2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 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)
53 #define unlink(filename) _unlink(filename)
60 #include <libfirm/firm.h>
61 #include <libfirm/be.h>
63 #include "preprocessor.h"
66 #include "type_hash.h"
70 #include "diagnostic.h"
71 #include "lang_features.h"
72 #include "driver/firm_opt.h"
73 #include "driver/firm_timing.h"
74 #include "driver/firm_machine.h"
75 #include "adt/error.h"
76 #include "adt/strutil.h"
77 #include "wrappergen/write_fluffy.h"
78 #include "wrappergen/write_jna.h"
87 #define PREPROCESSOR "gcc -E -U__STRICT_ANSI__"
89 #define PREPROCESSOR "cpp -U__STRICT_ANSI__"
98 #define ASSEMBLER "gcc -c -xassembler"
101 unsigned int c_mode = _C89 | _C99 | _GNUC;
102 bool byte_order_big_endian = false;
103 bool strict_mode = false;
104 bool enable_main_collect2_hack = false;
105 bool freestanding = false;
106 unsigned architecture_modulo_shift = 0;
108 static bool char_is_signed = true;
109 static atomic_type_kind_t wchar_atomic_kind = ATOMIC_TYPE_INT;
111 static machine_triple_t *target_machine;
112 static const char *target_triple;
114 static struct obstack cppflags_obst;
115 static struct obstack ldflags_obst;
116 static struct obstack asflags_obst;
117 static char dep_target[1024];
118 static const char *outname;
119 static bool define_intmax_types;
120 static const char *input_encoding;
122 typedef enum lang_standard_t {
123 STANDARD_DEFAULT, /* gnu99 (for C, GCC does gnu89) or gnu++98 (for C++) */
124 STANDARD_ANSI, /* ISO C90 (for C) or ISO C++ 1998 (for C++) */
125 STANDARD_C89, /* ISO C90 (sic) */
126 STANDARD_C89AMD1, /* ISO C90 as modified in amendment 1 */
127 STANDARD_C99, /* ISO C99 */
128 STANDARD_GNU89, /* ISO C90 plus GNU extensions (including some C99) */
129 STANDARD_GNU99, /* ISO C99 plus GNU extensions */
130 STANDARD_CXX98, /* ISO C++ 1998 plus amendments */
131 STANDARD_GNUXX98 /* ISO C++ 1998 plus amendments and GNU extensions */
134 typedef struct file_list_entry_t file_list_entry_t;
136 typedef enum filetype_t {
139 FILETYPE_PREPROCESSED_C,
141 FILETYPE_PREPROCESSED_CXX,
143 FILETYPE_PREPROCESSED_ASSEMBLER,
149 struct file_list_entry_t {
150 const char *name; /**< filename or NULL for stdin */
152 file_list_entry_t *next;
155 static file_list_entry_t *temp_files;
157 static void get_output_name(char *buf, size_t buflen, const char *inputname,
160 if (inputname == NULL)
163 char const *const last_slash = strrchr(inputname, '/');
164 char const *const filename =
165 last_slash != NULL ? last_slash + 1 : inputname;
166 char const *const last_dot = strrchr(filename, '.');
167 char const *const name_end =
168 last_dot != NULL ? last_dot : strchr(filename, '\0');
170 int const len = snprintf(buf, buflen, "%.*s%s",
171 (int)(name_end - filename), filename, newext);
173 if (len < 0 || buflen <= (size_t)len)
175 if (buflen <= (size_t)len)
177 panic("filename too long");
180 static translation_unit_t *do_parsing(FILE *const in, const char *const input_name)
184 switch_input(in, input_name);
186 translation_unit_t *unit = finish_parsing();
192 static void lextest(FILE *in, const char *fname)
194 switch_input(in, fname);
196 next_preprocessing_token();
197 print_token(stdout, &pp_token);
199 } while (pp_token.kind != T_EOF);
203 static void add_flag(struct obstack *obst, const char *format, ...)
208 va_start(ap, format);
212 vsnprintf(buf, sizeof(buf), format, ap);
215 obstack_1grow(obst, ' ');
217 obstack_1grow(obst, '"');
218 obstack_grow(obst, buf, len);
219 obstack_1grow(obst, '"');
221 /* escape stuff... */
222 for (char *c = buf; *c != '\0'; ++c) {
240 obstack_1grow(obst, '\\');
243 obstack_1grow(obst, *c);
250 static const char *type_to_string(type_t *type)
252 assert(type->kind == TYPE_ATOMIC);
253 return get_atomic_kind_name(type->atomic.akind);
256 static char const* str_lang_standard(lang_standard_t const standard)
259 case STANDARD_C89: return "c89";
260 case STANDARD_C89AMD1: return "iso9899:199409";
261 case STANDARD_C99: return "c99";
262 case STANDARD_GNU89: return "gnu89";
263 case STANDARD_GNU99: return "gnu99";
264 case STANDARD_CXX98: return "c++98";
265 case STANDARD_GNUXX98: return "gnu++98";
266 case STANDARD_ANSI: break;
267 case STANDARD_DEFAULT: break;
269 panic("invalid standard");
272 static FILE *preprocess(const char *fname, filetype_t filetype,
273 lang_standard_t standard)
275 static const char *common_flags = NULL;
277 if (common_flags == NULL) {
278 obstack_1grow(&cppflags_obst, '\0');
279 const char *flags = obstack_finish(&cppflags_obst);
281 /* setup default defines */
282 add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
283 add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
284 add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
285 add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
287 add_flag(&cppflags_obst, "-U__VERSION__");
288 add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
290 if (define_intmax_types) {
291 add_flag(&cppflags_obst, "-U__INTMAX_TYPE__");
292 add_flag(&cppflags_obst, "-D__INTMAX_TYPE__=%s", type_to_string(type_intmax_t));
293 add_flag(&cppflags_obst, "-U__UINTMAX_TYPE__");
294 add_flag(&cppflags_obst, "-D__UINTMAX_TYPE__=%s", type_to_string(type_uintmax_t));
297 if (flags[0] != '\0') {
298 size_t len = strlen(flags);
299 obstack_1grow(&cppflags_obst, ' ');
300 obstack_grow(&cppflags_obst, flags, len);
302 obstack_1grow(&cppflags_obst, '\0');
303 common_flags = obstack_finish(&cppflags_obst);
306 assert(obstack_object_size(&cppflags_obst) == 0);
308 const char *preprocessor = getenv("CPARSER_PP");
309 if (preprocessor != NULL) {
310 obstack_printf(&cppflags_obst, "%s ", preprocessor);
312 if (target_triple != NULL)
313 obstack_printf(&cppflags_obst, "%s-", target_triple);
314 obstack_printf(&cppflags_obst, PREPROCESSOR);
319 case FILETYPE_C: lang = "c"; break;
320 case FILETYPE_CXX: lang = "c++"; break;
321 case FILETYPE_ASSEMBLER: lang = "assembler-with-cpp"; break;
322 default: lang = NULL; break;
325 add_flag(&cppflags_obst, "-x%s", lang);
327 add_flag(&cppflags_obst, "-std=%s", str_lang_standard(standard));
329 obstack_printf(&cppflags_obst, "%s", common_flags);
331 /* handle dependency generation */
332 if (dep_target[0] != '\0') {
333 add_flag(&cppflags_obst, "-MF");
334 add_flag(&cppflags_obst, dep_target);
335 if (outname != NULL) {
336 add_flag(&cppflags_obst, "-MQ");
337 add_flag(&cppflags_obst, outname);
340 add_flag(&cppflags_obst, fname);
341 obstack_1grow(&cppflags_obst, '\0');
343 char *commandline = obstack_finish(&cppflags_obst);
347 FILE *f = popen(commandline, "r");
349 fprintf(stderr, "invoking preprocessor failed\n");
352 /* we do not really need that anymore */
353 obstack_free(&cppflags_obst, commandline);
358 static void assemble(const char *out, const char *in)
360 obstack_1grow(&asflags_obst, '\0');
