| 1 | /* |
| 2 | * Copyright(c) 2020-2023 Qualcomm Innovation Center, Inc. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | /* |
| 19 | * This test checks various FP operations performed on Hexagon |
| 20 | */ |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include <stdint.h> |
| 24 | #include <float.h> |
| 25 | |
| 26 | int err; |
| 27 | |
| 28 | #include "hex_test.h" |
| 29 | |
| 30 | static void check_fpstatus_bit(uint32_t usr, uint32_t expect, uint32_t flag, |
| 31 | const char *name) |
| 32 | { |
| 33 | uint32_t bit = 1 << flag; |
| 34 | if ((usr & bit) != (expect & bit)) { |
| 35 | printf("ERROR %s: usr = %d, expect = %d\n", name, |
| 36 | (usr >> flag) & 1, (expect >> flag) & 1); |
| 37 | err++; |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | static void check_fpstatus(uint32_t usr, uint32_t expect) |
| 42 | { |
| 43 | check_fpstatus_bit(usr, expect, USR_FPINVF_BIT, "Invalid"); |
| 44 | check_fpstatus_bit(usr, expect, USR_FPDBZF_BIT, "Div by zero"); |
| 45 | check_fpstatus_bit(usr, expect, USR_FPOVFF_BIT, "Overflow"); |
| 46 | check_fpstatus_bit(usr, expect, USR_FPUNFF_BIT, "Underflow"); |
| 47 | check_fpstatus_bit(usr, expect, USR_FPINPF_BIT, "Inexact"); |
| 48 | } |
| 49 | |
| 50 | static void check_compare_exception(void) |
| 51 | { |
| 52 | uint32_t cmp; |
| 53 | uint32_t usr; |
| 54 | |
| 55 | /* Check that FP compares are quiet (don't raise any exceptions) */ |
| 56 | asm (CLEAR_FPSTATUS |
| 57 | "p0 = sfcmp.eq(%2, %3)\n\t" |
| 58 | "%0 = p0\n\t" |
| 59 | "%1 = usr\n\t" |
| 60 | : "=r"(cmp), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 61 | : "r2", "p0", "usr"); |
| 62 | check32(cmp, 0); |
| 63 | check_fpstatus(usr, 0); |
| 64 | |
| 65 | asm (CLEAR_FPSTATUS |
| 66 | "p0 = sfcmp.gt(%2, %3)\n\t" |
| 67 | "%0 = p0\n\t" |
| 68 | "%1 = usr\n\t" |
| 69 | : "=r"(cmp), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 70 | : "r2", "p0", "usr"); |
| 71 | check32(cmp, 0); |
| 72 | check_fpstatus(usr, 0); |
| 73 | |
| 74 | asm (CLEAR_FPSTATUS |
| 75 | "p0 = sfcmp.ge(%2, %3)\n\t" |
| 76 | "%0 = p0\n\t" |
| 77 | "%1 = usr\n\t" |
| 78 | : "=r"(cmp), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 79 | : "r2", "p0", "usr"); |
| 80 | check32(cmp, 0); |
| 81 | check_fpstatus(usr, 0); |
| 82 | |
| 83 | asm (CLEAR_FPSTATUS |
| 84 | "p0 = dfcmp.eq(%2, %3)\n\t" |
| 85 | "%0 = p0\n\t" |
| 86 | "%1 = usr\n\t" |
| 87 | : "=r"(cmp), "=r"(usr) : "r"(DF_QNaN), "r"(DF_any) |
| 88 | : "r2", "p0", "usr"); |
| 89 | check32(cmp, 0); |
| 90 | check_fpstatus(usr, 0); |
| 91 | |
| 92 | asm (CLEAR_FPSTATUS |
| 93 | "p0 = dfcmp.gt(%2, %3)\n\t" |
| 94 | "%0 = p0\n\t" |
| 95 | "%1 = usr\n\t" |
| 96 | : "=r"(cmp), "=r"(usr) : "r"(DF_QNaN), "r"(DF_any) |
| 97 | : "r2", "p0", "usr"); |
| 98 | check32(cmp, 0); |
| 99 | check_fpstatus(usr, 0); |
| 100 | |
| 101 | asm (CLEAR_FPSTATUS |
| 102 | "p0 = dfcmp.ge(%2, %3)\n\t" |
