mirror of
git://git.sv.gnu.org/emacs.git
synced 2026-01-21 12:03:55 -08:00
1d00afac81
Publish minor changes to readme and configure files in main directory. Main directory and code directory licence texts are now fully updated. Copied from Perforce Change: 196994
80 lines
3.3 KiB
C
80 lines
3.3 KiB
C
/* nailboard.h: NAILBOARD INTERFACE
|
|
*
|
|
* $Id$
|
|
* Copyright (c) 2014-2020 Ravenbrook Limited. See end of file for license.
|
|
*
|
|
* .source: <design/nailboard>.
|
|
*/
|
|
|
|
#ifndef nailboard_h
|
|
#define nailboard_h
|
|
|
|
#include "mpmtypes.h"
|
|
#include "range.h"
|
|
|
|
typedef struct NailboardStruct *Nailboard;
|
|
|
|
/* NOTE: we could reduce the size of this structure using bitfields.
|
|
* levels can be at most MPS_WORD_WIDTH / LEVEL_SHIFT + 1, which is 11
|
|
* on 64-bit, so it would fit in 4 bits. (Or it could be recalculated
|
|
* from range each time it's needed.) alignShift is at most
|
|
* MPS_WORD_SHIFT so would fit in 3 bits. (Or it could be supplied in
|
|
* each function call by the owner.) newNails would fit in 1 bit.
|
|
*/
|
|
typedef struct NailboardStruct {
|
|
Sig sig;
|
|
RangeStruct range; /* range of addresses covered by nailboard */
|
|
Count levels; /* number of levels */
|
|
Shift alignShift; /* shift due to address alignment */
|
|
Bool newNails; /* set to TRUE if a new nail is set */
|
|
BT level[1]; /* bit tables for each level */
|
|
} NailboardStruct;
|
|
|
|
#define NailboardSig ((Sig)0x5194A17B) /* SIGnature NAILBoard */
|
|
|
|
#define NailboardClearNewNails(board) ((board)->newNails = FALSE)
|
|
#define NailboardNewNails(board) RVALUE((board)->newNails)
|
|
|
|
extern Bool NailboardCheck(Nailboard board);
|
|
extern Res NailboardCreate(Nailboard *boardReturn, Arena arena, Align alignment, Addr base, Addr limit);
|
|
extern void NailboardDestroy(Nailboard board, Arena arena);
|
|
extern void (NailboardClearNewNails)(Nailboard board);
|
|
extern Bool (NailboardNewNails)(Nailboard board);
|
|
extern Bool NailboardGet(Nailboard board, Addr addr);
|
|
extern Bool NailboardSet(Nailboard board, Addr addr);
|
|
extern void NailboardSetRange(Nailboard board, Addr base, Addr limit);
|
|
extern Bool NailboardIsSetRange(Nailboard board, Addr base, Addr limit);
|
|
extern Bool NailboardIsResRange(Nailboard board, Addr base, Addr limit);
|
|
extern Res NailboardDescribe(Nailboard board, mps_lib_FILE *stream, Count depth);
|
|
|
|
#endif /* nailboard.h */
|
|
|
|
|
|
/* C. COPYRIGHT AND LICENSE
|
|
*
|
|
* Copyright (C) 2014-2020 Ravenbrook Limited <http://www.ravenbrook.com/>.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
|
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|