361 const char *flags = obstack_finish(&asflags_obst);
363 const char *assembler = getenv("CPARSER_AS");
364 if (assembler != NULL) {
365 obstack_printf(&asflags_obst, "%s", assembler);
367 if (target_triple != NULL)
368 obstack_printf(&asflags_obst, "%s-", target_triple);
369 obstack_printf(&asflags_obst, "%s", ASSEMBLER);
371 if (flags[0] != '\0')
372 obstack_printf(&asflags_obst, " %s", flags);
374 obstack_printf(&asflags_obst, " %s -o %s", in, out);
375 obstack_1grow(&asflags_obst, '\0');
377 char *commandline = obstack_finish(&asflags_obst);
381 int err = system(commandline);
382 if (err != EXIT_SUCCESS) {
383 fprintf(stderr, "assembler reported an error\n");
386 obstack_free(&asflags_obst, commandline);
389 static void print_file_name(const char *file)
391 add_flag(&ldflags_obst, "-print-file-name=%s", file);
393 obstack_1grow(&ldflags_obst, '\0');
394 const char *flags = obstack_finish(&ldflags_obst);
396 /* construct commandline */
397 const char *linker = getenv("CPARSER_LINK");
398 if (linker != NULL) {
399 obstack_printf(&ldflags_obst, "%s ", linker);
401 if (target_triple != NULL)
402 obstack_printf(&ldflags_obst, "%s-", target_triple);
403 obstack_printf(&ldflags_obst, "%s ", LINKER);
405 obstack_printf(&ldflags_obst, "%s ", linker);
406 obstack_printf(&ldflags_obst, "%s", flags);
407 obstack_1grow(&ldflags_obst, '\0');
409 char *commandline = obstack_finish(&ldflags_obst);
413 int err = system(commandline);
414 if (err != EXIT_SUCCESS) {
415 fprintf(stderr, "linker reported an error\n");
418 obstack_free(&ldflags_obst, commandline);
421 static const char *try_dir(const char *dir)
425 if (access(dir, R_OK | W_OK | X_OK) == 0)
430 static const char *get_tempdir(void)
432 static const char *tmpdir = NULL;
438 tmpdir = try_dir(getenv("TMPDIR"));
440 tmpdir = try_dir(getenv("TMP"));
442 tmpdir = try_dir(getenv("TEMP"));
446 tmpdir = try_dir(P_tmpdir);
450 tmpdir = try_dir("/var/tmp");
452 tmpdir = try_dir("/usr/tmp");
454 tmpdir = try_dir("/tmp");
463 /* cheap and nasty mkstemp replacement */
464 static int mkstemp(char *templ)
467 return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600);
472 * an own version of tmpnam, which: writes in a buffer, emits no warnings
473 * during linking (like glibc/gnu ld do for tmpnam)...
475 static FILE *make_temp_file(char *buffer, size_t buflen, const char *prefix)
477 const char *tempdir = get_tempdir();
479 snprintf(buffer, buflen, "%s/%sXXXXXX", tempdir, prefix);
481 int fd = mkstemp(buffer);
483 fprintf(stderr, "could not create temporary file: %s\n",
487 FILE *out = fdopen(fd, "w");
489 fprintf(stderr, "could not create temporary file FILE*\n");
493 file_list_entry_t *entry = xmalloc(sizeof(*entry));
494 memset(entry, 0, sizeof(*entry));
496 size_t name_len = strlen(buffer) + 1;
497 char *name = malloc(name_len);
498 memcpy(name, buffer, name_len);
501 entry->next = temp_files;
507 static void free_temp_files(void)
509 file_list_entry_t *entry = temp_files;
510 file_list_entry_t *next;
511 for ( ; entry != NULL; entry = next) {
515 free((char*) entry->name);
521 typedef enum compile_mode_t {
536 static void usage(const char *argv0)
538 fprintf(stderr, "Usage %s [options] input [-o output]\n", argv0);
541 static void print_cparser_version(void)
543 printf("cparser (%s) using libFirm (%u.%u",
544 cparser_REVISION, ir_get_version_major(),
545 ir_get_version_minor());
547 const char *revision = ir_get_version_revision();
548 if (revision[0] != 0) {
550 fputs(revision, stdout);
553 const char *build = ir_get_version_build();
556 fputs(build, stdout);
559 puts("This is free software; see the source for copying conditions. There is NO\n"
560 "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
563 static void print_cparser_version_short(void)
565 puts(cparser_REVISION);
568 static void print_help_basic(const char *argv0)
572 put_help("--help", "Display this information");
573 put_help("--version", "Display compiler version");
574 put_help("--help-parser", "Display information about parser options");
575 put_help("--help-warnings", "Display information about warning options");
576 put_help("--help-codegen", "Display information about code-generation options");
577 put_help("--help-optimization", "Display information about optimization options");
578 put_help("--help-linker", "Display information about linker options");
579 put_help("--help-language-tools", "Display information about language tools options");
580 put_help("--help-debug", "Display information about compiler debugging options");
581 put_help("--help-firm", "Display information about direct firm options");
582 put_help("--help-all", "Display information about all options");
583 put_help("-c", "Compile and assemble but do not link");
584 put_help("-E", "Preprocess only");
585 put_help("-S", "Compile but do not assembler or link");
586 put_help("-o", "Specify output file");
587 put_help("-v", "Verbose output (show invocation of sub-processes)");
588 put_help("-x", "Force input language:");
589 put_choice("c", "C");
590 put_choice("c++", "C++");
591 put_choice("assembler", "Assembler (no preprocessing)");
592 put_choice("assembler-with-cpp", "Assembler with preprocessing");
593 put_choice("none", "Autodetection");
594 put_help("-pipe", "Ignored (gcc compatibility)");
597 static void print_help_preprocessor(void)
599 put_help("-nostdinc", "Do not search standard system include directories");
600 put_help("-trigraphs", "Support ISO C trigraphs");
601 put_help("-isystem", "");
602 put_help("-include", "");
603 put_help("-I PATH", "");
604 put_help("-D SYMBOL[=value]", "");
605 put_help("-U SYMBOL", "");
606 put_help("-Wp,OPTION", "Pass option directly to preprocessor");
609 put_help("-MMD", "");
617 static void print_help_parser(void)
619 put_help("-finput-charset=CHARSET", "Select encoding of input files");
620 put_help("-fmessage-length=LEN", "Ignored (gcc compatibility)");
621 put_help("-fshort-wchar", "Type \"wchar_t\" is unsigned short instead of int");
622 put_help("-fshow-column", "Show the column number in diagnostic messages");
623 put_help("-fsigned-char", "Type \"char\" is a signed type");
624 put_help("-funsigned-char", "Type \"char\" is an unsigned type");
625 put_help("--ms", "Enable msvc extensions");
626 put_help("--no-ms", "Disable msvc extensions");
627 put_help("--gcc", "Enable gcc extensions");
628 put_help("--no-gcc", "Disable gcc extensions");
629 put_help("-std=STANDARD", "Specify language standard:");
630 put_choice("c99", "ISO C99 standard");
631 put_choice("c89", "ISO C89 standard");
632 put_choice("c90", "Same as -std=c89");
633 put_choice("c9x", "Deprecated");
634 put_choice("c++", "ISO C++ 98");
635 put_choice("c++98", "ISO C++ 98");
636 put_choice("gnu99", "ISO C99 + GNU extensions (default)");
637 put_choice("gnu89", "ISO C89 + GNU extensions");
