283 lines
7.2 KiB
C
283 lines
7.2 KiB
C
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//
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// wasm3_defs.h
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//
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// Created by Volodymyr Shymanskyy on 11/20/19.
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// Copyright © 2019 Volodymyr Shymanskyy. All rights reserved.
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//
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#ifndef wasm3_defs_h
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#define wasm3_defs_h
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#define M3_STR__(x) #x
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#define M3_STR(x) M3_STR__(x)
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#define M3_CONCAT__(a,b) a##b
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#define M3_CONCAT(a,b) M3_CONCAT__(a,b)
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/*
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* Detect compiler
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*/
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# if defined(__clang__)
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# define M3_COMPILER_CLANG 1
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# elif defined(__INTEL_COMPILER)
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# define M3_COMPILER_ICC 1
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# elif defined(__GNUC__) || defined(__GNUG__)
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# define M3_COMPILER_GCC 1
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# elif defined(_MSC_VER)
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# define M3_COMPILER_MSVC 1
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# else
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# warning "Compiler not detected"
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# endif
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# if defined(M3_COMPILER_CLANG)
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# if defined(WIN32)
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# define M3_COMPILER_VER __VERSION__ " for Windows"
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# else
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# define M3_COMPILER_VER __VERSION__
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# endif
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# elif defined(M3_COMPILER_GCC)
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# define M3_COMPILER_VER "GCC " __VERSION__
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# elif defined(M3_COMPILER_ICC)
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# define M3_COMPILER_VER __VERSION__
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# elif defined(M3_COMPILER_MSVC)
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# define M3_COMPILER_VER "MSVC " M3_STR(_MSC_VER)
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# else
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# define M3_COMPILER_VER "unknown"
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# endif
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# ifdef __has_feature
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# define M3_COMPILER_HAS_FEATURE(x) __has_feature(x)
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# else
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# define M3_COMPILER_HAS_FEATURE(x) 0
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# endif
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# ifdef __has_builtin
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# define M3_COMPILER_HAS_BUILTIN(x) __has_builtin(x)
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# else
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# define M3_COMPILER_HAS_BUILTIN(x) 0
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# endif
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/*
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* Detect endianness
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*/
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# if defined(M3_COMPILER_MSVC)
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# define M3_LITTLE_ENDIAN
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# elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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# define M3_LITTLE_ENDIAN
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# elif defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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# define M3_BIG_ENDIAN
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# else
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# error "Byte order not detected"
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# endif
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/*
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* Detect platform
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*/
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# if defined(M3_COMPILER_CLANG) || defined(M3_COMPILER_GCC) || defined(M3_COMPILER_ICC)
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# if defined(__wasm__)
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# define M3_ARCH "wasm"
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# elif defined(__x86_64__)
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# define M3_ARCH "x86_64"
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# elif defined(__i386__)
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# define M3_ARCH "i386"
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# elif defined(__aarch64__)
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# define M3_ARCH "arm64-v8a"
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# elif defined(__arm__)
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# if defined(__ARM_ARCH_7A__)
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# if defined(__ARM_NEON__)
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# if defined(__ARM_PCS_VFP)
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# define M3_ARCH "arm-v7a/NEON hard-float"
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# else
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# define M3_ARCH "arm-v7a/NEON"
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# endif
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# else
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# if defined(__ARM_PCS_VFP)
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# define M3_ARCH "arm-v7a hard-float"
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# else
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# define M3_ARCH "arm-v7a"
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# endif
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# endif
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# else
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# define M3_ARCH "arm"
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# endif
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# elif defined(__riscv)
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# if defined(__riscv_32e)
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# define _M3_ARCH_RV "rv32e"
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# elif __riscv_xlen == 128
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# define _M3_ARCH_RV "rv128i"
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# elif __riscv_xlen == 64
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# define _M3_ARCH_RV "rv64i"
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# elif __riscv_xlen == 32
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# define _M3_ARCH_RV "rv32i"
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# endif
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# if defined(__riscv_muldiv)
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# define _M3_ARCH_RV_M _M3_ARCH_RV "m"
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# else
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# define _M3_ARCH_RV_M _M3_ARCH_RV
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# endif
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# if defined(__riscv_atomic)
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# define _M3_ARCH_RV_A _M3_ARCH_RV_M "a"
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# else
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# define _M3_ARCH_RV_A _M3_ARCH_RV_M
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# endif
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# if defined(__riscv_flen)
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# define _M3_ARCH_RV_F _M3_ARCH_RV_A "f"
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# else
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# define _M3_ARCH_RV_F _M3_ARCH_RV_A
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# endif
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# if defined(__riscv_flen) && __riscv_flen >= 64
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# define _M3_ARCH_RV_D _M3_ARCH_RV_F "d"
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# else
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# define _M3_ARCH_RV_D _M3_ARCH_RV_F
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# endif
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# if defined(__riscv_compressed)
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# define _M3_ARCH_RV_C _M3_ARCH_RV_D "c"
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# else
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# define _M3_ARCH_RV_C _M3_ARCH_RV_D
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# endif
