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https://github.com/netwide-assembler/nasm.git
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df4555d68b
The very simple compression scheme used for the builtin macro sets no longer works adequately, and in fact it generates incorrect output now. Drop the whole idea of an ad hoc compression scheme and just use zlib. For the case where there is no system zlib available, include a (subset of) the zlib distribution. The configure script can be set to force this included zlib if desired (e.g. for testing.) Unfortunately this turned out to be a pretty painful can of worms in terms of complexity. On the other hand having zlib available might be useful at some point in the future. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2025 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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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
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* conditions are met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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/*
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* This needs to be in a separate file because zlib.h conflicts
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* with opflags.h.
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*/
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#include "compiler.h"
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#include "zlib.h"
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#include "macros.h"
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#include "nasmlib.h"
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#include "error.h"
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/*
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* read line from standard macros set,
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* if there no more left -- return NULL
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*/
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static void *nasm_z_alloc(void *opaque, unsigned int items, unsigned int size)
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{
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(void)opaque;
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return nasm_calloc(items, size);
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}
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static void nasm_z_free(void *opaque, void *ptr)
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{
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(void)opaque;
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nasm_free(ptr);
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}
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char *uncompress_stdmac(const macros_t *sm)
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{
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z_stream zs;
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void *buf = nasm_malloc(sm->dsize);
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nasm_zero(zs);
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zs.next_in = (void *)sm->zdata;
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zs.avail_in = sm->zsize;
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zs.next_out = buf;
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zs.avail_out = sm->dsize;
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zs.zalloc = nasm_z_alloc;
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zs.zfree = nasm_z_free;
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if (inflateInit2(&zs, 0) != Z_OK)
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panic();
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if (inflate(&zs, Z_FINISH) != Z_STREAM_END)
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panic();
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inflateEnd(&zs);
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return buf;
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}
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