| 103 | "%0 = p0\n\t" |
| 104 | "%1 = usr\n\t" |
| 105 | : "=r"(cmp), "=r"(usr) : "r"(DF_QNaN), "r"(DF_any) |
| 106 | : "r2", "p0", "usr"); |
| 107 | check32(cmp, 0); |
| 108 | check_fpstatus(usr, 0); |
| 109 | } |
| 110 | |
| 111 | static void check_sfminmax(void) |
| 112 | { |
| 113 | uint32_t minmax; |
| 114 | uint32_t usr; |
| 115 | |
| 116 | /* |
| 117 | * Execute sfmin/sfmax instructions with one operand as NaN |
| 118 | * Check that |
| 119 | * Result is the other operand |
| 120 | * Invalid bit in USR is not set |
| 121 | */ |
| 122 | asm (CLEAR_FPSTATUS |
| 123 | "%0 = sfmin(%2, %3)\n\t" |
| 124 | "%1 = usr\n\t" |
| 125 | : "=r"(minmax), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 126 | : "r2", "usr"); |
| 127 | check32(minmax, SF_any); |
| 128 | check_fpstatus(usr, 0); |
| 129 | |
| 130 | asm (CLEAR_FPSTATUS |
| 131 | "%0 = sfmax(%2, %3)\n\t" |
| 132 | "%1 = usr\n\t" |
| 133 | : "=r"(minmax), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 134 | : "r2", "usr"); |
| 135 | check32(minmax, SF_any); |
| 136 | check_fpstatus(usr, 0); |
| 137 | |
| 138 | /* |
| 139 | * Execute sfmin/sfmax instructions with both operands NaN |
| 140 | * Check that |
| 141 | * Result is SF_HEX_NaN |
| 142 | * Invalid bit in USR is set |
| 143 | */ |
| 144 | asm (CLEAR_FPSTATUS |
| 145 | "%0 = sfmin(%2, %3)\n\t" |
| 146 | "%1 = usr\n\t" |
| 147 | : "=r"(minmax), "=r"(usr) : "r"(SF_QNaN), "r"(SF_QNaN) |
| 148 | : "r2", "usr"); |
| 149 | check32(minmax, SF_HEX_NaN); |
| 150 | check_fpstatus(usr, 0); |
| 151 | |
| 152 | asm (CLEAR_FPSTATUS |
| 153 | "%0 = sfmax(%2, %3)\n\t" |
| 154 | "%1 = usr\n\t" |
| 155 | : "=r"(minmax), "=r"(usr) : "r"(SF_QNaN), "r"(SF_QNaN) |
| 156 | : "r2", "usr"); |
| 157 | check32(minmax, SF_HEX_NaN); |
| 158 | check_fpstatus(usr, 0); |
| 159 | } |
| 160 | |
| 161 | static void check_dfminmax(void) |
| 162 | { |
| 163 | uint64_t minmax; |
| 164 | uint32_t usr; |
| 165 | |
| 166 | /* |
| 167 | * Execute dfmin/dfmax instructions with one operand as SNaN |
| 168 | * Check that |
| 169 | * Result is the other operand |
| 170 | * Invalid bit in USR is set |
| 171 | */ |
| 172 | asm (CLEAR_FPSTATUS |
| 173 | "%0 = dfmin(%2, %3)\n\t" |
| 174 | "%1 = usr\n\t" |
| 175 | : "=r"(minmax), "=r"(usr) : "r"(DF_SNaN), "r"(DF_any) |
| 176 | : "r2", "usr"); |
| 177 | check64(minmax, DF_any); |
| 178 | check_fpstatus(usr, USR_FPINVF); |
| 179 | |
| 180 | asm (CLEAR_FPSTATUS |
| 181 | "%0 = dfmax(%2, %3)\n\t" |
| 182 | "%1 = usr\n\t" |
| 183 | : "=r"(minmax), "=r"(usr) : "r"(DF_SNaN), "r"(DF_any) |
| 184 | : "r2", "usr"); |
| 185 | check64(minmax, DF_any); |
| 186 | check_fpstatus(usr, USR_FPINVF); |
| 187 | |
| 188 | /* |
| 189 | * Execute dfmin/dfmax instructions with one operand as QNaN |
| 190 | * Check that |
| 191 | * Result is the other operand |
| 192 | * No bit in USR is set |
| 193 | */ |
| 194 | asm (CLEAR_FPSTATUS |
