diff options
Diffstat (limited to 'libpthread')
18 files changed, 1340 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/or1k/Makefile.arch b/libpthread/nptl/sysdeps/or1k/Makefile.arch new file mode 100644 index 000000000..5be08a44c --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/Makefile.arch @@ -0,0 +1,4 @@ +# Makefile for uClibc-ng NPTL +# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + +libc_arch_a_SSRC = libc-tls.S diff --git a/libpthread/nptl/sysdeps/or1k/dl-tls.h b/libpthread/nptl/sysdeps/or1k/dl-tls.h new file mode 100644 index 000000000..5613e21e2 --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/dl-tls.h @@ -0,0 +1,26 @@ +/* Copyright (C) 2005-2016 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/>. */ + +/* Type used for the representation of TLS information in the GOT. */ +typedef struct +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + +extern void *__tls_get_addr (tls_index *ti); diff --git a/libpthread/nptl/sysdeps/or1k/libc-tls.c b/libpthread/nptl/sysdeps/or1k/libc-tls.c new file mode 100644 index 000000000..7f440fb06 --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/libc-tls.c @@ -0,0 +1,36 @@ +/* Copyright (C) 2005-2016 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 <sysdeps/generic/libc-tls.c> +#include <dl-tls.h> + +/* On Microblaze, linker optimizations are not required, so __tls_get_addr + can be called even in statically linked binaries. In this case module + must be always 1 and PT_TLS segment exist in the binary, otherwise it + would not link. */ + +#if defined(USE_TLS) && USE_TLS + +void * +__tls_get_addr (tls_index *ti) +{ + dtv_t *dtv = THREAD_DTV (); + return (char *) dtv[1].pointer.val + ti->ti_offset; +} + +#endif diff --git a/libpthread/nptl/sysdeps/or1k/pthread_spin_lock.c b/libpthread/nptl/sysdeps/or1k/pthread_spin_lock.c new file mode 100644 index 000000000..cec3acbc6 --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/pthread_spin_lock.c @@ -0,0 +1,65 @@ +/* pthread_spin_lock -- lock a spin lock. Generic version. + Copyright (C) 2012-2016 Free Software Foundation, Inc. + + 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 <atomic.h> +#include "pthreadP.h" + +/* A machine-specific version can define SPIN_LOCK_READS_BETWEEN_CMPXCHG + to the number of plain reads that it's optimal to spin on between uses + of atomic_compare_and_exchange_val_acq. If spinning forever is optimal + then use -1. If no plain reads here would ever be optimal, use 0. */ +#define SPIN_LOCK_READS_BETWEEN_CMPXCHG 1000 + +int +pthread_spin_lock (pthread_spinlock_t *lock) +{ + /* atomic_exchange usually takes less instructions than + atomic_compare_and_exchange. On the other hand, + atomic_compare_and_exchange potentially generates less bus traffic + when the lock is locked. + We assume that the first try mostly will be successful, and we use + atomic_exchange. For the subsequent tries we use + atomic_compare_and_exchange. */ + if (atomic_exchange_acq (lock, 1) == 0) + return 0; + + do + { + /* The lock is contended and we need to wait. Going straight back + to cmpxchg is not a good idea on many targets as that will force + expensive memory synchronizations among processors and penalize other + running threads. + On the other hand, we do want to update memory state on the local core + once in a while to avoid spinning indefinitely until some event that + will happen to update local memory as a side-effect. */ + if (SPIN_LOCK_READS_BETWEEN_CMPXCHG >= 0) + { + int wait = SPIN_LOCK_READS_BETWEEN_CMPXCHG; + + while (*lock != 0 && wait > 0) + --wait; + } + else + { + while (*lock != 0) + ; + } + } + while (atomic_compare_and_exchange_val_acq (lock, 1, 0) != 0); + + return 0; +} diff --git a/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c b/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c new file mode 100644 index 000000000..4e9aa64d3 --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c @@ -0,0 +1,26 @@ +/* pthread_spin_trylock -- trylock a spin lock. Generic version. + Copyright (C) 2012-2016 Free Software Foundation, Inc. + + 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 <atomic.h> +#include "pthreadP.h" + +int +pthread_spin_trylock (pthread_spinlock_t *lock) +{ + return atomic_exchange_acq (lock, 1) ? EBUSY : 0; +} diff --git a/libpthread/nptl/sysdeps/or1k/pthreaddef.h b/libpthread/nptl/sysdeps/or1k/pthreaddef.h new file mode 100644 index 000000000..e8da3d965 --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/pthreaddef.h @@ -0,0 +1,38 @@ +/* Copyright (C) 2002-2012 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 (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. */ +#define STACK_ALIGN 16 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 16 + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) + + +/* XXX Until we have a better place keep the definitions here. */ +#define __exit_thread_inline(val) \ + INLINE_SYSCALL (exit, 1, (val)) + diff --git a/libpthread/nptl/sysdeps/or1k/tcb-offsets.sym b/libpthread/nptl/sysdeps/or1k/tcb-offsets.sym new file mode 100644 index 000000000..86025a402 --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/tcb-offsets.sym @@ -0,0 +1,6 @@ +#include <sysdep.h> +#include <tls.h> + +MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) +TID_OFFSET offsetof (struct pthread, tid) +TP_TO_PTHREAD_OFFSET -(sizeof (struct pthread) + sizeof (tcbhead_t)) diff --git a/libpthread/nptl/sysdeps/or1k/tls.h b/libpthread/nptl/sysdeps/or1k/tls.h new file mode 100644 index 000000000..25bdb5e5a --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/tls.h @@ -0,0 +1,201 @@ +/* Definition for thread-local data handling. NPTL/OR1K version. + Copyright (C) 2005, 2007, 2011 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 + +#ifndef __ASSEMBLER__ +# include <stdbool.h> +# include <stddef.h> +# include <stdint.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; +} tcbhead_t; + +register tcbhead_t *__thread_self __asm__("r10"); + +# define TLS_MULTIPLE_THREADS_IN_TCB 1 + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> +#endif /* __ASSEMBLER__ */ + +/* We require TLS support in the tools. */ +#define HAVE_TLS_SUPPORT 1 +#define HAVE_TLS_MODEL_ATTRIBUTE 1 +#define HAVE___THREAD 1 + +/* Signal that TLS support is available. */ +#define USE_TLS 1 + +#ifndef __ASSEMBLER__ + +/* Get system call information. */ +# include <sysdep.h> + +/* The TP points to the start of the TLS block. + * As I understand it, this isn't strictly that "TP points to DTV" - it's + * more where to place the TCB in the TLS block. This will place it in + * the beginning. + * + * Layout: + * ------------------------------------ + * | PRE | TCB | TLS MEMORY .. | + * ------------------------------------ + * ^ r10 / TP + * + * PRE is the struct pthread described below + * TCB is tcbhead_t + * TLS memory is where the TLS program sections are loaded + * + * See _dl_allocate_tls_storage and __libc_setup_tls for more information. + */ +# define TLS_DTV_AT_TP 1 + +/* Get the thread descriptor definition. */ +# include <../../descr.h> + +/* Requirements for the TCB. */ +# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t) +# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t) + +# define TLS_TCB_SIZE sizeof (tcbhead_t) +# define TLS_TCB_ALIGN __alignof__ (tcbhead_t) + +/* This is the size of the TCB. */ + +/* This is the size we need before TCB. + * To support THREAD_GETMEM with friends we want to have a + * struct pthread available. + * Yank it in infront of everything, I'm sure nobody will mind. + * + * This memory is really allocated PRE the TLS block, so it's possible + * to do ((char*)tlsblock) - TLS_PRE_TCB_SIZE to access it. + * This is done for THREAD_SELF. */ +# define TLS_PRE_TCB_SIZE sizeof (struct pthread) + + +/* Install the dtv pointer. + * When called, dtvp is a pointer not the DTV per say (which