[thirdparty/glibc.git] / sysdeps / powerpc / nptl / tls.h

/* Definition for thread-local data handling.  NPTL/PowerPC version.
   Copyright (C) 2003-2021 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef _TLS_H
#define _TLS_H	1

# include <dl-sysdep.h>

#ifndef __ASSEMBLER__
# include <stdbool.h>
# include <stddef.h>
# include <stdint.h>
# include <dl-dtv.h>

#else /* __ASSEMBLER__ */
# include <tcb-offsets.h>
# define __ASSEMBLY__
# include <asm/ptrace.h>
#endif /* __ASSEMBLER__ */

#ifndef __powerpc64__
/* Register r2 (tp) is reserved by the ABI as "thread pointer". */
# define PT_THREAD_POINTER PT_R2
# ifndef __ASSEMBLER__
register void *__thread_register __asm__ ("r2");
# endif

#else /* __powerpc64__ */
/* Register r13 (tp) is reserved by the ABI as "thread pointer". */
# define PT_THREAD_POINTER PT_R13
# ifndef __ASSEMBLER__
register void *__thread_register __asm__ ("r13");
# endif
#endif /* __powerpc64__ */

#ifndef __ASSEMBLER__

# include <hwcapinfo.h>

/* Get system call information.  */
# include <sysdep.h>

/* The TP points to the start of the thread blocks.  */
# define TLS_DTV_AT_TP	1
# define TLS_TCB_AT_TP	0

/* We use the multiple_threads field in the pthread struct */
#define TLS_MULTIPLE_THREADS_IN_TCB	1

/* Get the thread descriptor definition.  */
# include <nptl/descr.h>


/* The stack_guard is accessed directly by GCC -fstack-protector code,
   so it is a part of public ABI.  The dtv and pointer_guard fields
   are private.  */
typedef struct
{
  /* Reservation for HWCAP data.  To be accessed by GCC in
     __builtin_cpu_supports(), so it is a part of public ABI.  */
  uint64_t hwcap;
  /* Reservation for AT_PLATFORM data.  To be accessed by GCC in
     __builtin_cpu_is(), so it is a part of public ABI.  Since there
     are different ABIs for 32 and 64 bit, we put this field in a
     previously empty padding space for powerpc64.  */
#ifndef __powerpc64__
  /* Padding to maintain alignment.  */
  uint32_t padding;
  uint32_t at_platform;
#endif
  uint32_t __unused;
  /* Reservation for AT_PLATFORM data - powerpc64.  */
#ifdef __powerpc64__
  uint32_t at_platform;
#endif
  /* Reservation for Dynamic System Optimizer ABI.  */
  uintptr_t dso_slot2;
  uintptr_t dso_slot1;
  /* Reservation for tar register (ISA 2.07).  */
  uintptr_t tar_save;
  /* GCC split stack support.  */
  void *__private_ss;
  /* Reservation for the Event-Based Branching ABI.  */
  uintptr_t ebb_handler;
  uintptr_t ebb_ctx_pointer;
  uintptr_t ebb_reserved1;
  uintptr_t ebb_reserved2;
  uintptr_t pointer_guard;
  uintptr_t stack_guard;
  dtv_t *dtv;
} tcbhead_t;

/* This is the size of the initial TCB.  */
# define TLS_INIT_TCB_SIZE	0

/* Alignment requirements for the initial TCB.  */
# define TLS_INIT_TCB_ALIGN	__alignof__ (struct pthread)

/* This is the size of the TCB.  */
# define TLS_TCB_SIZE		0

/* Alignment requirements for the TCB.  */
# define TLS_TCB_ALIGN		__alignof__ (struct pthread)

/* This is the size we need before TCB.  */
# define TLS_PRE_TCB_SIZE \
  (sizeof (struct pthread)						      \
   + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1)))

