| 1 | /* |
| 2 | * test-bitfield.c |
| 3 | * |
| 4 | * BabelTrace - bitfield test program |
| 5 | * |
| 6 | * Copyright 2010-2019 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; under version 2 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | */ |
| 21 | |
| 22 | #include "compat/bitfield.h" |
| 23 | #include <time.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <stdio.h> |
| 26 | |
| 27 | #include <tap/tap.h> |
| 28 | |
| 29 | unsigned int glob; |
| 30 | |
| 31 | /* |
| 32 | * This function is only declared to show the size of a bitfield write in |
| 33 | * objdump. |
| 34 | */ |
| 35 | void fct(void) |
| 36 | { |
| 37 | bt_bitfield_write(&glob, unsigned int, 12, 15, 0x12345678); |
| 38 | } |
| 39 | |
| 40 | /* Test array size, in bytes */ |
| 41 | #define TEST_LEN 128 |
| 42 | #define NR_TESTS 10 |
| 43 | #define SIGNED_INT_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%X, signed int dest, varying read unit size" |
| 44 | #define SIGNED_INT_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%X, signed int source, varying write unit size" |
| 45 | #define SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, signed long long dest, varying read unit size" |
| 46 | #define SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, signed long long source, varying write unit size" |
| 47 | #define UNSIGNED_INT_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%X, unsigned int dest, varying read unit size" |
| 48 | #define UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%X, unsigned int source, varying write unit size" |
| 49 | #define UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, unsigned long long dest, varying read unit size" |
| 50 | #define UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, unsigned long long source, varying write unit size" |
| 51 | #define DIAG_FMT_STR "Failed reading value written \"%s\"-wise, with start=%i" \ |
| 52 | " and length=%i. Read %llX" |
| 53 | |
| 54 | static |
| 55 | unsigned int fls_u64(uint64_t x) |
| 56 | { |
| 57 | unsigned int r = 64; |
| 58 | |
| 59 | if (!x) |
| 60 | return 0; |
| 61 | |
| 62 | if (!(x & 0xFFFFFFFF00000000ULL)) { |
| 63 | x <<= 32; |
| 64 | r -= 32; |
| 65 | } |
| 66 | if (!(x & 0xFFFF000000000000ULL)) { |
| 67 | x <<= 16; |
| 68 | r -= 16; |
| 69 | } |
| 70 | if (!(x & 0xFF00000000000000ULL)) { |
| 71 | x <<= 8; |
| 72 | r -= 8; |
| 73 | } |
| 74 | if (!(x & 0xF000000000000000ULL)) { |
| 75 | x <<= 4; |
| 76 | r -= 4; |
| 77 | } |
| 78 | if (!(x & 0xC000000000000000ULL)) { |
| 79 | x <<= 2; |
| 80 | r -= 2; |
| 81 | } |
| 82 | if (!(x & 0x8000000000000000ULL)) { |
| 83 | x <<= 1; |
| 84 | r -= 1; |
| 85 | } |
| 86 | return r; |
| 87 | } |
| 88 | |
| 89 | static |
| 90 | unsigned int fls_u32(uint32_t x) |
| 91 | { |
| 92 | unsigned int r = 32; |
| 93 | |
| 94 | if (!x) |
| 95 | return 0; |
| 96 | if (!(x & 0xFFFF0000U)) { |
| 97 | x <<= 16; |
| 98 | r -= 16; |
| 99 | } |
| 100 | if (!(x & 0xFF000000U)) { |
| 101 | x <<= 8; |
| 102 | r -= 8; |
| 103 | } |
| 104 | if (!(x & 0xF0000000U)) { |
| 105 | x <<= 4; |
| 106 | r -= 4; |
| 107 | } |
| 108 | if (!(x & 0xC0000000U)) { |
| 109 | x <<= 2; |
| 110 | r -= 2; |
| 111 | } |
| 112 | if (!(x & 0x80000000U)) { |
| 113 | x <<= 1; |
| 114 | r -= 1; |
| 115 | } |
| 116 | return r; |
| 117 | } |
| 118 | |
| 119 | #define print_byte_array(c, len) \ |
| 120 | do { \ |
| 121 | unsigned long i; \ |
| 122 | \ |
| 123 | for (i = 0; i < (len); i++) { \ |
| 124 | printf("0x%X", (c)[i]); \ |
| 125 | if (i != (len) - 1) \ |
| 126 | printf(" "); \ |
| 127 | } \ |
| 128 | printf("\n"); \ |
| 129 | } while (0) |
| 130 | |
| 131 | #define init_byte_array(c, len, val) \ |
| 132 | do { \ |
| 133 | unsigned long i; \ |
| 134 | \ |
| 135 | for (i = 0; i < (len); i++) \ |
| 136 | (c)[i] = (val); \ |
| 137 | } while (0) |
| 138 | |
| 139 | #define check_result(ref, val, buffer, typename, start, len, \ |
| 140 | desc_fmt_str) \ |
| 141 | ({ \ |
| 142 | if ((val) != (ref)) { \ |
| 143 | fail(desc_fmt_str, ref); \ |
| 144 | diag(DIAG_FMT_STR, #typename, start, len, val); \ |
| 145 | printf("# "); \ |
| 146 | print_byte_array(buffer, TEST_LEN); \ |
| 147 | } \ |
| 148 | (val) != (ref); \ |
| 149 | }) |
| 150 | |
| 151 | void run_test_unsigned_write(unsigned int src_ui, unsigned long long src_ull) |
| 152 | { |
| 153 | unsigned int nrbits_ui, nrbits_ull; |
| 154 | union { |
| 155 | unsigned char c[TEST_LEN]; |
| 156 | unsigned short s[TEST_LEN/sizeof(unsigned short)]; |
| 157 | unsigned int i[TEST_LEN/sizeof(unsigned int)]; |
| 158 | unsigned long l[TEST_LEN/sizeof(unsigned long)]; |
