mirror of
https://github.com/ZDoom/gzdoom.git
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335 lines
7.5 KiB
C
335 lines
7.5 KiB
C
/* CpuArch.h -- CPU specific code
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2017-06-30 : Igor Pavlov : Public domain */
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#ifndef __CPU_ARCH_H
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#define __CPU_ARCH_H
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#include "7zTypes.h"
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EXTERN_C_BEGIN
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/*
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MY_CPU_LE means that CPU is LITTLE ENDIAN.
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MY_CPU_BE means that CPU is BIG ENDIAN.
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If MY_CPU_LE and MY_CPU_BE are not defined, we don't know about ENDIANNESS of platform.
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MY_CPU_LE_UNALIGN means that CPU is LITTLE ENDIAN and CPU supports unaligned memory accesses.
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*/
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#if defined(_M_X64) \
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|| defined(_M_AMD64) \
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|| defined(__x86_64__) \
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|| defined(__AMD64__) \
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|| defined(__amd64__)
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#define MY_CPU_AMD64
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#ifdef __ILP32__
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#define MY_CPU_NAME "x32"
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#else
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#define MY_CPU_NAME "x64"
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#endif
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#define MY_CPU_64BIT
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#endif
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#if defined(_M_IX86) \
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|| defined(__i386__)
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#define MY_CPU_X86
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#define MY_CPU_NAME "x86"
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#define MY_CPU_32BIT
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#endif
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#if defined(_M_ARM64) \
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|| defined(__AARCH64EL__) \
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|| defined(__AARCH64EB__) \
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|| defined(__aarch64__)
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#define MY_CPU_ARM64
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#define MY_CPU_NAME "arm64"
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#define MY_CPU_64BIT
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#endif
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#if defined(_M_ARM) \
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|| defined(_M_ARM_NT) \
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|| defined(_M_ARMT) \
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|| defined(__arm__) \
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|| defined(__thumb__) \
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|| defined(__ARMEL__) \
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|| defined(__ARMEB__) \
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|| defined(__THUMBEL__) \
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|| defined(__THUMBEB__)
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#define MY_CPU_ARM
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#define MY_CPU_NAME "arm"
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#define MY_CPU_32BIT
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#endif
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#if defined(_M_IA64) \
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|| defined(__ia64__)
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#define MY_CPU_IA64
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#define MY_CPU_NAME "ia64"
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#define MY_CPU_64BIT
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#endif
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#if defined(__mips64) \
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|| defined(__mips64__) \
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|| (defined(__mips) && (__mips == 64 || __mips == 4 || __mips == 3))
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#define MY_CPU_NAME "mips64"
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#define MY_CPU_64BIT
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#elif defined(__mips__)
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#define MY_CPU_NAME "mips"
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/* #define MY_CPU_32BIT */
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#endif
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#if defined(__ppc64__) \
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|| defined(__powerpc64__)
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#ifdef __ILP32__
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#define MY_CPU_NAME "ppc64-32"
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#else
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#define MY_CPU_NAME "ppc64"
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#endif
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#define MY_CPU_64BIT
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#elif defined(__ppc__) \
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|| defined(__powerpc__)
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#define MY_CPU_NAME "ppc"
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#define MY_CPU_32BIT
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#endif
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#if defined(__sparc64__)
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#define MY_CPU_NAME "sparc64"
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#define MY_CPU_64BIT
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#elif defined(__sparc__)
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#define MY_CPU_NAME "sparc"
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/* #define MY_CPU_32BIT */
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#endif
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#if defined(MY_CPU_X86) || defined(MY_CPU_AMD64)
