_linux.h (23503B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 /* 7 * This file is used by not only Linux but also other glibc systems 8 * such as GNU/Hurd and GNU/k*BSD. 9 */ 10 11 #ifndef nspr_linux_defs_h___ 12 #define nspr_linux_defs_h___ 13 14 #include "prthread.h" 15 16 /* 17 * Internal configuration macros 18 */ 19 20 #define PR_LINKER_ARCH "linux" 21 #define _PR_SI_SYSNAME "LINUX" 22 #ifdef __powerpc64__ 23 #define _PR_SI_ARCHITECTURE "ppc64" 24 #elif defined(__powerpc__) 25 #define _PR_SI_ARCHITECTURE "ppc" 26 #elif defined(__alpha) 27 #define _PR_SI_ARCHITECTURE "alpha" 28 #elif defined(__ia64__) 29 #define _PR_SI_ARCHITECTURE "ia64" 30 #elif defined(__x86_64__) 31 #define _PR_SI_ARCHITECTURE "x86-64" 32 #elif defined(__mc68000__) 33 #define _PR_SI_ARCHITECTURE "m68k" 34 #elif defined(__sparc__) && defined(__arch64__) 35 #define _PR_SI_ARCHITECTURE "sparc64" 36 #elif defined(__sparc__) 37 #define _PR_SI_ARCHITECTURE "sparc" 38 #elif defined(__i386__) 39 #define _PR_SI_ARCHITECTURE "x86" 40 #elif defined(__mips__) 41 #define _PR_SI_ARCHITECTURE "mips" 42 #elif defined(__arm__) 43 #define _PR_SI_ARCHITECTURE "arm" 44 #elif defined(__aarch64__) 45 #define _PR_SI_ARCHITECTURE "aarch64" 46 #elif defined(__hppa__) 47 #define _PR_SI_ARCHITECTURE "hppa" 48 #elif defined(__s390x__) 49 #define _PR_SI_ARCHITECTURE "s390x" 50 #elif defined(__s390__) 51 #define _PR_SI_ARCHITECTURE "s390" 52 #elif defined(__sh__) 53 #define _PR_SI_ARCHITECTURE "sh" 54 #elif defined(__avr32__) 55 #define _PR_SI_ARCHITECTURE "avr32" 56 #elif defined(__m32r__) 57 #define _PR_SI_ARCHITECTURE "m32r" 58 #elif defined(__or1k__) 59 #define _PR_SI_ARCHITECTURE "or1k" 60 #elif defined(__riscv) && (__riscv_xlen == 32) 61 #define _PR_SI_ARCHITECTURE "riscv32" 62 #elif defined(__riscv) && (__riscv_xlen == 64) 63 #define _PR_SI_ARCHITECTURE "riscv64" 64 #elif defined(__e2k__) 65 #define _PR_SI_ARCHITECTURE "e2k" 66 #elif defined(__arc__) 67 #define _PR_SI_ARCHITECTURE "arc" 68 #elif defined(__nios2__) 69 #define _PR_SI_ARCHITECTURE "nios2" 70 #elif defined(__microblaze__) 71 #define _PR_SI_ARCHITECTURE "microblaze" 72 #elif defined(__nds32__) 73 #define _PR_SI_ARCHITECTURE "nds32" 74 #elif defined(__xtensa__) 75 #define _PR_SI_ARCHITECTURE "xtensa" 76 #elif defined(__loongarch64) 77 #define _PR_SI_ARCHITECTURE "loongarch64" 78 #else 79 #error "Unknown CPU architecture" 80 #endif 81 #define PR_DLL_SUFFIX ".so" 82 83 #define _PR_VMBASE 0x30000000 84 #define _PR_STACK_VMBASE 0x50000000 85 #define _MD_DEFAULT_STACK_SIZE 65536L 86 #define _MD_MMAP_FLAGS MAP_PRIVATE 87 88 #if defined(__aarch64__) || defined(__mips__) 89 #define _MD_MINIMUM_STACK_SIZE 0x20000 90 #endif 91 92 #undef HAVE_STACK_GROWING_UP 93 94 /* 95 * Elf linux supports dl* functions 96 */ 97 #define HAVE_DLL 98 #define USE_DLFCN 99 #if defined(ANDROID) 100 #define NO_DLOPEN_NULL 101 #endif 102 103 #if defined(__FreeBSD_kernel__) || defined(__GNU__) 104 #define _PR_HAVE_SOCKADDR_LEN 105 #endif 106 107 #if defined(__i386__) 