openvcdiff | 311c714 | 2008-08-26 19:29:25 +0000 | [diff] [blame] | 1 | // Copyright 2008 Google Inc. |
| 2 | // Author: Lincoln Smith |
| 3 | // |
| 4 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | // you may not use this file except in compliance with the License. |
| 6 | // You may obtain a copy of the License at |
| 7 | // |
| 8 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | // |
| 10 | // Unless required by applicable law or agreed to in writing, software |
| 11 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | // See the License for the specific language governing permissions and |
| 14 | // limitations under the License. |
| 15 | // |
| 16 | // Unit tests for the class VCDiffCodeTableReader, found in decodetable.h. |
| 17 | |
| 18 | #include <config.h> |
| 19 | #include "decodetable.h" |
| 20 | #include <stdint.h> // int32_t |
| 21 | #include <vector> |
| 22 | #include "addrcache.h" |
| 23 | #include "codetable.h" |
| 24 | #include "testing.h" |
| 25 | #include "varint_bigendian.h" |
| 26 | |
| 27 | namespace open_vcdiff { |
| 28 | namespace { |
| 29 | |
| 30 | class DecodeTableTest : public testing::Test { |
| 31 | protected: |
| 32 | DecodeTableTest() |
| 33 | : instructions_and_sizes_(instruction_buffer_size), |
| 34 | found_size_(0), |
| 35 | found_mode_(0) { |
| 36 | instructions_and_sizes_ptr_ = &instructions_and_sizes_[0]; |
| 37 | reader_.Init(&instructions_and_sizes_ptr_, |
| 38 | instructions_and_sizes_ptr_ + instruction_buffer_size); |
| 39 | } |
| 40 | |
| 41 | static void AddExerciseOpcode(unsigned char inst1, |
| 42 | unsigned char mode1, |
| 43 | unsigned char size1, |
| 44 | unsigned char inst2, |
| 45 | unsigned char mode2, |
| 46 | unsigned char size2, |
| 47 | int opcode) { |
| 48 | g_exercise_code_table_->inst1[opcode] = inst1; |
| 49 | g_exercise_code_table_->mode1[opcode] = mode1; |
| 50 | g_exercise_code_table_->size1[opcode] = (inst1 == VCD_NOOP) ? 0 : size1; |
| 51 | g_exercise_code_table_->inst2[opcode] = inst2; |
| 52 | g_exercise_code_table_->mode2[opcode] = mode2; |
| 53 | g_exercise_code_table_->size2[opcode] = (inst2 == VCD_NOOP) ? 0 : size2; |
| 54 | } |
| 55 | |
| 56 | static void SetUpTestCase() { |
| 57 | g_exercise_code_table_ = new VCDiffCodeTableData; |
| 58 | int opcode = 0; |
| 59 | for (unsigned char inst_mode1 = 0; |
| 60 | inst_mode1 <= VCD_LAST_INSTRUCTION_TYPE + kLastExerciseMode; |
| 61 | ++inst_mode1) { |
| 62 | unsigned char inst1 = inst_mode1; |
| 63 | unsigned char mode1 = 0; |
| 64 | if (inst_mode1 > VCD_COPY) { |
| 65 | inst1 = VCD_COPY; |
| 66 | mode1 = inst_mode1 - VCD_COPY; |
| 67 | } |
| 68 | for (unsigned char inst_mode2 = 0; |
| 69 | inst_mode2 <= VCD_LAST_INSTRUCTION_TYPE + kLastExerciseMode; |
| 70 | ++inst_mode2) { |
| 71 | unsigned char inst2 = inst_mode2; |
| 72 | unsigned char mode2 = 0; |
| 73 | if (inst_mode2 > VCD_COPY) { |
| 74 | inst2 = VCD_COPY; |
| 75 | mode2 = inst_mode2 - VCD_COPY; |
| 76 | } |
| 77 | AddExerciseOpcode(inst1, mode1, 0, inst2, mode2, 0, opcode++); |
| 78 | AddExerciseOpcode(inst1, mode1, 0, inst2, mode2, 255, opcode++); |
| 79 | AddExerciseOpcode(inst1, mode1, 255, inst2, mode2, 0, opcode++); |
