florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 1 | /* -*- mode: C; c-basic-offset: 3; -*- */ |
| 2 | |
florian | 5aa9d1e | 2015-09-22 07:21:50 +0000 | [diff] [blame] | 3 | /* |
| 4 | This file is part of MemCheck, a heavyweight Valgrind tool for |
| 5 | detecting memory errors. |
| 6 | |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame^] | 7 | Copyright (C) 2012-2017 Florian Krohm |
florian | 5aa9d1e | 2015-09-22 07:21:50 +0000 | [diff] [blame] | 8 | |
| 9 | This program is free software; you can redistribute it and/or |
| 10 | modify it under the terms of the GNU General Public License as |
| 11 | published by the Free Software Foundation; either version 2 of the |
| 12 | License, or (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, but |
| 15 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 22 | 02111-1307, USA. |
| 23 | |
| 24 | The GNU General Public License is contained in the file COPYING. |
| 25 | */ |
| 26 | |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 27 | #include <assert.h> |
| 28 | #include <string.h> // memset |
| 29 | #include "vtest.h" |
| 30 | |
| 31 | |
| 32 | /* A convenience function to compute either v1 & ~v2 & val2 or |
| 33 | v1 & ~v2 & ~val2 depending on INVERT_VAL2. */ |
| 34 | static vbits_t |
| 35 | and_combine(vbits_t v1, vbits_t v2, value_t val2, int invert_val2) |
| 36 | { |
| 37 | assert(v1.num_bits == v2.num_bits); |
| 38 | |
| 39 | vbits_t new = { .num_bits = v2.num_bits }; |
| 40 | |
| 41 | if (invert_val2) { |
| 42 | switch (v2.num_bits) { |
| 43 | case 8: val2.u8 = ~val2.u8 & 0xff; break; |
| 44 | case 16: val2.u16 = ~val2.u16 & 0xffff; break; |
| 45 | case 32: val2.u32 = ~val2.u32; break; |
| 46 | case 64: val2.u64 = ~val2.u64; break; |
| 47 | default: |
| 48 | panic(__func__); |
| 49 | } |
| 50 | } |
| 51 | |
| 52 | switch (v2.num_bits) { |
| 53 | case 8: |
| 54 | new.bits.u8 = (v1.bits.u8 & ~v2.bits.u8 & val2.u8) & 0xff; |
| 55 | break; |
| 56 | case 16: |
| 57 | new.bits.u16 = (v1.bits.u16 & ~v2.bits.u16 & val2.u16) & 0xffff; |
| 58 | break; |
| 59 | case 32: |
| 60 | new.bits.u32 = (v1.bits.u32 & ~v2.bits.u32 & val2.u32); |
| 61 | break; |
| 62 | case 64: |
| 63 | new.bits.u64 = (v1.bits.u64 & ~v2.bits.u64 & val2.u64); |
| 64 | break; |
| 65 | default: |
| 66 | panic(__func__); |
| 67 | } |
| 68 | return new; |
| 69 | } |
| 70 | |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 71 | /* Check the result of a binary operation. */ |
| 72 | static void |
| 73 | check_result_for_binary(const irop_t *op, const test_data_t *data) |
| 74 | { |
| 75 | const opnd_t *result = &data->result; |
| 76 | const opnd_t *opnd1 = &data->opnds[0]; |
| 77 | const opnd_t *opnd2 = &data->opnds[1]; |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 78 | opnd_t tmp; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 79 | vbits_t expected_vbits; |
| 80 | |
| 81 | /* Only handle those undef-kinds that actually occur. */ |
| 82 | switch (op->undef_kind) { |
| 83 | case UNDEF_NONE: |
| 84 | expected_vbits = defined_vbits(result->vbits.num_bits); |
| 85 | break; |
| 86 | |
| 87 | case UNDEF_ALL: |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 88 | /* Iop_ShlD64, Iop_ShrD64, Iop_ShlD128, Iop_ShrD128 have |
| 89 | * one immediate operand in operand 2. |
| 90 | */ |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 91 | expected_vbits = undefined_vbits(result->vbits.num_bits); |
| 92 | break; |
| 93 | |
| 94 | case UNDEF_LEFT: |
| 95 | // LEFT with respect to the leftmost 1-bit in both operands |
| 96 | expected_vbits = left_vbits(or_vbits(opnd1->vbits, opnd2->vbits), |
| 97 | result->vbits.num_bits); |
| 98 | break; |
| 99 | |
| 100 | case UNDEF_SAME: |
| 101 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 102 | assert(opnd1->vbits.num_bits == result->vbits.num_bits); |
| 103 | |
| 104 | // SAME with respect to the 1-bits in both operands |
| 105 | expected_vbits = or_vbits(opnd1->vbits, opnd2->vbits); |
| 106 | break; |
| 107 | |
