pthreads/pthread_machdep.h

   1 /*
   2  * Copyright (c) 2003-2004, 2008 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
  25  *              All Rights Reserved
  26  *
  27  * Permission to use, copy, modify, and distribute this software and
  28  * its documentation for any purpose and without fee is hereby granted,
  29  * provided that the above copyright notice appears in all copies and
  30  * that both the copyright notice and this permission notice appear in
  31  * supporting documentation.
  32  *
  33  * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
  34  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  35  * FOR A PARTICULAR PURPOSE.
  36  *
  37  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
  38  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  39  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
  40  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
  41  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  42  */
  43 /*
  44  * MkLinux
  45  */
  46
  47 /* Machine-dependent definitions for pthread internals. */
  48
  49 #ifndef _POSIX_PTHREAD_MACHDEP_H
  50 #define _POSIX_PTHREAD_MACHDEP_H
  51
  52 #ifndef __ASSEMBLER__
  53
  54 #include <System/machine/cpu_capabilities.h>
  55 #ifdef __arm__
  56 #include <arm/arch.h>
  57 #endif
  58 #include <TargetConditionals.h>
  59
  60 /*
  61 ** Define macros for inline pthread_getspecific() usage.
  62 ** We reserve a number of slots for Apple internal use.
  63 ** This number can grow dynamically, no need to fix it.
  64 */
  65
  66 /* This header contains pre defined thread specific keys */
  67 /* 0 is used for pthread_self */
  68 #define _PTHREAD_TSD_SLOT_PTHREAD_SELF          0
  69 /* Keys 1- 9 for use by dyld, directly or indirectly */
  70 #define _PTHREAD_TSD_SLOT_DYLD_1                1
  71 #define _PTHREAD_TSD_SLOT_DYLD_2                2
  72 #define _PTHREAD_TSD_SLOT_DYLD_3                3
  73 #define _PTHREAD_TSD_RESERVED_SLOT_COUNT        4
  74 /* To mirror the usage by dyld for Unwind_SjLj */
  75 #define _PTHREAD_TSD_SLOT_DYLD_8                8
  76
  77 /* Keys 10 - 29 are for Libc/Libsystem internal ussage */
  78 /* used as __pthread_tsd_first + Num  */
  79 #define __PTK_LIBC_LOCALE_KEY           10
  80 #define __PTK_LIBC_TTYNAME_KEY          11
  81 #define __PTK_LIBC_LOCALTIME_KEY        12
  82 #define __PTK_LIBC_GMTIME_KEY           13
  83 #define __PTK_LIBC_GDTOA_BIGINT_KEY     14
  84 #define __PTK_LIBC_PARSEFLOAT_KEY       15
  85 /* for usage by dyld */
  86 #define __PTK_LIBC_DYLD_Unwind_SjLj_Key 18
  87
  88 /* Keys 20-25 for libdispactch usage */
  89 #define __PTK_LIBDISPATCH_KEY0          20
  90 #define __PTK_LIBDISPATCH_KEY1          21
  91 #define __PTK_LIBDISPATCH_KEY2          22
  92 #define __PTK_LIBDISPATCH_KEY3          23
  93 #define __PTK_LIBDISPATCH_KEY4          24
  94 #define __PTK_LIBDISPATCH_KEY5          25
  95
  96 /* Keys 30-255 for Non Libsystem usage */
  97
  98 /* Keys 30-39 for Graphic frameworks usage */
  99 #define _PTHREAD_TSD_SLOT_OPENGL        30      /* backwards compat sake */
 100 #define __PTK_FRAMEWORK_OPENGL_KEY      30
 101 #define __PTK_FRAMEWORK_GRAPHICS_KEY1   31
 102 #define __PTK_FRAMEWORK_GRAPHICS_KEY2   32
 103 #define __PTK_FRAMEWORK_GRAPHICS_KEY3   33
 104 #define __PTK_FRAMEWORK_GRAPHICS_KEY4   34
 105 #define __PTK_FRAMEWORK_GRAPHICS_KEY5   35
 106 #define __PTK_FRAMEWORK_GRAPHICS_KEY6   36
 107 #define __PTK_FRAMEWORK_GRAPHICS_KEY7   37
 108 #define __PTK_FRAMEWORK_GRAPHICS_KEY8   38
 109 #define __PTK_FRAMEWORK_GRAPHICS_KEY9   39
 110
 111 /* Keys 40-49 for Objective-C runtime usage */
 112 #define __PTK_FRAMEWORK_OBJC_KEY0       40
 113 #define __PTK_FRAMEWORK_OBJC_KEY1       41
 114 #define __PTK_FRAMEWORK_OBJC_KEY2       42
 115 #define __PTK_FRAMEWORK_OBJC_KEY3       43
 116 #define __PTK_FRAMEWORK_OBJC_KEY4       44