| 195 | "%0 = dfmin(%2, %3)\n\t" |
| 196 | "%1 = usr\n\t" |
| 197 | : "=r"(minmax), "=r"(usr) : "r"(DF_QNaN), "r"(DF_any) |
| 198 | : "r2", "usr"); |
| 199 | check64(minmax, DF_any); |
| 200 | check_fpstatus(usr, 0); |
| 201 | |
| 202 | asm (CLEAR_FPSTATUS |
| 203 | "%0 = dfmax(%2, %3)\n\t" |
| 204 | "%1 = usr\n\t" |
| 205 | : "=r"(minmax), "=r"(usr) : "r"(DF_QNaN), "r"(DF_any) |
| 206 | : "r2", "usr"); |
| 207 | check64(minmax, DF_any); |
| 208 | check_fpstatus(usr, 0); |
| 209 | |
| 210 | /* |
| 211 | * Execute dfmin/dfmax instructions with both operands SNaN |
| 212 | * Check that |
| 213 | * Result is DF_HEX_NaN |
| 214 | * Invalid bit in USR is set |
| 215 | */ |
| 216 | asm (CLEAR_FPSTATUS |
| 217 | "%0 = dfmin(%2, %3)\n\t" |
| 218 | "%1 = usr\n\t" |
| 219 | : "=r"(minmax), "=r"(usr) : "r"(DF_SNaN), "r"(DF_SNaN) |
| 220 | : "r2", "usr"); |
| 221 | check64(minmax, DF_HEX_NaN); |
| 222 | check_fpstatus(usr, USR_FPINVF); |
| 223 | |
| 224 | asm (CLEAR_FPSTATUS |
| 225 | "%0 = dfmax(%2, %3)\n\t" |
| 226 | "%1 = usr\n\t" |
| 227 | : "=r"(minmax), "=r"(usr) : "r"(DF_SNaN), "r"(DF_SNaN) |
| 228 | : "r2", "usr"); |
| 229 | check64(minmax, DF_HEX_NaN); |
| 230 | check_fpstatus(usr, USR_FPINVF); |
| 231 | |
| 232 | /* |
| 233 | * Execute dfmin/dfmax instructions with both operands QNaN |
| 234 | * Check that |
| 235 | * Result is DF_HEX_NaN |
| 236 | * No bit in USR is set |
| 237 | */ |
| 238 | asm (CLEAR_FPSTATUS |
| 239 | "%0 = dfmin(%2, %3)\n\t" |
| 240 | "%1 = usr\n\t" |
| 241 | : "=r"(minmax), "=r"(usr) : "r"(DF_QNaN), "r"(DF_QNaN) |
| 242 | : "r2", "usr"); |
| 243 | check64(minmax, DF_HEX_NaN); |
| 244 | check_fpstatus(usr, 0); |
| 245 | |
| 246 | asm (CLEAR_FPSTATUS |
| 247 | "%0 = dfmax(%2, %3)\n\t" |
| 248 | "%1 = usr\n\t" |
| 249 | : "=r"(minmax), "=r"(usr) : "r"(DF_QNaN), "r"(DF_QNaN) |
| 250 | : "r2", "usr"); |
| 251 | check64(minmax, DF_HEX_NaN); |
| 252 | check_fpstatus(usr, 0); |
| 253 | } |
| 254 | |
| 255 | static void check_sfrecipa(void) |
| 256 | { |
| 257 | uint32_t result; |
| 258 | uint32_t usr; |
| 259 | uint32_t pred; |
| 260 | |
| 261 | /* |
| 262 | * Check that sfrecipa doesn't set status bits when |
| 263 | * a NaN with bit 22 non-zero is passed |
| 264 | */ |
| 265 | asm (CLEAR_FPSTATUS |
| 266 | "%0,p0 = sfrecipa(%2, %3)\n\t" |
| 267 | "%1 = usr\n\t" |
| 268 | : "=r"(result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 269 | : "r2", "p0", "usr"); |
| 270 | check32(result, SF_HEX_NaN); |
| 271 | check_fpstatus(usr, 0); |
| 272 | |
| 273 | asm (CLEAR_FPSTATUS |
| 274 | "%0,p0 = sfrecipa(%2, %3)\n\t" |
| 275 | "%1 = usr\n\t" |
| 276 | : "=r"(result), "=r"(usr) : "r"(SF_any), "r"(SF_QNaN) |
| 277 | : "r2", "p0", "usr"); |
| 278 | check32(result, SF_HEX_NaN); |
| 279 | check_fpstatus(usr, 0); |
| 280 | |
| 281 | asm (CLEAR_FPSTATUS |
| 282 | "%0,p0 = sfrecipa(%2, %2)\n\t" |
| 283 | "%1 = usr\n\t" |
