| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * OpenSPARC T2 Processor File: libc.s |
| 5 | * Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved |
| 6 | * 4150 Network Circle, Santa Clara, California 95054, U.S.A. |
| 7 | * |
| 8 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; version 2 of the License. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU 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 02111-1307 USA |
| 22 | * |
| 23 | * For the avoidance of doubt, and except that if any non-GPL license |
| 24 | * choice is available it will apply instead, Sun elects to use only |
| 25 | * the General Public License version 2 (GPLv2) at this time for any |
| 26 | * software where a choice of GPL license versions is made |
| 27 | * available with the language indicating that GPLv2 or any later version |
| 28 | * may be used, or where a choice of which version of the GPL is applied is |
| 29 | * otherwise unspecified. |
| 30 | * |
| 31 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 32 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 33 | * have any questions. |
| 34 | * |
| 35 | * |
| 36 | * ========== Copyright Header End ============================================ |
| 37 | */ |
| 38 | #include "defines.h" |
| 39 | |
| 40 | !-------------------------------------------------------------------------- |
| 41 | ! tso diags related definitions |
| 42 | !-------------------------------------------------------------------------- |
| 43 | #define LOCK_TIMEOUT 0x100 |
| 44 | #define ENTRY(a) .align 32; .global a; a: |
| 45 | |
| 46 | |
| 47 | !-------------------------------------------------------------------------- |
| 48 | |
| 49 | .section .text |
| 50 | |
| 51 | .align 4 |
| 52 | .global pass |
| 53 | pass: |
| 54 | ta T_GOOD_TRAP |
| 55 | nop |
| 56 | |
| 57 | .align 4 |
| 58 | .global fail |
| 59 | fail: |
| 60 | ta T_BAD_TRAP |
| 61 | nop |
| 62 | |
| 63 | .align 4 |
| 64 | .global memalign |
| 65 | memalign: |
| 66 | save %sp, -192, %sp |
| 67 | |
| 68 | mov 1, %o1 |
| 69 | mov %i0, %o3 |
| 70 | mov %i1, %o2 |
| 71 | ta T_SYSCALL |
| 72 | nop |
| 73 | mov %o4, %o0 |
| 74 | |
| 75 | ret |
| 76 | restore %g0, %o0, %o0 |
| 77 | |
| 78 | #ifndef MY_PRINTF_ROUTINE |
| 79 | .align 4 |
| 80 | .global printf |
| 81 | printf: |
| 82 | ldx [%o0], %g0 |
| 83 | simics_printf: |
| 84 | nop |
| 85 | retl |
| 86 | nop |
| 87 | #endif |
| 88 | |
| 89 | #ifndef MY_EXIT_ROUTINE |
| 90 | .align 4 |
| 91 | .global exit |
| 92 | exit: |
| 93 | cmp %o0, 0 |
| 94 | bne exitfail |
| 95 | nop |
| 96 | call pass, 0 |
| 97 | nop |
| 98 | exitfail: |
| 99 | call fail, 0 |
| 100 | nop |
| 101 | #endif |
| 102 | |
| 103 | #ifndef MY_MPLOCK |
| 104 | !-------------------------------------------------------------------------- |
| 105 | ! tso diags related library functions |
| 106 | !-------------------------------------------------------------------------- |
| 107 | !-------------------------------------------------------------------------- |
| 108 | ! Ported frm MPCONS test: |
| 109 | ! Acquire a lock using ldstub - spins using ldub until lock is free |
| 110 | ! status = mplock(addr, owner, timeout, timecount) |
| 111 | ! Note: timecount is not used any more. |
| 112 | ! Note: simplfied for pre-silicon env purposes. |
| 113 | !-------------------------------------------------------------------------- |
| 114 | ENTRY(mplock) |
| 115 | save %sp, -0xc0, %sp |
| 116 | 1: |
| 117 | ldstub [%i0], %l1 ! try to acquire lock |
