1 /*-------------------------------------------------------------------------
2 sdcppmain.c - sdcpp: SDCC preprocessor main file, using cpplib.
4 Written by Borut Razem, 2006.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 In other words, you are welcome to use, share and improve this program.
21 You are forbidden to forbid anyone else to use, share and improve
22 what you give them. Help stamp out software-hoarding!
23 -------------------------------------------------------------------------*/
33 #include "c-pretty-print.h"
34 #include "diagnostic.h"
36 #define CPP_FATAL_LIMIT 1000
37 /* True if we have seen a "fatal" error. */
38 #define CPP_FATAL_ERRORS(PFILE) (cpp_errors (PFILE) >= CPP_FATAL_LIMIT)
40 const char *progname; /* Needs to be global. */
42 /* From laghooks-def.h */
43 /* The whole thing. The structure is defined in langhooks.h. */
44 #define LANG_HOOKS_INITIALIZER { \
45 LANG_HOOKS_INIT_OPTIONS, \
46 LANG_HOOKS_INITIALIZE_DIAGNOSTICS, \
47 LANG_HOOKS_HANDLE_OPTION, \
48 LANG_HOOKS_MISSING_ARGUMENT, \
49 LANG_HOOKS_POST_OPTIONS, \
52 LANG_HOOKS_PRINT_ERROR_FUNCTION, \
56 #define LANG_HOOKS_INIT_OPTIONS sdcpp_common_init_options
57 #define LANG_HOOKS_INITIALIZE_DIAGNOSTICS sdcpp_initialize_diagnostics
58 #define LANG_HOOKS_HANDLE_OPTION sdcpp_common_handle_option
59 #define LANG_HOOKS_MISSING_ARGUMENT sdcpp_common_missing_argument
60 #define LANG_HOOKS_POST_OPTIONS sdcpp_common_post_options
61 #define LANG_HOOKS_INIT sdcpp_common_init
62 #define LANG_HOOKS_FINISH sdcpp_common_finish
63 #define LANG_HOOKS_PRINT_ERROR_FUNCTION sdcpp_print_error_function
65 static void sdcpp_initialize_diagnostics (diagnostic_context *context);
66 static void sdcpp_print_error_function (diagnostic_context *context, const char *file);
68 /* Each front end provides its own lang hook initializer. */
69 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
71 /* Name of top-level original source file (what was input to cpp).
72 This comes from the #-command at the beginning of the actual input.
73 If there isn't any there, then this is the cc1 input file name. */
75 const char *main_input_filename;
77 #ifndef USE_MAPPED_LOCATION
78 location_t unknown_location = { NULL, 0 };
81 /* Current position in real source file. */
83 location_t input_location;
85 struct line_maps line_table;
87 /* Stack of currently pending input files. */
89 struct file_stack *input_file_stack;
91 /* Incremented on each change to input_file_stack. */
92 int input_file_stack_tick;
94 /* Temporarily suppress certain warnings.
95 This is set while reading code from a system header file. */
97 int in_system_header = 0;
99 /* Nonzero means change certain warnings into errors.
100 Usually these are warnings about failure to conform to some standard. */
102 int flag_pedantic_errors = 0;
104 cpp_reader *parse_in; /* Declared in c-pragma.h. */
106 /* Nonzero means `char' should be signed. */
108 int flag_signed_char;
110 /* Nonzero means don't output line number information. */
112 char flag_no_line_commands;
114 /* Nonzero causes -E output not to be done, but directives such as
115 #define that have side effects are still obeyed. */
119 /* Nonzero means dump macros in some fashion. */
121 char flag_dump_macros;
123 /* Nonzero means pass #include lines through to the output. */
125 char flag_dump_includes;
127 /* 0 means we want the preprocessor to not emit line directives for
128 the current working directory. 1 means we want it to do it. -1
129 means we should decide depending on whether debugging information
130 is being emitted or not. */
132 int flag_working_directory = -1;
134 /* The current working directory of a translation. It's generally the
135 directory from which compilation was initiated, but a preprocessed
136 file may specify the original directory in which it was
139 static const char *src_pwd;
141 /* Initialize src_pwd with the given string, and return true. If it
142 was already initialized, return false. As a special case, it may
143 be called with a NULL argument to test whether src_pwd has NOT been
147 /* Opening quotation mark for diagnostics. */
148 const char *open_quote = "'";
150 /* Closing quotation mark for diagnostics. */
151 const char *close_quote = "'";
155 set_src_pwd (const char *pwd)
160 src_pwd = xstrdup (pwd);
164 /* Return the directory from which the translation unit was initiated,
165 in case set_src_pwd() was not called before to assign it a
178 sdcpp_initialize_diagnostics (diagnostic_context *context)
180 pretty_printer *base = context->printer;
181 c_pretty_printer *pp = xmalloc (sizeof (c_pretty_printer));
182 memcpy (pp_base (pp), base, sizeof (pretty_printer));
183 pp_c_pretty_printer_init (pp);
184 context->printer = (pretty_printer *) pp;
186 /* It is safe to free this object because it was previously malloc()'d. */
190 /* The default function to print out name of current function that caused
193 sdcpp_print_error_function (diagnostic_context *context, const char *file)
197 /* Initialize the PRETTY-PRINTER for handling C codes. */
200 pp_c_pretty_printer_init (c_pretty_printer *pp)
205 print_version (FILE *file, const char *indent)
207 fprintf (file, _("GNU CPP version %s (cpplib)"), version_string);
208 #ifdef TARGET_VERSION
214 /* Initialization of the front end environment, before command line
215 options are parsed. Signal handlers, internationalization etc.