638 put_choice("gnu9x", "Deprecated");
639 put_choice("iso9899:1990", "ISO C89");
640 put_choice("iso9899:199409", "ISO C90");
641 put_choice("iso9899:1999", "ISO C99");
642 put_choice("iso9899:199x", "Deprecated");
643 put_help("-pedantic", "Ignored (gcc compatibility)");
644 put_help("-ansi", "-std=c90 (for C) or -std=c++98 (for C++)");
645 put_help("--strict", "Enable strict conformance checking");
648 static void print_help_warnings(void)
650 put_help("-f[no-]diagnostics-show-option", "Show the switch, which controls a warning, after each warning");
651 put_help("-w", "Disable all warnings");
652 put_help("-Wno-trigraphs", "Warn if input contains trigraphs");
653 put_help("-Wundef", "Warn if an undefined macro is used in an #if");
654 put_help("-Wmissing-include-dirs", "Warn about missing user-specified include directories");
655 put_help("-Wendif-labels", "Warn about stray text after #elif and #endif");
656 put_help("-Winit-self", "Ignored (gcc compatibility)");
657 put_help("-Wformat-y2k", "Ignored (gcc compatibility)");
658 put_help("-Wformat-security", "Ignored (gcc compatibility)");
659 put_help("-Wold-style-declaration", "Ignored (gcc compatibility)");
660 put_help("-Wtype-limits", "Ignored (gcc compatibility)");
661 print_warning_opt_help();
664 static void print_help_optimization(void)
666 put_help("-O LEVEL", "Select optimization level (0-4)");
667 firm_option_help(put_help);
668 put_help("-fexpensive-optimizations","Ignored (gcc compatibility)");
671 static void print_help_codegeneration(void)
673 put_help("-g", "Generate debug information");
674 put_help("-pg", "Instrument code for gnu gprof");
675 put_help("-fomit-frame-pointer", "Produce code without frame pointer where possible");
676 put_help("-ffreestanding", "Compile in freestanding mode (see ISO C standard)");
677 put_help("-fhosted", "Compile in hosted (not freestanding) mode");
678 put_help("-fprofile-generate", "Generate instrumented code to collect profile information");
679 put_help("-fprofile-use", "Use profile information generated by instrumented binaries");
680 put_help("-ffp-precise", "Precise floating point model");
681 put_help("-ffp-fast", "Imprecise floating point model");
682 put_help("-ffp-strict", "Strict floating point model");
683 put_help("-pthread", "Use pthread threading library");
684 put_help("-mtarget=TARGET", "Specify target architecture as CPU-manufacturer-OS triple");
685 put_help("-mtriple=TARGET", "Alias for -mtarget (clang compatibility)");
686 put_help("-march=ARCH", "");
687 put_help("-mtune=ARCH", "");
688 put_help("-mcpu=CPU", "");
689 put_help("-mfpmath=", "");
690 put_help("-mpreferred-stack-boundary=", "");
691 put_help("-mrtd", "");
692 put_help("-mregparm=", "Not supported yet");
693 put_help("-msoft-float", "Not supported yet");
694 put_help("-m32", "Generate 32bit code");
695 put_help("-m64", "Generate 64bit code");
696 put_help("-fverbose-asm", "Ignored (gcc compatibility)");
697 put_help("-fjump-tables", "Ignored (gcc compatibility)");
698 put_help("-fcommon", "Ignored (gcc compatibility)");
699 put_help("-foptimize-sibling-calls", "Ignored (gcc compatibility)");
700 put_help("-falign-loops", "Ignored (gcc compatibility)");
701 put_help("-falign-jumps", "Ignored (gcc compatibility)");
702 put_help("-falign-functions", "Ignored (gcc compatibility)");
703 put_help("-fPIC", "Ignored (gcc compatibility)");
704 put_help("-ffast-math", "Same as -ffp-fast (gcc compatibility)");
706 puts("\tMost of these options can be used with a no- prefix to disable them");
707 puts("\te.g. -fno-omit-frame-pointer");
710 static void print_help_linker(void)
712 put_help("-l LIBRARY", "");
713 put_help("-L PATH", "");
714 put_help("-s", "Do not produce symbol table and relocation information");
715 put_help("-shared", "Produce a shared library");
716 put_help("-static", "Produce statically linked binary");
717 put_help("-Wl,OPTION", "Pass option directly to linker");
720 static void print_help_debug(void)
722 put_help("--lextest", "Preprocess and tokenize only");
723 put_help("--print-ast", "Preprocess, parse and print AST");
724 put_help("--print-implicit-cast", "");
725 put_help("--print-parenthesis", "");
726 put_help("--benchmark", "Preprocess and parse, produces no output");
727 put_help("--time", "Measure time of compiler passes");
728 put_help("--dump-function func", "Preprocess, parse and output vcg graph of func");
729 put_help("--export-ir", "Preprocess, parse and output compiler intermediate representation");
732 static void print_help_language_tools(void)
734 put_help("--print-fluffy", "Preprocess, parse and generate declarations for the fluffy language");
735 put_help("--print-jna", "Preprocess, parse and generate declarations for JNA");
736 put_help("--jna-limit filename", "");
737 put_help("--jna-libname name", "");
740 static void print_help_firm(void)
742 put_help("-bOPTION", "Directly pass option to libFirm backend");
743 int res = be_parse_arg("help");
751 HELP_PREPROCESSOR = 1 << 1,
752 HELP_PARSER = 1 << 2,
753 HELP_WARNINGS = 1 << 3,
754 HELP_OPTIMIZATION = 1 << 4,
755 HELP_CODEGEN = 1 << 5,
756 HELP_LINKER = 1 << 6,
757 HELP_LANGUAGETOOLS = 1 << 7,
764 static void print_help(const char *argv0, help_sections_t sections)
766 if (sections & HELP_BASIC) print_help_basic(argv0);
767 if (sections & HELP_PREPROCESSOR) print_help_preprocessor();
768 if (sections & HELP_PARSER) print_help_parser();
769 if (sections & HELP_WARNINGS) print_help_warnings();
770 if (sections & HELP_OPTIMIZATION) print_help_optimization();
771 if (sections & HELP_CODEGEN) print_help_codegeneration();
772 if (sections & HELP_LINKER) print_help_linker();
773 if (sections & HELP_LANGUAGETOOLS) print_help_language_tools();
774 if (sections & HELP_DEBUG) print_help_debug();
775 if (sections & HELP_FIRM) print_help_firm();
778 static void set_be_option(const char *arg)
780 int res = be_parse_arg(arg);
785 static void copy_file(FILE *dest, FILE *input)
789 while (!feof(input) && !ferror(dest)) {
790 size_t read = fread(buf, 1, sizeof(buf), input);
791 if (fwrite(buf, 1, read, dest) != read) {
792 perror("could not write output");
797 static FILE *open_file(const char *filename)
799 if (streq(filename, "-")) {
803 FILE *in = fopen(filename, "r");
805 fprintf(stderr, "Could not open '%s': %s\n", filename,
813 static filetype_t get_filetype_from_string(const char *string)
815 if (streq(string, "c") || streq(string, "c-header"))
817 if (streq(string, "c++") || streq(string, "c++-header"))
819 if (streq(string, "assembler"))
820 return FILETYPE_PREPROCESSED_ASSEMBLER;
821 if (streq(string, "assembler-with-cpp"))
822 return FILETYPE_ASSEMBLER;
823 if (streq(string, "none"))
824 return FILETYPE_AUTODETECT;
826 return FILETYPE_UNKNOWN;
829 static bool init_os_support(void)
831 wchar_atomic_kind = ATOMIC_TYPE_INT;