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#define MY_CPU_X86_OR_AMD64
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#endif
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#ifdef _WIN32
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#ifdef MY_CPU_ARM
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#define MY_CPU_ARM_LE
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#endif
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#ifdef MY_CPU_ARM64
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#define MY_CPU_ARM64_LE
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#endif
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#ifdef _M_IA64
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#define MY_CPU_IA64_LE
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#endif
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#endif
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#if defined(MY_CPU_X86_OR_AMD64) \
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|| defined(MY_CPU_ARM_LE) \
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|| defined(MY_CPU_ARM64_LE) \
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|| defined(MY_CPU_IA64_LE) \
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|| defined(__LITTLE_ENDIAN__) \
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|| defined(__ARMEL__) \
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|| defined(__THUMBEL__) \
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|| defined(__AARCH64EL__) \
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|| defined(__MIPSEL__) \
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|| defined(__MIPSEL) \
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|| defined(_MIPSEL) \
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|| defined(__BFIN__) \
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|| (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
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#define MY_CPU_LE
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#endif
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#if defined(__BIG_ENDIAN__) \
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|| defined(__ARMEB__) \
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|| defined(__THUMBEB__) \
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|| defined(__AARCH64EB__) \
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|| defined(__MIPSEB__) \
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|| defined(__MIPSEB) \
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|| defined(_MIPSEB) \
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|| defined(__m68k__) \
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|| defined(__s390__) \
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|| defined(__s390x__) \
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|| defined(__zarch__) \
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|| (defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__))
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#define MY_CPU_BE
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#endif
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#if defined(MY_CPU_LE) && defined(MY_CPU_BE)
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#error Stop_Compiling_Bad_Endian
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#endif
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#if defined(MY_CPU_32BIT) && defined(MY_CPU_64BIT)
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#error Stop_Compiling_Bad_32_64_BIT
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#endif
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#ifndef MY_CPU_NAME
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#ifdef MY_CPU_LE
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#define MY_CPU_NAME "LE"
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#elif MY_CPU_BE
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#define MY_CPU_NAME "BE"
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#else
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/*
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#define MY_CPU_NAME ""
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*/
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#endif
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#endif
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#ifdef MY_CPU_LE
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#if defined(MY_CPU_X86_OR_AMD64) \
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|| defined(MY_CPU_ARM64) \
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|| defined(__ARM_FEATURE_UNALIGNED)
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#define MY_CPU_LE_UNALIGN
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#endif
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#endif
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#ifdef MY_CPU_LE_UNALIGN
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#define GetUi16(p) (*(const UInt16 *)(const void *)(p))
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#define GetUi32(p) (*(const UInt32 *)(const void *)(p))
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#define GetUi64(p) (*(const UInt64 *)(const void *)(p))
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#define SetUi16(p, v) { *(UInt16 *)(p) = (v); }
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#define SetUi32(p, v) { *(UInt32 *)(p) = (v); }
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#define SetUi64(p, v) { *(UInt64 *)(p) = (v); }
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#else
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#define GetUi16(p) ( (UInt16) ( \
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((const Byte *)(p))[0] | \
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((UInt16)((const Byte *)(p))[1] << 8) ))
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#define GetUi32(p) ( \
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((const Byte *)(p))[0] | \
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((UInt32)((const Byte *)(p))[1] << 8) | \
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((UInt32)((const Byte *)(p))[2] << 16) | \
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((UInt32)((const Byte *)(p))[3] << 24))
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#define GetUi64(p) (GetUi32(p) | ((UInt64)GetUi32(((const Byte *)(p)) + 4) << 32))
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#define SetUi16(p, v) { Byte *_ppp_ = (Byte *)(p); UInt32 _vvv_ = (v); \
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_ppp_[0] = (Byte)_vvv_; \
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_ppp_[1] = (Byte)(_vvv_ >> 8); }
