2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
36 /* no eXecute on Win32 */
41 #define O_RDWR _O_RDWR
42 #define O_CREAT _O_CREAT
43 #define O_EXCL _O_EXCL
44 #define O_BINARY _O_BINARY
46 /* remap some names, we are not in the POSIX world */
47 #define access(fname, mode) _access(fname, mode)
48 #define mktemp(tmpl) _mktemp(tmpl)
49 #define open(fname, oflag, mode) _open(fname, oflag, mode)
50 #define fdopen(fd, mode) _fdopen(fd, mode)
51 #define popen(cmd, mode) _popen(cmd, mode)
52 #define pclose(file) _pclose(file)
63 #include <libfirm/firm.h>
64 #include <libfirm/be.h>
69 #include "type_hash.h"
72 #include "diagnostic.h"
73 #include "lang_features.h"
74 #include "driver/firm_opt.h"
75 #include "driver/firm_cmdline.h"
76 #include "adt/error.h"
77 #include "write_fluffy.h"
82 #define PREPROCESSOR "cpp -std=c99 -U__WCHAR_TYPE__ -D__WCHAR_TYPE__=int -m32"
86 #define LINKER "gcc -m32"
90 #define ASSEMBLER "as --32"
93 /** The current c mode/dialect. */
94 unsigned int c_mode = _C89|_C99|_GNUC;
96 /** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */
97 unsigned int machine_size = 32;
99 /** true if the char type is signed. */
100 bool char_is_signed = true;
102 /** true for strict language checking. */
103 bool strict_mode = false;
105 /* to switch on printing of implicit casts */
106 extern bool print_implicit_casts;
108 /* to switch on printing of parenthesis to indicate operator precedence */
109 extern bool print_parenthesis;
112 static struct obstack cppflags_obst, ldflags_obst;
114 typedef struct file_list_entry_t file_list_entry_t;
116 struct file_list_entry_t {
117 const char *filename;
118 file_list_entry_t *next;
121 #if defined(_DEBUG) || defined(FIRM_DEBUG)
123 * Debug printf implementation.
125 * @param fmt printf style format parameter
127 void dbg_printf(const char *fmt, ...)
131 if (firm_dump.debug_print) {
137 #endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */
139 static void initialize_firm(void)
143 dump_consts_local(1);
144 dump_keepalive_edges(1);
147 static void get_output_name(char *buf, size_t buflen, const char *inputname,
150 size_t last_dot = 0xffffffff;
153 if(inputname == NULL) {
154 snprintf(buf, buflen, "a%s", newext);
158 for(const char *c = inputname; *c != 0; ++c) {
163 if(last_dot == 0xffffffff)
166 if(last_dot >= buflen)
167 panic("filename too long");
168 memcpy(buf, inputname, last_dot);
170 size_t extlen = strlen(newext) + 1;
171 if(extlen + last_dot >= buflen)
172 panic("filename too long");
173 memcpy(buf+last_dot, newext, extlen);
176 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
178 lexer_open_stream(in, input_name);
179 translation_unit_t *unit = parse();
183 static void lextest(FILE *in, const char *fname)
185 lexer_open_stream(in, fname);
188 lexer_next_preprocessing_token();
189 print_token(stdout, &lexer_token);
191 } while(lexer_token.type != T_EOF);
194 static FILE *preprocess(FILE *in, const char *fname, bool to_stdout)
197 obstack_1grow(&cppflags_obst, '\0');
198 const char *flags = obstack_finish(&cppflags_obst);
201 snprintf(buf, sizeof(buf), PREPROCESSOR " %s %s", flags, fname);
203 /* read from stdin */
204 snprintf(buf, sizeof(buf), PREPROCESSOR " %s -", flags);
211 int res = system(buf);
214 FILE *f = popen(buf, "r");
216 fprintf(stderr, "invoking preprocessor failed\n");
223 static void do_link(const char *out, const char *in)
226 obstack_1grow(&ldflags_obst, '\0');
227 const char *flags = obstack_finish(&ldflags_obst);
229 snprintf(buf, sizeof(buf), LINKER " %s -o %s %s", flags, out, in);
233 int err = system(buf);
235 fprintf(stderr, "linker reported an error\n");
240 static void assemble(const char *out, const char *in)
244 snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out);
249 int err = system(buf);
251 fprintf(stderr, "assembler reported an error\n");
256 static const char *try_dir(const char *dir)
260 if(access(dir, R_OK | W_OK | X_OK) == 0)
265 static const char *get_tempdir(void)
267 static const char *tmpdir = NULL;
273 tmpdir = try_dir(getenv("TMPDIR"));
275 tmpdir = try_dir(getenv("TMP"));
277 tmpdir = try_dir(getenv("TEMP"));
281 tmpdir = try_dir(P_tmpdir);
285 tmpdir = try_dir("/var/tmp");
287 tmpdir = try_dir("/usr/tmp");
289 tmpdir = try_dir("/tmp");
298 /* cheap and nasty mkstemp replacement */
299 static int mkstemp(char *templ)
302 return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
307 * an own version of tmpnam, which: writes in a buffer, appends a user specified
308 * suffix, emits no warnings during linking (like glibc/gnu ld do for tmpnam)...