832 enable_main_collect2_hack = false;
833 define_intmax_types = false;
835 if (firm_is_unixish_os(target_machine)) {
836 set_create_ld_ident(create_name_linux_elf);
837 } else if (firm_is_darwin_os(target_machine)) {
838 set_create_ld_ident(create_name_macho);
839 define_intmax_types = true;
840 } else if (firm_is_windows_os(target_machine)) {
841 wchar_atomic_kind = ATOMIC_TYPE_USHORT;
842 enable_main_collect2_hack = true;
843 set_create_ld_ident(create_name_win32);
851 static bool parse_target_triple(const char *arg)
853 machine_triple_t *triple = firm_parse_machine_triple(arg);
854 if (triple == NULL) {
855 fprintf(stderr, "Target-triple is not in the form 'cpu_type-manufacturer-operating_system'\n");
858 target_machine = triple;
862 static unsigned decide_modulo_shift(unsigned type_size)
864 if (architecture_modulo_shift == 0)
866 if (type_size < architecture_modulo_shift)
867 return architecture_modulo_shift;
871 static bool is_ia32_cpu(const char *architecture)
873 return streq(architecture, "i386")
874 || streq(architecture, "i486")
875 || streq(architecture, "i586")
876 || streq(architecture, "i686")
877 || streq(architecture, "i786");
880 static const char *setup_isa_from_tripel(const machine_triple_t *machine)
882 const char *cpu = machine->cpu_type;
884 if (is_ia32_cpu(cpu)) {
886 } else if (streq(cpu, "x86_64")) {
888 } else if (streq(cpu, "sparc")) {
890 } else if (streq(cpu, "arm")) {
893 fprintf(stderr, "Unknown cpu '%s' in target-triple\n", cpu);
898 static const char *setup_target_machine(void)
900 if (!setup_firm_for_machine(target_machine))
903 const char *isa = setup_isa_from_tripel(target_machine);
914 * initialize cparser type properties based on a firm type
916 static void set_typeprops_type(atomic_type_properties_t* props, ir_type *type)
918 props->size = get_type_size_bytes(type);
919 props->alignment = get_type_alignment_bytes(type);
920 props->struct_alignment = props->alignment;
924 * Copy atomic type properties except the integer conversion rank
926 static void copy_typeprops(atomic_type_properties_t *dest,
927 const atomic_type_properties_t *src)
929 dest->size = src->size;
930 dest->alignment = src->alignment;
931 dest->struct_alignment = src->struct_alignment;
932 dest->flags = src->flags;
935 static void init_types_and_adjust(void)
937 const backend_params *be_params = be_get_backend_param();
938 unsigned machine_size = be_params->machine_size;
939 init_types(machine_size);
941 atomic_type_properties_t *props = atomic_type_properties;
943 /* adjust types as requested by target architecture */
944 ir_type *type_long_double = be_params->type_long_double;
945 if (type_long_double != NULL) {
946 set_typeprops_type(&props[ATOMIC_TYPE_LONG_DOUBLE], type_long_double);
947 atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = get_type_mode(type_long_double);
950 ir_type *type_long_long = be_params->type_long_long;
951 if (type_long_long != NULL)
952 set_typeprops_type(&props[ATOMIC_TYPE_LONGLONG], type_long_long);
954 ir_type *type_unsigned_long_long = be_params->type_unsigned_long_long;
955 if (type_unsigned_long_long != NULL)
956 set_typeprops_type(&props[ATOMIC_TYPE_ULONGLONG], type_unsigned_long_long);
958 /* operating system ABI specifics */
959 if (firm_is_darwin_os(target_machine)) {
960 if (machine_size == 32) {
961 props[ATOMIC_TYPE_LONGLONG].struct_alignment = 4;
962 props[ATOMIC_TYPE_ULONGLONG].struct_alignment = 4;
963 props[ATOMIC_TYPE_DOUBLE].struct_alignment = 4;
964 props[ATOMIC_TYPE_LONG_DOUBLE].size = 16;
965 props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 16;
966 props[ATOMIC_TYPE_LONG_DOUBLE].struct_alignment = 16;
968 } else if (firm_is_windows_os(target_machine)) {
969 if (machine_size == 64) {
970 /* to ease porting of old c-code microsoft decided to use 32bits
972 props[ATOMIC_TYPE_LONG] = props[ATOMIC_TYPE_INT];
973 props[ATOMIC_TYPE_ULONG] = props[ATOMIC_TYPE_UINT];
976 /* on windows long double is not supported */
977 props[ATOMIC_TYPE_LONG_DOUBLE] = props[ATOMIC_TYPE_DOUBLE];
978 } else if (firm_is_unixish_os(target_machine)) {
979 if (is_ia32_cpu(target_machine->cpu_type)) {
980 /* System V has a broken alignment for double so we have to add
982 props[ATOMIC_TYPE_DOUBLE].struct_alignment = 4;
983 props[ATOMIC_TYPE_LONGLONG].struct_alignment = 4;
984 props[ATOMIC_TYPE_ULONGLONG].struct_alignment = 4;
988 /* stuff decided after processing operating system specifics and
989 * commandline flags */
990 if (char_is_signed) {
991 props[ATOMIC_TYPE_CHAR].flags |= ATOMIC_TYPE_FLAG_SIGNED;
993 props[ATOMIC_TYPE_CHAR].flags &= ~ATOMIC_TYPE_FLAG_SIGNED;
995 /* copy over wchar_t properties (including rank) */
996 props[ATOMIC_TYPE_WCHAR_T] = props[wchar_atomic_kind];
998 /* initialize defaults for unsupported types */
999 if (type_long_long == NULL) {
1000 copy_typeprops(&props[ATOMIC_TYPE_LONGLONG], &props[ATOMIC_TYPE_LONG]);
1002 if (type_unsigned_long_long == NULL) {
1003 copy_typeprops(&props[ATOMIC_TYPE_ULONGLONG],
1004 &props[ATOMIC_TYPE_ULONG]);
1006 if (type_long_double == NULL) {
1007 copy_typeprops(&props[ATOMIC_TYPE_LONG_DOUBLE],
1008 &props[ATOMIC_TYPE_DOUBLE]);
1011 /* initialize firm pointer modes */
1013 unsigned bit_size = machine_size;
1014 unsigned modulo_shift = decide_modulo_shift(bit_size);
1016 snprintf(name, sizeof(name), "p%u", machine_size);
1017 ir_mode *ptr_mode = new_reference_mode(name, irma_twos_complement, bit_size, modulo_shift);
1019 if (machine_size == 16) {
1020 set_reference_mode_signed_eq(ptr_mode, mode_Hs);
1021 set_reference_mode_unsigned_eq(ptr_mode, mode_Hu);
1022 } else if (machine_size == 32) {
1023 set_reference_mode_signed_eq(ptr_mode, mode_Is);
1024 set_reference_mode_unsigned_eq(ptr_mode, mode_Iu);
1025 } else if (machine_size == 64) {
1026 set_reference_mode_signed_eq(ptr_mode, mode_Ls);
1027 set_reference_mode_unsigned_eq(ptr_mode, mode_Lu);
1029 panic("strange machine_size when determining pointer modes");
1032 /* Hmm, pointers should be machine size */
1033 set_modeP_data(ptr_mode);
1034 set_modeP_code(ptr_mode);
1036 byte_order_big_endian = be_params->byte_order_big_endian;
1037 if (be_params->modulo_shift_efficient) {
1038 architecture_modulo_shift = machine_size;
1040 architecture_modulo_shift = 0;
1044 int main(int argc, char **argv)
1046 const char *dumpfunction = NULL;
1047 const char *print_file_name_file = NULL;
1048 compile_mode_t mode = CompileAssembleLink;
1050 int result = EXIT_SUCCESS;
1051 char cpu_arch[16] = "ia32";
1052 file_list_entry_t *files = NULL;
1053 file_list_entry_t *last_file = NULL;
1054 bool construct_dep_target = false;
1055 bool do_timing = false;
1056 bool profile_generate = false;
1057 bool profile_use = false;
1058 struct obstack file_obst;
1060 atexit(free_temp_files);
1062 /* hack for now... */
1063 if (strstr(argv[0], "pptest") != NULL) {
