include/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 #ifdef __LP64__
  53 #define _PTHREAD_TSD_OFFSET 0x60
  54 #else
  55 #define _PTHREAD_TSD_OFFSET 0x48
  56 #endif  /* __LP64__ */
  57
  58 #ifndef __ASSEMBLER__
  59
  60 #include <System/machine/cpu_capabilities.h>
  61 #ifdef __arm__
  62 #include <arm/arch.h>
  63 #endif
  64
  65 /*
  66 ** Define macros for inline pthread_getspecific() usage.
  67 ** We reserve a number of slots for Apple internal use.
  68 ** This number can grow dynamically, no need to fix it.
  69 */
  70
  71 /* This header contains pre defined thread specific keys */
  72 /* 0 is used for pthread_self */
  73 #define _PTHREAD_TSD_SLOT_PTHREAD_SELF          0
  74 /* Keys 1- 9 for use by dyld, directly or indirectly */
  75 #define _PTHREAD_TSD_SLOT_DYLD_1                1
  76 #define _PTHREAD_TSD_SLOT_DYLD_2                2
  77 #define _PTHREAD_TSD_SLOT_DYLD_3                3
  78 #define _PTHREAD_TSD_RESERVED_SLOT_COUNT        4
  79
  80 /* Keys 10 - 29 are for Libc/Libsystem internal ussage */
  81 /* used as __pthread_tsd_first + Num  */
  82 #define __PTK_LIBC_LOCALE_KEY           10
  83 #define __PTK_LIBC_TTYNAME_KEY          11
  84 #define __PTK_LIBC_LOCALTIME_KEY        12
  85 #define __PTK_LIBC_GMTIME_KEY           13
  86 #define __PTK_LIBC_GDTOA_BIGINT_KEY     14
  87 #define __PTK_LIBC_PARSEFLOAT_KEY       15
  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_GC_KEY0         80
 163 #define __PTK_FRAMEWORK_GC_KEY1         81
 164 #define __PTK_FRAMEWORK_GC_KEY2         82
 165 #define __PTK_FRAMEWORK_GC_KEY3         83
 166 #define __PTK_FRAMEWORK_GC_KEY4         84
 167 #define __PTK_FRAMEWORK_GC_KEY5         85
 168 #define __PTK_FRAMEWORK_GC_KEY6         86
 169 #define __PTK_FRAMEWORK_GC_KEY7         87
 170 #define __PTK_FRAMEWORK_GC_KEY8         88
 171 #define __PTK_FRAMEWORK_GC_KEY9         89
 172
 173
 174 /*
 175 ** Define macros for inline pthread_getspecific() usage.
 176 ** We reserve a number of slots for Apple internal use.
 177 ** This number can grow dynamically, no need to fix it.
 178 */
 179
 180
 181 #if defined(__cplusplus)
 182 extern "C" {
 183 #endif
 184
 185 extern void *pthread_getspecific(unsigned long);
 186 /* setup destructor function for static key as it is not created with pthread_key_create() */
 187 int       pthread_key_init_np(int, void (*)(void *));
 188
 189 #if defined(__cplusplus)
 190 }
 191 #endif
 192
 193 typedef int pthread_lock_t;
 194
 195 inline static int
 196 _pthread_has_direct_tsd(void)
 197 {
 198 #if defined(__ppc__)
 199         int *caps = (int *)_COMM_PAGE_CPU_CAPABILITIES;
 200         if (*caps & kFastThreadLocalStorage) {
 201                 return 1;
 202         } else {
 203                 return 0;
 204         }
 205 #elif defined(__arm__) && defined(__thumb__) && defined(_ARM_ARCH_6) && !defined(_ARM_ARCH_7)
 206         return 0;
 207 #else
 208         return 1;
 209 #endif
 210 }
 211
 212 /* To be used with static constant keys only */
 213 inline static void *
 214 _pthread_getspecific_direct(unsigned long slot)
 215 {
 216         void *ret;
 217 #if defined(__i386__) || defined(__x86_64__)
 218 #if defined(__OPTIMIZE__)
 219         asm volatile("mov %%gs:%P1, %0" : "=r" (ret) : "i" (slot * sizeof(void *) + _PTHREAD_TSD_OFFSET));
 220 #else
 221         asm("mov %%gs:%P2(,%1,%P3), %0" : "=r" (ret) : "r" (slot), "i" (_PTHREAD_TSD_OFFSET), "i" (sizeof (void *)));
 222 #endif
 223 #elif defined(__ppc__)
 224         void **__pthread_tsd;
 225         asm volatile("mfspr %0, 259" : "=r" (__pthread_tsd));
 226         ret = __pthread_tsd[slot + (_PTHREAD_TSD_OFFSET / sizeof(void *))];
 227 #elif defined(__ppc64__)
 228         register void **__pthread_tsd asm ("r13");
 229         ret = __pthread_tsd[slot + (_PTHREAD_TSD_OFFSET / sizeof(void *))];
 230 #elif defined(__arm__) && defined(_ARM_ARCH_6)
 231         void **__pthread_tsd;
 232         __asm__ ("mrc p15, 0, %0, c13, c0, 3" : "=r"(__pthread_tsd));
 233         ret = __pthread_tsd[slot + (_PTHREAD_TSD_OFFSET / sizeof(void *))];
 234 #elif defined(__arm__) && !defined(_ARM_ARCH_6)
 235         register void **__pthread_tsd asm ("r9");
 236         ret = __pthread_tsd[slot + (_PTHREAD_TSD_OFFSET / sizeof(void *))];
 237 #else
 238 #error no pthread_getspecific_direct implementation for this arch
 239 #endif
 240         return ret;
 241 }
 242
 243 /* To be used with static constant keys only */
 244 #define _pthread_setspecific_direct(key, val) pthread_setspecific(key, val)
 245
 246 #define LOCK_INIT(l)    ((l) = 0)
 247 #define LOCK_INITIALIZER 0
 248
 249 #endif /* ! __ASSEMBLER__ */
 250 #endif /* _POSIX_PTHREAD_MACHDEP_H */