2 * Copyright (C) 2012, 2013, 2014, 2015
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is furnished to do
11 * so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
28 * We could use the old method of casting to uintptr_t then to void*
29 * or qcint_t; however, it's incredibly unsafe for two reasons.
30 * 1) The compilers aliasing optimization can legally make it unstable
31 * (it's undefined behaviour).
33 * 2) The cast itself depends on fresh storage (newly allocated in which
34 * ever function is using the cast macros), the contents of which are
35 * transferred in a way that the obligation to release storage is not
43 /* Some sanity macros */
44 #define CODE_HASH_ENTER(ENTRY) ((ENTRY).enter)
45 #define CODE_HASH_LEAVE(ENTRY) ((ENTRY).leave)
47 void code_push_statement(code_t *code, prog_section_statement_t *stmt_in, lex_ctx_t ctx)
49 prog_section_statement_t stmt = *stmt_in;
51 if (OPTS_FLAG(TYPELESS_STORES)) {
52 switch (stmt.opcode) {
57 stmt.opcode = INSTR_LOAD_F;
63 stmt.opcode = INSTR_STORE_F;
66 case INSTR_STOREP_ENT:
67 case INSTR_STOREP_FLD:
68 case INSTR_STOREP_FNC:
69 stmt.opcode = INSTR_STOREP_F;
75 if (OPTS_FLAG(SORT_OPERANDS)) {
78 switch (stmt.opcode) {
95 if (stmt.o1.u1 < stmt.o2.u1) {
96 uint16_t a = stmt.o2.u1;
97 stmt.o1.u1 = stmt.o2.u1;
102 case INSTR_MUL_VF: pair = INSTR_MUL_FV; goto case_pair_gen;
103 case INSTR_MUL_FV: pair = INSTR_MUL_VF; goto case_pair_gen;
104 case INSTR_LT: pair = INSTR_GT; goto case_pair_gen;
105 case INSTR_GT: pair = INSTR_LT; goto case_pair_gen;
106 case INSTR_LE: pair = INSTR_GT; goto case_pair_gen;
107 case INSTR_GE: pair = INSTR_LE;
110 if (stmt.o1.u1 < stmt.o2.u1) {
111 uint16_t x = stmt.o1.u1;
112 stmt.o1.u1 = stmt.o2.u1;
120 vec_push(code->statements, stmt);
121 vec_push(code->linenums, (int)ctx.line);
122 vec_push(code->columnnums, (int)ctx.column);
125 void code_pop_statement(code_t *code)
127 vec_pop(code->statements);
128 vec_pop(code->linenums);
129 vec_pop(code->columnnums);
132 code_t *code_init() {
133 static lex_ctx_t empty_ctx = {0, 0, 0};
134 static prog_section_function_t empty_function = {0,0,0,0,0,0,0,{0,0,0,0,0,0,0,0}};
135 static prog_section_statement_t empty_statement = {0,{0},{0},{0}};
136 static prog_section_def_t empty_def = {0, 0, 0};
138 code_t *code = (code_t*)mem_a(sizeof(code_t));
141 memset(code, 0, sizeof(code_t));
143 code->string_cache = util_htnew(OPTS_OPTIMIZATION(OPTIM_OVERLAP_STRINGS) ? 0x100 : 1024);
146 * The way progs.dat is suppose to work is odd, there needs to be
147 * some null (empty) statements, functions, and 28 globals
150 vec_push(code->globals, 0);
152 vec_push(code->chars, '\0');
153 vec_push(code->functions, empty_function);
155 code_push_statement(code, &empty_statement, empty_ctx);
157 vec_push(code->defs, empty_def);
158 vec_push(code->fields, empty_def);
163 void *code_util_str_htgeth(hash_table_t *ht, const char *key, size_t bin);
165 uint32_t code_genstring(code_t *code, const char *str) {
167 code_hash_entry_t existing;
173 if (!code->string_cached_empty) {
174 code->string_cached_empty = vec_size(code->chars);
175 vec_push(code->chars, 0);
177 return code->string_cached_empty;
180 if (OPTS_OPTIMIZATION(OPTIM_OVERLAP_STRINGS)) {
181 hash = ((unsigned char*)str)[strlen(str)-1];
182 CODE_HASH_ENTER(existing) = code_util_str_htgeth(code->string_cache, str, hash);
184 hash = util_hthash(code->string_cache, str);
