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103 lines
4.2 KiB
103 lines
4.2 KiB
// config_cpu.h - written and placed in public domain by Jeffrey Walton |
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// the bits that make up this source file are from the |
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// library's monolithic config.h. |
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/// \file config_cpu.h |
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/// \brief Library configuration file |
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/// \details <tt>config.h</tt> was split into components in May 2019 to better |
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/// integrate with Autoconf and its feature tests. The splitting occured so |
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/// users could continue to include <tt>config.h</tt> while allowing Autoconf |
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/// to write new <tt>config_asm.h</tt> and new <tt>config_cxx.h</tt> using |
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/// its feature tests. |
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/// \sa <A HREF="https://github.com/weidai11/cryptopp/issues/835">Issue 835</A> |
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/// <A HREF="https://sourceforge.net/p/predef/wiki/Architectures/">Sourceforge |
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/// Pre-defined Compiler Macros</A> |
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/// \since Crypto++ 8.3 |
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#ifndef CRYPTOPP_CONFIG_CPU_H |
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#define CRYPTOPP_CONFIG_CPU_H |
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#include "config_ver.h" |
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#if (defined(__ILP32__) || defined(_ILP32)) && defined(__x86_64__) |
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#define CRYPTOPP_BOOL_X32 1 |
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#elif (defined(_M_X64) || defined(__x86_64__)) |
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#define CRYPTOPP_BOOL_X64 1 |
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#elif (defined(_M_IX86) || defined(__i386__) || defined(__i386) || defined(_X86_) || defined(__I86__) || defined(__INTEL__)) |
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#define CRYPTOPP_BOOL_X86 1 |
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#endif |
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// Microsoft added ARM64 define December 2017. |
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#if defined(__arm64__) || defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64) |
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#define CRYPTOPP_BOOL_ARMV8 1 |
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#endif |
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#if defined(__arm64__) || defined(__aarch64__) || defined(_M_ARM64) |
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#define CRYPTOPP_BOOL_ARM64 1 |
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#elif defined(__arm__) || defined(_M_ARM) |
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#define CRYPTOPP_BOOL_ARM32 1 |
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#endif |
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// And PowerPC. |
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#if defined(__ppc64__) || defined(__powerpc64__) || defined(__PPC64__) || defined(_ARCH_PPC64) |
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#define CRYPTOPP_BOOL_PPC64 1 |
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#elif defined(__powerpc__) || defined(__ppc__) || defined(__PPC__) || defined(_ARCH_PPC) |
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#define CRYPTOPP_BOOL_PPC32 1 |
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#endif |
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// And MIPS. TODO: finish these defines |
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#if defined(__mips64__) |
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#define CRYPTOPP_BOOL_MIPS64 1 |
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#elif defined(__mips__) |
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#define CRYPTOPP_BOOL_MIPS32 1 |
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#endif |
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// And SPARC. |
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#if defined(__sparc64__) || defined(__sparc64) || defined(__sparcv9) || defined(__sparc_v9__) |
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#define CRYPTOPP_BOOL_SPARC64 1 |
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#elif defined(__sparc__) || defined(__sparc) || defined(__sparcv8) || defined(__sparc_v8__) |
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#define CRYPTOPP_BOOL_SPARC32 1 |
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#endif |
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// This should be a lower bound on the L1 cache line size. |
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// It's used for defense against timing attacks. |
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#ifndef CRYPTOPP_L1_CACHE_LINE_SIZE |
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#if defined(CRYPTOPP_BOOL_X32) || defined(CRYPTOPP_BOOL_X64) || defined(CRYPTOPP_BOOL_ARMV8) || \ |
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defined(CRYPTOPP_BOOL_PPC64) || defined(CRYPTOPP_BOOL_MIPS64) || defined(CRYPTOPP_BOOL_SPARC64) |
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#define CRYPTOPP_L1_CACHE_LINE_SIZE 64 |
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#else |
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// L1 cache line size is 32 on Pentium III and earlier |
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#define CRYPTOPP_L1_CACHE_LINE_SIZE 32 |
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#endif |
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#endif |
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// The section attribute attempts to initialize CPU flags to avoid Valgrind findings above -O1 |
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#if ((defined(__MACH__) && defined(__APPLE__)) && ((CRYPTOPP_LLVM_CLANG_VERSION >= 30600) || (CRYPTOPP_APPLE_CLANG_VERSION >= 70100) || (CRYPTOPP_GCC_VERSION >= 40300))) |
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#define CRYPTOPP_SECTION_INIT __attribute__((section ("__DATA,__data"))) |
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#elif (defined(__ELF__) && (CRYPTOPP_GCC_VERSION >= 40300)) |
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#define CRYPTOPP_SECTION_INIT __attribute__((section ("nocommon"))) |
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#elif defined(__ELF__) && (defined(__xlC__) || defined(__ibmxl__)) |
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#define CRYPTOPP_SECTION_INIT __attribute__((section ("nocommon"))) |
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#else |
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#define CRYPTOPP_SECTION_INIT |
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#endif |
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// How to disable CPU feature probing. We determine machine |
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// capabilities by performing an os/platform *query* first, |
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// like getauxv(). If the *query* fails, we move onto a |
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// cpu *probe*. The cpu *probe* tries to exeute an instruction |
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// and then catches a SIGILL on Linux or the exception |
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// EXCEPTION_ILLEGAL_INSTRUCTION on Windows. Some OSes |
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// fail to hangle a SIGILL gracefully, like Apple OSes. Apple |
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// machines corrupt memory and variables around the probe. |
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#if defined(__APPLE__) |
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#define CRYPTOPP_NO_CPU_FEATURE_PROBES 1 |
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#endif |
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// Flavor of inline assembly language |
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#if defined(_MSC_VER) || defined(__BORLANDC__) |
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#define CRYPTOPP_MS_STYLE_INLINE_ASSEMBLY 1 |
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#else |
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#define CRYPTOPP_GNU_STYLE_INLINE_ASSEMBLY 1 |
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#endif |
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#endif
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