 117 #define __PTK_FRAMEWORK_OBJC_KEY5       45
 118 #define __PTK_FRAMEWORK_OBJC_KEY6       46
 119 #define __PTK_FRAMEWORK_OBJC_KEY7       47
 120 #define __PTK_FRAMEWORK_OBJC_KEY8       48
 121 #define __PTK_FRAMEWORK_OBJC_KEY9       49
 122
 123 /* Keys 50-59 for Core Foundation usage */
 124 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY0     50
 125 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY1     51
 126 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY2     52
 127 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY3     53
 128 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY4     54
 129 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY5     55
 130 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY6     56
 131 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY7     57
 132 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY8     58
 133 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY9     59
 134
 135 /* Keys 60-69 for Foundation usage */
 136 #define __PTK_FRAMEWORK_FOUNDATION_KEY0         60
 137 #define __PTK_FRAMEWORK_FOUNDATION_KEY1         61
 138 #define __PTK_FRAMEWORK_FOUNDATION_KEY2         62
 139 #define __PTK_FRAMEWORK_FOUNDATION_KEY3         63
 140 #define __PTK_FRAMEWORK_FOUNDATION_KEY4         64
 141 #define __PTK_FRAMEWORK_FOUNDATION_KEY5         65
 142 #define __PTK_FRAMEWORK_FOUNDATION_KEY6         66
 143 #define __PTK_FRAMEWORK_FOUNDATION_KEY7         67
 144 #define __PTK_FRAMEWORK_FOUNDATION_KEY8         68
 145 #define __PTK_FRAMEWORK_FOUNDATION_KEY9         69
 146
 147 /* Keys 70-79 for Core Animation/QuartzCore usage */
 148 #define __PTK_FRAMEWORK_QUARTZCORE_KEY0         70
 149 #define __PTK_FRAMEWORK_QUARTZCORE_KEY1         71
 150 #define __PTK_FRAMEWORK_QUARTZCORE_KEY2         72
 151 #define __PTK_FRAMEWORK_QUARTZCORE_KEY3         73
 152 #define __PTK_FRAMEWORK_QUARTZCORE_KEY4         74
 153 #define __PTK_FRAMEWORK_QUARTZCORE_KEY5         75
 154 #define __PTK_FRAMEWORK_QUARTZCORE_KEY6         76
 155 #define __PTK_FRAMEWORK_QUARTZCORE_KEY7         77
 156 #define __PTK_FRAMEWORK_QUARTZCORE_KEY8         78
 157 #define __PTK_FRAMEWORK_QUARTZCORE_KEY9         79
 158
 159
 160 /* Keys 80-89 for Garbage Collection */
 161 #define __PTK_FRAMEWORK_OLDGC_KEY0              80
 162 #define __PTK_FRAMEWORK_OLDGC_KEY1              81
 163 #define __PTK_FRAMEWORK_OLDGC_KEY2              82
 164 #define __PTK_FRAMEWORK_OLDGC_KEY3              83
 165 #define __PTK_FRAMEWORK_OLDGC_KEY4              84
 166 #define __PTK_FRAMEWORK_OLDGC_KEY5              85
 167 #define __PTK_FRAMEWORK_OLDGC_KEY6              86
 168 #define __PTK_FRAMEWORK_OLDGC_KEY7              87
 169 #define __PTK_FRAMEWORK_OLDGC_KEY8              88
 170 #define __PTK_FRAMEWORK_OLDGC_KEY9              89
 171
 172 /* Keys 90-94 for JavaScriptCore Collection */
 173 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY0             90
 174 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY1             91
 175 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY2             92
 176 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY3             93
 177 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY4             94
 178
 179 /* Keys 110-119 for Garbage Collection */
 180 #define __PTK_FRAMEWORK_GC_KEY0         110
 181 #define __PTK_FRAMEWORK_GC_KEY1         111
 182 #define __PTK_FRAMEWORK_GC_KEY2         112
 183 #define __PTK_FRAMEWORK_GC_KEY3         113
 184 #define __PTK_FRAMEWORK_GC_KEY4         114
 185 #define __PTK_FRAMEWORK_GC_KEY5         115
 186 #define __PTK_FRAMEWORK_GC_KEY6         116
 187 #define __PTK_FRAMEWORK_GC_KEY7         117
 188 #define __PTK_FRAMEWORK_GC_KEY8         118
 189 #define __PTK_FRAMEWORK_GC_KEY9         119
 190
 191 /*
 192 ** Define macros for inline pthread_getspecific() usage.
 193 ** We reserve a number of slots for Apple internal use.