| 118 | tst %l1 ! did we get it? |
| 119 | bne 2f ! no, branch |
| 120 | nop |
| 121 | stb %i1, [%i0+1] ! got lock, set owner field |
| 122 | ret ! return success |
| 123 | restore %g0, 0, %o0 |
| 124 | 2: ! didn't get lock |
| 125 | mov %i2, %l2 ! set timeout limit |
| 126 | 3: |
| 127 | ldub [%i0], %l1 ! read lock value |
| 128 | tst %l1 ! is it free? |
| 129 | beq 1b ! yes, branch |
| 130 | |
| 131 | subcc %l2, 1, %l2 ! timecount expired? |
| 132 | bne 3b ! no, branch |
| 133 | nop |
| 134 | |
| 135 | ret ! timeout occurred |
| 136 | restore %g0, 1, %o0 ! return failure |
| 137 | #endif |
| 138 | !-------------------------------------------------------------------------- |
| 139 | ! Ported frm MPCONS test: |
| 140 | ! Acquire a lock using ldstub - spins using ldub until lock is free |
| 141 | ! status = mplockcasx(addr, owner, timeout, timecount) |
| 142 | ! Note: timecount is not used any more. |
| 143 | ! Note: simplfied for pre-silicon env purposes. |
| 144 | !-------------------------------------------------------------------------- |
| 145 | ENTRY(mplockcasx) |
| 146 | save %sp, -0xc0, %sp |
| 147 | 4: |
| 148 | add %i1, 0x100, %l1 |
| 149 | casx [%i0], %g0, %l1 ! try to get lock |
| 150 | |
| 151 | tst %l1 ! did we get it? |
| 152 | bne 5f ! no, branch |
| 153 | nop |
| 154 | stx %i1, [%i0+8] ! got lock, set owner field |
| 155 | ret ! return success |
| 156 | restore %g0, 0, %o0 |
| 157 | 5: ! didn't get lock |
| 158 | mov %i2, %l2 ! set timeout limit |
| 159 | 6: |
| 160 | ldx [%i0], %l1 ! read lock value |
| 161 | tst %l1 ! is it free? |
| 162 | beq 4b ! yes, branch |
| 163 | |
| 164 | subcc %l2, 1, %l2 ! timecount expired? |
| 165 | bne 6b ! no, branch |
| 166 | nop |
| 167 | |
| 168 | ret ! timeout occurred |
| 169 | restore %g0, 1, %o0 ! return failure |
| 170 | |
| 171 | |
| 172 | !-------------------------------------------------------------------------- |
| 173 | ! Load a dowbleword |
| 174 | ! data1 = loadd(&data2, addr) |
| 175 | !-------------------------------------------------------------------------- |
| 176 | ENTRY(loadd) |
| 177 | mov %o0, %o2 |
| 178 | ldd [%o1], %o0 |
| 179 | retl |
| 180 | st %o1, [%o2] |
| 181 | |
| 182 | !-------------------------------------------------------------------------- |
| 183 | ! Load an extended word |
| 184 | ! data = loadx(addr) |
| 185 | !-------------------------------------------------------------------------- |
| 186 | ENTRY(loadx) |
| 187 | retl |
| 188 | ldx [%o0], %o0 |
| 189 | |
| 190 | !-------------------------------------------------------------------------- |
| 191 | ! Load a halfword (short), one byte a time |
| 192 | ! data = loadh_by_bytes(addr) |
| 193 | !-------------------------------------------------------------------------- |
| 194 | ENTRY(loadh_by_bytes) |
| 195 | ldub [%o0], %o1 |
| 196 | sll %o1, 8, %o1 |
| 197 | ldub [%o0+1], %o0 |
| 198 | retl |
| 199 | or %o1, %o0, %o0 |
| 200 | |
| 201 | !-------------------------------------------------------------------------- |
| 202 | ! Load a word, 1 byte at a time |
| 203 | ! data = loadw_by_bytes(addr) |
| 204 | !-------------------------------------------------------------------------- |
| 205 | ENTRY(loadw_by_bytes) |
| 206 | ldub [%o0+3], %o4 |
| 207 | ldub [%o0+2], %o3 |
| 208 | sll %o3, 8, %o3 |
| 209 | or %o3, %o4, %o4 |
| 210 | ldub [%o0+1], %o2 |
| 211 | sll %o2, 16, %o2 |
| 212 | or %o2, %o4, %o4 |
| 213 | ldub [%o0], %o1 |
| 214 | sll %o1, 24, %o1 |
| 215 | retl |
