pthreads/pthread_machdep.h

   1 /*
   2  * Copyright (c) 2003-2004, 2008, 2011 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 #include <stdint.h>
  60
  61 /*
  62 ** Define macros for inline pthread_getspecific() usage.
  63 ** We reserve a number of slots for Apple internal use.
  64 ** This number can grow dynamically, no need to fix it.
  65 */
  66
  67 /* This header contains pre defined thread specific keys */
  68 /* 0 is used for pthread_self */
  69 #define _PTHREAD_TSD_SLOT_PTHREAD_SELF          0
  70 /* Keys 1- 9 for use by dyld, directly or indirectly */
  71 #define _PTHREAD_TSD_SLOT_DYLD_1                1
  72 #define _PTHREAD_TSD_SLOT_DYLD_2                2
  73 #define _PTHREAD_TSD_SLOT_DYLD_3                3
  74 #define _PTHREAD_TSD_RESERVED_SLOT_COUNT        4
  75 /* To mirror the usage by dyld for Unwind_SjLj */
  76 #define _PTHREAD_TSD_SLOT_DYLD_8                8
  77
  78 /* Keys 10 - 29 are for Libc/Libsystem internal ussage */
  79 /* used as __pthread_tsd_first + Num  */
  80 #define __PTK_LIBC_LOCALE_KEY           10
  81 #define __PTK_LIBC_TTYNAME_KEY          11
  82 #define __PTK_LIBC_LOCALTIME_KEY        12
  83 #define __PTK_LIBC_GMTIME_KEY           13
  84 #define __PTK_LIBC_GDTOA_BIGINT_KEY     14
  85 #define __PTK_LIBC_PARSEFLOAT_KEY       15
  86 /* for usage by dyld */
  87 #define __PTK_LIBC_DYLD_Unwind_SjLj_Key 18
  88
  89 /* Keys 20-25 for libdispactch usage */
  90 #define __PTK_LIBDISPATCH_KEY0          20
  91 #define __PTK_LIBDISPATCH_KEY1          21
  92 #define __PTK_LIBDISPATCH_KEY2          22
  93 #define __PTK_LIBDISPATCH_KEY3          23
  94 #define __PTK_LIBDISPATCH_KEY4          24
  95 #define __PTK_LIBDISPATCH_KEY5          25
  96
  97 /* Keys 30-255 for Non Libsystem usage */
  98
  99 /* Keys 30-39 for Graphic frameworks usage */
 100 #define _PTHREAD_TSD_SLOT_OPENGL        30      /* backwards compat sake */
 101 #define __PTK_FRAMEWORK_OPENGL_KEY      30
 102 #define __PTK_FRAMEWORK_GRAPHICS_KEY1   31
 103 #define __PTK_FRAMEWORK_GRAPHICS_KEY2   32
 104 #define __PTK_FRAMEWORK_GRAPHICS_KEY3   33
 105 #define __PTK_FRAMEWORK_GRAPHICS_KEY4   34
 106 #define __PTK_FRAMEWORK_GRAPHICS_KEY5   35
 107 #define __PTK_FRAMEWORK_GRAPHICS_KEY6   36
 108 #define __PTK_FRAMEWORK_GRAPHICS_KEY7   37
 109 #define __PTK_FRAMEWORK_GRAPHICS_KEY8   38
 110 #define __PTK_FRAMEWORK_GRAPHICS_KEY9   39
 111
 112 /* Keys 40-49 for Objective-C runtime usage */
 113 #define __PTK_FRAMEWORK_OBJC_KEY0       40
 114 #define __PTK_FRAMEWORK_OBJC_KEY1       41
 115 #define __PTK_FRAMEWORK_OBJC_KEY2       42
 116 #define __PTK_FRAMEWORK_OBJC_KEY3       43
 117 #define __PTK_FRAMEWORK_OBJC_KEY4       44
 118 #define __PTK_FRAMEWORK_OBJC_KEY5       45
 119 #define __PTK_FRAMEWORK_OBJC_KEY6       46
 120 #define __PTK_FRAMEWORK_OBJC_KEY7       47
 121 #define __PTK_FRAMEWORK_OBJC_KEY8       48
 122 #define __PTK_FRAMEWORK_OBJC_KEY9       49
 123
 124 /* Keys 50-59 for Core Foundation usage */
 125 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY0     50
 126 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY1     51
 127 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY2     52
 128 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY3     53
 129 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY4     54
