File: sljitConfigInternal.h

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/*
 *    Stack-less Just-In-Time compiler
 *
 *    Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright notice, this list of
 *      conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright notice, this list
 *      of conditions and the following disclaimer in the documentation and/or other materials
 *      provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _SLJIT_CONFIG_INTERNAL_H_
#define _SLJIT_CONFIG_INTERNAL_H_

/*
   SLJIT defines the following macros depending on the target architecture:

   Feature detection (boolean) macros:
   SLJIT_32BIT_ARCHITECTURE : 32 bit architecture
   SLJIT_64BIT_ARCHITECTURE : 64 bit architecture
   SLJIT_WORD_SHIFT : the shift required to apply when accessing a sljit_sw/sljit_uw array by index
   SLJIT_DOUBLE_SHIFT : the shift required to apply when accessing a double array by index
   SLJIT_LITTLE_ENDIAN : little endian architecture
   SLJIT_BIG_ENDIAN : big endian architecture
   SLJIT_UNALIGNED : allows unaligned memory accesses for non-fpu operations (only!)
   SLJIT_INDIRECT_CALL : see SLJIT_FUNC_OFFSET() for more information
   SLJIT_RETURN_ADDRESS_OFFSET : a return instruction always adds this offset to the return address

   Types and useful macros:
   sljit_sb, sljit_ub : signed and unsigned 8 bit byte
   sljit_sh, sljit_uh : signed and unsigned 16 bit half-word (short) type
   sljit_si, sljit_ui : signed and unsigned 32 bit integer type
   sljit_sw, sljit_uw : signed and unsigned machine word, enough to store a pointer
   sljit_p : unsgined pointer value (usually the same as sljit_uw, but
             some 64 bit ABIs may use 32 bit pointers)
   sljit_s : single precision floating point value
   sljit_d : double precision floating point value
   SLJIT_CALL : C calling convention define for both calling JIT form C and C callbacks for JIT
   SLJIT_W(number) : defining 64 bit constants on 64 bit architectures (compiler independent helper)
*/

#if !((defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
	|| (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
	|| (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) \
	|| (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
	|| (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
	|| (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
	|| (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
	|| (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
	|| (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
	|| (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
	|| (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) \
	|| (defined SLJIT_CONFIG_TILEGX && SLJIT_CONFIG_TILEGX) \
	|| (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO) \
	|| (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED))
#error "An architecture must be selected"
#endif

/* Sanity check. */
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
	+ (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
	+ (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) \
	+ (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
	+ (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
	+ (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
	+ (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
	+ (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
	+ (defined SLJIT_CONFIG_TILEGX && SLJIT_CONFIG_TILEGX) \
	+ (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
	+ (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
	+ (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) \
	+ (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO) \
	+ (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED) >= 2
#error "Multiple architectures are selected"
#endif

/* Auto select option (requires compiler support) */
#if (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO)

#ifndef _WIN32

#if defined(__i386__) || defined(__i386)
#define SLJIT_CONFIG_X86_32 1
#elif defined(__x86_64__)
#define SLJIT_CONFIG_X86_64 1
#elif defined(__arm__) || defined(__ARM__)
#ifdef __thumb2__
#define SLJIT_CONFIG_ARM_THUMB2 1
#elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
#define SLJIT_CONFIG_ARM_V7 1
#else
#define SLJIT_CONFIG_ARM_V5 1
#endif
#elif defined (__aarch64__)
#define SLJIT_CONFIG_ARM_64 1
#elif defined(__ppc64__) || defined(__powerpc64__) || defined(_ARCH_PPC64) || (defined(_POWER) && defined(__64BIT__))
# if _CALL_ELF != 2
#  define SLJIT_CONFIG_PPC_64 1
# else
#  define SLJIT_CONFIG_UNSUPPORTED 1
# endif
#elif defined(__ppc__) || defined(__powerpc__) || defined(_ARCH_PPC) || defined(_ARCH_PWR) || defined(_ARCH_PWR2) || defined(_POWER)
#define SLJIT_CONFIG_PPC_32 1
#elif defined(__mips__) && !defined(_LP64)
#define SLJIT_CONFIG_MIPS_32 1
#elif defined(__mips64)
#define SLJIT_CONFIG_MIPS_64 1
#elif defined(__sparc__) || defined(__sparc)
#define SLJIT_CONFIG_SPARC_32 1
#elif defined(__tilegx__)
#define SLJIT_CONFIG_TILEGX 1
#else
/* Unsupported architecture */
#define SLJIT_CONFIG_UNSUPPORTED 1
#endif