| 108 | case UNDEF_CONCAT: |
| 109 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 110 | assert(result->vbits.num_bits == 2 * opnd1->vbits.num_bits); |
| 111 | expected_vbits = concat_vbits(opnd1->vbits, opnd2->vbits); |
| 112 | break; |
| 113 | |
| 114 | case UNDEF_SHL: |
| 115 | /* If any bit in the 2nd operand is undefined, so are all bits |
| 116 | of the result. */ |
| 117 | if (! completely_defined_vbits(opnd2->vbits)) { |
| 118 | expected_vbits = undefined_vbits(result->vbits.num_bits); |
| 119 | } else { |
| 120 | assert(opnd2->vbits.num_bits == 8); |
| 121 | unsigned shift_amount = opnd2->value.u8; |
| 122 | |
| 123 | expected_vbits = shl_vbits(opnd1->vbits, shift_amount); |
| 124 | } |
| 125 | break; |
| 126 | |
| 127 | case UNDEF_SHR: |
| 128 | /* If any bit in the 2nd operand is undefined, so are all bits |
| 129 | of the result. */ |
| 130 | if (! completely_defined_vbits(opnd2->vbits)) { |
| 131 | expected_vbits = undefined_vbits(result->vbits.num_bits); |
| 132 | } else { |
| 133 | assert(opnd2->vbits.num_bits == 8); |
| 134 | unsigned shift_amount = opnd2->value.u8; |
| 135 | |
| 136 | expected_vbits = shr_vbits(opnd1->vbits, shift_amount); |
| 137 | } |
| 138 | break; |
| 139 | |
| 140 | case UNDEF_SAR: |
| 141 | /* If any bit in the 2nd operand is undefined, so are all bits |
| 142 | of the result. */ |
| 143 | if (! completely_defined_vbits(opnd2->vbits)) { |
| 144 | expected_vbits = undefined_vbits(result->vbits.num_bits); |
| 145 | } else { |
| 146 | assert(opnd2->vbits.num_bits == 8); |
| 147 | unsigned shift_amount = opnd2->value.u8; |
| 148 | |
| 149 | expected_vbits = sar_vbits(opnd1->vbits, shift_amount); |
| 150 | } |
| 151 | break; |
| 152 | |
| 153 | case UNDEF_AND: { |
| 154 | /* Let v1, v2 be the V-bits of the 1st and 2nd operand, respectively |
| 155 | Let b1, b2 be the actual value of the 1st and 2nd operand, respect. |
| 156 | And output bit is undefined (i.e. its V-bit == 1), iff |
| 157 | (1) (v1 == 1) && (v2 == 1) OR |
| 158 | (2) (v1 == 1) && (v2 == 0 && b2 == 1) OR |
| 159 | (3) (v2 == 1) && (v1 == 0 && b1 == 1) |
| 160 | */ |
| 161 | vbits_t term1, term2, term3; |
| 162 | term1 = and_vbits(opnd1->vbits, opnd2->vbits); |
| 163 | term2 = and_combine(opnd1->vbits, opnd2->vbits, opnd2->value, 0); |
| 164 | term3 = and_combine(opnd2->vbits, opnd1->vbits, opnd1->value, 0); |
| 165 | expected_vbits = or_vbits(term1, or_vbits(term2, term3)); |
| 166 | break; |
| 167 | } |
| 168 | |
| 169 | case UNDEF_OR: { |
| 170 | /* Let v1, v2 be the V-bits of the 1st and 2nd operand, respectively |
| 171 | Let b1, b2 be the actual value of the 1st and 2nd operand, respect. |
| 172 | And output bit is undefined (i.e. its V-bit == 1), iff |
| 173 | (1) (v1 == 1) && (v2 == 1) OR |
| 174 | (2) (v1 == 1) && (v2 == 0 && b2 == 0) OR |
| 175 | (3) (v2 == 1) && (v1 == 0 && b1 == 0) |
| 176 | */ |
| 177 | vbits_t term1, term2, term3; |
| 178 | term1 = and_vbits(opnd1->vbits, opnd2->vbits); |
| 179 | term2 = and_combine(opnd1->vbits, opnd2->vbits, opnd2->value, 1); |
| 180 | term3 = and_combine(opnd2->vbits, opnd1->vbits, opnd1->value, 1); |
| 181 | expected_vbits = or_vbits(term1, or_vbits(term2, term3)); |
| 182 | break; |
| 183 | } |
| 184 | |
carll | 686b17f | 2012-11-16 18:58:08 +0000 | [diff] [blame] | 185 | case UNDEF_ORD: |
| 186 | /* Set expected_vbits for the Iop_CmpORD category of iops. |
| 187 | * If any of the input bits is undefined the least significant |
| 188 | * three bits in the result will be set, i.e. 0xe. |
| 189 | */ |
| 190 | expected_vbits = cmpord_vbits(opnd1->vbits.num_bits, |
| 191 | opnd2->vbits.num_bits); |
| 192 | break; |
| 193 | |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 194 | case UNDEF_ALL_64x2: |
| 195 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 196 | expected_vbits = |
| 197 | undefined_vbits_BxE(64, 2, |
| 198 | or_vbits(opnd1->vbits, opnd2->vbits)); |
| 199 | break; |
| 200 | |
| 201 | case UNDEF_ALL_32x4: |