| 159 | unsigned long long ll[TEST_LEN/sizeof(unsigned long long)]; |
| 160 | } target; |
| 161 | unsigned long long readval; |
| 162 | unsigned int s, l; |
| 163 | |
| 164 | /* The number of bits needed to represent 0 is 0. */ |
| 165 | nrbits_ui = fls_u32(src_ui); |
| 166 | |
| 167 | /* Write from unsigned integer src input. */ |
| 168 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 169 | for (l = nrbits_ui; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 170 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 171 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 172 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 173 | if (check_result(src_ui, readval, target.c, unsigned char, |
| 174 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 175 | return; |
| 176 | } |
| 177 | |
| 178 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 179 | bt_bitfield_write(target.s, unsigned short, s, l, src_ui); |
| 180 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 181 | if (check_result(src_ui, readval, target.c, unsigned short, |
| 182 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 183 | return; |
| 184 | } |
| 185 | |
| 186 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 187 | bt_bitfield_write(target.i, unsigned int, s, l, src_ui); |
| 188 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 189 | if (check_result(src_ui, readval, target.c, unsigned int, |
| 190 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 191 | return; |
| 192 | } |
| 193 | |
| 194 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 195 | bt_bitfield_write(target.l, unsigned long, s, l, src_ui); |
| 196 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 197 | if (check_result(src_ui, readval, target.c, unsigned long, |
| 198 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 199 | return; |
| 200 | } |
| 201 | |
| 202 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 203 | bt_bitfield_write(target.ll, unsigned long long, s, l, src_ui); |
| 204 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 205 | if (check_result(src_ui, readval, target.c, unsigned long long, |
| 206 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 207 | return; |
| 208 | } |
| 209 | } |
| 210 | } |
| 211 | pass(UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR, src_ui); |
| 212 | |
| 213 | /* The number of bits needed to represent 0 is 0. */ |
| 214 | nrbits_ull = fls_u64(src_ull); |
| 215 | |
| 216 | /* Write from unsigned long long src input. */ |
| 217 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 218 | for (l = nrbits_ull; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 219 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 220 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 221 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 222 | if (check_result(src_ull, readval, target.c, unsigned char, |
| 223 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 224 | return; |
| 225 | } |
| 226 | |
| 227 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 228 | bt_bitfield_write(target.s, unsigned short, s, l, src_ull); |
| 229 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 230 | if (check_result(src_ull, readval, target.c, unsigned short, |
| 231 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 232 | return; |
| 233 | } |
| 234 | |
| 235 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 236 | bt_bitfield_write(target.i, unsigned int, s, l, src_ull); |
| 237 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 238 | if (check_result(src_ull, readval, target.c, unsigned int, |
| 239 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 240 | return; |
| 241 | } |
| 242 | |
| 243 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 244 | bt_bitfield_write(target.l, unsigned long, s, l, src_ull); |
| 245 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 246 | if (check_result(src_ull, readval, target.c, unsigned long, |
| 247 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 248 | return; |
| 249 | } |
| 250 | |
| 251 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 252 | bt_bitfield_write(target.ll, unsigned long long, s, l, src_ull); |
| 253 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 254 | if (check_result(src_ull, readval, target.c, unsigned long long, |
| 255 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 256 | return; |
| 257 | } |
| 258 | } |
| 259 | } |
| 260 | pass(UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, src_ull); |
| 261 | } |
| 262 | |
| 263 | void run_test_unsigned_read(unsigned int src_ui, unsigned long long src_ull) |
| 264 | { |
| 265 | unsigned int nrbits_ui, nrbits_ull, readval_ui; |
