| 1 | /* |
| 2 | * SPDX-License-Identifier: GPL-2.0-only |
| 3 | * |
| 4 | * Copyright (C) 2010-2019 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | * |
| 6 | * BabelTrace - bitfield test program |
| 7 | */ |
| 8 | |
| 9 | #include "compat/bitfield.h" |
| 10 | #include <time.h> |
| 11 | #include <stdlib.h> |
| 12 | #include <stdio.h> |
| 13 | |
| 14 | #include "tap/tap.h" |
| 15 | |
| 16 | unsigned int glob; |
| 17 | |
| 18 | /* |
| 19 | * This function is only declared to show the size of a bitfield write in |
| 20 | * objdump. The declaration is there to avoid a -Wmissing-prototypes warning. |
| 21 | */ |
| 22 | void fct(void); |
| 23 | void fct(void) |
| 24 | { |
| 25 | bt_bitfield_write(&glob, unsigned int, 12, 15, 0x12345678); |
| 26 | } |
| 27 | |
| 28 | /* Test array size, in bytes */ |
| 29 | #define TEST_LEN 128 |
| 30 | #define NR_TESTS 10 |
| 31 | #define SIGNED_INT_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%X, signed int dest, varying read unit size" |
| 32 | #define SIGNED_INT_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%X, signed int source, varying write unit size" |
| 33 | #define SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, signed long long dest, varying read unit size" |
| 34 | #define SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, signed long long source, varying write unit size" |
| 35 | #define UNSIGNED_INT_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%X, unsigned int dest, varying read unit size" |
| 36 | #define UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%X, unsigned int source, varying write unit size" |
| 37 | #define UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, unsigned long long dest, varying read unit size" |
| 38 | #define UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR "Writing and reading back 0x%llX, unsigned long long source, varying write unit size" |
| 39 | #define DIAG_FMT_STR(val_type_fmt) "Failed reading value written \"%s\"-wise, with start=%i" \ |
| 40 | " and length=%i. Read 0x" val_type_fmt |
| 41 | |
| 42 | static |
| 43 | unsigned int fls_u64(uint64_t x) |
| 44 | { |
| 45 | unsigned int r = 64; |
| 46 | |
| 47 | if (!x) |
| 48 | return 0; |
| 49 | |
| 50 | if (!(x & 0xFFFFFFFF00000000ULL)) { |
| 51 | x <<= 32; |
| 52 | r -= 32; |
| 53 | } |
| 54 | if (!(x & 0xFFFF000000000000ULL)) { |
| 55 | x <<= 16; |
| 56 | r -= 16; |
| 57 | } |
| 58 | if (!(x & 0xFF00000000000000ULL)) { |
| 59 | x <<= 8; |
| 60 | r -= 8; |
| 61 | } |
| 62 | if (!(x & 0xF000000000000000ULL)) { |
| 63 | x <<= 4; |
| 64 | r -= 4; |
| 65 | } |
| 66 | if (!(x & 0xC000000000000000ULL)) { |
| 67 | x <<= 2; |
| 68 | r -= 2; |
| 69 | } |
| 70 | if (!(x & 0x8000000000000000ULL)) { |
| 71 | x <<= 1; |
| 72 | r -= 1; |
| 73 | } |
| 74 | return r; |
| 75 | } |
| 76 | |
| 77 | static |
| 78 | unsigned int fls_u32(uint32_t x) |
| 79 | { |
| 80 | unsigned int r = 32; |
| 81 | |
| 82 | if (!x) |
| 83 | return 0; |
| 84 | if (!(x & 0xFFFF0000U)) { |
| 85 | x <<= 16; |
| 86 | r -= 16; |
| 87 | } |
| 88 | if (!(x & 0xFF000000U)) { |
| 89 | x <<= 8; |
| 90 | r -= 8; |
| 91 | } |
| 92 | if (!(x & 0xF0000000U)) { |
| 93 | x <<= 4; |
| 94 | r -= 4; |
| 95 | } |
| 96 | if (!(x & 0xC0000000U)) { |
| 97 | x <<= 2; |
| 98 | r -= 2; |
| 99 | } |
| 100 | if (!(x & 0x80000000U)) { |
| 101 | x <<= 1; |
| 102 | r -= 1; |
| 103 | } |
| 104 | return r; |
| 105 | } |
| 106 | |
| 107 | #define print_byte_array(c, len) \ |
| 108 | do { \ |
| 109 | unsigned long i; \ |
| 110 | \ |
| 111 | for (i = 0; i < (len); i++) { \ |
| 112 | printf("0x%X", (c)[i]); \ |
| 113 | if (i != (len) - 1) \ |
| 114 | printf(" "); \ |
| 115 | } \ |
| 116 | printf("\n"); \ |
| 117 | } while (0) |
| 118 | |
| 119 | #define init_byte_array(c, len, val) \ |
| 120 | do { \ |
| 121 | unsigned long i; \ |
| 122 | \ |
| 123 | for (i = 0; i < (len); i++) \ |
| 124 | (c)[i] = (val); \ |
| 125 | } while (0) |