| 80 | AddExerciseOpcode(inst1, mode1, 255, inst2, mode2, 255, opcode++); |
| 81 | } |
| 82 | } |
openvcdiff | d184578 | 2009-03-20 21:56:15 +0000 | [diff] [blame] | 83 | CHECK_EQ(VCDiffCodeTableData::kCodeTableSize, opcode); |
openvcdiff | 311c714 | 2008-08-26 19:29:25 +0000 | [diff] [blame] | 84 | EXPECT_TRUE(VCDiffCodeTableData::kDefaultCodeTableData.Validate()); |
| 85 | EXPECT_TRUE(g_exercise_code_table_->Validate(kLastExerciseMode)); |
| 86 | } |
| 87 | |
| 88 | static void TearDownTestCase() { |
| 89 | delete g_exercise_code_table_; |
| 90 | } |
| 91 | |
| 92 | void VerifyInstModeSize(unsigned char inst, |
| 93 | unsigned char mode, |
| 94 | unsigned char size, |
| 95 | unsigned char opcode) { |
| 96 | if (inst == VCD_NOOP) return; // GetNextInstruction skips NOOPs |
| 97 | int32_t found_size = 0; |
| 98 | unsigned char found_mode = 0; |
| 99 | unsigned char found_inst = reader_.GetNextInstruction(&found_size, |
| 100 | &found_mode); |
| 101 | EXPECT_EQ(inst, found_inst); |
| 102 | EXPECT_EQ(mode, found_mode); |
| 103 | if (size == 0) { |
| 104 | EXPECT_EQ(1000 + opcode, found_size); |
| 105 | } else { |
| 106 | EXPECT_EQ(size, found_size); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | void VerifyInstModeSize1(unsigned char inst, |
| 111 | unsigned char mode, |
| 112 | unsigned char size, |
| 113 | unsigned char opcode) { |
| 114 | if (inst == VCD_NOOP) size = 0; |
| 115 | EXPECT_EQ(g_exercise_code_table_->inst1[opcode], inst); |
| 116 | EXPECT_EQ(g_exercise_code_table_->mode1[opcode], mode); |
| 117 | EXPECT_EQ(g_exercise_code_table_->size1[opcode], size); |
| 118 | VerifyInstModeSize(inst, mode, size, opcode); |
| 119 | } |
| 120 | |
| 121 | void VerifyInstModeSize2(unsigned char inst, |
| 122 | unsigned char mode, |
| 123 | unsigned char size, |
| 124 | unsigned char opcode) { |
| 125 | if (inst == VCD_NOOP) size = 0; |
| 126 | EXPECT_EQ(g_exercise_code_table_->inst2[opcode], inst); |
| 127 | EXPECT_EQ(g_exercise_code_table_->mode2[opcode], mode); |
| 128 | EXPECT_EQ(g_exercise_code_table_->size2[opcode], size); |
| 129 | VerifyInstModeSize(inst, mode, size, opcode); |
| 130 | } |
| 131 | |
| 132 | // This value is designed so that the total number of inst values and modes |
| 133 | // will equal 8 (VCD_NOOP, VCD_ADD, VCD_RUN, VCD_COPY modes 0 - 4). |
| 134 | // Eight combinations of inst and mode, times two possible size values, |
| 135 | // squared (because there are two instructions per opcode), makes |
| 136 | // exactly 256 possible instruction combinations, which fits kCodeTableSize |
| 137 | // (the number of opcodes in the table.) |
| 138 | static const int kLastExerciseMode = 4; |
| 139 | |
| 140 | // The buffer size (in bytes) needed to store kCodeTableSize opcodes plus |
| 141 | // up to kCodeTableSize VarintBE-encoded size values. |
| 142 | static const int instruction_buffer_size; |
| 143 | |
| 144 | // A code table that exercises as many combinations as possible: |
| 145 | // 2 instructions, each is a NOOP, ADD, RUN, or one of 5 copy modes |
| 146 | // (== 8 total combinations of inst and mode), and each has |
| 147 | // size == 0 or 255 (2 possibilities.) |
| 148 | static VCDiffCodeTableData* g_exercise_code_table_; |
| 149 | |
