mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-14 10:18:02 +00:00
e75ffde09e
You can now build Cosmopolitan with Clang:
make -j8 MODE=llvm
o/llvm/examples/hello.com
The assembler and linker code is now friendly to LLVM too.
So it's not needed to configure Clang to use binutils under
the hood. If you love LLVM then you can now use pure LLVM.
42 lines
1.9 KiB
C
42 lines
1.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 1995-2006, 2010, 2011, 2012, 2016 Mark Adler │
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│ Use of this source code is governed by the BSD-style licenses that can │
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│ be found in the third_party/zlib/LICENSE file. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/bits/weaken.h"
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#include "libc/dce.h"
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#include "libc/nexgen32e/x86feature.h"
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#include "libc/str/str.h"
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#include "third_party/zlib/deflate.h"
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#include "third_party/zlib/internal.h"
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#include "third_party/zlib/zutil.h"
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asm(".ident\t\"\\n\\n\
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zlib (zlib License)\\n\
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Copyright 1995-2017 Jean-loup Gailly and Mark Adler\"");
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asm(".include \"libc/disclaimer.inc\"");
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void crc_reset(struct DeflateState *const s) {
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if (X86_HAVE(PCLMUL) && weaken(crc_fold_init)) {
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weaken(crc_fold_init)(s);
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return;
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}
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s->strm->adler = crc32(0L, Z_NULL, 0);
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}
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void crc_finalize(struct DeflateState *const s) {
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if (X86_HAVE(PCLMUL) && weaken(crc_fold_512to32)) {
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s->strm->adler = weaken(crc_fold_512to32)(s);
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}
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}
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void copy_with_crc(z_streamp strm, Bytef *dst, long size) {
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if (X86_HAVE(PCLMUL) && weaken(crc_fold_copy)) {
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weaken(crc_fold_copy)(strm->state, dst, strm->next_in, size);
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return;
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}
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memcpy(dst, strm->next_in, size);
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strm->adler = crc32(strm->adler, dst, size);
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}
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