/* The following assumes that TP (R2 or R13) points to the end of the
   TCB + 0x7000 (per the ABI).  This implies that TCB address is
   TP - 0x7000.  As we define TLS_DTV_AT_TP we can
   assume that the pthread struct is allocated immediately ahead of the
   TCB.  This implies that the pthread_descr address is
   TP - (TLS_PRE_TCB_SIZE + 0x7000).  */
# define TLS_TCB_OFFSET	0x7000

/* Install the dtv pointer.  The pointer passed is to the element with
   index -1 which contain the length.  */
# define INSTALL_DTV(tcbp, dtvp) \
  ((tcbhead_t *) (tcbp))[-1].dtv = dtvp + 1

/* Install new dtv for current thread.  */
# define INSTALL_NEW_DTV(dtv) (THREAD_DTV() = (dtv))

/* Return dtv of given thread descriptor.  */
# define GET_DTV(tcbp)	(((tcbhead_t *) (tcbp))[-1].dtv)

/* Code to initially initialize the thread pointer.  This might need
   special attention since 'errno' is not yet available and if the
   operation can cause a failure 'errno' must not be touched.  */
# define TLS_INIT_TP(tcbp) \
  ({ 									      \
    __thread_register = (void *) (tcbp) + TLS_TCB_OFFSET;		      \
    THREAD_SET_HWCAP (__tcb_hwcap);					      \
    THREAD_SET_AT_PLATFORM (__tcb_platform);				      \
    NULL;								      \
  })

/* Value passed to 'clone' for initialization of the thread register.  */
# define TLS_DEFINE_INIT_TP(tp, pd) \
    void *tp = (void *) (pd) + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE;	      \
    (((tcbhead_t *) ((char *) tp - TLS_TCB_OFFSET))[-1].hwcap) =	      \
      THREAD_GET_HWCAP ();						      \
    (((tcbhead_t *) ((char *) tp - TLS_TCB_OFFSET))[-1].at_platform) =	      \
      THREAD_GET_AT_PLATFORM ();

/* Return the address of the dtv for the current thread.  */
# define THREAD_DTV() \
    (((tcbhead_t *) (__thread_register - TLS_TCB_OFFSET))[-1].dtv)

/* Return the thread descriptor for the current thread.  */
# define THREAD_SELF \
    ((struct pthread *) (__thread_register \
			 - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))

/* Magic for libthread_db to know how to do THREAD_SELF.  */
# define DB_THREAD_SELF							      \
  REGISTER (32, 32, PT_THREAD_POINTER * 4,				      \
	    - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)			      \
  REGISTER (64, 64, PT_THREAD_POINTER * 8,				      \
	    - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)

/* Read member of the thread descriptor directly.  */
# define THREAD_GETMEM(descr, member) ((void)(descr), (THREAD_SELF)->member)

/* Same as THREAD_GETMEM, but the member offset can be non-constant.  */
# define THREAD_GETMEM_NC(descr, member, idx) \
    ((void)(descr), (THREAD_SELF)->member[idx])

/* Set member of the thread descriptor directly.  */
# define THREAD_SETMEM(descr, member, value) \
    ((void)(descr), (THREAD_SELF)->member = (value))

/* Same as THREAD_SETMEM, but the member offset can be non-constant.  */
# define THREAD_SETMEM_NC(descr, member, idx, value) \
    ((void)(descr), (THREAD_SELF)->member[idx] = (value))

/* Set the stack guard field in TCB head.  */
# define THREAD_SET_STACK_GUARD(value) \
    (((tcbhead_t *) ((char *) __thread_register				      \
		     - TLS_TCB_OFFSET))[-1].stack_guard = (value))
# define THREAD_COPY_STACK_GUARD(descr) \
    (((tcbhead_t *) ((char *) (descr)					      \
		     + TLS_PRE_TCB_SIZE))[-1].stack_guard		      \
     = ((tcbhead_t *) ((char *) __thread_register			      \
		       - TLS_TCB_OFFSET))[-1].stack_guard)