108 #define _PR_HAVE_ATOMIC_OPS 109 #define _MD_INIT_ATOMIC() 110 extern PRInt32 _PR_x86_AtomicIncrement(PRInt32 *val); 111 #define _MD_ATOMIC_INCREMENT _PR_x86_AtomicIncrement 112 extern PRInt32 _PR_x86_AtomicDecrement(PRInt32 *val); 113 #define _MD_ATOMIC_DECREMENT _PR_x86_AtomicDecrement 114 extern PRInt32 _PR_x86_AtomicAdd(PRInt32 *ptr, PRInt32 val); 115 #define _MD_ATOMIC_ADD _PR_x86_AtomicAdd 116 extern PRInt32 _PR_x86_AtomicSet(PRInt32 *val, PRInt32 newval); 117 #define _MD_ATOMIC_SET _PR_x86_AtomicSet 118 #endif 119 120 #if defined(__ia64__) 121 #define _PR_HAVE_ATOMIC_OPS 122 #define _MD_INIT_ATOMIC() 123 extern PRInt32 _PR_ia64_AtomicIncrement(PRInt32 *val); 124 #define _MD_ATOMIC_INCREMENT _PR_ia64_AtomicIncrement 125 extern PRInt32 _PR_ia64_AtomicDecrement(PRInt32 *val); 126 #define _MD_ATOMIC_DECREMENT _PR_ia64_AtomicDecrement 127 extern PRInt32 _PR_ia64_AtomicAdd(PRInt32 *ptr, PRInt32 val); 128 #define _MD_ATOMIC_ADD _PR_ia64_AtomicAdd 129 extern PRInt32 _PR_ia64_AtomicSet(PRInt32 *val, PRInt32 newval); 130 #define _MD_ATOMIC_SET _PR_ia64_AtomicSet 131 #endif 132 133 #if defined(__x86_64__) 134 #define _PR_HAVE_ATOMIC_OPS 135 #define _MD_INIT_ATOMIC() 136 extern PRInt32 _PR_x86_64_AtomicIncrement(PRInt32 *val); 137 #define _MD_ATOMIC_INCREMENT _PR_x86_64_AtomicIncrement 138 extern PRInt32 _PR_x86_64_AtomicDecrement(PRInt32 *val); 139 #define _MD_ATOMIC_DECREMENT _PR_x86_64_AtomicDecrement 140 extern PRInt32 _PR_x86_64_AtomicAdd(PRInt32 *ptr, PRInt32 val); 141 #define _MD_ATOMIC_ADD _PR_x86_64_AtomicAdd 142 extern PRInt32 _PR_x86_64_AtomicSet(PRInt32 *val, PRInt32 newval); 143 #define _MD_ATOMIC_SET _PR_x86_64_AtomicSet 144 #endif 145 146 #if defined(__loongarch__) 147 #if defined(__GNUC__) 148 /* Use GCC built-in functions */ 149 #define _PR_HAVE_ATOMIC_OPS 150 #define _MD_INIT_ATOMIC() 151 #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) 152 #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) 153 #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) 154 #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) 155 #endif 156 #endif 157 158 #if defined(__or1k__) 159 #if defined(__GNUC__) 160 /* Use GCC built-in functions */ 161 #define _PR_HAVE_ATOMIC_OPS 162 #define _MD_INIT_ATOMIC() 163 #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) 164 #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) 165 #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) 166 #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) 167 #endif 168 #endif 169 170 #if defined(__powerpc__) && !defined(__powerpc64__) 171 #define _PR_HAVE_ATOMIC_OPS 172 #define _MD_INIT_ATOMIC() 173 extern PRInt32 _PR_ppc_AtomicIncrement(PRInt32 *val); 174 #define _MD_ATOMIC_INCREMENT _PR_ppc_AtomicIncrement 175 extern PRInt32 _PR_ppc_AtomicDecrement(PRInt32 *val); 176 #define _MD_ATOMIC_DECREMENT _PR_ppc_AtomicDecrement 177 extern PRInt32 _PR_ppc_AtomicAdd(PRInt32 *ptr, PRInt32 val); 178 #define _MD_ATOMIC_ADD _PR_ppc_AtomicAdd 179 extern PRInt32 _PR_ppc_AtomicSet(PRInt32 *val, PRInt32 newval); 180 #define _MD_ATOMIC_SET _PR_ppc_AtomicSet 181 #endif 182 183 #if defined(__powerpc64__) 184 #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) 185 /* Use GCC built-in functions */ 186 #define _PR_HAVE_ATOMIC_OPS 187 #define _MD_INIT_ATOMIC() 188 #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) 189 #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) 190 #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) 191 #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) 192 #endif 193 #endif 194 195 #if defined(__mips__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) 196 /* Use GCC built-in functions */ 197 #define _PR_HAVE_ATOMIC_OPS 198 #define _MD_INIT_ATOMIC() 199 #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) 200 #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) 201 #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) 202 #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) 203 #endif 204 205 #if defined(__riscv) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) 206 /* Use GCC built-in functions */ 207 #define _PR_HAVE_ATOMIC_OPS 208 #define _MD_INIT_ATOMIC() 209 #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) 210 #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) 211 #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) 212 #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) 213 #endif 214 215 #if defined(__alpha) 216 #define _PR_HAVE_ATOMIC_OPS 217 #define _MD_INIT_ATOMIC() 218 #define _MD_ATOMIC_ADD(ptr, i) ({ \ 219 PRInt32 __atomic_tmp, __atomic_ret; \ 220 __asm__ __volatile__( \ 221 "1: ldl_l %[ret], %[val] \n" \ 222 " addl %[ret], %[inc], %[tmp] \n" \ 223 " addl %[ret], %[inc], %[ret] \n" \ 224 " stl_c %[tmp], %[val] \n" \ 225 " beq %[tmp], 2f \n" \ 226 ".subsection 2 \n" \ 227 "2: br 1b \n" \ 228 ".previous" \ 229 : [ret] "=&r" (__atomic_ret), \ 230 [tmp] "=&r" (__atomic_tmp), \ 231 [val] "=m" (*ptr) \ 232 : [inc] "Ir" (i), "m" (*ptr)); \ 233 __atomic_ret; \ 234 }) 235 #define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1) 236 #define _MD_ATOMIC_DECREMENT(ptr) ({ \ 237 PRInt32 __atomic_tmp, __atomic_ret; \ 238 __asm__ __volatile__( \ 239 "1: ldl_l %[ret], %[val] \n" \ 240 " subl %[ret], 1, %[tmp] \n" \ 241 " subl %[ret], 1, %[ret] \n" \ 242 " stl_c %[tmp], %[val] \n" \ 243 " beq %[tmp], 2f \n" \ 244 ".subsection 2 \n" \ 245 "2: br 1b \n" \ 246 ".previous" \ 247 : [ret] "=&r" (__atomic_ret), \ 248 [tmp] "=&r" (__atomic_tmp), \ 249 [val] "=m" (*ptr) \ 250 : "m" (*ptr)); \ 251 __atomic_ret; \ 252 }) 253 #define _MD_ATOMIC_SET(ptr, n) ({ \ 254 PRInt32 __atomic_tmp, __atomic_ret; \ 255 __asm__ __volatile__( \ 256 "1: ldl_l %[ret], %[val] \n" \ 257 " mov %[newval], %[tmp] \n" \ 258 " stl_c %[tmp], %[val] \n" \ 259 " beq %[tmp], 2f \n" \ 260 ".subsection 2 \n" \ 261 "2: br 1b \n" \ 262 ".previous" \ 263 : [ret] "=&r" (__atomic_ret), \ 264 [tmp] "=&r"(__atomic_tmp), \ 265 [val] "=m" (*ptr) \ 266 : [newval] "Ir" (n), "m" (*ptr)); \ 267 __atomic_ret; \ 