study_objc4/objc4-750/include/System/pthread_machdep.h

/*
 * Copyright (c) 2003-2004, 2008, 2011 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
 *              All Rights Reserved
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appears in all copies and
 * that both the copyright notice and this permission notice appear in
 * supporting documentation.
 *
 * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE.
 *
 * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
 * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
 * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
/*
 * MkLinux
 */

/* Machine-dependent definitions for pthread internals. */

#ifndef _POSIX_PTHREAD_MACHDEP_H
#define _POSIX_PTHREAD_MACHDEP_H

#ifndef __ASSEMBLER__

#include <System/machine/cpu_capabilities.h>
#ifdef __arm__
#include <arm/arch.h>
#endif
#include <TargetConditionals.h>
#include <stdint.h>

/*
 ** Define macros for inline pthread_getspecific() usage.
 ** We reserve a number of slots for Apple internal use.
 ** This number can grow dynamically, no need to fix it.
 */

/* This header contains pre defined thread specific keys */
/* 0 is used for pthread_self */
#define _PTHREAD_TSD_SLOT_PTHREAD_SELF        0
/* Keys 1- 9 for use by dyld, directly or indirectly */
#define _PTHREAD_TSD_SLOT_DYLD_1        1
#define _PTHREAD_TSD_SLOT_DYLD_2        2
#define _PTHREAD_TSD_SLOT_DYLD_3        3
#define _PTHREAD_TSD_RESERVED_SLOT_COUNT    4
/* To mirror the usage by dyld for Unwind_SjLj */
#define _PTHREAD_TSD_SLOT_DYLD_8        8

/* Keys 10 - 29 are for Libc/Libsystem internal ussage */
/* used as __pthread_tsd_first + Num  */
#define __PTK_LIBC_LOCALE_KEY        10
#define __PTK_LIBC_TTYNAME_KEY        11
#define __PTK_LIBC_LOCALTIME_KEY    12
#define __PTK_LIBC_GMTIME_KEY        13
#define __PTK_LIBC_GDTOA_BIGINT_KEY    14
#define __PTK_LIBC_PARSEFLOAT_KEY    15
/* for usage by dyld */
#define __PTK_LIBC_DYLD_Unwind_SjLj_Key    18

/* Keys 20-25 for libdispactch usage */
#define __PTK_LIBDISPATCH_KEY0        20
#define __PTK_LIBDISPATCH_KEY1        21
#define __PTK_LIBDISPATCH_KEY2        22
#define __PTK_LIBDISPATCH_KEY3        23
#define __PTK_LIBDISPATCH_KEY4        24
#define __PTK_LIBDISPATCH_KEY5        25

/* Keys 30-255 for Non Libsystem usage */

/* Keys 30-39 for Graphic frameworks usage */
#define _PTHREAD_TSD_SLOT_OPENGL    30    /* backwards compat sake */
#define __PTK_FRAMEWORK_OPENGL_KEY    30
#define __PTK_FRAMEWORK_GRAPHICS_KEY1    31
#define __PTK_FRAMEWORK_GRAPHICS_KEY2    32
#define __PTK_FRAMEWORK_GRAPHICS_KEY3    33
#define __PTK_FRAMEWORK_GRAPHICS_KEY4    34
#define __PTK_FRAMEWORK_GRAPHICS_KEY5    35
#define __PTK_FRAMEWORK_GRAPHICS_KEY6    36
#define __PTK_FRAMEWORK_GRAPHICS_KEY7    37
#define __PTK_FRAMEWORK_GRAPHICS_KEY8    38
#define __PTK_FRAMEWORK_GRAPHICS_KEY9    39

/* Keys 40-49 for Objective-C runtime usage */
#define __PTK_FRAMEWORK_OBJC_KEY0    40
#define __PTK_FRAMEWORK_OBJC_KEY1    41
#define __PTK_FRAMEWORK_OBJC_KEY2    42
#define __PTK_FRAMEWORK_OBJC_KEY3    43
#define __PTK_FRAMEWORK_OBJC_KEY4    44
#define __PTK_FRAMEWORK_OBJC_KEY5    45
#define __PTK_FRAMEWORK_OBJC_KEY6    46
#define __PTK_FRAMEWORK_OBJC_KEY7    47
#define __PTK_FRAMEWORK_OBJC_KEY8    48
#define __PTK_FRAMEWORK_OBJC_KEY9    49

