The Tor Browser: js/src/jscpucfg.h@a63d609f5ebe

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

     2  * vim: set ts=8 sts=4 et sw=4 tw=99:

     3  * This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef jscpucfg_h

     8 #define jscpucfg_h

    10 #define JS_HAVE_LONG_LONG

    12 #if defined(_WIN64)

    14 # if defined(_M_X64) || defined(_M_AMD64) || defined(_AMD64_)

    15 #  define IS_LITTLE_ENDIAN 1

    16 #  undef  IS_BIG_ENDIAN

    17 # else  /* !(defined(_M_X64) || defined(_M_AMD64) || defined(_AMD64_)) */

    18 #  error "CPU type is unknown"

    19 # endif /* !(defined(_M_X64) || defined(_M_AMD64) || defined(_AMD64_)) */

    21 #elif defined(_WIN32)

    23 # ifdef __WATCOMC__

    24 #  define HAVE_VA_LIST_AS_ARRAY 1

    25 # endif

    27 # define IS_LITTLE_ENDIAN 1

    28 # undef  IS_BIG_ENDIAN

    30 #elif defined(__APPLE__) || defined(__powerpc__) || defined(__ppc__)

    31 # if __LITTLE_ENDIAN__

    32 #  define IS_LITTLE_ENDIAN 1

    33 #  undef  IS_BIG_ENDIAN

    34 # elif __BIG_ENDIAN__

    35 #  undef  IS_LITTLE_ENDIAN

    36 #  define IS_BIG_ENDIAN 1

    37 # endif

    39 #elif defined(JS_HAVE_ENDIAN_H)

    40 # include <endian.h>

    42 # if defined(__BYTE_ORDER)

    43 #  if __BYTE_ORDER == __LITTLE_ENDIAN

    44 #   define IS_LITTLE_ENDIAN 1

    45 #   undef  IS_BIG_ENDIAN

    46 #  elif __BYTE_ORDER == __BIG_ENDIAN

    47 #   undef  IS_LITTLE_ENDIAN

    48 #   define IS_BIG_ENDIAN 1

    49 #  endif

    50 # else /* !defined(__BYTE_ORDER) */

    51 #  error "endian.h does not define __BYTE_ORDER. Cannot determine endianness."

    52 # endif

    54 /* BSDs */

    55 #elif defined(JS_HAVE_MACHINE_ENDIAN_H)

    56 # include <sys/types.h>

    57 # include <machine/endian.h>

    59 # if defined(_BYTE_ORDER)

    60 #  if _BYTE_ORDER == _LITTLE_ENDIAN

    61 #   define IS_LITTLE_ENDIAN 1

    62 #   undef  IS_BIG_ENDIAN

    63 #  elif _BYTE_ORDER == _BIG_ENDIAN

    64 #   undef  IS_LITTLE_ENDIAN

    65 #   define IS_BIG_ENDIAN 1

    66 #  endif

    67 # else /* !defined(_BYTE_ORDER) */

    68 #  error "machine/endian.h does not define _BYTE_ORDER. Cannot determine endianness."

    69 # endif

    71 #elif defined(JS_HAVE_SYS_ISA_DEFS_H)

    72 # include <sys/isa_defs.h>

    74 # if defined(_BIG_ENDIAN)

    75 #  undef IS_LITTLE_ENDIAN

    76 #  define IS_BIG_ENDIAN 1

    77 # elif defined(_LITTLE_ENDIAN)

    78 #  define IS_LITTLE_ENDIAN 1

    79 #  undef IS_BIG_ENDIAN

    80 # else /* !defined(_LITTLE_ENDIAN) */

    81 #  error "sys/isa_defs.h does not define _BIG_ENDIAN or _LITTLE_ENDIAN. Cannot determine endianness."

    82 # endif

    83 # if !defined(JS_STACK_GROWTH_DIRECTION)

    84 #  if defined(_STACK_GROWS_UPWARD)

    85 #   define JS_STACK_GROWTH_DIRECTION (1)

    86 #  elif defined(_STACK_GROWS_DOWNWARD)

    87 #   define JS_STACK_GROWTH_DIRECTION (-1)

    88 #  endif

    89 # endif

    91 #elif defined(__sparc) || defined(__sparc__) || \

    92       defined(_POWER) || defined(__hppa) || \

    93       defined(_MIPSEB) || defined(_BIG_ENDIAN)

    94 /* IA64 running HP-UX will have _BIG_ENDIAN defined.

    95  * IA64 running Linux will have endian.h and be handled above.

    96  */

    97 # undef IS_LITTLE_ENDIAN

    98 # define IS_BIG_ENDIAN 1

   100 #else /* !defined(__sparc) && !defined(__sparc__) && ... */

   101 # error "Cannot determine endianness of your platform. Please add support to jscpucfg.h."

   102 #endif

   104 #ifndef JS_STACK_GROWTH_DIRECTION

   105 # ifdef __hppa

   106 #  define JS_STACK_GROWTH_DIRECTION (1)

   107 # else

   108 #  define JS_STACK_GROWTH_DIRECTION (-1)

   109 # endif

   110 #endif

   112 #endif /* jscpucfg_h */

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