diff options
Diffstat (limited to 'libpthread/nptl/sysdeps')
18 files changed, 949 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/csky/Makefile b/libpthread/nptl/sysdeps/csky/Makefile new file mode 100644 index 000000000..43dc60a42 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/Makefile @@ -0,0 +1,6 @@ +top_srcdir=../../../../ +top_builddir=../../../../ +all: objs +include $(top_builddir)Rules.mak +include Makefile.arch +include $(top_srcdir)Makerules diff --git a/libpthread/nptl/sysdeps/csky/Makefile.arch b/libpthread/nptl/sysdeps/csky/Makefile.arch new file mode 100644 index 000000000..0e0a5e6d4 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/Makefile.arch @@ -0,0 +1,7 @@ +CFLAGS-pt-raise.c = -DNOT_IN_libc -DIS_IN_libpthread + +ASFLAGS-pthread_spin_lock.S = -DNOT_IN_libc -DIS_IN_libpthread +ASFLAGS-pthread_spin_trylock.S = -DNOT_IN_libc -DIS_IN_libpthread + +libc_arch_a_CSRC = libc-tls.c + diff --git a/libpthread/nptl/sysdeps/csky/dl-tls.h b/libpthread/nptl/sysdeps/csky/dl-tls.h new file mode 100644 index 000000000..70f7e9681 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/dl-tls.h @@ -0,0 +1,9 @@ +/* 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/csky/libc-tls.c b/libpthread/nptl/sysdeps/csky/libc-tls.c new file mode 100644 index 000000000..ceb61f848 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/libc-tls.c @@ -0,0 +1,18 @@ +#include <sysdeps/generic/libc-tls.c> +#include <dl-tls.h> + +#if defined(USE_TLS) && USE_TLS + +/* On CSKY, 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/csky/pthread_spin_lock.S b/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S new file mode 100644 index 000000000..da6e234eb --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/pthread_spin_lock.S @@ -0,0 +1,18 @@ +#include <sysdep.h> + + .text + .align 4 + +ENTRY (pthread_spin_lock) + mov a2, a0 +1: + movi a0, 0 + movi a1, 1 + trap 2 // trap 2 use to cmpxchg + cmpnei a0, 0 + bt 1b + movi a0, 0 + jmp r15 + + /* TODO */ +END (pthread_spin_lock) diff --git a/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S new file mode 100644 index 000000000..113e94d51 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/pthread_spin_trylock.S @@ -0,0 +1,16 @@ +#define _ERRNO_H 1 +#include <bits/errno.h> +#include <sysdep.h> + +.text +ENTRY (pthread_spin_trylock) + mov a2, a0 + movi a0, 0 + movi a1, 1 + trap 2 // trap 2 use to cmpxchg + cmpnei a0, 0 + bf 1f + movi a0, EBUSY +1: + jmp r15 +END (pthread_spin_trylock) diff --git a/libpthread/nptl/sysdeps/csky/pthreaddef.h b/libpthread/nptl/sysdeps/csky/pthreaddef.h new file mode 100644 index 000000000..da6a0fac8 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/pthreaddef.h @@ -0,0 +1,19 @@ +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. SSE requires 16 + bytes. */ +#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/csky/tcb-offsets.sym b/libpthread/nptl/sysdeps/csky/tcb-offsets.sym new file mode 100644 index 000000000..bf9c0a1c1 --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/tcb-offsets.sym @@ -0,0 +1,10 @@ +#include <sysdep.h> +#include <tls.h> + +-- + +-- Derive offsets relative to the thread register. +#define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - sizeof(struct pthread)) + +MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads) +TID_OFFSET thread_offsetof (tid) diff --git a/libpthread/nptl/sysdeps/csky/tls.h b/libpthread/nptl/sysdeps/csky/tls.h new file mode 100644 index 000000000..721551c8d --- /dev/null +++ b/libpthread/nptl/sysdeps/csky/tls.h @@ -0,0 +1,170 @@ +#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; + +#ifdef __CSKYABIV2__ +/* define r31 as thread pointer register? */ +# define READ_THREAD_POINTER() \ + ({ void *__result; \ + __asm__ __volatile__ ("mov %0, r31" \ + : "=r" (__result)); \ + __result; }) +#else +# define READ_THREAD_POINTER() \ + ({ register unsigned int __result __asm__("a0"); \ + __asm__ __volatile__ ("trap 3;" \ + : "=r" (__result) : : ); \ + __result; }) +#endif + +#else /* __ASSEMBLER__ */ +# include <tcb-offsets.h> +# ifdef __CSKYABIV2__ +/* define r31 as thread pointer register? */ +# define READ_THREAD_POINTER() \ + mov r0, r31; +# else +# define READ_THREAD_POINTER() \ + trap 3; +# endif +#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; + void *private; +} tcbhead_t; + +/* 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 16 + +/* This is the size of the TCB. */ +# define TLS_TCB_SIZE sizeof (tcbhead_t) + +/* Alignment requirements for the TCB. */ +# define TLS_TCB_ALIGN 16 + +/* This is the size we need before TCB. */ +# define TLS_PRE_TCB_SIZE sizeof (struct pthread) + +/* The thread pointer (in hardware register $29) points to the end of + the TCB + 0x7000, as for PowerPC. The pthread_descr structure is + immediately in front of the TCB. */ +# define TLS_TCB_OFFSET 0//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))->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. 