1 /* 2 * Definitions for the FPU register names 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 * Copyright (C) 1995, 1999 Ralf Baechle 9 * Copyright (C) 1985 MIPS Computer Systems, Inc. 10 * Copyright (C) 1990 - 1992, 1999 Silicon Graphics, Inc. 11 */ 12 #ifndef _ASM_FPREGDEF_H 13 #define _ASM_FPREGDEF_H 14 15 #include <asm/sgidefs.h> 16 17 /* 18 * starting with binutils 2.24.51.20140729, MIPS binutils warn about mixing 19 * hardfloat and softfloat object files. The kernel build uses soft-float by 20 * default, so we also need to pass -msoft-float along to GAS if it supports it. 21 * But this in turn causes assembler errors in files which access hardfloat 22 * registers. We detect if GAS supports "-msoft-float" in the Makefile and 23 * explicitly put ".set hardfloat" where floating point registers are touched. 24 */ 25 #ifdef GAS_HAS_SET_HARDFLOAT 26 #define SET_HARDFLOAT .set hardfloat 27 #else 28 #define SET_HARDFLOAT 29 #endif 30 31 #if _MIPS_SIM == _MIPS_SIM_ABI32 32 33 /* 34 * These definitions only cover the R3000-ish 16/32 register model. 35 * But we're trying to be R3000 friendly anyway ... 36 */ 37 #define fv0 $f0 /* return value */ 38 #define fv0f $f1 39 #define fv1 $f2 40 #define fv1f $f3 41 #define fa0 $f12 /* argument registers */ 42 #define fa0f $f13 43 #define fa1 $f14 44 #define fa1f $f15 45 #define ft0 $f4 /* caller saved */ 46 #define ft0f $f5 47 #define ft1 $f6 48 #define ft1f $f7 49 #define ft2 $f8 50 #define ft2f $f9 51 #define ft3 $f10 52 #define ft3f $f11 53 #define ft4 $f16 54 #define ft4f $f17 55 #define ft5 $f18 56 #define ft5f $f19 57 #define fs0 $f20 /* callee saved */ 58 #define fs0f $f21 59 #define fs1 $f22 60 #define fs1f $f23 61 #define fs2 $f24 62 #define fs2f $f25 63 #define fs3 $f26 64 #define fs3f $f27 65 #define fs4 $f28 66 #define fs4f $f29 67 #define fs5 $f30 68 #define fs5f $f31 69 70 #define fcr31 $31 /* FPU status register */ 71 72 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */ 73 74 #if _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 75 76 #define fv0 $f0 /* return value */ 77 #define fv1 $f2 78 #define fa0 $f12 /* argument registers */ 79 #define fa1 $f13 80 #define fa2 $f14 81 #define fa3 $f15 82 #define fa4 $f16 83 #define fa5 $f17 84 #define fa6 $f18 85 #define fa7 $f19 86 #define ft0 $f4 /* caller saved */ 87 #define ft1 $f5 88 #define ft2 $f6 89 #define ft3 $f7 90 #define ft4 $f8 91 #define ft5 $f9 92 #define ft6 $f10 93 #define ft7 $f11 94 #define ft8 $f20 95 #define ft9 $f21 96 #define ft10 $f22 97 #define ft11 $f23 98 #define ft12 $f1 99 #define ft13 $f3 100 #define fs0 $f24 /* callee saved */ 101 #define fs1 $f25 102 #define fs2 $f26 103 #define fs3 $f27 104 #define fs4 $f28 105 #define fs5 $f29 106 #define fs6 $f30 107 #define fs7 $f31 108 109 #define fcr31 $31 110 111 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32 */ 112 113 #endif /* _ASM_FPREGDEF_H */ 114