & E index 1 passed the end so adjust with -1
40	#ifdef __DEBUG_H__
41	cerr << "shuffle:" << S << " " << E << " " << N << endl;
42	#endif // __DEBUG_H__
43	for ( int j = E-1 + N; j > S-1 + N; j -=1 ) {
44	#ifdef __DEBUG_H__
45	cerr << "\t" << j << " " << j-N << endl;
46	#endif // __DEBUG_H__
47	args[j] = args[j-N];
48	} // for
49	} // shuffle
50
51
52	#define str(s) #s
53
54	int main( int argc, char *argv[] ) {
55	string Version( CFA_VERSION_LONG ); // current version number from CONFIG
56	string Major( str( CFA_VERSION_MAJOR ) ), Minor( str( CFA_VERSION_MINOR ) ), Patch( str( CFA_VERSION_PATCH ) );
57
58	string installincdir( CFA_INCDIR ); // fixed location of include files
59	string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands
60
61	string heading; // banner printed at start of cfa compilation
62	string arg; // current command-line argument during command-line parsing
63	string Bprefix; // path where gcc looks for compiler command steps
64	string langstd; // language standard
65
66	string compiler_path( CFA_BACKEND_CC ); // path/name of C compiler
67	string compiler_name; // name of C compiler
68
69	bool nonoptarg = false; // indicates non-option argument specified
70	bool link = true; // linking as well as compiling
71	bool verbose = false; // -v flag
72	bool quiet = false; // -quiet flag
73	bool debug = true; // -debug flag
74	bool help = false; // -help flag
75	bool CFA_flag = false; // -CFA flag
76	bool cpp_flag = false; // -E or -M flag, preprocessor only
77	bool std_flag = false; // -std= flag
78	bool noincstd_flag = false; // -no-include-stdhdr= flag
79	bool debugging __attribute(( unused )) = false; // -g flag
80
81	const char *args[argc + 100]; // cfa command line values, plus some space for additional flags
82	int sargs = 1; // starting location for arguments in args list
83	int nargs = sargs; // number of arguments in args list; 0 => command name
84
85	const char *libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags
86	int nlibs = 0;
87
88	#ifdef __DEBUG_H__
89	cerr << "CFA:" << endl;
90	#endif // __DEBUG_H__
91
92	// process command-line arguments
93
94	for ( int i = 1; i < argc; i += 1 ) {
95	#ifdef __DEBUG_H__
96	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
97	#endif // __DEBUG_H__
98	arg = argv[i]; // convert to string value
99	#ifdef __DEBUG_H__
100	cerr << "arg:\"" << arg << "\"" << endl;
101	#endif // __DEBUG_H__
102	if ( prefix( arg, "-" ) ) {
103	// pass through arguments
104
105	if ( arg == "-Xlinker" \|\| arg == "-o" ) {
106	args[nargs] = argv[i]; // pass the argument along
107	nargs += 1;
108	i += 1;
109	if ( i == argc ) continue; // next argument available ?
110	args[nargs] = argv[i]; // pass the argument along
111	nargs += 1;
112	} else if ( arg == "-XCFA" ) { // CFA pass through
113	i += 1;
114	args[nargs] = ( *new string( string("-D__CFA_FLAG__=") + argv[i] ) ).c_str();
115	nargs += 1;
116
117	// CFA specific arguments
118
119	} else if ( arg == "-CFA" ) {
120	CFA_flag = true; // strip the -CFA flag
121	link = false;
122	args[nargs] = "-E"; // replace the argument with -E
123	nargs += 1;
124	} else if ( arg == "-debug" ) {
125	debug = true; // strip the debug flag
126	} else if ( arg == "-nodebug" ) {
127	debug = false; // strip the nodebug flag
128	} else if ( arg == "-quiet" ) {
129	quiet = true; // strip the quiet flag
130	} else if ( arg == "-noquiet" ) {
131	quiet = false; // strip the noquiet flag
132	} else if ( arg == "-help" ) {
133	help = true; // strip the help flag
134	} else if ( arg == "-nohelp" ) {
135	help = false; // strip the nohelp flag
136	} else if ( arg == "-no-include-stdhdr" ) {
137	noincstd_flag = true; // strip the no-include-stdhdr flag
138	} else if ( arg == "-compiler" ) {
139	// use the user specified compiler
140	i += 1;
141	if ( i == argc ) continue; // next argument available ?
142	compiler_path = argv[i];
143	if ( putenv( (char )( new string( string( "__U_COMPILER__=" ) + argv[i]) ).c_str() ) != 0 ) {
144	cerr << argv[0] << " error, cannot set environment variable." << endl;
145	exit( EXIT_FAILURE );
146	} // if
147
148	// C specific arguments
149
150	} else if ( arg == "-v" ) {
151	verbose = true; // verbosity required
152	args[nargs] = argv[i]; // pass the argument along
153	nargs += 1;
154	} else if ( arg == "-g" ) {
155	debugging = true; // symbolic debugging required
156	args[nargs] = argv[i]; // pass the argument along
157	nargs += 1;
158	} else if ( prefix( arg, "-std=" ) ) {
159	std_flag = true; // -std=XX provided
160	args[nargs] = argv[i]; // pass the argument along
161	nargs += 1;
162	} else if ( prefix( arg, "-B" ) ) {
163	Bprefix = arg.substr(2); // strip the -B flag
164	args[nargs] = ( *new string( string("-D__GCC_BPREFIX__=") + Bprefix ) ).c_str();
165	nargs += 1;
166	} else if ( prefix( arg, "-b" ) ) {
167	if ( arg.length() == 2 ) { // separate argument ?