| 266 | union { |
| 267 | unsigned char c[TEST_LEN]; |
| 268 | unsigned short s[TEST_LEN/sizeof(unsigned short)]; |
| 269 | unsigned int i[TEST_LEN/sizeof(unsigned int)]; |
| 270 | unsigned long l[TEST_LEN/sizeof(unsigned long)]; |
| 271 | unsigned long long ll[TEST_LEN/sizeof(unsigned long long)]; |
| 272 | } target; |
| 273 | unsigned long long readval_ull; |
| 274 | unsigned int s, l; |
| 275 | |
| 276 | /* The number of bits needed to represent 0 is 0. */ |
| 277 | nrbits_ui = fls_u32(src_ui); |
| 278 | |
| 279 | /* Read to unsigned integer readval output. */ |
| 280 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 281 | for (l = nrbits_ui; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 282 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 283 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 284 | bt_bitfield_read(target.c, unsigned char, s, l, &readval_ui); |
| 285 | if (check_result(src_ui, readval_ui, target.c, unsigned char, |
| 286 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 287 | return; |
| 288 | } |
| 289 | |
| 290 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 291 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 292 | bt_bitfield_read(target.s, unsigned short, s, l, &readval_ui); |
| 293 | if (check_result(src_ui, readval_ui, target.c, unsigned short, |
| 294 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 295 | return; |
| 296 | } |
| 297 | |
| 298 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 299 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 300 | bt_bitfield_read(target.i, unsigned int, s, l, &readval_ui); |
| 301 | if (check_result(src_ui, readval_ui, target.c, unsigned int, |
| 302 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 303 | return; |
| 304 | } |
| 305 | |
| 306 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 307 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 308 | bt_bitfield_read(target.l, unsigned long, s, l, &readval_ui); |
| 309 | if (check_result(src_ui, readval_ui, target.c, unsigned long, |
| 310 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 311 | return; |
| 312 | } |
| 313 | |
| 314 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 315 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 316 | bt_bitfield_read(target.ll, unsigned long long, s, l, &readval_ui); |
| 317 | if (check_result(src_ui, readval_ui, target.c, unsigned long long, |
| 318 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 319 | return; |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | pass(UNSIGNED_INT_READ_TEST_DESC_FMT_STR, src_ui); |
| 324 | |
| 325 | /* The number of bits needed to represent 0 is 0. */ |
| 326 | nrbits_ull = fls_u64(src_ull); |
| 327 | |
| 328 | /* Read to unsigned long long readval output. */ |
| 329 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 330 | for (l = nrbits_ull; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 331 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 332 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 333 | bt_bitfield_read(target.c, unsigned char, s, l, &readval_ull); |
| 334 | if (check_result(src_ull, readval_ull, target.c, unsigned char, |
| 335 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 336 | return; |
| 337 | } |
| 338 | |
| 339 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 340 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 341 | bt_bitfield_read(target.s, unsigned short, s, l, &readval_ull); |
| 342 | if (check_result(src_ull, readval_ull, target.c, unsigned short, |
| 343 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 344 | return; |
| 345 | } |
| 346 | |
| 347 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 348 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 349 | bt_bitfield_read(target.i, unsigned int, s, l, &readval_ull); |
| 350 | if (check_result(src_ull, readval_ull, target.c, unsigned int, |
| 351 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 352 | return; |
| 353 | } |
| 354 | |
| 355 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 356 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 357 | bt_bitfield_read(target.l, unsigned long, s, l, &readval_ull); |
| 358 | if (check_result(src_ull, readval_ull, target.c, unsigned long, |
| 359 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 360 | return; |
| 361 | } |
| 362 | |
| 363 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 364 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 365 | bt_bitfield_read(target.ll, unsigned long long, s, l, &readval_ull); |
| 366 | if (check_result(src_ull, readval_ull, target.c, unsigned long long, |