268 }) 269 #endif 270 271 #if defined(__arm__) || defined(__aarch64__) 272 #if defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) 273 /* Use GCC built-in functions */ 274 #define _PR_HAVE_ATOMIC_OPS 275 #define _MD_INIT_ATOMIC() 276 277 #define _MD_ATOMIC_INCREMENT(ptr) __sync_add_and_fetch(ptr, 1) 278 #define _MD_ATOMIC_DECREMENT(ptr) __sync_sub_and_fetch(ptr, 1) 279 #define _MD_ATOMIC_SET(ptr, nv) __sync_lock_test_and_set(ptr, nv) 280 #define _MD_ATOMIC_ADD(ptr, i) __sync_add_and_fetch(ptr, i) 281 282 #elif defined(_PR_ARM_KUSER) 283 #define _PR_HAVE_ATOMIC_OPS 284 #define _MD_INIT_ATOMIC() 285 286 /* 287 * The kernel provides this helper function at a fixed address with a fixed 288 * ABI signature, directly callable from user space. 289 * 290 * Definition: 291 * Atomically store newval in *ptr if *ptr is equal to oldval. 292 * Return zero if *ptr was changed or non-zero if no exchange happened. 293 */ 294 typedef int (__kernel_cmpxchg_t)(int oldval, int newval, volatile int *ptr); 295 #define __kernel_cmpxchg (*(__kernel_cmpxchg_t *)0xffff0fc0) 296 297 #define _MD_ATOMIC_INCREMENT(ptr) _MD_ATOMIC_ADD(ptr, 1) 298 #define _MD_ATOMIC_DECREMENT(ptr) _MD_ATOMIC_ADD(ptr, -1) 299 300 static inline PRInt32 _MD_ATOMIC_ADD(PRInt32 *ptr, PRInt32 n) 301 { 302 PRInt32 ov, nv; 303 volatile PRInt32 *vp = ptr; 304 305 do { 306 ov = *vp; 307 nv = ov + n; 308 } while (__kernel_cmpxchg(ov, nv, vp)); 309 310 return nv; 311 } 312 313 static inline PRInt32 _MD_ATOMIC_SET(PRInt32 *ptr, PRInt32 nv) 314 { 315 PRInt32 ov; 316 volatile PRInt32 *vp = ptr; 317 318 do { 319 ov = *vp; 320 } while (__kernel_cmpxchg(ov, nv, vp)); 321 322 return ov; 323 } 324 #endif 325 #endif /* __arm__ */ 326 327 #define USE_SETJMP 328 #if (defined(__GLIBC__) && __GLIBC__ >= 2) || defined(ANDROID) 329 #define _PR_POLL_AVAILABLE 330 #endif 331 #undef _PR_USE_POLL 332 #define _PR_STAT_HAS_ONLY_ST_ATIME 333 #if defined(__alpha) || defined(__ia64__) 334 #define _PR_HAVE_LARGE_OFF_T 335 #elif (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \ 336 || defined(ANDROID) 337 #define _PR_HAVE_OFF64_T 338 #else 339 #define _PR_NO_LARGE_FILES 340 #endif 341 #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) \ 342 || defined(ANDROID) 343 #define _PR_INET6 344 #define _PR_HAVE_INET_NTOP 345 #define _PR_HAVE_GETHOSTBYNAME2 346 #define _PR_HAVE_GETADDRINFO 347 #define _PR_INET6_PROBE 348 #endif 349 #ifndef ANDROID 350 #define _PR_HAVE_SYSV_SEMAPHORES 351 #define PR_HAVE_SYSV_NAMED_SHARED_MEMORY 352 #endif 353 /* Android has gethostbyname_r but not gethostbyaddr_r or gethostbyname2_r. */ 354 #if (__GLIBC__ >= 2) && defined(_PR_PTHREADS) 355 #define _PR_HAVE_GETHOST_R 356 #define _PR_HAVE_GETHOST_R_INT 357 #endif 358 359 #ifdef _PR_PTHREADS 360 361 extern void _MD_CleanupBeforeExit(void); 362 #define _MD_CLEANUP_BEFORE_EXIT _MD_CleanupBeforeExit 363 364 #else /* ! _PR_PTHREADS */ 365 366 #include <setjmp.h> 367 368 #define PR_CONTEXT_TYPE sigjmp_buf 369 370 #define CONTEXT(_th) ((_th)->md.context) 371 372 #ifdef __powerpc__ 373 /* 374 * PowerPC based MkLinux 375 * 376 * On the PowerPC, the new style jmp_buf isn't used until glibc 377 * 2.1. 