1 /* Specific flags and argument handling of the front-end of the
2 GNU compiler for the Java(TM) language.
3 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>.
22 Java and all Java-based marks are trademarks or registered trademarks
23 of Sun Microsystems, Inc. in the United States and other countries.
24 The Free Software Foundation is independent of Sun Microsystems, Inc. */
28 #include "coretypes.h"
33 /* Name of spec file. */
34 #define SPEC_FILE "libgcj.spec"
36 /* This bit is set if we saw a `-xfoo' language specification. */
37 #define LANGSPEC (1<<1)
38 /* True if this arg is a parameter to the previous option-taking arg. */
39 #define PARAM_ARG (1<<2)
40 /* True if this arg is a .java input file name. */
41 #define JAVA_FILE_ARG (1<<3)
42 /* True if this arg is a .class input file name. */
43 #define CLASS_FILE_ARG (1<<4)
44 /* True if this arg is a .zip or .jar input file name. */
45 #define ZIP_FILE_ARG (1<<5)
46 /* True if this arg is @FILE - where FILE contains a list of filenames. */
47 #define INDIRECT_FILE_ARG (1<<6)
48 /* True if this arg is a resource file. */
49 #define RESOURCE_FILE_ARG (1<<7)
51 static char *find_spec_file (const char *);
52 static int verify_class_name (const char *);
54 static const char *main_class_name = NULL;
55 int lang_specific_extra_outfiles = 0;
57 /* True if we should add -shared-libgcc to the command-line. */
58 int shared_libgcc = 1;
60 static const char jvgenmain_spec[] =
61 "jvgenmain %{findirect-dispatch} %{D*} %b %m.i |\n\
63 %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a*}\
65 %{v:-version} %{pg:-p} %{p}\
66 %<fbounds-check %<fno-bounds-check\
67 %<fassume-compiled* %<fno-assume-compiled*\
68 %<fcompile-resource* %<fassert %<fno-assert \
69 %<femit-class-file %<femit-class-files %<fencoding*\
70 %<fuse-boehm-gc %<fhash-synchronization %<fjni\
71 %<findirect-dispatch %<fnew-verifier\
72 %<fno-store-check %<foutput-class-dir\
73 %<fclasspath* %<fCLASSPATH* %<fbootclasspath*\
75 %<fuse-divide-subroutine %<fno-use-divide-subroutine\
76 %<fuse-atomic-builtins %<fno-use-atomic-builtins\
77 %<fcheck-references %<fno-check-references\
78 %<ffilelist-file %<fsaw-java-file %<fsource* %<ftarget*\
79 %{f*} -fdollars-in-identifiers\
81 %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
82 %{S:%W{o*}%{!o*:-o %b.s}}\
85 /* Return full path name of spec file if it is in DIR, or NULL if
88 find_spec_file (const char *dir)
94 spec = XNEWVEC (char, strlen (dir) + sizeof (SPEC_FILE)
95 + sizeof ("-specs=") + 4);
96 strcpy (spec, "-specs=");
100 strcat (spec, SPEC_FILE);
101 if (! stat (spec + x, &sb))
107 #define JAVA_START_CHAR_P(c) (c < 128 && (ISIDST (c) || c == '$'))
108 #define JAVA_PART_CHAR_P(c) (c < 128 \
111 || (c >= 0x00 && c <= 0x08) \
112 || (c >= 0x0e && c <= 0x1b) \
115 /* Verify that NAME is a valid Java class name that might contain
116 `main'. Return 0 on failure. */
118 verify_class_name (const char *name)
120 /* FIXME: what encoding do we use for command-line arguments? For
121 now we assume plain ASCII, which of course is wrong. */
125 if (ch < 0 || ! JAVA_START_CHAR_P (ch))
132 /* We found a break between class names. Next character
133 must be an identifier start again. */
136 if (! JAVA_PART_CHAR_P (ch))
145 lang_specific_driver (int *in_argc, const char *const **in_argv,
146 int *in_added_libraries)
150 int saw_save_temps = 0;
