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 <errno.h>
   8 #include <string.h>
   9 #include <assert.h>
  10
  11 #ifndef WITH_LIBCORE
  12 #define WITH_LIBCORE
  13 #endif
  14
  15 #include <libfirm/firm.h>
  16 #include <libfirm/be.h>
  17
  18 #include "lexer.h"
  19 #include "token_t.h"
  20 #include "type_hash.h"
  21 #include "parser.h"
  22 #include "ast2firm.h"
  23 #include "adt/error.h"
  24
  25 #ifndef PREPROCESSOR
  26 #define PREPROCESSOR "cpp"
  27 #endif
  28
  29 #ifndef LINKER
  30 #define LINKER       "gcc"
  31 #endif
  32
  33 #ifdef _WIN32
  34 /* remap some names */
  35 #define popen(cmd, mode)  _popen(cmd, mode)
  36 #define pclose(file)      _pclose(file)
  37 #endif /* _WIN32 */
  38
  39 static int verbose;
  40
  41 static const ir_settings_if_conv_t *if_conv_info = NULL;
  42
  43 static void initialize_firm(void)
  44 {
  45         be_opt_register();
  46         firm_init_options(NULL, 0, NULL);
  47
  48         const backend_params *be_params;
  49         firm_parameter_t params;
  50         memset(&params, 0, sizeof(params));
  51
  52         params.size = sizeof(params);
  53         params.enable_statistics = 0;
  54         params.initialize_local_func = uninitialized_local_var;
  55         params.cc_mask = 0;
  56         params.builtin_dbg = NULL;
  57
  58         /* initialize backend */
  59         be_params = be_init();
  60         be_set_debug_retrieve(retrieve_dbg);
  61         params.arch_op_settings = be_params->arch_op_settings;
  62         if_conv_info            = be_params->if_conv_info;
  63
  64         /* intialize firm itself */
  65         init_firm(&params);
  66         dbg_init(NULL, NULL, dbg_snprint);
  67
  68         set_opt_constant_folding(1);
  69         set_opt_unreachable_code(1);
  70         set_opt_control_flow_straightening(1);
  71         set_opt_control_flow_weak_simplification(1);
  72         set_opt_control_flow_strong_simplification(1);
  73         set_opt_dyn_meth_dispatch(1);
  74         set_opt_normalize(1);
  75         set_opt_precise_exc_context(0);
  76         set_opt_strength_red(0);
  77         set_opt_fragile_ops(0);
  78         set_opt_optimize_class_casts(0);
  79         set_opt_suppress_downcast_optimization(0);
  80         set_opt_remove_confirm(1);
  81         set_opt_scalar_replacement(1);
  82         set_opt_ldst_only_null_ptr_exceptions(1);
  83         set_opt_alias_analysis(1);
  84
  85         dump_consts_local(1);
  86         dump_keepalive_edges(1);
  87 }
  88
  89 static void dump(ir_graph *irg, const char *suffix)
  90 {
  91 #if 0
  92         dump_ir_block_graph(irg, suffix);
  93 #else
  94         (void)irg, (void)suffix;
  95 #endif
  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 #ifdef _WIN32
 171         snprintf(buf, sizeof(buf), PREPROCESSOR " %s",in);
 172 #else
 173         snprintf(buf, sizeof(buf), PREPROCESSOR " %s -o -",in);
 174 #endif
 175
 176         if(verbose) {
 177                 puts(buf);
 178         }
 179         FILE* f = popen(buf, "r");
 180         if (f == NULL) {
 181                 fprintf(stderr, "invoking preprocessor failed\n");
 182                 exit(1);
 183         }
 184         return f;
 185 }
 186
 187 static void link(const char *in, const char *out)
 188 {
 189         char buf[4096];
 190
 191         snprintf(buf, sizeof(buf), "%s %s -o %s", LINKER, in, out);
 192         if(verbose) {
 193                 puts(buf);
 194         }
 195         int err = system(buf);
 196         if(err != 0) {
 197                 fprintf(stderr, "linker reported an error\n");
 198                 exit(1);
 199         }
 200 }
 201
 202 static void assemble(const char *in, const char *out)
 203 {
 204         char buf[4096];
 205
 206         snprintf(buf, sizeof(buf), "%s %s -c -o %s", LINKER, in, out);
 207         if(verbose) {
 208                 puts(buf);
 209         }
 210         int err = system(buf);
 211         if(err != 0) {
 212                 fprintf(stderr, "assembler reported an error\n");
 213                 exit(1);
 214         }
 215 }
 216
 217 static void create_firm_prog(translation_unit_t *unit)
 218 {
 219         translation_unit_to_firm(unit);
 220
 221         //dump_globals_as_text(dump_verbosity_max, "-globals");
 222
 223         int n_irgs = get_irp_n_irgs();
 224         for(int i = 0; i < n_irgs; ++i) {
 225                 ir_graph *const irg = get_irp_irg(i);
 226                 dump(irg, "-start");
 227         }
 228
 229         lower_highlevel();
 230         for(int i = 0; i < n_irgs; ++i) {
 231                 ir_graph *const irg = get_irp_irg(i);
 232                 dump(irg, "-lower");
 233         }
 234 }
 235
 236 static void optimize(void)
 237 {
 238         int         arr_len;
 239         ir_entity **keep_methods;
 240
 241         cgana(&arr_len, &keep_methods);
 242         gc_irgs(arr_len, keep_methods);
 243         free(keep_methods);
 244
 245         optimize_funccalls(0);
 246
 247         const backend_params *const be_params = be_init();
 248         create_intrinsic_fkt *const arch_create_intrinsic = be_params->arch_create_intrinsic_fkt;
 249         void                 *const create_intrinsic_ctx  = be_params->create_intrinsic_ctx;
 250         lwrdw_param_t lwrdw_param = {
 251                 1,
 252                 1,
 253                 mode_Ls, mode_Lu,
 254                 mode_Is, mode_Iu,
 255                 def_create_intrinsic_fkt,
 256                 NULL
 257         };
 258         if (arch_create_intrinsic) {
 259                 lwrdw_param.create_intrinsic = arch_create_intrinsic;
 260                 lwrdw_param.ctx              = create_intrinsic_ctx;
