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https://github.com/Interlisp/maiko.git
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d482cc461c
* Address older versions of C compiler which don't have __BYTE_ORDER__ * Checking for __GNUC__ is not sufficient to determine if builtins are available. * Add makefile fragment for 32-bit PowerPC on Mac OSX build, and ignore the build directories. * Add comment describing use of __BIG/LITTLE_ENDIAN__ definition
168 lines
4.0 KiB
C
168 lines
4.0 KiB
C
#ifndef MAIKO_PLATFORM_H
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#define MAIKO_PLATFORM_H 1
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/*
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* Set up various preprocessor definitions based upon
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* the platform.
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*/
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#if defined(__APPLE__) && defined(__MACH__)
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# define MAIKO_OS_MACOS 1
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# define MAIKO_OS_NAME "macOS"
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# define MAIKO_OS_UNIX_LIKE 1
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# define MAIKO_OS_DETECTED 1
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#endif
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#ifdef __CYGWIN__
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# define MAIKO_OS_CYGWIN 1
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# define MAIKO_OS_NAME "Cygwin"
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# define MAIKO_OS_UNIX_LIKE 1
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# define MAIKO_OS_DETECTED 1
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#endif
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#ifdef __DragonFly__
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# define MAIKO_OS_DRAGONFLYBSD 1
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# define MAIKO_OS_NAME "DragonFly BSD"
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# define MAIKO_OS_BSD_LIKE 1
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# define MAIKO_OS_UNIX_LIKE 1
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# define MAIKO_OS_DETECTED 1
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#endif
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#ifdef __FreeBSD__
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# define MAIKO_OS_FREEBSD 1
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# define MAIKO_OS_NAME "FreeBSD"
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# define MAIKO_OS_BSD_LIKE 1
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# define MAIKO_OS_UNIX_LIKE 1
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# define MAIKO_OS_DETECTED 1
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#endif
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#ifdef __linux__
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# define MAIKO_OS_LINUX 1
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# define MAIKO_OS_NAME "Linux"
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# define MAIKO_OS_UNIX_LIKE 1
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# define MAIKO_OS_DETECTED 1
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#endif
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#ifdef __NetBSD__
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# define MAIKO_OS_NETBSD 1
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# define MAIKO_OS_NAME "NetBSD"
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# define MAIKO_OS_BSD_LIKE 1
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# define MAIKO_OS_UNIX_LIKE 1
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# define MAIKO_OS_DETECTED 1
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#endif
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#ifdef __OpenBSD__
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# define MAIKO_OS_OPENBSD 1
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# define MAIKO_OS_NAME "OpenBSD"
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# define MAIKO_OS_BSD_LIKE 1
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# define MAIKO_OS_UNIX_LIKE 1
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# define MAIKO_OS_DETECTED 1
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#endif
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/* __SVR4: Defined by clang, gcc, and Sun Studio.
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* __SVR4__ was only defined by Sun Studio. */
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#if defined(__sun) && defined(__SVR4)
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# define MAIKO_OS_SOLARIS 1
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# define MAIKO_OS_NAME "Solaris"
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# define MAIKO_OS_UNIX_LIKE 1
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# define MAIKO_OS_DETECTED 1
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#endif
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#if defined(_WIN32) || defined(__WINDOWS__)
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# define MAIKO_OS_WINDOWS 1
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# define MAIKO_OS_NAME "Windows"
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# define MAIKO_OS_DETECTED 1
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#endif
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/* __x86_64__: GNU C, __x86_64: Sun Studio, _M_AMD64: Visual Studio */
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#if defined(__x86_64__) || defined(__x86_64) || defined(_M_AMD64)
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# define MAIKO_ARCH_X86_64 1
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# define MAIKO_ARCH_NAME "x86_64"
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# define MAIKO_ARCH_WORD_BITS 64
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# define MAIKO_ARCH_DETECTED 1
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#endif
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/* __arm__: GNU C */
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#ifdef __arm__
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# define MAIKO_ARCH_ARM 1
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# define MAIKO_ARCH_NAME "arm"
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# define MAIKO_ARCH_WORD_BITS 32
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# define MAIKO_ARCH_DETECTED 1
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#endif
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/* __aarch64__: GNU C */
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#ifdef __aarch64__
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# define MAIKO_ARCH_ARM64 1
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# define MAIKO_ARCH_NAME "arm64"
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# define MAIKO_ARCH_WORD_BITS 64
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# define MAIKO_ARCH_DETECTED 1
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#endif
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/* __i386: GNU C, Sun Studio, _M_IX86: Visual Studio */
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#if defined(__i386) || defined(_M_IX86)
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# define MAIKO_ARCH_X86 1
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# define MAIKO_ARCH_NAME "x86"
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# define MAIKO_ARCH_WORD_BITS 32
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# define MAIKO_ARCH_DETECTED 1
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#endif
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#if defined(__ppc__) || defined(__ppc64__)
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# define MAIKO_ARCH_POWERPC 1
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# define MAIKO_ARCH_NAME "PowerPC"
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# ifdef __ppc64__
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# define MAIKO_ARCH_WORD_BITS 64
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# else
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# define MAIKO_ARCH_WORD_BITS 32
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# endif
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# define MAIKO_ARCH_DETECTED 1
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#endif
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/* Documented at https://github.com/riscv/riscv-toolchain-conventions */
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#ifdef __riscv
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# define MAIKO_ARCH_RISCV 1
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# define MAIKO_ARCH_NAME "RISC-V"
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# define MAIKO_ARCH_WORD_BITS __riscv_xlen
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# define MAIKO_ARCH_DETECTED 1
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#endif
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/* __sparc__: GNU C, __sparc: Sun Studio */
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#if defined(__sparc__) || defined(__sparc)
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# define MAIKO_ARCH_SPARC 1
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# define MAIKO_ARCH_NAME "SPARC"
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# ifdef __sparcv9
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# define MAIKO_ARCH_WORD_BITS 64
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# else
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# define MAIKO_ARCH_WORD_BITS 32
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# endif
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# define MAIKO_ARCH_DETECTED 1
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#endif
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/* Modern GNU C, Clang, Sun Studio provide __BYTE_ORDER__
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* Older GNU C (ca. 4.0.1) provides __BIG_ENDIAN__/__LITTLE_ENDIAN__
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*/
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#if defined(__BYTE_ORDER__)
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# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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# define BYTESWAP 1
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# elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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# undef BYTESWAP
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# else
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# error "Unknown byte order"
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# endif
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#elif __BIG_ENDIAN__ == 1
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# undef BYTESWAP
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#elif __LITTLE_ENDIAN__ == 1
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# define BYTESWAP 1
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#else
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# error "Could not detect byte order"
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#endif
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#ifndef MAIKO_OS_DETECTED
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# error "Could not detect OS."
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#endif
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#ifndef MAIKO_ARCH_DETECTED
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# error "Could not detect system architecture."
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#endif
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#endif /* MAIKO_PLATFORM_H */
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