should start + * with the generation counter) but to the length of the DTV. + * We can always index with -1, so we store dtvp[1] + */ +# define INSTALL_DTV(tcbp, dtvp) \ + (((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1) + +/* Install new dtv for current thread + * In a logicial world dtv here would also point to the length of the DTV. + * However it does not, this time it points to the generation counter, + * so just store it. + * + * Note: -1 is still valid and contains the length. */ +# define INSTALL_NEW_DTV(dtv) \ + (THREAD_DTV() = (dtv)) + +/* Return dtv of given thread descriptor. */ +# define GET_DTV(tcbp) \ + (((tcbhead_t *) (tcbp))->dtv) + +/* Code to initially initialize the thread pointer. + * + * Set TP to the address _after_ tcbhead_t. This will allow us + * to change the size of tcbhead_t without having to re-link everything. + * + * secondcall has something to do with USE__THREAD, + * seems to always be 0 so we don't care about it. + * + * This has to return NULL on success (or a string with the failure text). + * It's hard to fail this, so return NULL always. + */ +# define TLS_INIT_TP(tcbp, secondcall) \ + ({__thread_self = ((tcbhead_t *)tcbp + 1); NULL;}) + +/* Return the address of the dtv for the current thread. + * + * Dereference TP, offset to dtv - really straightforward. + * Remember that we made TP point to after tcb, so we need to reverse that. + */ +# define THREAD_DTV() \ + ((((tcbhead_t *)__thread_self)-1)->dtv) + +/* Return the thread descriptor for the current thread. + * + * Return a pointer to the TLS_PRE area where we allocated space for + * a struct pthread. Again, TP points to after tcbhead_t, compensate with + * TLS_INIT_TCB_SIZE. + * + * I regard this is a seperate system from the "normal" TLS. + */ +# define THREAD_SELF \ + ((struct pthread *) ((char *) __thread_self - TLS_INIT_TCB_SIZE \ + - TLS_PRE_TCB_SIZE)) + +/* Magic for libthread_db to know how to do THREAD_SELF. */ +# define DB_THREAD_SELF \ + CONST_THREAD_AREA (32, sizeof (struct pthread)) + +/* Access to data in the thread descriptor is easy. */ +#define THREAD_GETMEM(descr, member) \ + descr->member +#define THREAD_GETMEM_NC(descr, member, idx) \ + descr->member[idx] +#define THREAD_SETMEM(descr, member, value) \ + descr->member = (value) +#define THREAD_SETMEM_NC(descr, member, idx, value) \ + descr->member[idx] = (value) + +/* 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 */ + diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile new file mode 100644 index 000000000..2caba11b7 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile @@ -0,0 +1,9 @@ +# Makefile for uClibc-ng NPTL +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + +top_srcdir=../../../../../../../ +top_builddir=../../../../../../../ +all: objs +include $(top_builddir)Rules.mak +include Makefile.arch +include $(top_srcdir)Makerules diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile.arch new file mode 100644 index 000000000..94aa25ffb --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/Makefile.arch @@ -0,0 +1,9 @@ +# Makefile for uClibc-ng NPTL +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + +libpthread_linux_arch_SSRC = +libpthread_linux_arch_CSRC = pthread_once.c + +libc_linux_arch_CSRC = fork.c + +CFLAGS += $(SSP_ALL_CFLAGS) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h new file mode 100644 index 000000000..43440dc3c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/atomic.h @@ -0,0 +1,128 @@ +/* Copyright (C) 2010-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010. + + 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_ATOMIC_H +#define _BITS_ATOMIC_H 1 + +#include <stdint.h> + +/* This is needed to break a depencency loop, we do not need errno anyway */ +#ifndef _ERRNO_H +# define _ERRNO_H +# include <sysdep.h> +# undef _ERRNO_H +#else +# include <sysdep.h> +#endif + +/* Or1k has no atomic compare-and-exchange