sm4_parse.cpp revision a531513b06be45868bc4d4f6a9757fe6992ef304
1/************************************************************************** 2 * 3 * Copyright 2010 Luca Barbieri 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 **************************************************************************/ 26 27#include "sm4.h" 28#include "utils.h" 29 30#if 1 31#define check(x) assert(x) 32#define fail(x) assert(0 && (x)) 33#else 34#define check(x) do {if(!(x)) throw(#x);} while(0) 35#define fail(x) throw(x) 36#endif 37 38struct sm4_parser 39{ 40 unsigned* tokens; 41 unsigned* tokens_end; 42 sm4_program& program; 43 44 sm4_parser(sm4_program& program, void* p_tokens, unsigned size) 45 : program(program) 46 { 47 tokens = (unsigned*)p_tokens; 48 tokens_end = (unsigned*)((char*)p_tokens + size); 49 } 50 51 /* TODO: byteswap if machine is big endian */ 52 uint32_t read32() 53 { 54 check(tokens < tokens_end); 55 return bswap_le32(*tokens++); 56 } 57 58 template<typename T> 59 void read_token(T* tok) 60 { 61 *(unsigned*)tok = read32(); 62 } 63 64 uint64_t read64() 65 { 66 unsigned a = read32(); 67 unsigned b = read32(); 68 return (uint64_t)a | ((uint64_t)b << 32); 69 } 70 71 void skip(unsigned toskip) 72 { 73 tokens += toskip; 74 } 75 76 void read_op(sm4_op* pop) 77 { 78 sm4_op& op = *pop; 79 sm4_token_operand optok; 80 read_token(&optok); 81 assert(optok.file < SM4_FILE_COUNT); 82 op.swizzle[0] = 0; 83 op.swizzle[1] = 1; 84 op.swizzle[2] = 2; 85 op.swizzle[3] = 3; 86 op.mask = 0xf; 87 switch(optok.comps_enum) 88 { 89 case SM4_OPERAND_COMPNUM_0: 90 op.comps = 0; 91 break; 92 case SM4_OPERAND_COMPNUM_1: 93 op.comps = 1; 94 op.swizzle[1] = op.swizzle[2] = op.swizzle[3] = 0; 95 break; 96 case SM4_OPERAND_COMPNUM_4: 97 op.comps = 4; 98 op.mode = optok.mode; 99 switch(optok.mode) 100 { 101 case SM4_OPERAND_MODE_MASK: 102 op.mask = SM4_OPERAND_SEL_MASK(optok.sel); 103 break; 104 case SM4_OPERAND_MODE_SWIZZLE: 105 op.swizzle[0] = SM4_OPERAND_SEL_SWZ(optok.sel, 0); 106 op.swizzle[1] = SM4_OPERAND_SEL_SWZ(optok.sel, 1); 107 op.swizzle[2] = SM4_OPERAND_SEL_SWZ(optok.sel, 2); 108 op.swizzle[3] = SM4_OPERAND_SEL_SWZ(optok.sel, 3); 109 break; 110 case SM4_OPERAND_MODE_SCALAR: 111 op.swizzle[0] = op.swizzle[1] = op.swizzle[2] = op.swizzle[3] = SM4_OPERAND_SEL_SCALAR(optok.sel); 112 break; 113 } 114 break; 115 case SM4_OPERAND_COMPNUM_N: 116 fail("Unhandled operand component type"); 117 } 118 op.file = (sm4_file)optok.file; 119 op.num_indices = optok.num_indices; 120 121 if(optok.extended) 122 { 123 sm4_token_operand_extended optokext; 124 read_token(&optokext); 125 if(optokext.type == 0) 126 {} 127 else if(optokext.type == 1) 128 { 129 op.neg = optokext.neg; 130 op.abs= optokext.abs; 