1 files changed, 105 insertions, 0 deletions
diff --git a/sim/common/sim-bits.c b/sim/common/sim-bits.c
new file mode 100644
index 0000000..1f0a8e5
--- /dev/null
+++ b/sim/common/sim-bits.c
@@ -0,0 +1,105 @@
+/*  This file is part of the program psim.
+
+    Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+ 
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ 
+    */
+
+
+#ifndef _SIM_BITS_C_
+#define _SIM_BITS_C_
+
+#include "sim-basics.h"
+
+
+INLINE_SIM_BITS\
+(unsigned_word)
+MASKED(unsigned_word val,
+       unsigned start,
+       unsigned stop)
+{
+  return ((val) & MASK(start, stop));
+}
+
+
+
+INLINE_SIM_BITS\
+(unsigned_word)
+LSMASKED(unsigned_word val,
+	 unsigned nr_bits)
+{
+  return MASKED(val,
+		WITH_TARGET_WORD_BITSIZE - nr_bits,
+		WITH_TARGET_WORD_BITSIZE - 1);
+}
+
+
+
+INLINE_SIM_BITS\
+(unsigned_word)
+EXTRACTED(unsigned_word val,
+	  unsigned start,
+	  unsigned stop)
+{
+  ASSERT(start <= stop);
+#if (WITH_TARGET_WORD_BITSIZE == 64)
+  return EXTRACTED64(val, start, stop);
+#endif
+#if (WITH_TARGET_WORD_BITSIZE == 32)
+  if (stop < 32)
+    return 0;
+  else
+    return ((val >> (63 - stop))
+	    & MASK(start+(63-stop), 63));
+#endif
+}
+
+
+INLINE_SIM_BITS\
+(unsigned_word)
+INSERTED(unsigned_word val,
+	 unsigned start,
+	 unsigned stop)
+{
+  ASSERT(start <= stop);
+#if (WITH_TARGET_WORD_BITSIZE == 64)
+  return INSERTED64(val, start, stop);
+#endif
+#if (WITH_TARGET_WORD_BITSIZE == 32)
+  if (stop < 32)
+    return 0;
+  else
+    return ((val & MASK(start+(63-stop), 63))
+	    << (63 - stop));
+#endif
+}
+
+
+
+
+#define N 16
+#include "sim-n-bits.h"
+#undef N
+
+#define N 32
+#include "sim-n-bits.h"
+#undef N
+
+#define N 64
+#include "sim-n-bits.h"
+#undef N
+
+#endif /* _SIM_BITS_C_ */