Pre-defined Architecture Macros

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Table of Content - Architecture

Table of Content - Architecture
Alpha
AMD64
ARM
HP/PA RISC
Intel x86
Intel Architecture-64
Motorola 68k
MIPS
PowerPC
RS/6000
SPARC
SuperH
System/370
System/390
z/Architecture

Alpha

Type Macro Description
Identification __alpha__ Defined by GNU C
Version __alpha_ev'V'__ V = Version
Identification __alpha Defined by DEC C
Identification _M_ALPHA Defined by Visual Studio

Example

CPU Macro
Alpha EV4 __alpha_ev4__
Alpha EV5 __alpha_ev5__
Alpha EV6 __alpha_ev6__

Official site Google Directory Wikipedia

AMD64

Type Macro Description
Identification __amd64__
__amd64
__x86_64__
__x86_64		 Defined by GNU C and Sun Studio
Identification _M_X64 Defined by Visual Studio

Official site Google Directory Wikipedia

ARM

Type Macro Description
Identification __arm__ Defined by GNU C and RealView
Identification __thumb__ Defined by GNU C and RealView in Thumb mode
Identification __TARGET_ARCH_ARM
__TARGET_ARCH_THUMB		 Defined by RealView
Version __TARGET_ARCH_ARM = V
__TARGET_ARCH_THUMB = V		 V = Version
Version __TARGET_ARCH_'VR' VR = Version and Revision

Example

CPU Macro
ARM 4T __TARGET_ARM_4T

Official site Google Directory Wikipedia

HP/PA RISC

Type Macro Description
Identification __hppa__ Defined by GNU C
Identification __hppa .
Version _PA_RISC'V'_'R' V = Version
R = Revision

Example

CPU Macro
PA RISC 1.0 _PA_RISC1_0
PA RISC 1.1 _PA_RISC1_1
PA RISC 2.0 _PA_RISC2_0
PA RISC 2.0 __RISC2_0__

Official site Wikipedia

Intel x86

Type Macro Format Description
Identification i386
__i386__		 . Defined by GNU C
Version __i386__
__i486__
__i586__
__i686__		 . Defined by GNU C
Identification __i386 . Defined by Sun Studio
Identification _M_IX86 . Defined by Visual Studio, Intel C/C++, and Digital Mars
Version _M_IX86 V00 V = Version
Identification _X86_ . Defined by MinGW32
Identification __THW_INTEL__ . Defined by XL C/C++
Identification __I86__ . Defined by Digital Mars
Version __I86__ V V = Version
Identification __INTEL__ . Defined by CodeWarrior

Example

CPU _M_IX86 __I86__
80386 300 3
80486 400 4
Pentium 500 5
Pentium Pro/II 600 6

Official site Google Directory Wikipedia

Intel Architecture-64

Type Macro Format Description
Identification __ia64__
_IA64
__IA64__		 . Defined by GNU C
Identification __ia64 . Defined by HP aCC
Identification _M_IA64 . Defined by Visual Studio
Identification _M_IA64 . Defined by Intel C/C++
Version _M_IA64 ? .

Example

CPU _M_IA64 (Intel C/C++)
. 64100

Wikipedia

Motorola 68k

Type Macro Description
Identification __m68k__ Defined by GNU C
Version __mc'V'__
__mc'V'
mc'V'		 V = Version
Identification M68000 Defined by SAS/C

Example

CPU Macro
68000 __mc68000__
68010 __mc68010__
68020 __mc68020__
68030 __mc68030__
68040 __mc68040__
68060 __mc68060__

Wikipedia

MIPS

Type Macro Description
Identification __mips__ Defined by GNU C
Version _MIPS_ISA = _MIPS_ISA_MIPS'V' V = MIPS ISA level
Version _R3000
_R4000		 .
Identification __mips Defined by MIPSpro
Version __mips The value indicates the MIPS ISA (Instruction Set Architecture) level
Version __MIPS_ISA'V'__ V = MIPS ISA level
Identification __MIPS__ Defined by Metrowerks

Example

CPU _MIPS_ISA GNU C Macro __mips MIPSpro Macro
R2000 _MIPS_ISA_MIPS1 . 1 .
R3000 _MIPS_ISA_MIPS1 _R3000 1 .
R6000 _MIPS_ISA_MIPS2 . 2 __MIPS_ISA2__
R4000 . _R4000 . .
R4400 _MIPS_ISA_MIPS3 . 3 __MIPS_ISA3__
R8000 _MIPS_ISA_MIPS4 . 4 __MIPS_ISA4__
R10000 _MIPS_ISA_MIPS4 . 4 __MIPS_ISA4__

Official site Wikipedia

PowerPC

Type Macro Description
Identification __powerpc
__powerpc__
__POWERPC__
__ppc__		 Defined by GNU C
Version __ppc'V'__ V = Version
Identification _M_PPC Defined by Visual Studio
Version _M_PPC .
Identification _ARCH_PPC Defined by XL C/C++
Version _ARCH_'V' V = Version

Example

CPU _M_PPC Macro Macro
PowerPC 601 601 __ppc601__ _ARCH_601
PowerPC 603 603 __ppc603__ _ARCH_603
PowerPC 604 604 __ppc604__ _ARCH_604
PowerPC 620 620 . .

Official site Wikipedia

RS/6000

Type Macro Description
Identification __THW_RS6000 Defined by XL C/C++
Identification _IBMR2 .
Identification _POWER .
Identification _ARCH_PWR
_ARCH_PWR2		 .

Official site Wikipedia

SPARC

Type Macro Description
Identification __sparc__ Defined by GNU C
Identification __sparc Defined by Sun Studio
Version __sparcv8
__sparcv9		 Defined by Sun Studio

Example

CPU Macro
SPARC v8 (SuperSPARC) __sparcv8
SPARC v9 (UltraSPARC) __sparcv9

Official site Google Directory Wikipedia

SuperH

Type Macro Description
Identification __sh__ Defined by GNU C
Version __sh1__
__sh2__
__sh3__
__SH3__
__SH4__
__SH5__		 .

Official site Wikipedia

System/370

Type Macro Description
Identification __370__
__THW_370__		 Defined by XL C/C++

Wikipedia

System/390

Type Macro Description
Identification __s390__
__s390x__		 Defined by GNU C

Wikipedia

z/Architecture

Type Macro Description
Identification __SYSC_ZARCH__ Defined by Systems/C

Wikipedia

Copyright © 2002-2006 Bjørn Reese

Permission to use, copy, modify, and distribute this document for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THIS DOCUMENT IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.

$Id: prearch.muse,v 1.11 2007/02/10 11:50:19 breese Exp $