 261         }
 262
 263         for(int i = 0; i < get_irp_n_irgs(); ++i) {
 264                 ir_graph *irg = get_irp_irg(i);
 265
 266                 optimize_graph_df(irg);
 267                 dump(irg, "-01-localopt");
 268                 place_code(irg);
 269                 dump(irg, "-02-place");
 270                 optimize_cf(irg);
 271                 dump(irg, "-03-cf");
 272                 lower_dw_ops(&lwrdw_param);
 273                 dump(irg, "-04-dw");
 274                 optimize_graph_df(irg);
 275                 dump(irg, "-05-localopt");
 276                 optimize_cf(irg);
 277                 dump(irg, "-06-cf");
 278         }
 279 }
 280
 281 void write_fluffy_decls(translation_unit_t *unit);
 282
 283 typedef enum compile_mode_t {
 284         Compile,
 285         CompileAssemble,
 286         CompileAssembleLink,
 287         LexTest,
 288         PrintAst,
 289         PrintFluffy
 290 } compile_mode_t;
 291
 292 static void usage(const char *argv0)
 293 {
 294         fprintf(stderr, "Usage %s input [-o output] [-c]\n", argv0);
 295 }
 296
 297 int main(int argc, char **argv)
 298 {
 299         initialize_firm();
 300
 301         init_symbol_table();
 302         init_tokens();
 303         init_lexer();
 304         init_types();
 305         init_typehash();
 306         init_ast();
 307         init_parser();
 308         init_ast2firm();
 309
 310         const char *input   = NULL;
 311         const char *outname = NULL;
 312         compile_mode_t mode = CompileAssembleLink;
 313
 314         for(int i = 1; i < argc; ++i) {
 315                 const char *arg = argv[i];
 316                 if(strcmp(arg, "-o") == 0) {
 317                         ++i;
 318                         if(i >= argc) {
 319                                 usage(argv[0]);
 320                                 return 1;
 321                         }
 322                         outname = argv[i];
 323                 } else if(strcmp(arg, "-c") == 0) {
 324                         mode = CompileAssemble;
 325                 } else if(strcmp(arg, "-S") == 0) {
 326                         mode = Compile;
 327                 } else if(strcmp(arg, "--lextest") == 0) {
 328                         mode = LexTest;
 329                 } else if(strcmp(arg, "--print-ast") == 0) {
 330                         mode = PrintAst;
 331                 } else if(strcmp(arg, "--print-fluffy") == 0) {
 332                         mode = PrintFluffy;
 333                 } else if(strcmp(arg, "-v") == 0) {
 334                         verbose = 1;
 335                 } else if(arg[0] == '-') {
 336                         if (arg[1] == 'D' ||
 337                                         arg[1] == 'O' ||
 338                                         arg[1] == 'f' ||
 339                                         strncmp(arg + 1, "std=", 4) == 0) {
 340                                 fprintf(stderr, "Warning: Ignoring option '%s'\n", arg);
 341                         } else {
 342                                 usage(argv[0]);
 343                                 return 1;
 344                         }
 345                 } else {
 346                         if(input != NULL) {
 347                                 fprintf(stderr, "Error: multiple input files specified\n");
 348                                 usage(argv[0]);
 349                                 return 1;
 350                         } else {
 351                                 input = arg;
 352                         }
 353                 }
 354         }
 355
 356         if(input == NULL) {
 357                 fprintf(stderr, "%s: no input files\n", argv[0]);
 358                 return 1;
 359         }
 360
 361         if(mode == LexTest) {
 362                 lextest(input);
 363                 return 0;
 364         }
 365
 366         FILE *const in = preprocess(input);
 367         translation_unit_t *const unit = do_parsing(in, input);
 368         pclose(in);
 369         if(unit == NULL)
 370                 return 1;
 371
 372         if(mode == PrintAst) {
 373                 print_ast(unit);
 374                 return 0;
 375         }
 376         if(mode == PrintFluffy) {
 377                 ast_set_output(stdout);
 378                 write_fluffy_decls(unit);
 379         }
 380
 381         char outsname[4096];
 382         const char *sname = NULL;
 383         if(mode == Compile) {
 384                 sname = outname;
 385         }
 386         if(sname == NULL) {
 387                 get_output_name(outsname, sizeof(outsname), input, ".s");
 388                 sname = outsname;
 389         }
 390
 391         create_firm_prog(unit);
 392         optimize();
 393         emit(input, sname);
 394
 395         if(mode == CompileAssemble) {
 396                 char outoname[4096];
 397                 const char *oname = outname;
 398                 if(oname == NULL) {
 399                         get_output_name(outoname, sizeof(outoname), input, ".o");
 400                         oname = outoname;
 401                 }
 402                 assemble(sname, oname);
 403         } else {
 404                 assert(mode == CompileAssembleLink);
 405
 406                 if(outname == NULL)
 407                         outname = "a.out";
 408
 409                 link(sname, outname);
 410         }
 411
 412         exit_ast2firm();
 413         exit_parser();
 414         exit_ast();
 415         exit_typehash();
 416         exit_types();
 417         exit_lexer();
 418         exit_tokens();
 419         exit_symbol_table();
 420         return 0;
 421 }