| 150 | VCDiffCodeTableReader reader_; |
| 151 | |
| 152 | // A buffer to which instructions and sizes will be added manually |
| 153 | // in order to exercise VCDiffCodeTableReader. |
| 154 | std::vector<char> instructions_and_sizes_; |
| 155 | |
| 156 | // The buffer pointer used by the VCDiffCodeTableReader. |
| 157 | const char* instructions_and_sizes_ptr_; |
| 158 | |
| 159 | // The size and mode returned by GetNextInstruction(). |
| 160 | int32_t found_size_; |
| 161 | unsigned char found_mode_; |
| 162 | }; |
| 163 | |
| 164 | VCDiffCodeTableData* DecodeTableTest::g_exercise_code_table_ = NULL; |
| 165 | |
| 166 | const int DecodeTableTest::instruction_buffer_size = |
| 167 | VCDiffCodeTableData::kCodeTableSize * |
| 168 | (1 + (VarintBE<VCDAddress>::kMaxBytes)); |
| 169 | |
| 170 | TEST_F(DecodeTableTest, ReadAdd) { |
| 171 | instructions_and_sizes_[0] = 1; |
| 172 | VarintBE<VCDAddress>::Encode(257, &instructions_and_sizes_[1]); |
| 173 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 174 | &found_mode_); |
| 175 | EXPECT_EQ(VCD_ADD, found_inst); |
| 176 | EXPECT_EQ(257, found_size_); |
| 177 | EXPECT_EQ(0, found_mode_); |
| 178 | } |
| 179 | |
| 180 | TEST_F(DecodeTableTest, ReadRun) { |
| 181 | instructions_and_sizes_[0] = 0; |
| 182 | VarintBE<VCDAddress>::Encode(111, &instructions_and_sizes_[1]); |
| 183 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 184 | &found_mode_); |
| 185 | EXPECT_EQ(VCD_RUN, found_inst); |
| 186 | EXPECT_EQ(111, found_size_); |
| 187 | EXPECT_EQ(0, found_mode_); |
| 188 | } |
| 189 | |
| 190 | TEST_F(DecodeTableTest, ReadCopy) { |
| 191 | instructions_and_sizes_[0] = 58; |
| 192 | instructions_and_sizes_[1] = 0; |
| 193 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 194 | &found_mode_); |
| 195 | EXPECT_EQ(VCD_COPY, found_inst); |
| 196 | EXPECT_EQ(10, found_size_); |
| 197 | EXPECT_EQ(2, found_mode_); |
| 198 | } |
| 199 | |
| 200 | TEST_F(DecodeTableTest, ReadAddCopy) { |
| 201 | instructions_and_sizes_[0] = 175; |
| 202 | instructions_and_sizes_[1] = 0; |
| 203 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 204 | &found_mode_); |
| 205 | EXPECT_EQ(VCD_ADD, found_inst); |
| 206 | EXPECT_EQ(1, found_size_); |
| 207 | EXPECT_EQ(0, found_mode_); |
| 208 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 209 | EXPECT_EQ(VCD_COPY, found_inst); |
| 210 | EXPECT_EQ(4, found_size_); |
| 211 | EXPECT_EQ(1, found_mode_); |
| 212 | } |
| 213 | |
| 214 | TEST_F(DecodeTableTest, ReadCopyAdd) { |
| 215 | instructions_and_sizes_[0] = 255; |
| 216 | instructions_and_sizes_[1] = 0; |
| 217 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 218 | &found_mode_); |
| 219 | EXPECT_EQ(VCD_COPY, found_inst); |
| 220 | EXPECT_EQ(4, found_size_); |
| 221 | EXPECT_EQ(8, found_mode_); |
| 222 | found_mode_ = 0; |
| 223 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 224 | EXPECT_EQ(VCD_ADD, found_inst); |
| 225 | EXPECT_EQ(1, found_size_); |
| 226 | EXPECT_EQ(0, found_mode_); |
| 227 | } |
| 228 | |
| 229 | TEST_F(DecodeTableTest, UnGetAdd) { |
| 230 | instructions_and_sizes_[0] = 1; |
| 231 | instructions_and_sizes_[1] = 255; |
| 232 | VarintBE<VCDAddress>::Encode(257, &instructions_and_sizes_[1]); |