/* Set the stack guard field in TCB head.  */
# define THREAD_GET_POINTER_GUARD() \
    (((tcbhead_t *) ((char *) __thread_register				      \
		     - TLS_TCB_OFFSET))[-1].pointer_guard)
# define THREAD_SET_POINTER_GUARD(value) \
    (THREAD_GET_POINTER_GUARD () = (value))
# define THREAD_COPY_POINTER_GUARD(descr) \
    (((tcbhead_t *) ((char *) (descr)					      \
		     + TLS_PRE_TCB_SIZE))[-1].pointer_guard		      \
     = THREAD_GET_POINTER_GUARD())

/* hwcap field in TCB head.  */
# define THREAD_GET_HWCAP() \
    (((tcbhead_t *) ((char *) __thread_register				      \
		     - TLS_TCB_OFFSET))[-1].hwcap)
# define THREAD_SET_HWCAP(value) \
    (THREAD_GET_HWCAP () = (value))

/* at_platform field in TCB head.  */
# define THREAD_GET_AT_PLATFORM() \
    (((tcbhead_t *) ((char *) __thread_register				      \
		     - TLS_TCB_OFFSET))[-1].at_platform)
# define THREAD_SET_AT_PLATFORM(value) \
    (THREAD_GET_AT_PLATFORM () = (value))

/* l_tls_offset == 0 is perfectly valid on PPC, so we have to use some
   different value to mean unset l_tls_offset.  */
# define NO_TLS_OFFSET		-1

/* Get and set the global scope generation counter in struct pthread.  */
#define THREAD_GSCOPE_IN_TCB      1
#define THREAD_GSCOPE_FLAG_UNUSED 0
#define THREAD_GSCOPE_FLAG_USED   1
#define THREAD_GSCOPE_FLAG_WAIT   2
#define THREAD_GSCOPE_RESET_FLAG() \
  do									     \
    { int __res								     \
	= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag,	     \
			       THREAD_GSCOPE_FLAG_UNUSED);		     \
      if (__res == THREAD_GSCOPE_FLAG_WAIT)				     \
	lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE);   \
    }									     \
  while (0)
#define THREAD_GSCOPE_SET_FLAG() \
  do									     \
    {									     \
      THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED;	     \
      atomic_write_barrier ();						     \
    }									     \
  while (0)