152 /* This will be 0 if we encounter a situation where we should not
156 /* This will be 1 if multiple input files (.class and/or .java)
157 should be passed to a single jc1 invocation. */
158 int combine_inputs = 0;
160 /* Number of .java and .class source file arguments seen. */
161 int java_files_count = 0;
162 int class_files_count = 0;
163 /* Number of .zip or .jar file arguments seen. */
164 int zip_files_count = 0;
165 /* Number of '@FILES' arguments seen. */
166 int indirect_files_count = 0;
168 /* Name of file containing list of files to compile. */
169 char *filelist_filename = 0;
171 FILE *filelist_file = 0;
173 /* The number of arguments being added to what's in argv, other than
177 /* Used to track options that take arguments, so we don't go wrapping
178 those with -xc++/-xnone. */
179 const char *quote = NULL;
181 /* The new argument list will be contained in this. */
182 const char **arglist;
184 /* Nonzero if we saw a `-xfoo' language specification on the
185 command line. Used to avoid adding our own -xc++ if the user
186 already gave a language for the file. */
187 int saw_speclang = 0;
189 /* Saw --resource, -C or -o options, respectively. */
190 int saw_resource = 0;
194 /* Saw some -O* or -g* option, respectively. */
198 /* Saw a `-D' option. */
201 /* An array used to flag each argument that needs a bit set for
202 LANGSPEC, MATHLIB, WITHLIBC, or GCLIB. */
205 /* The total number of arguments with the new stuff. */
208 /* The argument list. */
209 const char *const *argv;
211 /* The number of libraries added in. */
214 /* The total number of arguments with the new stuff. */
217 /* Nonzero if linking is supposed to happen. */
220 /* Nonzero if we want to find the spec file. */
221 int want_spec_file = 1;
223 /* The argument we use to specify the spec file. */
224 char *spec_file = NULL;
226 /* If linking, nonzero if the BC-ABI is in use. */
227 int link_for_bc_abi = 0;
231 added_libraries = *in_added_libraries;
233 args = XCNEWVEC (int, argc);
235 for (i = 1; i < argc; i++)
237 /* If the previous option took an argument, we swallow it here. */
241 args[i] |= PARAM_ARG;
245 /* We don't do this anymore, since we don't get them with minus
247 if (argv[i][0] == '\0' || argv[i][1] == '\0')
250 if (argv[i][0] == '-')
252 if (library != 0 && (strcmp (argv[i], "-nostdlib") == 0
253 || strcmp (argv[i], "-nodefaultlibs") == 0))
257 else if (strncmp (argv[i], "-fmain=", 7) == 0)
259 main_class_name = argv[i] + 7;
262 else if (strcmp (argv[i], "-fhelp") == 0)
264 else if (strcmp (argv[i], "-v") == 0)
268 /* If they only gave us `-v', don't try to link
273 else if (strncmp (argv[i], "-x", 2) == 0)
275 else if (strcmp (argv[i], "-C") == 0)
284 else if (strncmp (argv[i], "-fcompile-resource=", 19) == 0)
293 else if (argv[i][1] == 'D')
295 else if (argv[i][1] == 'g')
297 else if (argv[i][1] == 'O')
299 else if ((argv[i][2] == '\0'
300 && strchr ("bBVDUoeTuIYmLiAI", argv[i][1]) != NULL)
301 || strcmp (argv[i], "-Tdata") == 0
302 || strcmp (argv[i], "-MT") == 0
303 || strcmp (argv[i], "-MF") == 0)
305 if (strcmp (argv[i], "-o") == 0)
309 else if (strcmp (argv[i], "-classpath") == 0
310 || strcmp (argv[i], "-bootclasspath") == 0
311 || strcmp (argv[i], "-CLASSPATH") == 0
312 || strcmp (argv[i], "-encoding") == 0
313 || strcmp (argv[i], "-extdirs") == 0)
318 else if (library != 0
319 && ((argv[i][2] == '\0'
320 && strchr ("cSEM", argv[i][1]) != NULL)