310 static FILE *make_temp_file(char *buffer, size_t buflen,
311 const char *prefix, const char *suffix)
313 const char *tempdir = get_tempdir();
315 /* oh well... mkstemp doesn't accept a suffix after XXXXXX... */
319 snprintf(buffer, buflen, "%s/%sXXXXXX%s", tempdir, prefix, suffix);
321 int fd = mkstemp(buffer);
323 fprintf(stderr, "couldn't create temporary file: %s\n",
327 FILE *out = fdopen(fd, "w");
329 fprintf(stderr, "couldn't create temporary file FILE*\n");
337 * Do the necessary lowering for compound parameters.
339 void lower_compound_params(void)
341 lower_params_t params;
343 params.def_ptr_alignment = 4;
344 params.flags = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
345 params.hidden_params = ADD_HIDDEN_ALWAYS_IN_FRONT;
346 params.find_pointer_type = NULL;
347 params.ret_compound_in_regs = NULL;
348 lower_calls_with_compounds(¶ms);
351 typedef enum compile_mode_t {
365 static void usage(const char *argv0)
367 fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
370 static void print_cparser_version(void) {
372 firm_get_version(&ver);
374 printf("cparser (%s) using libFirm (%u.%u",
375 cparser_REVISION, ver.major, ver.minor);
376 if(ver.revision[0] != 0) {
378 fputs(ver.revision, stdout);
380 if(ver.build[0] != 0) {
382 fputs(ver.build, stdout);
387 static void set_be_option(const char *arg)
389 int res = firm_be_option(arg);
394 static void set_option(const char *arg)
396 int res = firm_option(arg);
401 int main(int argc, char **argv)
405 const char *input = NULL;
406 const char *outname = NULL;
407 const char *dumpfunction = NULL;
408 compile_mode_t mode = CompileAssembleLink;
410 int result = EXIT_SUCCESS;
411 char cpu_arch[16] = "ia32";
412 file_list_entry_t *c_files = NULL;
413 file_list_entry_t *s_files = NULL;
414 file_list_entry_t *o_files = NULL;
415 struct obstack file_obst;
417 obstack_init(&cppflags_obst);
418 obstack_init(&ldflags_obst);
419 obstack_init(&file_obst);
421 #define GET_ARG_AFTER(def, args) \
422 def = &arg[sizeof(args)-1]; \
423 if(def[0] == '\0') { \
426 fprintf(stderr, "error: expected argument after '" args "'\n"); \
427 argument_errors = true; \
431 if(def[0] == '-' && def[1] != '\0') { \
432 fprintf(stderr, "error: expected argument after '" args "'\n"); \
433 argument_errors = true; \
438 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
440 /* early options parsing (find out optimisation level) */
441 for(int i = 1; i < argc; ++i) {
442 const char *arg = argv[i];
446 const char *option = &arg[1];
447 if(option[0] == 'O') {
448 sscanf(&option[1], "%d", &opt_level);
452 /* apply optimisation level */
455 set_option("no-opt");
458 set_option("no-inline");
462 set_option("strict-aliasing");
465 set_option("cond-eval");
466 set_option("if-conv");
469 set_option("inline");
470 set_option("deconv");
471 set_be_option("omitfp");
475 /* parse rest of options */
476 bool help_displayed = false;
477 bool argument_errors = false;
478 for(int i = 1; i < argc; ++i) {
479 const char *arg = argv[i];
480 if(arg[0] == '-' && arg[1] != 0) {
482 const char *option = &arg[1];
483 if(option[0] == 'o') {
484 GET_ARG_AFTER(outname, "-o");
485 } else if(option[0] == 'g') {
486 set_be_option("debuginfo=stabs");
487 set_be_option("omitfp=no");
488 set_be_option("ia32-nooptcc=yes");
489 } else if(SINGLE_OPTION('c')) {
490 mode = CompileAssemble;
491 } else if(SINGLE_OPTION('E')) {
492 mode = PreprocessOnly;
