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git://sourceware.org/git/valgrind.git
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3392155359
- Update COPYING and VEX/LICENSE.GPL to version 3. - Update README, NEWS, docs/manual license and contributing text. - Update file headers to say either version 3 of the License, or (at your option) any later version. - Leave tests and perf file headers as is, unless the code is derived from Valgrind/VEX. - Leave valgrind.h, cachegrind.h, callgrind.h, drd.h, helgrind.h, memcheck.h and dhat.h Hybrid-BSD licensed.
320 lines
7.3 KiB
C
320 lines
7.3 KiB
C
/* -*- mode: C; c-basic-offset: 3; -*- */
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/*--------------------------------------------------------------------*/
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/*--- Compiler specific stuff. m_compiler.c ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, a dynamic binary instrumentation
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framework.
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Copyright (C) 2014-2017 Florian Krohm
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florian@eich-krohm.de
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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The GNU General Public License is contained in the file COPYING.
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*/
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/* Currently, this file provides definitions for builtins that not all
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compilers or compiler versions provide.
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Missing builtins are rare. Therefore, no attempt has been made to
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provide efficient implementations.
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*/
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#include "config.h"
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#include "pub_core_basics.h"
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#include "pub_core_libcbase.h"
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#include "pub_core_libcassert.h"
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#include "pub_core_debuglog.h"
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#ifndef HAVE_BUILTIN_POPCOUT
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/* From the GCC documentation:
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Returns the number of 1-bits in x. */
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UInt
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__builtin_popcount(UInt x)
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{
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UInt i, count = 0;
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for (i = 0; i < 32; ++i) {
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count += x & 1;
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x >>= 1;
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}
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return count;
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}
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UInt
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__builtin_popcountll(ULong x)
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{
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UInt i, count = 0;
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for (i = 0; i < 64; ++i) {
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count += x & 1;
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x >>= 1;
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}
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return count;
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}
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#endif
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#ifndef HAVE_BUILTIN_CLZ
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/* From the GCC documentation:
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Returns the number of leading 0-bits in x, starting at the most
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significant position. If x is 0, the result is undefined. */
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UInt
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__builtin_clz(UInt x)
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{
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UInt count = 32;
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UInt y;
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y = x >> 16; if (y != 0) { count -= 16; x = y; }
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y = x >> 8; if (y != 0) { count -= 8; x = y; }
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y = x >> 4; if (y != 0) { count -= 4; x = y; }
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y = x >> 2; if (y != 0) { count -= 2; x = y; }
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y = x >> 1; if (y != 0) return count - 2;
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return count - x;
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}
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UInt
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__builtin_clzll(ULong x)
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{
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UInt count = 64;
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ULong y;
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y = x >> 32; if (y != 0) { count -= 32; x = y; }
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y = x >> 16; if (y != 0) { count -= 16; x = y; }
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y = x >> 8; if (y != 0) { count -= 8; x = y; }
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y = x >> 4; if (y != 0) { count -= 4; x = y; }
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y = x >> 2; if (y != 0) { count -= 2; x = y; }
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y = x >> 1; if (y != 0) return count - 2;
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return count - x;
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}
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#endif
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#ifndef HAVE_BUILTIN_CTZ
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/* From the GCC documentation:
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Returns the number of trailing 0-bits in x, starting at the least
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significant bit position. If x is 0, the result is undefined. */
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UInt
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__builtin_ctz(UInt x)
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{
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UInt i, count = 0;
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for (i = 0; i < 32; ++i) {
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if (x & 1) break;
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++count;
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x >>= 1;
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}
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return count;
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}
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UInt
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__builtin_ctzll(ULong x)
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{
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UInt i, count = 0;
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for (i = 0; i < 64; ++i) {
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if (x & 1) break;
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++count;
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x >>= 1;
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}
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return count;
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}
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#endif
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#ifdef __INTEL_COMPILER
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/* Provide certain functions Intel's ICC compiler expects to be defined. */
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void *
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__intel_memcpy(void *dest, const void *src, SizeT sz)
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{
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return VG_(memcpy)( dest, src, sz );
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}
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void *
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__intel_mic_avx512f_memcpy(void *dest, const void *src, SizeT sz)
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{
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return VG_(memcpy)( dest, src, sz );
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}
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void *
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__intel_new_memcpy(void *dest, const void *src, SizeT sz)
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{
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return VG_(memcpy)( dest, src, sz );
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}
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void *
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__intel_ssse3_memcpy(void *dest, const void *src, SizeT sz)
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{
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return VG_(memcpy)( dest, src, sz );
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}
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void *
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__intel_ssse3_rep_memcpy(void *dest, const void *src, SizeT sz)
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{
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return VG_(memcpy)( dest, src, sz );
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}
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void *
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_intel_fast_memcpy(void *dest, const void *src, SizeT sz)
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{
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return VG_(memcpy)( dest, src, sz );
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}
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void *
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__intel_lrb_memcpy(void *dest, const void *src, SizeT sz)
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{
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return VG_(memcpy)( dest, src, sz );
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}
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void *
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__intel_memset(void *dest, int value, SizeT num)
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{
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return VG_(memset)( dest, value, num );
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}
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void *
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__intel_new_memset(void *dest, int value, SizeT num)
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{
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return VG_(memset)( dest, value, num );
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}
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void *
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__intel_mic_avx512f_memset(void *dest, int value, SizeT num)
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{
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return VG_(memset)( dest, value, num );
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}
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void *
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__intel_lrb_memset(void *dest, int value, SizeT num)
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{
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return VG_(memset)( dest, value, num );
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}
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void *
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_intel_fast_memset(void *dest, int value, SizeT num)
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{
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return VG_(memset)( dest, value, num );
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}
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#endif
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/*====================================================================*/
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/*=== gcc -fsanitize=undefined helper function support ===*/
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/*====================================================================*/
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void __ubsan_handle_type_mismatch ( void );
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void __ubsan_handle_type_mismatch ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_type_mismatch_v1 ( void );
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void __ubsan_handle_type_mismatch_v1 ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_mul_overflow ( void );
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void __ubsan_handle_mul_overflow ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_add_overflow ( void );
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void __ubsan_handle_add_overflow ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_sub_overflow ( void );
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void __ubsan_handle_sub_overflow ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_divrem_overflow ( void );
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void __ubsan_handle_divrem_overflow ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_negate_overflow ( void );
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void __ubsan_handle_negate_overflow ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_pointer_overflow ( void );
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void __ubsan_handle_pointer_overflow ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_out_of_bounds ( void );
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void __ubsan_handle_out_of_bounds ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_shift_out_of_bounds ( void );
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void __ubsan_handle_shift_out_of_bounds ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_vla_bound_not_positive ( void );
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void __ubsan_handle_vla_bound_not_positive ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_nonnull_arg ( void );
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void __ubsan_handle_nonnull_arg ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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void __ubsan_handle_invalid_builtin ( void );
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void __ubsan_handle_invalid_builtin ( void )
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{
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VG_(debugLog)(0, "main:ubsan", "In %s", __func__);
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vg_assert(0);
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}
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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