| 126 | |
| 127 | #define check_result(ref, val, buffer, typename, start, len, \ |
| 128 | desc_fmt_str, val_type_fmt) \ |
| 129 | ({ \ |
| 130 | if ((val) != (ref)) { \ |
| 131 | fail(desc_fmt_str, ref); \ |
| 132 | diag(DIAG_FMT_STR(val_type_fmt), #typename, start, len, val); \ |
| 133 | printf("# "); \ |
| 134 | print_byte_array(buffer, TEST_LEN); \ |
| 135 | } \ |
| 136 | (val) != (ref); \ |
| 137 | }) |
| 138 | |
| 139 | static |
| 140 | void run_test_unsigned_write(unsigned int src_ui, unsigned long long src_ull) |
| 141 | { |
| 142 | unsigned int nrbits_ui, nrbits_ull; |
| 143 | union { |
| 144 | unsigned char c[TEST_LEN]; |
| 145 | unsigned short s[TEST_LEN/sizeof(unsigned short)]; |
| 146 | unsigned int i[TEST_LEN/sizeof(unsigned int)]; |
| 147 | unsigned long l[TEST_LEN/sizeof(unsigned long)]; |
| 148 | unsigned long long ll[TEST_LEN/sizeof(unsigned long long)]; |
| 149 | } target; |
| 150 | unsigned long long readval; |
| 151 | unsigned int s, l; |
| 152 | |
| 153 | /* The number of bits needed to represent 0 is 0. */ |
| 154 | nrbits_ui = fls_u32(src_ui); |
| 155 | |
| 156 | /* Write from unsigned integer src input. */ |
| 157 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 158 | for (l = nrbits_ui; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 159 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 160 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 161 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 162 | if (check_result(src_ui, readval, target.c, unsigned char, |
| 163 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 164 | "%llX")) { |
| 165 | return; |
| 166 | } |
| 167 | |
| 168 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 169 | bt_bitfield_write(target.s, unsigned short, s, l, src_ui); |
| 170 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 171 | if (check_result(src_ui, readval, target.c, unsigned short, |
| 172 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 173 | "%llX")) { |
| 174 | return; |
| 175 | } |
| 176 | |
| 177 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 178 | bt_bitfield_write(target.i, unsigned int, s, l, src_ui); |
| 179 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 180 | if (check_result(src_ui, readval, target.c, unsigned int, |
| 181 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 182 | "%llX")) { |
| 183 | return; |
| 184 | } |
| 185 | |
| 186 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 187 | bt_bitfield_write(target.l, unsigned long, 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 long, |
| 190 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 191 | "%llX")) { |
| 192 | return; |
| 193 | } |
| 194 | |
| 195 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 196 | bt_bitfield_write(target.ll, unsigned long long, s, l, src_ui); |
| 197 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 198 | if (check_result(src_ui, readval, target.c, unsigned long long, |
| 199 | s, l, UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 200 | "%llX")) { |
| 201 | return; |
| 202 | } |
| 203 | } |
| 204 | } |
| 205 | pass(UNSIGNED_INT_WRITE_TEST_DESC_FMT_STR, src_ui); |
| 206 | |
| 207 | /* The number of bits needed to represent 0 is 0. */ |
| 208 | nrbits_ull = fls_u64(src_ull); |
| 209 | |
| 210 | /* Write from unsigned long long src input. */ |
| 211 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 212 | for (l = nrbits_ull; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 213 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 214 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 215 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 216 | if (check_result(src_ull, readval, target.c, unsigned char, |
| 217 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 218 | "%llX")) { |
| 219 | return; |
| 220 | } |
| 221 | |
| 222 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 223 | bt_bitfield_write(target.s, unsigned short, s, l, src_ull); |