 194 ** This number can grow dynamically, no need to fix it.
 195 */
 196
 197
 198 #if defined(__cplusplus)
 199 extern "C" {
 200 #endif
 201
 202 extern void *pthread_getspecific(unsigned long);
 203 /* setup destructor function for static key as it is not created with pthread_key_create() */
 204 int       pthread_key_init_np(int, void (*)(void *));
 205
 206 #if defined(__cplusplus)
 207 }
 208 #endif
 209
 210 typedef int pthread_lock_t;
 211
 212 #if TARGET_IPHONE_SIMULATOR
 213
 214 /* Similator will use the host implementation, so bypass the macro that is in the target code */
 215
 216 inline static int
 217 _pthread_has_direct_tsd(void)
 218 {
 219         return 0;
 220 }
 221
 222 #define _pthread_getspecific_direct(key) pthread_getspecific(key)
 223 #define _pthread_setspecific_direct(key, val) pthread_setspecific(key, val)
 224
 225 #else /* TARGET_IPHONE_SIMULATOR */
 226
 227 inline static int
 228 _pthread_has_direct_tsd(void)
 229 {
 230 #if defined(__ppc__)
 231         int *caps = (int *)_COMM_PAGE_CPU_CAPABILITIES;
 232         if (*caps & kFastThreadLocalStorage) {
 233                 return 1;
 234         } else {
 235                 return 0;
 236         }
 237 #else
 238         return 1;
 239 #endif
 240 }
 241
 242 /* To be used with static constant keys only */
 243 inline static void *
 244 _pthread_getspecific_direct(unsigned long slot)
 245 {
 246         void *ret;
 247
 248 #if defined(__i386__) || defined(__x86_64__)
 249         asm("mov %%gs:%1, %0" : "=r" (ret) : "m" (*(void **)(slot * sizeof(void *))));
 250 #elif defined(__ppc64__) || defined(__ppc__)
 251         ret = pthread_getspecific(slot);
 252 #elif defined(__arm__) && defined(_ARM_ARCH_6) && !defined(_ARM_ARCH_7) && defined(__thumb__) && !defined(__OPTIMIZE__)
 253         ret = pthread_getspecific(slot);
 254 #elif defined(__arm__) && defined(_ARM_ARCH_6)
 255         void **__pthread_tsd;
 256         __asm__ (
 257                 "mrc p15, 0, %0, c13, c0, 3\n"
 258                 "bic %0, %0, #3\n"
 259                 : "=r"(__pthread_tsd));
 260         ret = __pthread_tsd[slot];
 261 #elif defined(__arm__) && !defined(_ARM_ARCH_6)
 262         register void **__pthread_tsd asm ("r9");
 263         ret = __pthread_tsd[slot];
 264 #else
 265 #error no pthread_getspecific_direct implementation for this arch
 266 #endif
 267         return ret;
 268 }
 269
 270 #if  defined(__i386__) || defined(__x86_64__) || defined(__arm__)
 271 /* To be used with static constant keys only */
 272 inline static int
 273 _pthread_setspecific_direct(unsigned long slot, void * val)
 274 {
 275
 276 #if defined(__i386__)
 277 #if defined(__PIC__)
 278         asm("movl %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "rn" (val));
 279 #else
 280         asm("movl %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "ri" (val));
 281 #endif
 282 #elif defined(__x86_64__)
 283         /* PIC is free and cannot be disabled, even with: gcc -mdynamic-no-pic ... */
 284         asm("movq %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "rn" (val));
 285 #elif defined(__arm__) && defined(_ARM_ARCH_6)
 286         void **__pthread_tsd;
 287         __asm__ (
 288                 "mrc p15, 0, %0, c13, c0, 3\n"
 289                 "bic %0, %0, #3\n"
 290                 : "=r"(__pthread_tsd));
 291         __pthread_tsd[slot] = val;
 292 #elif defined(__arm__) && !defined(_ARM_ARCH_6)
 293         register void **__pthread_tsd asm ("r9");
 294         __pthread_tsd[slot] = val;
 295 #endif
 296         return(0);
 297 }
 298 #elif defined(__ppc__)  || defined(__ppc64__)
 299 /* To be used with static constant keys only */
 300 #define _pthread_setspecific_direct(key, val) pthread_setspecific(key, val)
 301 #else
 302 #error no pthread_setspecific_direct implementation for this arch
 303 #endif
 304
 305 #endif /* TARGET_IPHONE_SIMULATOR */
 306
 307 #define LOCK_INIT(l)    ((l) = 0)
 308 #define LOCK_INITIALIZER 0
 309
 310 #endif /* ! __ASSEMBLER__ */
 311 #endif /* _POSIX_PTHREAD_MACHDEP_H */