131 } 132 else 133 fail("Unhandled extended operand token type"); 134 } 135 136 for(unsigned i = 0; i < op.num_indices; ++i) 137 { 138 unsigned repr; 139 if(i == 0) 140 repr = optok.index0_repr; 141 else if(i == 1) 142 repr = optok.index1_repr; 143 else if(i == 2) 144 repr = optok.index2_repr; 145 else 146 fail("Unhandled operand index representation"); 147 op.indices[0].disp = 0; 148 // TODO: is disp supposed to be signed here?? 149 switch(repr) 150 { 151 case SM4_OPERAND_INDEX_REPR_IMM32: 152 op.indices[i].disp = (int32_t)read32(); 153 break; 154 case SM4_OPERAND_INDEX_REPR_IMM64: 155 op.indices[i].disp = read64(); 156 break; 157 case SM4_OPERAND_INDEX_REPR_REG: 158relative: 159 op.indices[i].reg.reset(new sm4_op()); 160 read_op(&*op.indices[0].reg); 161 break; 162 case SM4_OPERAND_INDEX_REPR_REG_IMM32: 163 op.indices[i].disp = (int32_t)read32(); 164 goto relative; 165 case SM4_OPERAND_INDEX_REPR_REG_IMM64: 166 op.indices[i].disp = read64(); 167 goto relative; 168 } 169 } 170 171 if(op.file == SM4_FILE_IMMEDIATE32) 172 { 173 for(unsigned i = 0; i < op.comps; ++i) 174 op.imm_values[i].i32 = read32(); 175 } 176 else if(op.file == SM4_FILE_IMMEDIATE64) 177 { 178 for(unsigned i = 0; i < op.comps; ++i) 179 op.imm_values[i].i64 = read64(); 180 } 181 } 182 183 void do_parse() 184 { 185 read_token(&program.version); 186 187 unsigned lentok = read32(); 188 tokens_end = tokens - 2 + lentok; 189 190 while(tokens != tokens_end) 191 { 192 sm4_token_instruction insntok; 193 read_token(&insntok); 194 unsigned* insn_end = tokens - 1 + insntok.length; 195 sm4_opcode opcode = (sm4_opcode)insntok.opcode; 196 check(opcode < SM4_OPCODE_COUNT); 197 198 if(opcode == SM4_OPCODE_CUSTOMDATA) 199 { 200 unsigned customlen = read32() - 2; 201 skip(customlen); 202 continue; 203 } 204 205 if((opcode >= SM4_OPCODE_DCL_RESOURCE && opcode <= SM4_OPCODE_DCL_GLOBAL_FLAGS) 206 || (opcode >= SM4_OPCODE_DCL_STREAM && opcode <= SM4_OPCODE_DCL_RESOURCE_STRUCTURED)) 207 { 208 sm4_dcl& dcl = *new sm4_dcl; 209 program.dcls.push_back(&dcl); 210 (sm4_token_instruction&)dcl = insntok; 211 212 sm4_token_instruction_extended exttok; 213 memcpy(&exttok, &insntok, sizeof(exttok)); 214 while(exttok.extended) 215 { 216 read_token(&exttok); 217 } 218 219#define READ_OP_ANY dcl.op.reset(new sm4_op()); read_op(&*dcl.op); 220#define READ_OP(FILE) READ_OP_ANY 221 //check(dcl.op->file == SM4_FILE_##FILE); 222 223 switch(opcode) 224 { 225 case SM4_OPCODE_DCL_GLOBAL_FLAGS: 226 break; 227 case SM4_OPCODE_DCL_RESOURCE: 228 READ_OP(RESOURCE); 229 read_token(&dcl.rrt); 230 break; 231 case SM4_OPCODE_DCL_SAMPLER: 232 READ_OP(SAMPLER); 233 break; 234 case SM4_OPCODE_DCL_INPUT: 235 case SM4_OPCODE_DCL_INPUT_PS: 236 READ_OP(INPUT); 