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author | Ulrich Drepper <drepper@redhat.com> | 2000-06-12 20:50:37 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2000-06-12 20:50:37 +0000 |
commit | 3846ef75cf3309e2e8264c81fb510cdd54bee4fd (patch) | |
tree | 45ad5244c5af4a690d56f41da4ee36d864bc4242 /linuxthreads/sysdeps/sh/pspinlock.c | |
parent | 55985355ade2a038b567dd9b58153a98384ae703 (diff) | |
download | glibc-3846ef75cf3309e2e8264c81fb510cdd54bee4fd.zip glibc-3846ef75cf3309e2e8264c81fb510cdd54bee4fd.tar.gz glibc-3846ef75cf3309e2e8264c81fb510cdd54bee4fd.tar.bz2 |
Update.
2000-06-12 Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Yutaka Niibe <gniibe@chroot.org>
* sysdeps/sh/Dist: New file.
* sysdeps/sh/Implies: New file.
* sysdeps/sh/gmp-mparam.h: New file.
* sysdeps/sh/init-first.c: New file.
* sysdeps/sh/machine-gmon.h: New file.
* sysdeps/sh/memcpy.S: New file.
* sysdeps/sh/memprof.h: New file.
* sysdeps/sh/memset.S: New file.
* sysdeps/sh/sh3/__longjmp.S: New file.
* sysdeps/sh/sh3/bits/endian.h: New file.
* sysdeps/sh/sh3/bits/huge_val.h: New file.
* sysdeps/sh/sh3/bits/setjmp.h: New file.
* sysdeps/sh/sh3/bsd-_setjmp.S: New file.
* sysdeps/sh/sh3/bsd-setjmp.S: New file.
* sysdeps/sh/sh3/dl-machine.h: New file.
* sysdeps/sh/sh3/elf/initfini.c: New file.
* sysdeps/sh/sh3/elf/start.S: New file.
* sysdeps/sh/sh3/setjmp.S: New file.
* sysdeps/sh/sh3/sys/ucontext.h: New file.
* sysdeps/sh/sh4/__longjmp.S: New file.
* sysdeps/sh/sh4/bits/endian.h: New file.
* sysdeps/sh/sh4/bits/huge_val.h: New file.
* sysdeps/sh/sh4/bits/setjmp.h: New file.
* sysdeps/sh/sh4/bsd-_setjmp.S: New file.
* sysdeps/sh/sh4/bsd-setjmp.S: New file.
* sysdeps/sh/sh4/dl-machine.h: New file.
* sysdeps/sh/sh4/elf/initfini.c: New file.
* sysdeps/sh/sh4/elf/start.S: New file.
* sysdeps/sh/sh4/fpu/bits/fenv.h: New file.
* sysdeps/sh/sh4/fpu/bits/huge_val.h: New file.
* sysdeps/sh/sh4/fpu/bits/mathdef.h: New file.
* sysdeps/sh/sh4/fpu/fclrexcpt.c: New file.
* sysdeps/sh/sh4/fpu/fegetenv.c: New file.
* sysdeps/sh/sh4/fpu/fegetround.c: New file.
* sysdeps/sh/sh4/fpu/feholdexcpt.c: New file.
* sysdeps/sh/sh4/fpu/fesetenv.c: New file.
* sysdeps/sh/sh4/fpu/fesetround.c: New file.
* sysdeps/sh/sh4/fpu/fpu_control.h: New file.
* sysdeps/sh/sh4/fpu/fraiseexcpt.c: New file.
* sysdeps/sh/sh4/fpu/fsetexcptflg.c: New file.
* sysdeps/sh/sh4/fpu/ftestexcept.c: New file.
* sysdeps/sh/sh4/fpu/libm-test-ulps: New file.
* sysdeps/sh/sh4/setjmp.S: New file.
* sysdeps/sh/sh4/sys/ucontext.h: New file.
* sysdeps/sh/strlen.S: New file.
* sysdeps/sh/sysdep.h: New file.
* sysdeps/unix/sh/sysdep.S: New file.
* sysdeps/unix/sh/sysdep.h: New file.
* sysdeps/unix/sysv/linux/sh/Dist: New file.
* sysdeps/unix/sysv/linux/sh/Makefile: New file.
* sysdeps/unix/sysv/linux/sh/Versions: New file.
* sysdeps/unix/sysv/linux/sh/bits/mman.h: New file.
* sysdeps/unix/sysv/linux/sh/bits/resource.h: New file.
