diff options
Diffstat (limited to 'sysdeps/powerpc/nptl')
| -rw-r--r-- | sysdeps/powerpc/nptl/Makefile | 20 | ||||
| -rw-r--r-- | sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h | 79 | ||||
| -rw-r--r-- | sysdeps/powerpc/nptl/elide.h | 125 | ||||
| -rw-r--r-- | sysdeps/powerpc/nptl/pthread_spin_lock.c | 43 | ||||
| -rw-r--r-- | sysdeps/powerpc/nptl/pthread_spin_trylock.c | 41 | ||||
| -rw-r--r-- | sysdeps/powerpc/nptl/pthread_spin_unlock.c | 27 | ||||
| -rw-r--r-- | sysdeps/powerpc/nptl/pthreaddef.h | 33 | ||||
| -rw-r--r-- | sysdeps/powerpc/nptl/tcb-offsets.sym | 32 | ||||
| -rw-r--r-- | sysdeps/powerpc/nptl/tls.h | 263 |
9 files changed, 0 insertions, 663 deletions
diff --git a/sysdeps/powerpc/nptl/Makefile b/sysdeps/powerpc/nptl/Makefile deleted file mode 100644 index 13fa630f2f..0000000000 --- a/sysdeps/powerpc/nptl/Makefile +++ /dev/null @@ -1,20 +0,0 @@ -# Copyright (C) 2003-2017 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/>. - -ifeq ($(subdir),csu) -gen-as-const-headers += tcb-offsets.sym -endif diff --git a/sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h b/sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h deleted file mode 100644 index f29119b794..0000000000 --- a/sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h +++ /dev/null @@ -1,79 +0,0 @@ -/* Machine-specific pthread type layouts. PowerPC version. - Copyright (C) 2003-2017 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 _BITS_PTHREADTYPES_ARCH_H -#define _BITS_PTHREADTYPES_ARCH_H 1 - -#include <bits/wordsize.h> - -#if __WORDSIZE == 64 -# define __SIZEOF_PTHREAD_MUTEX_T 40 -# define __SIZEOF_PTHREAD_ATTR_T 56 -# define __SIZEOF_PTHREAD_RWLOCK_T 56 -# define __SIZEOF_PTHREAD_BARRIER_T 32 -#else -# define __SIZEOF_PTHREAD_MUTEX_T 24 -# define __SIZEOF_PTHREAD_ATTR_T 36 -# define __SIZEOF_PTHREAD_RWLOCK_T 32 -# define __SIZEOF_PTHREAD_BARRIER_T 20 -#endif -#define __SIZEOF_PTHREAD_MUTEXATTR_T 4 -#define __SIZEOF_PTHREAD_COND_T 48 -#define __SIZEOF_PTHREAD_CONDATTR_T 4 -#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 -#define __SIZEOF_PTHREAD_BARRIERATTR_T 4 - -/* Definitions for internal mutex struct. */ -#define __PTHREAD_COMPAT_PADDING_MID -#define __PTHREAD_COMPAT_PADDING_END -#define __PTHREAD_MUTEX_LOCK_ELISION 1 - -#define __LOCK_ALIGNMENT -#define __ONCE_ALIGNMENT - -struct __pthread_rwlock_arch_t -{ - unsigned int __readers; - unsigned int __writers; - unsigned int __wrphase_futex; - unsigned int __writers_futex; - unsigned int __pad3; - unsigned int __pad4; -#if __WORDSIZE == 64 - int __cur_writer; - int __shared; - unsigned char __rwelision; - unsigned char __pad1[7]; - unsigned long int __pad2; - /* FLAGS must stay at this position in the structure to maintain - binary compatibility. */ - unsigned int __flags; -# define __PTHREAD_RWLOCK_ELISION_EXTRA 0, {0, 0, 0, 0, 0, 0, 0 } -#else - unsigned char __rwelision; - unsigned char __pad2; - unsigned char __shared; - /* FLAGS must stay at this position in the structure to maintain - binary compatibility. */ - unsigned char __flags; - int __cur_writer; -# define __PTHREAD_RWLOCK_ELISION_EXTRA 0 -#endif -}; - -#endif /* bits/pthreadtypes.h */ diff --git a/sysdeps/powerpc/nptl/elide.h b/sysdeps/powerpc/nptl/elide.h deleted file mode 100644 index 1c42814b71..0000000000 --- a/sysdeps/powerpc/nptl/elide.h +++ /dev/null @@ -1,125 +0,0 @@ -/* elide.h: Generic lock elision support for powerpc. - Copyright (C) 2015-2017 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 ELIDE_PPC_H -# define ELIDE_PPC_H - -#ifdef ENABLE_LOCK_ELISION -# include <htm.h> -# include <elision-conf.h> - -/* Get the new value of adapt_count according to the elision - configurations. Returns true if the system should retry again or false - otherwise. */ -static inline bool -__get_new_count (uint8_t *adapt_count, int attempt) -{ - /* A persistent failure indicates that a retry will probably - result in another failure. Use normal locking now and - for the next couple of calls. */ - if (_TEXASRU_FAILURE_PERSISTENT (__builtin_get_texasru ())) - { - if (__elision_aconf.skip_lock_internal_abort > 0) - *adapt_count = __elision_aconf.skip_lock_internal_abort; - return false; - } - /* Same logic as above, but for a number of temporary failures in a - a row. */ - else if (attempt <= 1 && __elision_aconf.skip_lock_out_of_tbegin_retries > 0 - && __elision_aconf.try_tbegin > 0) - *adapt_count = __elision_aconf.skip_lock_out_of_tbegin_retries; - return true; -} - -/* CONCURRENCY NOTES: - - The evaluation of the macro expression is_lock_free encompasses one or - more loads from memory locations that are concurrently modified by other - threads. For lock elision to work, this evaluation and the rest of the - critical section protected by the lock must be atomic because an - execution with lock elision must be equivalent to an execution in which - the lock would have been actually acquired and released. Therefore, we - evaluate is_lock_free inside of the transaction that represents the - critical section for which we want to use lock elision, which ensures - the atomicity that we require. */ - -/* Returns 0 if the lock defined by is_lock_free was elided. - ADAPT_COUNT is a per-lock state variable. */ -# define ELIDE_LOCK(adapt_count, is_lock_free) \ - ({ \ - int ret = 0; \ - if (adapt_count > 0) \ - (adapt_count)--; \ - else \ - for (int i = __elision_aconf.try_tbegin; i > 0; i--) \ - { \ - if (__libc_tbegin (0)) \ - { \ - if (is_lock_free) \ - { \ - ret = 1; \ - break; \ - } \ - __libc_tabort (_ABORT_LOCK_BUSY); \ - } \ - else \ - if (!__get_new_count (&adapt_count,i)) \ - break; \ - } \ - ret; \ - }) - -# define ELIDE_TRYLOCK(adapt_count, is_lock_free, write) \ - ({ \ - int ret = 0; \ - if (__elision_aconf.try_tbegin > 0) \ - { \ - if (write) \ - __libc_tabort (_ABORT_NESTED_TRYLOCK); \ - ret = ELIDE_LOCK (adapt_count, is_lock_free); \ - } \ - ret; \ - }) - - -static inline bool -__elide_unlock (int is_lock_free) -{ - if (is_lock_free) - { - /* This code is expected to crash when trying to unlock a lock not - held by this thread. More information is available in the - __pthread_rwlock_unlock() implementation. */ - __libc_tend (0); - return true; - } - return false; -} - -# define ELIDE_UNLOCK(is_lock_free) \ - __elide_unlock (is_lock_free) - -# else - -# define ELIDE_LOCK(adapt_count, is_lock_free) 0 -# define ELIDE_TRYLOCK(adapt_count, is_lock_free, write) 0 -# define ELIDE_UNLOCK(is_lock_free) 0 - -#endif /* ENABLE_LOCK_ELISION */ - -#endif diff --git a/sysdeps/powerpc/nptl/pthread_spin_lock.c b/sysdeps/powerpc/nptl/pthread_spin_lock.c deleted file mode 100644 index e377feb1cf..0000000000 --- a/sysdeps/powerpc/nptl/pthread_spin_lock.c +++ /dev/null @@ -1,43 +0,0 @@ -/* Copyright (C) 2003-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003. - - 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/>. */ - -#include "pthreadP.h" - -int -pthread_spin_lock (pthread_spinlock_t *lock) -{ - unsigned int __tmp; - - asm volatile ( - "1: lwarx %0,0,%1" MUTEX_HINT_ACQ "\n" - " cmpwi 0,%0,0\n" - " bne- 2f\n" - " stwcx. %2,0,%1\n" - " bne- 2f\n" - __ARCH_ACQ_INSTR "\n" - " .subsection 1\n" - "2: lwzx %0,0,%1\n" - " cmpwi 0,%0,0\n" - " bne 2b\n" - " b 1b\n" - " .previous" - : "=&r" (__tmp) - : "r" (lock), "r" (1) - : "cr0", "memory"); - return 0; -} diff --git a/sysdeps/powerpc/nptl/pthread_spin_trylock.c b/sysdeps/powerpc/nptl/pthread_spin_trylock.c deleted file mode 100644 index d81d984237..0000000000 --- a/sysdeps/powerpc/nptl/pthread_spin_trylock.c +++ /dev/null @@ -1,41 +0,0 @@ -/* Copyright (C) 2003-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003. - - 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/>. */ - -#include <errno.h> -#include "pthreadP.h" - -int -pthread_spin_trylock (pthread_spinlock_t *lock) -{ - unsigned int old; - int err = EBUSY; - - asm ("1: lwarx %0,0,%2" MUTEX_HINT_ACQ "\n" - " cmpwi 0,%0,0\n" - " bne 2f\n" - " stwcx. %3,0,%2\n" - " bne- 1b\n" - " li %1,0\n" - __ARCH_ACQ_INSTR "\n" - "2: " - : "=&r" (old), "=&r" (err) - : "r" (lock), "r" (1), "1" (err) - : "cr0", "memory"); - - return err; -} diff --git a/sysdeps/powerpc/nptl/pthread_spin_unlock.c b/sysdeps/powerpc/nptl/pthread_spin_unlock.c deleted file mode 100644 index fa30a82491..0000000000 --- a/sysdeps/powerpc/nptl/pthread_spin_unlock.c +++ /dev/null @@ -1,27 +0,0 @@ -/* pthread_spin_unlock -- unlock a spin lock. PowerPC version. - Copyright (C) 2007-2017 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/>. */ - -#include "pthreadP.h" -#include <lowlevellock.h> - -int -pthread_spin_unlock (pthread_spinlock_t *lock) -{ - atomic_store_release (lock, 0); - return 0; -} diff --git a/sysdeps/powerpc/nptl/pthreaddef.h b/sysdeps/powerpc/nptl/pthreaddef.h deleted file mode 100644 index e3e407a4c4..0000000000 --- a/sysdeps/powerpc/nptl/pthreaddef.h +++ /dev/null @@ -1,33 +0,0 @@ -/* Copyright (C) 2003-2017 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/>. */ - -/* Default stack size. */ -#define ARCH_STACK_DEFAULT_SIZE (4 * 1024 * 1024) - -/* Required stack pointer alignment at beginning. The ABI requires 16 - bytes (for both 32-bit and 64-bit PowerPC). */ -#define STACK_ALIGN 16 - -/* Minimal stack size after allocating thread descriptor and guard size. */ -#define MINIMAL_REST_STACK 4096 - -/* Alignment requirement for TCB. */ -#define TCB_ALIGNMENT 16 - - -/* Location of current stack frame. */ -#define CURRENT_STACK_FRAME __builtin_frame_address (0) diff --git a/sysdeps/powerpc/nptl/tcb-offsets.sym b/sysdeps/powerpc/nptl/tcb-offsets.sym deleted file mode 100644 index 7c9fd33562..0000000000 --- a/sysdeps/powerpc/nptl/tcb-offsets.sym +++ /dev/null @@ -1,32 +0,0 @@ -#include <sysdep.h> -#include <tls.h> -#include <kernel-features.h> - --- - --- Abuse tls.h macros to derive offsets relative to the thread register. -# undef __thread_register -# define __thread_register ((void *) 0) -# define thread_offsetof(mem) ((ptrdiff_t) THREAD_SELF + offsetof (struct pthread, mem)) - - -#if TLS_MULTIPLE_THREADS_IN_TCB -MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads) -#endif -TID thread_offsetof (tid) -POINTER_GUARD (offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t)) -TAR_SAVE (offsetof (tcbhead_t, tar_save) - TLS_TCB_OFFSET - sizeof (tcbhead_t)) -DSO_SLOT1 (offsetof (tcbhead_t, dso_slot1) - TLS_TCB_OFFSET - sizeof (tcbhead_t)) -DSO_SLOT2 (offsetof (tcbhead_t, dso_slot2) - TLS_TCB_OFFSET - sizeof (tcbhead_t)) -#ifdef __powerpc64__ -TCB_AT_PLATFORM (offsetof (tcbhead_t, at_platform) - TLS_TCB_OFFSET - sizeof(tcbhead_t)) -#endif -TM_CAPABLE (offsetof (tcbhead_t, tm_capable) - TLS_TCB_OFFSET - sizeof (tcbhead_t)) -#ifndef __powerpc64__ -TCB_AT_PLATFORM (offsetof (tcbhead_t, at_platform) - TLS_TCB_OFFSET - sizeof(tcbhead_t)) -PADDING (offsetof (tcbhead_t, padding) - TLS_TCB_OFFSET - sizeof(tcbhead_t)) -#endif -TCB_HWCAP (offsetof (tcbhead_t, hwcap) - TLS_TCB_OFFSET - sizeof (tcbhead_t)) -#ifndef __ASSUME_PRIVATE_FUTEX -PRIVATE_FUTEX_OFFSET thread_offsetof (header.private_futex) -#endif diff --git a/sysdeps/powerpc/nptl/tls.h b/sysdeps/powerpc/nptl/tls.h deleted file mode 100644 index 7556e7c8b8..0000000000 --- a/sysdeps/powerpc/nptl/tls.h +++ /dev/null @@ -1,263 +0,0 @@ -/* Definition for thread-local data handling. NPTL/PowerPC version. - Copyright (C) 2003-2017 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 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__ - -# 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 - /* Indicate if HTM capable (ISA 2.07). */ - uint32_t tm_capable; - /* 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))) - -# ifndef __powerpc64__ -/* Register r2 (tp) is reserved by the ABI as "thread pointer". */ -register void *__thread_register __asm__ ("r2"); -# define PT_THREAD_POINTER PT_R2 -# else -/* Register r13 (tp) is reserved by the ABI as "thread pointer". */ -register void *__thread_register __asm__ ("r13"); -# define PT_THREAD_POINTER PT_R13 -# endif - -/* 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_TM_CAPABLE (__tcb_hwcap & PPC_FEATURE2_HAS_HTM ? 1 : 0); \ - 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].tm_capable) = \ - THREAD_GET_TM_CAPABLE (); \ - (((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()) - -/* tm_capable field in TCB head. */ -# define THREAD_GET_TM_CAPABLE() \ - (((tcbhead_t *) ((char *) __thread_register \ - - TLS_TCB_OFFSET))[-1].tm_capable) -# define THREAD_SET_TM_CAPABLE(value) \ - (THREAD_GET_TM_CAPABLE () = (value)) - -/* 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_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 */ |