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Diffstat (limited to 'sysdeps/tile/nptl/tls.h')
| -rw-r--r-- | sysdeps/tile/nptl/tls.h | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/sysdeps/tile/nptl/tls.h b/sysdeps/tile/nptl/tls.h deleted file mode 100644 index 45d6c53e21..0000000000 --- a/sysdeps/tile/nptl/tls.h +++ /dev/null @@ -1,185 +0,0 @@ -/* Copyright (C) 2011-2018 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> -# include <dl-dtv.h> - -#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. */ -# define DB_THREAD_SELF \ - REGISTER (64, 64, REG_TP * 8, - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE) - -/* 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_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) -#define THREAD_GSCOPE_WAIT() \ - GL(dl_wait_lookup_done) () - -#endif /* __ASSEMBLER__ */ - -#endif /* tls.h */ |