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 */