nsz Git - cparser/blob - main.c

   1 #include <config.h>
   2
   3 #define _GNU_SOURCE
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <stdbool.h>
   8 #include <errno.h>
   9 #include <string.h>
  10 #include <assert.h>
  11
  12 #ifndef WITH_LIBCORE
  13 #define WITH_LIBCORE
  14 #endif
  15
  16 #include <libfirm/firm.h>
  17 #include <libfirm/be.h>
  18
  19 #include "lexer.h"
  20 #include "token_t.h"
  21 #include "type_hash.h"
  22 #include "parser.h"
  23 #include "ast2firm.h"
  24 #include "adt/error.h"
  25
  26 #ifndef PREPROCESSOR
  27 #define PREPROCESSOR "cpp"
  28 #endif
  29
  30 #ifndef LINKER
  31 #define LINKER       "gcc"
  32 #endif
  33
  34 #ifdef _WIN32
  35 /* remap some names */
  36 #define popen(cmd, mode)  _popen(cmd, mode)
  37 #define pclose(file)      _pclose(file)
  38 #endif /* _WIN32 */
  39
  40 static int  verbose;
  41 static bool do_dump;
  42
  43 static const ir_settings_if_conv_t *if_conv_info = NULL;
  44 static const backend_params        *be_params    = NULL;
  45
  46 static void initialize_firm(void)
  47 {
  48         be_opt_register();
  49         firm_init_options(NULL, 0, NULL);
  50
  51         firm_parameter_t params;
  52         memset(&params, 0, sizeof(params));
  53
  54         params.size = sizeof(params);
  55         params.enable_statistics = 0;
  56         params.initialize_local_func = uninitialized_local_var;
  57         params.cc_mask = 0;
  58         params.builtin_dbg = NULL;
  59
  60         /* initialize backend */
  61         be_params = be_init();
  62         ir_set_debug_retrieve(retrieve_dbg);
  63         params.arch_op_settings = be_params->arch_op_settings;
  64         if_conv_info            = be_params->if_conv_info;
  65
  66         /* intialize firm itself */
  67         init_firm(&params);
  68         dbg_init(NULL, NULL, dbg_snprint);
  69
  70         set_opt_constant_folding(1);
  71         set_opt_unreachable_code(1);
  72         set_opt_control_flow_straightening(1);
  73         set_opt_control_flow_weak_simplification(1);
  74         set_opt_control_flow_strong_simplification(1);
  75         set_opt_dyn_meth_dispatch(1);
  76         set_opt_normalize(1);
  77         set_opt_precise_exc_context(0);
  78         set_opt_strength_red(0);
  79         set_opt_fragile_ops(0);
  80         set_opt_optimize_class_casts(0);
  81         set_opt_suppress_downcast_optimization(0);
  82         set_opt_remove_confirm(1);
  83         set_opt_scalar_replacement(1);
  84         set_opt_ldst_only_null_ptr_exceptions(1);
  85         set_opt_alias_analysis(1);
  86
  87         dump_consts_local(1);
  88         dump_keepalive_edges(1);
  89 }
  90
  91 static void dump(ir_graph *irg, const char *suffix)
  92 {
  93         if(do_dump) {
  94                 dump_ir_block_graph(irg, suffix);
  95         }
  96 }
  97
  98 static void get_output_name(char *buf, size_t buflen, const char *inputname,
  99                             const char *newext)
 100 {
 101         size_t last_dot = 0xffffffff;
 102         size_t i = 0;
 103         for(const char *c = inputname; *c != 0; ++c) {
 104                 if(*c == '.')