| 284 | : "=r"(result), "=r"(usr) : "r"(SF_QNaN) |
| 285 | : "r2", "p0", "usr"); |
| 286 | check32(result, SF_HEX_NaN); |
| 287 | check_fpstatus(usr, 0); |
| 288 | |
| 289 | /* |
| 290 | * Check that sfrecipa doesn't set status bits when |
| 291 | * a NaN with bit 22 zero is passed |
| 292 | */ |
| 293 | asm (CLEAR_FPSTATUS |
| 294 | "%0,p0 = sfrecipa(%2, %3)\n\t" |
| 295 | "%1 = usr\n\t" |
| 296 | : "=r"(result), "=r"(usr) : "r"(SF_QNaN_special), "r"(SF_any) |
| 297 | : "r2", "p0", "usr"); |
| 298 | check32(result, SF_HEX_NaN); |
| 299 | check_fpstatus(usr, USR_FPINVF); |
| 300 | |
| 301 | asm (CLEAR_FPSTATUS |
| 302 | "%0,p0 = sfrecipa(%2, %3)\n\t" |
| 303 | "%1 = usr\n\t" |
| 304 | : "=r"(result), "=r"(usr) : "r"(SF_any), "r"(SF_QNaN_special) |
| 305 | : "r2", "p0", "usr"); |
| 306 | check32(result, SF_HEX_NaN); |
| 307 | check_fpstatus(usr, USR_FPINVF); |
| 308 | |
| 309 | asm (CLEAR_FPSTATUS |
| 310 | "%0,p0 = sfrecipa(%2, %2)\n\t" |
| 311 | "%1 = usr\n\t" |
| 312 | : "=r"(result), "=r"(usr) : "r"(SF_QNaN_special) |
| 313 | : "r2", "p0", "usr"); |
| 314 | check32(result, SF_HEX_NaN); |
| 315 | check_fpstatus(usr, USR_FPINVF); |
| 316 | |
| 317 | /* |
| 318 | * Check that sfrecipa properly sets divid-by-zero |
| 319 | */ |
| 320 | asm (CLEAR_FPSTATUS |
| 321 | "%0,p0 = sfrecipa(%2, %3)\n\t" |
| 322 | "%1 = usr\n\t" |
| 323 | : "=r"(result), "=r"(usr) : "r"(0x885dc960), "r"(0x80000000) |
| 324 | : "r2", "p0", "usr"); |
| 325 | check32(result, 0x3f800000); |
| 326 | check_fpstatus(usr, USR_FPDBZF); |
| 327 | |
| 328 | asm (CLEAR_FPSTATUS |
| 329 | "%0,p0 = sfrecipa(%2, %3)\n\t" |
| 330 | "%1 = usr\n\t" |
| 331 | : "=r"(result), "=r"(usr) : "r"(0x7f800000), "r"(SF_zero) |
| 332 | : "r2", "p0", "usr"); |
| 333 | check32(result, 0x3f800000); |
| 334 | check_fpstatus(usr, 0); |
| 335 | |
| 336 | /* |
| 337 | * Check that sfrecipa properly handles denorm |
| 338 | */ |
| 339 | asm (CLEAR_FPSTATUS |
| 340 | "%0,p0 = sfrecipa(%2, %3)\n\t" |
| 341 | "%1 = p0\n\t" |
| 342 | : "=r"(result), "=r"(pred) : "r"(SF_denorm), "r"(SF_random) |
| 343 | : "p0", "usr"); |
| 344 | check32(result, 0x6a920001); |
| 345 | check32(pred, 0x80); |
| 346 | } |
| 347 | |
| 348 | static void check_canonical_NaN(void) |
| 349 | { |
| 350 | uint32_t sf_result; |
| 351 | uint64_t df_result; |
| 352 | uint32_t usr; |
| 353 | |
| 354 | /* Check that each FP instruction properly returns SF_HEX_NaN/DF_HEX_NaN */ |
| 355 | asm(CLEAR_FPSTATUS |
| 356 | "%0 = sfadd(%2, %3)\n\t" |
| 357 | "%1 = usr\n\t" |
| 358 | : "=r"(sf_result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 359 | : "r2", "usr"); |
| 360 | check32(sf_result, SF_HEX_NaN); |
| 361 | check_fpstatus(usr, 0); |
| 362 | |
| 363 | asm(CLEAR_FPSTATUS |
| 364 | "%0 = sfsub(%2, %3)\n\t" |
| 365 | "%1 = usr\n\t" |
| 366 | : "=r"(sf_result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 367 | : "r2", "usr"); |
| 368 | check32(sf_result, SF_HEX_NaN); |