168	i += 1;
169	if ( i == argc ) continue; // next argument available ?
170	arg += argv[i]; // concatenate argument
171	} // if
172	// later versions of gcc require the -b option to appear at the start of the command line
173	shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
174	args[sargs] = ( *new string( arg ) ).c_str(); // pass the argument along
175	if ( putenv( (char )( new string( string( "__GCC_MACHINE__=" ) + arg ) ).c_str() ) != 0 ) {
176	cerr << argv[0] << " error, cannot set environment variable." << endl;
177	exit( EXIT_FAILURE );
178	} // if
179	sargs += 1;
180	nargs += 1;
181	} else if ( prefix( arg, "-V" ) ) {
182	if ( arg.length() == 2 ) { // separate argument ?
183	i += 1;
184	if ( i == argc ) continue; // next argument available ?
185	arg += argv[i]; // concatenate argument
186	} // if
187	// later versions of gcc require the -V option to appear at the start of the command line
188	shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
189	args[sargs] = ( *new string( arg ) ).c_str(); // pass the argument along
190	if ( putenv( (char )( new string( string( "__GCC_VERSION__=" ) + arg ) ).c_str() ) != 0 ) {
191	cerr << argv[0] << " error, cannot set environment variable." << endl;
192	exit( EXIT_FAILURE );
193	} // if
194	sargs += 1;
195	nargs += 1;
196	} else if ( arg == "-c" \|\| arg == "-S" \|\| arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
197	args[nargs] = argv[i]; // pass the argument along
198	nargs += 1;
199	if ( arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
200	cpp_flag = true; // cpp only
201	} // if
202	link = false; // no linkage required
203	} else if ( arg[1] == 'l' ) {
204	// if the user specifies a library, load it after user code
205	libs[nlibs] = argv[i];
206	nlibs += 1;
207	} else {
208	// concatenate any other arguments
209	args[nargs] = argv[i];
210	nargs += 1;
211	} // if
212	} else {
213	// concatenate other arguments
214	args[nargs] = argv[i];
215	nargs += 1;
216	nonoptarg = true;
217	} // if
218	} // for
219
220	#ifdef __DEBUG_H__
221	cerr << "args:";
222	for ( int i = 1; i < nargs; i += 1 ) {
223	cerr << " " << args[i];
224	} // for
225	cerr << endl;
226	#endif // __DEBUG_H__
227
228	if ( cpp_flag && CFA_flag ) {
229	cerr << argv[0] << " error, cannot use -E and -CFA flags together." << endl;
230	exit( EXIT_FAILURE );
231	} // if
232
233	// add the CFA include-library paths, which allow direct access to header files without directory qualification
234	args[nargs] = "-I" CFA_INCDIR;
235	nargs += 1;
236	if ( ! noincstd_flag ) { // do not use during build
237	args[nargs] = "-I" CFA_INCDIR "/stdhdr";
238	nargs += 1;
239	} // if
240	args[nargs] = "-I" CFA_INCDIR "/concurrency";
241	nargs += 1;
242	args[nargs] = "-I" CFA_INCDIR "/containers";
243	nargs += 1;
244
245	#ifdef HAVE_LIBCFA
246	if ( link ) {
247	#if ! defined(HAVE_LIBCFA_RELEASE)
248	if( !debug ) {
249	cerr << "error: Option -nodebug is not available, libcfa was not installed." << endl;
250	exit( EXIT_FAILURE );
251	}
252	#endif
253	#if ! defined(HAVE_LIBCFA_DEBUG)
254	if( debug ) {
255	cerr << "error: Option -debug is not available, libcfa-d was not installed." << endl;
256	exit( EXIT_FAILURE );
257	}
258	#endif
259
260	// include the cfa library in case it's needed
261	args[nargs] = "-L" CFA_LIBDIR;
262	nargs += 1;
263	if( debug ) {
264	args[nargs] = "-lcfa-d";
265	} else {
266	args[nargs] = "-lcfa";
267	}
268	nargs += 1;
269	args[nargs] = "-lpthread";
270	nargs += 1;
271	args[nargs] = "-ldl";
272	nargs += 1;
273	args[nargs] = "-lrt";
274	nargs += 1;
275	args[nargs] = "-Xlinker";
276	nargs += 1;
277	args[nargs] = "--undefined=__cfaabi_dbg_bits_write";
278	nargs += 1;
279	args[nargs] = "-Xlinker";
280	nargs += 1;
281	args[nargs] = "--undefined=__cfaabi_interpose_startup";
282	nargs += 1;
283
284	} // if
285	#endif //HAVE_LIBCFA
286
287	// Add exception flags (unconditionally)
288	args[nargs] = "-fexceptions";
289	nargs += 1;
290
291	// add the correct set of flags based on the type of compile this is
292
