X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=main.c;h=84b2b5fa3ff949c92c28c4a521d46b052941faf6;hb=fd16b92f058181088a385c3224c8814831c006d3;hp=09723ca9b48222c00e155f613b151edf80b1cfc2;hpb=9749dae0f4dbf98e4fca126b97919fd8f33d9652;p=cparser diff --git a/main.c b/main.c index 09723ca..84b2b5f 100644 --- a/main.c +++ b/main.c @@ -1,22 +1,153 @@ +/* + * This file is part of cparser. + * Copyright (C) 2007-2008 Matthias Braun + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ #include -#include +#define _GNU_SOURCE + #include +#include +#include #include #include +#include + +#ifdef _WIN32 + +#include +#include + +/* no eXecute on Win32 */ +#define X_OK 0 +#define W_OK 2 +#define R_OK 4 + +#define O_RDWR _O_RDWR +#define O_CREAT _O_CREAT +#define O_EXCL _O_EXCL +#define O_BINARY _O_BINARY + +/* remap some names, we are not in the POSIX world */ +#define access(fname, mode) _access(fname, mode) +#define mktemp(tmpl) _mktemp(tmpl) +#define open(fname, oflag, mode) _open(fname, oflag, mode) +#define fdopen(fd, mode) _fdopen(fd, mode) +#define popen(cmd, mode) _popen(cmd, mode) +#define pclose(file) _pclose(file) + +#else +#include +#define HAVE_MKSTEMP +#endif + +#ifndef WITH_LIBCORE +#define WITH_LIBCORE +#endif + +#include +#include #include "lexer.h" #include "token_t.h" +#include "types.h" #include "type_hash.h" #include "parser.h" +#include "ast2firm.h" +#include "diagnostic.h" +#include "lang_features.h" +#include "driver/firm_opt.h" +#include "driver/firm_cmdline.h" +#include "adt/error.h" +#include "write_fluffy.h" +#include "revision.h" +#include "warning.h" + +#ifndef PREPROCESSOR +#define PREPROCESSOR "cpp -std=c99 -U__WCHAR_TYPE__ -D__WCHAR_TYPE__=int" +#endif + +#ifndef LINKER +#define LINKER "gcc -m32" +#endif + +#ifndef ASSEMBLER +#define ASSEMBLER "as --32" +#endif + +/** The current c mode/dialect. */ +unsigned int c_mode = _C89|_C99|_GNUC; + +/** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */ +unsigned int machine_size = 32; -#if 0 -static -void get_output_name(char *buf, size_t buflen, const char *inputname, - const char *newext) +/** true if the char type is signed. */ +bool char_is_signed = true; + +/** true for strict language checking. */ +bool strict_mode = false; + +/* to switch on printing of implicit casts */ +extern bool print_implicit_casts; + +/* to switch on printing of srenthesis to indicate operator precedence */ +extern bool print_parenthesis; + +static int verbose; +static struct obstack cppflags_obst, ldflags_obst; + +#if defined(_DEBUG) || defined(FIRM_DEBUG) +/** + * Debug printf implementation. + * + * @param fmt printf style format parameter + */ +void dbg_printf(const char *fmt, ...) +{ + va_list list; + + if (firm_dump.debug_print) { + va_start(list, fmt); + vprintf(fmt, list); + va_end(list); + } /* if */ +} +#endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */ + +static void initialize_firm(void) +{ + firm_early_init(); + + dump_consts_local(1); + dump_keepalive_edges(1); +} + +static void get_output_name(char *buf, size_t buflen, const char *inputname, + const char *newext) { size_t last_dot = 0xffffffff; size_t i = 0; + + if(inputname == NULL) { + snprintf(buf, buflen, "a%s", newext); + return; + } + for(const char *c = inputname; *c != 0; ++c) { if(*c == '.') last_dot = i; @@ -34,73 +165,632 @@ void get_output_name(char *buf, size_t buflen, const char *inputname, panic("filename too long"); memcpy(buf+last_dot, newext, extlen); } -#endif -static -translation_unit_t *compile(const char *fname) +static translation_unit_t *do_parsing(FILE *const in, const char *const input) { - FILE *in = fopen(fname, "r"); - if(in == NULL) { - fprintf(stderr, "Couldn't open '%s': %s\n", fname, strerror(errno)); + lexer_open_stream(in, input); + translation_unit_t *unit = parse(); + return unit; +} + +static void lextest(FILE *in, const char *fname) +{ + lexer_open_stream(in, fname); + + do { + lexer_next_preprocessing_token(); + print_token(stdout, &lexer_token); + puts(""); + } while(lexer_token.type != T_EOF); +} + +static FILE* preprocess(FILE* in, const char *fname) +{ + char buf[4096]; + obstack_1grow(&cppflags_obst, '\0'); + const char *flags = obstack_finish(&cppflags_obst); + + if(in != stdin) { + snprintf(buf, sizeof(buf), PREPROCESSOR " %s %s", flags, fname); + } else { + /* read from stdin */ + snprintf(buf, sizeof(buf), PREPROCESSOR " %s -", flags); + } + + if(verbose) { + puts(buf); + } + FILE* f = popen(buf, "r"); + if (f == NULL) { + fprintf(stderr, "invoking preprocessor failed\n"); exit(1); } + return f; +} - lexer_open_stream(in, fname); +static void do_link(const char *out, const char *in) +{ + char buf[4096]; + obstack_1grow(&ldflags_obst, '\0'); + const char *flags = obstack_finish(&ldflags_obst); - translation_unit_t *unit = parse(); + snprintf(buf, sizeof(buf), LINKER " %s -o %s %s", flags, out, in); + if(verbose) { + puts(buf); + } + int err = system(buf); + if(err != 0) { + fprintf(stderr, "linker reported an error\n"); + exit(1); + } +} + +static void assemble(const char *out, const char *in) +{ + char buf[4096]; - fclose(in); + snprintf(buf, sizeof(buf), "%s %s -o %s", ASSEMBLER, in, out); + if(verbose) { + puts(buf); + } - return unit; + int err = system(buf); + if(err != 0) { + fprintf(stderr, "assembler reported an error\n"); + exit(1); + } +} + +static const char *try_dir(const char *dir) +{ + if(dir == NULL) + return dir; + if(access(dir, R_OK | W_OK | X_OK) == 0) + return dir; + return NULL; +} + +static const char *get_tempdir(void) +{ + static const char *tmpdir = NULL; + + if(tmpdir != NULL) + return tmpdir; + + if(tmpdir == NULL) + tmpdir = try_dir(getenv("TMPDIR")); + if(tmpdir == NULL) + tmpdir = try_dir(getenv("TMP")); + if(tmpdir == NULL) + tmpdir = try_dir(getenv("TEMP")); + +#ifdef P_tmpdir + if(tmpdir == NULL) + tmpdir = try_dir(P_tmpdir); +#endif + + if(tmpdir == NULL) + tmpdir = try_dir("/var/tmp"); + if(tmpdir == NULL) + tmpdir = try_dir("/usr/tmp"); + if(tmpdir == NULL) + tmpdir = try_dir("/tmp"); + + if(tmpdir == NULL) + tmpdir = "."; + + return tmpdir; } -static -void lextest(const char *fname) +#ifndef HAVE_MKSTEMP +/* cheap and nasty mkstemp replacement */ +static int mkstemp(char *templ) { - FILE *in = fopen(fname, "r"); - if(in == NULL) { - fprintf(stderr, "Couldn't open '%s': %s\n", fname, strerror(errno)); + mktemp(templ); + return open(templ, O_RDWR|O_CREAT|O_EXCL|O_BINARY, 0600); +} +#endif + +/** + * an own version of tmpnam, which: writes in a buffer, appends a user specified + * suffix, emits no warnings during linking (like glibc/gnu ld do for tmpnam)... + */ +static FILE *make_temp_file(char *buffer, size_t buflen, + const char *prefix, const char *suffix) +{ + const char *tempdir = get_tempdir(); + + /* oh well... mkstemp doesn't accept a suffix after XXXXXX... */ + (void) suffix; + suffix = ""; + + snprintf(buffer, buflen, "%s/%sXXXXXX%s", tempdir, prefix, suffix); + + int fd = mkstemp(buffer); + if(fd == -1) { + fprintf(stderr, "couldn't create temporary file: %s\n", + strerror(errno)); + exit(1); + } + FILE *out = fdopen(fd, "w"); + if(out == NULL) { + fprintf(stderr, "couldn't create temporary file FILE*\n"); exit(1); } - lexer_open_stream(in, fname); + return out; +} - do { - lexer_next_preprocessing_token(); - print_token(stdout, &lexer_token); - puts(""); - } while(lexer_token.type != T_EOF); +/** + * Do the necessary lowering for compound parameters. + */ +void lower_compound_params(void) +{ + lower_params_t params; - fclose(in); + params.def_ptr_alignment = 4; + params.flags = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN; + params.hidden_params = ADD_HIDDEN_ALWAYS_IN_FRONT; + params.find_pointer_type = NULL; + params.ret_compound_in_regs = NULL; + lower_calls_with_compounds(¶ms); } -void write_fluffy_decls(translation_unit_t *unit); +typedef enum compile_mode_t { + BenchmarkParser, + ParseOnly, + Compile, + CompileDump, + CompileAssemble, + CompileAssembleLink, + LexTest, + PrintAst, + PrintFluffy +} compile_mode_t; + +static void usage(const char *argv0) +{ + fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0); +} int main(int argc, char **argv) { + initialize_firm(); + + const char *input = NULL; + const char *outname = NULL; + const char *dumpfunction = NULL; + compile_mode_t mode = CompileAssembleLink; + int opt_level = 1; + + obstack_init(&cppflags_obst); + obstack_init(&ldflags_obst); + +#define GET_ARG_AFTER(def, args) \ + def = &arg[sizeof(args)-1]; \ + if(def[0] == '\0') { \ + ++i; \ + if(i >= argc) { \ + fprintf(stderr, "error: expected argument after '" args "'\n"); \ + argument_errors = true; \ + break; \ + } \ + def = argv[i]; \ + if(def[0] == '-' && def[1] != '\0') { \ + fprintf(stderr, "error: expected argument after '" args "'\n"); \ + argument_errors = true; \ + continue; \ + } \ + } + +#define SINGLE_OPTION(ch) (option[0] == (ch) && option[1] == '\0') + + /* early options parsing (find out optimisation level) */ + for(int i = 1; i < argc; ++i) { + const char *arg = argv[i]; + if(arg[0] != '-') + continue; + + const char *option = &arg[1]; + if(option[0] == 'O') { + sscanf(&option[1], "%d", &opt_level); + } + } + + /* apply optimisation level */ + switch(opt_level) { + case 0: + firm_option("no-opt"); + break; + case 1: + firm_option("no-inline"); + break; + default: + case 4: + firm_option("strict-aliasing"); + /* fallthrough */ + case 3: + firm_option("cond-eval"); + firm_option("if-conv"); + /* fallthrough */ + case 2: + firm_option("inline"); + firm_option("no-strength-red"); + firm_option("deconv"); + firm_be_option("omitfp"); + break; + } + + /* parse rest of options */ + bool help_displayed = false; + bool argument_errors = false; + for(int i = 1; i < argc; ++i) { + const char *arg = argv[i]; + if(arg[0] == '-') { + /* an option */ + const char *option = &arg[1]; + if(option[0] == 'o') { + GET_ARG_AFTER(outname, "-o"); + } else if(option[0] == 'g') { + firm_be_option("stabs=yes"); + firm_be_option("omitfp=no"); + firm_be_option("ia32-nooptcc=yes"); + } else if(SINGLE_OPTION('c')) { + mode = CompileAssemble; + } else if(SINGLE_OPTION('S')) { + mode = Compile; + } else if(option[0] == 'O') { + continue; + } else if(option[0] == 'I') { + const char *opt; + GET_ARG_AFTER(opt, "-I"); + obstack_printf(&cppflags_obst, " -I%s", opt); + } else if(option[0] == 'D') { + const char *opt; + GET_ARG_AFTER(opt, "-D"); + obstack_printf(&cppflags_obst, " -D%s", opt); + } else if(option[0] == 'U') { + const char *opt; + GET_ARG_AFTER(opt, "-U"); + obstack_printf(&cppflags_obst, " -U%s", opt); + } else if(option[0] == 'l') { + const char *opt; + GET_ARG_AFTER(opt, "-l"); + obstack_printf(&ldflags_obst, " -l%s", opt); + } else if(option[0] == 'L') { + const char *opt; + GET_ARG_AFTER(opt, "-L"); + obstack_printf(&ldflags_obst, " -L%s", opt); + } else if(SINGLE_OPTION('v')) { + verbose = 1; + } else if(SINGLE_OPTION('w')) { + inhibit_all_warnings = true; + } else if(option[0] == 'f') { + const char *opt; + GET_ARG_AFTER(opt, "-f"); + + if(strcmp(opt, "syntax-only") == 0) { + mode = ParseOnly; + } else if(strcmp(opt, "omit-frame-pointer") == 0) { + firm_be_option("omitfp"); + } else if(strcmp(opt, "no-omit-frame-pointer") == 0) { + firm_be_option("omitfp=no"); + } else { + int res = firm_option(opt); + if (res == 0) { + fprintf(stderr, "error: unknown Firm option '-f %s'\n", + opt); + argument_errors = true; + continue; + } else if (res == -1) { + help_displayed = true; + } + } + } else if(option[0] == 'b') { + const char *opt; + GET_ARG_AFTER(opt, "-b"); + int res = firm_be_option(opt); + if (res == 0) { + fprintf(stderr, "error: unknown Firm backend option '-b %s'\n", + opt); + argument_errors = true; + } else if (res == -1) { + help_displayed = true; + } + } else if(option[0] == 'W') { + set_warning_opt(&option[1]); + } else if(option[0] == 'm') { + const char *opt; + GET_ARG_AFTER(opt, "-m"); + char *endptr; + long int value = strtol(opt, &endptr, 10); + if (*endptr != '\0') { + fprintf(stderr, "error: wrong option '-m %s'\n", opt); + argument_errors = true; + } + if (value != 16 && value != 32 && value != 64) { + fprintf(stderr, "error: option -m supports only 16, 32 or 64\n"); + argument_errors = true; + } else { + machine_size = (unsigned int)value; + } + } else if (option[0] == '\0') { + if(input != NULL) { + fprintf(stderr, "error: multiple input files specified\n"); + argument_errors = true; + } else { + input = arg; + } + } else if(strcmp(option, "pedantic") == 0) { + fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg); + } else if(strncmp(option, "std=", 4) == 0) { + fprintf(stderr, "warning: ignoring gcc option '%s'\n", arg); + } else if (option[0] == '-') { + /* double dash option */ + ++option; + if(strcmp(option, "gcc") == 0) { + c_mode |= _GNUC; + } else if(strcmp(option, "no-gcc") == 0) { + c_mode &= ~_GNUC; + } else if(strcmp(option, "ms") == 0) { + c_mode |= _MS; + } else if(strcmp(option, "no-ms") == 0) { + c_mode &= ~_MS; + } else if(strcmp(option, "signed-chars") == 0) { + char_is_signed = true; + } else if(strcmp(option, "unsigned-chars") == 0) { + char_is_signed = false; + } else if(strcmp(option, "strict") == 0) { + strict_mode = true; + } else if(strcmp(option, "lextest") == 0) { + mode = LexTest; + } else if(strcmp(option, "benchmark") == 0) { + mode = BenchmarkParser; + } else if(strcmp(option, "print-ast") == 0) { + mode = PrintAst; + } else if(strcmp(option, "print-implicit-cast") == 0) { + print_implicit_casts = true; + } else if(strcmp(option, "print-parenthesis") == 0) { + print_parenthesis = true; + } else if(strcmp(option, "print-fluffy") == 0) { + mode = PrintFluffy; + } else if(strcmp(option, "version") == 0) { + firm_version_t ver; + firm_get_version(&ver); + printf("cparser (%d.%d %s) using libFirm (%u.%u", 0, 1, cparser_REVISION, ver.major, ver.minor); + if(ver.revision[0] != 0) { + putchar(' '); + fputs(ver.revision, stdout); + } + if(ver.build[0] != 0) { + putchar(' '); + fputs(ver.build, stdout); + } + puts(")\n"); + exit(EXIT_SUCCESS); + } else if(strcmp(option, "dump-function") == 0) { + ++i; + if(i >= argc) { + fprintf(stderr, "error: " + "expected argument after '--dump-function'\n"); + argument_errors = true; + break; + } + dumpfunction = argv[i]; + mode = CompileDump; + } else { + fprintf(stderr, "error: unknown argument '%s'\n", arg); + argument_errors = true; + } + } else { + fprintf(stderr, "error: unknown argument '%s'\n", arg); + argument_errors = true; + } + } else { + if(input != NULL) { + fprintf(stderr, "error: multiple input files specified\n"); + argument_errors = true; + } else { + input = arg; + } + } + } + + /* we do the lowering in ast2firm */ + firm_opt.lower_bitfields = FALSE; + + if(help_displayed) { + return !argument_errors; + } + if(argument_errors) { + usage(argv[0]); + return 1; + } + + gen_firm_init(); init_symbol_table(); init_tokens(); - init_lexer(); init_types(); init_typehash(); + init_basic_types(); + init_lexer(); init_ast(); init_parser(); + init_ast2firm(); + + FILE *out = NULL; + char outnamebuf[4096]; + if(outname == NULL) { + switch(mode) { + case BenchmarkParser: + case PrintAst: + case PrintFluffy: + case LexTest: + if(outname == NULL) + outname = "-"; + break; + case ParseOnly: + break; + case Compile: + get_output_name(outnamebuf, sizeof(outnamebuf), input, ".s"); + outname = outnamebuf; + break; + case CompileAssemble: + get_output_name(outnamebuf, sizeof(outnamebuf), input, ".o"); + outname = outnamebuf; + break; + case CompileDump: + get_output_name(outnamebuf, sizeof(outnamebuf), dumpfunction, + ".vcg"); + outname = outnamebuf; + break; + case CompileAssembleLink: + outname = "a.out"; + break; + } + } + + if(outname != NULL) { + if(strcmp(outname, "-") == 0) { + out = stdout; + } else { + out = fopen(outname, "w"); + if(out == NULL) { + fprintf(stderr, "Couldn't open '%s' for writing: %s\n", outname, + strerror(errno)); + return 1; + } + } + } + + FILE *in; + if(input == NULL) { + fprintf(stderr, "%s: no input files\n", argv[0]); + return 1; + } else if(strcmp(input, "-") == 0) { + in = stdin; + input = ""; + } else { + in = fopen(input, "r"); + if(in == NULL) { + fprintf(stderr, "Couldn't open '%s': %s\n", input, strerror(errno)); + return 1; + } + } - if(argc > 2 && strcmp(argv[1], "--lextest") == 0) { - lextest(argv[2]); + if(mode == LexTest) { + lextest(in, input); + fclose(in); return 0; } - for(int i = 1; i < argc; ++i) { - translation_unit_t *unit = compile(argv[i]); - write_fluffy_decls(unit); + FILE *preprocessed_in = preprocess(in, input); + translation_unit_t *const unit = do_parsing(preprocessed_in, input); + int result = pclose(preprocessed_in); + if(result != 0) { + return result; + } + if(unit == NULL) { + /* parsing failed because of errors */ + fprintf(stderr, "%u error(s), %u warning(s)\n", error_count, warning_count); + return EXIT_FAILURE; + } + if (warning_count > 0) { + fprintf(stderr, "%u warning(s)\n", warning_count); + } + + if(mode == BenchmarkParser) { + return 0; + } + + if(mode == PrintAst) { + type_set_output(out); + ast_set_output(out); + print_ast(unit); + return 0; + } + if(mode == PrintFluffy) { + type_set_output(out); + ast_set_output(out); + write_fluffy_decls(out, unit); } + translation_unit_to_firm(unit); + + if(mode == ParseOnly) { + return 0; + } + + FILE *asm_out; + char asm_tempfile[1024]; + if(mode == CompileDump) { + asm_out = NULL; + firm_be_opt.selection = BE_NONE; + } else if(mode == Compile) { + asm_out = out; + } else { + asm_out + = make_temp_file(asm_tempfile, sizeof(asm_tempfile), "cc", ".s"); + } + gen_firm_finish(asm_out, input, /*c_mode=*/1, /*firm_const_exists=*/0); + + if(mode == CompileDump) { + /* find irg */ + ident *id = new_id_from_str(dumpfunction); + ir_graph *irg = NULL; + int n_irgs = get_irp_n_irgs(); + for(int i = 0; i < n_irgs; ++i) { + ir_graph *tirg = get_irp_irg(i); + ident *irg_id = get_entity_ident(get_irg_entity(tirg)); + if(irg_id == id) { + irg = tirg; + break; + } + } + + if(irg == NULL) { + fprintf(stderr, "No graph for function '%s' found\n", dumpfunction); + return 1; + } + + dump_ir_block_graph_file(irg, out); + fclose(out); + return 0; + } + + fclose(asm_out); + + /* assemble assembler and create object file */ + char obj_tfile[1024]; + if(mode == CompileAssemble || mode == CompileAssembleLink) { + const char *obj_outfile; + if(mode == CompileAssemble) { + fclose(out); + obj_outfile = outname; + } else { + FILE *tempf + = make_temp_file(obj_tfile, sizeof(obj_tfile), "cc", ".o"); + fclose(tempf); + obj_outfile = obj_tfile; + } + + assemble(obj_outfile, asm_tempfile); + } + + /* link object file */ + if(mode == CompileAssembleLink) { + do_link(outname, obj_tfile); + } + + obstack_free(&cppflags_obst, NULL); + obstack_free(&ldflags_obst, NULL); + + exit_ast2firm(); exit_parser(); exit_ast(); + exit_lexer(); exit_typehash(); exit_types(); - exit_lexer(); exit_tokens(); exit_symbol_table(); return 0;