2009-12-08 18:46:35 +00:00
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/*
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** Target architecture selection.
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** Copyright (C) 2005-2009 Mike Pall. See Copyright Notice in luajit.h
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*/
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#ifndef _LJ_ARCH_H
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#define _LJ_ARCH_H
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#include "lua.h"
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/* Target endianess. */
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#define LUAJIT_LE 0
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#define LUAJIT_BE 1
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/* Target architectures. */
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#define LUAJIT_ARCH_X86 1
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#define LUAJIT_ARCH_x86 1
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#define LUAJIT_ARCH_X64 2
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#define LUAJIT_ARCH_x64 2
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/* Select native target if no target defined. */
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#ifndef LUAJIT_TARGET
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#if defined(__i386) || defined(__i386__) || defined(_M_IX86)
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#define LUAJIT_TARGET LUAJIT_ARCH_X86
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#elif defined(__x86_64__) || defined(__x86_64) || defined(_M_X64) || defined(_M_AMD64)
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#define LUAJIT_TARGET LUAJIT_ARCH_X64
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#else
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#error "No support for this architecture (yet)"
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#endif
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#endif
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/* Set target properties. */
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#if LUAJIT_TARGET == LUAJIT_ARCH_X86
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#define LJ_ARCH_NAME "x86"
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#define LJ_ARCH_BITS 32
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#define LJ_ARCH_ENDIAN LUAJIT_LE
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#define LJ_TARGET_X86 1
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#define LJ_TARGET_X86ORX64 1
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#define LJ_PAGESIZE 4096
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#elif LUAJIT_TARGET == LUAJIT_ARCH_X64
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#define LJ_ARCH_NAME "x64"
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#define LJ_ARCH_BITS 64
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#define LJ_ARCH_ENDIAN LUAJIT_LE
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#define LJ_TARGET_X64 1
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#define LJ_TARGET_X86ORX64 1
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#define LJ_PAGESIZE 4096
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2009-12-29 01:04:20 +00:00
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#define LJ_ARCH_NOJIT 1 /* NYI */
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2009-12-08 18:46:35 +00:00
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#else
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#error "No target architecture defined"
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#endif
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/* Disable or enable the JIT compiler. */
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#if defined(LUAJIT_DISABLE_JIT) || defined(LJ_ARCH_NOJIT)
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#define LJ_HASJIT 0
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#else
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#define LJ_HASJIT 1
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#endif
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#if LJ_ARCH_ENDIAN == LUAJIT_BE
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#define LJ_ENDIAN_SELECT(le, be) be
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#define LJ_ENDIAN_LOHI(lo, hi) hi lo
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#else
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#define LJ_ENDIAN_SELECT(le, be) le
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#define LJ_ENDIAN_LOHI(lo, hi) lo hi
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#endif
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#if LJ_ARCH_BITS == 32
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#define LJ_32 1
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#define LJ_64 0
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#elif LJ_ARCH_BITS == 64
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#define LJ_32 0
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#define LJ_64 1
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#else
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#error "Bad LJ_ARCH_BITS setting"
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#endif
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/* Whether target CPU masks the shift count by the operand length or not. */
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#if LJ_TARGET_X86ORX64
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#define LJ_TARGET_MASKEDSHIFT 1
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#else
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#define LJ_TARGET_MASKEDSHIFT 0
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#endif
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#endif
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