arch/mips/include/asm/compiler.h

   1 /*
   2  * Copyright (C) 2004, 2007  Maciej W. Rozycki
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  */
   8 #ifndef _ASM_COMPILER_H
   9 #define _ASM_COMPILER_H
  10
  11 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
  12 #define GCC_IMM_ASM() "n"
  13 #define GCC_REG_ACCUM "$0"
  14 #else
  15 #define GCC_IMM_ASM() "rn"
  16 #define GCC_REG_ACCUM "accum"
  17 #endif
  18
  19 #ifdef CONFIG_CPU_MIPSR6
  20 /* All MIPS R6 toolchains support the ZC constrain */
  21 #define GCC_OFF_SMALL_ASM() "ZC"
  22 #else
  23 #ifndef CONFIG_CPU_MICROMIPS
  24 #define GCC_OFF_SMALL_ASM() "R"
  25 #elif __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)
  26 #define GCC_OFF_SMALL_ASM() "ZC"
  27 #else
  28 #error "microMIPS compilation unsupported with GCC older than 4.9"
  29 #endif /* CONFIG_CPU_MICROMIPS */
  30 #endif /* CONFIG_CPU_MIPSR6 */
  31
  32 #ifdef CONFIG_CPU_MIPSR6
  33 #define MIPS_ISA_LEVEL "mips64r6"
  34 #define MIPS_ISA_ARCH_LEVEL MIPS_ISA_LEVEL
  35 #define MIPS_ISA_LEVEL_RAW mips64r6
  36 #define MIPS_ISA_ARCH_LEVEL_RAW MIPS_ISA_LEVEL_RAW
  37 #else
  38 /* MIPS64 is a superset of MIPS32 */
  39 #define MIPS_ISA_LEVEL "mips64r2"
  40 #define MIPS_ISA_ARCH_LEVEL "arch=r4000"
  41 #define MIPS_ISA_LEVEL_RAW mips64r2
  42 #define MIPS_ISA_ARCH_LEVEL_RAW MIPS_ISA_LEVEL_RAW
  43 #endif /* CONFIG_CPU_MIPSR6 */
  44
  45 #endif /* _ASM_COMPILER_H */