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Update comments in config_align.h

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This commit is contained in:
Jeffrey Walton 2020-08-06 21:11:34 -04:00
parent 47b38d8a6b
commit 59ba8790dc
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GPG Key ID: B36AB348921B1838
2 changed files with 24 additions and 18 deletions
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38
config_align.h
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@ -15,12 +15,18 @@
#ifndef CRYPTOPP_CONFIG_ALIGN_H
#define CRYPTOPP_CONFIG_ALIGN_H
#include "config_cpu.h"
#include "config_cxx.h"
#include "config_ver.h"
#include "config_asm.h" // CRYPTOPP_DISABLE_ASM
#include "config_cpu.h" // X86, X32, X64, ARM32, ARM64, etc
#include "config_cxx.h" // CRYPTOPP_CXX11_ALIGNAS
#include "config_ver.h" // Compiler versions
// Nearly all Intel's and AMD's have SSE. Enable it independent of SSE ASM and intrinscs
#if (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_PPC32 || CRYPTOPP_BOOL_PPC64) && !defined(CRYPTOPP_DISABLE_ASM)
// Nearly all Intel's and AMD's have SSE. Enable it independent of SSE ASM and intrinscs.
// ARM NEON and ARMv8 ASIMD only need natural alignment of an element in the vector.
// Altivec through POWER7 need vector alignment. POWER8 and POWER9 relax the requirement.
#if defined(CRYPTOPP_DISABLE_ASM)
#define CRYPTOPP_BOOL_ALIGN16 0
#elif (CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X64 || \
CRYPTOPP_BOOL_PPC32 || CRYPTOPP_BOOL_PPC64)
#define CRYPTOPP_BOOL_ALIGN16 1
#else
#define CRYPTOPP_BOOL_ALIGN16 0
@ -44,18 +50,16 @@
// IBM XL C/C++ alignment modifier per Optimization Guide, pp. 19-20.
// __IBM_ATTRIBUTES per XLC 12.1 AIX Compiler Manual, p. 473.
// CRYPTOPP_ALIGN_DATA may not be reliable on AIX.
#ifndef CRYPTOPP_ALIGN_DATA
#if defined(CRYPTOPP_CXX11_ALIGNAS)
#define CRYPTOPP_ALIGN_DATA(x) alignas(x)
#elif defined(_MSC_VER)
#define CRYPTOPP_ALIGN_DATA(x) __declspec(align(x))
#elif defined(__GNUC__) || defined(__clang__) || (__SUNPRO_CC >= 0x5100)
#define CRYPTOPP_ALIGN_DATA(x) __attribute__((aligned(x)))
#elif defined(__xlc__) || defined(__xlC__)
#define CRYPTOPP_ALIGN_DATA(x) __attribute__((aligned(x)))
#else
#define CRYPTOPP_ALIGN_DATA(x)
#endif
#if defined(CRYPTOPP_CXX11_ALIGNAS)
#define CRYPTOPP_ALIGN_DATA(x) alignas(x)
#elif defined(_MSC_VER)
#define CRYPTOPP_ALIGN_DATA(x) __declspec(align(x))
#elif defined(__GNUC__) || defined(__clang__) || (__SUNPRO_CC >= 0x5100)
#define CRYPTOPP_ALIGN_DATA(x) __attribute__((aligned(x)))
#elif defined(__xlc__) || defined(__xlC__)
#define CRYPTOPP_ALIGN_DATA(x) __attribute__((aligned(x)))
#else
#define CRYPTOPP_ALIGN_DATA(x)
#endif
#endif // CRYPTOPP_CONFIG_ALIGN_H

4
config_ver.h
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@ -26,7 +26,7 @@
// Compiler version macros
#ifdef __GNUC__
#if defined(__GNUC__)
# define CRYPTOPP_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#endif
@ -37,8 +37,10 @@
// Apple and LLVM's Clang. Apple Clang version 7.0 roughly equals LLVM Clang version 3.7
// Also see https://gist.github.com/yamaya/2924292
#if defined(__clang__) && defined(__apple_build_version__)
# undef CRYPTOPP_GCC_VERSION
# define CRYPTOPP_APPLE_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
#elif defined(__clang__)
# undef CRYPTOPP_GCC_VERSION
# define CRYPTOPP_LLVM_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
#endif