| 233 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 234 | &found_mode_); |
| 235 | EXPECT_EQ(VCD_ADD, found_inst); |
| 236 | EXPECT_EQ(257, found_size_); |
| 237 | EXPECT_EQ(0, found_mode_); |
| 238 | reader_.UnGetInstruction(); |
| 239 | found_size_ = 0; |
| 240 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 241 | EXPECT_EQ(VCD_ADD, found_inst); |
| 242 | EXPECT_EQ(257, found_size_); |
| 243 | EXPECT_EQ(0, found_mode_); |
| 244 | } |
| 245 | |
| 246 | TEST_F(DecodeTableTest, UnGetCopy) { |
| 247 | instructions_and_sizes_[0] = 58; |
| 248 | instructions_and_sizes_[1] = 0; |
| 249 | instructions_and_sizes_[2] = 255; |
| 250 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 251 | &found_mode_); |
| 252 | EXPECT_EQ(VCD_COPY, found_inst); |
| 253 | EXPECT_EQ(10, found_size_); |
| 254 | EXPECT_EQ(2, found_mode_); |
| 255 | reader_.UnGetInstruction(); |
| 256 | found_size_ = 0; |
| 257 | found_mode_ = 0; |
| 258 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 259 | EXPECT_EQ(VCD_COPY, found_inst); |
| 260 | EXPECT_EQ(10, found_size_); |
| 261 | EXPECT_EQ(2, found_mode_); |
| 262 | } |
| 263 | |
| 264 | TEST_F(DecodeTableTest, UnGetCopyAdd) { |
| 265 | instructions_and_sizes_[0] = 255; |
| 266 | instructions_and_sizes_[1] = 0; |
| 267 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 268 | &found_mode_); |
| 269 | EXPECT_EQ(VCD_COPY, found_inst); |
| 270 | EXPECT_EQ(4, found_size_); |
| 271 | EXPECT_EQ(8, found_mode_); |
| 272 | reader_.UnGetInstruction(); |
| 273 | found_mode_ = 0; |
| 274 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 275 | EXPECT_EQ(VCD_COPY, found_inst); |
| 276 | EXPECT_EQ(4, found_size_); |
| 277 | EXPECT_EQ(8, found_mode_); |
| 278 | found_mode_ = 0; |
| 279 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 280 | EXPECT_EQ(VCD_ADD, found_inst); |
| 281 | EXPECT_EQ(1, found_size_); |
| 282 | EXPECT_EQ(0, found_mode_); |
| 283 | } |
| 284 | |
| 285 | TEST_F(DecodeTableTest, UnGetTwice) { |
| 286 | instructions_and_sizes_[0] = 255; |
| 287 | instructions_and_sizes_[1] = 0; |
| 288 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 289 | &found_mode_); |
| 290 | EXPECT_EQ(VCD_COPY, found_inst); |
| 291 | EXPECT_EQ(4, found_size_); |
| 292 | EXPECT_EQ(8, found_mode_); |
| 293 | reader_.UnGetInstruction(); |
| 294 | reader_.UnGetInstruction(); |
| 295 | found_mode_ = 0; |
| 296 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 297 | EXPECT_EQ(VCD_COPY, found_inst); |
| 298 | EXPECT_EQ(4, found_size_); |
| 299 | EXPECT_EQ(8, found_mode_); |
| 300 | found_mode_ = 0; |
| 301 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 302 | EXPECT_EQ(VCD_ADD, found_inst); |
| 303 | EXPECT_EQ(1, found_size_); |
| 304 | EXPECT_EQ(0, found_mode_); |
| 305 | } |
| 306 | |
| 307 | TEST_F(DecodeTableTest, UnGetBeforeGet) { |
| 308 | instructions_and_sizes_[0] = 255; |
| 309 | instructions_and_sizes_[1] = 0; |
| 310 | reader_.UnGetInstruction(); |
| 311 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 312 | &found_mode_); |
| 313 | EXPECT_EQ(VCD_COPY, found_inst); |
| 314 | EXPECT_EQ(4, found_size_); |
| 315 | EXPECT_EQ(8, found_mode_); |
| 316 | } |
| 317 | |
| 318 | TEST_F(DecodeTableTest, UnGetAddCopy) { |