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#define SetUi32(p, v) { Byte *_ppp_ = (Byte *)(p); UInt32 _vvv_ = (v); \
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_ppp_[0] = (Byte)_vvv_; \
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_ppp_[1] = (Byte)(_vvv_ >> 8); \
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_ppp_[2] = (Byte)(_vvv_ >> 16); \
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_ppp_[3] = (Byte)(_vvv_ >> 24); }
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#define SetUi64(p, v) { Byte *_ppp2_ = (Byte *)(p); UInt64 _vvv2_ = (v); \
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SetUi32(_ppp2_ , (UInt32)_vvv2_); \
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SetUi32(_ppp2_ + 4, (UInt32)(_vvv2_ >> 32)); }
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#endif
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#ifdef __has_builtin
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#define MY__has_builtin(x) __has_builtin(x)
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#else
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#define MY__has_builtin(x) 0
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#endif
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#if defined(MY_CPU_LE_UNALIGN) && /* defined(_WIN64) && */ (_MSC_VER >= 1300)
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/* Note: we use bswap instruction, that is unsupported in 386 cpu */
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#include <stdlib.h>
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#pragma intrinsic(_byteswap_ushort)
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#pragma intrinsic(_byteswap_ulong)
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#pragma intrinsic(_byteswap_uint64)
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/* #define GetBe16(p) _byteswap_ushort(*(const UInt16 *)(const Byte *)(p)) */
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#define GetBe32(p) _byteswap_ulong(*(const UInt32 *)(const Byte *)(p))
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#define GetBe64(p) _byteswap_uint64(*(const UInt64 *)(const Byte *)(p))
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#define SetBe32(p, v) (*(UInt32 *)(void *)(p)) = _byteswap_ulong(v)
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#elif defined(MY_CPU_LE_UNALIGN) && ( \
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(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))) \
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|| (defined(__clang__) && MY__has_builtin(__builtin_bswap16)) )
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/* #define GetBe16(p) __builtin_bswap16(*(const UInt16 *)(const Byte *)(p)) */
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#define GetBe32(p) __builtin_bswap32(*(const UInt32 *)(const Byte *)(p))
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#define GetBe64(p) __builtin_bswap64(*(const UInt64 *)(const Byte *)(p))
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#define SetBe32(p, v) (*(UInt32 *)(void *)(p)) = __builtin_bswap32(v)
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#else
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#define GetBe32(p) ( \
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((UInt32)((const Byte *)(p))[0] << 24) | \
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((UInt32)((const Byte *)(p))[1] << 16) | \
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((UInt32)((const Byte *)(p))[2] << 8) | \
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((const Byte *)(p))[3] )
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#define GetBe64(p) (((UInt64)GetBe32(p) << 32) | GetBe32(((const Byte *)(p)) + 4))
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#define SetBe32(p, v) { Byte *_ppp_ = (Byte *)(p); UInt32 _vvv_ = (v); \
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_ppp_[0] = (Byte)(_vvv_ >> 24); \
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_ppp_[1] = (Byte)(_vvv_ >> 16); \
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_ppp_[2] = (Byte)(_vvv_ >> 8); \
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_ppp_[3] = (Byte)_vvv_; }
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#endif
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#ifndef GetBe16
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#define GetBe16(p) ( (UInt16) ( \
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((UInt16)((const Byte *)(p))[0] << 8) | \
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((const Byte *)(p))[1] ))
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#endif
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#ifdef MY_CPU_X86_OR_AMD64
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typedef struct
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{
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UInt32 maxFunc;
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UInt32 vendor[3];
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UInt32 ver;
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UInt32 b;
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UInt32 c;
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UInt32 d;
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} Cx86cpuid;
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enum
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{
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CPU_FIRM_INTEL,
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CPU_FIRM_AMD,
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CPU_FIRM_VIA
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};
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void MyCPUID(UInt32 function, UInt32 *a, UInt32 *b, UInt32 *c, UInt32 *d);
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Bool x86cpuid_CheckAndRead(Cx86cpuid *p);
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int x86cpuid_GetFirm(const Cx86cpuid *p);
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#define x86cpuid_GetFamily(ver) (((ver >> 16) & 0xFF0) | ((ver >> 8) & 0xF))
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#define x86cpuid_GetModel(ver) (((ver >> 12) & 0xF0) | ((ver >> 4) & 0xF))
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#define x86cpuid_GetStepping(ver) (ver & 0xF)
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Bool CPU_Is_InOrder();
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Bool CPU_Is_Aes_Supported();
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#endif
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EXTERN_C_END
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#endif
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