| 216 | or %o1, %o4, %o0 |
| 217 | |
| 218 | !-------------------------------------------------------------------------- |
| 219 | ! Load a dowbleword, 1 byte at a time |
| 220 | ! data1 = loadd_by_bytes(&data2, addr) |
| 221 | !-------------------------------------------------------------------------- |
| 222 | ENTRY(loadd_by_bytes) |
| 223 | save %sp, -0xc0, %sp |
| 224 | ldub [%i1+3], %o0 |
| 225 | ldub [%i1+2], %o3 |
| 226 | sll %o3, 8, %o3 |
| 227 | or %o3, %o0, %o0 |
| 228 | ldub [%i1+1], %o2 |
| 229 | sll %o2, 16, %o2 |
| 230 | or %o2, %o0, %o0 |
| 231 | ldub [%i1], %o1 |
| 232 | sll %o1, 24, %o1 |
| 233 | or %o1, %o0, %o0 |
| 234 | ldub [%i1+7], %l3 |
| 235 | ldub [%i1+6], %l2 |
| 236 | sll %l2, 8, %l2 |
| 237 | or %l2, %l3, %l3 |
| 238 | ldub [%i1+5], %l1 |
| 239 | sll %l1, 16, %l1 |
| 240 | or %l1, %l3, %l3 |
| 241 | ldub [%i1+4], %l0 |
| 242 | sll %l0, 24, %l0 |
| 243 | or %l0, %l3, %l3 |
| 244 | st %l3, [%i0] |
| 245 | ret |
| 246 | restore %o0, %g0, %o0 |
| 247 | |
| 248 | |
| 249 | |
| 250 | !-------------------------------------------------------------------------- |
| 251 | ! Load a pointer, 1 byte at a time |
| 252 | ! addr = loadp_by_bytes(addr) |
| 253 | !-------------------------------------------------------------------------- |
| 254 | ENTRY(loadp_by_bytes) |
| 255 | save %sp, -0xc0, %sp |
| 256 | ldub [%i0+7], %o0 |
| 257 | ldub [%i0+6], %l3 |
| 258 | sllx %l3, 8, %l3 |
| 259 | or %l3, %o0, %o0 |
| 260 | ldub [%i0+5], %l2 |
| 261 | sllx %l2, 16, %l2 |
| 262 | or %l2, %o0, %o0 |
| 263 | ldub [%i0+4], %l1 |
| 264 | sllx %l1, 24, %l1 |
| 265 | or %l1, %o0, %o0 |
| 266 | ldub [%i0+3], %l0 |
| 267 | sllx %l0, 32, %l0 |
| 268 | or %l0, %o0, %o0 |
| 269 | ldub [%i0+2], %o3 |
| 270 | sllx %o3, 40, %o3 |
| 271 | or %o3, %o0, %o0 |
| 272 | ldub [%i0+1], %o2 |
| 273 | sllx %o2, 48, %o2 |
| 274 | or %o2, %o0, %o0 |
| 275 | ldub [%i0], %o1 |
| 276 | sllx %o1, 56, %o1 |
| 277 | or %o1, %o0, %o0 |
| 278 | ret |
| 279 | restore %o0, %g0, %o0 |
| 280 | |
| 281 | !-------------------------------------------------------------------------- |
| 282 | ! Store a block (64-bytes) |
| 283 | ! storeblock(addr) |
| 284 | !-------------------------------------------------------------------------- |
| 285 | ENTRY(storeblock) |
| 286 | retl |
| 287 | stda %f0, [%o0] 0xf0 |
| 288 | |
| 289 | !-------------------------------------------------------------------------- |
| 290 | ! load a block |
| 291 | ! loadblock(addr) |
| 292 | !-------------------------------------------------------------------------- |
| 293 | ENTRY(loadblock) |
| 294 | retl |
| 295 | ldda [%o0] 0xf0, %f0 |
| 296 | |
| 297 | !-------------------------------------------------------------------------- |
| 298 | ! loadb_func(addr) |
| 299 | !-------------------------------------------------------------------------- |
| 300 | ENTRY(loadb_func) |
| 301 | retl |
| 302 | ldub [%o0], %o0 |
| 303 | |
| 304 | !-------------------------------------------------------------------------- |
| 305 | ! These below were inline( functions in tests... |
| 306 | ! I made the assembly routines. |
| 307 | !-------------------------------------------------------------------------- |
| 308 | |
| 309 | !-------------------------------------------------------------------------- |
| 310 | ! Init a lock |
| 311 | ! initmplock(addr) |
| 312 | !-------------------------------------------------------------------------- |
| 313 | ENTRY(initmplock) |
| 314 | retl |
| 315 | sth %g0, [%o0] |