| 369 | check_fpstatus(usr, 0); |
| 370 | |
| 371 | asm(CLEAR_FPSTATUS |
| 372 | "%0 = sfmpy(%2, %3)\n\t" |
| 373 | "%1 = usr\n\t" |
| 374 | : "=r"(sf_result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 375 | : "r2", "usr"); |
| 376 | check32(sf_result, SF_HEX_NaN); |
| 377 | check_fpstatus(usr, 0); |
| 378 | |
| 379 | sf_result = SF_zero; |
| 380 | asm(CLEAR_FPSTATUS |
| 381 | "%0 += sfmpy(%2, %3)\n\t" |
| 382 | "%1 = usr\n\t" |
| 383 | : "+r"(sf_result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 384 | : "r2", "usr"); |
| 385 | check32(sf_result, SF_HEX_NaN); |
| 386 | check_fpstatus(usr, 0); |
| 387 | |
| 388 | sf_result = SF_zero; |
| 389 | asm(CLEAR_FPSTATUS |
| 390 | "p0 = !cmp.eq(r0, r0)\n\t" |
| 391 | "%0 += sfmpy(%2, %3, p0):scale\n\t" |
| 392 | "%1 = usr\n\t" |
| 393 | : "+r"(sf_result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 394 | : "r2", "usr", "p0"); |
| 395 | check32(sf_result, SF_HEX_NaN); |
| 396 | check_fpstatus(usr, 0); |
| 397 | |
| 398 | sf_result = SF_zero; |
| 399 | asm(CLEAR_FPSTATUS |
| 400 | "%0 -= sfmpy(%2, %3)\n\t" |
| 401 | "%1 = usr\n\t" |
| 402 | : "+r"(sf_result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 403 | : "r2", "usr"); |
| 404 | check32(sf_result, SF_HEX_NaN); |
| 405 | check_fpstatus(usr, 0); |
| 406 | |
| 407 | sf_result = SF_zero; |
| 408 | asm(CLEAR_FPSTATUS |
| 409 | "%0 += sfmpy(%2, %3):lib\n\t" |
| 410 | "%1 = usr\n\t" |
| 411 | : "+r"(sf_result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 412 | : "r2", "usr"); |
| 413 | check32(sf_result, SF_HEX_NaN); |
| 414 | check_fpstatus(usr, 0); |
| 415 | |
| 416 | sf_result = SF_zero; |
| 417 | asm(CLEAR_FPSTATUS |
| 418 | "%0 -= sfmpy(%2, %3):lib\n\t" |
| 419 | "%1 = usr\n\t" |
| 420 | : "+r"(sf_result), "=r"(usr) : "r"(SF_QNaN), "r"(SF_any) |
| 421 | : "r2", "usr"); |
| 422 | check32(sf_result, SF_HEX_NaN); |
| 423 | check_fpstatus(usr, 0); |
| 424 | |
| 425 | asm(CLEAR_FPSTATUS |
| 426 | "%0 = convert_df2sf(%2)\n\t" |
| 427 | "%1 = usr\n\t" |
| 428 | : "=r"(sf_result), "=r"(usr) : "r"(DF_QNaN) |
| 429 | : "r2", "usr"); |
| 430 | check32(sf_result, SF_HEX_NaN); |
| 431 | check_fpstatus(usr, 0); |
| 432 | |
| 433 | asm(CLEAR_FPSTATUS |
| 434 | "%0 = dfadd(%2, %3)\n\t" |
| 435 | "%1 = usr\n\t" |
| 436 | : "=r"(df_result), "=r"(usr) : "r"(DF_QNaN), "r"(DF_any) |
| 437 | : "r2", "usr"); |
| 438 | check64(df_result, DF_HEX_NaN); |
| 439 | check_fpstatus(usr, 0); |
| 440 | |
| 441 | asm(CLEAR_FPSTATUS |
| 442 | "%0 = dfsub(%2, %3)\n\t" |
| 443 | "%1 = usr\n\t" |
| 444 | : "=r"(df_result), "=r"(usr) : "r"(DF_QNaN), "r"(DF_any) |
| 445 | : "r2", "usr"); |
| 446 | check64(df_result, DF_HEX_NaN); |
| 447 | check_fpstatus(usr, 0); |
| 448 | |
| 449 | asm(CLEAR_FPSTATUS |
| 450 | "%0 = convert_sf2df(%2)\n\t" |
| 451 | "%1 = usr\n\t" |
| 452 | : "=r"(df_result), "=r"(usr) : "r"(SF_QNaN) |