| 224 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 225 | if (check_result(src_ull, readval, target.c, unsigned short, |
| 226 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 227 | "%llX")) { |
| 228 | return; |
| 229 | } |
| 230 | |
| 231 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 232 | bt_bitfield_write(target.i, unsigned int, s, l, src_ull); |
| 233 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 234 | if (check_result(src_ull, readval, target.c, unsigned int, |
| 235 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 236 | "%llX")) { |
| 237 | return; |
| 238 | } |
| 239 | |
| 240 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 241 | bt_bitfield_write(target.l, unsigned long, s, l, src_ull); |
| 242 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 243 | if (check_result(src_ull, readval, target.c, unsigned long, |
| 244 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 245 | "%llX")) { |
| 246 | return; |
| 247 | } |
| 248 | |
| 249 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 250 | bt_bitfield_write(target.ll, unsigned long long, s, l, src_ull); |
| 251 | bt_bitfield_read(target.c, unsigned char, s, l, &readval); |
| 252 | if (check_result(src_ull, readval, target.c, unsigned long long, |
| 253 | s, l, UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 254 | "%llX")) { |
| 255 | return; |
| 256 | } |
| 257 | } |
| 258 | } |
| 259 | pass(UNSIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, src_ull); |
| 260 | } |
| 261 | |
| 262 | static |
| 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 | "%X")) { |
| 288 | return; |
| 289 | } |
| 290 | |
| 291 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 292 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 293 | bt_bitfield_read(target.s, unsigned short, s, l, &readval_ui); |
| 294 | if (check_result(src_ui, readval_ui, target.c, unsigned short, |
| 295 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 296 | "%X")) { |
| 297 | return; |
| 298 | } |
| 299 | |
| 300 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 301 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 302 | bt_bitfield_read(target.i, unsigned int, s, l, &readval_ui); |
| 303 | if (check_result(src_ui, readval_ui, target.c, unsigned int, |
| 304 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 305 | "%X")) { |
| 306 | return; |
| 307 | } |
| 308 | |
| 309 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 310 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 311 | bt_bitfield_read(target.l, unsigned long, s, l, &readval_ui); |
| 312 | if (check_result(src_ui, readval_ui, target.c, unsigned long, |
| 313 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 314 | "%X")) { |
| 315 | return; |
| 316 | } |
| 317 | |
| 318 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 319 | bt_bitfield_write(target.c, unsigned char, s, l, src_ui); |
| 320 | bt_bitfield_read(target.ll, unsigned long long, s, l, &readval_ui); |
| 321 | if (check_result(src_ui, readval_ui, target.c, unsigned long long, |
| 322 | s, l, UNSIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 323 | "%X")) { |
| 324 | return; |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | pass(UNSIGNED_INT_READ_TEST_DESC_FMT_STR, src_ui); |
| 329 | |
| 330 | /* The number of bits needed to represent 0 is 0. */ |
| 331 | nrbits_ull = fls_u64(src_ull); |
| 332 | |
| 333 | /* Read to unsigned long long readval output. */ |
| 334 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 335 | for (l = nrbits_ull; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 336 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 337 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 338 | bt_bitfield_read(target.c, unsigned char, s, l, &readval_ull); |
| 339 | if (check_result(src_ull, readval_ull, target.c, unsigned char, |