| 319 | instructions_and_sizes_[0] = 175; |
| 320 | instructions_and_sizes_[1] = 0; |
| 321 | unsigned char found_inst = reader_.GetNextInstruction(&found_size_, |
| 322 | &found_mode_); |
| 323 | EXPECT_EQ(VCD_ADD, found_inst); |
| 324 | EXPECT_EQ(1, found_size_); |
| 325 | EXPECT_EQ(0, found_mode_); |
| 326 | reader_.UnGetInstruction(); |
| 327 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 328 | EXPECT_EQ(VCD_ADD, found_inst); |
| 329 | EXPECT_EQ(1, found_size_); |
| 330 | EXPECT_EQ(0, found_mode_); |
| 331 | found_inst = reader_.GetNextInstruction(&found_size_, &found_mode_); |
| 332 | EXPECT_EQ(VCD_COPY, found_inst); |
| 333 | EXPECT_EQ(4, found_size_); |
| 334 | EXPECT_EQ(1, found_mode_); |
| 335 | } |
| 336 | |
| 337 | TEST_F(DecodeTableTest, ReReadIncomplete) { |
| 338 | instructions_and_sizes_[0] = 175; // Add(1) + Copy1(4) |
| 339 | instructions_and_sizes_[1] = 1; // Add(0) |
| 340 | instructions_and_sizes_[2] = 111; // with size 111 |
| 341 | instructions_and_sizes_[3] = 255; // Copy8(4) + Add(1) |
| 342 | |
| 343 | reader_.Init(&instructions_and_sizes_ptr_, |
| 344 | instructions_and_sizes_ptr_ + 0); // 0 bytes available |
| 345 | EXPECT_EQ(VCD_INSTRUCTION_END_OF_DATA, |
| 346 | reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 347 | EXPECT_EQ(&instructions_and_sizes_[0], instructions_and_sizes_ptr_); |
| 348 | |
| 349 | reader_.Init(&instructions_and_sizes_ptr_, |
| 350 | instructions_and_sizes_ptr_ + 1); // 1 more byte available |
| 351 | EXPECT_EQ(VCD_ADD, reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 352 | EXPECT_EQ(1, found_size_); |
| 353 | EXPECT_EQ(0, found_mode_); |
| 354 | EXPECT_EQ(VCD_COPY, reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 355 | EXPECT_EQ(4, found_size_); |
| 356 | EXPECT_EQ(1, found_mode_); |
| 357 | EXPECT_EQ(VCD_INSTRUCTION_END_OF_DATA, |
| 358 | reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 359 | EXPECT_EQ(&instructions_and_sizes_[1], instructions_and_sizes_ptr_); |
| 360 | |
| 361 | reader_.Init(&instructions_and_sizes_ptr_, |
| 362 | instructions_and_sizes_ptr_ + 1); // 1 more byte available |
| 363 | // The opcode is available, but the separately encoded size is not |
| 364 | EXPECT_EQ(VCD_INSTRUCTION_END_OF_DATA, |
| 365 | reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 366 | EXPECT_EQ(&instructions_and_sizes_[1], instructions_and_sizes_ptr_); |
| 367 | |
| 368 | reader_.Init(&instructions_and_sizes_ptr_, |
| 369 | instructions_and_sizes_ptr_ + 2); // 2 more bytes available |
| 370 | EXPECT_EQ(VCD_ADD, reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 371 | EXPECT_EQ(111, found_size_); |
| 372 | EXPECT_EQ(0, found_mode_); |
| 373 | EXPECT_EQ(VCD_INSTRUCTION_END_OF_DATA, |
| 374 | reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 375 | EXPECT_EQ(&instructions_and_sizes_[3], instructions_and_sizes_ptr_); |
| 376 | |
| 377 | reader_.Init(&instructions_and_sizes_ptr_, |
| 378 | instructions_and_sizes_ptr_ + 1); // 1 more byte available |
| 379 | EXPECT_EQ(VCD_COPY, reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 380 | EXPECT_EQ(4, found_size_); |
| 381 | EXPECT_EQ(8, found_mode_); |