* sysdeps/unix/sysv/linux/sh/brk.c: New file.
* sysdeps/unix/sysv/linux/sh/chown.c: New file.
* sysdeps/unix/sysv/linux/sh/clone.S: New file.
* sysdeps/unix/sysv/linux/sh/fchown.c: New file.
* sysdeps/unix/sysv/linux/sh/fxstat.c: New file.
* sysdeps/unix/sysv/linux/sh/getegid.c: New file.
* sysdeps/unix/sysv/linux/sh/geteuid.c: New file.
* sysdeps/unix/sysv/linux/sh/getgroups.c: New file.
* sysdeps/unix/sysv/linux/sh/getresgid.c: New file.
* sysdeps/unix/sysv/linux/sh/getresuid.c: New file.
* sysdeps/unix/sysv/linux/sh/getrlimit.c: New file.
* sysdeps/unix/sysv/linux/sh/getrlimit64.c: New file.
* sysdeps/unix/sysv/linux/sh/getuid.c: New file.
* sysdeps/unix/sysv/linux/sh/lchown.c: New file.
* sysdeps/unix/sysv/linux/sh/lxstat.c: New file.
* sysdeps/unix/sysv/linux/sh/msgctl.c: New file.
* sysdeps/unix/sysv/linux/sh/oldgetrlimit64.c: New file.
* sysdeps/unix/sysv/linux/sh/pipe.S: New file.
* sysdeps/unix/sysv/linux/sh/profil-counter.h: New file.
* sysdeps/unix/sysv/linux/sh/semctl.c: New file.
* sysdeps/unix/sysv/linux/sh/setegid.c: New file.
* sysdeps/unix/sysv/linux/sh/seteuid.c: New file.
* sysdeps/unix/sysv/linux/sh/setfsgid.c: New file.
* sysdeps/unix/sysv/linux/sh/setfsuid.c: New file.
* sysdeps/unix/sysv/linux/sh/setgid.c: New file.
* sysdeps/unix/sysv/linux/sh/setgroups.c: New file.
* sysdeps/unix/sysv/linux/sh/setregid.c: New file.
* sysdeps/unix/sysv/linux/sh/setresgid.c: New file.
* sysdeps/unix/sysv/linux/sh/setresuid.c: New file.
* sysdeps/unix/sysv/linux/sh/setreuid.c: New file.
* sysdeps/unix/sysv/linux/sh/setrlimit.c: New file.
* sysdeps/unix/sysv/linux/sh/setuid.c: New file.
* sysdeps/unix/sysv/linux/sh/sh3/register-dump.h: New file.
* sysdeps/unix/sysv/linux/sh/sh4/register-dump.h: New file.
* sysdeps/unix/sysv/linux/sh/shmctl.c: New file.
* sysdeps/unix/sysv/linux/sh/sigcontextinfo.h: New file.
* sysdeps/unix/sysv/linux/sh/socket.S: New file.
* sysdeps/unix/sysv/linux/sh/sys/io.h: New file.
* sysdeps/unix/sysv/linux/sh/sys/ucontext.h: New file.
* sysdeps/unix/sysv/linux/sh/sys/user.h: New file.
* sysdeps/unix/sysv/linux/sh/syscalls.list: New file.
* sysdeps/unix/sysv/linux/sh/sysdep.S: New file.
* sysdeps/unix/sysv/linux/sh/sysdep.h: New file.
* sysdeps/unix/sysv/linux/sh/vfork.S: New file.
* sysdeps/unix/sysv/linux/sh/xstat.c: New file.
Diffstat (limited to 'linuxthreads/sysdeps/sh/pspinlock.c')
-rw-r--r-- | linuxthreads/sysdeps/sh/pspinlock.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/linuxthreads/sysdeps/sh/pspinlock.c b/linuxthreads/sysdeps/sh/pspinlock.c new file mode 100644 index 0000000..be9fc80 --- /dev/null +++ b/linuxthreads/sysdeps/sh/pspinlock.c @@ -0,0 +1,80 @@ +/* POSIX spinlock implementation. SH version. + Copyright (C) 2000 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + unsigned int val; + + do + asm volatile ("tas.b @%1; movt %0" + : "=r" (val) + : "r" (lock) + : "memory"); + while (val != 0); + + return 0; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + unsigned int val; + + asm volatile ("tas.b @%1; movt %0" + : "=r" (val) + : "r" (lock) + : "memory"); + return val ? EBUSY : 0; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + return *lock = 0; +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + return *lock = 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) |