1 files changed, 106 insertions, 0 deletions
diff --git a/gcc/ch/runtime/powerset.h b/gcc/ch/runtime/powerset.h
new file mode 100644
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--- /dev/null
+++ b/gcc/ch/runtime/powerset.h
@@ -0,0 +1,106 @@
+/* Common macros for POWERSET runtime actions for CHILL.
+   Copyright (C) 1992,1993 Free Software Foundation, Inc.
+   Author: Wilfried Moser, et al
+
+This file is part of GNU CC.
+
+GNU CC 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, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifndef _POWERSET_H
+#define _POWERSET_H
+
+#define USE_CHARS
+
+#ifdef USE_CHARS
+
+#define SET_WORD unsigned char
+#define SET_CHAR  unsigned char
+#define SET_SHORT unsigned char
+
+#else
+
+#ifndef SET_WORD
+#define SET_WORD unsigned int
+#endif
+#define SET_CHAR  unsigned char
+#define SET_SHORT unsigned short
+#endif
+
+#define SET_WORD_SIZE (BITS_PER_UNIT * sizeof (SET_WORD))
+#define SET_SHORT_SIZE (BITS_PER_UNIT * sizeof (SET_SHORT))
+#define SET_CHAR_SIZE BITS_PER_UNIT
+
+/* Powersets and bit strings are stored as arrays of SET_WORD.
+   if they are a word or longer.  Powersets and bit strings whic
+   fit in a byte or short are stored that way by the compiler.
+
+   The order of the bits follows native bit order:
+   If BITS_BIG_ENDIAN, bit 0 is the most significant bit (i.e. 0x80..00);
+   otherwise, bit 0 is the least significant bit (i.e. 0x1).
+
+   MASK_UNUSED_BITS masks out unused bits in powersets and bitstrings.
+   GET_BIT_IN_WORD(W,B) yields 1 (or 0) if the B'th bit if W is set (cleared).
+*/
+
+#if BITS_BIG_ENDIAN
+#define GET_BIT_IN_WORD(w,b) (((w) >> (SET_WORD_SIZE - 1 - (b))) & 1)
+#define GET_BIT_IN_SHORT(w,b) (((w) >> (SET_SHORT_SIZE - 1 - (b))) & 1)
+#define GET_BIT_IN_CHAR(w,b) (((w) >> (SET_CHAR_SIZE - 1 - (b))) & 1)
+
+#define SET_BIT_IN_WORD(w,b) ((w) |= 1 << ((SET_WORD_SIZE) - 1 - (b)))
+#define SET_BIT_IN_SHORT(w,b) ((w) |= 1 << ((SET_SHORT_SIZE) - 1 - (b)))
+#define SET_BIT_IN_CHAR(w,b) ((w) |= 1 << ((SET_CHAR_SIZE) - 1 - (b)))
+
+#define CLEAR_BIT_IN_WORD(w,b) ((w) &= ~(1 << ((SET_WORD_SIZE) - 1 - (b))))
+#define CLEAR_BIT_IN_SHORT(w,b) ((w) &= ~(1 << ((SET_SHORT_SIZE) - 1 - (b))))
+#define CLEAR_BIT_IN_CHAR(w,b) ((w) &= ~(1 << ((SET_CHAR_SIZE) - 1 - (b))))
+#define MASK_UNUSED_WORD_BITS(p,b)		   \
+{ if (b) *(p) &= (~0) << (SET_WORD_SIZE - (b)); }
+#define MASK_UNUSED_SHORT_BITS(p,b)		   \
+{ if (b) *(p) &= (~0) << (SET_SHORT_SIZE - (b)); }
+#define MASK_UNUSED_CHAR_BITS(p,b)                 \
+{ if (b) *(p) &= (~0) << (SET_CHAR_SIZE - (b)); }
+
+#else /* !BITS_BIG_ENDIAN */
+
+#define GET_BIT_IN_WORD(w,b) (((w) >> (b)) & 1)
+#define GET_BIT_IN_SHORT(w,b) GET_BIT_IN_WORD(w,b)
+#define GET_BIT_IN_CHAR(w,b) GET_BIT_IN_WORD(w,b)
+
+#define SET_BIT_IN_WORD(w,b) ((w) |= 1 << (b))
+#define SET_BIT_IN_SHORT(w,b) SET_BIT_IN_WORD(w,b)
+#define SET_BIT_IN_CHAR(w,b) SET_BIT_IN_WORD(w,b)
+
+#define CLEAR_BIT_IN_WORD(w,b) ((w) &= ~(1 << (b)))
+#define CLEAR_BIT_IN_SHORT(w,b) CLEAR_BIT_IN_WORD(w,b)
+#define CLEAR_BIT_IN_CHAR(w,b) CLEAR_BIT_IN_WORD(w,b)
+
+#define MASK_UNUSED_WORD_BITS(p,b)  \
+{ if (b) *(p) &= ~((~0) << (b)); }
+#define MASK_UNUSED_SHORT_BITS(p,b) MASK_UNUSED_WORD_BITS(p,b)
+#define MASK_UNUSED_CHAR_BITS(p,b) MASK_UNUSED_WORD_BITS(p,b)
+
+#endif
+
+
+/* Number of words needed for a bitstring/powerset of size BITLENGTH.
+   This definition handles the (BITLENGTH==0) by yielding 0. */
+
+#define BITS_TO_WORDS(BITLENGTH) \
+  (((BITLENGTH) + (SET_WORD_SIZE-1)) / SET_WORD_SIZE)
+#define BITS_TO_CHARS(BITLENGTH) \
+  (((BITLENGTH) + (SET_CHAR_SIZE-1)) / SET_CHAR_SIZE)
+
+#endif