| 367 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 368 | return; |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | pass(UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, src_ull); |
| 373 | } |
| 374 | |
| 375 | void run_test_unsigned(unsigned int src_ui, unsigned long long src_ull) |
| 376 | { |
| 377 | run_test_unsigned_write(src_ui, src_ull); |
| 378 | run_test_unsigned_read(src_ui, src_ull); |
| 379 | } |
| 380 | |
| 381 | void run_test_signed_write(int src_i, long long src_ll) |
| 382 | { |
| 383 | unsigned int nrbits_i, nrbits_ll; |
| 384 | union { |
| 385 | signed char c[TEST_LEN]; |
| 386 | short s[TEST_LEN/sizeof(short)]; |
| 387 | int i[TEST_LEN/sizeof(int)]; |
| 388 | long l[TEST_LEN/sizeof(long)]; |
| 389 | long long ll[TEST_LEN/sizeof(long long)]; |
| 390 | } target; |
| 391 | long long readval; |
| 392 | unsigned int s, l; |
| 393 | |
| 394 | if (!src_i) |
| 395 | nrbits_i = 0; /* The number of bits needed to represent 0 is 0. */ |
| 396 | else if (src_i & 0x80000000U) |
| 397 | nrbits_i = fls_u32(~src_i) + 1; /* Find least significant bit conveying sign */ |
| 398 | else |
| 399 | nrbits_i = fls_u32(src_i) + 1; /* Keep sign at 0 */ |
| 400 | |
| 401 | /* Write from signed integer src input. */ |
| 402 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 403 | for (l = nrbits_i; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 404 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 405 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 406 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 407 | if (check_result(src_i, readval, target.c, signed char, |
| 408 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 409 | return; |
| 410 | } |
| 411 | |
| 412 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 413 | bt_bitfield_write(target.s, short, s, l, src_i); |
| 414 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 415 | if (check_result(src_i, readval, target.c, short, |
| 416 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 417 | return; |
| 418 | } |
| 419 | |
| 420 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 421 | bt_bitfield_write(target.i, int, s, l, src_i); |
| 422 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 423 | if (check_result(src_i, readval, target.c, int, |
| 424 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 425 | return; |
| 426 | } |
| 427 | |
| 428 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 429 | bt_bitfield_write(target.l, long, s, l, src_i); |
| 430 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 431 | if (check_result(src_i, readval, target.c, long, |
| 432 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 433 | return; |
| 434 | } |
| 435 | |
| 436 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 437 | bt_bitfield_write(target.ll, long long, s, l, src_i); |
| 438 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 439 | if (check_result(src_i, readval, target.c, long long, |
| 440 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR)) { |
| 441 | return; |
| 442 | } |
| 443 | } |
| 444 | } |
| 445 | pass(SIGNED_INT_WRITE_TEST_DESC_FMT_STR, src_i); |
| 446 | |
| 447 | if (!src_ll) |
| 448 | nrbits_ll = 0; /* The number of bits needed to represent 0 is 0. */ |
| 449 | else if (src_ll & 0x8000000000000000ULL) |
| 450 | nrbits_ll = fls_u64(~src_ll) + 1; /* Find least significant bit conveying sign */ |
| 451 | else |
| 452 | nrbits_ll = fls_u64(src_ll) + 1; /* Keep sign at 0 */ |
| 453 | |
| 454 | /* Write from signed long long src input. */ |
| 455 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 456 | for (l = nrbits_ll; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 457 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 458 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 459 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 460 | if (check_result(src_ll, readval, target.c, signed char, |
| 461 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 462 | return; |
| 463 | } |
| 464 | |
| 465 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 466 | bt_bitfield_write(target.s, short, s, l, src_ll); |
| 467 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 468 | if (check_result(src_ll, readval, target.c, short, |
| 469 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 470 | return; |
| 471 | } |
| 472 | |
| 473 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 474 | bt_bitfield_write(target.i, int, s, l, src_ll); |
| 475 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 476 | if (check_result(src_ll, readval, target.c, int, |
