3 files changed, 118 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/m68k/bits/atomicity.h b/libc/sysdeps/linux/m68k/bits/atomicity.h
new file mode 100644
index 000000000..464948086
--- /dev/null
+++ b/libc/sysdeps/linux/m68k/bits/atomicity.h
@@ -0,0 +1,64 @@
+/* Low-level functions for atomic operations.  m680x0 version, x >= 2.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
+   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.  */
+
+#ifndef _ATOMICITY_H
+#define _ATOMICITY_H	1
+
+#include <inttypes.h>
+
+
+static inline int
+__attribute__ ((unused))
+exchange_and_add (volatile uint32_t *mem, int val)
+{
+  register int result = *mem;
+  register int temp;
+  __asm__ __volatile__ ("1: move%.l %0,%1;"
+			"   add%.l %2,%1;"
+			"   cas%.l %0,%1,%3;"
+			"   jbne 1b"
+			: "=d" (result), "=&d" (temp)
+			: "d" (val), "m" (*mem), "0" (result) : "memory");
+  return result;
+}
+
+static inline void
+__attribute__ ((unused))
+atomic_add (volatile uint32_t *mem, int val)
+{
+  /* XXX Use cas here as well?  */
+  __asm__ __volatile__ ("add%.l %0,%1"
+			: : "id" (val), "m" (*mem) : "memory");
+}
+
+static inline int
+__attribute__ ((unused))
+compare_and_swap (volatile long int *p, long int oldval, long int newval)
+{
+  char ret;
+  long int readval;
+
+  __asm__ __volatile__ ("cas%.l %2,%3,%1; seq %0"
+                        : "=dm" (ret), "=m" (*p), "=d" (readval)
+                        : "d" (newval), "m" (*p), "2" (oldval));
+  return ret;
+}
+
+#endif /* atomicity.h */
diff --git a/libc/sysdeps/linux/m68k/bits/sigcontextinfo.h b/libc/sysdeps/linux/m68k/bits/sigcontextinfo.h
new file mode 100644
index 000000000..b7e08cfc9
--- /dev/null
+++ b/libc/sysdeps/linux/m68k/bits/sigcontextinfo.h
@@ -0,0 +1,26 @@
+/* Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>, 1998.
+
+   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 SIGCONTEXT int _code, struct sigcontext *
+#define SIGCONTEXT_EXTRA_ARGS _code,
+#define GET_PC(ctx)	((void *) (ctx)->sc_pc)
+#define GET_FRAME(ctx)	((void *) __builtin_frame_address (1))
+#define GET_STACK(ctx)	((void *) (ctx)->sc_usp)
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+  (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
diff --git a/libc/sysdeps/linux/m68k/bits/stackinfo.h b/libc/sysdeps/linux/m68k/bits/stackinfo.h
new file mode 100644
index 000000000..66e5a17fb
--- /dev/null
+++ b/libc/sysdeps/linux/m68k/bits/stackinfo.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 1999 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.  */
+
+/* This file contains a bit of information about the stack allocation
+   of the processor.  */
+
+#ifndef _STACKINFO_H
+#define _STACKINFO_H	1
+
+/* On m68k the stack grows down.  */
+#define _STACK_GROWS_DOWN	1
+
+#endif	/* stackinfo.h */