378 */ 379 #if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) 380 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_GPR1] 381 #else 382 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__misc[0] 383 #endif /* glibc 2.1 or later */ 384 #define _MD_SET_FP(_t, val) 385 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 386 #define _MD_GET_FP_PTR(_t) ((void *) 0) 387 /* aix = 64, macos = 70 */ 388 #define PR_NUM_GCREGS 64 389 390 #elif defined(__alpha) 391 /* Alpha based Linux */ 392 393 #if defined(__GLIBC__) && __GLIBC__ >= 2 394 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] 395 #define _MD_SET_FP(_t, val) 396 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 397 #define _MD_GET_FP_PTR(_t) ((void *) 0) 398 #define _MD_SP_TYPE long int 399 #else 400 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 401 #define _MD_SET_FP(_t, val) 402 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 403 #define _MD_GET_FP_PTR(_t) ((void *) 0) 404 #define _MD_SP_TYPE __ptr_t 405 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 406 407 /* XXX not sure if this is correct, or maybe it should be 17? */ 408 #define PR_NUM_GCREGS 9 409 410 #elif defined(__ia64__) 411 412 #define _MD_GET_SP(_t) ((long *)((_t)->md.context[0].__jmpbuf)[0]) 413 #define _MD_SET_FP(_t, val) 414 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 415 #define _MD_GET_FP_PTR(_t) ((void *) 0) 416 #define _MD_SP_TYPE long int 417 418 #define PR_NUM_GCREGS _JBLEN 419 420 #elif defined(__mc68000__) 421 /* m68k based Linux */ 422 423 /* 424 * On the m68k, glibc still uses the old style sigjmp_buf, even 425 * in glibc 2.0.7. 426 */ 427 #if defined(__GLIBC__) && __GLIBC__ >= 2 428 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 429 #define _MD_SET_FP(_t, val) 430 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 431 #define _MD_GET_FP_PTR(_t) ((void *) 0) 432 #define _MD_SP_TYPE int 433 #else 434 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 435 #define _MD_SET_FP(_t, val) 436 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 437 #define _MD_GET_FP_PTR(_t) ((void *) 0) 438 #define _MD_SP_TYPE __ptr_t 439 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 440 441 /* XXX not sure if this is correct, or maybe it should be 17? */ 442 #define PR_NUM_GCREGS 9 443 444 #elif defined(__sparc__) 445 /* Sparc */ 446 #if defined(__GLIBC__) && __GLIBC__ >= 2 447 /* 448 * You need glibc2-2.0.7-25 or later. The libraries that came with 449 * Red Hat 5.1 are not new enough, but they are in 5.2. 