493 } else if(SINGLE_OPTION('S')) {
495 } else if(option[0] == 'O') {
497 } else if(option[0] == 'I') {
499 GET_ARG_AFTER(opt, "-I");
500 obstack_printf(&cppflags_obst, " -I%s", opt);
501 } else if(option[0] == 'D') {
503 GET_ARG_AFTER(opt, "-D");
504 obstack_printf(&cppflags_obst, " -D%s", opt);
505 } else if(option[0] == 'U') {
507 GET_ARG_AFTER(opt, "-U");
508 obstack_printf(&cppflags_obst, " -U%s", opt);
509 } else if(option[0] == 'l') {
511 GET_ARG_AFTER(opt, "-l");
512 obstack_printf(&ldflags_obst, " -l%s", opt);
513 } else if(option[0] == 'L') {
515 GET_ARG_AFTER(opt, "-L");
516 obstack_printf(&ldflags_obst, " -L%s", opt);
517 } else if(SINGLE_OPTION('v')) {
519 } else if(SINGLE_OPTION('w')) {
520 inhibit_all_warnings = true;
521 } else if(option[0] == 'f') {
523 GET_ARG_AFTER(opt, "-f");
525 if(strcmp(opt, "syntax-only") == 0) {
527 } else if(strcmp(opt, "omit-frame-pointer") == 0) {
528 set_be_option("omitfp");
529 } else if(strcmp(opt, "no-omit-frame-pointer") == 0) {
530 set_be_option("omitfp=no");
532 int res = firm_option(opt);
534 fprintf(stderr, "error: unknown Firm option '-f %s'\n",
536 argument_errors = true;
538 } else if (res == -1) {
539 help_displayed = true;
542 } else if(option[0] == 'b') {
544 GET_ARG_AFTER(opt, "-b");
545 int res = firm_be_option(opt);
547 fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
549 argument_errors = true;
550 } else if (res == -1) {
551 help_displayed = true;
553 if (strncmp(opt, "isa=", 4) == 0)
554 strncpy(cpu_arch, opt, sizeof(cpu_arch));
556 } else if(option[0] == 'W') {
557 set_warning_opt(&option[1]);
558 } else if(option[0] == 'm') {
563 GET_ARG_AFTER(opt, "-m");
564 if(strncmp(opt, "arch=", 5) == 0) {
565 GET_ARG_AFTER(opt, "-march=");
566 snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
567 int res = firm_be_option(arch_opt);
569 argument_errors = true;
571 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
572 int res = firm_be_option(arch_opt);
574 argument_errors = true;
576 } else if(strncmp(opt, "tune=", 5) == 0) {
577 GET_ARG_AFTER(opt, "-mtune=");
578 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
579 int res = firm_be_option(arch_opt);
581 argument_errors = true;
582 } else if(strncmp(opt, "cpu=", 4) == 0) {
583 GET_ARG_AFTER(opt, "-mcpu=");
584 snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
585 int res = firm_be_option(arch_opt);
587 argument_errors = true;
588 } else if(strncmp(opt, "fpmath=", 7) == 0) {
589 GET_ARG_AFTER(opt, "-mfpmath=");
590 if(strcmp(opt, "387") == 0)
592 else if(strcmp(opt, "sse") == 0)
595 fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
596 argument_errors = true;
598 if(!argument_errors) {
599 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
600 int res = firm_be_option(arch_opt);
602 argument_errors = true;
604 } else if(strncmp(opt, "preferred-stack-boundary=", 25) == 0) {
605 GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
606 snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
607 int res = firm_be_option(arch_opt);
609 argument_errors = true;
610 } else if(strcmp(opt, "omit-leaf-frame-pointer") == 0) {
611 set_be_option("omitleaffp=1");
612 } else if(strcmp(opt, "no-omit-leaf-frame-pointer") == 0) {
613 set_be_option("omitleaffp=0");
616 long int value = strtol(opt, &endptr, 10);
617 if (*endptr != '\0') {
618 fprintf(stderr, "error: wrong option '-m %s'\n", opt);
619 argument_errors = true;