| 453 | : "r2", "usr"); |
| 454 | check64(df_result, DF_HEX_NaN); |
| 455 | check_fpstatus(usr, 0); |
| 456 | } |
| 457 | |
| 458 | static void check_invsqrta(void) |
| 459 | { |
| 460 | uint32_t result; |
| 461 | uint32_t predval; |
| 462 | |
| 463 | asm volatile("%0,p0 = sfinvsqrta(%2)\n\t" |
| 464 | "%1 = p0\n\t" |
| 465 | : "+r"(result), "=r"(predval) |
| 466 | : "r"(0x7f800000) |
| 467 | : "p0"); |
| 468 | check32(result, 0xff800000); |
| 469 | check32(predval, 0x0); |
| 470 | } |
| 471 | |
| 472 | static void check_sffixupn(void) |
| 473 | { |
| 474 | uint32_t result; |
| 475 | |
| 476 | /* Check that sffixupn properly deals with denorm */ |
| 477 | asm volatile("%0 = sffixupn(%1, %2)\n\t" |
| 478 | : "=r"(result) |
| 479 | : "r"(SF_random), "r"(SF_denorm)); |
| 480 | check32(result, 0x246001d6); |
| 481 | } |
| 482 | |
| 483 | static void check_sffixupd(void) |
| 484 | { |
| 485 | uint32_t result; |
| 486 | |
| 487 | /* Check that sffixupd properly deals with denorm */ |
| 488 | asm volatile("%0 = sffixupd(%1, %2)\n\t" |
| 489 | : "=r"(result) |
| 490 | : "r"(SF_denorm), "r"(SF_random)); |
| 491 | check32(result, 0x146001d6); |
| 492 | } |
| 493 | |
| 494 | static void check_sffms(void) |
| 495 | { |
| 496 | uint32_t result; |
| 497 | |
| 498 | /* Check that sffms properly deals with -0 */ |
| 499 | result = SF_zero_neg; |
| 500 | asm ("%0 -= sfmpy(%1 , %2)\n\t" |
| 501 | : "+r"(result) |
| 502 | : "r"(SF_zero), "r"(SF_zero) |
| 503 | : "r12", "r8"); |
| 504 | check32(result, SF_zero_neg); |
| 505 | |
| 506 | result = SF_zero; |
| 507 | asm ("%0 -= sfmpy(%1 , %2)\n\t" |
| 508 | : "+r"(result) |
| 509 | : "r"(SF_zero_neg), "r"(SF_zero) |
| 510 | : "r12", "r8"); |
| 511 | check32(result, SF_zero); |
| 512 | |
| 513 | result = SF_zero; |
| 514 | asm ("%0 -= sfmpy(%1 , %2)\n\t" |
| 515 | : "+r"(result) |
| 516 | : "r"(SF_zero), "r"(SF_zero_neg) |
| 517 | : "r12", "r8"); |
| 518 | check32(result, SF_zero); |
| 519 | } |
| 520 | |
| 521 | static void check_float2int_convs() |
| 522 | { |
| 523 | uint32_t res32; |
| 524 | uint64_t res64; |
| 525 | uint32_t usr; |
| 526 | |
| 527 | /* |
| 528 | * Check that the various forms of float-to-unsigned |
| 529 | * check sign before rounding |
| 530 | */ |
| 531 | asm(CLEAR_FPSTATUS |
| 532 | "%0 = convert_sf2uw(%2)\n\t" |
| 533 | "%1 = usr\n\t" |
| 534 | : "=r"(res32), "=r"(usr) : "r"(SF_small_neg) |
| 535 | : "r2", "usr"); |
| 536 | check32(res32, 0); |
| 537 | check_fpstatus(usr, USR_FPINVF); |
| 538 | |
| 539 | asm(CLEAR_FPSTATUS |
| 540 | "%0 = convert_sf2uw(%2):chop\n\t" |
| 541 | "%1 = usr\n\t" |
| 542 | : "=r"(res32), "=r"(usr) : "r"(SF_small_neg) |
| 543 | : "r2", "usr"); |
| 544 | check32(res32, 0); |
| 545 | check_fpstatus(usr, USR_FPINVF); |
| 546 | |
| 547 | asm(CLEAR_FPSTATUS |
| 548 | "%0 = convert_sf2ud(%2)\n\t" |
| 549 | "%1 = usr\n\t" |
| 550 | : "=r"(res64), "=r"(usr) : "r"(SF_small_neg) |
