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