nsz Git - cparser/blob - main.c

   1 #include <config.h>
   2
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <errno.h>
   6 #include <string.h>
   7
   8 #ifndef WITH_LIBCORE
   9 #define WITH_LIBCORE
  10 #endif
  11
  12 #include <libfirm/firm.h>
  13 #include <libfirm/be.h>
  14
  15 #include "lexer.h"
  16 #include "token_t.h"
  17 #include "type_hash.h"
  18 #include "parser.h"
  19 #include "ast2firm.h"
  20 #include "adt/error.h"
  21
  22 #define LINKER "gcc"
  23
  24 static int verbose;
  25
  26 static const ir_settings_if_conv_t *if_conv_info = NULL;
  27
  28 static void initialize_firm(void)
  29 {
  30         be_opt_register();
  31         firm_init_options(NULL, 0, NULL);
  32
  33         const backend_params *be_params;
  34         firm_parameter_t params;
  35         memset(&params, 0, sizeof(params));
  36
  37         params.size = sizeof(params);
  38         params.enable_statistics = 0;
  39         params.initialize_local_func = uninitialized_local_var;
  40         params.cc_mask = 0;
  41         params.builtin_dbg = NULL;
  42
  43         /* initialize backend */
  44         be_params = be_init();
  45         be_set_debug_retrieve(retrieve_dbg);
  46         params.arch_op_settings = be_params->arch_op_settings;
  47         if_conv_info            = be_params->if_conv_info;
  48
  49         /* intialize firm itself */
  50         init_firm(&params);
  51         dbg_init(NULL, NULL, dbg_snprint);
  52
  53         set_opt_constant_folding(1);
  54         set_opt_unreachable_code(1);
  55         set_opt_control_flow_straightening(1);
  56         set_opt_control_flow_weak_simplification(1);
  57         set_opt_control_flow_strong_simplification(1);
  58         set_opt_dead_node_elimination(1);
  59         set_opt_reassociation(1);
  60         set_opt_inline(1);
  61         set_opt_dyn_meth_dispatch(1);
  62         set_opt_normalize(1);
  63         set_opt_tail_recursion(1);
  64         set_opt_dead_method_elimination(1);
  65         set_opt_precise_exc_context(0);
  66         set_opt_loop_unrolling(0);
  67         set_opt_strength_red(0);
  68         set_opt_redundant_loadstore(1);
  69         set_opt_fragile_ops(0);
  70         set_opt_function_call(1);
  71         set_opt_optimize_class_casts(0);
  72         set_opt_suppress_downcast_optimization(0);
  73         set_opt_remove_confirm(1);
  74         set_opt_scalar_replacement(1);
  75         set_opt_ldst_only_null_ptr_exceptions(1);
  76         set_opt_alias_analysis(1);
  77
  78         dump_consts_local(1);
  79 }
  80
  81 static void dump(const char *suffix)
  82 {
  83         dump_ir_block_graph(current_ir_graph, suffix);
  84 }
  85
  86 static void get_output_name(char *buf, size_t buflen, const char *inputname,
  87                             const char *newext)
  88 {
  89         size_t last_dot = 0xffffffff;
  90         size_t i = 0;
  91         for(const char *c = inputname; *c != 0; ++c) {
  92                 if(*c == '.')
