From c68d0fa2d88fc2134a38d99e7e944828384a7671 Mon Sep 17 00:00:00 2001 From: Austin Foxley Date: Sat, 17 Oct 2009 12:26:24 -0700 Subject: libpthread/nptl: core of the "Native Posix Threading Library" for uClibc targetting arm,sh,i386,mips,sparc for now Signed-off-by: Austin Foxley --- .../nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h | 137 +++++++++++++++++ .../unix/sysv/linux/arm/bits/pthreadtypes.h | 168 +++++++++++++++++++++ .../sysdeps/unix/sysv/linux/arm/bits/semaphore.h | 39 +++++ 3 files changed, 344 insertions(+) create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/pthreadtypes.h create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/semaphore.h (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits') diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h new file mode 100644 index 000000000..c0b00fe45 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/atomic.h @@ -0,0 +1,137 @@ +/* Copyright (C) 2002, 2003, 2004, 2005 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. */ + +#include +#include + + +typedef int8_t atomic8_t; +typedef uint8_t uatomic8_t; +typedef int_fast8_t atomic_fast8_t; +typedef uint_fast8_t uatomic_fast8_t; + +typedef int32_t atomic32_t; +typedef uint32_t uatomic32_t; +typedef int_fast32_t atomic_fast32_t; +typedef uint_fast32_t uatomic_fast32_t; + +typedef intptr_t atomicptr_t; +typedef uintptr_t uatomicptr_t; +typedef intmax_t atomic_max_t; +typedef uintmax_t uatomic_max_t; + +void __arm_link_error (void); + +#ifdef __thumb__ + +/* Note that to allow efficient implementation the arguemtns are reversed + relative to atomic_exchange_acq. */ +int __thumb_swpb (int newvalue, void *mem) + attribute_hidden; +unsigned int __thumb_swp (unsigned int newvalue, void *mem) + attribute_hidden; +unsigned int __thumb_cmpxchg (unsigned int oldval, unsigned int newval, void *mem) + attribute_hidden; + +#define atomic_exchange_acq(mem, newvalue) \ + ({ __typeof (*mem) result; \ + if (sizeof (*mem) == 1) \ + result = __thumb_swpb (newvalue, mem); \ + else if (sizeof (*mem) == 4) \ + result = __thumb_swp (newvalue, mem); \ + else \ + { \ + result = 0; \ + abort (); \ + } \ + result; }) + +#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ + ({ __arm_link_error (); oldval; }) + +#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ + ({ __arm_link_error (); oldval; }) + +#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ + ((__typeof (oldval)) __thumb_cmpxchg (oldval, newval, mem)) + +#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ + ({ __arm_link_error (); oldval; }) + +#else +/* ARM mode. */ + +#define atomic_exchange_acq(mem, newvalue) \ + ({ __typeof (*mem) _xchg_result; \ + if (sizeof (*mem) == 1) \ + __asm__ __volatile__ ("swpb %0, %1, [%2]" \ + : "=&r,&r" (_xchg_result) \ + : "r,0" (newvalue), "r,r" (mem) : "memory"); \ + else if (sizeof (*mem) == 4) \ + __asm__ __volatile__ ("swp %0, %1, [%2]" \ + : "=&r,&r" (_xchg_result) \ + : "r,0" (newvalue), "r,r" (mem) : "memory"); \ + else \ + { \ + _xchg_result = 0; \ + abort (); \ + } \ + _xchg_result; }) + +/* Atomic compare and exchange. This sequence relies on the kernel to + provide a compare and exchange operation which is atomic on the + current architecture, either via cleverness on pre-ARMv6 or via + ldrex / strex on ARMv6. */ + +#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ + ({ __arm_link_error (); oldval; }) + +#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \ + ({ __arm_link_error (); oldval; }) + +/* It doesn't matter what register is used for a_oldval2, but we must + specify one to work around GCC PR rtl-optimization/21223. Otherwise + it may cause a_oldval or a_tmp to be moved to a different register. */ + +#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \ + ({ register __typeof (oldval) a_oldval asm ("r0"); \ + register __typeof (oldval) a_newval asm ("r1") = (newval); \ + register __typeof (mem) a_ptr asm ("r2") = (mem); \ + register __typeof (oldval) a_tmp asm ("r3"); \ + register __typeof (oldval) a_oldval2 asm ("r4") = (oldval); \ + __asm__ __volatile__ \ + ("0:\tldr\t%1,[%3]\n\t" \ + "cmp\t%1, %4\n\t" \ + "bne\t1f\n\t" \ + "mov\t%0, %4\n\t" \ + "mov\t%1, #0xffff0fff\n\t" \ + "mov\tlr, pc\n\t" \ + "add\tpc, %1, #(0xffff0fc0 - 0xffff0fff)\n\t" \ + "bcc\t0b\n\t" \ + "mov\t%1, %4\n\t" \ + "1:" \ + : "=&r" (a_oldval), "=&r" (a_tmp) \ + : "r" (a_newval), "r" (a_ptr), "r" (a_oldval2) \ + : "ip", "lr", "cc", "memory"); \ + a_tmp; }) + +#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ + ({ __arm_link_error (); oldval; }) + +#endif /* __thumb__ */ + diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/pthreadtypes.h new file mode 100644 index 000000000..350fb9f81 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/pthreadtypes.h @@ -0,0 +1,168 @@ +/* Copyright (C) 2002, 2003, 2004, 2005, 2006 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 _BITS_PTHREADTYPES_H +#define _BITS_PTHREADTYPES_H 1 + +#define __SIZEOF_PTHREAD_ATTR_T 36 +#define __SIZEOF_PTHREAD_MUTEX_T 24 +#define __SIZEOF_PTHREAD_MUTEXATTR_T 4 +#define __SIZEOF_PTHREAD_COND_T 48 +#define __SIZEOF_PTHREAD_COND_COMPAT_T 12 +#define __SIZEOF_PTHREAD_CONDATTR_T 4 +#define __SIZEOF_PTHREAD_RWLOCK_T 32 +#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8 +#define __SIZEOF_PTHREAD_BARRIER_T 20 +#define __SIZEOF_PTHREAD_BARRIERATTR_T 4 + + +/* Thread identifiers. The structure of the attribute type is not + exposed on purpose. */ +typedef unsigned long int pthread_t; + + +typedef union +{ + char __size[__SIZEOF_PTHREAD_ATTR_T]; + long int __align; +} pthread_attr_t; + + +typedef struct __pthread_internal_slist +{ + struct __pthread_internal_slist *__next; +} __pthread_slist_t; + + +/* Data structures for mutex handling. The structure of the attribute + type is not exposed on purpose. */ +typedef union +{ + struct __pthread_mutex_s + { + int __lock; + unsigned int __count; + int __owner; + /* KIND must stay at this position in the structure to maintain + binary compatibility. */ + int __kind; + unsigned int __nusers; + __extension__ union + { + int __spins; + __pthread_slist_t __list; + }; + } __data; + char __size[__SIZEOF_PTHREAD_MUTEX_T]; + long int __align; +} pthread_mutex_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_MUTEXATTR_T]; + long int __align; +} pthread_mutexattr_t; + + +/* Data structure for conditional variable handling. The structure of + the attribute type is not exposed on purpose. */ +typedef union +{ + struct + { + int __lock; + unsigned int __futex; + __extension__ unsigned long long int __total_seq; + __extension__ unsigned long long int __wakeup_seq; + __extension__ unsigned long long int __woken_seq; + void *__mutex; + unsigned int __nwaiters; + unsigned int __broadcast_seq; + } __data; + char __size[__SIZEOF_PTHREAD_COND_T]; + __extension__ long long int __align; +} pthread_cond_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_CONDATTR_T]; + long int __align; +} pthread_condattr_t; + + +/* Keys for thread-specific data */ +typedef unsigned int pthread_key_t; + + +/* Once-only execution */ +typedef int pthread_once_t; + + +#if defined __USE_UNIX98 || defined __USE_XOPEN2K +/* Data structure for read-write lock variable handling. The + structure of the attribute type is not exposed on purpose. */ +typedef union +{ + struct + { + int __lock; + unsigned int __nr_readers; + unsigned int __readers_wakeup; + unsigned int __writer_wakeup; + unsigned int __nr_readers_queued; + unsigned int __nr_writers_queued; + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned int __flags; + int __writer; + } __data; + char __size[__SIZEOF_PTHREAD_RWLOCK_T]; + long int __align; +} pthread_rwlock_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T]; + long int __align; +} pthread_rwlockattr_t; +#endif + + +#ifdef __USE_XOPEN2K +/* POSIX spinlock data type. */ +typedef volatile int pthread_spinlock_t; + + +/* POSIX barriers data type. The structure of the type is + deliberately not exposed. */ +typedef union +{ + char __size[__SIZEOF_PTHREAD_BARRIER_T]; + long int __align; +} pthread_barrier_t; + +typedef union +{ + char __size[__SIZEOF_PTHREAD_BARRIERATTR_T]; + int __align; +} pthread_barrierattr_t; +#endif + + +#endif /* bits/pthreadtypes.h */ + diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/semaphore.h new file mode 100644 index 000000000..3d274eea2 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/bits/semaphore.h @@ -0,0 +1,39 @@ +/* Copyright (C) 2002, 2005 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 _SEMAPHORE_H +# error "Never use directly; include instead." +#endif + + +#define __SIZEOF_SEM_T 16 + + +/* Value returned if `sem_open' failed. */ +#define SEM_FAILED ((sem_t *) 0) + +/* Maximum value the semaphore can have. */ +#define SEM_VALUE_MAX ((int) ((~0u) >> 1)) + + +typedef union +{ + char __size[__SIZEOF_SEM_T]; + long int __align; +} sem_t; + -- cgit v1.2.3