#endif /* __ASSEMBLER__ */

#endif	/* tls.h */
Commit	Line	Data
f3c13160	1	/* Definition for thread-local data handling. NPTL/PowerPC version.
2b778ceb	2	Copyright (C) 2003-2021 Free Software Foundation, Inc.
f3c13160 RM	3	This file is part of the GNU C Library.
	4
	5	The GNU C Library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	The GNU C Library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
59ba27a6	16	License along with the GNU C Library; if not, see
5a82c748	17	<https://www.gnu.org/licenses/>. */
f3c13160 RM	18
	19	#ifndef _TLS_H
	20	#define _TLS_H 1
	21
	22	# include <dl-sysdep.h>
	23
	24	#ifndef __ASSEMBLER__
9dcafc55	25	# include <stdbool.h>
f3c13160 RM	26	# include <stddef.h>
f3c13160 RM	27	# include <stdint.h>
aca1daef	28	# include <dl-dtv.h>
f3c13160 RM	29
	30	#else /* __ASSEMBLER__ */
	31	# include <tcb-offsets.h>
1e0a7fd0 MC	32	# define __ASSEMBLY__
1e0a7fd0 MC	33	# include <asm/ptrace.h>
f3c13160 RM	34	#endif /* __ASSEMBLER__ */
f3c13160 RM	35
1e0a7fd0 MC	36	#ifndef __powerpc64__
	37	/* Register r2 (tp) is reserved by the ABI as "thread pointer". */
	38	# define PT_THREAD_POINTER PT_R2
	39	# ifndef __ASSEMBLER__
	40	register void *__thread_register __asm__ ("r2");
	41	# endif
	42
	43	#else /* __powerpc64__ */
	44	/* Register r13 (tp) is reserved by the ABI as "thread pointer". */
	45	# define PT_THREAD_POINTER PT_R13
	46	# ifndef __ASSEMBLER__
	47	register void *__thread_register __asm__ ("r13");
	48	# endif
	49	#endif /* __powerpc64__ */
f3c13160	50
f3c13160 RM	51	#ifndef __ASSEMBLER__
f3c13160 RM	52
67385a01 CES	53	# include <hwcapinfo.h>
67385a01 CES	54
f3c13160 RM	55	/* Get system call information. */
	56	# include <sysdep.h>
	57
	58	/* The TP points to the start of the thread blocks. */
	59	# define TLS_DTV_AT_TP 1
498a2233	60	# define TLS_TCB_AT_TP 0
f3c13160	61
94659495 RM	62	/* We use the multiple_threads field in the pthread struct */
94659495 RM	63	#define TLS_MULTIPLE_THREADS_IN_TCB 1
f3c13160 RM	64
	65	/* Get the thread descriptor definition. */
	66	# include <nptl/descr.h>
	67
498a2233	68
35f1e827	69	/* The stack_guard is accessed directly by GCC -fstack-protector code,
991fa82b UD	70	so it is a part of public ABI. The dtv and pointer_guard fields
991fa82b UD	71	are private. */
f3c13160 RM	72	typedef struct
f3c13160 RM	73	{
67385a01 CES	74	/* Reservation for HWCAP data. To be accessed by GCC in
	75	__builtin_cpu_supports(), so it is a part of public ABI. */
	76	uint64_t hwcap;
	77	/* Reservation for AT_PLATFORM data. To be accessed by GCC in
	78	__builtin_cpu_is(), so it is a part of public ABI. Since there
	79	are different ABIs for 32 and 64 bit, we put this field in a
	80	previously empty padding space for powerpc64. */
	81	#ifndef __powerpc64__
	82	/* Padding to maintain alignment. */
	83	uint32_t padding;
	84	uint32_t at_platform;
	85	#endif
f0458cf4	86	uint32_t __unused;
67385a01 CES	87	/* Reservation for AT_PLATFORM data - powerpc64. */
	88	#ifdef __powerpc64__
	89	uint32_t at_platform;
	90	#endif
5b9bf191 AZ	91	/* Reservation for Dynamic System Optimizer ABI. */
	92	uintptr_t dso_slot2;
	93	uintptr_t dso_slot1;
	94	/* Reservation for tar register (ISA 2.07). */
	95	uintptr_t tar_save;
b525166b UW	96	/* GCC split stack support. */
b525166b UW	97	void *__private_ss;
e55a9b25 AZ	98	/* Reservation for the Event-Based Branching ABI. */
	99	uintptr_t ebb_handler;
	100	uintptr_t ebb_ctx_pointer;