| 202 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 203 | expected_vbits = |
| 204 | undefined_vbits_BxE(32, 4, |
| 205 | or_vbits(opnd1->vbits, opnd2->vbits)); |
| 206 | break; |
| 207 | |
| 208 | case UNDEF_ALL_16x8: |
| 209 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 210 | expected_vbits = |
| 211 | undefined_vbits_BxE(16, 8, |
| 212 | or_vbits(opnd1->vbits, opnd2->vbits)); |
| 213 | break; |
| 214 | |
| 215 | case UNDEF_ALL_8x16: |
| 216 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 217 | expected_vbits = |
| 218 | undefined_vbits_BxE(8, 16, |
| 219 | or_vbits(opnd1->vbits, opnd2->vbits)); |
| 220 | break; |
| 221 | |
| 222 | case UNDEF_ALL_32x4_EVEN: |
| 223 | /* Only even input bytes are used, result can be twice as wide */ |
| 224 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 225 | expected_vbits = |
| 226 | undefined_vbits_BxE(64, 2, |
| 227 | undefined_vbits_128_even_element(32, 4, |
| 228 | or_vbits(opnd1->vbits, opnd2->vbits))); |
| 229 | break; |
| 230 | |
| 231 | case UNDEF_ALL_16x8_EVEN: |
| 232 | /* Only even input bytes are used, result can be twice as wide */ |
| 233 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 234 | expected_vbits = |
| 235 | undefined_vbits_BxE(32, 4, |
| 236 | undefined_vbits_128_even_element(16, 8, |
| 237 | or_vbits(opnd1->vbits, opnd2->vbits))); |
| 238 | break; |
| 239 | |
| 240 | case UNDEF_ALL_8x16_EVEN: |
| 241 | /* Only even input bytes are used, result can be twice as wide */ |
| 242 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 243 | expected_vbits = |
| 244 | undefined_vbits_BxE(16, 8, |
| 245 | undefined_vbits_128_even_element(8, 16, |
| 246 | or_vbits(opnd1->vbits, opnd2->vbits))); |
| 247 | break; |
| 248 | |
| 249 | case UNDEF_64x2_ROTATE: |
| 250 | /* Rotate left each element in opnd1 by the amount in the corresponding |
| 251 | * element of opnd2. |
| 252 | */ |
| 253 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 254 | /* Setup the tmp to match what the vbit tester seems to use. I can't |
| 255 | * use opnd2-value since valgrind doesn't think it has been set. |
| 256 | */ |
| 257 | tmp.value.u128[0] = -1; |
| 258 | tmp.value.u128[1] = -1; |
| 259 | /* Calculate expected for the first operand when it is shifted. |
| 260 | * If any of the vbits are set for the shift field of the second operand |
| 261 | * then the result of the expected result for that element is all 1's. |
| 262 | */ |
| 263 | expected_vbits = or_vbits(undefined_vbits_BxE_rotate(64, 2, opnd1->vbits, |
| 264 | tmp.value), |
| 265 | undefined_vbits_BxE(64, 2, opnd2->vbits)); |
| 266 | break; |
| 267 | |
| 268 | case UNDEF_32x4_ROTATE: |
| 269 | /* Rotate left each element in opnd1 by the amount in the corresponding |
| 270 | * element of opnd2. |
| 271 | */ |
| 272 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 273 | expected_vbits = undefined_vbits_BxE_rotate(32, 4, opnd1->vbits, |
| 274 | opnd2->value); |
| 275 | break; |
| 276 | |
| 277 | case UNDEF_16x8_ROTATE: |
| 278 | /* Rotate left each element in opnd1 by the amount in the corresponding |
| 279 | * element of opnd2. |
| 280 | */ |
| 281 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 282 | expected_vbits = undefined_vbits_BxE_rotate(16, 8, opnd1->vbits, |
| 283 | opnd2->value); |
| 284 | break; |
| 285 | |
| 286 | case UNDEF_8x16_ROTATE: |
| 287 | /* Rotate left each element in opnd1 by the amount in the corresponding |
| 288 | * element of opnd2. |
| 289 | */ |
| 290 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 291 | expected_vbits = undefined_vbits_BxE_rotate(16, 8, opnd1->vbits, |
| 292 | opnd2->value); |
| 293 | break; |
| 294 | |
| 295 | case UNDEF_SOME: |
| 296 | /* The result for the Iop_SHA256 and Iop_SHA256 is a secure hash. If |
| 297 | * one of the input bits is not defined there must be atleast one |
| 298 | * undefined bit in the output. Which bit and how many depends on |
| 299 | * which bit is undefined. Don't know the secure hash algorithm so |
