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Diffstat (limited to '')
| -rw-r--r-- | arch/mips/include/asm/fpregdef.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/arch/mips/include/asm/fpregdef.h b/arch/mips/include/asm/fpregdef.h new file mode 100644 index 000000000..f184ba088 --- /dev/null +++ b/arch/mips/include/asm/fpregdef.h @@ -0,0 +1,113 @@ +/* + * Definitions for the FPU register names + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1995, 1999 Ralf Baechle + * Copyright (C) 1985 MIPS Computer Systems, Inc. + * Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc. + */ +#ifndef _ASM_FPREGDEF_H +#define _ASM_FPREGDEF_H + +#include <asm/sgidefs.h> + +/* + * starting with binutils 2.24.51.20140729, MIPS binutils warn about mixing + * hardfloat and softfloat object files. The kernel build uses soft-float by + * default, so we also need to pass -msoft-float along to GAS if it supports it. + * But this in turn causes assembler errors in files which access hardfloat + * registers. We detect if GAS supports "-msoft-float" in the Makefile and + * explicitly put ".set hardfloat" where floating point registers are touched. + */ +#ifdef GAS_HAS_SET_HARDFLOAT +#define SET_HARDFLOAT .set hardfloat +#else +#define SET_HARDFLOAT +#endif + +#if _MIPS_SIM == _MIPS_SIM_ABI32 + +/* + * These definitions only cover the R3000-ish 16/32 register model. + * But we're trying to be R3000 friendly anyway ... + */ +#define fv0 $f0 /* return value */ +#define fv0f $f1 +#define fv1 $f2 +#define fv1f $f3 +#define fa0 $f12 /* argument registers */ +#define fa0f $f13 +#define fa1 $f14 +#define fa1f $f15 +#define ft0 $f4 /* caller saved */ +#define ft0f $f5 +#define ft1 $f6 +#define ft1f $f7 +#define ft2 $f8 +#define ft2f $f9 +#define ft3 $f10 +#define ft3f $f11 +#define ft4 $f16 +#define ft4f $f17 +#define ft5 $f18 +#define ft5f $f19 +#define fs0 $f20 /* callee saved */ +#define fs0f $f21 +#define fs1 $f22 +#define fs1f $f23 +#define fs2 $f24 +#define fs2f $f25 +#define fs3 $f26 +#define fs3f $f27 +#define fs4 $f28 +#define fs4f $f29 +#define fs5 $f30 +#define fs5f $f31 + +#define fcr31 $31 /* FPU status register */ + +#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */ + +#if _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 + +#define fv0 $f0 /* return value */ +#define fv1 $f2 +#define fa0 $f12 /* argument registers */ +#define fa1 $f13 +#define fa2 $f14 +#define fa3 $f15 +#define fa4 $f16 +#define fa5 $f17 +#define fa6 $f18 +#define fa7 $f19 +#define ft0 $f4 /* caller saved */ +#define ft1 $f5 +#define ft2 $f6 +#define ft3 $f7 +#define ft4 $f8 +#define ft5 $f9 +#define ft6 $f10 +#define ft7 $f11 +#define ft8 $f20 +#define ft9 $f21 +#define ft10 $f22 +#define ft11 $f23 +#define ft12 $f1 +#define ft13 $f3 +#define fs0 $f24 /* callee saved */ +#define fs1 $f25 +#define fs2 $f26 +#define fs3 $f27 +#define fs4 $f28 +#define fs5 $f29 +#define fs6 $f30 +#define fs7 $f31 + +#define fcr31 $31 + +#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */ + +#endif /* _ASM_FPREGDEF_H */ |