RELEASE LuaJIT-2.0.0-beta1

src/lj_arch.h

@@ -0,0 +1,88 @@
+/*
+** Target architecture selection.
+** Copyright (C) 2005-2009 Mike Pall. See Copyright Notice in luajit.h
+*/
+
+#ifndef _LJ_ARCH_H
+#define _LJ_ARCH_H
+
+#include "lua.h"
+
+
+/* Target endianess. */
+#define LUAJIT_LE	0
+#define LUAJIT_BE	1
+
+/* Target architectures. */
+#define LUAJIT_ARCH_X86		1
+#define LUAJIT_ARCH_x86		1
+#define LUAJIT_ARCH_X64		2
+#define LUAJIT_ARCH_x64		2
+
+
+/* Select native target if no target defined. */
+#ifndef LUAJIT_TARGET
+
+#if defined(__i386) || defined(__i386__) || defined(_M_IX86)
+#define LUAJIT_TARGET	LUAJIT_ARCH_X86
+#elif defined(__x86_64__) || defined(__x86_64) || defined(_M_X64) || defined(_M_AMD64)
+#define LUAJIT_TARGET	LUAJIT_ARCH_X64
+#else
+#error "No support for this architecture (yet)"
+#endif
+
+#endif
+
+/* Set target properties. */
+#if LUAJIT_TARGET == LUAJIT_ARCH_X86
+#define LJ_ARCH_NAME		"x86"
+#define LJ_ARCH_BITS		32
+#define LJ_ARCH_ENDIAN		LUAJIT_LE
+#define LJ_TARGET_X86		1
+#define LJ_TARGET_X86ORX64	1
+#define LJ_PAGESIZE		4096
+#elif LUAJIT_TARGET == LUAJIT_ARCH_X64
+#define LJ_ARCH_NAME		"x64"
+#define LJ_ARCH_BITS		64
+#define LJ_ARCH_ENDIAN		LUAJIT_LE
+#define LJ_TARGET_X64		1
+#define LJ_TARGET_X86ORX64	1
+#define LJ_PAGESIZE		4096
+#error "No support for x64 architecture (yet)"
+#else
+#error "No target architecture defined"
+#endif
+
+/* Disable or enable the JIT compiler. */
+#if defined(LUAJIT_DISABLE_JIT) || defined(LJ_ARCH_NOJIT)
+#define LJ_HASJIT		0
+#else
+#define LJ_HASJIT		1
+#endif
+
+#if LJ_ARCH_ENDIAN == LUAJIT_BE
+#define LJ_ENDIAN_SELECT(le, be)	be
+#define LJ_ENDIAN_LOHI(lo, hi)		hi lo
+#else
+#define LJ_ENDIAN_SELECT(le, be)	le
+#define LJ_ENDIAN_LOHI(lo, hi)		lo hi
+#endif
+
+#if LJ_ARCH_BITS == 32
+#define LJ_32			1
+#define LJ_64			0
+#elif LJ_ARCH_BITS == 64
+#define LJ_32			0
+#define LJ_64			1
+#else
+#error "Bad LJ_ARCH_BITS setting"
+#endif
+
+/* Whether target CPU masks the shift count by the operand length or not. */
+#if LJ_TARGET_X86ORX64
+#define LJ_TARGET_MASKEDSHIFT	1
+#else
+#define LJ_TARGET_MASKEDSHIFT	0
+#endif
+
+#endif