2004-01-23 David Carlton <[email protected]>

[binutils.git] / sim / common / sim-n-bits.h

diff --git a/sim/common/sim-n-bits.h b/sim/common/sim-n-bits.h
index 996095a96e755bc60fadbeb65d49f529103f39f6..7c77c83100c2791203355603634973897faf17ff 100644 (file)
--- a/sim/common/sim-n-bits.h
+++ b/sim/common/sim-n-bits.h
@@ -1,30 +1,32 @@
-/*  This file is part of the program psim.
+/* The common simulator framework for GDB, the GNU Debugger.
 
-    Copyright (C) 1994-1996, Andrew Cagney <[email protected]>
-    Copyright (C) 1997, Free Software Foundation, Inc.
+   Copyright 2002 Free Software Foundation, Inc.
 
-    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.
+   Contributed by Andrew Cagney and Red Hat.
 
-    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.
- 
-    */
+   This file is part of GDB.
+
+   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 N
 #error "N must be #defined"
 #endif
 
-#include "sim-xcat.h"
+#include "symcat.h"
 
 #if defined(__STDC__) && defined(signed)
 /* If signed were defined to be say __signed (ie, some versions of Linux),
@@ -36,18 +38,19 @@
 /* NOTE: See end of file for #undef */
 #define unsignedN XCONCAT2(unsigned,N)
 #define signedN XCONCAT2(signed,N)
-#define MASKn XCONCAT2(MASK,N)
-#define LSMASKEDn XCONCAT2(LSMASKED,N)
 #define LSMASKn XCONCAT2(LSMASK,N)
-#define MSMASKEDn XCONCAT2(MSMASKED,N)
 #define MSMASKn XCONCAT2(MSMASK,N)
+#define LSMASKEDn XCONCAT2(LSMASKED,N)
+#define MSMASKEDn XCONCAT2(MSMASKED,N)
 #define LSEXTRACTEDn XCONCAT2(LSEXTRACTED,N)
 #define MSEXTRACTEDn XCONCAT2(MSEXTRACTED,N)
-#define INSERTEDn XCONCAT2(INSERTED,N)
+#define LSINSERTEDn XCONCAT2(LSINSERTED,N)
+#define MSINSERTEDn XCONCAT2(MSINSERTED,N)
 #define ROTn XCONCAT2(ROT,N)
 #define ROTLn XCONCAT2(ROTL,N)
 #define ROTRn XCONCAT2(ROTR,N)
-#define SEXTn XCONCAT2(SEXT,N)
+#define MSSEXTn XCONCAT2(MSSEXT,N)
+#define LSSEXTn XCONCAT2(LSSEXT,N)
 
 /* TAGS: LSMASKED16 LSMASKED32 LSMASKED64 */
 
@@ -99,16 +102,29 @@ MSEXTRACTEDn (unsignedN val,
   return val;
 }
 
-/* TAGS: INSERTED16 INSERTED32 INSERTED64 */
+/* TAGS: LSINSERTED16 LSINSERTED32 LSINSERTED64 */
 
 INLINE_SIM_BITS\
 (unsignedN)
-INSERTEDn (unsignedN val,
-          int start,
-          int stop)
+LSINSERTEDn (unsignedN val,
+            int start,
+            int stop)
+{
+  val <<= stop;
+  val &= LSMASKn (start, stop);
+  return val;
+}
+
+/* TAGS: MSINSERTED16 MSINSERTED32 MSINSERTED64 */
+
+INLINE_SIM_BITS\
+(unsignedN)
+MSINSERTEDn (unsignedN val,
+            int start,
+            int stop)
 {
-  val <<= _LSB_SHIFT (N, stop);
-  val &= MASKn (start, stop);
+  val <<= ((N - 1) - stop);
+  val &= MSMASKn (start, stop);
   return val;
 }
 
@@ -153,35 +169,52 @@ ROTRn (unsignedN val,
   return result;
 }
 
-/* TAGS: SEXT16 SEXT32 SEXT64 */
+/* TAGS: LSSEXT16 LSSEXT32 LSSEXT64 */
+
+INLINE_SIM_BITS\
+(unsignedN)
+LSSEXTn (signedN val,
+        int sign_bit)
+{
+  int shift;
+  /* make the sign-bit most significant and then smear it back into
+     position */
+  ASSERT (sign_bit < N);
+  shift = ((N - 1) - sign_bit);
+  val <<= shift;
+  val >>= shift;
+  return val;
+}
+
+/* TAGS: MSSEXT16 MSSEXT32 MSSEXT64 */
 
 INLINE_SIM_BITS\
 (unsignedN)
-SEXTn (signedN val,
-       int sign_bit)
+MSSEXTn (signedN val,
+        int sign_bit)
 {
   /* make the sign-bit most significant and then smear it back into
      position */
   ASSERT (sign_bit < N);
-  val <<= _MSB_SHIFT (N, sign_bit);
-  val >>= _MSB_SHIFT (N, sign_bit);
+  val <<= sign_bit;
+  val >>= sign_bit;
   return val;
 }
 
 
 /* NOTE: See start of file for #define */
-#undef SEXTn
+#undef LSSEXTn
+#undef MSSEXTn
 #undef ROTLn
 #undef ROTRn
 #undef ROTn
-#undef INSERTEDn
+#undef LSINSERTEDn
+#undef MSINSERTEDn
 #undef LSEXTRACTEDn
 #undef MSEXTRACTEDn
 #undef LSMASKEDn
 #undef LSMASKn
 #undef MSMASKEDn
 #undef MSMASKn
-#undef MASKn
-#undef MASKEDn
 #undef signedN
 #undef unsignedN