1064 extern int pptest_main(int argc, char **argv);
1065 return pptest_main(argc, argv);
1068 obstack_init(&cppflags_obst);
1069 obstack_init(&ldflags_obst);
1070 obstack_init(&asflags_obst);
1071 obstack_init(&file_obst);
1073 #define GET_ARG_AFTER(def, args) \
1075 def = &arg[sizeof(args)-1]; \
1076 if (def[0] == '\0') { \
1079 fprintf(stderr, "error: expected argument after '" args "'\n"); \
1080 argument_errors = true; \
1084 if (def[0] == '-' && def[1] != '\0') { \
1085 fprintf(stderr, "error: expected argument after '" args "'\n"); \
1086 argument_errors = true; \
1092 #define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0')
1094 /* initialize this early because it has to parse options */
1097 /* early options parsing (find out optimization level and OS) */
1098 for (int i = 1; i < argc; ++i) {
1099 const char *arg = argv[i];
1103 const char *option = &arg[1];
1104 if (option[0] == 'O') {
1105 sscanf(&option[1], "%d", &opt_level);
1109 if (target_machine == NULL) {
1110 target_machine = firm_get_host_machine();
1112 choose_optimization_pack(opt_level);
1113 setup_target_machine();
1115 /* parse rest of options */
1116 lang_standard_t standard = STANDARD_DEFAULT;
1117 unsigned features_on = 0;
1118 unsigned features_off = 0;
1119 filetype_t forced_filetype = FILETYPE_AUTODETECT;
1120 help_sections_t help = HELP_NONE;
1121 bool argument_errors = false;
1122 for (int i = 1; i < argc; ++i) {
1123 const char *arg = argv[i];
1124 if (arg[0] == '-' && arg[1] != '\0') {
1126 const char *option = &arg[1];
1127 if (option[0] == 'o') {
1128 GET_ARG_AFTER(outname, "-o");
1129 } else if (option[0] == 'g') {
1130 /* TODO: parse -gX with 0<=x<=3... */
1131 set_be_option("debug=frameinfo");
1132 set_be_option("ia32-nooptcc=yes");
1133 } else if (SINGLE_OPTION('c')) {
1134 mode = CompileAssemble;
1135 } else if (SINGLE_OPTION('E')) {
1136 mode = PreprocessOnly;
1137 } else if (SINGLE_OPTION('s')) {
1138 add_flag(&ldflags_obst, "-s");
1139 } else if (SINGLE_OPTION('S')) {
1141 } else if (option[0] == 'O') {
1143 } else if (option[0] == 'I') {
1145 GET_ARG_AFTER(opt, "-I");
1146 add_flag(&cppflags_obst, "-I%s", opt);
1147 } else if (option[0] == 'D') {
1149 GET_ARG_AFTER(opt, "-D");
1150 add_flag(&cppflags_obst, "-D%s", opt);
1151 } else if (option[0] == 'U') {
1153 GET_ARG_AFTER(opt, "-U");
1154 add_flag(&cppflags_obst, "-U%s", opt);
1155 } else if (option[0] == 'l') {
1157 GET_ARG_AFTER(opt, "-l");
1158 add_flag(&ldflags_obst, "-l%s", opt);
1159 } else if (option[0] == 'L') {
1161 GET_ARG_AFTER(opt, "-L");
1162 add_flag(&ldflags_obst, "-L%s", opt);
1163 } else if (SINGLE_OPTION('v')) {
1165 } else if (SINGLE_OPTION('w')) {
1166 add_flag(&cppflags_obst, "-w");
1167 disable_all_warnings();
1168 } else if (option[0] == 'x') {
1170 GET_ARG_AFTER(opt, "-x");
1171 forced_filetype = get_filetype_from_string(opt);
1172 if (forced_filetype == FILETYPE_UNKNOWN) {
1173 fprintf(stderr, "Unknown language '%s'\n", opt);
1174 argument_errors = true;
1176 } else if (streq(option, "M")) {
1177 mode = PreprocessOnly;
1178 add_flag(&cppflags_obst, "-M");
1179 } else if (streq(option, "MMD") ||
1180 streq(option, "MD")) {
1181 construct_dep_target = true;
1182 add_flag(&cppflags_obst, "-%s", option);
1183 } else if (streq(option, "MM") ||
1184 streq(option, "MP")) {
1185 add_flag(&cppflags_obst, "-%s", option);
1186 } else if (streq(option, "MT") ||
1187 streq(option, "MQ") ||
1188 streq(option, "MF")) {
1190 GET_ARG_AFTER(opt, "-MT");
1191 add_flag(&cppflags_obst, "-%s", option);
1192 add_flag(&cppflags_obst, "%s", opt);
1193 } else if (streq(option, "include")) {
1195 GET_ARG_AFTER(opt, "-include");
1196 add_flag(&cppflags_obst, "-include");
1197 add_flag(&cppflags_obst, "%s", opt);
1198 } else if (streq(option, "isystem")) {
1200 GET_ARG_AFTER(opt, "-isystem");
1201 add_flag(&cppflags_obst, "-isystem");
1202 add_flag(&cppflags_obst, "%s", opt);
1203 #if defined(linux) || defined(__linux) || defined(__linux__) || defined(__CYGWIN__)
1204 } else if (streq(option, "pthread")) {
1205 /* set flags for the preprocessor */
1206 add_flag(&cppflags_obst, "-D_REENTRANT");
1207 /* set flags for the linker */
1208 add_flag(&ldflags_obst, "-lpthread");
1210 } else if (streq(option, "nostdinc")
1211 || streq(option, "trigraphs")) {
1212 /* pass these through to the preprocessor */
1213 add_flag(&cppflags_obst, "%s", arg);
1214 } else if (streq(option, "pipe")) {
1215 /* here for gcc compatibility */
1216 } else if (streq(option, "static")) {
1217 add_flag(&ldflags_obst, "-static");
1218 } else if (streq(option, "shared")) {
1219 add_flag(&ldflags_obst, "-shared");
1220 } else if (option[0] == 'f') {
1221 char const *orig_opt;
1222 GET_ARG_AFTER(orig_opt, "-f");
1224 if (strstart(orig_opt, "input-charset=")) {
1225 char const* const encoding = strchr(orig_opt, '=') + 1;
1226 input_encoding = encoding;
1227 } else if (strstart(orig_opt, "align-loops=") ||
1228 strstart(orig_opt, "align-jumps=") ||
1229 strstart(orig_opt, "align-functions=")) {
1230 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1231 } else if (strstart(orig_opt, "visibility=")) {
1232 const char *val = strchr(orig_opt, '=')+1;
1233 elf_visibility_tag_t visibility
1234 = get_elf_visibility_from_string(val);
1235 if (visibility == ELF_VISIBILITY_ERROR) {
1236 fprintf(stderr, "invalid visibility '%s' specified\n",
1238 argument_errors = true;
1240 set_default_visibility(visibility);
1242 } else if (strstart(orig_opt, "message-length=")) {
1243 /* ignore: would only affect error message format */
1244 } else if (streq(orig_opt, "fast-math") ||
1245 streq(orig_opt, "fp-fast")) {
1246 firm_fp_model = fp_model_fast;
1247 } else if (streq(orig_opt, "fp-precise")) {
1248 firm_fp_model = fp_model_precise;
1249 } else if (streq(orig_opt, "fp-strict")) {
1250 firm_fp_model = fp_model_strict;
1251 } else if (streq(orig_opt, "help")) {
1252 fprintf(stderr, "warning: -fhelp is deprecated\n");
1253 help |= HELP_OPTIMIZATION;
1255 /* -f options which have an -fno- variant */
1256 char const *opt = orig_opt;
1257 bool truth_value = true;
1258 if (opt[0] == 'n' && opt[1] == 'o' && opt[2] == '-') {
1259 truth_value = false;
1263 if (streq(opt, "diagnostics-show-option")) {
1264 diagnostics_show_option = truth_value;
1265 } else if (streq(opt, "dollars-in-identifiers")) {
1266 allow_dollar_in_symbol = truth_value;
1267 } else if (streq(opt, "omit-frame-pointer")) {
1268 set_be_option(truth_value ? "omitfp" : "omitfp=no");
1269 } else if (streq(opt, "short-wchar")) {
1270 wchar_atomic_kind = truth_value ? ATOMIC_TYPE_USHORT
1272 } else if (streq(opt, "show-column")) {
1273 show_column = truth_value;
1274 } else if (streq(opt, "signed-char")) {
1275 char_is_signed = truth_value;
1276 } else if (streq(opt, "strength-reduce")) {
1277 /* does nothing, for gcc compatibility (even gcc does