| 551 | : "r2", "usr"); |
| 552 | check64(res64, 0); |
| 553 | check_fpstatus(usr, USR_FPINVF); |
| 554 | |
| 555 | asm(CLEAR_FPSTATUS |
| 556 | "%0 = convert_sf2ud(%2):chop\n\t" |
| 557 | "%1 = usr\n\t" |
| 558 | : "=r"(res64), "=r"(usr) : "r"(SF_small_neg) |
| 559 | : "r2", "usr"); |
| 560 | check64(res64, 0); |
| 561 | check_fpstatus(usr, USR_FPINVF); |
| 562 | |
| 563 | asm(CLEAR_FPSTATUS |
| 564 | "%0 = convert_df2uw(%2)\n\t" |
| 565 | "%1 = usr\n\t" |
| 566 | : "=r"(res32), "=r"(usr) : "r"(DF_small_neg) |
| 567 | : "r2", "usr"); |
| 568 | check32(res32, 0); |
| 569 | check_fpstatus(usr, USR_FPINVF); |
| 570 | |
| 571 | asm(CLEAR_FPSTATUS |
| 572 | "%0 = convert_df2uw(%2):chop\n\t" |
| 573 | "%1 = usr\n\t" |
| 574 | : "=r"(res32), "=r"(usr) : "r"(DF_small_neg) |
| 575 | : "r2", "usr"); |
| 576 | check32(res32, 0); |
| 577 | check_fpstatus(usr, USR_FPINVF); |
| 578 | |
| 579 | asm(CLEAR_FPSTATUS |
| 580 | "%0 = convert_df2ud(%2)\n\t" |
| 581 | "%1 = usr\n\t" |
| 582 | : "=r"(res64), "=r"(usr) : "r"(DF_small_neg) |
| 583 | : "r2", "usr"); |
| 584 | check64(res64, 0); |
| 585 | check_fpstatus(usr, USR_FPINVF); |
| 586 | |
| 587 | asm(CLEAR_FPSTATUS |
| 588 | "%0 = convert_df2ud(%2):chop\n\t" |
| 589 | "%1 = usr\n\t" |
| 590 | : "=r"(res64), "=r"(usr) : "r"(DF_small_neg) |
| 591 | : "r2", "usr"); |
| 592 | check64(res64, 0); |
| 593 | check_fpstatus(usr, USR_FPINVF); |
| 594 | |
| 595 | /* |
| 596 | * Check that the various forms of float-to-signed return -1 for NaN |
| 597 | */ |
| 598 | asm(CLEAR_FPSTATUS |
| 599 | "%0 = convert_sf2w(%2)\n\t" |
| 600 | "%1 = usr\n\t" |
| 601 | : "=r"(res32), "=r"(usr) : "r"(SF_QNaN) |
| 602 | : "r2", "usr"); |
| 603 | check32(res32, -1); |
| 604 | check_fpstatus(usr, USR_FPINVF); |
| 605 | |
| 606 | asm(CLEAR_FPSTATUS |
| 607 | "%0 = convert_sf2w(%2):chop\n\t" |
| 608 | "%1 = usr\n\t" |
| 609 | : "=r"(res32), "=r"(usr) : "r"(SF_QNaN) |
| 610 | : "r2", "usr"); |
| 611 | check32(res32, -1); |
| 612 | check_fpstatus(usr, USR_FPINVF); |
| 613 | |
| 614 | asm(CLEAR_FPSTATUS |
| 615 | "%0 = convert_sf2d(%2)\n\t" |
| 616 | "%1 = usr\n\t" |
| 617 | : "=r"(res64), "=r"(usr) : "r"(SF_QNaN) |
| 618 | : "r2", "usr"); |
| 619 | check64(res64, -1); |
| 620 | check_fpstatus(usr, USR_FPINVF); |
| 621 | |
| 622 | asm(CLEAR_FPSTATUS |
| 623 | "%0 = convert_sf2d(%2):chop\n\t" |
| 624 | "%1 = usr\n\t" |
| 625 | : "=r"(res64), "=r"(usr) : "r"(SF_QNaN) |
| 626 | : "r2", "usr"); |
| 627 | check64(res64, -1); |
| 628 | check_fpstatus(usr, USR_FPINVF); |
| 629 | |
| 630 | asm(CLEAR_FPSTATUS |
| 631 | "%0 = convert_df2w(%2)\n\t" |
| 632 | "%1 = usr\n\t" |
| 633 | : "=r"(res32), "=r"(usr) : "r"(DF_QNaN) |
| 634 | : "r2", "usr"); |
| 635 | check32(res32, -1); |
| 636 | check_fpstatus(usr, USR_FPINVF); |
| 637 | |
| 638 | asm(CLEAR_FPSTATUS |
| 639 | "%0 = convert_df2w(%2):chop\n\t" |
| 640 | "%1 = usr\n\t" |
