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Diffstat (limited to 'sysdeps/tile/nptl/tls.h')
-rw-r--r--sysdeps/tile/nptl/tls.h199
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diff --git a/sysdeps/tile/nptl/tls.h b/sysdeps/tile/nptl/tls.h
deleted file mode 100644
index c908fb8e1f..0000000000
--- a/sysdeps/tile/nptl/tls.h
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-/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
-
- 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
- <http://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>
-
-/* Type for the dtv. */
-typedef union dtv
-{
- size_t counter;
- struct
- {
- void *val;
- bool is_static;
- } pointer;
-} dtv_t;
-
-#else /* __ASSEMBLER__ */
-# include <tcb-offsets.h>
-#endif /* __ASSEMBLER__ */
-
-
-#ifndef __ASSEMBLER__
-
-/* 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
-{
- void *feedback_data;
- uintptr_t pointer_guard;
- uintptr_t stack_guard;
- dtv_t *dtv;
-} tcbhead_t;
-
-/* This is the size of the initial TCB. Because our TCB is before the thread
- pointer, we don't need this. */
-# 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. Because our TCB is before the thread
- pointer, we don't need this. */
-# 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 - actually, it includes the TCB. */
-# define TLS_PRE_TCB_SIZE \
- (sizeof (struct pthread) \
- + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1)))
-
-/* Return the thread descriptor (tp) for the current thread. */
-register void *__thread_pointer asm ("tp");
-
-/* The thread pointer (in hardware register tp) points to the end of
- the TCB. The pthread_descr structure is immediately in front of the TCB. */
-# define TLS_TCB_OFFSET 0
-
-/* 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 (tp). */
-# define TLS_INIT_TP(tcbp) \
- (__thread_pointer = (char *)(tcbp) + TLS_TCB_OFFSET, 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
-
-/* Return the address of the dtv for the current thread. */
-# define THREAD_DTV() \
- (((tcbhead_t *) (__thread_pointer - TLS_TCB_OFFSET))[-1].dtv)
-
-/* Return the thread descriptor for the current thread. */
-# define THREAD_SELF \
- ((struct pthread *) (__thread_pointer \
- - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
-
-/* Magic for libthread_db to know how to do THREAD_SELF. */
-#ifdef __tilegx__
-# define DB_THREAD_SELF \
- REGISTER (64, 64, REG_TP * 8, - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
-#else
-# define DB_THREAD_SELF \
- REGISTER (32, 32, REG_TP * 4, - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
-#endif
-
-/* Read member of the thread descriptor directly. */
-# define THREAD_GETMEM(descr, member) (descr->member)
-
-/* Same as THREAD_GETMEM, but the member offset can be non-constant. */
-# define THREAD_GETMEM_NC(descr, member, idx) \
- (descr->member[idx])
-
-/* Set member of the thread descriptor directly. */
-# define THREAD_SETMEM(descr, member, value) \
- (descr->member = (value))
-
-/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
-# define THREAD_SETMEM_NC(descr, member, idx, value) \
- (descr->member[idx] = (value))
-
-/* Set the stack guard field in TCB head. */
-# define THREAD_SET_STACK_GUARD(value) \
- (((tcbhead_t *) ((char *) __thread_pointer \
- - 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_pointer \
- - TLS_TCB_OFFSET))[-1].stack_guard)
-
-/* Set the pointer guard field in TCB head. */
-# define THREAD_GET_POINTER_GUARD() \
- (((tcbhead_t *) ((char *) __thread_pointer \
- - 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())
-
-/* l_tls_offset == 0 is perfectly valid on Tile, 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_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)
-#define THREAD_GSCOPE_WAIT() \
- GL(dl_wait_lookup_done) ()
-
-#endif /* __ASSEMBLER__ */
-
-#endif /* tls.h */
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