#else /* !_WIN32 */

#if defined(_M_X64) || defined(__x86_64__)
#define SLJIT_CONFIG_X86_64 1
#elif defined(_ARM_)
#define SLJIT_CONFIG_ARM_V5 1
#else
#define SLJIT_CONFIG_X86_32 1
#endif

#endif /* !WIN32 */
#endif /* SLJIT_CONFIG_AUTO */

#if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
#undef SLJIT_EXECUTABLE_ALLOCATOR
#endif

#if !(defined SLJIT_STD_MACROS_DEFINED && SLJIT_STD_MACROS_DEFINED)

/* These libraries are needed for the macros below. */
#include <stdlib.h>
#include <string.h>

#endif /* STD_MACROS_DEFINED */

/* General macros:
   Note: SLJIT is designed to be independent from them as possible.

   In release mode (SLJIT_DEBUG is not defined) only the following macros are needed:
*/

#ifndef SLJIT_MALLOC
#define SLJIT_MALLOC(size) malloc(size)
#endif

#ifndef SLJIT_FREE
#define SLJIT_FREE(ptr) free(ptr)
#endif

#ifndef SLJIT_MEMMOVE
#define SLJIT_MEMMOVE(dest, src, len) memmove(dest, src, len)
#endif

#ifndef SLJIT_ZEROMEM
#define SLJIT_ZEROMEM(dest, len) memset(dest, 0, len)
#endif

#if !defined(SLJIT_LIKELY) && !defined(SLJIT_UNLIKELY)

#if defined(__GNUC__) && (__GNUC__ >= 3)
#define SLJIT_LIKELY(x)		__builtin_expect((x), 1)
#define SLJIT_UNLIKELY(x)	__builtin_expect((x), 0)
#else
#define SLJIT_LIKELY(x)		(x)
#define SLJIT_UNLIKELY(x)	(x)
#endif

#endif /* !defined(SLJIT_LIKELY) && !defined(SLJIT_UNLIKELY) */

#ifndef SLJIT_INLINE
/* Inline functions. Some old compilers do not support them. */
#if defined(__SUNPRO_C) && __SUNPRO_C <= 0x510
#define SLJIT_INLINE
#else
#define SLJIT_INLINE __inline
#endif
#endif /* !SLJIT_INLINE */

#ifndef SLJIT_CONST
/* Const variables. */
#define SLJIT_CONST const
#endif

#ifndef SLJIT_UNUSED_ARG
/* Unused arguments. */
#define SLJIT_UNUSED_ARG(arg) (void)arg
#endif

#if (defined SLJIT_CONFIG_STATIC && SLJIT_CONFIG_STATIC)
/* Static ABI functions. For all-in-one programs. */

#if defined(__GNUC__)
/* Disable unused warnings in gcc. */
#define SLJIT_API_FUNC_ATTRIBUTE static __attribute__((unused))
#else
#define SLJIT_API_FUNC_ATTRIBUTE static
#endif

#else
#define SLJIT_API_FUNC_ATTRIBUTE
#endif /* (defined SLJIT_CONFIG_STATIC && SLJIT_CONFIG_STATIC) */

#ifndef SLJIT_CACHE_FLUSH

#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)

/* Not required to implement on archs with unified caches. */
#define SLJIT_CACHE_FLUSH(from, to)

#elif defined __APPLE__

/* Supported by all macs since Mac OS 10.5.
   However, it does not work on non-jailbroken iOS devices,
   although the compilation is successful. */

#define SLJIT_CACHE_FLUSH(from, to) \
	sys_icache_invalidate((char*)(from), (char*)(to) - (char*)(from))

#elif defined __ANDROID__

/* Android lacks __clear_cache; instead, cacheflush should be used. */

#define SLJIT_CACHE_FLUSH(from, to) \
    cacheflush((long)(from), (long)(to), 0)

#elif (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)

