h8300 updates from Yoshinori Sato

1 files changed, 58 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/h8300/pt-machine.h b/libc/sysdeps/linux/h8300/pt-machine.h
new file mode 100644
index 000000000..ad83147cb
--- /dev/null
+++ b/libc/sysdeps/linux/h8300/pt-machine.h
@@ -0,0 +1,58 @@
+/* Machine-dependent pthreads configuration and inline functions.
+   H8/300 version.
+   Copyright (C) 1996, 1998, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson <rth@tamu.edu>.
+
+   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; 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_MACHINE_H
+#define _PT_MACHINE_H   1
+
+#ifndef PT_EI
+# define PT_EI extern inline
+#endif
+
+extern long int testandset (int *spinlock);
+
+/* Spinlock implementation; required.  */
+PT_EI long int
+testandset (int *spinlock)
+{
+  char ret;
+
+  __asm__ __volatile__(
+      "sub.w %0,%0\n\t"
+      "stc ccr,@-sp\n\t"
+      "orc #0x80,ccr\n\t"
+      "bld #0,@%2\n\t"
+      "bset #0,@%2\n\t"
+      "rotxl.w %0\n\t"
+      "ldc @sp+,ccr\n\t"
+      :"=r"(ret),"=m"(*spinlock)
+      :"g"(spinlock)
+      :"cc");
+
+  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");
+
+#endif /* pt-machine.h */