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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
149 lines
3.3 KiB
C
149 lines
3.3 KiB
C
/* fmtno.c: NULL OBJECT FORMAT IMPLEMENTATION
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*
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* $Id$
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* Copyright (c) 2001-2020 Ravenbrook Limited. See end of file for license.
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*
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* .readership: MPS developers
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*/
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#include "fmtno.h"
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#include "mps.h"
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#define notreached() assert(0)
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#define unused(param) ((void)param)
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#define ALIGN sizeof(mps_word_t)
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/* Functions for the null format. */
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mps_res_t no_scan(mps_ss_t mps_ss,
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mps_addr_t base,
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mps_addr_t limit)
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{
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unused(mps_ss); unused(base); unused(limit);
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notreached();
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return 0;
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}
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mps_addr_t no_skip(mps_addr_t object)
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{
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unused(object);
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notreached();
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return 0;
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}
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void no_copy(mps_addr_t old,
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mps_addr_t new)
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{
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unused(old); unused(new);
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notreached();
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}
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void no_fwd(mps_addr_t old,
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mps_addr_t new)
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{
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unused(old); unused(new);
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notreached();
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}
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mps_addr_t no_isfwd(mps_addr_t object)
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{
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unused(object);
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notreached();
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return 0;
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}
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void no_pad(mps_addr_t addr,
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size_t size)
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{
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unused(addr); unused(size);
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notreached();
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}
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mps_addr_t no_class(mps_addr_t obj)
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{
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unused(obj);
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notreached();
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return 0;
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}
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/* The null format structures */
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static struct mps_fmt_A_s no_fmt_A_s =
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{
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ALIGN,
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no_scan,
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no_skip,
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no_copy,
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no_fwd,
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no_isfwd,
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no_pad
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};
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static struct mps_fmt_B_s no_fmt_B_s =
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{
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ALIGN,
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no_scan,
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no_skip,
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no_copy,
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no_fwd,
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no_isfwd,
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no_pad,
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no_class
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};
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/* Functions returning the null format structures. */
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mps_fmt_A_s *no_fmt_A(void)
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{
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return &no_fmt_A_s;
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}
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mps_fmt_B_s *no_fmt_B(void)
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{
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return &no_fmt_B_s;
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}
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/* Format variety-independent version that picks the right format
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* variety and creates it. */
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mps_res_t no_fmt(mps_fmt_t *mps_fmt_o, mps_arena_t arena)
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{
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return mps_fmt_create_B(mps_fmt_o, arena, no_fmt_B());
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}
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/* C. COPYRIGHT AND LICENSE
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*
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* Copyright (C) 2001-2020 Ravenbrook Limited <http://www.ravenbrook.com/>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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