/* The __clear_cache() implementation of GCC is a dummy function on PowerPC. */
#define SLJIT_CACHE_FLUSH(from, to) \
	ppc_cache_flush((from), (to))

#elif (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)

/* The __clear_cache() implementation of GCC is a dummy function on Sparc. */
#define SLJIT_CACHE_FLUSH(from, to) \
	sparc_cache_flush((from), (to))

#else

/* Calls __ARM_NR_cacheflush on ARM-Linux. */
#define SLJIT_CACHE_FLUSH(from, to) \
	__clear_cache((char*)(from), (char*)(to))

#endif

#endif /* !SLJIT_CACHE_FLUSH */

/* 8 bit byte type. */
typedef unsigned char sljit_ub;
typedef signed char sljit_sb;

/* 16 bit half-word type. */
typedef unsigned short int sljit_uh;
typedef signed short int sljit_sh;

/* 32 bit integer type. */
typedef unsigned int sljit_ui;
typedef signed int sljit_si;

/* Machine word type. Can encapsulate a pointer.
     32 bit for 32 bit machines.
     64 bit for 64 bit machines. */
#if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
/* Just to have something. */
#define SLJIT_WORD_SHIFT 0
typedef unsigned long int sljit_uw;
typedef long int sljit_sw;
#elif !(defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
	&& !(defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
	&& !(defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
	&& !(defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
	&& !(defined SLJIT_CONFIG_TILEGX && SLJIT_CONFIG_TILEGX)
#define SLJIT_32BIT_ARCHITECTURE 1
#define SLJIT_WORD_SHIFT 2
typedef unsigned int sljit_uw;
typedef int sljit_sw;
#else
#define SLJIT_64BIT_ARCHITECTURE 1
#define SLJIT_WORD_SHIFT 3
#ifdef _WIN32
typedef unsigned __int64 sljit_uw;
typedef __int64 sljit_sw;
#else
typedef unsigned long int sljit_uw;
typedef long int sljit_sw;
#endif
#endif

typedef sljit_uw sljit_p;

/* Floating point types. */
typedef float sljit_s;
typedef double sljit_d;

/* Shift for pointer sized data. */
#define SLJIT_POINTER_SHIFT SLJIT_WORD_SHIFT

/* Shift for double precision sized data. */
#define SLJIT_DOUBLE_SHIFT 3

#ifndef SLJIT_W

/* Defining long constants. */
#if (defined SLJIT_64BIT_ARCHITECTURE && SLJIT_64BIT_ARCHITECTURE)
#define SLJIT_W(w)	(w##ll)
#else
#define SLJIT_W(w)	(w)
#endif

#endif /* !SLJIT_W */

#ifndef SLJIT_CALL

/* ABI (Application Binary Interface) types. */
#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)

#if defined(__GNUC__) && !defined(__APPLE__)

#define SLJIT_CALL __attribute__ ((fastcall))
#define SLJIT_X86_32_FASTCALL 1

#elif defined(_MSC_VER)

#define SLJIT_CALL __fastcall
#define SLJIT_X86_32_FASTCALL 1

#elif defined(__BORLANDC__)

#define SLJIT_CALL __msfastcall
#define SLJIT_X86_32_FASTCALL 1

#else /* Unknown compiler. */

/* The cdecl attribute is the default. */
#define SLJIT_CALL

#endif

#else /* Non x86-32 architectures. */

#define SLJIT_CALL

#endif /* SLJIT_CONFIG_X86_32 */

#endif /* !SLJIT_CALL */

#if !defined(SLJIT_BIG_ENDIAN) && !defined(SLJIT_LITTLE_ENDIAN)

/* These macros are useful for the applications. */
#if (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
	|| (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)

#ifdef __LITTLE_ENDIAN__
#define SLJIT_LITTLE_ENDIAN 1
#else
#define SLJIT_BIG_ENDIAN 1
#endif

#elif (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
	|| (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)

#ifdef __MIPSEL__
#define SLJIT_LITTLE_ENDIAN 1
#else
#define SLJIT_BIG_ENDIAN 1
#endif

#elif (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)

