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authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /linuxthreads/sysdeps/powerpc/tls.h
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
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2.5-18.1
Diffstat (limited to 'linuxthreads/sysdeps/powerpc/tls.h')
-rw-r--r--linuxthreads/sysdeps/powerpc/tls.h160
1 files changed, 0 insertions, 160 deletions
diff --git a/linuxthreads/sysdeps/powerpc/tls.h b/linuxthreads/sysdeps/powerpc/tls.h
deleted file mode 100644
index f6eb48b434..0000000000
--- a/linuxthreads/sysdeps/powerpc/tls.h
+++ /dev/null
@@ -1,160 +0,0 @@
-/* Definitions for thread-local data handling. linuxthreads/PPC version.
- Copyright (C) 2003 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#ifndef _TLS_H
-#define _TLS_H
-
-#ifndef __ASSEMBLER__
-
-# include <pt-machine.h>
-# include <stddef.h>
-
-/* Type for the dtv. */
-typedef union dtv
-{
- size_t counter;
- void *pointer;
-} dtv_t;
-
-#else /* __ASSEMBLER__ */
-# include <tcb-offsets.h>
-#endif /* __ASSEMBLER__ */
-
-#ifdef HAVE_TLS_SUPPORT
-
-/* Signal that TLS support is available. */
-# define USE_TLS 1
-
-# ifndef __ASSEMBLER__
-
-/* This layout is actually wholly private and not affected by the ABI.
- Nor does it overlap the pthread data structure, so we need nothing
- extra here at all. */
-typedef struct
-{
- 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_descr_struct)
-
-/* This is the size of the TCB. */
-# define TLS_TCB_SIZE 0
-
-/* Alignment requirements for the TCB. */
-# define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct)
-
-/* This is the size we need before TCB. */
-# define TLS_PRE_TCB_SIZE \
- (sizeof (struct _pthread_descr_struct) \
- + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1)))
-
-/* The following assumes that TP (R2 or R13) is 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_descr 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
-
-/* The DTV is allocated at the TP; the TCB is placed elsewhere. */
-/* This is not really true for powerpc64. We are following alpha
- where the DTV pointer is first doubleword in the TCB. */
-# 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))[-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)
-
-/* We still need this define so that tcb-offsets.sym can override it and
- use THREAD_SELF to generate MULTIPLE_THREADS_OFFSET. */
-# define __thread_register ((void *) __thread_self)
-
-/* 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.
-
- The global register variable is declared in pt-machine.h with the
- wrong type, so we need some extra casts to get the desired result.
- This avoids a lvalue cast that gcc-3.4 does not like. */
-# define TLS_INIT_TP(TCBP, SECONDCALL) \
- (__thread_self = (struct _pthread_descr_struct *) \
- ((void *) (TCBP) + TLS_TCB_OFFSET), NULL)
-
-/* Return the address of the dtv for the current thread. */
-# define THREAD_DTV() \
- (((tcbhead_t *) ((void *) __thread_self - TLS_TCB_OFFSET))[-1].dtv)
-
-/* Return the thread descriptor for the current thread. */
-# undef THREAD_SELF
-# define THREAD_SELF \
- ((pthread_descr) (__thread_register \
- - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
-
-# undef INIT_THREAD_SELF
-# define INIT_THREAD_SELF(DESCR, NR) \
- (__thread_self = (struct _pthread_descr_struct *)((void *) (DESCR) \
- + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE))
-
-/* Make sure we have the p_multiple_threads member in the thread structure.
- See below. */
-# define TLS_MULTIPLE_THREADS_IN_TCB 1
-
-/* Get the thread descriptor definition. */
-# include <linuxthreads/descr.h>
-
-/* 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
-
-# endif /* __ASSEMBLER__ */
-
-#elif !defined __ASSEMBLER__
-
-/* This overlaps the start of the pthread_descr. System calls
- and such use this to find the multiple_threads flag and need
- to use the same offset relative to the thread register in both
- single-threaded and multi-threaded code. */
-typedef struct
-{
- void *tcb; /* Never used. */
- dtv_t *dtv; /* Never used. */
- void *self; /* Used only if multithreaded, and rarely. */
- int multiple_threads; /* Only this member is really used. */
-} tcbhead_t;
-
-#define NONTLS_INIT_TP \
- do { \
- static const tcbhead_t nontls_init_tp = { .multiple_threads = 0 }; \
- __thread_self = (__typeof (__thread_self)) &nontls_init_tp; \
- } while (0)
-
-#endif /* HAVE_TLS_SUPPORT */
-
-#endif /* tls.h */