1278 * nothing for this switch anymore) */
1279 } else if (streq(opt, "syntax-only")) {
1280 mode = truth_value ? ParseOnly : CompileAssembleLink;
1281 } else if (streq(opt, "unsigned-char")) {
1282 char_is_signed = !truth_value;
1283 } else if (streq(opt, "freestanding")) {
1284 freestanding = truth_value;
1285 } else if (streq(opt, "hosted")) {
1286 freestanding = !truth_value;
1287 } else if (streq(opt, "profile-generate")) {
1288 profile_generate = truth_value;
1289 } else if (streq(opt, "profile-use")) {
1290 profile_use = truth_value;
1291 } else if (!truth_value &&
1292 streq(opt, "asynchronous-unwind-tables")) {
1293 /* nothing todo, a gcc feature which we do not support
1294 * anyway was deactivated */
1295 } else if (streq(opt, "verbose-asm")) {
1296 /* ignore: we always print verbose assembler */
1297 } else if (streq(opt, "jump-tables") ||
1298 streq(opt, "expensive-optimizations") ||
1299 streq(opt, "common") ||
1300 streq(opt, "optimize-sibling-calls") ||
1301 streq(opt, "align-loops") ||
1302 streq(opt, "align-jumps") ||
1303 streq(opt, "align-functions") ||
1304 streq(opt, "unroll-loops") ||
1305 streq(opt, "PIC") ||
1306 streq(opt, "stack-protector") ||
1307 streq(opt, "stack-protector-all")) {
1308 fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
1310 int res = firm_option(orig_opt);
1312 fprintf(stderr, "error: unknown Firm option '-f%s'\n",
1314 argument_errors = true;
1319 } else if (option[0] == 'b') {
1321 GET_ARG_AFTER(opt, "-b");
1323 if (streq(opt, "help")) {
1324 fprintf(stderr, "warning: -bhelp is deprecated (use --help-firm)\n");
1327 int res = be_parse_arg(opt);
1329 fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
1331 argument_errors = true;
1332 } else if (strstart(opt, "isa=")) {
1333 strncpy(cpu_arch, opt, sizeof(cpu_arch));
1336 } else if (option[0] == 'W') {
1337 if (strstart(option + 1, "p,")) {
1338 // pass options directly to the preprocessor
1340 GET_ARG_AFTER(opt, "-Wp,");
1341 add_flag(&cppflags_obst, "-Wp,%s", opt);
1342 } else if (strstart(option + 1, "l,")) {
1343 // pass options directly to the linker
1345 GET_ARG_AFTER(opt, "-Wl,");
1346 add_flag(&ldflags_obst, "-Wl,%s", opt);
1347 } else if (streq(option + 1, "no-trigraphs")
1348 || streq(option + 1, "undef")
1349 || streq(option + 1, "missing-include-dirs")
1350 || streq(option + 1, "endif-labels")) {
1351 add_flag(&cppflags_obst, "%s", arg);
1352 } else if (streq(option+1, "init-self")) {
1353 /* ignored (same as gcc does) */
1354 } else if (streq(option+1, "format-y2k")
1355 || streq(option+1, "format-security")
1356 || streq(option+1, "old-style-declaration")
1357 || streq(option+1, "type-limits")) {
1358 /* ignore (gcc compatibility) */
1360 set_warning_opt(&option[1]);
1362 } else if (option[0] == 'm') {
1367 GET_ARG_AFTER(opt, "-m");
1368 if (strstart(opt, "target=")) {
1369 GET_ARG_AFTER(opt, "-mtarget=");
1370 if (!parse_target_triple(opt)) {
1371 argument_errors = true;
1373 const char *isa = setup_target_machine();
1374 strncpy(cpu_arch, isa, sizeof(cpu_arch));
1375 target_triple = opt;
1377 } else if (strstart(opt, "triple=")) {
1378 GET_ARG_AFTER(opt, "-mtriple=");
1379 if (!parse_target_triple(opt)) {
1380 argument_errors = true;
1382 const char *isa = setup_target_machine();
1383 strncpy(cpu_arch, isa, sizeof(cpu_arch));
1384 target_triple = opt;
1386 } else if (strstart(opt, "arch=")) {
1387 GET_ARG_AFTER(opt, "-march=");
1388 snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1389 int res = be_parse_arg(arch_opt);
1390 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1391 res &= be_parse_arg(arch_opt);
1394 fprintf(stderr, "Unknown architecture '%s'\n", arch_opt);
1395 argument_errors = true;
1397 } else if (strstart(opt, "tune=")) {
1398 GET_ARG_AFTER(opt, "-mtune=");
1399 snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
1400 int res = be_parse_arg(arch_opt);
1402 argument_errors = true;
1403 } else if (strstart(opt, "cpu=")) {
1404 GET_ARG_AFTER(opt, "-mcpu=");
1405 snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
1406 int res = be_parse_arg(arch_opt);
1408 argument_errors = true;
1409 } else if (strstart(opt, "fpmath=")) {
1410 GET_ARG_AFTER(opt, "-mfpmath=");
1411 if (streq(opt, "387"))
1413 else if (streq(opt, "sse"))
1416 fprintf(stderr, "error: option -mfpmath supports only 387 or sse\n");
1417 argument_errors = true;
1419 if (!argument_errors) {
1420 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
1421 int res = be_parse_arg(arch_opt);
1423 argument_errors = true;
1425 } else if (strstart(opt, "preferred-stack-boundary=")) {
1426 GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
1427 snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
1428 int res = be_parse_arg(arch_opt);
1430 argument_errors = true;
1431 } else if (streq(opt, "rtd")) {
1432 default_calling_convention = CC_STDCALL;
1433 } else if (strstart(opt, "regparm=")) {
1434 fprintf(stderr, "error: regparm convention not supported yet\n");
1435 argument_errors = true;
1436 } else if (streq(opt, "soft-float")) {
1437 add_flag(&ldflags_obst, "-msoft-float");
1438 snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=softfloat", cpu_arch);
1439 int res = be_parse_arg(arch_opt);
1441 argument_errors = true;
1442 } else if (streq(opt, "sse2")) {
1443 /* ignore for now, our x86 backend always uses sse when
1444 * sse is requested */
1446 long int value = strtol(opt, NULL, 10);
1448 fprintf(stderr, "error: wrong option '-m %s'\n", opt);
1449 argument_errors = true;
1450 } else if (value != 16 && value != 32 && value != 64) {
1451 fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
1452 argument_errors = true;
1454 unsigned machine_size = (unsigned)value;
1455 /* TODO: choose/change backend based on this */
1456 add_flag(&cppflags_obst, "-m%u", machine_size);
1457 add_flag(&asflags_obst, "-m%u", machine_size);
1458 add_flag(&ldflags_obst, "-m%u", machine_size);
1461 } else if (streq(option, "pg")) {
1462 set_be_option("gprof");
1463 add_flag(&ldflags_obst, "-pg");
1464 } else if (streq(option, "ansi")) {
1465 standard = STANDARD_ANSI;
1466 } else if (streq(option, "pedantic")) {
1467 fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg);
1468 } else if (strstart(option, "std=")) {
1469 const char *const o = &option[4];
1471 streq(o, "c++") ? STANDARD_CXX98 :
1472 streq(o, "c++98") ? STANDARD_CXX98 :
1473 streq(o, "c89") ? STANDARD_C89 :
1474 streq(o, "c90") ? STANDARD_C89 :
1475 streq(o, "c99") ? STANDARD_C99 :
1476 streq(o, "c9x") ? STANDARD_C99 : // deprecated
1477 streq(o, "gnu++98") ? STANDARD_GNUXX98 :
1478 streq(o, "gnu89") ? STANDARD_GNU89 :
1479 streq(o, "gnu99") ? STANDARD_GNU99 :
1480 streq(o, "gnu9x") ? STANDARD_GNU99 : // deprecated
1481 streq(o, "iso9899:1990") ? STANDARD_C89 :
1482 streq(o, "iso9899:199409") ? STANDARD_C89AMD1 :