293	args[nargs] = ( *new string( string("-D__CFA_MAJOR__=") + Major ) ).c_str();
294	nargs += 1;
295	args[nargs] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str();
296	nargs += 1;
297	args[nargs] = ( *new string( string("-D__CFA_PATCH__=") + Patch ) ).c_str();
298	nargs += 1;
299	args[nargs] = "-D__CFA__";
300	nargs += 1;
301	args[nargs] = "-D__CFORALL__";
302	nargs += 1;
303	args[nargs] = "-D__cforall";
304	nargs += 1;
305
306	if ( cpp_flag ) {
307	args[nargs] = "-D__CPP__";
308	nargs += 1;
309	} // if
310
311	shuffle( args, sargs, nargs, 1 ); // make room at front of argument list
312	nargs += 1;
313	if ( CFA_flag ) {
314	args[sargs] = "-D__CFA_FLAG__=-N";
315	args[nargs] = "-D__CFA_PREPROCESS_";
316	nargs += 1;
317	} else {
318	args[sargs] = "-D__CFA_FLAG__=-L";
319	} // if
320	sargs += 1;
321
322	if ( debug ) {
323	heading += " (debug)";
324	args[nargs] = "-D__CFA_DEBUG__";
325	nargs += 1;
326	} else {
327	heading += " (no debug)";
328	} // if
329
330	if ( Bprefix.length() == 0 ) {
331	Bprefix = installlibdir;
332	args[nargs] = ( *new string( string("-D__GCC_BPREFIX__=") + Bprefix ) ).c_str();
333	nargs += 1;
334	} // if
335
336	// execute the compilation command
337
338	args[0] = compiler_path.c_str(); // set compiler command for exec
339	// find actual name of the compiler independent of the path to it
340	int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/'
341	if ( p == -1 ) {
342	compiler_name = compiler_path;
343	} else {
344	compiler_name = *new string( compiler_path.substr( p + 1 ) );
345	} // if
346
347	if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name
348	args[nargs] = "-no-integrated-cpp";
349	nargs += 1;
350	args[nargs] = "-Wno-deprecated";
351	nargs += 1;
352	if ( ! std_flag ) { // default c99, if none specified
353	args[nargs] = "-std=gnu99";
354	nargs += 1;
355	} // if
356	args[nargs] = "-fgnu89-inline";
357	nargs += 1;
358	args[nargs] = "-D__int8_t_defined"; // prevent gcc type-size attributes
359	nargs += 1;
360	args[nargs] = "-D__NO_STRING_INLINES"; // prevent gcc strcmp unrolling
361	nargs += 1;
362	args[nargs] = ( *new string( string("-B") + Bprefix + "/" ) ).c_str();
363	nargs += 1;
364	args[nargs] = "-lm";
365	nargs += 1;
366	} else {
367	cerr << argv[0] << " error, compiler \"" << compiler_name << "\" unsupported." << endl;
368	exit( EXIT_FAILURE );
369	} // if
370
371	for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries
372	args[nargs] = libs[i];
373	nargs += 1;
374	} // for
375
376	args[nargs] = NULL; // terminate with NULL
377
378	#ifdef __DEBUG_H__
379	cerr << "nargs: " << nargs << endl;
380	cerr << "args:" << endl;
381	for ( int i = 0; args[i] != NULL; i += 1 ) {
382	cerr << " \"" << args[i] << "\"" << endl;
383	} // for
384	#endif // __DEBUG_H__
385
386	if ( ! quiet ) {
387	cerr << "CFA " << "Version " << Version << heading << endl;
388
389	if ( help ) {
390	cerr <<
391	"-debug\t\t\t: use cfa runtime with debug checking" << endl <<
392	"-help\t\t\t: print this help message" << endl <<
393	"-quiet\t\t\t: print no messages from the cfa command" << endl <<
394	"-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl <<
395	"-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl <<
396	"...\t\t\t: any other " << compiler_name << " flags" << endl;
397	} // if
398	} // if
399
400	if ( verbose ) {
401	if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc
402
403	for ( int i = 0; args[i] != NULL; i += 1 ) {
404	cerr << args[i] << " ";
405	} // for
406	cerr << endl;
407	} // if
408
409	if ( ! nonoptarg ) {
410	cerr << argv[0] << " error, no input files" << endl;
411	exit( EXIT_FAILURE );
412	} // if
413
414	// execute the command and return the result
415
416	execvp( args[0], (char const )args ); // should not return
417	perror( "CFA Translator error: cfa level, execvp" );
418	exit( EXIT_FAILURE );
419	} // main
420
421	// Local Variables: //
422	// tab-width: 4 //
423	// mode: c++ //
424	// compile-command: "make install" //
425	// End: //

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