| 340 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 341 | "%llX")) { |
| 342 | return; |
| 343 | } |
| 344 | |
| 345 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 346 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 347 | bt_bitfield_read(target.s, unsigned short, s, l, &readval_ull); |
| 348 | if (check_result(src_ull, readval_ull, target.c, unsigned short, |
| 349 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 350 | "%llX")) { |
| 351 | return; |
| 352 | } |
| 353 | |
| 354 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 355 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 356 | bt_bitfield_read(target.i, unsigned int, s, l, &readval_ull); |
| 357 | if (check_result(src_ull, readval_ull, target.c, unsigned int, |
| 358 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 359 | "%llX")) { |
| 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.l, unsigned long, s, l, &readval_ull); |
| 366 | if (check_result(src_ull, readval_ull, target.c, unsigned long, |
| 367 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 368 | "%llX")) { |
| 369 | return; |
| 370 | } |
| 371 | |
| 372 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 373 | bt_bitfield_write(target.c, unsigned char, s, l, src_ull); |
| 374 | bt_bitfield_read(target.ll, unsigned long long, s, l, &readval_ull); |
| 375 | if (check_result(src_ull, readval_ull, target.c, unsigned long long, |
| 376 | s, l, UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 377 | "%llX")) { |
| 378 | return; |
| 379 | } |
| 380 | } |
| 381 | } |
| 382 | pass(UNSIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, src_ull); |
| 383 | } |
| 384 | |
| 385 | static |
| 386 | void run_test_unsigned(unsigned int src_ui, unsigned long long src_ull) |
| 387 | { |
| 388 | run_test_unsigned_write(src_ui, src_ull); |
| 389 | run_test_unsigned_read(src_ui, src_ull); |
| 390 | } |
| 391 | |
| 392 | static |
| 393 | void run_test_signed_write(int src_i, long long src_ll) |
| 394 | { |
| 395 | unsigned int nrbits_i, nrbits_ll; |
| 396 | union { |
| 397 | signed char c[TEST_LEN]; |
| 398 | short s[TEST_LEN/sizeof(short)]; |
| 399 | int i[TEST_LEN/sizeof(int)]; |
| 400 | long l[TEST_LEN/sizeof(long)]; |
| 401 | long long ll[TEST_LEN/sizeof(long long)]; |
| 402 | } target; |
| 403 | long long readval; |
| 404 | unsigned int s, l; |
| 405 | |
| 406 | if (!src_i) |
| 407 | nrbits_i = 0; /* The number of bits needed to represent 0 is 0. */ |
| 408 | else if (src_i & 0x80000000U) |
| 409 | nrbits_i = fls_u32(~src_i) + 1; /* Find least significant bit conveying sign */ |
| 410 | else |
| 411 | nrbits_i = fls_u32(src_i) + 1; /* Keep sign at 0 */ |
| 412 | |
| 413 | /* Write from signed integer src input. */ |
| 414 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 415 | for (l = nrbits_i; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 416 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 417 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 418 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 419 | if (check_result(src_i, readval, target.c, signed char, |
| 420 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 421 | "%llX")) { |
| 422 | return; |
| 423 | } |
| 424 | |
| 425 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 426 | bt_bitfield_write(target.s, short, s, l, src_i); |
| 427 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 428 | if (check_result(src_i, readval, target.c, short, |
| 429 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 430 | "%llX")) { |
| 431 | return; |
| 432 | } |
| 433 | |
| 434 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 435 | bt_bitfield_write(target.i, int, s, l, src_i); |
| 436 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 437 | if (check_result(src_i, readval, target.c, int, |
| 438 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 439 | "%llX")) { |