1483 streq(o, "iso9899:1999") ? STANDARD_C99 :
1484 streq(o, "iso9899:199x") ? STANDARD_C99 : // deprecated
1485 (fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg), standard);
1486 } else if (streq(option, "version")) {
1487 print_cparser_version();
1488 return EXIT_SUCCESS;
1489 } else if (streq(option, "dumpversion")) {
1490 /* gcc compatibility option */
1491 print_cparser_version_short();
1492 return EXIT_SUCCESS;
1493 } else if (strstart(option, "print-file-name=")) {
1494 GET_ARG_AFTER(print_file_name_file, "-print-file-name=");
1495 } else if (option[0] == '-') {
1496 /* double dash option */
1498 if (streq(option, "gcc")) {
1499 features_on |= _GNUC;
1500 features_off &= ~_GNUC;
1501 } else if (streq(option, "no-gcc")) {
1502 features_on &= ~_GNUC;
1503 features_off |= _GNUC;
1504 } else if (streq(option, "ms")) {
1506 features_off &= ~_MS;
1507 } else if (streq(option, "no-ms")) {
1508 features_on &= ~_MS;
1509 features_off |= _MS;
1510 } else if (streq(option, "strict")) {
1512 } else if (streq(option, "lextest")) {
1514 } else if (streq(option, "benchmark")) {
1515 mode = BenchmarkParser;
1516 } else if (streq(option, "print-ast")) {
1518 } else if (streq(option, "print-implicit-cast")) {
1519 print_implicit_casts = true;
1520 } else if (streq(option, "print-parenthesis")) {
1521 print_parenthesis = true;
1522 } else if (streq(option, "print-fluffy")) {
1524 } else if (streq(option, "print-jna")) {
1526 } else if (streq(option, "jna-limit")) {
1529 fprintf(stderr, "error: "
1530 "expected argument after '--jna-limit'\n");
1531 argument_errors = true;
1534 jna_limit_output(argv[i]);
1535 } else if (streq(option, "jna-libname")) {
1538 fprintf(stderr, "error: "
1539 "expected argument after '--jna-libname'\n");
1540 argument_errors = true;
1543 jna_set_libname(argv[i]);
1544 } else if (streq(option, "time")) {
1546 } else if (streq(option, "version")) {
1547 print_cparser_version();
1548 return EXIT_SUCCESS;
1549 } else if (streq(option, "help")) {
1551 } else if (streq(option, "help-parser")) {
1552 help |= HELP_PARSER;
1553 } else if (streq(option, "help-warnings")) {
1554 help |= HELP_WARNINGS;
1555 } else if (streq(option, "help-codegen")) {
1556 help |= HELP_CODEGEN;
1557 } else if (streq(option, "help-linker")) {
1558 help |= HELP_LINKER;
1559 } else if (streq(option, "help-optimization")) {
1560 help |= HELP_OPTIMIZATION;
1561 } else if (streq(option, "help-language-tools")) {
1562 help |= HELP_LANGUAGETOOLS;
1563 } else if (streq(option, "help-debug")) {
1565 } else if (streq(option, "help-firm")) {
1567 } else if (streq(option, "help-all")) {
1569 } else if (streq(option, "dump-function")) {
1572 fprintf(stderr, "error: "
1573 "expected argument after '--dump-function'\n");
1574 argument_errors = true;
1577 dumpfunction = argv[i];
1579 } else if (streq(option, "export-ir")) {
1580 mode = CompileExportIR;
1581 } else if (streq(option, "unroll-loops")) {
1582 /* ignore (gcc compatibility) */
1584 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1585 argument_errors = true;
1588 fprintf(stderr, "error: unknown argument '%s'\n", arg);
1589 argument_errors = true;
1592 filetype_t type = forced_filetype;
1593 if (type == FILETYPE_AUTODETECT) {
1594 if (streq(arg, "-")) {
1595 /* - implicitly means C source file */
1598 const char *suffix = strrchr(arg, '.');
1599 /* Ensure there is at least one char before the suffix */
1600 if (suffix != NULL && suffix != arg) {
1603 streq(suffix, "S") ? FILETYPE_ASSEMBLER :
1604 streq(suffix, "a") ? FILETYPE_OBJECT :
1605 streq(suffix, "c") ? FILETYPE_C :
1606 streq(suffix, "i") ? FILETYPE_PREPROCESSED_C :
1607 streq(suffix, "C") ? FILETYPE_CXX :
1608 streq(suffix, "cc") ? FILETYPE_CXX :
1609 streq(suffix, "cp") ? FILETYPE_CXX :
1610 streq(suffix, "cpp") ? FILETYPE_CXX :
1611 streq(suffix, "CPP") ? FILETYPE_CXX :
1612 streq(suffix, "cxx") ? FILETYPE_CXX :
1613 streq(suffix, "c++") ? FILETYPE_CXX :
1614 streq(suffix, "ii") ? FILETYPE_PREPROCESSED_CXX :
1615 streq(suffix, "h") ? FILETYPE_C :
1616 streq(suffix, "ir") ? FILETYPE_IR :
1617 streq(suffix, "o") ? FILETYPE_OBJECT :
1618 streq(suffix, "s") ? FILETYPE_PREPROCESSED_ASSEMBLER :
1619 streq(suffix, "so") ? FILETYPE_OBJECT :
1620 FILETYPE_OBJECT; /* gcc behavior: unknown file extension means object file */
1625 file_list_entry_t *entry
1626 = obstack_alloc(&file_obst, sizeof(entry[0]));
1627 memset(entry, 0, sizeof(entry[0]));
1631 if (last_file != NULL) {
1632 last_file->next = entry;
1640 if (help != HELP_NONE) {
1641 print_help(argv[0], help);
1642 return !argument_errors;
1645 if (print_file_name_file != NULL) {
1646 print_file_name(print_file_name_file);
1647 return EXIT_SUCCESS;
1649 if (files == NULL) {
1650 fprintf(stderr, "error: no input files specified\n");
1651 argument_errors = true;
1654 if (argument_errors) {
1656 return EXIT_FAILURE;
1659 /* apply some effects from switches */
1660 c_mode |= features_on;
1661 c_mode &= ~features_off;
1662 if (profile_generate) {
1663 add_flag(&ldflags_obst, "-lfirmprof");
1664 set_be_option("profilegenerate");
1667 set_be_option("profileuse");
1670 init_symbol_table();
1671 init_types_and_adjust();
1674 if (wchar_atomic_kind == ATOMIC_TYPE_INT)
1675 init_wchar_types(type_int);
1676 else if (wchar_atomic_kind == ATOMIC_TYPE_USHORT)
1677 init_wchar_types(type_short);
1679 panic("unexpected wchar type");
1680 init_preprocessor();
1689 if (construct_dep_target) {
1690 if (outname != 0 && strlen(outname) >= 2) {
1691 get_output_name(dep_target, sizeof(dep_target), outname, ".d");
1693 get_output_name(dep_target, sizeof(dep_target), files->name, ".d");
1696 dep_target[0] = '\0';
1699 char outnamebuf[4096];
1700 if (outname == NULL) {
1701 const char *filename = files->name;
1704 case BenchmarkParser:
1709 case PreprocessOnly:
1714 get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".s");
1715 outname = outnamebuf;
1717 case CompileAssemble:
1718 get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".o");
1719 outname = outnamebuf;
1722 get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction,
1724 outname = outnamebuf;
1726 case CompileExportIR:
1727 get_output_name(outnamebuf, sizeof(outnamebuf), filename, ".ir");
1728 outname = outnamebuf;
1730 case CompileAssembleLink:
1740 assert(outname != NULL);
1743 if (streq(outname, "-")) {
1746 out = fopen(outname, "w");
1748 fprintf(stderr, "Could not open '%s' for writing: %s\n", outname,
1750 return EXIT_FAILURE;
1754 file_list_entry_t *file;
1755 bool already_constructed_firm = false;
1756 for (file = files; file != NULL; file = file->next) {
1757 char asm_tempfile[1024];
1758 const char *filename = file->name;
1759 filetype_t filetype = file->type;
1760 lang_standard_t file_standard = standard;
1762 if (filetype == FILETYPE_OBJECT)
1764 switch (file_standard) {