 105                         last_dot = i;
 106                 ++i;
 107         }
 108         if(last_dot == 0xffffffff)
 109                 last_dot = i;
 110
 111         if(last_dot >= buflen)
 112                 panic("filename too long");
 113         memcpy(buf, inputname, last_dot);
 114
 115         size_t extlen = strlen(newext) + 1;
 116         if(extlen + last_dot >= buflen)
 117                 panic("filename too long");
 118         memcpy(buf+last_dot, newext, extlen);
 119 }
 120
 121 static translation_unit_t *do_parsing(FILE *const in, const char *const input)
 122 {
 123         lexer_open_stream(in, input);
 124         translation_unit_t *unit = parse();
 125         return unit;
 126 }
 127
 128 static void lextest(const char *fname)
 129 {
 130         FILE *in = fopen(fname, "r");
 131         if(in == NULL) {
 132                 fprintf(stderr, "Couldn't open '%s': %s\n", fname, strerror(errno));
 133                 exit(1);
 134         }
 135
 136         lexer_open_stream(in, fname);
 137
 138         do {
 139                 lexer_next_preprocessing_token();
 140                 print_token(stdout, &lexer_token);
 141                 puts("");
 142         } while(lexer_token.type != T_EOF);
 143
 144         fclose(in);
 145 }
 146
 147 static void backend(const char *inputname, const char *outname)
 148 {
 149         FILE *out = fopen(outname, "w");
 150         if(out == NULL) {
 151                 fprintf(stderr, "couldn't open '%s' for writing: %s\n", outname,
 152                                 strerror(errno));
 153                 exit(1);
 154         }
 155
 156         be_main(out, inputname);
 157
 158         fclose(out);
 159 }
 160
 161 static void emit(const char *input_name, const char *out_name)
 162 {
 163         backend(input_name, out_name);
 164 }
 165
 166 static FILE* preprocess(const char *in)
 167 {
 168         char buf[4096];
 169
 170         snprintf(buf, sizeof(buf), PREPROCESSOR " %s", in);
 171
 172         if(verbose) {
 173                 puts(buf);
 174         }
 175         FILE* f = popen(buf, "r");
 176         if (f == NULL) {
 177                 fprintf(stderr, "invoking preprocessor failed\n");
 178                 exit(1);
 179         }
 180         return f;
 181 }
 182
 183 static void link(const char *in, const char *out)
 184 {
 185         char buf[4096];
 186
 187         snprintf(buf, sizeof(buf), "%s %s -o %s", LINKER, in, out);
 188         if(verbose) {
 189                 puts(buf);
 190         }
 191         int err = system(buf);
 192         if(err != 0) {
 193                 fprintf(stderr, "linker reported an error\n");
 194                 exit(1);
 195         }
 196 }
 197
 198 static void assemble(const char *in, const char *out)
 199 {
 200         char buf[4096];
 201
 202         snprintf(buf, sizeof(buf), "%s %s -c -o %s", LINKER, in, out);
 203         if(verbose) {
 204                 puts(buf);
 205         }
 206         int err = system(buf);
 207         if(err != 0) {
 208                 fprintf(stderr, "assembler reported an error\n");
 209                 exit(1);
 210         }
 211 }
 212
 213 static void create_firm_prog(translation_unit_t *unit)
 214 {
 215         translation_unit_to_firm(unit);
 216
 217         //dump_globals_as_text(dump_verbosity_max, "-globals");
 218
 219         int n_irgs = get_irp_n_irgs();
 220         for(int i = 0; i < n_irgs; ++i) {
 221                 ir_graph *const irg = get_irp_irg(i);
 222                 dump(irg, "-start");
 223         }
 224
 225         lower_params_t params;
 226
 227         params.def_ptr_alignment    = 4;
 228         params.flags                = LF_COMPOUND_RETURN | LF_RETURN_HIDDEN;
 229         params.hidden_params        = ADD_HIDDEN_ALWAYS_IN_FRONT;
 230         params.find_pointer_type    = NULL;
 231         params.ret_compound_in_regs = NULL;
 232         lower_calls_with_compounds(&params);
 233
 234         lower_highlevel();
 235         for(int i = 0; i < n_irgs; ++i) {
 236                 ir_graph *const irg = get_irp_irg(i);
 237                 dump(irg, "-lower");
 238         }
 239 }
 240
 241 static void optimize(void)
 242 {
 243         int         arr_len;
 244         ir_entity **keep_methods;
 245
 246         cgana(&arr_len, &keep_methods);
 247         gc_irgs(arr_len, keep_methods);
 248         free(keep_methods);
 249
 250         optimize_funccalls(0);
 251
 252         lwrdw_param_t lwrdw_param = {
 253                 1,
 254                 1,
 255                 mode_Ls, mode_Lu,
 256                 mode_Is, mode_Iu,
 257                 def_create_intrinsic_fkt,
 258                 NULL
 259         };
 260         if (be_params->arch_create_intrinsic_fkt) {
 261                 lwrdw_param.create_intrinsic = be_params->arch_create_intrinsic_fkt;
 262                 lwrdw_param.ctx              = be_params->create_intrinsic_ctx;
 263         }
 264
 265         for(int i = 0; i < get_irp_n_irgs(); ++i) {
 266                 ir_graph *irg = get_irp_irg(i);
 267
 268                 optimize_graph_df(irg);
 269                 dump(irg, "-01-localopt");
 270                 place_code(irg);
 271                 dump(irg, "-02-place");
 272                 optimize_cf(irg);
 273                 dump(irg, "-03-cf");
 274                 lower_dw_ops(&lwrdw_param);
 275                 dump(irg, "-04-dw");
 276                 optimize_graph_df(irg);
 277                 dump(irg, "-05-localopt");
 278                 optimize_cf(irg);
 279                 dump(irg, "-06-cf");
 280         }
 281 }
 282
 283 void write_fluffy_decls(translation_unit_t *unit);
 284
 285 typedef enum compile_mode_t {
 286         Compile,
 287         CompileAssemble,
 288         CompileAssembleLink,
 289         LexTest,
 290         PrintAst,
 291         PrintFluffy
 292 } compile_mode_t;
 293
 294 static void usage(const char *argv0)
 295 {
 296         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 297 }
 298
 299 int main(int argc, char **argv)
 300 {
 301         initialize_firm();
 302