| 316 | |
| 317 | !-------------------------------------------------------------------------- |
| 318 | ! unlock |
| 319 | ! mpunlock(addr) |
| 320 | !-------------------------------------------------------------------------- |
| 321 | ENTRY(mpunlock) |
| 322 | retl |
| 323 | sth %g0, [%o0] |
| 324 | |
| 325 | !-------------------------------------------------------------------------- |
| 326 | ! unlock |
| 327 | ! mpunlockx(addr) |
| 328 | !-------------------------------------------------------------------------- |
| 329 | ENTRY(mpunlockx) |
| 330 | retl |
| 331 | stx %g0, [%o0] |
| 332 | |
| 333 | !-------------------------------------------------------------------------- |
| 334 | ! Load a word |
| 335 | ! data = loadw(addr) |
| 336 | !-------------------------------------------------------------------------- |
| 337 | ENTRY(loadw) |
| 338 | retl |
| 339 | ld [%o0], %o0 |
| 340 | |
| 341 | !-------------------------------------------------------------------------- |
| 342 | ! Load a halv word |
| 343 | ! data = loadh(addr) |
| 344 | !-------------------------------------------------------------------------- |
| 345 | ENTRY(loadh) |
| 346 | retl |
| 347 | lduh [%o0], %o0 |
| 348 | |
| 349 | !-------------------------------------------------------------------------- |
| 350 | ! Store a byte |
| 351 | ! storeb(data, addr) |
| 352 | !-------------------------------------------------------------------------- |
| 353 | ENTRY(storeb) |
| 354 | retl |
| 355 | stb %o0, [%o1] |
| 356 | |
| 357 | !-------------------------------------------------------------------------- |
| 358 | ! Store a word (integer) |
| 359 | ! storew(data, addr) |
| 360 | !-------------------------------------------------------------------------- |
| 361 | ENTRY(storew) |
| 362 | retl |
| 363 | st %o0, [%o1] |
| 364 | |
| 365 | !-------------------------------------------------------------------------- |
| 366 | ! Store a word (integer) |
| 367 | ! storex(data, addr) |
| 368 | !-------------------------------------------------------------------------- |
| 369 | ENTRY(storex) |
| 370 | retl |
| 371 | stx %o0, [%o1] |
| 372 | |
| 373 | !-------------------------------------------------------------------------- |
| 374 | ! Store a doubleword |
| 375 | ! stored(data1, data2, addr) |
| 376 | !-------------------------------------------------------------------------- |
| 377 | ENTRY(stored) |
| 378 | retl |
| 379 | std %o0, [%o2] |
| 380 | |
| 381 | !-------------------------------------------------------------------------- |
| 382 | ! Swap a word |
| 383 | ! data = swap(data, addr) |
| 384 | !-------------------------------------------------------------------------- |
| 385 | ENTRY(swap) |
| 386 | retl |
| 387 | swap [%o1], %o0 |
| 388 | |
| 389 | !-------------------------------------------------------------------------- |
| 390 | ! Compare and swap a word |
| 391 | ! data = casa(data, addr) |
| 392 | !-------------------------------------------------------------------------- |
| 393 | ENTRY(casa) |
| 394 | retl |
| 395 | casa [%o1] 0x80, %g0, %o0 |
| 396 | |
| 397 | !-------------------------------------------------------------------------- |
| 398 | ! Store a halfword (short), 1 byte at a time |
| 399 | ! storeh_by_bytes(data, addr) |
| 400 | !-------------------------------------------------------------------------- |
| 401 | ENTRY(storeh_by_bytes) |
| 402 | stb %o0, [%o1+1] |
| 403 | srl %o0, 8, %o2 |
| 404 | retl |
| 405 | stb %o2, [%o1] |
| 406 | |
