[deliverable/binutils-gdb.git] / sim / ppc / bits.c

/*  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 3 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, see <http://www.gnu.org/licenses/>.
 
    */


#ifndef _BITS_C_
#define _BITS_C_

#include "basics.h"

INLINE_BITS\
(unsigned64)
LSMASKED64 (unsigned64 word,
	    int start,
	    int stop)
{
  word &= LSMASK64 (start, stop);
  return word;
}

INLINE_BITS\
(unsigned64)
LSEXTRACTED64 (unsigned64 val,
	       int start,
	       int stop)
{
  val <<= (64 - 1 - start); /* drop high bits */
  val >>= (64 - 1 - start) + (stop); /* drop low bits */
  return val;
}
 
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_ */
Commit	Line	Data
c906108c SS	1	/* This file is part of the program psim.
	2
	3	Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
3fd725ef	7	the Free Software Foundation; either version 3 of the License, or
c906108c SS	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
51b318de	16	along with this program; if not, see <http://www.gnu.org/licenses/>.
c906108c SS	17
	18	*/
	19
	20
	21	#ifndef _BITS_C_
	22	#define _BITS_C_
	23
	24	#include "basics.h"
	25
5c884464 MG	26	INLINE_BITS\
	27	(unsigned64)
	28	LSMASKED64 (unsigned64 word,
	29	int start,
	30	int stop)
	31	{
	32	word &= LSMASK64 (start, stop);
	33	return word;
	34	}
c906108c	35
5c884464 MG	36	INLINE_BITS\
	37	(unsigned64)
	38	LSEXTRACTED64 (unsigned64 val,
	39	int start,
	40	int stop)
	41	{
	42	val <<= (64 - 1 - start); /* drop high bits */
	43	val >>= (64 - 1 - start) + (stop); /* drop low bits */
	44	return val;
	45	}
	46
c906108c SS	47	INLINE_BITS\
	48	(unsigned32)
	49	MASKED32(unsigned32 word,
	50	unsigned start,
	51	unsigned stop)
	52	{
	53	return (word & MASK32(start, stop));
	54	}
	55
	56	INLINE_BITS\
	57	(unsigned64)
	58	MASKED64(unsigned64 word,
	59	unsigned start,
	60	unsigned stop)
	61	{
	62	return (word & MASK64(start, stop));
	63	}
	64
	65	INLINE_BITS\
	66	(unsigned_word)
	67	MASKED(unsigned_word word,
	68	unsigned start,
	69	unsigned stop)
	70	{
	71	return ((word) & MASK(start, stop));
	72	}
	73
	74
	75
	76	INLINE_BITS\
	77	(unsigned_word)
	78	EXTRACTED(unsigned_word word,
	79	unsigned start,
	80	unsigned stop)
	81	{
	82	ASSERT(start <= stop);
	83	#if (WITH_TARGET_WORD_BITSIZE == 64)
	84	return _EXTRACTEDn(64, word, start, stop);
	85	#else
	86	if (stop < 32)
	87	return 0;
	88	else
	89	return ((word >> (63 - stop))
	90	& MASK(start+(63-stop), 63));
	91	#endif
	92	}
	93
	94
	95	INLINE_BITS\
	96	(unsigned_word)
	97	INSERTED(unsigned_word word,
	98	unsigned start,
	99	unsigned stop)
	100	{
	101	ASSERT(start <= stop);
	102	#if (WITH_TARGET_WORD_BITSIZE == 64)
	103	return _INSERTEDn(64, word, start, stop);
	104	#else
	105	if (stop < 32)
	106	return 0;
	107	else
	108	return ((word & MASK(start+(63-stop), 63))
	109	<< (63 - stop));
	110	#endif
111	}
112
113
114	INLINE_BITS\
115	(unsigned32)
116	ROTL32(unsigned32 val,
117	long shift)
118	{
119	ASSERT(shift >= 0 && shift <= 32);
120	return _ROTLn(32, val, shift);
121	}
122
123
124	INLINE_BITS\
125	(unsigned64)
126	ROTL64(unsigned64 val,
127	long shift)
128	{
129	ASSERT(shift >= 0 && shift <= 64);
130	return _ROTLn(64, val, shift);
131	}
132
133	#endif /* _BITS_C_ */