#define SLJIT_BIG_ENDIAN 1

#else
#define SLJIT_LITTLE_ENDIAN 1
#endif

#endif /* !defined(SLJIT_BIG_ENDIAN) && !defined(SLJIT_LITTLE_ENDIAN) */

/* Sanity check. */
#if (defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN) && (defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
#error "Exactly one endianness must be selected"
#endif

#if !(defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN) && !(defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
#error "Exactly one endianness must be selected"
#endif

#ifndef SLJIT_INDIRECT_CALL
#if ((defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) && (defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN)) \
	|| ((defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) && defined _AIX)
/* It seems certain ppc compilers use an indirect addressing for functions
   which makes things complicated. */
#define SLJIT_INDIRECT_CALL 1
#endif
#endif /* SLJIT_INDIRECT_CALL */

#ifndef SLJIT_RETURN_ADDRESS_OFFSET
#if (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)
#define SLJIT_RETURN_ADDRESS_OFFSET 8
#else
#define SLJIT_RETURN_ADDRESS_OFFSET 0
#endif
#endif /* SLJIT_RETURN_ADDRESS_OFFSET */

#ifndef SLJIT_SSE2

#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
/* Turn on SSE2 support on x86. */
#define SLJIT_SSE2 1

#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
/* Auto detect SSE2 support using CPUID.
   On 64 bit x86 cpus, sse2 must be present. */
#define SLJIT_DETECT_SSE2 1
#endif

#endif /* (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) */

#endif /* !SLJIT_SSE2 */

#ifndef SLJIT_UNALIGNED

#if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
	|| (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
	|| (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
	|| (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
	|| (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
	|| (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
	|| (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
#define SLJIT_UNALIGNED 1
#endif

#endif /* !SLJIT_UNALIGNED */

#if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR)
SLJIT_API_FUNC_ATTRIBUTE void* sljit_malloc_exec(sljit_uw size);
SLJIT_API_FUNC_ATTRIBUTE void sljit_free_exec(void* ptr);
SLJIT_API_FUNC_ATTRIBUTE void sljit_free_unused_memory_exec(void);
#define SLJIT_MALLOC_EXEC(size) sljit_malloc_exec(size)
#define SLJIT_FREE_EXEC(ptr) sljit_free_exec(ptr)
#endif

#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE)
#include <stdio.h>
#endif

#if (defined SLJIT_DEBUG && SLJIT_DEBUG)

#if !defined(SLJIT_ASSERT) || !defined(SLJIT_ASSERT_STOP)

/* SLJIT_HALT_PROCESS must halt the process. */
#ifndef SLJIT_HALT_PROCESS
#include <stdlib.h>

#define SLJIT_HALT_PROCESS() \
	abort();
#endif /* !SLJIT_HALT_PROCESS */

#include <stdio.h>

#endif /* !SLJIT_ASSERT || !SLJIT_ASSERT_STOP */

/* Feel free to redefine these two macros. */
#ifndef SLJIT_ASSERT

#define SLJIT_ASSERT(x) \
	do { \
		if (SLJIT_UNLIKELY(!(x))) { \
			printf("Assertion failed at " __FILE__ ":%d\n", __LINE__); \
			SLJIT_HALT_PROCESS(); \
		} \
	} while (0)

#endif /* !SLJIT_ASSERT */

#ifndef SLJIT_ASSERT_STOP

#define SLJIT_ASSERT_STOP() \
	do { \
		printf("Should never been reached " __FILE__ ":%d\n", __LINE__); \
		SLJIT_HALT_PROCESS(); \
	} while (0)

#endif /* !SLJIT_ASSERT_STOP */

#else /* (defined SLJIT_DEBUG && SLJIT_DEBUG) */

/* Forcing empty, but valid statements. */
#undef SLJIT_ASSERT
#undef SLJIT_ASSERT_STOP

#define SLJIT_ASSERT(x) \
	do { } while (0)
#define SLJIT_ASSERT_STOP() \
	do { } while (0)

#endif /* (defined SLJIT_DEBUG && SLJIT_DEBUG) */

#ifndef SLJIT_COMPILE_ASSERT

/* Should be improved eventually. */
#define SLJIT_COMPILE_ASSERT(x, description) \
	SLJIT_ASSERT(x)

#endif /* !SLJIT_COMPILE_ASSERT */

#endif