| 440 | return; |
| 441 | } |
| 442 | |
| 443 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 444 | bt_bitfield_write(target.l, long, s, l, src_i); |
| 445 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 446 | if (check_result(src_i, readval, target.c, long, |
| 447 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 448 | "%llX")) { |
| 449 | return; |
| 450 | } |
| 451 | |
| 452 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 453 | bt_bitfield_write(target.ll, long long, s, l, src_i); |
| 454 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 455 | if (check_result(src_i, readval, target.c, long long, |
| 456 | s, l, SIGNED_INT_WRITE_TEST_DESC_FMT_STR, |
| 457 | "%llX")) { |
| 458 | return; |
| 459 | } |
| 460 | } |
| 461 | } |
| 462 | pass(SIGNED_INT_WRITE_TEST_DESC_FMT_STR, src_i); |
| 463 | |
| 464 | if (!src_ll) |
| 465 | nrbits_ll = 0; /* The number of bits needed to represent 0 is 0. */ |
| 466 | else if (src_ll & 0x8000000000000000ULL) |
| 467 | nrbits_ll = fls_u64(~src_ll) + 1; /* Find least significant bit conveying sign */ |
| 468 | else |
| 469 | nrbits_ll = fls_u64(src_ll) + 1; /* Keep sign at 0 */ |
| 470 | |
| 471 | /* Write from signed long long src input. */ |
| 472 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 473 | for (l = nrbits_ll; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 474 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 475 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 476 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 477 | if (check_result(src_ll, readval, target.c, signed char, |
| 478 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 479 | "%llX")) { |
| 480 | return; |
| 481 | } |
| 482 | |
| 483 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 484 | bt_bitfield_write(target.s, short, s, l, src_ll); |
| 485 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 486 | if (check_result(src_ll, readval, target.c, short, |
| 487 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 488 | "%llX")) { |
| 489 | return; |
| 490 | } |
| 491 | |
| 492 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 493 | bt_bitfield_write(target.i, int, s, l, src_ll); |
| 494 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 495 | if (check_result(src_ll, readval, target.c, int, |
| 496 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 497 | "%llX")) { |
| 498 | return; |
| 499 | } |
| 500 | |
| 501 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 502 | bt_bitfield_write(target.l, long, s, l, src_ll); |
| 503 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 504 | if (check_result(src_ll, readval, target.c, long, |
| 505 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 506 | "%llX")) { |
| 507 | return; |
| 508 | } |
| 509 | |
| 510 | init_byte_array(target.c, TEST_LEN, 0x0); |
| 511 | bt_bitfield_write(target.ll, long long, s, l, src_ll); |
| 512 | bt_bitfield_read(target.c, signed char, s, l, &readval); |
| 513 | if (check_result(src_ll, readval, target.c, long long, |
| 514 | s, l, SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, |
| 515 | "%llX")) { |
| 516 | return; |
| 517 | } |
| 518 | } |
| 519 | } |
| 520 | pass(SIGNED_LONG_LONG_WRITE_TEST_DESC_FMT_STR, src_ll); |
| 521 | } |
| 522 | |
| 523 | static |
| 524 | void run_test_signed_read(int src_i, long long src_ll) |
| 525 | { |
| 526 | unsigned int nrbits_i, nrbits_ll; |
| 527 | int readval_i; |
| 528 | union { |
| 529 | unsigned char c[TEST_LEN]; |
| 530 | unsigned short s[TEST_LEN/sizeof(unsigned short)]; |
| 531 | unsigned int i[TEST_LEN/sizeof(unsigned int)]; |
| 532 | unsigned long l[TEST_LEN/sizeof(unsigned long)]; |
| 533 | unsigned long long ll[TEST_LEN/sizeof(unsigned long long)]; |
| 534 | } target; |
| 535 | long long readval_ll; |
| 536 | unsigned int s, l; |
| 537 | |
| 538 | if (!src_i) |
| 539 | nrbits_i = 0; /* The number of bits needed to represent 0 is 0. */ |