| 382 | EXPECT_EQ(VCD_ADD, reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 383 | EXPECT_EQ(1, found_size_); |
| 384 | EXPECT_EQ(0, found_mode_); |
| 385 | EXPECT_EQ(VCD_INSTRUCTION_END_OF_DATA, |
| 386 | reader_.GetNextInstruction(&found_size_, &found_mode_)); |
| 387 | EXPECT_EQ(&instructions_and_sizes_[4], instructions_and_sizes_ptr_); |
| 388 | } |
| 389 | |
| 390 | TEST_F(DecodeTableTest, ExerciseCodeTableReader) { |
| 391 | char* instruction_ptr = &instructions_and_sizes_[0]; |
| 392 | for (int opcode = 0; opcode < VCDiffCodeTableData::kCodeTableSize; ++opcode) { |
| 393 | *instruction_ptr = opcode; |
| 394 | ++instruction_ptr; |
| 395 | if ((g_exercise_code_table_->inst1[opcode] != VCD_NOOP) && |
| 396 | (g_exercise_code_table_->size1[opcode] == 0)) { |
| 397 | // A separately-encoded size value |
| 398 | int encoded_size = VarintBE<VCDAddress>::Encode(1000 + opcode, |
| 399 | instruction_ptr); |
| 400 | EXPECT_LT(0, encoded_size); |
| 401 | instruction_ptr += encoded_size; |
| 402 | } |
| 403 | if ((g_exercise_code_table_->inst2[opcode] != VCD_NOOP) && |
| 404 | (g_exercise_code_table_->size2[opcode] == 0)) { |
| 405 | int encoded_size = VarintBE<VCDAddress>::Encode(1000 + opcode, |
| 406 | instruction_ptr); |
| 407 | EXPECT_LT(0, encoded_size); |
| 408 | instruction_ptr += encoded_size; |
| 409 | } |
| 410 | } |
| 411 | EXPECT_TRUE(reader_.UseCodeTable(*g_exercise_code_table_, kLastExerciseMode)); |
| 412 | int opcode = 0; |
| 413 | // This loop has the same bounds as the one in SetUpTestCase. |
| 414 | // Iterate over the instruction types and make sure that the opcodes, |
| 415 | // interpreted in order, return exactly those instruction types. |
| 416 | for (unsigned char inst_mode1 = 0; |
| 417 | inst_mode1 <= VCD_LAST_INSTRUCTION_TYPE + kLastExerciseMode; |
| 418 | ++inst_mode1) { |
| 419 | unsigned char inst1 = inst_mode1; |
| 420 | unsigned char mode1 = 0; |
| 421 | if (inst_mode1 > VCD_COPY) { |
| 422 | inst1 = VCD_COPY; |
| 423 | mode1 = inst_mode1 - VCD_COPY; |
| 424 | } |
| 425 | for (unsigned char inst_mode2 = 0; |
| 426 | inst_mode2 <= VCD_LAST_INSTRUCTION_TYPE + kLastExerciseMode; |
| 427 | ++inst_mode2) { |
| 428 | unsigned char inst2 = inst_mode2; |
| 429 | unsigned char mode2 = 0; |
| 430 | if (inst_mode2 > VCD_COPY) { |
| 431 | inst2 = VCD_COPY; |
| 432 | mode2 = inst_mode2 - VCD_COPY; |
| 433 | } |
| 434 | VerifyInstModeSize1(inst1, mode1, 0, opcode); |
| 435 | VerifyInstModeSize2(inst2, mode2, 0, opcode); |
| 436 | ++opcode; |
| 437 | VerifyInstModeSize1(inst1, mode1, 0, opcode); |
| 438 | VerifyInstModeSize2(inst2, mode2, 255, opcode); |
| 439 | ++opcode; |
| 440 | VerifyInstModeSize1(inst1, mode1, 255, opcode); |
| 441 | VerifyInstModeSize2(inst2, mode2, 0, opcode); |
| 442 | ++opcode; |
| 443 | VerifyInstModeSize1(inst1, mode1, 255, opcode); |
| 444 | VerifyInstModeSize2(inst2, mode2, 255, opcode); |
| 445 | ++opcode; |
| 446 | } |
| 447 | } |
openvcdiff | d184578 | 2009-03-20 21:56:15 +0000 | [diff] [blame] | 448 | CHECK_EQ(VCDiffCodeTableData::kCodeTableSize, opcode); |
openvcdiff | 311c714 | 2008-08-26 19:29:25 +0000 | [diff] [blame] | 449 | } |
| 450 | |
| 451 | } // unnamed namespace |
| 452 | } // namespace open_vcdiff |