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authorWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:00:19 -0600
committerWaldemar Brodkorb <wbx@openadk.org>2015-02-14 23:00:19 -0600
commit6b6ede3d15f04fe825cfa9f697507457e3640344 (patch)
treeefe9bf75eaf2200f89087ed0ef2ef350549ccd6d /libpthread/linuxthreads/sysdeps/arm/tls.h
parentf972c2262fd4efc2bbf9789dce145bb705acec24 (diff)
resolve merge
Diffstat (limited to 'libpthread/linuxthreads/sysdeps/arm/tls.h')
-rw-r--r--libpthread/linuxthreads/sysdeps/arm/tls.h171
1 files changed, 0 insertions, 171 deletions
diff --git a/libpthread/linuxthreads/sysdeps/arm/tls.h b/libpthread/linuxthreads/sysdeps/arm/tls.h
deleted file mode 100644
index df8d97009..000000000
--- a/libpthread/linuxthreads/sysdeps/arm/tls.h
+++ /dev/null
@@ -1,171 +0,0 @@
-/* Definitions for thread-local data handling. linuxthreads/ARM version.
- Copyright (C) 2004 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
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _TLS_H
-#define _TLS_H
-
-#ifndef __ASSEMBLER__
-
-# include <stdbool.h>
-# include <pt-machine.h>
-# include <stddef.h>
-
-/* Type for the dtv. */
-typedef union dtv
-{
- size_t counter;
- struct
- {
- void *val;
- bool is_static;
- } pointer;
-} dtv_t;
-
-typedef struct
-{
- dtv_t *dtv;
-
- /* Reserved for the thread implementation. Unused in LinuxThreads. */
- void *private;
-} tcbhead_t;
-#endif
-
-
-/* We can support TLS only if the floating-stack support is available.
- However, we want to compile in the support and test at runtime whether
- the running kernel can support it or not. To avoid bothering with the
- TLS support code at all, use configure --without-tls.
-
- We need USE_TLS to be consistently defined, for ldsodefs.h conditionals.
- But some of the code below can cause problems in building libpthread
- (e.g. useldt.h will defined FLOATING_STACKS when it shouldn't). */
-
-/* LinuxThreads can only support TLS if both floating stacks and support
- from the tools are available.
-
- We have to define USE_TLS consistently, or ldsodefs.h will lay out types
- differently between an NPTL build and a LinuxThreads build. It can be set
- for libc.so and not libpthread.so, but only if we provide appropriate padding
- in the _pthread_descr_struct.
-
- Currently nothing defines FLOATING_STACKS. We could assume this based on
- kernel version once the TLS patches are available in kernel.org.
-
- To avoid bothering with the TLS support code at all, use configure
- --without-tls. */
-
-#if defined HAVE_TLS_SUPPORT \
- && (defined FLOATING_STACKS || !defined IS_IN_libpthread)
-
-/* Signal that TLS support is available. */
-# define USE_TLS 1
-
-/* Include padding in _pthread_descr_struct so that libc can find p_errno,
- if libpthread will only include the padding because of the !IS_IN_libpthread
- check. */
-#ifndef FLOATING_STACKS
-# define INCLUDE_TLS_PADDING 1
-#endif
-
-# ifndef __ASSEMBLER__
-/* Get system call information. */
-# include <sysdep.h>
-
-/* This is the size of the initial TCB. */
-# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
-
-/* Alignment requirements for the initial TCB. */
-# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
-
-/* This is the size of the TCB. */
-# define TLS_TCB_SIZE sizeof (tcbhead_t)
-
-/* Alignment requirements for the TCB. */
-# define TLS_TCB_ALIGN __alignof__ (tcbhead_t)
-
-/* This is the size we need before TCB. */
-# define TLS_PRE_TCB_SIZE sizeof (struct _pthread_descr_struct)
-
-/* The DTV is allocated at the TP; the TCB is placed elsewhere. */
-# define TLS_DTV_AT_TP 1
-
-/* 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))->dtv = (DTVP) + 1)
-
-/* Install new dtv for current thread. */
-# define INSTALL_NEW_DTV(DTV) \
- (((tcbhead_t *)__builtin_thread_pointer ())->dtv = (DTV))
-
-/* Return dtv of given thread descriptor. */
-# define GET_DTV(TCBP) \
- (((tcbhead_t *) (TCBP))->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, SECONDCALL) \
- ({ INTERNAL_SYSCALL_DECL (err); \
- long result_var; \
- result_var = INTERNAL_SYSCALL_ARM (set_tls, err, 1, (TCBP)); \
- INTERNAL_SYSCALL_ERROR_P (result_var, err) \
- ? "unknown error" : NULL; })
-
-/* Return the address of the dtv for the current thread. */
-# define THREAD_DTV() \
- (((tcbhead_t *)__builtin_thread_pointer ())->dtv)
-
-/* Return the thread descriptor for the current thread. */
-# undef THREAD_SELF
-# define THREAD_SELF \
- ((pthread_descr)__builtin_thread_pointer () - 1)
-
-# undef INIT_THREAD_SELF
-# define INIT_THREAD_SELF(DESCR, NR) \
- TLS_INIT_TP ((struct _pthread_descr_struct *)(DESCR) + 1, 0)
-
-/* Get the thread descriptor definition. */
-# include <linuxthreads/descr.h>
-
-/* ??? Generic bits of LinuxThreads may call these macros with
- DESCR set to NULL. We are expected to be able to reference
- the "current" value.
-
- In our case, we'd really prefer to use DESCR, since lots of
- PAL_code calls would be expensive. We can only trust that
- the compiler does its job and unifies the multiple
- __builtin_thread_pointer instances. */
-
-#define THREAD_GETMEM(descr, member) \
- ((void) sizeof (descr), THREAD_SELF->member)
-#define THREAD_GETMEM_NC(descr, member) \
- ((void) sizeof (descr), THREAD_SELF->member)
-#define THREAD_SETMEM(descr, member, value) \
- ((void) sizeof (descr), THREAD_SELF->member = (value))
-#define THREAD_SETMEM_NC(descr, member, value) \
- ((void) sizeof (descr), THREAD_SELF->member = (value))
-
-/* Initializing the thread pointer will generate a SIGILL if the syscall
- is not available. */
-#define TLS_INIT_TP_EXPENSIVE 1
-
-# endif /* HAVE_TLS_SUPPORT */
-#endif /* __ASSEMBLER__ */
-
-#endif /* tls.h */