 130 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY5     55
 131 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY6     56
 132 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY7     57
 133 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY8     58
 134 #define __PTK_FRAMEWORK_COREFOUNDATION_KEY9     59
 135
 136 /* Keys 60-69 for Foundation usage */
 137 #define __PTK_FRAMEWORK_FOUNDATION_KEY0         60
 138 #define __PTK_FRAMEWORK_FOUNDATION_KEY1         61
 139 #define __PTK_FRAMEWORK_FOUNDATION_KEY2         62
 140 #define __PTK_FRAMEWORK_FOUNDATION_KEY3         63
 141 #define __PTK_FRAMEWORK_FOUNDATION_KEY4         64
 142 #define __PTK_FRAMEWORK_FOUNDATION_KEY5         65
 143 #define __PTK_FRAMEWORK_FOUNDATION_KEY6         66
 144 #define __PTK_FRAMEWORK_FOUNDATION_KEY7         67
 145 #define __PTK_FRAMEWORK_FOUNDATION_KEY8         68
 146 #define __PTK_FRAMEWORK_FOUNDATION_KEY9         69
 147
 148 /* Keys 70-79 for Core Animation/QuartzCore usage */
 149 #define __PTK_FRAMEWORK_QUARTZCORE_KEY0         70
 150 #define __PTK_FRAMEWORK_QUARTZCORE_KEY1         71
 151 #define __PTK_FRAMEWORK_QUARTZCORE_KEY2         72
 152 #define __PTK_FRAMEWORK_QUARTZCORE_KEY3         73
 153 #define __PTK_FRAMEWORK_QUARTZCORE_KEY4         74
 154 #define __PTK_FRAMEWORK_QUARTZCORE_KEY5         75
 155 #define __PTK_FRAMEWORK_QUARTZCORE_KEY6         76
 156 #define __PTK_FRAMEWORK_QUARTZCORE_KEY7         77
 157 #define __PTK_FRAMEWORK_QUARTZCORE_KEY8         78
 158 #define __PTK_FRAMEWORK_QUARTZCORE_KEY9         79
 159
 160
 161 /* Keys 80-89 for Garbage Collection */
 162 #define __PTK_FRAMEWORK_OLDGC_KEY0              80
 163 #define __PTK_FRAMEWORK_OLDGC_KEY1              81
 164 #define __PTK_FRAMEWORK_OLDGC_KEY2              82
 165 #define __PTK_FRAMEWORK_OLDGC_KEY3              83
 166 #define __PTK_FRAMEWORK_OLDGC_KEY4              84
 167 #define __PTK_FRAMEWORK_OLDGC_KEY5              85
 168 #define __PTK_FRAMEWORK_OLDGC_KEY6              86
 169 #define __PTK_FRAMEWORK_OLDGC_KEY7              87
 170 #define __PTK_FRAMEWORK_OLDGC_KEY8              88
 171 #define __PTK_FRAMEWORK_OLDGC_KEY9              89
 172
 173 /* Keys 90-94 for JavaScriptCore Collection */
 174 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY0             90
 175 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY1             91
 176 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY2             92
 177 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY3             93
 178 #define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY4             94
 179 /* Keys 95 for CoreText */
 180 #define __PTK_FRAMEWORK_CORETEXT_KEY0                   95
 181
 182 /* Keys 110-119 for Garbage Collection */
 183 #define __PTK_FRAMEWORK_GC_KEY0         110
 184 #define __PTK_FRAMEWORK_GC_KEY1         111
 185 #define __PTK_FRAMEWORK_GC_KEY2         112
 186 #define __PTK_FRAMEWORK_GC_KEY3         113
 187 #define __PTK_FRAMEWORK_GC_KEY4         114
 188 #define __PTK_FRAMEWORK_GC_KEY5         115
 189 #define __PTK_FRAMEWORK_GC_KEY6         116
 190 #define __PTK_FRAMEWORK_GC_KEY7         117
 191 #define __PTK_FRAMEWORK_GC_KEY8         118
 192 #define __PTK_FRAMEWORK_GC_KEY9         119
 193
 194 /*
 195 ** Define macros for inline pthread_getspecific() usage.
 196 ** We reserve a number of slots for Apple internal use.