| 300 | * we can only make sure at least one of the result bits is set. |
| 301 | * |
| 302 | * The Iop_SHA256, Iop_SHA512 iops have one immediate value in the |
| 303 | * second operand. |
| 304 | */ |
| 305 | expected_vbits.num_bits = result->vbits.num_bits; |
| 306 | |
| 307 | if ((result->vbits.bits.u128[0] != 0) || |
| 308 | (result->vbits.bits.u128[1] != 0)) { |
| 309 | expected_vbits.bits.u128[0] = result->vbits.bits.u128[0]; |
| 310 | expected_vbits.bits.u128[1] = result->vbits.bits.u128[1]; |
| 311 | |
| 312 | } else { |
| 313 | /* The input had at least one vbit set but the result doesn't have any |
| 314 | * bit set. Set them all so we will trigger the error on the call |
| 315 | * to complain(). |
| 316 | */ |
| 317 | expected_vbits.bits.u128[0] = ~0x0ULL; |
| 318 | expected_vbits.bits.u128[1] = ~0x0ULL; |
| 319 | } |
| 320 | break; |
| 321 | |
| 322 | case UNDEF_NARROW256_AtoB: |
| 323 | assert(opnd1->vbits.num_bits == opnd2->vbits.num_bits); |
| 324 | switch(op->op) { |
| 325 | case Iop_NarrowBin64to32x4: |
| 326 | expected_vbits = |
| 327 | undefined_vbits_Narrow256_AtoB(64, 32, opnd1->vbits, opnd1->value, |
| 328 | opnd2->vbits, opnd2->value, |
| 329 | False); |
| 330 | break; |
| 331 | case Iop_QNarrowBin64Sto32Sx4: |
| 332 | expected_vbits = |
| 333 | undefined_vbits_Narrow256_AtoB(64, 32, opnd1->vbits, opnd1->value, |
| 334 | opnd2->vbits, opnd2->value, |
| 335 | True); |
| 336 | break; |
| 337 | case Iop_QNarrowBin64Uto32Ux4: |
| 338 | expected_vbits = |
| 339 | undefined_vbits_Narrow256_AtoB(64, 32, opnd1->vbits, opnd1->value, |
| 340 | opnd2->vbits, opnd2->value, |
| 341 | True); |
| 342 | break; |
| 343 | default: |
| 344 | fprintf(stderr, "ERROR, unknown Iop for UNDEF_NARROW256_AtoB\n"); |
| 345 | panic(__func__); |
| 346 | } |
| 347 | break; |
| 348 | |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 349 | default: |
| 350 | panic(__func__); |
| 351 | } |
| 352 | |
| 353 | if (! equal_vbits(result->vbits, expected_vbits)) |
| 354 | complain(op, data, expected_vbits); |
| 355 | } |
| 356 | |
| 357 | |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 358 | static int |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 359 | test_shift(const irop_t *op, test_data_t *data) |
| 360 | { |
| 361 | unsigned num_input_bits, i; |
| 362 | opnd_t *opnds = data->opnds; |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 363 | int tests_done = 0; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 364 | |
| 365 | /* When testing the 1st operand's undefinedness propagation, |
| 366 | do so with all possible shift amnounts */ |
| 367 | for (unsigned amount = 0; amount < bitsof_irtype(opnds[0].type); ++amount) { |
| 368 | opnds[1].value.u8 = amount; |
| 369 | |
| 370 | // 1st (left) operand |
| 371 | num_input_bits = bitsof_irtype(opnds[0].type); |
| 372 | |
| 373 | for (i = 0; i < num_input_bits; ++i) { |
| 374 | opnds[0].vbits = onehot_vbits(i, bitsof_irtype(opnds[0].type)); |
| 375 | opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| 376 | |
| 377 | valgrind_execute_test(op, data); |
| 378 | |
| 379 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 380 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 381 | } |
| 382 | } |
| 383 | |
| 384 | // 2nd (right) operand |
florian | f74f542 | 2012-09-13 19:41:12 +0000 | [diff] [blame] | 385 | |
| 386 | /* If the operand is an immediate value, there are no v-bits to set. */ |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 387 | if (!op->immediate_index) return tests_done; |
florian | f74f542 | 2012-09-13 19:41:12 +0000 | [diff] [blame] | 388 | |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 389 | num_input_bits = bitsof_irtype(opnds[1].type); |
| 390 | |
| 391 | for (i = 0; i < num_input_bits; ++i) { |
| 392 | opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| 393 | opnds[1].vbits = onehot_vbits(i, bitsof_irtype(opnds[1].type)); |
| 394 | |
| 395 | valgrind_execute_test(op, data); |
| 396 | |
| 397 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 398 | |