	101	uintptr_t ebb_reserved1;
	102	uintptr_t ebb_reserved2;
00c2b3b9	103	uintptr_t pointer_guard;
35f1e827	104	uintptr_t stack_guard;
f3c13160 RM	105	dtv_t *dtv;
	106	} tcbhead_t;
	107
	108	/* This is the size of the initial TCB. */
299601a1	109	# define TLS_INIT_TCB_SIZE 0
f3c13160 RM	110
f3c13160 RM	111	/* Alignment requirements for the initial TCB. */
299601a1	112	# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread)
f3c13160 RM	113
f3c13160 RM	114	/* This is the size of the TCB. */
299601a1	115	# define TLS_TCB_SIZE 0
f3c13160 RM	116
f3c13160 RM	117	/* Alignment requirements for the TCB. */
299601a1	118	# define TLS_TCB_ALIGN __alignof__ (struct pthread)
f3c13160 RM	119
f3c13160 RM	120	/* This is the size we need before TCB. */
468777e1 UD	121	# define TLS_PRE_TCB_SIZE \
	122	(sizeof (struct pthread) \
	123	+ ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1)))
f3c13160	124
f3c13160 RM	125	/* The following assumes that TP (R2 or R13) points to the end of the
f3c13160 RM	126	TCB + 0x7000 (per the ABI). This implies that TCB address is
299601a1	127	TP - 0x7000. As we define TLS_DTV_AT_TP we can
f3c13160 RM	128	assume that the pthread struct is allocated immediately ahead of the
f3c13160 RM	129	TCB. This implies that the pthread_descr address is
299601a1	130	TP - (TLS_PRE_TCB_SIZE + 0x7000). */
f3c13160 RM	131	# define TLS_TCB_OFFSET 0x7000
	132
	133	/* Install the dtv pointer. The pointer passed is to the element with
	134	index -1 which contain the length. */
	135	# define INSTALL_DTV(tcbp, dtvp) \
299601a1	136	((tcbhead_t *) (tcbp))[-1].dtv = dtvp + 1
f3c13160 RM	137
	138	/* Install new dtv for current thread. */
	139	# define INSTALL_NEW_DTV(dtv) (THREAD_DTV() = (dtv))
	140
	141	/* Return dtv of given thread descriptor. */
299601a1	142	# define GET_DTV(tcbp) (((tcbhead_t *) (tcbp))[-1].dtv)
f3c13160 RM	143
	144	/* Code to initially initialize the thread pointer. This might need
	145	special attention since 'errno' is not yet available and if the
	146	operation can cause a failure 'errno' must not be touched. */
774f9285	147	# define TLS_INIT_TP(tcbp) \
56cf2763 AZ	148	({ \
56cf2763 AZ	149	__thread_register = (void *) (tcbp) + TLS_TCB_OFFSET; \
67385a01 CES	150	THREAD_SET_HWCAP (__tcb_hwcap); \
67385a01 CES	151	THREAD_SET_AT_PLATFORM (__tcb_platform); \
56cf2763 AZ	152	NULL; \
56cf2763 AZ	153	})
f3c13160	154
f12b4814 RM	155	/* Value passed to 'clone' for initialization of the thread register. */
f12b4814 RM	156	# define TLS_DEFINE_INIT_TP(tp, pd) \
56cf2763	157	void tp = (void ) (pd) + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE; \
67385a01 CES	158	(((tcbhead_t ) ((char ) tp - TLS_TCB_OFFSET))[-1].hwcap) = \
	159	THREAD_GET_HWCAP (); \
	160	(((tcbhead_t ) ((char ) tp - TLS_TCB_OFFSET))[-1].at_platform) = \
	161	THREAD_GET_AT_PLATFORM ();
f12b4814	162
f3c13160 RM	163	/* Return the address of the dtv for the current thread. */
f3c13160 RM	164	# define THREAD_DTV() \
35f1e827	165	(((tcbhead_t *) (__thread_register - TLS_TCB_OFFSET))[-1].dtv)
f3c13160 RM	166
	167	/* Return the thread descriptor for the current thread. */
	168	# define THREAD_SELF \
	169	((struct pthread *) (__thread_register \
299601a1	170	- TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
f3c13160	171
7f08f55a RM	172	/* Magic for libthread_db to know how to do THREAD_SELF. */
7f08f55a RM	173	# define DB_THREAD_SELF \
35f1e827	174	REGISTER (32, 32, PT_THREAD_POINTER * 4, \
