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8bf1540cc2
Now that we require glibc 2.17 or later, we no longer need to check for different return types in fdelt_chk. It was changed from unsigned long int to long int in glibc 2.16 . See this commit: https://sourceware.org/git/?p=glibc.git;a=commit;h=ceb9e56b3d1f8c1922e0526c2e841373843460e2 and related issue: https://sourceware.org/bugzilla/show_bug.cgi?id=14210.
64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
// Copyright (c) 2009-2018 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#if defined(HAVE_CONFIG_H)
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#include <config/bitcoin-config.h>
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#endif
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#include <cstddef>
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#include <cstdint>
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// Prior to GLIBC_2.14, memcpy was aliased to memmove.
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extern "C" void* memmove(void* a, const void* b, size_t c);
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extern "C" void* memcpy(void* a, const void* b, size_t c)
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{
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return memmove(a, b, c);
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}
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#if defined(__i386__) || defined(__arm__)
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extern "C" int64_t __udivmoddi4(uint64_t u, uint64_t v, uint64_t* rp);
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extern "C" int64_t __wrap___divmoddi4(int64_t u, int64_t v, int64_t* rp)
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{
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int32_t c1 = 0, c2 = 0;
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int64_t uu = u, vv = v;
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int64_t w;
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int64_t r;
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if (uu < 0) {
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c1 = ~c1, c2 = ~c2, uu = -uu;
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}
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if (vv < 0) {
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c1 = ~c1, vv = -vv;
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}
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w = __udivmoddi4(uu, vv, (uint64_t*)&r);
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if (c1)
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w = -w;
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if (c2)
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r = -r;
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*rp = r;
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return w;
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}
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#endif
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extern "C" float log2f_old(float x);
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#ifdef __i386__
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__asm(".symver log2f_old,log2f@GLIBC_2.1");
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#elif defined(__amd64__)
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__asm(".symver log2f_old,log2f@GLIBC_2.2.5");
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#elif defined(__arm__)
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__asm(".symver log2f_old,log2f@GLIBC_2.4");
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#elif defined(__aarch64__)
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__asm(".symver log2f_old,log2f@GLIBC_2.17");
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#elif defined(__riscv)
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__asm(".symver log2f_old,log2f@GLIBC_2.27");
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#endif
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extern "C" float __wrap_log2f(float x)
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{
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return log2f_old(x);
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}
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