185 CODE_HASH_ENTER(existing) = util_htgeth(code->string_cache, str, hash);
188 if (CODE_HASH_ENTER(existing))
189 return CODE_HASH_LEAVE(existing);
191 CODE_HASH_LEAVE(existing) = vec_size(code->chars);
192 vec_append(code->chars, strlen(str)+1, str);
194 util_htseth(code->string_cache, str, hash, CODE_HASH_ENTER(existing));
195 return CODE_HASH_LEAVE(existing);
198 qcint_t code_alloc_field (code_t *code, size_t qcsize)
200 qcint_t pos = (qcint_t)code->entfields;
201 code->entfields += qcsize;
205 static size_t code_size_generic(code_t *code, prog_header_t *code_header, bool lno) {
208 size += 4; /* LNOF */
209 size += sizeof(uint32_t); /* version */
210 size += sizeof(code_header->defs.length);
211 size += sizeof(code_header->globals.length);
212 size += sizeof(code_header->fields.length);
213 size += sizeof(code_header->statements.length);
214 size += sizeof(code->linenums[0]) * vec_size(code->linenums);
215 size += sizeof(code->columnnums[0]) * vec_size(code->columnnums);
217 size += sizeof(prog_header_t);
218 size += sizeof(prog_section_statement_t) * vec_size(code->statements);
219 size += sizeof(prog_section_def_t) * vec_size(code->defs);
220 size += sizeof(prog_section_field_t) * vec_size(code->fields);
221 size += sizeof(prog_section_function_t) * vec_size(code->functions);
222 size += sizeof(int32_t) * vec_size(code->globals);
223 size += 1 * vec_size(code->chars);
228 #define code_size_binary(C, H) code_size_generic((C), (H), false)
229 #define code_size_debug(C, H) code_size_generic((C), (H), true)
231 static void code_create_header(code_t *code, prog_header_t *code_header, const char *filename, const char *lnofile) {
234 code_header->statements.offset = sizeof(prog_header_t);
235 code_header->statements.length = vec_size(code->statements);
236 code_header->defs.offset = code_header->statements.offset + (sizeof(prog_section_statement_t) * vec_size(code->statements));
237 code_header->defs.length = vec_size(code->defs);
238 code_header->fields.offset = code_header->defs.offset + (sizeof(prog_section_def_t) * vec_size(code->defs));
239 code_header->fields.length = vec_size(code->fields);
240 code_header->functions.offset = code_header->fields.offset + (sizeof(prog_section_field_t) * vec_size(code->fields));
241 code_header->functions.length = vec_size(code->functions);
242 code_header->globals.offset = code_header->functions.offset + (sizeof(prog_section_function_t) * vec_size(code->functions));
243 code_header->globals.length = vec_size(code->globals);
244 code_header->strings.offset = code_header->globals.offset + (sizeof(int32_t) * vec_size(code->globals));
245 code_header->strings.length = vec_size(code->chars);
246 code_header->version = 6;
247 code_header->skip = 0;
249 if (OPTS_OPTION_BOOL(OPTION_FORCECRC))
250 code_header->crc16 = OPTS_OPTION_U16(OPTION_FORCED_CRC);
252 code_header->crc16 = code->crc;
253 code_header->entfield = code->entfields;
255 if (OPTS_FLAG(DARKPLACES_STRING_TABLE_BUG)) {
257 vec_push(code->chars, '\0'); /* > */
258 vec_push(code->chars, '\0'); /* = */
259 vec_push(code->chars, '\0'); /* P */
262 /* ensure all data is in LE format */
263 util_swap_header(code_header);
266 * These are not part of the header but we ensure LE format here to save on duplicated
270 util_swap_statements (code->statements);
271 util_swap_defs_fields(code->defs);
272 util_swap_defs_fields(code->fields);