 197 ** This number can grow dynamically, no need to fix it.
 198 */
 199
 200
 201 #if defined(__cplusplus)
 202 extern "C" {
 203 #endif
 204
 205 extern void *pthread_getspecific(unsigned long);
 206 extern int pthread_setspecific(unsigned long, const void *);
 207 /* setup destructor function for static key as it is not created with pthread_key_create() */
 208 int       pthread_key_init_np(int, void (*)(void *));
 209
 210 #if defined(__cplusplus)
 211 }
 212 #endif
 213
 214 typedef int pthread_lock_t;
 215
 216 __inline__ static int
 217 _pthread_has_direct_tsd(void)
 218 {
 219 #if TARGET_IPHONE_SIMULATOR
 220         /* Simulator will use the host implementation, so bypass the macro that is in the target code */
 221         return 0;
 222 #elif defined(__ppc__)
 223         int *caps = (int *)_COMM_PAGE_CPU_CAPABILITIES;
 224         if (*caps & kFastThreadLocalStorage) {
 225                 return 1;
 226         } else {
 227                 return 0;
 228         }
 229 #else
 230         return 1;
 231 #endif
 232 }
 233
 234 #if TARGET_IPHONE_SIMULATOR || defined(__ppc__) || defined(__ppc64__) || \
 235         (defined(__arm__) && !defined(_ARM_ARCH_7) && defined(_ARM_ARCH_6) && defined(__thumb__))
 236
 237 #define _pthread_getspecific_direct(key) pthread_getspecific((key))
 238 #define _pthread_setspecific_direct(key, val) pthread_setspecific((key), (val))
 239
 240 #else
 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 #if defined(__i386__) || defined(__x86_64__)
 248         __asm__("mov %%gs:%1, %0" : "=r" (ret) : "m" (*(void **)(slot * sizeof(void *))));
 249 #elif (defined(__arm__) && (defined(_ARM_ARCH_6) || defined(_ARM_ARCH_5)))
 250         void **__pthread_tsd;
 251 #if defined(__arm__) && defined(_ARM_ARCH_6)
 252         uintptr_t __pthread_tpid;
 253         __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r" (__pthread_tpid));
 254         __pthread_tsd = (void**)(__pthread_tpid & ~0x3ul);
 255 #elif defined(__arm__) && defined(_ARM_ARCH_5)
 256         register uintptr_t __pthread_tpid asm ("r9");
 257         __pthread_tsd = (void**)__pthread_tpid;
 258 #endif
 259         ret = __pthread_tsd[slot];
 260 #else
 261 #error no _pthread_getspecific_direct implementation for this arch
 262 #endif
 263         return ret;
 264 }
 265
 266 /* To be used with static constant keys only */
 267 __inline__ static int
 268 _pthread_setspecific_direct(unsigned long slot, void * val)
 269 {
 270 #if defined(__i386__)
 271 #if defined(__PIC__)
 272         __asm__("movl %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "rn" (val));
 273 #else
 274         __asm__("movl %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "ri" (val));
 275 #endif
 276 #elif defined(__x86_64__)
 277         /* PIC is free and cannot be disabled, even with: gcc -mdynamic-no-pic ... */
 278         __asm__("movq %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "rn" (val));
 279 #elif (defined(__arm__) && (defined(_ARM_ARCH_6) || defined(_ARM_ARCH_5)))
 280         void **__pthread_tsd;
 281 #if defined(__arm__) && defined(_ARM_ARCH_6)
 282         uintptr_t __pthread_tpid;
 283         __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r" (__pthread_tpid));
 284         __pthread_tsd = (void**)(__pthread_tpid & ~0x3ul);
 285 #elif defined(__arm__) && defined(_ARM_ARCH_5)
 286         register uintptr_t __pthread_tpid asm ("r9");
 287         __pthread_tsd = (void**)__pthread_tpid;
 288 #endif
 289         __pthread_tsd[slot] = val;
 290 #else
 291 #error no _pthread_setspecific_direct implementation for this arch
 292 #endif
 293         return 0;
 294 }
 295
 296 #endif
 297
 298 #define LOCK_INIT(l)    ((l) = 0)
 299 #define LOCK_INITIALIZER 0
 300
 301 #endif /* ! __ASSEMBLER__ */
 302 #endif /* _POSIX_PTHREAD_MACHDEP_H */