237 break; 238 case SM4_OPCODE_DCL_INPUT_SIV: 239 case SM4_OPCODE_DCL_INPUT_SGV: 240 case SM4_OPCODE_DCL_INPUT_PS_SIV: 241 case SM4_OPCODE_DCL_INPUT_PS_SGV: 242 READ_OP(INPUT); 243 dcl.sv = (sm4_sv)(uint16_t)read32(); 244 break; 245 case SM4_OPCODE_DCL_OUTPUT: 246 READ_OP(OUTPUT); 247 break; 248 case SM4_OPCODE_DCL_OUTPUT_SIV: 249 case SM4_OPCODE_DCL_OUTPUT_SGV: 250 READ_OP(OUTPUT); 251 dcl.sv = (sm4_sv)(uint16_t)read32(); 252 break; 253 case SM4_OPCODE_DCL_INDEX_RANGE: 254 READ_OP_ANY; 255 check(dcl.op->file == SM4_FILE_INPUT || dcl.op->file == SM4_FILE_OUTPUT); 256 dcl.num = read32(); 257 break; 258 case SM4_OPCODE_DCL_TEMPS: 259 dcl.num = read32(); 260 break; 261 case SM4_OPCODE_DCL_INDEXABLE_TEMP: 262 READ_OP(INDEXABLE_TEMP); 263 dcl.indexable_temp.num = read32(); 264 dcl.indexable_temp.comps = read32(); 265 break; 266 case SM4_OPCODE_DCL_CONSTANT_BUFFER: 267 READ_OP(CONSTANT_BUFFER); 268 break; 269 case SM4_OPCODE_DCL_GS_INPUT_PRIMITIVE: 270 case SM4_OPCODE_DCL_GS_OUTPUT_PRIMITIVE_TOPOLOGY: 271 break; 272 case SM4_OPCODE_DCL_MAX_OUTPUT_VERTEX_COUNT: 273 dcl.num = read32(); 274 break; 275 case SM4_OPCODE_DCL_GS_INSTANCE_COUNT: 276 dcl.num = read32(); 277 break; 278 case SM4_OPCODE_DCL_INPUT_CONTROL_POINT_COUNT: 279 case SM4_OPCODE_DCL_OUTPUT_CONTROL_POINT_COUNT: 280 case SM4_OPCODE_DCL_TESS_DOMAIN: 281 case SM4_OPCODE_DCL_TESS_PARTITIONING: 282 case SM4_OPCODE_DCL_TESS_OUTPUT_PRIMITIVE: 283 break; 284 case SM4_OPCODE_DCL_HS_MAX_TESSFACTOR: 285 dcl.f32 = read32(); 286 break; 287 case SM4_OPCODE_DCL_HS_FORK_PHASE_INSTANCE_COUNT: 288 dcl.num = read32(); 289 break; 290 case SM4_OPCODE_DCL_FUNCTION_BODY: 291 dcl.num = read32(); 292 break; 293 case SM4_OPCODE_DCL_FUNCTION_TABLE: 294 dcl.num = read32(); 295 dcl.data = malloc(dcl.num * sizeof(uint32_t)); 296 for(unsigned i = 0; i < dcl.num; ++i) 297 ((uint32_t*)dcl.data)[i] = read32(); 298 break; 299 case SM4_OPCODE_DCL_INTERFACE: 300 dcl.intf.id = read32(); 301 dcl.intf.expected_function_table_length = read32(); 302 { 303 uint32_t v = read32(); 304 dcl.intf.table_length = v & 0xffff; 305 dcl.intf.array_length = v >> 16; 306 } 307 dcl.data = malloc(dcl.intf.table_length * sizeof(uint32_t)); 308 for(unsigned i = 0; i < dcl.intf.table_length; ++i) 309 ((uint32_t*)dcl.data)[i] = read32(); 310 break; 311 case SM4_OPCODE_DCL_THREAD_GROUP: 312 dcl.thread_group_size[0] = read32(); 313 dcl.thread_group_size[1] = read32(); 314 dcl.thread_group_size[2] = read32(); 315 break; 316 case SM4_OPCODE_DCL_UNORDERED_ACCESS_VIEW_TYPED: 317 READ_OP(UNORDERED_ACCESS_VIEW); 318 read_token(&dcl.rrt); 319 break; 320 case SM4_OPCODE_DCL_UNORDERED_ACCESS_VIEW_RAW: 321 READ_OP(UNORDERED_ACCESS_VIEW); 322 break; 323 case