X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=main.c;h=a529a0364ea6b3dc2f5466628f639d3c47d1bdec;hb=f017f4f5080052f95185056b3af472ab737bc64a;hp=34ee11b45f2c370343a1ffea02423946431cdd1f;hpb=853c9303530a0f2e68ac923538765f15efea6a90;p=cparser diff --git a/main.c b/main.c index 34ee11b..a529a03 100644 --- a/main.c +++ b/main.c @@ -7,9 +7,36 @@ #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 @@ -19,88 +46,76 @@ #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" +#define LINKER "gcc -m32" #endif #ifndef ASSEMBLER -#define ASSEMBLER "as" +#define ASSEMBLER "as --32" #endif -#ifdef _WIN32 -/* remap some names */ -#define popen(cmd, mode) _popen(cmd, mode) -#define pclose(file) _pclose(file) -#endif /* _WIN32 */ +/** The current c mode/dialect. */ +unsigned int c_mode = _C89|_C99|_GNUC; -static int verbose; -static bool do_dump; +/** The 'machine size', 16, 32 or 64 bit, 32bit is the default. */ +unsigned int machine_size = 32; -static const ir_settings_if_conv_t *if_conv_info = NULL; -static const backend_params *be_params = NULL; +/** true if the char type is signed. */ +bool char_is_signed = true; -static void initialize_firm(void) +/** 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, ...) { - be_opt_register(); - firm_init_options(NULL, 0, NULL); - - firm_parameter_t params; - memset(¶ms, 0, sizeof(params)); - - params.size = sizeof(params); - params.enable_statistics = 0; - params.initialize_local_func = uninitialized_local_var; - params.cc_mask = 0; - params.builtin_dbg = NULL; - - /* initialize backend */ - be_params = be_init(); - ir_set_debug_retrieve(retrieve_dbg); - params.arch_op_settings = be_params->arch_op_settings; - if_conv_info = be_params->if_conv_info; - - (void) if_conv_info; /* avoid unused warning */ - - /* intialize firm itself */ - init_firm(¶ms); - dbg_init(NULL, NULL, dbg_snprint); - - set_opt_constant_folding(1); - set_opt_unreachable_code(1); - set_opt_control_flow_straightening(1); - set_opt_control_flow_weak_simplification(1); - set_opt_control_flow_strong_simplification(1); - set_opt_dyn_meth_dispatch(1); - set_opt_normalize(1); - set_opt_precise_exc_context(0); - set_opt_strength_red(0); - set_opt_fragile_ops(0); - set_opt_optimize_class_casts(0); - set_opt_suppress_downcast_optimization(0); - set_opt_remove_confirm(1); - set_opt_scalar_replacement(1); - set_opt_ldst_only_null_ptr_exceptions(1); - set_opt_alias_analysis(1); + va_list list; - dump_consts_local(1); - dump_keepalive_edges(1); + if (firm_dump.debug_print) { + va_start(list, fmt); + vprintf(fmt, list); + va_end(list); + } /* if */ } +#endif /* defined(_DEBUG) || defined(FIRM_DEBUG) */ -static void dump(ir_graph *irg, const char *suffix) +static void initialize_firm(void) { - if(do_dump) { - dump_ir_block_graph(irg, suffix); - } + firm_early_init(); + + dump_consts_local(1); + dump_keepalive_edges(1); } static void get_output_name(char *buf, size_t buflen, const char *inputname, @@ -150,20 +165,17 @@ static void lextest(FILE *in, const char *fname) } while(lexer_token.type != T_EOF); } -static void emit(FILE *out, const char *input_name) -{ - be_main(out, input_name); -} - 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", fname); + snprintf(buf, sizeof(buf), PREPROCESSOR " %s %s", flags, fname); } else { /* read from stdin */ - snprintf(buf, sizeof(buf), PREPROCESSOR " -"); + snprintf(buf, sizeof(buf), PREPROCESSOR " %s -", flags); } if(verbose) { @@ -180,8 +192,10 @@ static FILE* preprocess(FILE* in, const char *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); - snprintf(buf, sizeof(buf), "%s %s -o %s", LINKER, in, out); + snprintf(buf, sizeof(buf), LINKER " %s -o %s %s", flags, out, in); if(verbose) { puts(buf); } @@ -249,6 +263,15 @@ static const char *get_tempdir(void) return tmpdir; } +#ifndef HAVE_MKSTEMP +/* cheap and nasty mkstemp replacement */ +static int mkstemp(char *templ) +{ + 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)... @@ -279,18 +302,11 @@ static FILE *make_temp_file(char *buffer, size_t buflen, return out; } -static void create_firm_prog(translation_unit_t *unit) +/** + * Do the necessary lowering for compound parameters. + */ +void lower_compound_params(void) { - translation_unit_to_firm(unit); - - //dump_globals_as_text(dump_verbosity_max, "-globals"); - - int n_irgs = get_irp_n_irgs(); - for(int i = 0; i < n_irgs; ++i) { - ir_graph *const irg = get_irp_irg(i); - dump(irg, "-start"); - } - lower_params_t params; params.def_ptr_alignment = 4; @@ -299,59 +315,13 @@ static void create_firm_prog(translation_unit_t *unit) params.find_pointer_type = NULL; params.ret_compound_in_regs = NULL; lower_calls_with_compounds(¶ms); - - lower_highlevel(); - - for(int i = 0; i < n_irgs; ++i) { - ir_graph *const irg = get_irp_irg(i); - dump(irg, "-lower"); - } -} - -static void optimize(void) -{ - int arr_len; - ir_entity **keep_methods; - - cgana(&arr_len, &keep_methods); - gc_irgs(arr_len, keep_methods); - free(keep_methods); - - optimize_funccalls(0); - - lwrdw_param_t lwrdw_param = { - 1, - 1, - mode_Ls, mode_Lu, - mode_Is, mode_Iu, - def_create_intrinsic_fkt, - NULL - }; - if (be_params->arch_create_intrinsic_fkt) { - lwrdw_param.create_intrinsic = be_params->arch_create_intrinsic_fkt; - lwrdw_param.ctx = be_params->create_intrinsic_ctx; - } - - for(int i = 0; i < get_irp_n_irgs(); ++i) { - ir_graph *irg = get_irp_irg(i); - - optimize_graph_df(irg); - dump(irg, "-01-localopt"); - place_code(irg); - dump(irg, "-02-place"); - optimize_cf(irg); - dump(irg, "-03-cf"); - lower_dw_ops(&lwrdw_param); - dump(irg, "-04-dw"); - optimize_graph_df(irg); - dump(irg, "-05-localopt"); - optimize_cf(irg); - dump(irg, "-06-cf"); - } } typedef enum compile_mode_t { + BenchmarkParser, + ParseOnly, Compile, + CompileDump, CompileAssemble, CompileAssembleLink, LexTest, @@ -368,104 +338,277 @@ int main(int argc, char **argv) { initialize_firm(); - init_symbol_table(); - init_tokens(); - init_types(); - init_typehash(); - init_lexer(); - init_ast(); - init_parser(); - init_ast2firm(); + 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; \ + } \ + } - const char *input = NULL; - const char *outname = NULL; - compile_mode_t mode = CompileAssembleLink; +#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(strcmp(arg, "-o") == 0) { - ++i; - if(i >= argc) { - usage(argv[0]); - return 1; - } - outname = argv[i]; - } else if(strcmp(arg, "-c") == 0) { - mode = CompileAssemble; - } else if(strcmp(arg, "-S") == 0) { - mode = Compile; - } else if(strcmp(arg, "--lextest") == 0) { - mode = LexTest; - } else if(strcmp(arg, "--print-ast") == 0) { - mode = PrintAst; - } else if(strcmp(arg, "--print-fluffy") == 0) { - mode = PrintFluffy; - } else if(strcmp(arg, "--dump") == 0) { - do_dump = true; - } else if(strcmp(arg, "-v") == 0) { - verbose = 1; - } else if(arg[0] == '-' && arg[1] == 'f') { - const char *opt = &arg[2]; - if(opt[0] == 0) { - ++i; - if(i >= argc) { - usage(argv[0]); - return 1; + 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"); + } 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; + } } - opt = argv[i]; - if(opt[0] == '-') { - usage(argv[0]); - return 1; + } 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; } - } - //firm_option(opt); - } else if(arg[0] == '-' && arg[1] == 'b') { - const char *opt = &arg[2]; - if(opt[0] == 0) { - ++i; - if(i >= argc) { - usage(argv[0]); - return 1; + } 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; } - opt = argv[i]; - if(opt[0] == '-') { - usage(argv[0]); - return 1; + 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; } - } - //be_parse_arg(opt); - } else if(arg[0] == '-') { - if (arg[1] == '\0') { - input = "-"; - } else if (arg[1] == 'D' || - arg[1] == 'O' || - arg[1] == 'f' || - arg[1] == 'W' || - arg[1] == 'g' || - strncmp(arg + 1, "std=", 4) == 0) { - fprintf(stderr, "Warning: Ignoring option '%s'\n", arg); } else { - usage(argv[0]); - return 1; + fprintf(stderr, "error: unknown argument '%s'\n", arg); + argument_errors = true; } } else { if(input != NULL) { - fprintf(stderr, "Error: multiple input files specified\n"); - usage(argv[0]); - return 1; + fprintf(stderr, "error: multiple input files specified\n"); + argument_errors = true; } else { input = arg; } } } - FILE *out; + /* 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_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"); @@ -475,21 +618,27 @@ int main(int argc, char **argv) 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; } - assert(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; + 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; + } } } @@ -516,33 +665,81 @@ int main(int argc, char **argv) FILE *preprocessed_in = preprocess(in, input); translation_unit_t *const unit = do_parsing(preprocessed_in, input); - pclose(preprocessed_in); - if(unit == NULL) - return 1; + 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 == Compile) { + 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; + } - create_firm_prog(unit); - optimize(); - emit(asm_out, input); fclose(asm_out); + /* assemble assembler and create object file */ char obj_tfile[1024]; if(mode == CompileAssemble || mode == CompileAssembleLink) { const char *obj_outfile; @@ -559,10 +756,14 @@ int main(int argc, char **argv) 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();