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# define M3_ARCH _M3_ARCH_RV_C
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# elif defined(__mips__)
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# if defined(__MIPSEB__) && defined(__mips64)
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# define M3_ARCH "mips64 " _MIPS_ARCH
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# elif defined(__MIPSEL__) && defined(__mips64)
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# define M3_ARCH "mips64el " _MIPS_ARCH
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# elif defined(__MIPSEB__)
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# define M3_ARCH "mips " _MIPS_ARCH
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# elif defined(__MIPSEL__)
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# define M3_ARCH "mipsel " _MIPS_ARCH
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# endif
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# elif defined(__PPC__)
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# if defined(__PPC64__) && defined(__LITTLE_ENDIAN__)
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# define M3_ARCH "ppc64le"
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# elif defined(__PPC64__)
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# define M3_ARCH "ppc64"
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# else
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# define M3_ARCH "ppc"
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# endif
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# elif defined(__sparc__)
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# if defined(__arch64__)
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# define M3_ARCH "sparc64"
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# else
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# define M3_ARCH "sparc"
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# endif
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# elif defined(__s390x__)
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# define M3_ARCH "s390x"
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# elif defined(__alpha__)
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# define M3_ARCH "alpha"
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# elif defined(__m68k__)
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# define M3_ARCH "m68k"
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# elif defined(__xtensa__)
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# define M3_ARCH "xtensa"
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# elif defined(__arc__)
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# define M3_ARCH "arc32"
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# elif defined(__AVR__)
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# define M3_ARCH "avr"
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# endif
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# endif
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# if defined(M3_COMPILER_MSVC)
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# if defined(_M_X64)
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# define M3_ARCH "x86_64"
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# elif defined(_M_IX86)
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# define M3_ARCH "i386"
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# elif defined(_M_ARM64)
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# define M3_ARCH "arm64"
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# elif defined(_M_ARM)
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# define M3_ARCH "arm"
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# endif
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# endif
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# if !defined(M3_ARCH)
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# warning "Architecture not detected"
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# define M3_ARCH "unknown"
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# endif
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/*
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* Byte swapping (for Big-Endian systems only)
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*/
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# if defined(M3_COMPILER_MSVC)
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# define m3_bswap16(x) _byteswap_ushort((x))
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# define m3_bswap32(x) _byteswap_ulong((x))
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# define m3_bswap64(x) _byteswap_uint64((x))
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# elif defined(M3_COMPILER_GCC) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
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// __builtin_bswap32/64 added in gcc 4.3, __builtin_bswap16 added in gcc 4.8
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# define m3_bswap16(x) __builtin_bswap16((x))
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# define m3_bswap32(x) __builtin_bswap32((x))
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# define m3_bswap64(x) __builtin_bswap64((x))
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# elif defined(M3_COMPILER_CLANG) && M3_COMPILER_HAS_BUILTIN(__builtin_bswap16)
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# define m3_bswap16(x) __builtin_bswap16((x))
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# define m3_bswap32(x) __builtin_bswap32((x))
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# define m3_bswap64(x) __builtin_bswap64((x))
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# elif defined(M3_COMPILER_ICC)
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# define m3_bswap16(x) __builtin_bswap16((x))
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# define m3_bswap32(x) __builtin_bswap32((x))
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# define m3_bswap64(x) __builtin_bswap64((x))
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# else
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# ifdef __linux__
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# include <endian.h>
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# else
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# include <stdint.h>
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# endif
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# if defined(__bswap_16)
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# define m3_bswap16(x) __bswap_16((x))
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# define m3_bswap32(x) __bswap_32((x))
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# define m3_bswap64(x) __bswap_64((x))
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# else
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# warning "Using naive (probably slow) bswap operations"
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static inline
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uint16_t m3_bswap16(uint16_t x) {
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return ((( x >> 8 ) & 0xffu ) | (( x & 0xffu ) << 8 ));
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}
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static inline
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uint32_t m3_bswap32(uint32_t x) {
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return ((( x & 0xff000000u ) >> 24 ) |
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(( x & 0x00ff0000u ) >> 8 ) |
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(( x & 0x0000ff00u ) << 8 ) |
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(( x & 0x000000ffu ) << 24 ));
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}
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static inline
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uint64_t m3_bswap64(uint64_t x) {
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return ((( x & 0xff00000000000000ull ) >> 56 ) |
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(( x & 0x00ff000000000000ull ) >> 40 ) |
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(( x & 0x0000ff0000000000ull ) >> 24 ) |
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(( x & 0x000000ff00000000ull ) >> 8 ) |
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(( x & 0x00000000ff000000ull ) << 8 ) |
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(( x & 0x0000000000ff0000ull ) << 24 ) |
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(( x & 0x000000000000ff00ull ) << 40 ) |
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(( x & 0x00000000000000ffull ) << 56 ));
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}
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# endif
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# endif
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/*
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* Other
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*/
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# if defined(M3_COMPILER_GCC) || defined(M3_COMPILER_CLANG) || defined(M3_COMPILER_ICC)
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# define M3_UNLIKELY(x) __builtin_expect(!!(x), 0)
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# define M3_LIKELY(x) __builtin_expect(!!(x), 1)
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# else
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# define M3_UNLIKELY(x) (x)
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# define M3_LIKELY(x) (x)
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# endif
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#endif // wasm3_defs_h
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