operation, but the + kernel provides userspace atomicity operations. Use them. */ + +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; + +/* TODO: Move these to a kernel header */ +#define OR1K_ATOMIC_SWAP 1 +#define OR1K_ATOMIC_CMPXCHG 2 +#define OR1K_ATOMIC_XCHG 3 +#define OR1K_ATOMIC_ADD 4 +#define OR1K_ATOMIC_DECPOS 5 +#define OR1K_ATOMIC_AND 6 +#define OR1K_ATOMIC_OR 7 +#define OR1K_ATOMIC_UMAX 8 +#define OR1K_ATOMIC_UMIN 9 + +#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ + ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ + INTERNAL_SYSCALL (or1k_atomic, , 4, \ + OR1K_ATOMIC_CMPXCHG, mem, oldval, newval) \ + : __atomic_error_bad_argument_size ())) + +#define atomic_exchange_acq(mem, newval) \ + ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ + INTERNAL_SYSCALL (or1k_atomic, , 3, \ + OR1K_ATOMIC_XCHG, mem, newval) \ + : __atomic_error_bad_argument_size ())) + +#define atomic_exchange_and_add_acq(mem, val) \ + ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ + INTERNAL_SYSCALL (or1k_atomic, , 3, \ + OR1K_ATOMIC_ADD, mem, val) \ + : __atomic_error_bad_argument_size ())) + +#define atomic_decrement_if_positive(mem) \ + ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ + INTERNAL_SYSCALL (or1k_atomic, , 2, \ + OR1K_ATOMIC_DECPOS, mem) \ + : __atomic_error_bad_argument_size ())) + +#define atomic_and_val(mem, mask) \ + ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ + INTERNAL_SYSCALL (or1k_atomic, , 3, \ + OR1K_ATOMIC_AND, mem, mask) \ + : __atomic_error_bad_argument_size ())) + +#define atomic_or_val(mem, mask) \ + ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ + INTERNAL_SYSCALL (or1k_atomic, , 3, \ + OR1K_ATOMIC_OR, mem, mask) \ + : __atomic_error_bad_argument_size ())) + +#define atomic_max_val(mem, val) \ + ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ + INTERNAL_SYSCALL (or1k_atomic, , 3, \ + OR1K_ATOMIC_UMAX, mem, val) \ + : __atomic_error_bad_argument_size ())) + +#define atomic_min_val(mem, val) \ + ((__typeof (*(mem))) ((sizeof (*(mem)) == 4) ? \ + INTERNAL_SYSCALL (or1k_atomic, , 3, \ + OR1K_ATOMIC_UMIN, mem, val) \ + : __atomic_error_bad_argument_size ())) + + +/* atomic_bit_test_set in terms of atomic_or_val. */ +#define atomic_bit_test_set(mem, bit) \ + ({ __typeof (*(mem)) __att0_mask = ((__typeof (*(mem))) 1 << (bit)); \ + atomic_or_val ((mem), __att0_mask) & __att0_mask; }) + +/* Various macros that should just be synonyms. */ +#define catomic_exchange_and_add atomic_exchange_and_add +#define atomic_and(mem, mask) ((void) atomic_and_val ((mem), (mask))) +#define catomic_and atomic_and +#define atomic_or(mem, mask) ((void) atomic_or_val ((mem), (mask))) +#define catomic_or atomic_or +#define atomic_max(mem, val) ((void)atomic_max_val ((mem), (val))) +#define catomic_max atomic_max +#define atomic_min(mem, val) ((void)atomic_min_val ((mem), (val))) +#define catomic_min atomic_min +/* + * This non-existent symbol is called for unsupporrted sizes, + * indicating a bug in the caller. + */ +extern int __atomic_error_bad_argument_size(void) + __attribute__ ((error ("bad sizeof atomic argument"))); + +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/pthreadtypes.h new file mode 100644 index 000000000..695a61fdd --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/pthreadtypes.h @@ -0,0 +1,177 @@ +/* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc. + + 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; + +union pthread_attr_t +{ + char __size[__SIZEOF_PTHREAD_ATTR_T]; + long int __align; +}; +#ifndef __have_pthread_attr_t +typedef union pthread_attr_t pthread_attr_t; +# define __have_pthread_attr_t 1 +#endif + + +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 char __flags; + unsigned char __shared; + unsigned char __pad1; + unsigned char __pad2; + 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 +/* Extra attributes for the cleanup functions. */ +/* + FIXME, check this after gcc uprgrade. + #define __cleanup_fct_attribute __attribute__ ((__regparm__ (1))) + warning: '__regparm__' attribute directive ignored +*/ + +#endif /* bits/pthreadtypes.