| 540 | else if (src_i & 0x80000000U) |
| 541 | nrbits_i = fls_u32(~src_i) + 1; /* Find least significant bit conveying sign */ |
| 542 | else |
| 543 | nrbits_i = fls_u32(src_i) + 1; /* Keep sign at 0 */ |
| 544 | |
| 545 | /* Read to signed integer readval output. */ |
| 546 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 547 | for (l = nrbits_i; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 548 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 549 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 550 | bt_bitfield_read(target.c, signed char, s, l, &readval_i); |
| 551 | if (check_result(src_i, readval_i, target.c, signed char, |
| 552 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 553 | "%X")) { |
| 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.s, short, s, l, &readval_i); |
| 560 | if (check_result(src_i, readval_i, target.c, short, |
| 561 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 562 | "%X")) { |
| 563 | return; |
| 564 | } |
| 565 | |
| 566 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 567 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 568 | bt_bitfield_read(target.i, int, s, l, &readval_i); |
| 569 | if (check_result(src_i, readval_i, target.c, int, |
| 570 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 571 | "%X")) { |
| 572 | return; |
| 573 | } |
| 574 | |
| 575 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 576 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 577 | bt_bitfield_read(target.l, long, s, l, &readval_i); |
| 578 | if (check_result(src_i, readval_i, target.c, long, |
| 579 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 580 | "%X")) { |
| 581 | return; |
| 582 | } |
| 583 | |
| 584 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 585 | bt_bitfield_write(target.c, signed char, s, l, src_i); |
| 586 | bt_bitfield_read(target.ll, long long, s, l, &readval_i); |
| 587 | if (check_result(src_i, readval_i, target.c, long long, |
| 588 | s, l, SIGNED_INT_READ_TEST_DESC_FMT_STR, |
| 589 | "%X")) { |
| 590 | return; |
| 591 | } |
| 592 | } |
| 593 | } |
| 594 | pass(SIGNED_INT_READ_TEST_DESC_FMT_STR, src_i); |
| 595 | |
| 596 | if (!src_ll) |
| 597 | nrbits_ll = 0; /* The number of bits needed to represent 0 is 0. */ |
| 598 | if (src_ll & 0x8000000000000000ULL) |
| 599 | nrbits_ll = fls_u64(~src_ll) + 1; /* Find least significant bit conveying sign */ |
| 600 | else |
| 601 | nrbits_ll = fls_u64(src_ll) + 1; /* Keep sign at 0 */ |
| 602 | |
| 603 | /* Read to signed long long readval output. */ |
| 604 | for (s = 0; s < CHAR_BIT * TEST_LEN; s++) { |
| 605 | for (l = nrbits_ll; l <= (CHAR_BIT * TEST_LEN) - s; l++) { |
| 606 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 607 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 608 | bt_bitfield_read(target.c, signed char, s, l, &readval_ll); |
| 609 | if (check_result(src_ll, readval_ll, target.c, signed char, |
| 610 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 611 | "%llX")) { |
| 612 | return; |
| 613 | } |
| 614 | |
| 615 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 616 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 617 | bt_bitfield_read(target.s, short, s, l, &readval_ll); |
| 618 | if (check_result(src_ll, readval_ll, target.c, short, |
| 619 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 620 | "%llX")) { |
| 621 | return; |
| 622 | } |
| 623 | |
| 624 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 625 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 626 | bt_bitfield_read(target.i, int, s, l, &readval_ll); |
| 627 | if (check_result(src_ll, readval_ll, target.c, int, |
| 628 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 629 | "%llX")) { |
| 630 | return; |
| 631 | } |
| 632 | |
| 633 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 634 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 635 | bt_bitfield_read(target.l, long, s, l, &readval_ll); |