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, secondcall) \ + ({ INTERNAL_SYSCALL_DECL (err); \ + long result_var; \ + result_var = INTERNAL_SYSCALL (set_thread_area, err, 1, \ + (char *) (tcbp) + TLS_TCB_OFFSET); \ + INTERNAL_SYSCALL_ERROR_P (result_var, err) \ + ? "unknown error" : NULL; }) + +/* Return the address of the dtv for the current thread. */ +# define THREAD_DTV() \ + (((tcbhead_t *) (READ_THREAD_POINTER () - TLS_TCB_OFFSET))->dtv) + +/* Return the thread descriptor for the current thread. */ +# undef THREAD_SELF +# define THREAD_SELF \ + ((struct pthread *) (READ_THREAD_POINTER () \ + - TLS_TCB_OFFSET - 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) + +/* Initializing the thread pointer will generate a SIGILL if the syscall + is not available. */ +#define TLS_INIT_TP_EXPENSIVE 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 */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile new file mode 100644 index 000000000..8679a8456 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile @@ -0,0 +1,6 @@ +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/csky/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile.arch new file mode 100644 index 000000000..6c85eda4f --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/Makefile.arch @@ -0,0 +1,4 @@ +libpthread_linux_arch_SSRC = +libpthread_linux_arch_CSRC = pthread_once.c + +libc_linux_arch_CSRC = fork.c diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/pthreadtypes.h new file mode 100644 index 000000000..e1b115c8c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/pthreadtypes.h @@ -0,0 +1,181 @@ +/* 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 + +#include <endian.h> + +#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; +#if __BYTE_ORDER == __BIG_ENDIAN + unsigned char __pad1; + unsigned char __pad2; + unsigned char __shared; + /* FLAGS must stay at this position in the structure to maintain + binary compatibility. */ + unsigned char __flags; +#else + /* 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; +#endif + 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/csky/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/semaphore.h new file mode 100644 index 000000000..dadfac2af --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/bits/semaphore.h @@ -0,0 +1,35 @@ +/* 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#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/csky/createthread.c b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/createthread.c new file mode 100644 index 000000000..bad8b0578 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/createthread.c @@ -0,0 +1,5 @@ +/* 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/csky/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/fork.c new file mode 100644 index 000000000..41776f9bc --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/fork.c @@ -0,0 +1,31 @@ +/* Copyright (C) 2005 Free Software Foundation, Inc. + This file is part of the GNU C Library. + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#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, \ + NULL, NULL, &THREAD_SELF->tid, NULL) + +#include "../fork.c" diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/lowlevellock.h new file mode 100644 index 000000000..0a5650318 --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/lowlevellock.h @@ -0,0 +1,281 @@ +/* Copyright (C) 2005, 2006, 2007, 2008, 2009 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 _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_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_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); \ + }) + + +#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); \ + }) +#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); \ + }) +#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_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/csky/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/pthread_once.c new file mode 100644 index 000000000..e977a7d0c --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/pthread_once.c @@ -0,0 +1,100 @@ +/* Copyright (C) 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 "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 +attribute_protected +__pthread_once (pthread_once_t *once_control, void (*init_routine) (void)) +{ + for (;;) + { + int oldval; + int newval; + + /* Pseudo code: + newval = __fork_generation | 1; + oldval = *once_control; + if ((oldval & 2) == 0) + *once_control = newval; + Do this atomically. + */ + do + { + newval = __fork_generation | 1; + oldval = *once_control; + if (oldval & 2) + break; + } while (atomic_compare_and_exchange_val_acq (once_control, newval, oldval) != oldval); + + /* Check if the initializer has already been done. */ + if ((oldval & 2) != 0) + return 0; + + /* Check if another thread already runs the initializer. */ + if ((oldval & 1) == 0) + break; + + /* Check whether the initializer execution was interrupted by a fork. */ + if (oldval != newval) + break; + + /* Same generation, some other thread was faster. Wait. */ + lll_futex_wait (once_control, oldval, LLL_PRIVATE); + } + + /* 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); + + /* Say that the initialisation is done. */ + *once_control = __fork_generation | 2; + + /* Wake up all other threads. */ + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); + + return 0; +} +weak_alias (__pthread_once, pthread_once) +strong_alias (__pthread_once, __pthread_once_internal) + +#if defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__PIC__) +/* When statically linked, if pthread_create is used, this file + will be brought in. The exception handling code in GCC assumes + that if pthread_create is available, so are these. */ +const void *include_pthread_getspecific attribute_hidden = pthread_getspecific; +const void *include_pthread_setspecific attribute_hidden = pthread_setspecific; +const void *include_pthread_key_create attribute_hidden = pthread_key_create; +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/csky/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/sysdep-cancel.h new file mode 100644 index 000000000..34c43b06d --- /dev/null +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/csky/sysdep-cancel.h @@ -0,0 +1,33 @@ +#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 + +# ifdef 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 +# define SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +# endif + +#else + +# 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) |