7f08f55a	175	- TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE) \
35f1e827	176	REGISTER (64, 64, PT_THREAD_POINTER * 8, \
7f08f55a RM	177	- TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
7f08f55a RM	178
f3c13160 RM	179	/* Read member of the thread descriptor directly. */
	180	# define THREAD_GETMEM(descr, member) ((void)(descr), (THREAD_SELF)->member)
	181
	182	/* Same as THREAD_GETMEM, but the member offset can be non-constant. */
	183	# define THREAD_GETMEM_NC(descr, member, idx) \
	184	((void)(descr), (THREAD_SELF)->member[idx])
	185
	186	/* Set member of the thread descriptor directly. */
	187	# define THREAD_SETMEM(descr, member, value) \
	188	((void)(descr), (THREAD_SELF)->member = (value))
	189
	190	/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
	191	# define THREAD_SETMEM_NC(descr, member, idx, value) \
	192	((void)(descr), (THREAD_SELF)->member[idx] = (value))
	193
35f1e827 UD	194	/* Set the stack guard field in TCB head. */
	195	# define THREAD_SET_STACK_GUARD(value) \
	196	(((tcbhead_t ) ((char ) __thread_register \
	197	- TLS_TCB_OFFSET))[-1].stack_guard = (value))
	198	# define THREAD_COPY_STACK_GUARD(descr) \
	199	(((tcbhead_t ) ((char ) (descr) \
	200	+ TLS_PRE_TCB_SIZE))[-1].stack_guard \
	201	= ((tcbhead_t ) ((char ) __thread_register \
	202	- TLS_TCB_OFFSET))[-1].stack_guard)
	203
00c2b3b9 UD	204	/* Set the stack guard field in TCB head. */
	205	# define THREAD_GET_POINTER_GUARD() \
	206	(((tcbhead_t ) ((char ) __thread_register \
	207	- TLS_TCB_OFFSET))[-1].pointer_guard)
	208	# define THREAD_SET_POINTER_GUARD(value) \
	209	(THREAD_GET_POINTER_GUARD () = (value))
	210	# define THREAD_COPY_POINTER_GUARD(descr) \
	211	(((tcbhead_t ) ((char ) (descr) \
	212	+ TLS_PRE_TCB_SIZE))[-1].pointer_guard \
	213	= THREAD_GET_POINTER_GUARD())
56cf2763	214
67385a01 CES	215	/* hwcap field in TCB head. */
	216	# define THREAD_GET_HWCAP() \
	217	(((tcbhead_t ) ((char ) __thread_register \
	218	- TLS_TCB_OFFSET))[-1].hwcap)
	219	# define THREAD_SET_HWCAP(value) \
	220	(THREAD_GET_HWCAP () = (value))
	221
	222	/* at_platform field in TCB head. */
	223	# define THREAD_GET_AT_PLATFORM() \
	224	(((tcbhead_t ) ((char ) __thread_register \
	225	- TLS_TCB_OFFSET))[-1].at_platform)
	226	# define THREAD_SET_AT_PLATFORM(value) \
	227	(THREAD_GET_AT_PLATFORM () = (value))
00c2b3b9	228
299601a1 UD	229	/* l_tls_offset == 0 is perfectly valid on PPC, so we have to use some
	230	different value to mean unset l_tls_offset. */
	231	# define NO_TLS_OFFSET -1
	232
991fa82b	233	/* Get and set the global scope generation counter in struct pthread. */
a5df0318	234	#define THREAD_GSCOPE_IN_TCB 1
0a54ab53 UD	235	#define THREAD_GSCOPE_FLAG_UNUSED 0
	236	#define THREAD_GSCOPE_FLAG_USED 1
	237	#define THREAD_GSCOPE_FLAG_WAIT 2
0a54ab53 UD	238	#define THREAD_GSCOPE_RESET_FLAG() \
	239	do \
	240	{ int __res \
991fa82b	241	= atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
0a54ab53 UD	242	THREAD_GSCOPE_FLAG_UNUSED); \
0a54ab53 UD	243	if (__res == THREAD_GSCOPE_FLAG_WAIT) \
085a4412	244	lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \
0a54ab53 UD	245	} \
	246	while (0)
	247	#define THREAD_GSCOPE_SET_FLAG() \
991fa82b UD	248	do \
	249	{ \
	250	THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
	251	atomic_write_barrier (); \
	252	} \
	253	while (0)
0a54ab53	254
f3c13160 RM	255	#endif /* __ASSEMBLER__ */
	256
	257	#endif /* tls.h */