| 477 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 478 | return; |
| 479 | } |
| 480 | |
| 481 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 482 | bt_bitfield_write(target.l, long, s, l, src_ll); |
| 483 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 484 | if (check_result(src_ll, readval, target.c, long, |
| 485 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 486 | return; |
| 487 | } |
| 488 | |
| 489 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 490 | bt_bitfield_write(target.ll, long long, s, l, src_ll); |
| 491 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 492 | if (check_result(src_ll, readval, target.c, long long, |
| 493 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR)) { |
| 494 | return; |
| 495 | } |
| 496 | } |
| 497 | } |
| 498 | pass(SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, src_ll); |
| 499 | } |
| 500 | |
| 501 | void run_test_signed_read(int src_i, long long src_ll) |
| 502 | { |
| 503 | unsigned int nrbits_i, nrbits_ll; |
| 504 | int readval_i; |
| 505 | union { |
| 506 | unsigned char c[TEST_LEN]; |
| 507 | unsigned short s[TEST_LEN/sizeof(unsigned short)]; |
| 508 | unsigned int i[TEST_LEN/sizeof(unsigned int)]; |
| 509 | unsigned long l[TEST_LEN/sizeof(unsigned long)]; |
| 510 | unsigned long long ll[TEST_LEN/sizeof(unsigned long long)]; |
| 511 | } target; |
| 512 | long long readval_ll; |
| 513 | unsigned int s, l; |
| 514 | |
| 515 | if (!src_i) |
| 516 | nrbits_i = 0; /* The number of bits needed to represent 0 is 0. */ |
| 517 | else if (src_i & 0x80000000U) |
| 518 | nrbits_i = fls_u32(~src_i) + 1; /* Find least significant bit conveying sign */ |
| 519 | else |
| 520 | nrbits_i = fls_u32(src_i) + 1; /* Keep sign at 0 */ |
| 521 | |
| 522 | /* Read to signed integer readval output. */ |
| 523 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 524 | for (l = nrbits_i; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 525 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 526 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 527 | bt_bitfield_read(target.c, signed char, s, l, &readval_i); |
| 528 | if (check_result(src_i, readval_i, target.c, signed char, |
| 529 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 530 | return; |
| 531 | } |
| 532 | |
| 533 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 534 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 535 | bt_bitfield_read(target.s, short, s, l, &readval_i); |
| 536 | if (check_result(src_i, readval_i, target.c, short, |
| 537 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 538 | return; |
| 539 | } |
| 540 | |
| 541 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 542 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 543 | bt_bitfield_read(target.i, int, s, l, &readval_i); |
| 544 | if (check_result(src_i, readval_i, target.c, int, |
| 545 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 546 | return; |
| 547 | } |
| 548 | |
| 549 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 550 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 551 | bt_bitfield_read(target.l, long, s, l, &readval_i); |
| 552 | if (check_result(src_i, readval_i, target.c, long, |
| 553 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 554 | return; |
| 555 | } |
| 556 | |
| 557 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 558 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 559 | bt_bitfield_read(target.ll, long long, s, l, &readval_i); |
| 560 | if (check_result(src_i, readval_i, target.c, long long, |
| 561 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR)) { |
| 562 | return; |
| 563 | } |
| 564 | } |
| 565 | } |
| 566 | pass(SIGNED_INT_READ_TEST_DESC_FMT_STR, src_i); |
| 567 | |
| 568 | if (!src_ll) |
| 569 | nrbits_ll = 0; /* The number of bits needed to represent 0 is 0. */ |
| 570 | if (src_ll & 0x8000000000000000ULL) |
| 571 | nrbits_ll = fls_u64(~src_ll) + 1; /* Find least significant bit conveying sign */ |
| 572 | else |
| 573 | nrbits_ll = fls_u64(src_ll) + 1; /* Keep sign at 0 */ |
| 574 | |
| 575 | /* Read to signed long long readval output. */ |
| 576 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 577 | for (l = nrbits_ll; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 578 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 579 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 580 | bt_bitfield_read(target.c, signed char, s, l, &readval_ll); |
| 581 | if (check_result(src_ll, readval_ll, target.c, signed char, |
| 582 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 583 | return; |
| 584 | } |
| 585 | |