| 399 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 400 | } |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 401 | return tests_done; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 402 | } |
| 403 | |
| 404 | |
| 405 | static value_t |
| 406 | all_bits_zero_value(unsigned num_bits) |
| 407 | { |
| 408 | value_t val; |
| 409 | |
| 410 | switch (num_bits) { |
| 411 | case 8: val.u8 = 0; break; |
| 412 | case 16: val.u16 = 0; break; |
| 413 | case 32: val.u32 = 0; break; |
| 414 | case 64: val.u64 = 0; break; |
| 415 | default: |
| 416 | panic(__func__); |
| 417 | } |
| 418 | return val; |
| 419 | } |
| 420 | |
| 421 | |
| 422 | static value_t |
| 423 | all_bits_one_value(unsigned num_bits) |
| 424 | { |
| 425 | value_t val; |
| 426 | |
| 427 | switch (num_bits) { |
| 428 | case 8: val.u8 = 0xff; break; |
| 429 | case 16: val.u16 = 0xffff; break; |
| 430 | case 32: val.u32 = ~0u; break; |
| 431 | case 64: val.u64 = ~0ull; break; |
| 432 | default: |
| 433 | panic(__func__); |
| 434 | } |
| 435 | return val; |
| 436 | } |
| 437 | |
| 438 | |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 439 | static int |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 440 | test_and(const irop_t *op, test_data_t *data) |
| 441 | { |
| 442 | unsigned num_input_bits, bitpos; |
| 443 | opnd_t *opnds = data->opnds; |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 444 | int tests_done = 0; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 445 | |
| 446 | /* Undefinedness does not propagate if the other operand is 0. |
| 447 | Use an all-bits-zero operand and test the other operand in |
| 448 | the usual way (one bit undefined at a time). */ |
| 449 | |
| 450 | // 1st (left) operand variable, 2nd operand all-bits-zero |
| 451 | num_input_bits = bitsof_irtype(opnds[0].type); |
| 452 | |
| 453 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 454 | opnds[0].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[0].type)); |
| 455 | opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| 456 | opnds[1].value = all_bits_zero_value(bitsof_irtype(opnds[1].type)); |
| 457 | |
| 458 | valgrind_execute_test(op, data); |
| 459 | |
| 460 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 461 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | // 2nd (right) operand variable, 1st operand all-bits-zero |
| 465 | num_input_bits = bitsof_irtype(opnds[1].type); |
| 466 | |
| 467 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 468 | opnds[1].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[1].type)); |
| 469 | opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| 470 | opnds[0].value = all_bits_zero_value(bitsof_irtype(opnds[0].type)); |
| 471 | |
| 472 | valgrind_execute_test(op, data); |
| 473 | |
| 474 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 475 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | /* Undefinedness propagates if the other operand is 1. |
| 479 | Use an all-bits-one operand and test the other operand in |
| 480 | the usual way (one bit undefined at a time). */ |
| 481 | |
| 482 | // 1st (left) operand variable, 2nd operand all-bits-one |
| 483 | num_input_bits = bitsof_irtype(opnds[0].type); |
| 484 | |
| 485 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 486 | opnds[0].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[0].type)); |
| 487 | opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| 488 | opnds[1].value = all_bits_one_value(bitsof_irtype(opnds[1].type)); |
| 489 | |
| 490 | valgrind_execute_test(op, data); |
| 491 | |
| 492 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 493 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 494 | } |
| 495 | |
| 496 | // 2nd (right) operand variable, 1st operand all-bits-one |
| 497 | num_input_bits = bitsof_irtype(opnds[1].type); |
| 498 | |
| 499 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 500 | opnds[1].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[1].type)); |
