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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 | /* SPDX-License-Identifier: LGPL-2.1 OR MIT */ /* * rseq-ppc-bits.h * * (C) Copyright 2016-2018 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> * (C) Copyright 2016-2018 - Boqun Feng <boqun.feng@gmail.com> */ #include "rseq-bits-template.h" #if defined(RSEQ_TEMPLATE_MO_RELAXED) && \ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) static inline __attribute__((always_inline)) int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t newv, int cpu) { RSEQ_INJECT_C(9) __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail]) #ifdef RSEQ_COMPARE_TWICE RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1]) RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2]) #endif /* Start rseq by storing table entry pointer into rseq_cs. */ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) RSEQ_INJECT_ASM(3) /* cmp @v equal to @expect */ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail]) RSEQ_INJECT_ASM(4) #ifdef RSEQ_COMPARE_TWICE /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1]) /* cmp @v equal to @expect */ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2]) #endif /* final store */ RSEQ_ASM_OP_FINAL_STORE(newv, v, 2) RSEQ_INJECT_ASM(5) RSEQ_ASM_DEFINE_ABORT(4, abort) : /* gcc asm goto does not allow outputs */ : [cpu_id] "r" (cpu), [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD), [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr), [v] "m" (*v), [expect] "r" (expect), [newv] "r" (newv) RSEQ_INJECT_INPUT : "memory", "cc", "r17" RSEQ_INJECT_CLOBBER : abort, cmpfail #ifdef RSEQ_COMPARE_TWICE , error1, error2 #endif ); rseq_after_asm_goto(); return 0; abort: rseq_after_asm_goto(); RSEQ_INJECT_FAILED return -1; cmpfail: rseq_after_asm_goto(); return 1; #ifdef RSEQ_COMPARE_TWICE error1: rseq_after_asm_goto(); rseq_bug("cpu_id comparison failed"); error2: rseq_after_asm_goto(); rseq_bug("expected value comparison failed"); #endif } static inline __attribute__((always_inline)) int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpnev_storeoffp_load)(intptr_t *v, intptr_t expectnot, long voffp, intptr_t *load, int cpu) { RSEQ_INJECT_C(9) __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail]) #ifdef RSEQ_COMPARE_TWICE RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1]) RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2]) #endif /* Start rseq by storing table entry pointer into rseq_cs. */ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) RSEQ_INJECT_ASM(3) /* cmp @v not equal to @expectnot */ RSEQ_ASM_OP_CMPNE(v, expectnot, %l[cmpfail]) RSEQ_INJECT_ASM(4) #ifdef RSEQ_COMPARE_TWICE /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1]) /* cmp @v not equal to @expectnot */ RSEQ_ASM_OP_CMPNE(v, expectnot, %l[error2]) #endif /* load the value of @v */ RSEQ_ASM_OP_R_LOAD(v) /* store it in @load */ RSEQ_ASM_OP_R_STORE(load) /* dereference voffp(v) */ RSEQ_ASM_OP_R_LOADX(voffp) /* final store the value at voffp(v) */ RSEQ_ASM_OP_R_FINAL_STORE(v, 2) RSEQ_INJECT_ASM(5) RSEQ_ASM_DEFINE_ABORT(4, abort) : /* gcc asm goto does not allow outputs */ : [cpu_id] "r" (cpu), [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD), [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr), /* final store input */ [v] "m" (*v), [expectnot] "r" (expectnot), [voffp] "b" (voffp), [load] "m" (*load) RSEQ_INJECT_INPUT : "memory", "cc", "r17" RSEQ_INJECT_CLOBBER : abort, cmpfail #ifdef RSEQ_COMPARE_TWICE , error1, error2 #endif ); rseq_after_asm_goto(); return 0; abort: rseq_after_asm_goto(); RSEQ_INJECT_FAILED return -1; cmpfail: rseq_after_asm_goto(); return 1; #ifdef RSEQ_COMPARE_TWICE error1: rseq_after_asm_goto(); rseq_bug("cpu_id comparison failed"); error2: rseq_after_asm_goto(); rseq_bug("expected value comparison failed"); #endif } static