| 636 | if (check_result(src_ll, readval_ll, target.c, long, |
| 637 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 638 | "%llX")) { |
| 639 | return; |
| 640 | } |
| 641 | |
| 642 | init_byte_array(target.c, TEST_LEN, 0xFF); |
| 643 | bt_bitfield_write(target.c, signed char, s, l, src_ll); |
| 644 | bt_bitfield_read(target.ll, long long, s, l, &readval_ll); |
| 645 | if (check_result(src_ll, readval_ll, target.c, long long, |
| 646 | s, l, SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, |
| 647 | "%llX")) { |
| 648 | return; |
| 649 | } |
| 650 | } |
| 651 | } |
| 652 | pass(SIGNED_LONG_LONG_READ_TEST_DESC_FMT_STR, src_ll); |
| 653 | } |
| 654 | |
| 655 | static |
| 656 | void run_test_signed(int src_i, long long src_ll) |
| 657 | { |
| 658 | run_test_signed_write(src_i, src_ll); |
| 659 | run_test_signed_read(src_i, src_ll); |
| 660 | } |
| 661 | |
| 662 | static |
| 663 | void run_test(void) |
| 664 | { |
| 665 | int i; |
| 666 | |
| 667 | plan_tests(NR_TESTS * 8 + 24); |
| 668 | |
| 669 | srand(time(NULL)); |
| 670 | |
| 671 | run_test_unsigned(0, 0); |
| 672 | run_test_signed(0, 0); |
| 673 | run_test_unsigned(1, 1); |
| 674 | run_test_unsigned(~0U, ~0ULL); |
| 675 | run_test_signed(-1U, -1ULL); |
| 676 | run_test_signed(0x80000000U, 0x8000000000000000ULL); |
| 677 | |
| 678 | for (i = 0; i < NR_TESTS; i++) { |
| 679 | unsigned int src_ui = rand(); |
| 680 | unsigned long long src_ull = ((unsigned long long) (unsigned int) rand() << 32) | |
| 681 | (unsigned long long) (unsigned int) rand(); |
| 682 | |
| 683 | run_test_unsigned(src_ui, src_ull); |
| 684 | run_test_signed((int) src_ui, (long long) src_ull); |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | static |
| 689 | int print_encodings(unsigned long src, unsigned int shift, unsigned int len) |
| 690 | { |
| 691 | union { |
| 692 | unsigned char c[8]; |
| 693 | unsigned short s[4]; |
| 694 | unsigned int i[2]; |
| 695 | unsigned long l[2]; |
| 696 | unsigned long long ll[1]; |
| 697 | } target; |
| 698 | unsigned long long readval; |
| 699 | |
| 700 | init_byte_array(target.c, 8, 0xFF); |
| 701 | bt_bitfield_write(target.c, unsigned char, shift, len, src); |
| 702 | printf("bytewise\n"); |
| 703 | print_byte_array(target.c, 8); |
| 704 | |
| 705 | init_byte_array(target.c, 8, 0xFF); |
| 706 | bt_bitfield_write(target.s, unsigned short, shift, len, src); |
| 707 | printf("shortwise\n"); |
| 708 | print_byte_array(target.c, 8); |
| 709 | |
| 710 | init_byte_array(target.c, 8, 0xFF); |
| 711 | bt_bitfield_write(target.i, unsigned int, shift, len, src); |
| 712 | printf("intwise\n"); |
| 713 | print_byte_array(target.c, 8); |
| 714 | |
| 715 | init_byte_array(target.c, 8, 0xFF); |
| 716 | bt_bitfield_write(target.l, unsigned long, shift, len, src); |
| 717 | printf("longwise\n"); |
| 718 | print_byte_array(target.c, 8); |
| 719 | |
| 720 | init_byte_array(target.c, 8, 0xFF); |
| 721 | bt_bitfield_write(target.ll, unsigned long long, shift, len, src); |
| 722 | printf("lluwise\n"); |
| 723 | print_byte_array(target.c, 8); |
| 724 | |
| 725 | bt_bitfield_read(target.c, unsigned char, shift, len, &readval); |
| 726 | printf("read: %llX\n", readval); |
| 727 | print_byte_array(target.c, 8); |
| 728 | |
| 729 | return 0; |
| 730 | } |
| 731 | |
| 732 | int main(int argc, char **argv) |
| 733 | { |
| 734 | if (argc > 1) { |
| 735 | /* Print encodings */ |
| 736 | unsigned long src; |
| 737 | unsigned int shift, len; |
| 738 | |
| 739 | src = atoi(argv[1]); |
| 740 | if (argc > 2) |
| 741 | shift = atoi(argv[2]); |
| 742 | else |
| 743 | shift = 12; |
| 744 | if (argc > 3) |
| 745 | len = atoi(argv[3]); |
| 746 | else |
| 747 | len = 40; |
| 748 | return print_encodings(src, shift, len); |
| 749 | } |
| 750 | |
| 751 | /* Run tap-formatted tests */ |
| 752 | run_test(); |
| 753 | return exit_status(); |
| 754 | } |