Update.
2000-07-27 Jes Sorensen <jes@linuxcare.com> * sysdeps/unix/sysv/linux/ia64/fork.c: Make __libc_fork the strong name and add weak alias for __fork. * sysdeps/unix/sysv/linux/ia64/syscalls.list: Change llseek, pread & pwrite to use __libc_<name> as strong names instead of __syscall_<name>. * include/sched.h: Add clone2 prototype. 2000-07-26 Jes Sorensen <jes@linuxcare.com> * sysdeps/unix/sysv/linux/ia64/sysdep.h (ENTRY): Don't declare the procedure name twice. 2000-07-27 Philip Blundell <philb@gnu.org> * malloc/malloc.c (HAVE_MREMAP): Undo change of 1997-12-04.
This commit is contained in:
Ulrich Drepper
parent
baec5641ed
commit
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20
ChangeLog
20
ChangeLog
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@ -1,3 +1,23 @@
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2000-07-27 Jes Sorensen <jes@linuxcare.com>
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* sysdeps/unix/sysv/linux/ia64/fork.c: Make __libc_fork the strong
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name and add weak alias for __fork.
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* sysdeps/unix/sysv/linux/ia64/syscalls.list: Change llseek, pread
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& pwrite to use __libc_<name> as strong names instead of
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__syscall_<name>.
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* include/sched.h: Add clone2 prototype.
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2000-07-26 Jes Sorensen <jes@linuxcare.com>
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* sysdeps/unix/sysv/linux/ia64/sysdep.h (ENTRY): Don't declare the
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procedure name twice.
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2000-07-27 Philip Blundell <philb@gnu.org>
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* malloc/malloc.c (HAVE_MREMAP): Undo change of 1997-12-04.
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2000-07-27 Andreas Jaeger <aj@suse.de>
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* sysdeps/unix/sysv/linux/bits/socket.h: Rename MSG_URG TO
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@ -13,7 +13,9 @@ extern int __sched_get_priority_max (int __algorithm);
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extern int __sched_get_priority_min (int __algorithm);
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extern int __sched_rr_get_interval (__pid_t __pid, struct timespec *__t);
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/* This is Linux specific. */
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/* These are Linux specific. */
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extern int __clone (int (*__fn) (void *__arg), void *__child_stack,
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int __flags, void *__arg);
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extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
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size_t __child_stack_size, int __flags, void *__arg);
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#endif
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@ -2,4 +2,5 @@
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mips.*-.*-linux.* libpthread=0 GLIBC_2.0 GLIBC_2.2
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sparc64-.*-linux.* libpthread=0 GLIBC_2.2
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sh.*-.*-linux.* libpthread=0 GLIBC_2.2
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ia64.*-.*-linux.* libpthread=0 GLIBC_2.2
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.*-.*-linux.* libpthread=0
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@ -0,0 +1,93 @@
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/* POSIX spinlock implementation. ia64 version.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jes Sorensen <jes@linuxcare.com>
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <pthread.h>
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/* This implementation is inspired by the implementation used in the
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Linux kernel. */
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int
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__pthread_spin_lock (pthread_spinlock_t *lock)
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{
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asm volatile
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("mov ar.ccv = r0\n\t"
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"mov r3 = 1\n\t"
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";;\n"
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"1:\n\t"
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"ld4 r2 = %0\n\t"
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";;\n\t"
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"cmp4.eq p0, p7 = r0, r2\n\t"
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"(p7) br.cond.spnt.few 1b \n\t"
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"cmpxchg4.acq r2 = %0, r3, ar.ccv\n\t"
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";;\n\t"
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"cmp4.eq p0, p7 = r0, r2\n\t"
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"(p7) br.cond.spnt.few 1b\n\t"
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";;\n"
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:: "m" (lock) : "r2", "r3", "p7", "memory");
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return 0;
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}
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weak_alias (__pthread_spin_lock, pthread_spin_lock)
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int
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__pthread_spin_trylock (pthread_spinlock_t *lock)
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{
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int oldval;
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asm volatile
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("mov ar.ccv = r0\n\t"
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"mov r2 = 1\n\t"
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";;\n\t"
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"cmpxchg4.acq %0 = %1, r2, ar.ccv\n\t"
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";;\n"
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: "=r" (oldval) : "m" (lock) : "r2", "memory");
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return oldval > 0 ? 0 : EBUSY;
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}
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weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
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int
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__pthread_spin_unlock (pthread_spinlock_t *lock)
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{
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return *lock = 0;
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}
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weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
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int
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__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
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{
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/* We can ignore the `pshared' parameter. Since we are busy-waiting
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all processes which can access the memory location `lock' points
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to can use the spinlock. */
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return *lock = 0;
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}
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weak_alias (__pthread_spin_init, pthread_spin_init)
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int
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__pthread_spin_destroy (pthread_spinlock_t *lock)
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{
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/* Nothing to do. */
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return 0;
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}
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weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
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@ -25,9 +25,10 @@ extern int __clone (int (*fn)(void *), void *ksp, unsigned long int flags,
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void *arg);
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int
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__fork (void)
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__libc_fork (void)
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{
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return __clone (NULL, NULL, SIGCHLD, 0);
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}
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weak_alias (__fork, fork)
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weak_alias (__libc_fork, fork)
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weak_alias (__libc_fork, __fork)
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@ -3,9 +3,9 @@
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umount2 - umount 2 __umount2 umount2
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# Whee! 64-bit systems naturally implement llseek.
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llseek EXTRA lseek 3 __llseek llseek __lseek64 lseek64
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pread - pread 4 __syscall_pread __syscall_pread64 __pread pread __pread64 pread64
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pwrite - pwrite 4 __syscall_pwrite __syscall_pwrite64 __pwrite pwrite __pwrite64 pwrite64
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llseek EXTRA lseek 3 __libc_lseek64 __lseek llseek __lseek64 lseek64
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pread - pread 4 __libc_pread __libc_pread64 __pread pread __pread64 pread64
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pwrite - pwrite 4 __libc_pwrite __libc_pwrite64 __pwrite pwrite __pwrite64 pwrite64
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fstatfs - fstatfs i:ip __fstatfs fstatfs fstatfs64 __fstatfs64
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statfs - statfs i:sp __statfs statfs statfs64
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mmap - mmap b:aniiii __mmap mmap __mmap64 mmap64
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@ -65,7 +65,6 @@
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.psr abi64; \
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.psr lsb; \
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.lsb; \
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.proc C_SYMBOL_NAME(name); \
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.text; \
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.align 32; \
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.proc C_SYMBOL_NAME(name); \
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