 303         init_symbol_table();
 304         init_tokens();
 305         init_types();
 306         init_typehash();
 307         init_lexer();
 308         init_ast();
 309         init_parser();
 310         init_ast2firm();
 311
 312         const char *input   = NULL;
 313         const char *outname = NULL;
 314         compile_mode_t mode = CompileAssembleLink;
 315
 316         for(int i = 1; i < argc; ++i) {
 317                 const char *arg = argv[i];
 318                 if(strcmp(arg, "-o") == 0) {
 319                         ++i;
 320                         if(i >= argc) {
 321                                 usage(argv[0]);
 322                                 return 1;
 323                         }
 324                         outname = argv[i];
 325                 } else if(strcmp(arg, "-c") == 0) {
 326                         mode = CompileAssemble;
 327                 } else if(strcmp(arg, "-S") == 0) {
 328                         mode = Compile;
 329                 } else if(strcmp(arg, "--lextest") == 0) {
 330                         mode = LexTest;
 331                 } else if(strcmp(arg, "--print-ast") == 0) {
 332                         mode = PrintAst;
 333                 } else if(strcmp(arg, "--print-fluffy") == 0) {
 334                         mode = PrintFluffy;
 335                 } else if(strcmp(arg, "--dump") == 0) {
 336                         do_dump = true;
 337                 } else if(strcmp(arg, "-v") == 0) {
 338                         verbose = 1;
 339                 } else if(arg[0] == '-' && arg[1] == 'f') {
 340                         const char *opt = &arg[2];
 341                         if(opt[0] == 0) {
 342                                 ++i;
 343                                 if(i >= argc) {
 344                                         usage(argv[0]);
 345                                         return 1;
 346                                 }
 347                                 opt = argv[i];
 348                                 if(opt[0] == '-') {
 349                                         usage(argv[0]);
 350                                         return 1;
 351                                 }
 352                         }
 353                         //firm_option(opt);
 354                 } else if(arg[0] == '-' && arg[1] == 'b') {
 355                         const char *opt = &arg[2];
 356                         if(opt[0] == 0) {
 357                                 ++i;
 358                                 if(i >= argc) {
 359                                         usage(argv[0]);
 360                                         return 1;
 361                                 }
 362                                 opt = argv[i];
 363                                 if(opt[0] == '-') {
 364                                         usage(argv[0]);
 365                                         return 1;
 366                                 }
 367                         }
 368                         //firm_be_option(opt);
 369                 } else if(arg[0] == '-') {
 370                         if (arg[1] == 'D' ||
 371                                         arg[1] == 'O' ||
 372                                         arg[1] == 'f' ||
 373                                         strncmp(arg + 1, "std=", 4) == 0) {
 374                                 fprintf(stderr, "Warning: Ignoring option '%s'\n", arg);
 375                         } else {
 376                                 usage(argv[0]);
 377                                 return 1;
 378                         }
 379                 } else {
 380                         if(input != NULL) {
 381                                 fprintf(stderr, "Error: multiple input files specified\n");
 382                                 usage(argv[0]);
 383                                 return 1;
 384                         } else {
 385                                 input = arg;
 386                         }
 387                 }
 388         }
 389
 390         if(input == NULL) {
 391                 fprintf(stderr, "%s: no input files\n", argv[0]);
 392                 return 1;
 393         }
 394
 395         if(mode == LexTest) {
 396                 lextest(input);
 397                 return 0;
 398         }
 399
 400         FILE *const in = preprocess(input);
 401         translation_unit_t *const unit = do_parsing(in, input);
 402         pclose(in);
 403         if(unit == NULL)
 404                 return 1;
 405
 406         if(mode == PrintAst) {
 407                 print_ast(unit);
 408                 return 0;
 409         }
 410         if(mode == PrintFluffy) {
 411                 ast_set_output(stdout);
 412                 write_fluffy_decls(unit);
 413         }
 414
 415         char outsname[4096];
 416         const char *sname = NULL;
 417         if(mode == Compile) {
 418                 sname = outname;
 419         }
 420         if(sname == NULL) {
 421                 get_output_name(outsname, sizeof(outsname), input, ".s");
 422                 sname = outsname;
 423         }
 424
 425         create_firm_prog(unit);
 426         optimize();
 427         emit(input, sname);
 428
 429         if(mode == CompileAssemble) {
 430                 char outoname[4096];
 431                 const char *oname = outname;
 432                 if(oname == NULL) {
 433                         get_output_name(outoname, sizeof(outoname), input, ".o");
 434                         oname = outoname;
 435                 }
 436                 assemble(sname, oname);
 437         } else {
 438                 assert(mode == CompileAssembleLink);
 439
 440                 if(outname == NULL)
 441                         outname = "a.out";
 442
 443                 link(sname, outname);
 444         }
 445
 446         exit_ast2firm();
 447         exit_parser();
 448         exit_ast();
 449         exit_lexer();
 450         exit_typehash();
 451         exit_types();
 452         exit_tokens();
 453         exit_symbol_table();
 454         return 0;
 455 }