inline __attribute__((always_inline)) int RSEQ_TEMPLATE_IDENTIFIER(rseq_addv)(intptr_t *v, intptr_t count, int cpu) { RSEQ_INJECT_C(9) __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */ #ifdef RSEQ_COMPARE_TWICE RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1]) #endif /* Start rseq by storing table entry pointer into rseq_cs. */ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) RSEQ_INJECT_ASM(3) #ifdef RSEQ_COMPARE_TWICE /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1]) #endif /* load the value of @v */ RSEQ_ASM_OP_R_LOAD(v) /* add @count to it */ RSEQ_ASM_OP_R_ADD(count) /* final store */ RSEQ_ASM_OP_R_FINAL_STORE(v, 2) RSEQ_INJECT_ASM(4) RSEQ_ASM_DEFINE_ABORT(4, abort) : /* gcc asm goto does not allow outputs */ : [cpu_id] "r" (cpu), [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD), [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr), /* final store input */ [v] "m" (*v), [count] "r" (count) RSEQ_INJECT_INPUT : "memory", "cc", "r17" RSEQ_INJECT_CLOBBER : abort #ifdef RSEQ_COMPARE_TWICE , error1 #endif ); rseq_after_asm_goto(); return 0; abort: rseq_after_asm_goto(); RSEQ_INJECT_FAILED return -1; #ifdef RSEQ_COMPARE_TWICE error1: rseq_after_asm_goto(); rseq_bug("cpu_id comparison failed"); #endif } static inline __attribute__((always_inline)) int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_cmpeqv_storev)(intptr_t *v, intptr_t expect, intptr_t *v2, intptr_t expect2, intptr_t newv, int cpu) { RSEQ_INJECT_C(9) __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail]) #ifdef RSEQ_COMPARE_TWICE RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1]) RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2]) RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error3]) #endif /* Start rseq by storing table entry pointer into rseq_cs. */ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) RSEQ_INJECT_ASM(3) /* cmp @v equal to @expect */ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail]) RSEQ_INJECT_ASM(4) /* cmp @v2 equal to @expct2 */ RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[cmpfail]) RSEQ_INJECT_ASM(5) #ifdef RSEQ_COMPARE_TWICE /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1]) /* cmp @v equal to @expect */ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2]) /* cmp @v2 equal to @expct2 */ RSEQ_ASM_OP_CMPEQ(v2, expect2, %l[error3]) #endif /* final store */ RSEQ_ASM_OP_FINAL_STORE(newv, v, 2) RSEQ_INJECT_ASM(6) RSEQ_ASM_DEFINE_ABORT(4, abort) : /* gcc asm goto does not allow outputs */ : [cpu_id] "r" (cpu), [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD), [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr), /* cmp2 input */ [v2] "m" (*v2), [expect2] "r" (expect2), /* final store input */ [v] "m" (*v), [expect] "r" (expect), [newv] "r" (newv) RSEQ_INJECT_INPUT : "memory", "cc", "r17" RSEQ_INJECT_CLOBBER : abort, cmpfail #ifdef RSEQ_COMPARE_TWICE , error1, error2, error3 #endif ); rseq_after_asm_goto(); return 0; abort: rseq_after_asm_goto(); RSEQ_INJECT_FAILED return -1; cmpfail: rseq_after_asm_goto(); return 1; #ifdef RSEQ_COMPARE_TWICE error1: rseq_after_asm_goto(); rseq_bug("cpu_id comparison failed"); error2: rseq_after_asm_goto(); rseq_bug("1st expected value comparison failed"); error3: rseq_after_asm_goto(); rseq_bug("2nd expected value comparison failed"); #endif } #endif /* #if defined(RSEQ_TEMPLATE_MO_RELAXED) && (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */ #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && \ (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) static inline __attribute__((always_inline)) int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trystorev_storev)(intptr_t *v, intptr_t expect, intptr_t *v2, intptr_t newv2, intptr_t newv, int cpu) { RSEQ_INJECT_C(9) __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail]) #ifdef RSEQ_COMPARE_TWICE RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1]) RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2]) #endif /* Start rseq by storing table entry pointer into rseq_cs. */ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) RSEQ_INJECT_ASM(3) /* cmp @v equal to @expect */ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail]) RSEQ_INJECT_ASM(4) #ifdef RSEQ_COMPARE_TWICE /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1]) /* cmp @v equal to @expect */ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2]) #endif /* try store */ RSEQ_ASM_OP_STORE(newv2, v2) RSEQ_INJECT_ASM(5) #ifdef RSEQ_TEMPLATE_MO_RELEASE /* for 'release' */ "lwsync\n\t" #endif /* final store */ RSEQ_ASM_OP_FINAL_STORE(newv, v, 2) RSEQ_INJECT_ASM(6) RSEQ_ASM_DEFINE_ABORT(4, abort) : /* gcc asm goto does not allow outputs */ : [cpu_id] "r" (cpu), [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD), [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr), /* try store input */ [v2] "m" (*v2), [newv2] "r" (newv2), /* final store input */ [v] "m" (*v), [expect] "r" (expect), [newv] "r" (newv) RSEQ_INJECT_INPUT : "memory", "cc", "r17" RSEQ_INJECT_CLOBBER : abort, cmpfail #ifdef RSEQ_COMPARE_TWICE , error1, error2 #endif ); rseq_after_asm_goto(); return 0; abort: rseq_after_asm_goto(); RSEQ_INJECT_FAILED return -1; cmpfail: rseq_after_asm_goto(); return 1; #ifdef RSEQ_COMPARE_TWICE error1: rseq_after_asm_goto(); rseq_bug("cpu_id comparison failed"); error2: rseq_after_asm_goto(); rseq_bug("expected value comparison failed"); #endif } static inline __attribute__((always_inline)) int RSEQ_TEMPLATE_IDENTIFIER(rseq_cmpeqv_trymemcpy_storev)(intptr_t *v, intptr_t expect, void *dst, void *src, size_t len, intptr_t newv, int cpu) { RSEQ_INJECT_C(9) __asm__ __volatile__ goto ( RSEQ_ASM_DEFINE_TABLE(3, 1f, 2f, 4f) /* start, commit, abort */ RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[cmpfail]) #ifdef RSEQ_COMPARE_TWICE RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error1]) RSEQ_ASM_DEFINE_EXIT_POINT(1f, %l[error2]) #endif /* setup for mempcy */ "mr %%r19, %[len]\n\t" "mr %%r20, %[src]\n\t" "mr %%r21, %[dst]\n\t" /* Start rseq by storing table entry pointer into rseq_cs. */ RSEQ_ASM_STORE_RSEQ_CS(1, 3b, rseq_cs) /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, 4f) RSEQ_INJECT_ASM(3) /* cmp @v equal to @expect */ RSEQ_ASM_OP_CMPEQ(v, expect, %l[cmpfail]) RSEQ_INJECT_ASM(4) #ifdef RSEQ_COMPARE_TWICE /* cmp cpuid */ RSEQ_ASM_CMP_CPU_ID(cpu_id, current_cpu_id, %l[error1]) /* cmp @v equal to @expect */ RSEQ_ASM_OP_CMPEQ(v, expect, %l[error2]) #endif /* try memcpy */ RSEQ_ASM_OP_R_MEMCPY() RSEQ_INJECT_ASM(5) #ifdef RSEQ_TEMPLATE_MO_RELEASE /* for 'release' */ "lwsync\n\t" #endif /* final store */ RSEQ_ASM_OP_FINAL_STORE(newv, v, 2) RSEQ_INJECT_ASM(6) /* teardown */ RSEQ_ASM_DEFINE_ABORT(4, abort) : /* gcc asm goto does not allow outputs */ : [cpu_id] "r" (cpu), [current_cpu_id] "m" (rseq_get_abi()->RSEQ_TEMPLATE_CPU_ID_FIELD), [rseq_cs] "m" (rseq_get_abi()->rseq_cs.arch.ptr), /* final store input */ [v] "m" (*v), [expect] "r" (expect), [newv] "r" (newv), /* try memcpy input */ [dst] "r" (dst), [src] "r" (src), [len] "r" (len) RSEQ_INJECT_INPUT : "memory", "cc", "r17", "r18", "r19", "r20", "r21" RSEQ_INJECT_CLOBBER : abort, cmpfail #ifdef RSEQ_COMPARE_TWICE , error1, error2 #endif ); rseq_after_asm_goto(); return 0; abort: rseq_after_asm_goto(); RSEQ_INJECT_FAILED return -1; cmpfail: rseq_after_asm_goto(); return 1; #ifdef RSEQ_COMPARE_TWICE error1: rseq_after_asm_goto(); rseq_bug("cpu_id comparison failed"); error2: rseq_after_asm_goto(); rseq_bug("expected value comparison failed"); #endif } #endif /* #if (defined(RSEQ_TEMPLATE_MO_RELAXED) || defined(RSEQ_TEMPLATE_MO_RELEASE)) && (defined(RSEQ_TEMPLATE_CPU_ID) || defined(RSEQ_TEMPLATE_MM_CID)) */ #include "rseq-bits-reset.h" |