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/semaphore.h new file mode 100644 index 000000000..3ed1424d7 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/bits/semaphore.h @@ -0,0 +1,34 @@ +/* Copyright (C) 2002, 2005, 2007 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 _SEMAPHORE_H +# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." +#endif + + +#define __SIZEOF_SEM_T 16 + + +/* Value returned if `sem_open' failed. */ +#define SEM_FAILED ((sem_t *) 0) + + +typedef union +{ + char __size[__SIZEOF_SEM_T]; + long int __align; +} sem_t; diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/createthread.c b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/createthread.c new file mode 100644 index 000000000..90838ddc5 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/createthread.c @@ -0,0 +1,23 @@ +/* Copyright (C) 2012 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; see the file COPYING.LIB. If + not, see <http://www.gnu.org/licenses/>. */ + +/* Value passed to 'clone' for initialization of the thread register. */ +#define TLS_VALUE (pd + 1) + + +/* Get the real implementation. */ +#include <sysdeps/pthread/createthread.c> diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/fork.c new file mode 100644 index 000000000..beb6cb0f7 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/fork.c @@ -0,0 +1,27 @@ +/* Copyright (C) 2005 Free Software Foundation, Inc. + Contributed by Phil Blundell <pb@nexus.co.uk>, 2005 + + 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 <sched.h> +#include <signal.h> +#include <sysdep.h> +#include <tls.h> + +#define ARCH_FORK() \ + INLINE_SYSCALL (clone, 5, \ + CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD, 0, \ + NULL, NULL, &THREAD_SELF->tid) + +#include "../fork.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/lowlevellock.h new file mode 100644 index 000000000..32b004486 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/lowlevellock.h @@ -0,0 +1,323 @@ +/* Copyright (C) 2005-2013 Free Software Foundation, Inc. + + 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 _LOWLEVELLOCK_H +#define _LOWLEVELLOCK_H 1 + +#include <time.h> +#include <sys/param.h> +#include <bits/pthreadtypes.h> +#include <atomic.h> +#include <sysdep.h> +#include <bits/kernel-features.h> + + +#define FUTEX_WAIT 0 +#define FUTEX_WAKE 1 +#define FUTEX_REQUEUE 3 +#define FUTEX_CMP_REQUEUE 4 +#define FUTEX_WAKE_OP 5 +#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1) +#define FUTEX_LOCK_PI 6 +#define FUTEX_UNLOCK_PI 7 +#define FUTEX_TRYLOCK_PI 8 +#define FUTEX_WAIT_BITSET 9 +#define FUTEX_WAKE_BITSET 10 +#define FUTEX_WAIT_REQUEUE_PI 11 +#define FUTEX_CMP_REQUEUE_PI 12 +#define FUTEX_PRIVATE_FLAG 128 +#define FUTEX_CLOCK_REALTIME 256 + +#define FUTEX_BITSET_MATCH_ANY 0xffffffff + +/* Values for 'private' parameter of locking macros. Yes, the + definition seems to be backwards. But it is not. The bit will be + reversed before passing to the system call. */ +#define LLL_PRIVATE 0 +#define LLL_SHARED FUTEX_PRIVATE_FLAG + + +#if !defined NOT_IN_libc || defined IS_IN_rtld +/* In libc.so or ld.so all futexes are private. */ +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + ((fl) | FUTEX_PRIVATE_FLAG) +# else +# define __lll_private_flag(fl, private) \ + ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) +# endif +#else +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + (((fl) | FUTEX_PRIVATE_FLAG) ^ (private)) +# else +# define __lll_private_flag(fl, private) \ + (__builtin_constant_p (private) \ + ? ((private) == 0 \ + ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \ + : (fl)) \ + : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG) \ + & THREAD_GETMEM (THREAD_SELF, header.private_futex)))) +# endif +#endif + + +#define lll_futex_wait(futexp, val, private) \ + lll_futex_timed_wait(futexp, val, NULL, private) + +#define lll_futex_timed_wait(futexp, val, timespec, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAIT, private), \ + (val), (timespec)); \ + __ret; \ + }) + +#define lll_futex_timed_wait_bitset(futexp, val, timespec, clockbit, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + int __op = FUTEX_WAIT_BITSET | clockbit; \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (__op, private), \ + (val), (timespec), NULL /* Unused. */, \ + FUTEX_BITSET_MATCH_ANY); \ + __ret; \ + }) + +#define lll_futex_wake(futexp, nr, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAKE, private), \ + (nr), 0); \ + __ret; \ + }) + +#define lll_robust_dead(futexv, private) \ + do \ + { \ + int *__futexp = &(futexv); \ + atomic_or (__futexp, FUTEX_OWNER_DIED); \ + lll_futex_wake (__futexp, 1, private); \ + } \ + while (0) + +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_CMP_REQUEUE, private),\ + (nr_wake), (nr_move), (mutex), (val)); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + + +/* Returns non-zero if error happened, zero if success. */ +#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_WAKE_OP, private), \ + (nr_wake), (nr_wake2), (futexp2), \ + FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + +/* Priority Inheritance support. */ +#define lll_futex_wait_requeue_pi(futexp, val, mutex, private) \ + lll_futex_timed_wait_requeue_pi (futexp, val, NULL, 0, mutex, private) + +#define lll_futex_timed_wait_requeue_pi(futexp, val, timespec, clockbit, \ + mutex, private) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + int __op = FUTEX_WAIT_REQUEUE_PI | clockbit; \ + \ + INTERNAL_SYSCALL (futex, __err, 5, (futexp), \ + __lll_private_flag (__op, private), \ + (val), (timespec), mutex); \ + }) + +#define lll_futex_cmp_requeue_pi(futexp, nr_wake, nr_move, mutex, val, priv) \ + ({ \ + INTERNAL_SYSCALL_DECL (__err); \ + long int __ret; \ + \ + __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \ + __lll_private_flag (FUTEX_CMP_REQUEUE_PI, priv),\ + (nr_wake), (nr_move), (mutex), (val)); \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err); \ + }) + + +#define lll_trylock(lock) \ + atomic_compare_and_exchange_val_acq(&(lock), 1, 0) + +#define lll_cond_trylock(lock) \ + atomic_compare_and_exchange_val_acq(&(lock), 2, 0) + +#define __lll_robust_trylock(futex, id) \ + (atomic_compare_and_exchange_val_acq (futex, id, 0) != 0) +#define lll_robust_trylock(lock, id) \ + __lll_robust_trylock (&(lock), id) + +extern void __lll_lock_wait_private (int *futex) attribute_hidden; +extern void __lll_lock_wait (int *futex, int private) attribute_hidden; +extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden; + +#define __lll_lock(futex, private) \ + ((void) ({ \ + int *__futex = (futex); \ + if (__builtin_expect (atomic_compare_and_exchange_val_acq (__futex, \ + 1, 0), 0)) \ + { \ + if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \ + __lll_lock_wait_private (__futex); \ + else \ + __lll_lock_wait (__futex, private); \ + } \ + })) +#define lll_lock(futex, private) __lll_lock (&(futex), private) + + +#define __lll_robust_lock(futex, id, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \ + 0), 0)) \ + __val = __lll_robust_lock_wait (__futex, private); \ + __val; \ + }) +#define lll_robust_lock(futex, id, private) \ + __lll_robust_lock (&(futex), id, private) + + +#define __lll_cond_lock(futex, private) \ + ((void) ({ \ + int *__futex = (futex); \ + if (__builtin_expect (atomic_exchange_acq (__futex, 2), 0)) \ + __lll_lock_wait (__futex, private); \ + })) +#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private) + + +#define lll_robust_cond_lock(futex, id, private) \ + __lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private) + + +extern int __lll_timedlock_wait (int *futex, const struct timespec *, + int private) attribute_hidden; +extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *, + int private) attribute_hidden; + +#define __lll_timedlock(futex, abstime, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (__builtin_expect (atomic_exchange_acq (__futex, 1), 0)) \ + __val = __lll_timedlock_wait (__futex, abstime, private); \ + __val; \ + }) +#define lll_timedlock(futex, abstime, private) \ + __lll_timedlock (&(futex), abstime, private) + + +#define __lll_robust_timedlock(futex, abstime, id, private) \ + ({ \ + int *__futex = (futex); \ + int __val = 0; \ + \ + if (__builtin_expect (atomic_compare_and_exchange_bool_acq (__futex, id, \ + 0), 0)) \ + __val = __lll_robust_timedlock_wait (__futex, abstime, private); \ + __val; \ + }) +#define lll_robust_timedlock(futex, abstime, id, private) \ + __lll_robust_timedlock (&(futex), abstime, id, private) + + +#define __lll_unlock(futex, private) \ + (void) \ + ({ int *__futex = (futex); \ + int __oldval = atomic_exchange_rel (__futex, 0); \ + if (__builtin_expect (__oldval > 1, 0)) \ + lll_futex_wake (__futex, 1, private); \ + lll_futex_wake (__futex, 1, private); \ + }) +#define lll_unlock(futex, private) __lll_unlock(&(futex), private) + + +#define __lll_robust_unlock(futex, private) \ + (void) \ + ({ int *__futex = (futex); \ + int __oldval = atomic_exchange_rel (__futex, 0); \ + if (__builtin_expect (__oldval & FUTEX_WAITERS, 0)) \ + lll_futex_wake (__futex, 1, private); \ + lll_futex_wake (__futex, 1, private); \ + }) +#define lll_robust_unlock(futex, private) \ + __lll_robust_unlock(&(futex), private) + + +#define lll_islocked(futex) \ + (futex != 0) + + +/* Our internal lock implementation is identical to the binary-compatible + mutex implementation. */ + +/* Initializers for lock. */ +#define LLL_LOCK_INITIALIZER (0) +#define LLL_LOCK_INITIALIZER_LOCKED (1) + +/* The states of a lock are: + 0 - untaken + 1 - taken by one user + >1 - taken by more users */ + +/* The kernel notifies a process which uses CLONE_CHILD_CLEARTID via futex + wakeup when the clone terminates. The memory location contains the + thread ID while the clone is running and is reset to zero + afterwards. */ +#define lll_wait_tid(tid) \ + do { \ + __typeof (tid) __tid; \ + while ((__tid = (tid)) != 0) \ + lll_futex_wait (&(tid), __tid, LLL_SHARED);\ + } while (0) + +extern int __lll_timedwait_tid (int *, const struct timespec *) + attribute_hidden; + +#define lll_timedwait_tid(tid, abstime) \ + ({ \ + int __res = 0; \ + if ((tid) != 0) \ + __res = __lll_timedwait_tid (&(tid), (abstime)); \ + __res; \ + }) + +#endif /* lowlevellock.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/pthread_once.c new file mode 100644 index 000000000..ce68ce68c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/pthread_once.c @@ -0,0 +1,92 @@ +/* Copyright (C) 2003-2013 Free Software Foundation, Inc. + Contributed by Jakub Jelinek <jakub@redhat.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" +#include <lowlevellock.h> + + +unsigned long int __fork_generation attribute_hidden; + + +static void +clear_once_control (void *arg) +{ + pthread_once_t *once_control = (pthread_once_t *) arg; + + *once_control = 0; + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); +} + + +int +__pthread_once (once_control, init_routine) + pthread_once_t *once_control; + void (*init_routine) (void); +{ + while (1) + { + int oldval, val, newval; + + val = *once_control; + do + { + /* Check if the initialized has already been done. */ + if ((val & 2) != 0) + return 0; + + oldval = val; + newval = (oldval & 3) | __fork_generation | 1; + val = atomic_compare_and_exchange_val_acq (once_control, newval, + oldval); + } + while (__builtin_expect (val != oldval, 0)); + + /* Check if another thread already runs the initializer. */ + if ((oldval & 1) != 0) + { + /* Check whether the initializer execution was interrupted + by a fork. */ + if (((oldval ^ newval) & -4) == 