1 /* This file is part of the program psim.
3 Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
4 Copyright (C) 1997, Free Software Foundation, Inc.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #error "N must be #defined"
27 /* NOTE: See end of file for #undef */
28 #define unsignedN XCONCAT2(unsigned,N)
29 #define signedN XCONCAT2(signed,N)
30 #define MASKEDn XCONCAT2(MASKED,N)
31 #define MASKn XCONCAT2(MASK,N)
32 #define LSMASKEDn XCONCAT2(LSMASKED,N)
33 #define EXTRACTEDn XCONCAT2(EXTRACTED,N)
34 #define INSERTEDn XCONCAT2(INSERTED,N)
35 #define ROTn XCONCAT2(ROT,N)
36 #define ROTLn XCONCAT2(ROTL,N)
37 #define ROTRn XCONCAT2(ROTR,N)
38 #define SEXTn XCONCAT2(SEXT,N)
43 MASKEDn(unsignedN word
,
47 return (word
& MASKn(start
, stop
));
53 LSMASKEDn(unsignedN word
,
56 return (word
& MASKn(N
- nr_bits
, N
- 1));
62 EXTRACTEDn(unsignedN val
,
66 return LSMASKEDn((((unsignedN
)(val
)) >> (N
- stop
- 1)),
73 INSERTEDn(unsignedN val
,
77 return (((unsignedN
)(val
)
78 << _MAKE_SHIFT(N
, stop
))
79 & MASKn(start
, stop
));
90 return ROTRn(val
, shift
);
92 return ROTLn(val
, -shift
);
105 result
= (((val
) << (shift
)) | ((val
) >> ((N
)-(shift
))));
117 result
= (((val
) >> (shift
)) | ((val
) << ((N
)-(shift
))));
127 /* make the sign-bit most significant and then smear it back into
129 ASSERT(sign_bit
< N
);
130 return (val
<< sign_bit
) >> sign_bit
;
134 /* NOTE: See start of file for #define */
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