diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/alpha')
8 files changed, 193 insertions, 123 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/Versions b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/Versions deleted file mode 100644 index 437c4da28..000000000 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/Versions +++ /dev/null @@ -1,13 +0,0 @@ -libpthread { - GLIBC_2.3.3 { - # Changed PTHREAD_STACK_MIN. - pthread_attr_setstack; pthread_attr_setstacksize; - } -} -librt { - GLIBC_2.3.3 { - # Changed timer_t. - timer_create; timer_delete; timer_getoverrun; timer_gettime; - timer_settime; - } -} diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/local_lim.h b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/local_lim.h index e0718780c..a7c9740a0 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/local_lim.h +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/local_lim.h @@ -1,5 +1,5 @@ /* Minimum guaranteed maximum values for system limits. Linux/Alpha version. - Copyright (C) 1993-1998,2000,2002,2003,2004 Free Software Foundation, Inc. + Copyright (C) 1993-1998,2000,2002-2004,2008 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 @@ -31,6 +31,9 @@ #ifndef OPEN_MAX # define __undef_OPEN_MAX #endif +#ifndef ARG_MAX +# define __undef_ARG_MAX +#endif /* The kernel sources contain a file with all the needed information. */ #include <linux/limits.h> @@ -50,6 +53,11 @@ # undef OPEN_MAX # undef __undef_OPEN_MAX #endif +/* Have to remove ARG_MAX? */ +#ifdef __undef_ARG_MAX +# undef ARG_MAX +# undef __undef_ARG_MAX +#endif /* The number of data keys per process. */ #define _POSIX_THREAD_KEYS_MAX 128 @@ -87,3 +95,6 @@ /* Maximum message queue priority level. */ #define MQ_PRIO_MAX 32768 + +/* Maximum value the semaphore can have. */ +#define SEM_VALUE_MAX (2147483647) diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h index 0f3bf838e..41c0be197 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h @@ -1,5 +1,5 @@ /* Machine-specific pthread type layouts. Alpha version. - Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. + Copyright (C) 2003, 2004, 2005, 2006, 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 @@ -65,7 +65,7 @@ typedef union int __kind; int __spins; __pthread_list_t __list; -#define __PTHREAD_MUTEX_HAVE_PREV 1 +#define __PTHREAD_MUTEX_HAVE_PREV 1 } __data; char __size[__SIZEOF_PTHREAD_MUTEX_T]; long int __align; @@ -126,9 +126,9 @@ typedef union unsigned int __nr_readers_queued; unsigned int __nr_writers_queued; int __writer; - int __pad1; + int __shared; + unsigned long int __pad1; unsigned long int __pad2; - unsigned long int __pad3; /* FLAGS must stay at this position in the structure to maintain binary compatibility. */ unsigned int __flags; diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/semaphore.h index 6dadfda20..be4469c69 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/semaphore.h +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/bits/semaphore.h @@ -26,9 +26,6 @@ /* Value returned if `sem_open' failed. */ #define SEM_FAILED ((sem_t *) 0) -/* Maximum value the semaphore can have. */ -#define SEM_VALUE_MAX (2147483647) - typedef union { diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h index fd4a7ca4b..b7f4de338 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/lowlevellock.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2003, 2004, 2006, 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 @@ -24,161 +24,250 @@ #include <bits/pthreadtypes.h> #include <atomic.h> #include <sysdep.h> +#include <bits/kernel-features.h> -#define __NR_futex 394 #define FUTEX_WAIT 0 #define FUTEX_WAKE 1 #define FUTEX_REQUEUE 3 #define FUTEX_CMP_REQUEUE 4 - -/* Initializer for compatibility lock. */ -#define LLL_MUTEX_LOCK_INITIALIZER (0) - -#define lll_futex_wait(futexp, val) \ +#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), FUTEX_WAIT, (val), 0); \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAIT, private), \ + (val), (timespec)); \ INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret : __ret; \ }) -#define lll_futex_timed_wait(futexp, val, timespec) \ +#define lll_futex_wake(futexp, nr, private) \ ({ \ INTERNAL_SYSCALL_DECL (__err); \ long int __ret; \ - __ret = INTERNAL_SYSCALL (futex, __err, 4, \ - (futexp), FUTEX_WAIT, (val), (timespec)); \ + __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \ + __lll_private_flag (FUTEX_WAKE, private), \ + (nr), 0); \ INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret : __ret; \ }) -#define lll_futex_wake(futexp, nr) \ +#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, 4, \ - (futexp), FUTEX_WAKE, (nr), 0); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret : __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_requeue(futexp, nr_wake, nr_move, mutex, val) \ +#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), FUTEX_CMP_REQUEUE, (nr_wake), \ - (nr_move), (mutex), (val)); \ + __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); \ }) + + static inline int __attribute__((always_inline)) -__lll_mutex_trylock(int *futex) +__lll_trylock(int *futex) { return atomic_compare_and_exchange_val_acq (futex, 1, 0) != 0; } -#define lll_mutex_trylock(lock) __lll_mutex_trylock (&(lock)) +#define lll_trylock(lock) __lll_trylock (&(lock)) static inline int __attribute__((always_inline)) -__lll_mutex_cond_trylock(int *futex) +__lll_cond_trylock(int *futex) { return atomic_compare_and_exchange_val_acq (futex, 2, 0) != 0; } -#define lll_mutex_cond_trylock(lock) __lll_mutex_cond_trylock (&(lock)) +#define lll_cond_trylock(lock) __lll_cond_trylock (&(lock)) -extern void __lll_lock_wait (int *futex) attribute_hidden; +static inline int __attribute__((always_inline)) +__lll_robust_trylock(int *futex, int id) +{ + return 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; static inline void __attribute__((always_inline)) -__lll_mutex_lock(int *futex) +__lll_lock(int *futex, int private) { if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0) - __lll_lock_wait (futex); + { + 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) + + +static inline int __attribute__ ((always_inline)) +__lll_robust_lock (int *futex, int id, int private) +{ + int result = 0; + if (atomic_compare_and_exchange_bool_acq (futex, id, 0) != 0) + result = __lll_robust_lock_wait (futex, private); + return result; } -#define lll_mutex_lock(futex) __lll_mutex_lock (&(futex)) +#define lll_robust_lock(futex, id, private) \ + __lll_robust_lock (&(futex), id, private) static inline void __attribute__ ((always_inline)) -__lll_mutex_cond_lock (int *futex) +__lll_cond_lock (int *futex, int private) { if (atomic_compare_and_exchange_bool_acq (futex, 2, 0) != 0) - __lll_lock_wait (futex); + __lll_lock_wait (futex, private); } -#define lll_mutex_cond_lock(futex) __lll_mutex_cond_lock (&(futex)) +#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 *) - attribute_hidden; +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; static inline int __attribute__ ((always_inline)) -__lll_mutex_timedlock (int *futex, const struct timespec *abstime) +__lll_timedlock (int *futex, const struct timespec *abstime, int private) { int result = 0; if (atomic_compare_and_exchange_bool_acq (futex, 1, 0) != 0) - result = __lll_timedlock_wait (futex, abstime); + result = __lll_timedlock_wait (futex, abstime, private); return result; } -#define lll_mutex_timedlock(futex, abstime) \ - __lll_mutex_timedlock (&(futex), abstime) +#define lll_timedlock(futex, abstime, private) \ + __lll_timedlock (&(futex), abstime, private) -static inline void __attribute__ ((always_inline)) -__lll_mutex_unlock (int *futex) +static inline int __attribute__ ((always_inline)) +__lll_robust_timedlock (int *futex, const struct timespec *abstime, + int id, int private) { - int val = atomic_exchange_rel (futex, 0); - if (__builtin_expect (val > 1, 0)) - lll_futex_wake (futex, 1); + int result = 0; + if (atomic_compare_and_exchange_bool_acq (futex, id, 0) != 0) + result = __lll_robust_timedlock_wait (futex, abstime, private); + return result; } -#define lll_mutex_unlock(futex) __lll_mutex_unlock(&(futex)) - +#define lll_robust_timedlock(futex, abstime, id, private) \ + __lll_robust_timedlock (&(futex), abstime, id, private) -static inline void __attribute__ ((always_inline)) -__lll_mutex_unlock_force (int *futex) -{ - (void) atomic_exchange_rel (futex, 0); - lll_futex_wake (futex, 1); -} -#define lll_mutex_unlock_force(futex) __lll_mutex_unlock_force(&(futex)) +#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_mutex_islocked(futex) \ - (futex != 0) +#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) -/* Our internal lock implementation is identical