/* Keys 50-59 for Core Foundation usage */
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY0    50
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY1    51
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY2    52
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY3    53
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY4    54
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY5    55
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY6    56
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY7    57
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY8    58
#define __PTK_FRAMEWORK_COREFOUNDATION_KEY9    59

/* Keys 60-69 for Foundation usage */
#define __PTK_FRAMEWORK_FOUNDATION_KEY0        60
#define __PTK_FRAMEWORK_FOUNDATION_KEY1        61
#define __PTK_FRAMEWORK_FOUNDATION_KEY2        62
#define __PTK_FRAMEWORK_FOUNDATION_KEY3        63
#define __PTK_FRAMEWORK_FOUNDATION_KEY4        64
#define __PTK_FRAMEWORK_FOUNDATION_KEY5        65
#define __PTK_FRAMEWORK_FOUNDATION_KEY6        66
#define __PTK_FRAMEWORK_FOUNDATION_KEY7        67
#define __PTK_FRAMEWORK_FOUNDATION_KEY8        68
#define __PTK_FRAMEWORK_FOUNDATION_KEY9        69

/* Keys 70-79 for Core Animation/QuartzCore usage */
#define __PTK_FRAMEWORK_QUARTZCORE_KEY0        70
#define __PTK_FRAMEWORK_QUARTZCORE_KEY1        71
#define __PTK_FRAMEWORK_QUARTZCORE_KEY2        72
#define __PTK_FRAMEWORK_QUARTZCORE_KEY3        73
#define __PTK_FRAMEWORK_QUARTZCORE_KEY4        74
#define __PTK_FRAMEWORK_QUARTZCORE_KEY5        75
#define __PTK_FRAMEWORK_QUARTZCORE_KEY6        76
#define __PTK_FRAMEWORK_QUARTZCORE_KEY7        77
#define __PTK_FRAMEWORK_QUARTZCORE_KEY8        78
#define __PTK_FRAMEWORK_QUARTZCORE_KEY9        79


/* Keys 80-89 for Garbage Collection */
#define __PTK_FRAMEWORK_OLDGC_KEY0        80
#define __PTK_FRAMEWORK_OLDGC_KEY1        81
#define __PTK_FRAMEWORK_OLDGC_KEY2        82
#define __PTK_FRAMEWORK_OLDGC_KEY3        83
#define __PTK_FRAMEWORK_OLDGC_KEY4        84
#define __PTK_FRAMEWORK_OLDGC_KEY5        85
#define __PTK_FRAMEWORK_OLDGC_KEY6        86
#define __PTK_FRAMEWORK_OLDGC_KEY7        87
#define __PTK_FRAMEWORK_OLDGC_KEY8        88
#define __PTK_FRAMEWORK_OLDGC_KEY9        89

/* Keys 90-94 for JavaScriptCore Collection */
#define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY0        90
#define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY1        91
#define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY2        92
#define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY3        93
#define __PTK_FRAMEWORK_JAVASCRIPTCORE_KEY4        94
/* Keys 95 for CoreText */
#define __PTK_FRAMEWORK_CORETEXT_KEY0            95

/* Keys 110-119 for Garbage Collection */
#define __PTK_FRAMEWORK_GC_KEY0        110
#define __PTK_FRAMEWORK_GC_KEY1        111
#define __PTK_FRAMEWORK_GC_KEY2        112
#define __PTK_FRAMEWORK_GC_KEY3        113
#define __PTK_FRAMEWORK_GC_KEY4        114
#define __PTK_FRAMEWORK_GC_KEY5        115
#define __PTK_FRAMEWORK_GC_KEY6        116
#define __PTK_FRAMEWORK_GC_KEY7        117
#define __PTK_FRAMEWORK_GC_KEY8        118
#define __PTK_FRAMEWORK_GC_KEY9        119

/*
 ** Define macros for inline pthread_getspecific() usage.
 ** We reserve a number of slots for Apple internal use.
 ** This number can grow dynamically, no need to fix it.
 */


