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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
commitc906108c21474dfb4ed285bcc0ac6fe02cd400cc (patch)
treea0015aa5cedc19ccbab307251353a41722a3ae13 /sim/ppc/bits.c
parentcd946cff9ede3f30935803403f06f6ed30cad136 (diff)
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Initial creation of sourceware repositorygdb-4_18-branchpoint
Diffstat (limited to 'sim/ppc/bits.c')
-rw-r--r--sim/ppc/bits.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/sim/ppc/bits.c b/sim/ppc/bits.c
new file mode 100644
index 0000000..00bba51
--- /dev/null
+++ b/sim/ppc/bits.c
@@ -0,0 +1,114 @@
+/* This file is part of the program psim.
+
+ Copyright (C) 1994-1995, 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 _BITS_C_
+#define _BITS_C_
+
+#include "basics.h"
+
+
+INLINE_BITS\
+(unsigned32)
+MASKED32(unsigned32 word,
+ unsigned start,
+ unsigned stop)
+{
+ return (word & MASK32(start, stop));
+}
+
+INLINE_BITS\
+(unsigned64)
+MASKED64(unsigned64 word,
+ unsigned start,
+ unsigned stop)
+{
+ return (word & MASK64(start, stop));
+}
+
+INLINE_BITS\
+(unsigned_word)
+MASKED(unsigned_word word,
+ unsigned start,
+ unsigned stop)
+{
+ return ((word) & MASK(start, stop));
+}
+
+
+
+INLINE_BITS\
+(unsigned_word)
+EXTRACTED(unsigned_word word,
+ unsigned start,
+ unsigned stop)
+{
+ ASSERT(start <= stop);
+#if (WITH_TARGET_WORD_BITSIZE == 64)
+ return _EXTRACTEDn(64, word, start, stop);
+#else
+ if (stop < 32)
+ return 0;
+ else
+ return ((word >> (63 - stop))
+ & MASK(start+(63-stop), 63));
+#endif
+}
+
+
+INLINE_BITS\
+(unsigned_word)
+INSERTED(unsigned_word word,
+ unsigned start,
+ unsigned stop)
+{
+ ASSERT(start <= stop);
+#if (WITH_TARGET_WORD_BITSIZE == 64)
+ return _INSERTEDn(64, word, start, stop);
+#else
+ if (stop < 32)
+ return 0;
+ else
+ return ((word & MASK(start+(63-stop), 63))
+ << (63 - stop));
+#endif
+}
+
+
+INLINE_BITS\
+(unsigned32)
+ROTL32(unsigned32 val,
+ long shift)
+{
+ ASSERT(shift >= 0 && shift <= 32);
+ return _ROTLn(32, val, shift);
+}
+
+
+INLINE_BITS\
+(unsigned64)
+ROTL64(unsigned64 val,
+ long shift)
+{
+ ASSERT(shift >= 0 && shift <= 64);
+ return _ROTLn(64, val, shift);
+}
+
+#endif /* _BITS_C_ */