SM4_OPCODE_DCL_UNORDERED_ACCESS_VIEW_STRUCTURED: 324 READ_OP(UNORDERED_ACCESS_VIEW); 325 dcl.structured.stride = read32(); 326 break; 327 case SM4_OPCODE_DCL_THREAD_GROUP_SHARED_MEMORY_RAW: 328 READ_OP(THREAD_GROUP_SHARED_MEMORY); 329 dcl.num = read32(); 330 break; 331 case SM4_OPCODE_DCL_THREAD_GROUP_SHARED_MEMORY_STRUCTURED: 332 READ_OP(THREAD_GROUP_SHARED_MEMORY); 333 dcl.structured.stride = read32(); 334 dcl.structured.count = read32(); 335 break; 336 case SM4_OPCODE_DCL_RESOURCE_RAW: 337 READ_OP(RESOURCE); 338 break; 339 case SM4_OPCODE_DCL_RESOURCE_STRUCTURED: 340 READ_OP(RESOURCE); 341 dcl.structured.stride = read32(); 342 break; 343 case SM4_OPCODE_DCL_STREAM: 344 /* TODO: dcl_stream is undocumented: what is it? */ 345 fail("Unhandled dcl_stream since it's undocumented"); 346 default: 347 fail("Unhandled declaration"); 348 } 349 350 check(tokens == insn_end); 351 } 352 else 353 { 354 sm4_insn& insn = *new sm4_insn; 355 program.insns.push_back(&insn); 356 (sm4_token_instruction&)insn = insntok; 357 358 sm4_token_instruction_extended exttok; 359 memcpy(&exttok, &insntok, sizeof(exttok)); 360 while(exttok.extended) 361 { 362 read_token(&exttok); 363 if(exttok.type == SM4_TOKEN_INSTRUCTION_EXTENDED_TYPE_SAMPLE_CONTROLS) 364 { 365 insn.sample_offset[0] = exttok.sample_controls.offset_u; 366 insn.sample_offset[1] = exttok.sample_controls.offset_v; 367 insn.sample_offset[2] = exttok.sample_controls.offset_w; 368 } 369 else if(exttok.type == SM4_TOKEN_INSTRUCTION_EXTENDED_TYPE_RESOURCE_DIM) 370 insn.resource_target = exttok.resource_target.target; 371 else if(exttok.type == SM4_TOKEN_INSTRUCTION_EXTENDED_TYPE_RESOURCE_RETURN_TYPE) 372 { 373 insn.resource_return_type[0] = exttok.resource_return_type.x; 374 insn.resource_return_type[1] = exttok.resource_return_type.y; 375 insn.resource_return_type[2] = exttok.resource_return_type.z; 376 insn.resource_return_type[3] = exttok.resource_return_type.w; 377 } 378 } 379 380 switch(opcode) 381 { 382 case SM4_OPCODE_INTERFACE_CALL: 383 insn.num = read32(); 384 break; 385 default: 386 break; 387 } 388 389 unsigned op_num = 0; 390 while(tokens != insn_end) 391 { 392 check(tokens < insn_end); 393 check(op_num < SM4_MAX_OPS); 394 insn.ops[op_num].reset(new sm4_op); 395 read_op(&*insn.ops[op_num]); 396 ++op_num; 397 } 398 insn.num_ops = op_num; 399 } 400 } 401 } 402 403 const char* parse() 404 { 405 try 406 { 407 do_parse(); 408 return 0; 409 } 410 catch(const char* error) 411 { 412 return error; 413 } 414 } 415}; 416 417sm4_program* sm4_parse(void* tokens, int size) 418{ 419 sm4_program* program = new sm4_program; 420 sm4_parser parser(*program, tokens, size); 421 if(!parser.parse()) 422 return program; 423 delete program; 424 return 0; 425} 426