1/* Machine settings for software floating-point emulation 2 of Andes NDS32 cpu for GNU compiler 3 Copyright (C) 2012-2022 Free Software Foundation, Inc. 4 Contributed by Andes Technology Corporation. 5 6 This file is part of GNU C Library. 7 8 The GNU C Library is free software; you can redistribute it and/or 9 modify it under the terms of the GNU Lesser General Public 10 License as published by the Free Software Foundation; either 11 version 2.1 of the License, or (at your option) any later version. 12 13 In addition to the permissions in the GNU Lesser General Public 14 License, the Free Software Foundation gives you unlimited 15 permission to link the compiled version of this file into 16 combinations with other programs, and to distribute those 17 combinations without any restriction coming from the use of this 18 file. (The Lesser General Public License restrictions do apply in 19 other respects; for example, they cover modification of the file, 20 and distribution when not linked into a combine executable.) 21 22 The GNU C Library is distributed in the hope that it will be useful, 23 but WITHOUT ANY WARRANTY; without even the implied warranty of 24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 25 Lesser General Public License for more details. 26 27 You should have received a copy of the GNU Lesser General Public 28 License along with the GNU C Library; if not, see 29 <http://www.gnu.org/licenses/>. */ 30 31#define _FP_W_TYPE_SIZE 32 32#define _FP_W_TYPE unsigned long 33#define _FP_WS_TYPE signed long 34#define _FP_I_TYPE long 35 36/* The type of the result of a floating point comparison. This must 37 match `__libgcc_cmp_return__' in GCC for the target. */ 38typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__))); 39#define CMPtype __gcc_CMPtype 40 41#define _FP_MUL_MEAT_S(R,X,Y) \ 42 _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) 43#define _FP_MUL_MEAT_D(R,X,Y) \ 44 _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) 45#define _FP_MUL_MEAT_Q(R,X,Y) \ 46 _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) 47 48#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_loop(S,R,X,Y) 49#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) 50#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) 51 52#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) 53#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 54#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 55#define _FP_NANSIGN_S 0 56#define _FP_NANSIGN_D 0 57#define _FP_NANSIGN_Q 0 58 59#define _FP_KEEPNANFRACP 1 60#define _FP_QNANNEGATEDP 0 61 62/* Someone please check this. */ 63#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ 64 do { \ 65 if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \ 66 && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \ 67 { \ 68 R##_s = Y##_s; \ 69 _FP_FRAC_COPY_##wc(R,Y); \ 70 } \ 71 else \ 72 { \ 73 R##_s = X##_s; \ 74 _FP_FRAC_COPY_##wc(R,X); \ 75 } \ 76 R##_c = FP_CLS_NAN; \ 77 } while (0) 78 79#ifdef NDS32_ABI_2FP_PLUS 80#define FP_RND_NEAREST 0x0 81#define FP_RND_PINF 0x1 82#define FP_RND_MINF 0x2 83#define FP_RND_ZERO 0x3 84#define FP_RND_MASK 0x3 85 86#define _FP_DECL_EX \ 87 unsigned long int _fcsr __attribute__ ((unused)) = FP_RND_NEAREST 88 89#define FP_INIT_ROUNDMODE \ 90 do { \ 91 _fcsr = __builtin_nds32_fmfcsr (); \ 92 } while (0) 93 94#define FP_ROUNDMODE (_fcsr & FP_RND_MASK) 95 96#endif 97 98/* Not checked. */ 99#define _FP_TININESS_AFTER_ROUNDING 0 100 101#define __LITTLE_ENDIAN 1234 102#define __BIG_ENDIAN 4321 103 104#if defined __big_endian__ 105# define __BYTE_ORDER __BIG_ENDIAN 106#else 107# define __BYTE_ORDER __LITTLE_ENDIAN 108#endif 109 110/* Define ALIASNAME as a strong alias for NAME. */ 111# define strong_alias(name, aliasname) _strong_alias(name, aliasname) 112# define _strong_alias(name, aliasname) \ 113 extern __typeof (name) aliasname __attribute__ ((alias (#name))); 114