| 407 | !-------------------------------------------------------------------------- |
| 408 | ! Store a word (integer), 1 byte at a time |
| 409 | ! storew_by_bytes(data, addr) |
| 410 | !-------------------------------------------------------------------------- |
| 411 | ENTRY(storew_by_bytes) |
| 412 | stb %o0, [%o1+3] |
| 413 | srl %o0, 24, %o2 |
| 414 | stb %o2, [%o1] |
| 415 | srl %o0, 16, %o3 |
| 416 | stb %o3, [%o1+1] |
| 417 | srl %o0, 8, %o4 |
| 418 | retl |
| 419 | stb %o4, [%o1+2] |
| 420 | |
| 421 | !-------------------------------------------------------------------------- |
| 422 | ! Prefetch a line for many reads - loads into E$ |
| 423 | ! prefetch_for_read_many(addr) |
| 424 | !-------------------------------------------------------------------------- |
| 425 | ENTRY(prefetch_for_read_many) |
| 426 | retl |
| 427 | prefetch [%o0], 0 |
| 428 | |
| 429 | !-------------------------------------------------------------------------- |
| 430 | ! Prefetch a line for one reads - loads into P$ |
| 431 | ! prefetch_for_read_once(addr) |
| 432 | !-------------------------------------------------------------------------- |
| 433 | ENTRY(prefetch_for_read_once) |
| 434 | retl |
| 435 | prefetch [%o0], 1 |
| 436 | |
| 437 | !-------------------------------------------------------------------------- |
| 438 | ! Prefetch a line for write |
| 439 | ! prefetch_for_write_many(addr) |
| 440 | !-------------------------------------------------------------------------- |
| 441 | ENTRY(prefetch_for_write_many) |
| 442 | retl |
| 443 | prefetch [%o0], 2 |
| 444 | |
| 445 | !-------------------------------------------------------------------------- |
| 446 | ! Prefetch a line for write |
| 447 | ! prefetch_for_write_once(addr) |
| 448 | !-------------------------------------------------------------------------- |
| 449 | ENTRY(prefetch_for_write_once) |
| 450 | retl |
| 451 | prefetch [%o0], 3 |
| 452 | |
| 453 | |
| 454 | !-------------------------------------------------------------------------- |
| 455 | ! membar_sync() |
| 456 | !-------------------------------------------------------------------------- |
| 457 | ENTRY(membar_sync) |
| 458 | retl |
| 459 | membar 0x40 |
| 460 | |
| 461 | !-------------------------------------------------------------------------- |
| 462 | ! membar_store_load() |
| 463 | !-------------------------------------------------------------------------- |
| 464 | ENTRY(membar_storeload) |
| 465 | retl |
| 466 | membar #StoreLoad |
| 467 | |
| 468 | !-------------------------------------------------------------------------- |
| 469 | ! ldstub(addr) |
| 470 | !-------------------------------------------------------------------------- |
| 471 | ENTRY(ldstub) |
| 472 | retl |
| 473 | ldstub [%o0], %o0 |
| 474 | |
| 475 | !-------------------------------------------------------------------------- |
| 476 | ! Load a pointer |
| 477 | ! addr1 = loadp(addr) |
| 478 | !-------------------------------------------------------------------------- |
| 479 | ENTRY(loadp) |
| 480 | retl |
| 481 | ldx [%o0], %o0 |
| 482 | |
| 483 | !-------------------------------------------------------------------------- |
| 484 | ! Store a pointer |
| 485 | ! storep(addr1, addr) |
| 486 | !-------------------------------------------------------------------------- |
| 487 | ENTRY(storep) |
| 488 | retl |
| 489 | stx %o0, [%o1] |
| 490 | |
| 491 | !================= end for now ============================================ |