| 501 | opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| 502 | opnds[0].value = all_bits_one_value(bitsof_irtype(opnds[0].type)); |
| 503 | |
| 504 | valgrind_execute_test(op, data); |
| 505 | |
| 506 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 507 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 508 | } |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 509 | return tests_done; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 513 | static int |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 514 | test_or(const irop_t *op, test_data_t *data) |
| 515 | { |
| 516 | unsigned num_input_bits, bitpos; |
| 517 | opnd_t *opnds = data->opnds; |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 518 | int tests_done = 0; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 519 | |
| 520 | /* Undefinedness does not propagate if the other operand is 1. |
| 521 | Use an all-bits-one operand and test the other operand in |
| 522 | the usual way (one bit undefined at a time). */ |
| 523 | |
| 524 | // 1st (left) operand variable, 2nd operand all-bits-one |
| 525 | num_input_bits = bitsof_irtype(opnds[0].type); |
| 526 | |
| 527 | opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| 528 | opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| 529 | opnds[1].value = all_bits_one_value(bitsof_irtype(opnds[1].type)); |
| 530 | |
| 531 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 532 | opnds[0].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[0].type)); |
| 533 | |
| 534 | valgrind_execute_test(op, data); |
| 535 | |
| 536 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 537 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | // 2nd (right) operand variable, 1st operand all-bits-one |
| 541 | num_input_bits = bitsof_irtype(opnds[1].type); |
| 542 | |
| 543 | opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| 544 | opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| 545 | opnds[0].value = all_bits_one_value(bitsof_irtype(opnds[0].type)); |
| 546 | |
| 547 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 548 | opnds[1].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[1].type)); |
| 549 | |
| 550 | valgrind_execute_test(op, data); |
| 551 | |
| 552 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 553 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 554 | } |
| 555 | |
| 556 | /* Undefinedness propagates if the other operand is 0. |
| 557 | Use an all-bits-zero operand and test the other operand in |
| 558 | the usual way (one bit undefined at a time). */ |
| 559 | |
| 560 | // 1st (left) operand variable, 2nd operand all-bits-zero |
| 561 | num_input_bits = bitsof_irtype(opnds[0].type); |
| 562 | |
| 563 | opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| 564 | opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| 565 | opnds[1].value = all_bits_zero_value(bitsof_irtype(opnds[1].type)); |
| 566 | |
| 567 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 568 | opnds[0].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[0].type)); |
| 569 | |
| 570 | valgrind_execute_test(op, data); |
| 571 | |
| 572 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 573 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 574 | } |
| 575 | |
| 576 | // 2nd (right) operand variable, 1st operand all-bits-zero |
| 577 | num_input_bits = bitsof_irtype(opnds[1].type); |
| 578 | |
| 579 | opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| 580 | opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| 581 | opnds[0].value = all_bits_zero_value(bitsof_irtype(opnds[0].type)); |
| 582 | |
| 583 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 584 | opnds[1].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[1].type)); |
| 585 | |
| 586 | valgrind_execute_test(op, data); |
| 587 | |