  93                         last_dot = i;
  94                 ++i;
  95         }
  96         if(last_dot == 0xffffffff)
  97                 last_dot = i;
  98
  99         if(last_dot >= buflen)
 100                 panic("filename too long");
 101         memcpy(buf, inputname, last_dot);
 102
 103         size_t extlen = strlen(newext) + 1;
 104         if(extlen + last_dot >= buflen)
 105                 panic("filename too long");
 106         memcpy(buf+last_dot, newext, extlen);
 107 }
 108
 109 static translation_unit_t *do_parsing(const char *fname)
 110 {
 111         FILE *in = fopen(fname, "r");
 112         if(in == NULL) {
 113                 fprintf(stderr, "Couldn't open '%s': %s\n", fname, strerror(errno));
 114                 exit(1);
 115         }
 116
 117         lexer_open_stream(in, fname);
 118
 119         translation_unit_t *unit = parse();
 120
 121         fclose(in);
 122
 123         return unit;
 124 }
 125
 126 static void lextest(const char *fname)
 127 {
 128         FILE *in = fopen(fname, "r");
 129         if(in == NULL) {
 130                 fprintf(stderr, "Couldn't open '%s': %s\n", fname, strerror(errno));
 131                 exit(1);
 132         }
 133
 134         lexer_open_stream(in, fname);
 135
 136         do {
 137                 lexer_next_preprocessing_token();
 138                 print_token(stdout, &lexer_token);
 139                 puts("");
 140         } while(lexer_token.type != T_EOF);
 141
 142         fclose(in);
 143 }
 144
 145 static void backend(const char *inputname, const char *outname)
 146 {
 147         FILE *out = fopen(outname, "w");
 148         if(out == NULL) {
 149                 fprintf(stderr, "couldn't open '%s' for writing: %s\n", outname,
 150                                 strerror(errno));
 151                 exit(1);
 152         }
 153
 154         be_main(out, inputname);
 155
 156         fclose(out);
 157 }
 158
 159 static void emit(const char *input_name, const char *out_name)
 160 {
 161         backend(input_name, out_name);
 162 }
 163
 164 static void link(const char *in, const char *out)
 165 {
 166         char buf[4096];
 167
 168         snprintf(buf, sizeof(buf), "%s %s -o %s", LINKER, in, out);
 169         if(verbose) {
 170                 puts(buf);
 171         }
 172         int err = system(buf);
 173         if(err != 0) {
 174                 fprintf(stderr, "linker reported an error\n");
 175                 exit(1);
 176         }
 177 }
 178
 179
 180
 181 static void create_firm_prog(translation_unit_t *unit)
 182 {
 183         translation_unit_to_firm(unit);
 184
 185         int n_irgs = get_irp_n_irgs();
 186         for(int i = 0; i < n_irgs; ++i) {
 187                 current_ir_graph = get_irp_irg(i);
 188                 dump("-start");
 189         }
 190 }
 191
 192 void write_fluffy_decls(translation_unit_t *unit);
 193
 194 int main(int argc, char **argv)
 195 {
 196         initialize_firm();
 197
 198         init_symbol_table();
 199         init_tokens();
 200         init_lexer();
 201         init_types();
 202         init_typehash();
 203         init_ast();
 204         init_parser();
 205         init_ast2firm();
 206
 207         if(argc > 2 && strcmp(argv[1], "--lextest") == 0) {
 208                 lextest(argv[2]);
 209                 return 0;
 210         }
 211
 212         if(argc > 2 && strcmp(argv[1], "--print-ast") == 0) {
 213                 translation_unit_t *unit = do_parsing(argv[2]);
 214                 ast_set_output(stdout);
 215                 print_ast(unit);
 216                 return 0;
 217         }
 218
 219         if(argc > 2 && strcmp(argv[1], "--print-fluffy") == 0) {
 220                 translation_unit_t *unit = do_parsing(argv[2]);
 221                 ast_set_output(stdout);
 222                 write_fluffy_decls(unit);
 223                 return 0;
 224         }
 225
 226         for(int i = 1; i < argc; ++i) {
 227                 const char *input = argv[i];
 228                 char        outfname[4096];
 229
 230                 get_output_name(outfname, sizeof(outfname), input, ".s");
 231
 232                 translation_unit_t *unit = do_parsing(input);
 233                 create_firm_prog(unit);
 234                 emit(input, outfname);
 235                 link(outfname, "a.out");
 236         }
 237
 238         exit_ast2firm();
 239         exit_parser();
 240         exit_ast();
 241         exit_typehash();
 242         exit_types();
 243         exit_lexer();
 244         exit_tokens();
 245         exit_symbol_table();
 246         return 0;
 247 }