1768 case FILETYPE_PREPROCESSED_C: file_standard = STANDARD_C89; break;
1770 case FILETYPE_PREPROCESSED_CXX: file_standard = STANDARD_CXX98; break;
1775 case STANDARD_DEFAULT:
1778 case FILETYPE_PREPROCESSED_C: file_standard = STANDARD_GNU99; break;
1780 case FILETYPE_PREPROCESSED_CXX: file_standard = STANDARD_GNUXX98; break;
1789 if (mode == LexTest) {
1791 in = open_file(filename);
1792 lextest(in, filename);
1794 return EXIT_SUCCESS;
1797 FILE *preprocessed_in = NULL;
1798 filetype_t next_filetype = filetype;
1801 next_filetype = FILETYPE_PREPROCESSED_C;
1804 next_filetype = FILETYPE_PREPROCESSED_CXX;
1806 case FILETYPE_ASSEMBLER:
1807 next_filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
1810 /* no support for input on FILE* yet */
1812 panic("internal compiler error: in for preprocessor != NULL");
1814 preprocessed_in = preprocess(filename, filetype,
1816 if (mode == PreprocessOnly) {
1817 copy_file(out, preprocessed_in);
1818 int pp_result = pclose(preprocessed_in);
1820 /* remove output file in case of error */
1821 if (out != stdout && pp_result != EXIT_SUCCESS) {
1827 in = preprocessed_in;
1828 filetype = next_filetype;
1836 if (mode == Compile) {
1839 asm_out = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "ccs");
1843 in = open_file(filename);
1845 /* preprocess and compile */
1846 if (filetype == FILETYPE_PREPROCESSED_C) {
1847 switch (file_standard) {
1848 case STANDARD_C89: c_mode = _C89; break;
1849 /* TODO determine difference between these two */
1850 case STANDARD_C89AMD1: c_mode = _C89; break;
1851 case STANDARD_C99: c_mode = _C89 | _C99; break;
1852 case STANDARD_GNU89: c_mode = _C89 | _GNUC; break;
1855 case STANDARD_CXX98:
1856 case STANDARD_GNUXX98:
1857 case STANDARD_DEFAULT:
1858 fprintf(stderr, "warning: command line option \"-std=%s\" is not valid for C\n", str_lang_standard(file_standard));
1860 case STANDARD_GNU99: c_mode = _C89 | _C99 | _GNUC; break;
1863 } else if (filetype == FILETYPE_PREPROCESSED_CXX) {
1864 switch (file_standard) {
1865 case STANDARD_CXX98: c_mode = _CXX; break;
1869 case STANDARD_C89AMD1:
1871 case STANDARD_GNU89:
1872 case STANDARD_GNU99:
1873 case STANDARD_DEFAULT:
1874 fprintf(stderr, "warning: command line option \"-std=%s\" is not valid for C++\n", str_lang_standard(file_standard));
1876 case STANDARD_GNUXX98: c_mode = _CXX | _GNUC; break;
1880 c_mode |= features_on;
1881 c_mode &= ~features_off;
1883 /* do the actual parsing */
1884 ir_timer_t *t_parsing = ir_timer_new();
1885 timer_register(t_parsing, "Frontend: Parsing");
1886 timer_push(t_parsing);
1888 translation_unit_t *const unit = do_parsing(in, filename);
1889 timer_pop(t_parsing);
1891 /* prints the AST even if errors occurred */
1892 if (mode == PrintAst) {
1897 if (error_count > 0) {
1898 /* parsing failed because of errors */
1899 fprintf(stderr, "%u error(s), %u warning(s)\n", error_count,
1901 result = EXIT_FAILURE;
1903 } else if (warning_count > 0) {
1904 fprintf(stderr, "%u warning(s)\n", warning_count);
1907 if (in == preprocessed_in) {
1908 int pp_result = pclose(preprocessed_in);
1909 if (pp_result != EXIT_SUCCESS) {
1910 /* remove output file */
1913 return EXIT_FAILURE;
1917 if (mode == BenchmarkParser) {
1919 } else if (mode == PrintFluffy) {
1920 write_fluffy_decls(out, unit);
1922 } else if (mode == PrintJna) {
1923 write_jna_decls(out, unit);
1927 /* build the firm graph */
1928 ir_timer_t *t_construct = ir_timer_new();
1929 timer_register(t_construct, "Frontend: Graph construction");
1930 timer_push(t_construct);
1931 if (already_constructed_firm) {
1932 panic("compiling multiple files/translation units not possible");
1934 init_implicit_optimizations();
1935 translation_unit_to_firm(unit);
1936 already_constructed_firm = true;
1937 timer_pop(t_construct);
1940 if (mode == ParseOnly) {
1944 if (mode == CompileDump) {
1946 ident *id = new_id_from_str(dumpfunction);
1947 ir_graph *irg = NULL;
1948 int n_irgs = get_irp_n_irgs();
1949 for (int i = 0; i < n_irgs; ++i) {
1950 ir_graph *tirg = get_irp_irg(i);
1951 ident *irg_id = get_entity_ident(get_irg_entity(tirg));
1959 fprintf(stderr, "No graph for function '%s' found\n",
1961 return EXIT_FAILURE;
1964 dump_ir_graph_file(out, irg);
1966 return EXIT_SUCCESS;
1969 if (mode == CompileExportIR) {
1970 ir_export_file(out);
1971 if (ferror(out) != 0) {
1972 fprintf(stderr, "Error while writing to output\n");
1973 return EXIT_FAILURE;
1975 return EXIT_SUCCESS;
1978 generate_code(asm_out, filename);
1979 if (asm_out != out) {
1982 } else if (filetype == FILETYPE_IR) {
1984 int res = ir_import(filename);
1986 fprintf(stderr, "Firm-Program import failed\n");
1987 return EXIT_FAILURE;
1990 } else if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
1991 copy_file(asm_out, in);
1992 if (in == preprocessed_in) {
1993 int pp_result = pclose(preprocessed_in);
1994 if (pp_result != EXIT_SUCCESS) {
1995 /* remove output in error case */
2001 if (asm_out != out) {
2006 if (mode == Compile)
2009 /* if we're here then we have preprocessed assembly */
2010 filename = asm_tempfile;
2011 filetype = FILETYPE_PREPROCESSED_ASSEMBLER;
2014 if (filetype == FILETYPE_PREPROCESSED_ASSEMBLER) {
2016 const char *filename_o;
2017 if (mode == CompileAssemble) {
2019 filename_o = outname;
2021 FILE *tempf = make_temp_file(temp, sizeof(temp), "cco");
2026 assemble(filename_o, filename);
2028 size_t len = strlen(filename_o) + 1;
2029 filename = obstack_copy(&file_obst, filename_o, len);
2030 filetype = FILETYPE_OBJECT;
2033 /* ok we're done here, process next file */
2034 file->name = filename;
2035 file->type = filetype;
2038 if (result != EXIT_SUCCESS) {
2044 /* link program file */
2045 if (mode == CompileAssembleLink) {
2046 obstack_1grow(&ldflags_obst, '\0');
2047 const char *flags = obstack_finish(&ldflags_obst);
2049 /* construct commandline */
2050 const char *linker = getenv("CPARSER_LINK");
2051 if (linker != NULL) {
2052 obstack_printf(&file_obst, "%s ", linker);
2054 if (target_triple != NULL)
2055 obstack_printf(&file_obst, "%s-", target_triple);
2056 obstack_printf(&file_obst, "%s ", LINKER);
2059 for (file_list_entry_t *entry = files; entry != NULL;
2060 entry = entry->next) {
2061 if (entry->type != FILETYPE_OBJECT)
2064 add_flag(&file_obst, "%s", entry->name);
2067 add_flag(&file_obst, "-o");
2068 add_flag(&file_obst, outname);
2069 obstack_printf(&file_obst, "%s", flags);
2070 obstack_1grow(&file_obst, '\0');
2072 char *commandline = obstack_finish(&file_obst);
2077 int err = system(commandline);
2078 if (err != EXIT_SUCCESS) {
2079 fprintf(stderr, "linker reported an error\n");
2080 return EXIT_FAILURE;
2087 obstack_free(&cppflags_obst, NULL);
2088 obstack_free(&ldflags_obst, NULL);
2089 obstack_free(&asflags_obst, NULL);
2090 obstack_free(&file_obst, NULL);
2097 exit_preprocessor();
2101 exit_symbol_table();
2102 return EXIT_SUCCESS;