| 586 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 587 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 588 | bt_bitfield_read(target.s, short, s, l, &readval_ll); |
| 589 | if (check_result(src_ll, readval_ll, target.c, short, |
| 590 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 591 | return; |
| 592 | } |
| 593 | |
| 594 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 595 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 596 | bt_bitfield_read(target.i, int, s, l, &readval_ll); |
| 597 | if (check_result(src_ll, readval_ll, target.c, int, |
| 598 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 599 | return; |
| 600 | } |
| 601 | |
| 602 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 603 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 604 | bt_bitfield_read(target.l, long, s, l, &readval_ll); |
| 605 | if (check_result(src_ll, readval_ll, target.c, long, |
| 606 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 607 | return; |
| 608 | } |
| 609 | |
| 610 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 611 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 612 | bt_bitfield_read(target.ll, long long, s, l, &readval_ll); |
| 613 | if (check_result(src_ll, readval_ll, target.c, long long, |
| 614 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR)) { |
| 615 | return; |
| 616 | } |
| 617 | } |
| 618 | } |
| 619 | pass(SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, src_ll); |
| 620 | } |
| 621 | |
| 622 | void run_test_signed(int src_i, long long src_ll) |
| 623 | { |
| 624 | run_test_signed_write(src_i, src_ll); |
| 625 | run_test_signed_read(src_i, src_ll); |
| 626 | } |
| 627 | |
| 628 | void run_test(void) |
| 629 | { |
| 630 | int i; |
| 631 | |
| 632 | plan_tests(NR_TESTS * 8 + 24); |
| 633 | |
| 634 | srand(time(NULL)); |
| 635 | |
| 636 | run_test_unsigned(0, 0); |
| 637 | run_test_signed(0, 0); |
| 638 | run_test_unsigned(1, 1); |
| 639 | run_test_unsigned(~0U, ~0ULL); |
| 640 | run_test_signed(-1U, -1ULL); |
| 641 | run_test_signed(0x80000000U, 0x8000000000000000ULL); |
| 642 | |
| 643 | for (i = 0; i < NR_TESTS; i++) { |
| 644 | unsigned int src_ui = rand(); |
| 645 | unsigned long long src_ull = ((unsigned long long) (unsigned int) rand() << 32) | |
| 646 | (unsigned long long) (unsigned int) rand(); |
| 647 | |
| 648 | run_test_unsigned(src_ui, src_ull); |
| 649 | run_test_signed((int) src_ui, (long long) src_ull); |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | static |
| 654 | int print_encodings(unsigned long src, unsigned int shift, unsigned int len) |
| 655 | { |
| 656 | union { |
| 657 | unsigned char c[8]; |
| 658 | unsigned short s[4]; |
| 659 | unsigned int i[2]; |
| 660 | unsigned long l[2]; |
| 661 | unsigned long long ll[1]; |
| 662 | } target; |
| 663 | unsigned long long readval; |
| 664 | |
| 665 | init_byte_array(target.c, 8, 0xFF); |
| 666 | bt_bitfield_write(target.c, unsigned char, shift, len, src); |
| 667 | printf("bytewise\n"); |
| 668 | print_byte_array(target.c, 8); |
| 669 | |
| 670 | init_byte_array(target.c, 8, 0xFF); |
| 671 | bt_bitfield_write(target.s, unsigned short, shift, len, src); |
| 672 | printf("shortwise\n"); |
| 673 | print_byte_array(target.c, 8); |
| 674 | |
| 675 | init_byte_array(target.c, 8, 0xFF); |
| 676 | bt_bitfield_write(target.i, unsigned int, shift, len, src); |
| 677 | printf("intwise\n"); |
| 678 | print_byte_array(target.c, 8); |
| 679 | |
| 680 | init_byte_array(target.c, 8, 0xFF); |
| 681 | bt_bitfield_write(target.l, unsigned long, shift, len, src); |
| 682 | printf("longwise\n"); |
| 683 | print_byte_array(target.c, 8); |
| 684 | |
| 685 | init_byte_array(target.c, 8, 0xFF); |
| 686 | bt_bitfield_write(target.ll, unsigned long long, shift, len, src); |
| 687 | printf("lluwise\n"); |
| 688 | print_byte_array(target.c, 8); |
| 689 | |
| 690 | bt_bitfield_read(target.c, unsigned char, shift, len, &readval); |
| 691 | printf("read: %llX\n", readval); |
| 692 | print_byte_array(target.c, 8); |
| 693 | |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | int main(int argc, char **argv) |
| 698 | { |
| 699 | if (argc > 1) { |
| 700 | /* Print encodings */ |
| 701 | unsigned long src; |
| 702 | unsigned int shift, len; |
| 703 | |
| 704 | src = atoi(argv[1]); |
| 705 | if (argc > 2) |
| 706 | shift = atoi(argv[2]); |
| 707 | else |
| 708 | shift = 12; |
| 709 | if (argc > 3) |
| 710 | len = atoi(argv[3]); |
| 711 | else |
| 712 | len = 40; |
| 713 | return print_encodings(src, shift, len); |
| 714 | } |
| 715 | |
| 716 | /* Run tap-formated tests */ |
| 717 | run_test(); |
| 718 | return exit_status(); |
| 719 | } |