LXR linux/arch/arm/include/asm/unified.h

   1/*
   2 * include/asm-arm/unified.h - Unified Assembler Syntax helper macros
   3 *
   4 * Copyright (C) 2008 ARM Limited
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 as
   8 * published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18 */
  19
  20#ifndef __ASM_UNIFIED_H
  21#define __ASM_UNIFIED_H
  22
  23#if defined(__ASSEMBLY__)
  24        .syntax unified
  25#else
  26__asm__(".syntax unified");
  27#endif
  28
  29#ifdef CONFIG_CPU_V7M
  30#define AR_CLASS(x...)
  31#define M_CLASS(x...)   x
  32#else
  33#define AR_CLASS(x...)  x
  34#define M_CLASS(x...)
  35#endif
  36
  37#ifdef CONFIG_THUMB2_KERNEL
  38
  39#if __GNUC__ < 4
  40#error Thumb-2 kernel requires gcc >= 4
  41#endif
  42
  43/* The CPSR bit describing the instruction set (Thumb) */
  44#define PSR_ISETSTATE   PSR_T_BIT
  45
  46#define ARM(x...)
  47#define THUMB(x...)     x
  48#ifdef __ASSEMBLY__
  49#define W(instr)        instr.w
  50#else
  51#define WASM(instr)     #instr ".w"
  52#endif
  53
  54#else   /* !CONFIG_THUMB2_KERNEL */
  55
  56/* The CPSR bit describing the instruction set (ARM) */
  57#define PSR_ISETSTATE   0
  58
  59#define ARM(x...)       x
  60#define THUMB(x...)
  61#ifdef __ASSEMBLY__
  62#define W(instr)        instr
  63#else
  64#define WASM(instr)     #instr
  65#endif
  66
  67#endif  /* CONFIG_THUMB2_KERNEL */
  68
  69#endif  /* !__ASM_UNIFIED_H */
  70