321 || strcmp (argv[i], "-MM") == 0))
323 /* Don't specify libraries if we won't link, since that would
328 /* Remember this so we can confirm -fmain option. */
331 else if (strcmp (argv[i], "-d") == 0)
333 /* `-d' option is for javac compatibility. */
337 else if (strcmp (argv[i], "-fsyntax-only") == 0
338 || strcmp (argv[i], "--syntax-only") == 0)
344 else if (strcmp (argv[i], "-save-temps") == 0)
346 else if (strcmp (argv[i], "-static-libgcc") == 0
347 || strcmp (argv[i], "-static") == 0)
349 else if (strcmp (argv[i], "-findirect-dispatch") == 0
350 || strcmp (argv[i], "--indirect-dispatch") == 0)
355 /* Pass other options through. */
370 args[i] |= RESOURCE_FILE_ARG;
371 added += 2; /* for -xjava and -xnone */
374 if (argv[i][0] == '@')
376 args[i] |= INDIRECT_FILE_ARG;
377 indirect_files_count++;
378 added += 2; /* for -xjava and -xnone */
381 len = strlen (argv[i]);
382 if (len > 5 && strcmp (argv[i] + len - 5, ".java") == 0)
384 args[i] |= JAVA_FILE_ARG;
387 if (len > 6 && strcmp (argv[i] + len - 6, ".class") == 0)
389 args[i] |= CLASS_FILE_ARG;
393 && (strcmp (argv[i] + len - 4, ".zip") == 0
394 || strcmp (argv[i] + len - 4, ".jar") == 0))
396 args[i] |= ZIP_FILE_ARG;
403 fatal_error ("argument to %qs missing", quote);
405 if (saw_D && ! main_class_name)
406 fatal_error ("can't specify %<-D%> without %<--main%>");
408 if (main_class_name && ! verify_class_name (main_class_name))
409 fatal_error ("%qs is not a valid class name", main_class_name);
411 num_args = argc + added;
415 fatal_error ("--resource requires -o");
420 if (class_files_count + zip_files_count > 0)
422 warning (0, "already-compiled .class files ignored with -C");
423 num_args -= class_files_count + zip_files_count;
424 class_files_count = 0;
427 num_args += 2; /* For -o NONE. */
429 fatal_error ("cannot specify both -C and -o");
431 if ((saw_o && java_files_count + class_files_count + zip_files_count > 1)
432 || (saw_C && java_files_count > 1)
433 || (indirect_files_count > 0
434 && java_files_count + class_files_count + zip_files_count > 0))
439 filelist_filename = make_temp_file ("jx");
440 if (filelist_filename == NULL)
441 fatal_error ("cannot create temporary file");
442 record_temp_file (filelist_filename, ! saw_save_temps, 0);
443 filelist_file = fopen (filelist_filename, "w");
444 if (filelist_file == NULL)
445 pfatal_with_name (filelist_filename);
446 num_args -= java_files_count + class_files_count + zip_files_count;
447 num_args += 3; /* for the combined arg "-xjava", and "-xnone" */
452 lang_specific_extra_outfiles++;
454 if (saw_g + saw_O == 0)
457 /* An additional entry for the classpath. */
460 if (combine_inputs || indirect_files_count > 0)
461 num_args += 1; /* for "-ffilelist-file" */
462 if (combine_inputs && indirect_files_count > 0)
463 fatal_error ("using both @FILE with multiple files not implemented");
465 /* There's no point adding -shared-libgcc if we don't have a shared
467 #ifndef ENABLE_SHARED_LIBGCC
471 if (java_files_count > 0)
474 num_args += shared_libgcc;
476 num_args += link_for_bc_abi;
478 arglist = XNEWVEC (const char *, num_args + 1);
481 arglist[j++] = argv[0];
483 if (combine_inputs || indirect_files_count > 0)
484 arglist[j++] = "-ffilelist-file";
488 arglist[j++] = "-xjava";
489 arglist[j++] = filelist_filename;
490 arglist[j++] = "-xnone";
493 if (java_files_count > 0)
494 arglist[j++] = "-fsaw-java-file";
497 for (i = 1; i < argc; i++, j++)