0) + { + /* Same generation, some other thread was faster. Wait. */ + lll_futex_wait (once_control, newval, LLL_PRIVATE); + continue; + } + } + + /* This thread is the first here. Do the initialization. + Register a cleanup handler so that in case the thread gets + interrupted the initialization can be restarted. */ + pthread_cleanup_push (clear_once_control, once_control); + + init_routine (); + + pthread_cleanup_pop (0); + + + /* Add one to *once_control. */ + atomic_increment (once_control); + + /* Wake up all other threads. */ + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); + break; + } + + return 0; +} +weak_alias (__pthread_once, pthread_once) +strong_alias (__pthread_once, __pthread_once_internal) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/sysdep-cancel.h new file mode 100644 index 000000000..286fa0cce --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/or1k/sysdep-cancel.h @@ -0,0 +1,116 @@ +/* Copyright (C) 2014 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 <sysdep.h> +#include <tls.h> +#ifndef __ASSEMBLER__ +# include <pthreadP.h> +#endif + +#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt + +# undef PSEUDO +# define PSEUDO(name, syscall_name, args) \ +ENTRY(__##syscall_name##_nocancel); \ +L(pseudo_nocancel): \ + DO_CALL(syscall_name); \ + l.j L(pseudo_finish); \ + l.nop; \ +END(__##syscall_name##_nocancel); \ +ENTRY(name); \ + SINGLE_THREAD_P(r13); \ + l.sfeq r13,r0; \ + l.bnf L(pseudo_nocancel); \ + l.nop; \ + /* Reserve the same amount of stack space, effectivly disregarding \ + * how many args we're supposed to push. This makes the code easier. */ \ + l.addi r1,r1,-28; \ + cfi_adjust_cfa_offset(28); \ + PUSHARGS_##args; /* CENABLE is a function call, save args for syscall. */ \ + CENABLE; \ + l.sw 24(r1),r11; \ + POPARGS_##args; \ + DO_CALL(syscall_name); \ + l.lwz r3,24(r1); /* pass return value from CENABLE to CDISABLE. */ \ + l.sw 24(r1),r11; /* save syscall return value for after CDISABLE. */ \ + CDISABLE; \ + l.lwz r11,24(r1); /* restore syscall return value. */ \ + cfi_adjust_cfa_offset(-28); \ + l.addi r1,r1,28; \ +L(pseudo_finish): \ + /* if -4096 < ret < 0 holds, it's an error */ \ + l.sfgeui r11,0xf001; \ + l.bf L(pseudo_end); \ + l.nop + +# undef PSEUDO_END +# define PSEUDO_END(name) \ +L(pseudo_end): \ + l.j SYSCALL_ERROR_NAME; \ + l.ori r3,r11,0; \ + END(name) + +# define PUSHARGS_0 /* nothing to do */ +# define PUSHARGS_1 PUSHARGS_0 l.sw 0(r1),r3; +# define PUSHARGS_2 PUSHARGS_1 l.sw 4(r1),r4; +# define PUSHARGS_3 PUSHARGS_2 l.sw 8(r1),r5; +# define PUSHARGS_4 PUSHARGS_3 l.sw 12(r1),r6; +# define PUSHARGS_5 PUSHARGS_4 l.sw 16(r1),r7; +# define PUSHARGS_6 PUSHARGS_5 l.sw 20(r1),r8; + +# define POPARGS_0 /* nothing to do */ +# define POPARGS_1 POPARGS_0 l.lwz r3,0(r1); +# define POPARGS_2 POPARGS_1 l.lwz r4,4(r1); +# define POPARGS_3 POPARGS_2 l.lwz r5,8(r1); +# define POPARGS_4 POPARGS_3 l.lwz r6,12(r1); +# define POPARGS_5 POPARGS_4 l.lwz r7,16(r1); +# define POPARGS_6 POPARGS_5 l.lwz r8,20(r1); + +# define PSEUDO_JMP(sym) l.jal sym; l.nop; + +# ifdef IS_IN_libpthread +# define CENABLE PSEUDO_JMP (__pthread_enable_asynccancel) +# define CDISABLE PSEUDO_JMP (__pthread_disable_asynccancel) +# elif defined IS_IN_librt +# define CENABLE PSEUDO_JMP (__librt_enable_asynccancel) +# define CDISABLE PSEUDO_JMP (__librt_disable_asynccancel) +# else +# define CENABLE PSEUDO_JMP (__libc_enable_asynccancel) +# define CDISABLE PSEUDO_JMP (__libc_disable_asynccancel) +# endif + +# ifndef __ASSEMBLER__ +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +# else +/* It's not super nice to have "r10" hardcoded here */ +# define SINGLE_THREAD_P(reg) l.lwz reg, MULTIPLE_THREADS_OFFSET(r10) +#endif + +#elif !defined __ASSEMBLER__ + +# define SINGLE_THREAD_P 1 +# define NO_CANCELLATION 1 + +#endif + +#ifndef __ASSEMBLER__ +# define RTLD_SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +#endif |