621 if (value != 16 && value != 32 && value != 64) {
622 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
623 argument_errors = true;
625 machine_size = (unsigned int)value;
628 } else if (option[0] == '\0') {
630 fprintf(stderr, "error: multiple input files specified\n");
631 argument_errors = true;
635 } else if(strcmp(option, "pg") == 0) {
636 set_be_option("-b gprof");
637 obstack_printf(&ldflags_obst, " -pg");
638 } else if(strcmp(option, "pedantic") == 0) {
639 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
640 } else if(strncmp(option, "std=", 4) == 0) {
641 if(strcmp(&option[4], "c99") == 0) {
643 } else if(strcmp(&option[4], "c89") == 0) {
645 } else if(strcmp(&option[4], "gnu99") == 0) {
646 c_mode = _C89|_C99|_GNUC;
647 } else if(strcmp(&option[4], "microsoft") == 0) {
648 c_mode = _C89|_C99|_MS;
650 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
651 } else if(strcmp(option, "version") == 0) {
652 print_cparser_version();
653 } else if (option[0] == '-') {
654 /* double dash option */
656 if(strcmp(option, "gcc") == 0) {
658 } else if(strcmp(option, "no-gcc") == 0) {
660 } else if(strcmp(option, "ms") == 0) {
662 } else if(strcmp(option, "no-ms") == 0) {
664 } else if(strcmp(option, "signed-chars") == 0) {
665 char_is_signed = true;
666 } else if(strcmp(option, "unsigned-chars") == 0) {
667 char_is_signed = false;
668 } else if(strcmp(option, "strict") == 0) {
670 } else if(strcmp(option, "lextest") == 0) {
672 } else if(strcmp(option, "benchmark") == 0) {
673 mode = BenchmarkParser;
674 } else if(strcmp(option, "print-ast") == 0) {
676 } else if(strcmp(option, "print-implicit-cast") == 0) {
677 print_implicit_casts = true;
678 } else if(strcmp(option, "print-parenthesis") == 0) {
679 print_parenthesis = true;
680 } else if(strcmp(option, "print-fluffy") == 0) {
682 } else if(strcmp(option, "version") == 0) {
683 print_cparser_version();
685 } else if(strcmp(option, "dump-function") == 0) {
688 fprintf(stderr, "error: "
689 "expected argument after '--dump-function'\n");
690 argument_errors = true;
693 dumpfunction = argv[i];
696 fprintf(stderr, "error: unknown argument '%s'\n", arg);
697 argument_errors = true;
700 fprintf(stderr, "error: unknown argument '%s'\n", arg);
701 argument_errors = true;
705 file_list_entry_t *entry
706 = obstack_alloc(&file_obst, sizeof(entry[0]));
707 entry->filename = arg;
709 size_t len = strlen(arg);
712 /* exception: '-' as name reads C from stdin */
713 entry->next = c_files;
717 fprintf(stderr, "'%s': file format not recognized\n", input);
721 if (strcmp(arg+len-2, ".c") == 0) {
722 entry->next = c_files;
724 } else if (strcmp(arg+len-2, ".s") == 0) {
725 entry->next = s_files;
727 } else if (strcmp(arg+len-2, ".o") == 0) {
728 entry->next = o_files;
731 fprintf(stderr, "'%s': file format not recognized\n", input);
736 if (c_files == NULL && s_files == NULL && o_files != NULL) {
738 } else if (c_files != NULL && c_files->next == NULL) {
739 input = c_files->filename;
741 if (c_files == NULL) {
742 fprintf(stderr, "error: no input files specified\n");
744 fprintf(stderr, "error: multiple input files specified\n");
746 argument_errors = true;
749 /* we do the lowering in ast2firm */
750 firm_opt.lower_bitfields = FALSE;
752 if (help_displayed) {
753 return !argument_errors;
755 if (argument_errors) {
772 char outnamebuf[4096];
773 if(outname == NULL) {
775 case BenchmarkParser:
787 get_output_name(outnamebuf, sizeof(outnamebuf), input, ".s");
788 outname = outnamebuf;
790 case CompileAssemble:
791 get_output_name(outnamebuf, sizeof(outnamebuf), input, ".o");
792 outname = outnamebuf;
795 get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
797 outname = outnamebuf;
800 case CompileAssembleLink:
802 /* Windows compiler typically derive the output name from
803 the first source file */
804 get_output_name(outnamebuf, sizeof(outnamebuf), input, ".exe");
805 outname = outnamebuf;
814 obstack_1grow(&ldflags_obst, '\0');
815 const char *flags = obstack_finish(&ldflags_obst);
817 obstack_printf(&file_obst, "%s", LINKER);
819 for (file_list_entry_t *entry = o_files; entry != NULL;
820 entry = entry->next) {
821 obstack_printf(&file_obst, " %s", entry->filename);
824 obstack_printf(&file_obst, " -o %s %s", outname, flags);
826 char *buf = obstack_finish(&file_obst);
831 int err = system(buf);
833 fprintf(stderr, "linker reported an error\n");
839 if(outname != NULL) {
840 if(strcmp(outname, "-") == 0) {
843 out = fopen(outname, "w");
845 fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname,
854 fprintf(stderr, "%s: no input files\n", argv[0]);
856 } else if(strcmp(input, "-") == 0) {
860 in = fopen(input, "r");
862 fprintf(stderr, "Couldn't open '%s': %s\n", input, strerror(errno));
867 if(mode == LexTest) {
873 FILE *preprocessed_in = preprocess(in, input, mode == PreprocessOnly);
874 translation_unit_t *const unit = do_parsing(preprocessed_in, input);
875 int res = pclose(preprocessed_in);
880 if(error_count > 0) {
881 /* parsing failed because of errors */
882 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count, warning_count);
883 result = EXIT_FAILURE;
884 } else if(warning_count > 0) {
885 fprintf(stderr, "%u warning(s)\n", warning_count);
888 if(mode == BenchmarkParser) {
892 /* prints the AST even if errors occurred */
893 if(mode == PrintAst) {
894 type_set_output(out);
900 /* cannot handle other modes with errors */
901 if(result != EXIT_SUCCESS)
904 if(mode == PrintFluffy) {
905 type_set_output(out);
907 write_fluffy_decls(out, unit);
910 translation_unit_to_firm(unit);
912 if(mode == ParseOnly) {
917 char asm_tempfile[1024];
918 if(mode == CompileDump) {
920 firm_be_opt.selection = BE_NONE;
921 } else if(mode == Compile) {
925 = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "cc", ".s");
927 gen_firm_finish(asm_out, input, /*c_mode=*/1, /*firm_const_exists=*/0);
929 if(mode == CompileDump) {
931 ident *id = new_id_from_str(dumpfunction);
932 ir_graph *irg = NULL;
933 int n_irgs = get_irp_n_irgs();
934 for(int i = 0; i < n_irgs; ++i) {
935 ir_graph *tirg = get_irp_irg(i);
936 ident *irg_id = get_entity_ident(get_irg_entity(tirg));
944 fprintf(stderr, "No graph for function '%s' found\n", dumpfunction);
948 dump_ir_block_graph_file(irg, out);
955 /* assemble assembler and create object file */
956 char obj_tfile[1024];
957 if(mode == CompileAssemble || mode == CompileAssembleLink) {
958 const char *obj_outfile;
959 if(mode == CompileAssemble) {
961 obj_outfile = outname;
964 = make_temp_file(obj_tfile, sizeof(obj_tfile), "cc", ".o");
966 obj_outfile = obj_tfile;
969 assemble(obj_outfile, asm_tempfile);
972 /* link object file */
973 if(mode == CompileAssembleLink) {
974 do_link(outname, obj_tfile);
977 obstack_free(&cppflags_obst, NULL);
978 obstack_free(&ldflags_obst, NULL);
979 obstack_free(&file_obst, NULL);