pthread_spin_trylock implementation for SH.
authordrepper <drepper>
Mon, 10 Feb 2003 09:11:29 +0000 (09:11 +0000)
committerdrepper <drepper>
Mon, 10 Feb 2003 09:11:29 +0000 (09:11 +0000)
nptl/sysdeps/sh/pthread_spin_trylock.S [new file with mode: 0644]

diff --git a/nptl/sysdeps/sh/pthread_spin_trylock.S b/nptl/sysdeps/sh/pthread_spin_trylock.S
new file mode 100644 (file)
index 0000000..63ae4d3
--- /dev/null
@@ -0,0 +1,32 @@
+/* Copyright (C) 2003 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.  */
+
+#define EBUSY  16
+
+       .globl  pthread_spin_trylock
+       .type   pthread_spin_trylock,@function
+       .align  5
+pthread_spin_trylock:
+       tas.b   @r4
+       bf/s    1f
+        mov    #EBUSY, r0
+       mov     #0, r0
+1:
+       rts
+        nop
+       .size   pthread_spin_trylock,.-pthread_spin_trylock