450 */ 451 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] 452 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_FP] = val) 453 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 454 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_FP]) 455 #define _MD_SP_TYPE int 456 #else 457 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__fp 458 #define _MD_SET_FP(_t, val) 459 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 460 #define _MD_GET_FP_PTR(_t) ((void *) 0) 461 #define _MD_SP_TYPE __ptr_t 462 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 463 464 #elif defined(__i386__) 465 /* Intel based Linux */ 466 #if defined(__GLIBC__) && __GLIBC__ >= 2 467 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[JB_SP] 468 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[JB_BP] = val) 469 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 470 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[JB_BP]) 471 #define _MD_SP_TYPE int 472 #else 473 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 474 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__bp = val) 475 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 476 #define _MD_GET_FP_PTR(_t) &((_t)->md.context[0].__jmpbuf[0].__bp) 477 #define _MD_SP_TYPE __ptr_t 478 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 479 #define PR_NUM_GCREGS 6 480 481 #elif defined(__mips__) 482 /* Linux/MIPS */ 483 #if defined(__GLIBC__) && __GLIBC__ >= 2 484 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__sp 485 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__fp = (val)) 486 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 487 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__fp) 488 #define _MD_SP_TYPE __ptr_t 489 #else 490 #error "Linux/MIPS pre-glibc2 not supported yet" 491 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 492 493 #elif defined(__arm__) 494 /* ARM/Linux */ 495 #if defined(__GLIBC__) && __GLIBC__ >= 2 496 #ifdef __ARM_EABI__ 497 /* EABI */ 498 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[8] 499 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[7] = (val)) 500 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 501 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[7]) 502 #define _MD_SP_TYPE __ptr_t 503 #else /* __ARM_EABI__ */ 504 /* old ABI */ 505 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[20] 506 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[19] = (val)) 507 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 508 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[19]) 509 #define _MD_SP_TYPE __ptr_t 510 #endif /* __ARM_EABI__ */ 511 #else 512 #error "ARM/Linux pre-glibc2 not supported yet" 513 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 514 515 #elif defined(__sh__) 516 /* SH/Linux */ 517 #if defined(__GLIBC__) && __GLIBC__ >= 2 518 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[7] 519 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[6] = (val)) 520 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 521 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[6]) 522 #define _MD_SP_TYPE __ptr_t 523 #else 524 #error "SH/Linux pre-glibc2 not supported yet" 525 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 526 527 #elif defined(__m32r__) 528 /* Linux/M32R */ 529 #if defined(__GLIBC__) && __GLIBC__ >= 2 530 #define _MD_GET_SP(_t) (_t)->md.context[0].