273 util_swap_functions (code->functions);
274 util_swap_globals (code->globals);
276 if (!OPTS_OPTION_BOOL(OPTION_QUIET)) {
278 con_out("writing '%s' and '%s'...\n", filename, lnofile);
280 con_out("writing '%s'\n", filename);
283 if (!OPTS_OPTION_BOOL(OPTION_QUIET) &&
284 !OPTS_OPTION_BOOL(OPTION_PP_ONLY))
287 con_out("\nOptimizations:\n");
288 for (i = 0; i < COUNT_OPTIMIZATIONS; ++i) {
289 if (opts_optimizationcount[i]) {
290 util_optimizationtostr(opts_opt_list[i].name, buffer, sizeof(buffer));
294 (unsigned int)opts_optimizationcount[i]
301 static void code_stats(const char *filename, const char *lnofile, code_t *code, prog_header_t *code_header) {
302 if (OPTS_OPTION_BOOL(OPTION_QUIET) ||
303 OPTS_OPTION_BOOL(OPTION_PP_ONLY))
306 con_out("\nFile statistics:\n");
308 con_out(" name: %s\n", filename);
309 con_out(" size: %u (bytes)\n", code_size_binary(code, code_header));
310 con_out(" crc: 0x%04X\n", code->crc);
314 con_out(" name: %s\n", lnofile);
315 con_out(" size: %u (bytes)\n", code_size_debug(code, code_header));
321 bool code_write(code_t *code, const char *filename, const char *lnofile) {
322 prog_header_t code_header;
325 code_create_header(code, &code_header, filename, lnofile);
328 uint32_t version = 1;
330 fp = fopen(lnofile, "wb");
334 util_endianswap(&version, 1, sizeof(version));
335 util_endianswap(code->linenums, vec_size(code->linenums), sizeof(code->linenums[0]));
336 util_endianswap(code->columnnums, vec_size(code->columnnums), sizeof(code->columnnums[0]));
338 if (fwrite("LNOF", 4, 1, fp) != 1 ||
339 fwrite(&version, sizeof(version), 1, fp) != 1 ||
340 fwrite(&code_header.defs.length, sizeof(code_header.defs.length), 1, fp) != 1 ||
341 fwrite(&code_header.globals.length, sizeof(code_header.globals.length), 1, fp) != 1 ||
342 fwrite(&code_header.fields.length, sizeof(code_header.fields.length), 1, fp) != 1 ||
343 fwrite(&code_header.statements.length, sizeof(code_header.statements.length), 1, fp) != 1 ||
344 fwrite(code->linenums, sizeof(code->linenums[0]), vec_size(code->linenums), fp) != vec_size(code->linenums) ||
345 fwrite(code->columnnums, sizeof(code->columnnums[0]), vec_size(code->columnnums), fp) != vec_size(code->columnnums))
347 con_err("failed to write lno file\n");
354 fp = fopen(filename, "wb");
358 if (1 != fwrite(&code_header, sizeof(prog_header_t) , 1 , fp) ||
359 vec_size(code->statements) != fwrite(code->statements, sizeof(prog_section_statement_t), vec_size(code->statements), fp) ||
360 vec_size(code->defs) != fwrite(code->defs, sizeof(prog_section_def_t) , vec_size(code->defs) , fp) ||
361 vec_size(code->fields) != fwrite(code->fields, sizeof(prog_section_field_t) , vec_size(code->fields) , fp) ||
362 vec_size(code->functions) != fwrite(code->functions, sizeof(prog_section_function_t) , vec_size(code->functions) , fp) ||
363 vec_size(code->globals) != fwrite(code->globals, sizeof(int32_t) , vec_size(code->globals) , fp) ||
364 vec_size(code->chars) != fwrite(code->chars, 1 , vec_size(code->chars) , fp))
371 code_stats(filename, lnofile, code, &code_header);
375 void code_cleanup(code_t *code) {
376 vec_free(code->statements);
377 vec_free(code->linenums);
378 vec_free(code->columnnums);
379 vec_free(code->defs);
380 vec_free(code->fields);
381 vec_free(code->functions);
382 vec_free(code->globals);
383 vec_free(code->chars);
385 util_htdel(code->string_cache);