| 588 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 589 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 590 | } |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 591 | return tests_done; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 595 | int |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 596 | test_binary_op(const irop_t *op, test_data_t *data) |
| 597 | { |
| 598 | unsigned num_input_bits, i, bitpos; |
| 599 | opnd_t *opnds = data->opnds; |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 600 | int tests_done = 0; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 601 | |
| 602 | /* Handle special cases upfront */ |
| 603 | switch (op->undef_kind) { |
| 604 | case UNDEF_SHL: |
| 605 | case UNDEF_SHR: |
| 606 | case UNDEF_SAR: |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 607 | return test_shift(op, data); |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 608 | |
| 609 | case UNDEF_AND: |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 610 | return test_and(op, data); |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 611 | |
| 612 | case UNDEF_OR: |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 613 | return test_or(op, data); |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 614 | |
| 615 | default: |
| 616 | break; |
| 617 | } |
| 618 | |
| 619 | /* For each operand, set a single bit to undefined and observe how |
| 620 | that propagates to the output. Do this for all bits in each |
| 621 | operand. */ |
| 622 | for (i = 0; i < 2; ++i) { |
florian | f74f542 | 2012-09-13 19:41:12 +0000 | [diff] [blame] | 623 | |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 624 | /* If this is a Iop that requires an immediate amount, |
| 625 | do not iterate the v-bits of the operand */ |
| 626 | if (((i+1) == op->immediate_index) |
| 627 | && (op->immediate_index)) break; |
florian | f74f542 | 2012-09-13 19:41:12 +0000 | [diff] [blame] | 628 | |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 629 | num_input_bits = bitsof_irtype(opnds[i].type); |
| 630 | opnds[0].vbits = defined_vbits(bitsof_irtype(opnds[0].type)); |
| 631 | opnds[1].vbits = defined_vbits(bitsof_irtype(opnds[1].type)); |
| 632 | |
| 633 | /* Set the value of the 2nd operand to something != 0. So division |
| 634 | won't crash. */ |
| 635 | memset(&opnds[1].value, 0xff, sizeof opnds[1].value); |
| 636 | |
florian | 5c00a61 | 2015-10-17 11:18:50 +0000 | [diff] [blame] | 637 | /* For immediate shift amounts choose a value of '1'. That value should |
| 638 | not cause a problem. Note: we always assign to the u64 member here. |
| 639 | The reason is that in ir_inject.c the value_t type is not visible. |
| 640 | The value is picked up there by interpreting the memory as an |
| 641 | ULong value. So, we rely on |
| 642 | union { |
| 643 | ULong v1; // value picked up in ir_inject.c |
| 644 | value_t v2; // value assigned here |
| 645 | } xx; |
| 646 | assert(sizeof xx.v1 == sizeof xx.v2.u64); |
| 647 | assert(xx.v1 == xx.v2.u64); |
| 648 | */ |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 649 | |
| 650 | if (op->immediate_index > 0) { |
| 651 | assert((op->immediate_type == Ity_I8) |
| 652 | || (op->immediate_type == Ity_I16) |
| 653 | || (op->immediate_type == Ity_I32)); |
florian | 5c00a61 | 2015-10-17 11:18:50 +0000 | [diff] [blame] | 654 | opnds[1].value.u64 = 1; |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 655 | } |
florian | f74f542 | 2012-09-13 19:41:12 +0000 | [diff] [blame] | 656 | |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 657 | for (bitpos = 0; bitpos < num_input_bits; ++bitpos) { |
| 658 | opnds[i].vbits = onehot_vbits(bitpos, bitsof_irtype(opnds[i].type)); |
| 659 | |
| 660 | valgrind_execute_test(op, data); |
| 661 | |
| 662 | check_result_for_binary(op, data); |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 663 | |
| 664 | tests_done++; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 665 | } |
| 666 | } |
carll | 24c9e7f | 2012-11-16 19:41:21 +0000 | [diff] [blame] | 667 | return tests_done; |
florian | bb913cd | 2012-08-28 16:50:39 +0000 | [diff] [blame] | 668 | } |