216 ARGV0 is main's argv[0]. */
218 general_init (const char *argv0)
222 p = argv0 + strlen (argv0);
223 while (p != argv0 && !IS_DIR_SEPARATOR (p[-1]))
227 xmalloc_set_program_name (progname);
233 /* Initialize the diagnostics reporting machinery, so option parsing
234 can give warnings and errors. */
235 diagnostic_initialize (global_dc);
238 /* Process the options that have been parsed. */
240 process_options (void)
242 /* Allow the front end to perform consistency checks and do further
243 initialization based on the command line options. This hook also
244 sets the original filename if appropriate (e.g. foo.i -> foo.c)
245 so we can correctly initialize debug output. */
246 /*no_backend =*/ (*lang_hooks.post_options) (&main_input_filename);
247 input_filename = main_input_filename;
251 /* A warning. Use this for code which is correct according to the
252 relevant language specification but is likely to be buggy anyway. */
254 warning (const char *msgid, ...)
258 va_start (ap, msgid);
259 fprintf (stderr, "%s: error: ", progname);
260 vfprintf (stderr, msgid, ap);
264 /* A hard error: the code is definitely ill-formed, and an object file
265 will not be produced. */
267 error (const char *msgid, ...)
271 va_start (ap, msgid);
272 fprintf (stderr, "%s: warning: ", progname);
273 vfprintf (stderr, msgid, ap);
277 /* Print a fatal I/O error message. Argument are like printf.
278 Also include a system error message based on `errno'. */
280 fatal_io_error (const char *msgid, ...)
284 va_start (ap, msgid);
285 fprintf (stderr, "%s: %s: ", progname, xstrerror (errno));
286 vfprintf(stderr, msgid, ap);
288 exit (FATAL_EXIT_CODE);
292 /* Parse a -d... command line switch. */
295 decode_d_option (const char *arg)
302 case 'D': /* These are handled by the preprocessor. */
309 warning (0, "unrecognized gcc debugging option: %c", c);
314 /* Language-dependent initialization. Returns nonzero on success. */
316 lang_dependent_init (const char *name)
318 /* Other front-end initialization. */
319 if ((*lang_hooks.init) () == 0)
325 /* Clean up: close opened files, etc. */
330 /* Language-specific end of compilation actions. */
331 (*lang_hooks.finish) ();
334 /* Initialize the compiler, and compile the input file. */
340 /* Don't do any more if an error has already occurred. */
343 /* Language-dependent initialization. Returns true on success. */
344 lang_dependent_init (main_input_filename);
350 /* Entry point of cc1, cc1plus, jc1, f771, etc.
351 Exit code is FATAL_EXIT_CODE if can't open files or if there were
352 any errors, or SUCCESS_EXIT_CODE if compilation succeeded.
354 It is not safe to call this function more than once. */
357 main (unsigned int argc, const char **argv)
359 /* Initialization of GCC's environment, and diagnostics. */
360 general_init (argv[0]);
362 /* Parse the options and do minimal processing; basically just
363 enough to default flags appropriately. */
364 decode_options (argc, argv);
366 /* Exit early if we can (e.g. -help). */
367 if (!exit_after_options)
370 if (errorcount || sorrycount)
371 return (FATAL_EXIT_CODE);
373 return (SUCCESS_EXIT_CODE);