1 /* softfp machine description for MIPS. 2 Copyright (C) 2009-2022 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 Under Section 7 of GPL version 3, you are granted additional 17 permissions described in the GCC Runtime Library Exception, version 18 3.1, as published by the Free Software Foundation. 19 20 You should have received a copy of the GNU General Public License and 21 a copy of the GCC Runtime Library Exception along with this program; 22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 <http://www.gnu.org/licenses/>. */ 24 25 #ifdef __mips64 26 #define _FP_W_TYPE_SIZE 64 27 #define _FP_W_TYPE unsigned long long 28 #define _FP_WS_TYPE signed long long 29 #define _FP_I_TYPE long long 30 31 typedef int TItype __attribute__ ((mode (TI))); 32 typedef unsigned int UTItype __attribute__ ((mode (TI))); 33 #define TI_BITS (__CHAR_BIT__ * (int) sizeof (TItype)) 34 35 #define _FP_MUL_MEAT_S(R,X,Y) \ 36 _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) 37 #define _FP_MUL_MEAT_D(R,X,Y) \ 38 _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) 39 #define _FP_MUL_MEAT_Q(R,X,Y) \ 40 _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) 41 42 #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(S,R,X,Y) 43 #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(D,R,X,Y) 44 #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y) 45 46 #ifdef __mips_nan2008 47 # define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) 48 # define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1) 49 # define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1 50 #else 51 # define _FP_NANFRAC_S (_FP_QNANBIT_S - 1) 52 # define _FP_NANFRAC_D (_FP_QNANBIT_D - 1) 53 # define _FP_NANFRAC_Q (_FP_QNANBIT_Q - 1), -1 54 #endif 55 #else 56 #define _FP_W_TYPE_SIZE 32 57 #define _FP_W_TYPE unsigned int 58 #define _FP_WS_TYPE signed int 59 #define _FP_I_TYPE int 60 61 #define _FP_MUL_MEAT_S(R,X,Y) \ 62 _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) 63 #define _FP_MUL_MEAT_D(R,X,Y) \ 64 _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) 65 #define _FP_MUL_MEAT_Q(R,X,Y) \ 66 _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) 67 68 #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(S,R,X,Y) 69 #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) 70 #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) 71 72 #ifdef __mips_nan2008 73 # define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) 74 # define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 75 # define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 76 #else 77 # define _FP_NANFRAC_S (_FP_QNANBIT_S - 1) 78 # define _FP_NANFRAC_D (_FP_QNANBIT_D - 1), -1 79 # define _FP_NANFRAC_Q (_FP_QNANBIT_Q - 1), -1, -1, -1 80 #endif 81 #endif 82 83 /* The type of the result of a floating point comparison. This must 84 match __libgcc_cmp_return__ in GCC for the target. */ 85 typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__))); 86 #define CMPtype __gcc_CMPtype 87 88 #define _FP_NANSIGN_S 0 89 #define _FP_NANSIGN_D 0 90 #define _FP_NANSIGN_Q 0 91 92 #define _FP_KEEPNANFRACP 1 93 #ifdef __mips_nan2008 94 # define _FP_QNANNEGATEDP 0 95 #else 96 # define _FP_QNANNEGATEDP 1 97 #endif 98 99 #ifdef __mips_nan2008 100 /* NaN payloads should be preserved for NAN2008. */ 101 # define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ 102 do \ 103 { \ 104 R##_s = X##_s; \ 105 _FP_FRAC_COPY_##wc (R, X); \ 106 R##_c = FP_CLS_NAN; \ 107 } \ 108 while (0) 109 #else 110 /* Comment from glibc: */ 111 /* From my experiments it seems X is chosen unless one of the 112 NaNs is sNaN, in which case the result is NANSIGN/NANFRAC. */ 113 # define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ 114 do { \ 115 if ((_FP_FRAC_HIGH_RAW_##fs(X) | \ 116 _FP_FRAC_HIGH_RAW_##fs(Y)) & _FP_QNANBIT_##fs) \ 117 { \ 118 R##_s = _FP_NANSIGN_##fs; \ 119 _FP_FRAC_SET_##wc(R,_FP_NANFRAC_##fs); \ 120 } \ 121 else \ 122 { \ 123 R##_s = X##_s; \ 124 _FP_FRAC_COPY_##wc(R,X); \ 125 } \ 126 R##_c = FP_CLS_NAN; \ 127 } while (0) 128 #endif 129 130 #ifdef __mips_hard_float 131 #define FP_EX_INVALID 0x40 132 #define FP_EX_DIVZERO 0x20 133 #define FP_EX_OVERFLOW 0x10 134 #define FP_EX_UNDERFLOW 0x08 135 #define FP_EX_INEXACT 0x04 136 #define FP_EX_ALL \ 137 (FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW | FP_EX_UNDERFLOW \ 138 | FP_EX_INEXACT) 139 140 #define FP_EX_ENABLE_SHIFT 5 141 #define FP_EX_CAUSE_SHIFT 10 142 143 #define FP_RND_NEAREST 0x0 144 #define FP_RND_ZERO 0x1 145 #define FP_RND_PINF 0x2 146 #define FP_RND_MINF 0x3 147 #define FP_RND_MASK 0x3 148 149 #define _FP_DECL_EX \ 150 unsigned long int _fcsr __attribute__ ((unused)) = FP_RND_NEAREST 151 152 #define FP_INIT_ROUNDMODE \ 153 do { \ 154 _fcsr = __builtin_mips_get_fcsr (); \ 155 } while (0) 156 157 #define FP_ROUNDMODE (_fcsr & FP_RND_MASK) 158 159 #define FP_TRAPPING_EXCEPTIONS ((_fcsr >> FP_EX_ENABLE_SHIFT) & FP_EX_ALL) 160 161 #define FP_HANDLE_EXCEPTIONS \ 162 do { \ 163 _fcsr &= ~(FP_EX_ALL << FP_EX_CAUSE_SHIFT); \ 164 /* Also clear Unimplemented Operation. */ \ 165 _fcsr &= ~(1 << 17); \ 166 _fcsr |= _fex | (_fex << FP_EX_CAUSE_SHIFT); \ 167 __builtin_mips_set_fcsr (_fcsr); \ 168 } while (0) 169 170 #else 171 #define FP_EX_INVALID (1 << 4) 172 #define FP_EX_DIVZERO (1 << 3) 173 #define FP_EX_OVERFLOW (1 << 2) 174 #define FP_EX_UNDERFLOW (1 << 1) 175 #define FP_EX_INEXACT (1 << 0) 176 #endif 177 178 #define _FP_TININESS_AFTER_ROUNDING 1 179 180 #define __LITTLE_ENDIAN 1234 181 #define __BIG_ENDIAN 4321 182 183 #if defined _MIPSEB 184 # define __BYTE_ORDER __BIG_ENDIAN 185 #else 186 # define __BYTE_ORDER __LITTLE_ENDIAN 187 #endif 188 189 /* Define ALIASNAME as a strong alias for NAME. */ 190 # define strong_alias(name, aliasname) _strong_alias(name, aliasname) 191 # define _strong_alias(name, aliasname) \ 192 extern __typeof (name) aliasname __attribute__ ((alias (#name))); 193
Indexes created Sat Feb 28 05:31:39 UTC 2026