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- /* Software floating-point machine description for RISC-V.
- Copyright (C) 2016-2022 Free Software Foundation, Inc.
- This file is part of GCC.
- GCC is free software; you can redistribute it and/or modify it under
- the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 3, or (at your option) any later
- version.
- GCC is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- for more details.
- Under Section 7 of GPL version 3, you are granted additional
- permissions described in the GCC Runtime Library Exception, version
- 3.1, as published by the Free Software Foundation.
- You should have received a copy of the GNU General Public License and
- a copy of the GCC Runtime Library Exception along with this program;
- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
- <http://www.gnu.org/licenses/>. */
- #if __riscv_xlen == 32
- #define _FP_W_TYPE_SIZE 32
- #define _FP_W_TYPE unsigned long
- #define _FP_WS_TYPE signed long
- #define _FP_I_TYPE long
- #define _FP_MUL_MEAT_S(R,X,Y) \
- _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
- #define _FP_MUL_MEAT_D(R,X,Y) \
- _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
- #define _FP_MUL_MEAT_Q(R,X,Y) \
- _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
- #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(S,R,X,Y)
- #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y)
- #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
- #define _FP_NANFRAC_S _FP_QNANBIT_S
- #define _FP_NANFRAC_D _FP_QNANBIT_D, 0
- #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0, 0, 0
- #else
- #define _FP_W_TYPE_SIZE 64
- #define _FP_W_TYPE unsigned long long
- #define _FP_WS_TYPE signed long long
- #define _FP_I_TYPE long long
- #define _FP_MUL_MEAT_S(R,X,Y) \
- _FP_MUL_MEAT_1_imm(_FP_WFRACBITS_S,R,X,Y)
- #define _FP_MUL_MEAT_D(R,X,Y) \
- _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
- #define _FP_MUL_MEAT_Q(R,X,Y) \
- _FP_MUL_MEAT_2_wide_3mul(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
- #define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_imm(S,R,X,Y,_FP_DIV_HELP_imm)
- #define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_1_udiv_norm(D,R,X,Y)
- #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
- #define _FP_NANFRAC_S _FP_QNANBIT_S
- #define _FP_NANFRAC_D _FP_QNANBIT_D
- #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0
- #endif
- #if __riscv_xlen == 64
- typedef int TItype __attribute__ ((mode (TI)));
- typedef unsigned int UTItype __attribute__ ((mode (TI)));
- #define TI_BITS (__CHAR_BIT__ * (int)sizeof(TItype))
- #endif
- /* The type of the result of a floating point comparison. This must
- match __libgcc_cmp_return__ in GCC for the target. */
- typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
- #define CMPtype __gcc_CMPtype
- #define _FP_NANSIGN_S 0
- #define _FP_NANSIGN_D 0
- #define _FP_NANSIGN_Q 0
- #define _FP_KEEPNANFRACP 0
- #define _FP_QNANNEGATEDP 0
- #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
- do { \
- R##_s = _FP_NANSIGN_##fs; \
- _FP_FRAC_SET_##wc(R,_FP_NANFRAC_##fs); \
- R##_c = FP_CLS_NAN; \
- } while (0)
- #define _FP_DECL_EX int _frm __attribute__ ((unused));
- #define FP_ROUNDMODE _frm
- #define FP_RND_NEAREST 0x0
- #define FP_RND_ZERO 0x1
- #define FP_RND_PINF 0x3
- #define FP_RND_MINF 0x2
- #define FP_EX_INVALID 0x10
- #define FP_EX_OVERFLOW 0x04
- #define FP_EX_UNDERFLOW 0x02
- #define FP_EX_DIVZERO 0x08
- #define FP_EX_INEXACT 0x01
- #define _FP_TININESS_AFTER_ROUNDING 1
- #ifdef __riscv_flen
- #define FP_INIT_ROUNDMODE \
- do { \
- __asm__ volatile ("frrm %0" : "=r" (_frm)); \
- } while (0)
- #define FP_HANDLE_EXCEPTIONS \
- do { \
- if (__builtin_expect (_fex, 0)) \
- __asm__ volatile ("csrs fflags, %0" : : "rK" (_fex)); \
- } while (0)
- #else
- #define FP_INIT_ROUNDMODE _frm = FP_RND_NEAREST
- #endif
- #define __LITTLE_ENDIAN 1234
- #define __BIG_ENDIAN 4321
- #if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
- #define __BYTE_ORDER __BIG_ENDIAN
- #else
- #define __BYTE_ORDER __LITTLE_ENDIAN
- #endif
- /* Define ALIASNAME as a strong alias for NAME. */
- # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
- # define _strong_alias(name, aliasname) \
- extern __typeof (name) aliasname __attribute__ ((alias (#name)));
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