| 641 | : "=r"(res32), "=r"(usr) : "r"(DF_QNaN) |
| 642 | : "r2", "usr"); |
| 643 | check32(res32, -1); |
| 644 | check_fpstatus(usr, USR_FPINVF); |
| 645 | |
| 646 | asm(CLEAR_FPSTATUS |
| 647 | "%0 = convert_df2d(%2)\n\t" |
| 648 | "%1 = usr\n\t" |
| 649 | : "=r"(res64), "=r"(usr) : "r"(DF_QNaN) |
| 650 | : "r2", "usr"); |
| 651 | check64(res64, -1); |
| 652 | check_fpstatus(usr, USR_FPINVF); |
| 653 | |
| 654 | asm(CLEAR_FPSTATUS |
| 655 | "%0 = convert_df2d(%2):chop\n\t" |
| 656 | "%1 = usr\n\t" |
| 657 | : "=r"(res64), "=r"(usr) : "r"(DF_QNaN) |
| 658 | : "r2", "usr"); |
| 659 | check64(res64, -1); |
| 660 | check_fpstatus(usr, USR_FPINVF); |
| 661 | } |
| 662 | |
| 663 | static void check_float_consts(void) |
| 664 | { |
| 665 | uint32_t res32; |
| 666 | uint64_t res64; |
| 667 | |
| 668 | asm("%0 = sfmake(#%1):neg\n\t" : "=r"(res32) : "i"(0xf)); |
| 669 | check32(res32, 0xbc9e0000); |
| 670 | |
| 671 | asm("%0 = sfmake(#%1):pos\n\t" : "=r"(res32) : "i"(0xf)); |
| 672 | check32(res32, 0x3c9e0000); |
| 673 | |
| 674 | asm("%0 = dfmake(#%1):neg\n\t" : "=r"(res64) : "i"(0xf)); |
| 675 | check64(res64, 0xbf93c00000000000ULL); |
| 676 | |
| 677 | asm("%0 = dfmake(#%1):pos\n\t" : "=r"(res64) : "i"(0xf)); |
| 678 | check64(res64, 0x3f93c00000000000ULL); |
| 679 | } |
| 680 | |
| 681 | static inline uint64_t dfmpyll(double x, double y) |
| 682 | { |
| 683 | uint64_t res64; |
| 684 | asm("%0 = dfmpyll(%1, %2)" : "=r"(res64) : "r"(x), "r"(y)); |
| 685 | return res64; |
| 686 | } |
| 687 | |
| 688 | static inline uint64_t dfmpylh(double acc, double x, double y) |
| 689 | { |
| 690 | uint64_t res64 = *(uint64_t *)&acc; |
| 691 | asm("%0 += dfmpylh(%1, %2)" : "+r"(res64) : "r"(x), "r"(y)); |
| 692 | return res64; |
| 693 | } |
| 694 | |
| 695 | static void check_dfmpyxx(void) |
| 696 | { |
| 697 | uint64_t res64; |
| 698 | |
| 699 | res64 = dfmpyll(DBL_MIN, DBL_MIN); |
| 700 | check64(res64, 0ULL); |
| 701 | res64 = dfmpyll(-1.0, DBL_MIN); |
| 702 | check64(res64, 0ULL); |
| 703 | res64 = dfmpyll(DBL_MAX, DBL_MAX); |
| 704 | check64(res64, 0x1fffffffdULL); |
| 705 | |
| 706 | res64 = dfmpylh(DBL_MIN, DBL_MIN, DBL_MIN); |
| 707 | check64(res64, 0x10000000000000ULL); |
| 708 | res64 = dfmpylh(-1.0, DBL_MAX, DBL_MIN); |
| 709 | check64(res64, 0xc00fffffffe00000ULL); |
| 710 | res64 = dfmpylh(DBL_MAX, 0.0, -1.0); |
| 711 | check64(res64, 0x7fefffffffffffffULL); |
| 712 | } |
| 713 | |
| 714 | int main() |
| 715 | { |
| 716 | check_compare_exception(); |
| 717 | check_sfminmax(); |
| 718 | check_dfminmax(); |
| 719 | check_sfrecipa(); |
| 720 | check_canonical_NaN(); |
| 721 | check_invsqrta(); |
| 722 | check_sffixupn(); |
| 723 | check_sffixupd(); |
| 724 | check_sffms(); |
| 725 | check_float2int_convs(); |
| 726 | check_float_consts(); |
| 727 | check_dfmpyxx(); |
| 728 | |
| 729 | puts(err ? "FAIL" : "PASS"); |
| 730 | return err ? 1 : 0; |
| 731 | } |