diff options
Diffstat (limited to 'libpthread/nptl')
18 files changed, 895 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/kvx/Makefile.arch b/libpthread/nptl/sysdeps/kvx/Makefile.arch new file mode 100644 index 000000000..b2ad58197 --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/Makefile.arch @@ -0,0 +1,9 @@ +# Makefile for uClibc NPTL +# +# Copyright (C) 2019 Kalray +# +# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. +# + +libc_arch_a_CSRC = unwind-forcedunwind.c libc-tls.c +CFLAGS-unwind-forcedunwind.c = -fexceptions -fasynchronous-unwind-tables diff --git a/libpthread/nptl/sysdeps/kvx/dl-tls.h b/libpthread/nptl/sysdeps/kvx/dl-tls.h new file mode 100644 index 000000000..61b810db6 --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/dl-tls.h @@ -0,0 +1,47 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2019 Kalray Inc. + */ + +#ifndef _KVX_DL_TLS_H +#define _KVX_DL_TLS_H 1 + +/* Type used to represent a TLS descriptor in the GOT. */ +struct tlsdesc +{ + ptrdiff_t (*entry) (struct tlsdesc *); + void *arg; +}; + +typedef struct dl_tls_index +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + +/* Type used as the argument in a TLS descriptor for a symbol that + needs dynamic TLS offsets. */ +struct tlsdesc_dynamic_arg +{ + tls_index tlsinfo; + size_t gen_count; +}; + +extern ptrdiff_t attribute_hidden +_dl_tlsdesc_return (struct tlsdesc *); + +# ifdef SHARED +extern void *_dl_make_tlsdesc_dynamic (struct link_map *, size_t); + +extern ptrdiff_t attribute_hidden +_dl_tlsdesc_dynamic (struct tlsdesc *); +# endif + +extern void *__tls_get_addr (tls_index *ti); + +#define TLS_DTV_UNALLOCATED ((void *) -1l) + +#endif diff --git a/libpthread/nptl/sysdeps/kvx/libc-tls.c b/libpthread/nptl/sysdeps/kvx/libc-tls.c new file mode 100644 index 000000000..5fd9e7e70 --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/libc-tls.c @@ -0,0 +1,26 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2020 Kalray Inc. + */ + +#include <sysdeps/generic/libc-tls.c> +#include <dl-tls.h> + +#if defined(USE_TLS) && USE_TLS + +/* On kvx, 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. */ + +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/kvx/pthread_spin_lock.c b/libpthread/nptl/sysdeps/kvx/pthread_spin_lock.c new file mode 100644 index 000000000..6f77c6250 --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/pthread_spin_lock.c @@ -0,0 +1,60 @@ +/* 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/kvx/pthread_spin_trylock.c b/libpthread/nptl/sysdeps/kvx/pthread_spin_trylock.c new file mode 100644 index 000000000..4e9aa64d3 --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/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/kvx/pthreaddef.h b/libpthread/nptl/sysdeps/kvx/pthreaddef.h new file mode 100644 index 000000000..6e1485998 --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/pthreaddef.h @@ -0,0 +1,26 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2019 Kalray Inc. + */ + +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. */ +#define STACK_ALIGN 32 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 32 + +/* 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/kvx/tcb-offsets.sym b/libpthread/nptl/sysdeps/kvx/tcb-offsets.sym new file mode 100644 index 000000000..238647dd4 --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/tcb-offsets.sym @@ -0,0 +1,6 @@ +#include <sysdep.h> +#include <tls.h> + +PTHREAD_MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) +PTHREAD_TID_OFFSET offsetof (struct pthread, tid) +PTHREAD_SIZEOF sizeof (struct pthread) diff --git a/libpthread/nptl/sysdeps/kvx/tls.h b/libpthread/nptl/sysdeps/kvx/tls.h new file mode 100644 index 000000000..a3e7fa97b --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/tls.h @@ -0,0 +1,160 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2019 Kalray Inc. + */ + +#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; + +#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 thread blocks. */ +# define TLS_DTV_AT_TP 1 + +/* Get the thread descriptor definition. */ +# include <../../descr.h> + +typedef struct +{ + dtv_t *dtv; +} tcbhead_t; + +/* Thread Pointer $tp is $r13 */ +register tcbhead_t *__thread_self __asm__("$r13"); + +/* 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) + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE sizeof (struct pthread) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN __alignof__ (tcbhead_t) + +/* 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) \ + (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 (64, 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/kvx/unwind-forcedunwind.c b/libpthread/nptl/sysdeps/kvx/unwind-forcedunwind.c new file mode 100644 index 000000000..b9618dead --- /dev/null +++ b/libpthread/nptl/sysdeps/kvx/unwind-forcedunwind.c @@ -0,0 +1,165 @@ +/* Copyright (C) 2003, 2005, 2006, 2009 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>. + + 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/>. */ + +#include <dlfcn.h> +#include <stdio.h> +#include <unwind.h> +#include <pthreadP.h> +#include <sysdep.h> +#include <libgcc_s.h> +#include <unwind-resume.h> + +#define __libc_dlopen(x) dlopen(x, (RTLD_LOCAL | RTLD_LAZY)) +#define __libc_dlsym dlsym +#define __libc_dlclose dlclose + +static void *libgcc_s_handle; +void (*__libgcc_s_resume) (struct _Unwind_Exception *exc) + attribute_hidden __attribute__ ((noreturn)); +static _Unwind_Reason_Code (*libgcc_s_personality) PERSONALITY_PROTO; +static _Unwind_Reason_Code (*libgcc_s_forcedunwind) + (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *); +static _Unwind_Word (*libgcc_s_getcfa) (struct _Unwind_Context *); +static void (*libgcc_s_sjlj_register) (struct SjLj_Function_Context *); +static void (*libgcc_s_sjlj_unregister) (struct SjLj_Function_Context *); + +void +__attribute_noinline__ +pthread_cancel_init (void) +{ + void *resume; + void *personality; + void *forcedunwind; + void *getcfa; + void *handle; + void *sjlj_register, *sjlj_unregister; + + if (__builtin_expect (libgcc_s_handle != NULL, 1)) + { + /* Force gcc to reload all values. */ + __asm__ __volatile__ ("" ::: "memory"); + return; + } + + handle = __libc_dlopen (LIBGCC_S_SO); + + resume = __libc_dlsym (handle, "_Unwind_SjLj_Resume"); + personality = __libc_dlsym (handle, "__gcc_personality_sj0"); + forcedunwind = __libc_dlsym (handle, "_Unwind_SjLj_ForcedUnwind"); + getcfa = __libc_dlsym (handle, "_Unwind_GetCFA"); + sjlj_register = __libc_dlsym (handle, "_Unwind_SjLj_Register"); + sjlj_unregister = __libc_dlsym (handle, "_Unwind_SjLj_Unregister"); + + if ((handle == NULL) + || (resume == NULL) + || (personality == NULL) + || (forcedunwind == NULL) + || (getcfa == NULL) + || (sjlj_register == NULL) + || (sjlj_unregister == NULL) +#ifdef ARCH_CANCEL_INIT + || ARCH_CANCEL_INIT (handle) +#endif + ) + { + fprintf (stderr, + LIBGCC_S_SO " must be installed for pthread_cancel to work\n"); + abort(); + } + + __libgcc_s_resume = resume; + libgcc_s_personality = personality; + libgcc_s_forcedunwind = forcedunwind; + libgcc_s_sjlj_register = sjlj_register; + libgcc_s_sjlj_unregister = sjlj_unregister; + libgcc_s_getcfa = getcfa; + /* Make sure libgcc_s_handle is written last. Otherwise, + pthread_cancel_init might return early even when the pointer the + caller is interested in is not initialized yet. */ + atomic_write_barrier (); + libgcc_s_handle = handle; +} + +void +__libc_freeres_fn_section +__unwind_freeres (void) +{ + void *handle = libgcc_s_handle; + if (handle != NULL) + { + libgcc_s_handle = NULL; + __libc_dlclose (handle); + } +} + +#if !HAVE_ARCH_UNWIND_RESUME +void attribute_hidden +_Unwind_Resume (struct _Unwind_Exception *exc) +{ + if (__builtin_expect (libgcc_s_handle == NULL, 0)) + pthread_cancel_init (); + + __libgcc_s_resume(exc); +} +#endif + +_Unwind_Reason_Code attribute_hidden +__gcc_personality_v0 PERSONALITY_PROTO +{ + if (__builtin_expect (libgcc_s_handle == NULL, 0)) + pthread_cancel_init (); + + return libgcc_s_personality PERSONALITY_ARGS; +} + +_Unwind_Reason_Code attribute_hidden +_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop, + void *stop_argument) +{ + if (__builtin_expect (libgcc_s_handle == NULL, 0)) + pthread_cancel_init (); + + return libgcc_s_forcedunwind (exc, stop, stop_argument); +} + +_Unwind_Word attribute_hidden +_Unwind_GetCFA (struct _Unwind_Context *context) +{ + if (__builtin_expect (libgcc_s_handle == NULL, 0)) + pthread_cancel_init (); + + return libgcc_s_getcfa (context); +} + +void +_Unwind_SjLj_Register (struct SjLj_Function_Context *fc) +{ + if (__builtin_expect (libgcc_s_sjlj_register == NULL, 0)) + pthread_cancel_init (); + + libgcc_s_sjlj_register (fc); +} + +void +_Unwind_SjLj_Unregister (struct SjLj_Function_Context *fc) +{ + if (__builtin_expect (libgcc_s_sjlj_unregister == NULL, 0)) + pthread_cancel_init (); + + libgcc_s_sjlj_unregister (fc); +} diff --git a/libpthread/nptl/sysdeps/pthread/Makefile.in b/libpthread/nptl/sysdeps/pthread/Makefile.in index 6c09e7b7e..70546bc0e 100644 --- a/libpthread/nptl/sysdeps/pthread/Makefile.in +++ b/libpthread/nptl/sysdeps/pthread/Makefile.in @@ -44,7 +44,9 @@ CFLAGS-unwind-forcedunwind.c = -fexceptions -fasynchronous-unwind-tables CFLAGS-OMIT-librt-cancellation.c = -DIS_IN_libpthread CFLAGS-librt-cancellation.c = -DIS_IN_librt \ -fexceptions -fasynchronous-unwind-tables +ifneq ($(TARGET_ARCH),kvx) libpthread-so-y += $(patsubst %,$(libpthread_pthread_OUT)/%.oS, unwind-forcedunwind) +endif librt-pt-routines-y = librt-cancellation.c diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/Makefile new file mode 100644 index 000000000..0d6f2f45d --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/Makefile @@ -0,0 +1,13 @@ +# Makefile for uClibc NPTL +# +# Copyright (C) 2019 Kalray +# +# 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/kvx/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/Makefile.arch new file mode 100644 index 000000000..8af56320c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/Makefile.arch @@ -0,0 +1,14 @@ +# Makefile for uClibc NPTL +# +# Copyright (C) 2019 Kalray +# +# 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/kvx/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/bits/pthreadtypes.h new file mode 100644 index 000000000..e1bfe51cf --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/bits/pthreadtypes.h @@ -0,0 +1,166 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2019 Kalray Inc. + */ + +#ifndef _BITS_PTHREADTYPES_H +#define _BITS_PTHREADTYPES_H 1 + +#include <endian.h> + +#define __SIZEOF_PTHREAD_ATTR_T 64 +#define __SIZEOF_PTHREAD_MUTEX_T 48 +#define __SIZEOF_PTHREAD_MUTEXATTR_T 8 +#define __SIZEOF_PTHREAD_COND_T 72 +#define __SIZEOF_PTHREAD_COND_COMPAT_T 48 +#define __SIZEOF_PTHREAD_CONDATTR_T 8 +#define __SIZEOF_PTHREAD_RWLOCK_T 80 +#define __SIZEOF_PTHREAD_RWLOCKATTR_T 16 +#define __SIZEOF_PTHREAD_BARRIER_T 32 +#define __SIZEOF_PTHREAD_BARRIERATTR_T 16 + +#define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1 + +/* 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_t1 +#endif + +typedef struct __pthread_internal_list +{ + struct __pthread_internal_list *__prev; + struct __pthread_internal_list *__next; +} __pthread_list_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; + unsigned int __nusers; + /* KIND must stay at this position in the structure to maintain + binary compatibility with static initializers. */ + int __kind; + int __spins; + __pthread_list_t __list; +#define __PTHREAD_MUTEX_HAVE_PREV 1 + } __data; + char __size[__SIZEOF_PTHREAD_MUTEX_T]; + long int __align; +} pthread_mutex_t; + +/* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER. */ +#define __PTHREAD_SPINS 0 + +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]; + 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; + int __writer; + int __shared; + unsigned long int __pad1; + unsigned long int __pad2; + unsigned int __flags; + } __data; + char __size[__SIZEOF_PTHREAD_RWLOCK_T]; + long int __align; +} pthread_rwlock_t; + +#define __PTHREAD_RWLOCK_ELISION_EXTRA 0 + +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/kvx/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/bits/semaphore.h new file mode 100644 index 000000000..0acafdbb0 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/bits/semaphore.h @@ -0,0 +1,30 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2019 Kalray Inc. + */ + +#ifndef _SEMAPHORE_H +# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead." +#endif + +#include <bits/wordsize.h> + +#if __WORDSIZE == 64 +# define __SIZEOF_SEM_T 32 +#else +# define __SIZEOF_SEM_T 16 +#endif + + +/* 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/kvx/createthread.c b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/createthread.c new file mode 100644 index 000000000..1b82c9190 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/createthread.c @@ -0,0 +1,14 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2019 Kalray Inc. + */ + +/* Value passed to 'clone' for initialization of the thread register. */ +#define TLS_VALUE ((void *) (pd) \ + + TLS_PRE_TCB_SIZE + TLS_INIT_TCB_SIZE) + +/* Get the real implementation. */ +#include <sysdeps/pthread/createthread.c> diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/fork.c new file mode 100644 index 000000000..4f7044a0b --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/fork.c @@ -0,0 +1,11 @@ +#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, &THREAD_SELF->tid, NULL) + +#include "../fork.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/pthread_once.c new file mode 100644 index 000000000..0d2749edf --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/pthread_once.c @@ -0,0 +1,77 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2019 Kalray Inc. + */ + +#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/kvx/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/sysdep-cancel.h new file mode 100644 index 000000000..09f538fc2 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/kvx/sysdep-cancel.h @@ -0,0 +1,43 @@ +/* + * This file is subject to the terms and conditions of the LGPV V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2019 Kalray Inc. + */ + +#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 + +# if defined IS_IN_libpthread +# define __local_multiple_threads __pthread_multiple_threads +# elif !defined NOT_IN_libc +# define __local_multiple_threads __libc_multiple_threads +# endif + +# if defined IS_IN_libpthread || !defined NOT_IN_libc +extern int __local_multiple_threads attribute_hidden; +# define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1) +# else +/* There is no __local_multiple_threads for librt, so use the TCB. */ +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +# endif + +#else + +/* For rtld, et cetera. */ +# define SINGLE_THREAD_P 1 +# define NO_CANCELLATION 1 + +#endif + +# define RTLD_SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) |