to the binary-compatible - mutex implementation. */ -/* Type for lock object. */ -typedef int lll_lock_t; +#define lll_islocked(futex) \ + (futex != 0) /* Initializers for lock. */ #define LLL_LOCK_INITIALIZER (0) #define LLL_LOCK_INITIALIZER_LOCKED (1) -extern int lll_unlock_wake_cb (int *__futex) attribute_hidden; - -/* The states of a lock are: - 0 - untaken - 1 - taken by one user - >1 - taken by more users */ - -#define lll_trylock(lock) lll_mutex_trylock (lock) -#define lll_lock(lock) lll_mutex_lock (lock) -#define lll_unlock(lock) lll_mutex_unlock (lock) -#define lll_islocked(lock) lll_mutex_islocked (lock) /* 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); \ + 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 *) @@ -192,26 +281,4 @@ extern int __lll_timedwait_tid (int *, const struct timespec *) __res; \ }) - -/* Conditional variable handling. */ - -extern void __lll_cond_wait (pthread_cond_t *cond) - attribute_hidden; -extern int __lll_cond_timedwait (pthread_cond_t *cond, - const struct timespec *abstime) - attribute_hidden; -extern void __lll_cond_wake (pthread_cond_t *cond) - attribute_hidden; -extern void __lll_cond_broadcast (pthread_cond_t *cond) - attribute_hidden; - -#define lll_cond_wait(cond) \ - __lll_cond_wait (cond) -#define lll_cond_timedwait(cond, abstime) \ - __lll_cond_timedwait (cond, abstime) -#define lll_cond_wake(cond) \ - __lll_cond_wake (cond) -#define lll_cond_broadcast(cond) \ - __lll_cond_broadcast (cond) - #endif /* lowlevellock.h */ diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/pthread_once.c index 79a3c47ae..0e7e9790d 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/pthread_once.c +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/pthread_once.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 2003, 2004, 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 @@ -28,7 +28,7 @@ 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_futex_wake (once_control, INT_MAX, LLL_PRIVATE); } int @@ -72,7 +72,7 @@ __pthread_once (pthread_once_t *once_control, void (*init_routine) (void)) break; /* Same generation, some other thread was faster. Wait. */ - lll_futex_wait (once_control, oldval); + lll_futex_wait (once_control, oldval, LLL_PRIVATE); } /* This thread is the first here. Do the initialization. @@ -88,7 +88,7 @@ __pthread_once (pthread_once_t *once_control, void (*init_routine) (void)) atomic_increment (once_control); /* Wake up all other threads. */ - lll_futex_wake (once_control, INT_MAX); + lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE); return 0; } diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h index 49224079e..7049b3607 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/sysdep-cancel.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2003 Free Software Foundation, Inc. +/* Copyright (C) 2003, 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 @@ -55,6 +55,7 @@ __LABEL(name) \ bne a3, SYSCALL_ERROR_LABEL; \ __LABEL($pseudo_ret) \ .subsection 2; \ + cfi_startproc; \ __LABEL($pseudo_cancel) \ subq sp, 64, sp; \ cfi_def_cfa_offset(64); \ @@ -90,12 +91,13 @@ __LABEL($multi_error) \ cfi_def_cfa_offset(0); \ __LABEL($syscall_error) \ SYSCALL_ERROR_HANDLER; \ + cfi_endproc; \ .previous # undef PSEUDO_END # define PSEUDO_END(sym) \ - .subsection 2; \ cfi_endproc; \ + .subsection 2; \ .size sym, .-sym # define SAVE_ARGS_0 /* Nothing. */ @@ -142,7 +144,7 @@ __LABEL($syscall_error) \ extern int __local_multiple_threads attribute_hidden; # define SINGLE_THREAD_P \ __builtin_expect (__local_multiple_threads == 0, 1) -# elif defined(PIC) +# elif defined(__PIC__) # define SINGLE_THREAD_P(reg) ldl reg, __local_multiple_threads(gp) !gprel # else # define SINGLE_THREAD_P(reg) \ @@ -167,3 +169,9 @@ extern int __local_multiple_threads attribute_hidden; # define NO_CANCELLATION 1 #endif + +#ifndef __ASSEMBLER__ +# define RTLD_SINGLE_THREAD_P \ + __builtin_expect (THREAD_GETMEM (THREAD_SELF, \ + header.multiple_threads) == 0, 1) +#endif diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/vfork.S index f0c39982c..f4ed9311b 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/vfork.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/vfork.S @@ -42,5 +42,5 @@ PSEUDO (__vfork, vfork, 0) 1: ret PSEUDO_END (__vfork) -hidden_def (__vfork) +libc_hidden_def (__vfork) weak_alias (__vfork, vfork) |