__jmpbuf[0].__regs[JB_SP] 531 #define _MD_SET_FP(_t, val) ((_t)->md.context[0].__jmpbuf[0].__regs[JB_FP] = (val)) 532 #define _MD_GET_SP_PTR(_t) &(_MD_GET_SP(_t)) 533 #define _MD_GET_FP_PTR(_t) (&(_t)->md.context[0].__jmpbuf[0].__regs[JB_FP]) 534 #define _MD_SP_TYPE __ptr_t 535 #else 536 #error "Linux/M32R pre-glibc2 not supported yet" 537 #endif /* defined(__GLIBC__) && __GLIBC__ >= 2 */ 538 539 #else 540 541 #error "Unknown CPU architecture" 542 543 #endif /*__powerpc__*/ 544 545 /* 546 ** Initialize a thread context to run "_main()" when started 547 */ 548 #ifdef __powerpc__ 549 550 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 551 { \ 552 *status = PR_TRUE; \ 553 if (sigsetjmp(CONTEXT(_thread), 1)) { \ 554 _main(); \ 555 } \ 556 _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 128); \ 557 _thread->md.sp = _MD_GET_SP_PTR(_thread); \ 558 _thread->md.fp = _MD_GET_FP_PTR(_thread); \ 559 _MD_SET_FP(_thread, 0); \ 560 } 561 562 #elif defined(__mips__) 563 564 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 565 { \ 566 *status = PR_TRUE; \ 567 (void) sigsetjmp(CONTEXT(_thread), 1); \ 568 _thread->md.context[0].__jmpbuf[0].__pc = (__ptr_t) _main; \ 569 _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \ 570 _thread->md.sp = _MD_GET_SP_PTR(_thread); \ 571 _thread->md.fp = _MD_GET_FP_PTR(_thread); \ 572 _MD_SET_FP(_thread, 0); \ 573 } 574 575 #else 576 577 #define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \ 578 { \ 579 *status = PR_TRUE; \ 580 if (sigsetjmp(CONTEXT(_thread), 1)) { \ 581 _main(); \ 582 } \ 583 _MD_GET_SP(_thread) = (_MD_SP_TYPE) ((_sp) - 64); \ 584 _thread->md.sp = _MD_GET_SP_PTR(_thread); \ 585 _thread->md.fp = _MD_GET_FP_PTR(_thread); \ 586 _MD_SET_FP(_thread, 0); \ 587 } 588 589 #endif /*__powerpc__*/ 590 591 #define _MD_SWITCH_CONTEXT(_thread) \ 592 if (!sigsetjmp(CONTEXT(_thread), 1)) { \ 593 (_thread)->md.errcode = errno; \ 594 _PR_Schedule(); \ 595 } 596 597 /* 598 ** Restore a thread context, saved by _MD_SWITCH_CONTEXT 599 */ 600 #define _MD_RESTORE_CONTEXT(_thread) \ 601 { \ 602 errno = (_thread)->md.errcode; \ 603 _MD_SET_CURRENT_THREAD(_thread); \ 604 siglongjmp(CONTEXT(_thread), 1); \ 605 } 606 607 /* Machine-dependent (MD) data structures */ 608 609 struct _MDThread { 610 PR_CONTEXT_TYPE context; 611 void *sp; 612 void *fp; 613 int id; 614 int errcode; 615 }; 616 617 struct _MDThreadStack { 618 PRInt8 notused; 619 }; 620 621 struct _MDLock { 622 PRInt8 notused; 623 }; 624 625 struct _MDSemaphore { 626 PRInt8 notused; 627 }; 628 629 struct _MDCVar { 630 PRInt8 notused; 631 }; 632 633 struct _MDSegment { 634 PRInt8 notused; 635 }; 636 637 /* 638 * md-specific cpu structure field 639 */ 640 #include <sys/time.h> /* for FD_SETSIZE */ 641 #define _PR_MD_MAX_OSFD FD_SETSIZE 642 643 struct _MDCPU_Unix { 644 PRCList ioQ; 645 PRUint32 ioq_timeout; 646 PRInt32 ioq_max_osfd; 647 PRInt32 ioq_osfd_cnt; 648 #ifndef _PR_USE_POLL 649 fd_set