499 arglist[j] = argv[i];
501 if ((args[i] & PARAM_ARG))
504 if ((args[i] & RESOURCE_FILE_ARG) != 0)
506 arglist[j++] = "-xjava";
507 arglist[j++] = argv[i];
508 arglist[j] = "-xnone";
511 if (argv[i][0] == '-' && argv[i][1] == 'I')
514 if (argv[i][2] == '\0')
516 gcc_assert (i + 1 < argc && (args[i + 1] & PARAM_ARG) != 0);
518 /* Drop the argument. */
523 jcf_path_include_arg (arg);
527 if (! strcmp (argv[i], "-classpath")
528 || ! strcmp (argv[i], "-CLASSPATH"))
530 jcf_path_classpath_arg (argv[i + 1]);
535 if (! strcmp (argv[i], "-bootclasspath"))
537 jcf_path_bootclasspath_arg (argv[i + 1]);
542 if (! strncmp (argv[i], "-fCLASSPATH=", 12)
543 || ! strncmp (argv[i], "-fclasspath=", 12))
545 const char *p = strchr (argv[i], '=');
546 jcf_path_classpath_arg (p + 1);
550 if (! strncmp (argv[i], "-fbootclasspath=", 16))
552 const char *p = strchr (argv[i], '=');
553 jcf_path_bootclasspath_arg (p + 1);
557 if (! strcmp (argv[i], "-extdirs"))
559 jcf_path_extdirs_arg (argv[i + 1]);
565 if (strcmp (argv[i], "-encoding") == 0)
567 arglist[j] = concat ("-f", argv[i]+1, "=", argv[i+1], NULL);
572 if (strcmp (argv[i], "-d") == 0)
574 arglist[j] = concat ("-foutput-class-dir=", argv[i + 1], NULL);
579 if (spec_file == NULL && strncmp (argv[i], "-L", 2) == 0)
580 spec_file = find_spec_file (argv[i] + 2);
582 if (strncmp (argv[i], "-fmain=", 7) == 0)
585 fatal_error ("cannot specify %<main%> class when not linking");
590 if ((args[i] & INDIRECT_FILE_ARG) != 0)
592 arglist[j++] = "-xjava";
593 arglist[j++] = argv[i]+1; /* Drop '@'. */
594 arglist[j] = "-xnone";
597 if ((args[i] & (CLASS_FILE_ARG|ZIP_FILE_ARG)) && saw_C)
604 && (args[i] & (CLASS_FILE_ARG|JAVA_FILE_ARG|ZIP_FILE_ARG)) != 0)
606 fputs (argv[i], filelist_file);
607 fputc ('\n', filelist_file);
613 /* Handle classpath setting. We specify the bootclasspath since
614 that requires the fewest changes to our existing code... */
616 arglist[j++] = jcf_path_compute ("-fbootclasspath=");
620 if (fclose (filelist_file))
621 pfatal_with_name (filelist_filename);
624 /* If we saw no -O or -g option, default to -g1, for javac compatibility. */
625 if (saw_g + saw_O == 0)
626 arglist[j++] = "-g1";
628 /* Read the specs file corresponding to libgcj.
629 If we didn't find the spec file on the -L path, then we hope it
630 is somewhere in the standard install areas. */
632 arglist[j++] = spec_file == NULL ? "-specs=libgcj.spec" : spec_file;
636 arglist[j++] = "-fsyntax-only";
637 arglist[j++] = "-femit-class-files";
640 arglist[j++] = "NONE";
644 arglist[j++] = "-shared-libgcc";
647 arglist[j++] = "-s-bc-abi";
653 *in_added_libraries = added_libraries;
657 lang_specific_pre_link (void)
660 if (main_class_name == NULL)
662 /* Append `main' to make the filename unique and allow
664 gcj --main=hello -save-temps hello.java
666 to work. jvgenmain needs to strip this `main' to arrive at the correct
667 class name. Append dummy `.c' that can be stripped by set_input so %b
669 set_input (concat (main_class_name, "main.c", NULL));
670 err = do_spec (jvgenmain_spec);
673 /* Shift the outfiles array so the generated main comes first.
674 This is important when linking against (non-shared) libraries,
675 since otherwise we risk (a) nothing getting linked or
676 (b) 'main' getting picked up from a library. */
678 const char *generated = outfiles[i];
680 outfiles[i + 1] = outfiles[i];
681 outfiles[0] = generated;