1 /* softfp machine description for LoongArch. 2 Copyright (C) 2021-2022 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 __loongarch64 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 #define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) 47 #define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1) 48 #define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1 49 #else 50 #define _FP_W_TYPE_SIZE 32 51 #define _FP_W_TYPE unsigned int 52 #define _FP_WS_TYPE signed int 53 #define _FP_I_TYPE int 54 55 #define _FP_MUL_MEAT_S(R, X, Y) \ 56 _FP_MUL_MEAT_1_wide (_FP_WFRACBITS_S, R, X, Y, umul_ppmm) 57 #define _FP_MUL_MEAT_D(R, X, Y) \ 58 _FP_MUL_MEAT_2_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm) 59 #define _FP_MUL_MEAT_Q(R, X, Y) \ 60 _FP_MUL_MEAT_4_wide (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm) 61 62 #define _FP_DIV_MEAT_S(R, X, Y) _FP_DIV_MEAT_1_udiv_norm (S, R, X, Y) 63 #define _FP_DIV_MEAT_D(R, X, Y) _FP_DIV_MEAT_2_udiv (D, R, X, Y) 64 #define _FP_DIV_MEAT_Q(R, X, Y) _FP_DIV_MEAT_4_udiv (Q, R, X, Y) 65 66 #define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) 67 #define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 68 #define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 69 #endif 70 71 /* The type of the result of a floating point comparison. This must 72 match __libgcc_cmp_return__ in GCC for the target. */ 73 typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__))); 74 #define CMPtype __gcc_CMPtype 75 76 #define _FP_NANSIGN_S 0 77 #define _FP_NANSIGN_D 0 78 #define _FP_NANSIGN_Q 0 79 80 #define _FP_KEEPNANFRACP 1 81 #define _FP_QNANNEGATEDP 0 82 83 /* NaN payloads should be preserved for NAN2008. */ 84 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ 85 do \ 86 { \ 87 R##_s = X##_s; \ 88 _FP_FRAC_COPY_##wc (R, X); \ 89 R##_c = FP_CLS_NAN; \ 90 } \ 91 while (0) 92 93 #ifdef __loongarch_hard_float 94 #define FP_EX_INVALID 0x100000 95 #define FP_EX_DIVZERO 0x080000 96 #define FP_EX_OVERFLOW 0x040000 97 #define FP_EX_UNDERFLOW 0x020000 98 #define FP_EX_INEXACT 0x010000 99 #define FP_EX_ALL \ 100 (FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW | FP_EX_UNDERFLOW \ 101 | FP_EX_INEXACT) 102 103 #define FP_EX_ENABLE_SHIFT 16 104 #define FP_EX_CAUSE_SHIFT 8 105 106 #define FP_RND_NEAREST 0x000 107 #define FP_RND_ZERO 0x100 108 #define FP_RND_PINF 0x200 109 #define FP_RND_MINF 0x300 110 #define FP_RND_MASK 0x300 111 112 #define _FP_DECL_EX \ 113 unsigned long int _fcsr __attribute__ ((unused)) = FP_RND_NEAREST 114 115 #define FP_INIT_ROUNDMODE \ 116 do \ 117 { \ 118 _fcsr = __builtin_loongarch_movfcsr2gr (0); \ 119 } \ 120 while (0) 121 122 #define FP_ROUNDMODE (_fcsr & FP_RND_MASK) 123 124 #define FP_TRAPPING_EXCEPTIONS ((_fcsr << FP_EX_ENABLE_SHIFT) & FP_EX_ALL) 125 126 #define FP_HANDLE_EXCEPTIONS \ 127 do \ 128 { \ 129 _fcsr &= ~(FP_EX_ALL << FP_EX_CAUSE_SHIFT); \ 130 _fcsr |= _fex | (_fex << FP_EX_CAUSE_SHIFT); \ 131 __builtin_loongarch_movgr2fcsr (0, _fcsr); \ 132 } \ 133 while (0) 134 135 #else 136 #define FP_EX_INVALID (1 << 4) 137 #define FP_EX_DIVZERO (1 << 3) 138 #define FP_EX_OVERFLOW (1 << 2) 139 #define FP_EX_UNDERFLOW (1 << 1) 140 #define FP_EX_INEXACT (1 << 0) 141 #endif 142 143 #define _FP_TININESS_AFTER_ROUNDING 1 144 145 #define __LITTLE_ENDIAN 1234 146 147 #define __BYTE_ORDER __LITTLE_ENDIAN 148 149 /* Define ALIASNAME as a strong alias for NAME. */ 150 #define strong_alias(name, aliasname) _strong_alias (name, aliasname) 151 #define _strong_alias(name, aliasname) \ 152 extern __typeof (name) aliasname __attribute__ ((alias (#name))); 153