fd_read_set, fd_write_set, fd_exception_set; 650 PRInt16 fd_read_cnt[_PR_MD_MAX_OSFD],fd_write_cnt[_PR_MD_MAX_OSFD], 651 fd_exception_cnt[_PR_MD_MAX_OSFD]; 652 #else 653 struct pollfd *ioq_pollfds; 654 int ioq_pollfds_size; 655 #endif /* _PR_USE_POLL */ 656 }; 657 658 #define _PR_IOQ(_cpu) ((_cpu)->md.md_unix.ioQ) 659 #define _PR_ADD_TO_IOQ(_pq, _cpu) PR_APPEND_LINK(&_pq.links, &_PR_IOQ(_cpu)) 660 #define _PR_FD_READ_SET(_cpu) ((_cpu)->md.md_unix.fd_read_set) 661 #define _PR_FD_READ_CNT(_cpu) ((_cpu)->md.md_unix.fd_read_cnt) 662 #define _PR_FD_WRITE_SET(_cpu) ((_cpu)->md.md_unix.fd_write_set) 663 #define _PR_FD_WRITE_CNT(_cpu) ((_cpu)->md.md_unix.fd_write_cnt) 664 #define _PR_FD_EXCEPTION_SET(_cpu) ((_cpu)->md.md_unix.fd_exception_set) 665 #define _PR_FD_EXCEPTION_CNT(_cpu) ((_cpu)->md.md_unix.fd_exception_cnt) 666 #define _PR_IOQ_TIMEOUT(_cpu) ((_cpu)->md.md_unix.ioq_timeout) 667 #define _PR_IOQ_MAX_OSFD(_cpu) ((_cpu)->md.md_unix.ioq_max_osfd) 668 #define _PR_IOQ_OSFD_CNT(_cpu) ((_cpu)->md.md_unix.ioq_osfd_cnt) 669 #define _PR_IOQ_POLLFDS(_cpu) ((_cpu)->md.md_unix.ioq_pollfds) 670 #define _PR_IOQ_POLLFDS_SIZE(_cpu) ((_cpu)->md.md_unix.ioq_pollfds_size) 671 672 #define _PR_IOQ_MIN_POLLFDS_SIZE(_cpu) 32 673 674 struct _MDCPU { 675 struct _MDCPU_Unix md_unix; 676 }; 677 678 #define _MD_INIT_LOCKS() 679 #define _MD_NEW_LOCK(lock) PR_SUCCESS 680 #define _MD_FREE_LOCK(lock) 681 #define _MD_LOCK(lock) 682 #define _MD_UNLOCK(lock) 683 #define _MD_INIT_IO() 684 #define _MD_IOQ_LOCK() 685 #define _MD_IOQ_UNLOCK() 686 687 extern PRStatus _MD_InitializeThread(PRThread *thread); 688 689 #define _MD_INIT_RUNNING_CPU(cpu) _MD_unix_init_running_cpu(cpu) 690 #define _MD_INIT_THREAD _MD_InitializeThread 691 #define _MD_EXIT_THREAD(thread) 692 #define _MD_SUSPEND_THREAD(thread) _MD_suspend_thread 693 #define _MD_RESUME_THREAD(thread) _MD_resume_thread 694 #define _MD_CLEAN_THREAD(_thread) 695 696 extern PRStatus _MD_CREATE_THREAD( 697 PRThread *thread, 698 void (*start) (void *), 699 PRThreadPriority priority, 700 PRThreadScope scope, 701 PRThreadState state, 702 PRUint32 stackSize); 703 extern void _MD_SET_PRIORITY(struct _MDThread *thread, PRUintn newPri); 704 extern PRStatus _MD_WAIT(PRThread *, PRIntervalTime timeout); 705 extern PRStatus _MD_WAKEUP_WAITER(PRThread *); 706 extern void _MD_YIELD(void); 707 708 #endif /* ! _PR_PTHREADS */ 709 710 extern void _MD_EarlyInit(void); 711 712 #define _MD_EARLY_INIT _MD_EarlyInit 713 #define _MD_FINAL_INIT _PR_UnixInit 714 #define _PR_HAVE_CLOCK_MONOTONIC 715 716 /* 717 * We wrapped the select() call. _MD_SELECT refers to the built-in, 718 * unwrapped version. 719 */ 720 #define _MD_SELECT __select 721 722 #ifdef _PR_POLL_AVAILABLE 723 #include <sys/poll.h> 724 extern int __syscall_poll(struct pollfd *ufds, unsigned long int nfds, 725 int timeout); 726 #define _MD_POLL __syscall_poll 727 #endif 728 729 /* For writev() */ 730 #include <sys/uio.h> 731 732 extern void _MD_linux_map_sendfile_error(int err); 733 734 #endif /* nspr_linux_defs_h___ */