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-rw-r--r--libpthread/linuxthreads/sysdeps/arm/pt-machine.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/libpthread/linuxthreads/sysdeps/arm/pt-machine.h b/libpthread/linuxthreads/sysdeps/arm/pt-machine.h
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--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/arm/pt-machine.h
@@ -0,0 +1,48 @@
+/* Machine-dependent pthreads configuration and inline functions.
+ ARM version.
+ Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Philip Blundell <philb@gnu.org>.
+
+ 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. */
+
+#ifndef PT_EI
+# define PT_EI extern inline
+#endif
+
+
+/* This will not work on ARM1 or ARM2 because SWP is lacking on those
+ machines. Unfortunately we have no way to detect this at compile
+ time; let's hope nobody tries to use one. */
+
+/* Spinlock implementation; required. */
+PT_EI int
+testandset (int *spinlock)
+{
+ register unsigned int ret;
+
+ __asm__ __volatile__("swp %0, %1, [%2]"
+ : "=r"(ret)
+ : "0"(1), "r"(spinlock));
+
+ return ret;
+}
+
+
+/* Get some notion of the current stack. Need not be exactly the top
+ of the stack, just something somewhere in the current frame. */
+#define CURRENT_STACK_FRAME stack_pointer
+register char * stack_pointer __asm__ ("sp");