#if defined(__cplusplus)
extern "C" {
#endif
    
    extern void *pthread_getspecific(unsigned long);
    extern int pthread_setspecific(unsigned long, const void *);
    /* setup destructor function for static key as it is not created with pthread_key_create() */
    int       pthread_key_init_np(int, void (*)(void *));
    
#if defined(__cplusplus)
}
#endif

//typedef int pthread_lock_t;

//__inline__ static int
//_pthread_has_direct_tsd(void)
//{
//#if TARGET_IPHONE_SIMULATOR
//    /* Simulator will use the host implementation, so bypass the macro that is in the target code */
//    return 0;
//#elif defined(__ppc__)
//    int *caps = (int *)_COMM_PAGE_CPU_CAPABILITIES;
//    if (*caps & kFastThreadLocalStorage) {
//        return 1;
//    } else {
//        return 0;
//    }
//#else
//    return 1;
//#endif
//}

#if TARGET_IPHONE_SIMULATOR || defined(__ppc__) || defined(__ppc64__) || \
(defined(__arm__) && !defined(_ARM_ARCH_7) && defined(_ARM_ARCH_6) && defined(__thumb__))

#define _pthread_getspecific_direct(key) pthread_getspecific((key))
#define _pthread_setspecific_direct(key, val) pthread_setspecific((key), (val))

#else

/* To be used with static constant keys only */
//__inline__ static void *
//_pthread_getspecific_direct(unsigned long slot)
//{
//    void *ret;
//#if defined(__i386__) || defined(__x86_64__)
//    __asm__("mov %%gs:%1, %0" : "=r" (ret) : "m" (*(void **)(slot * sizeof(void *))));
//#elif (defined(__arm__) && (defined(_ARM_ARCH_6) || defined(_ARM_ARCH_5)))
//    void **__pthread_tsd;
//#if defined(__arm__) && defined(_ARM_ARCH_6)
//    uintptr_t __pthread_tpid;
//    __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r" (__pthread_tpid));
//    __pthread_tsd = (void**)(__pthread_tpid & ~0x3ul);
//#elif defined(__arm__) && defined(_ARM_ARCH_5)
//    register uintptr_t __pthread_tpid asm ("r9");
//    __pthread_tsd = (void**)__pthread_tpid;
//#endif
//    ret = __pthread_tsd[slot];
//#else
//#error no _pthread_getspecific_direct implementation for this arch
//#endif
//    return ret;
//}

/* To be used with static constant keys only */
//__inline__ static int
//_pthread_setspecific_direct(unsigned long slot, void * val)
//{
//#if defined(__i386__)
//#if defined(__PIC__)
//    __asm__("movl %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "rn" (val));
//#else
//    __asm__("movl %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "ri" (val));
//#endif
//#elif defined(__x86_64__)
//    /* PIC is free and cannot be disabled, even with: gcc -mdynamic-no-pic ... */
//    __asm__("movq %1,%%gs:%0" : "=m" (*(void **)(slot * sizeof(void *))) : "rn" (val));
//#elif (defined(__arm__) && (defined(_ARM_ARCH_6) || defined(_ARM_ARCH_5)))
//    void **__pthread_tsd;
//#if defined(__arm__) && defined(_ARM_ARCH_6)
//    uintptr_t __pthread_tpid;
//    __asm__("mrc p15, 0, %0, c13, c0, 3" : "=r" (__pthread_tpid));
//    __pthread_tsd = (void**)(__pthread_tpid & ~0x3ul);
//#elif defined(__arm__) && defined(_ARM_ARCH_5)
//    register uintptr_t __pthread_tpid asm ("r9");
//    __pthread_tsd = (void**)__pthread_tpid;
//#endif
//    __pthread_tsd[slot] = val;
//#else
//#error no _pthread_setspecific_direct implementation for this arch
//#endif
//    return 0;
//}

#endif

#define LOCK_INIT(l)    ((l) = 0)
#define LOCK_INITIALIZER 0

#endif /* ! __ASSEMBLER__ */
#endif /* _POSIX_PTHREAD_MACHDEP_H */