152 lines
4.7 KiB
C
152 lines
4.7 KiB
C
/* softfp machine description for LoongArch.
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Copyright (C) 2021-2022 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifdef __loongarch64
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#define _FP_W_TYPE_SIZE 64
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#define _FP_W_TYPE unsigned long long
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#define _FP_WS_TYPE signed long long
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#define _FP_I_TYPE long long
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typedef int TItype __attribute__ ((mode (TI)));
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typedef unsigned int UTItype __attribute__ ((mode (TI)));
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#define TI_BITS (__CHAR_BIT__ * (int) sizeof (TItype))
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#define _FP_MUL_MEAT_S(R, X, Y) \
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_FP_MUL_MEAT_1_wide (_FP_WFRACBITS_S, R, X, Y, umul_ppmm)
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#define _FP_MUL_MEAT_D(R, X, Y) \
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_FP_MUL_MEAT_1_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
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#define _FP_MUL_MEAT_Q(R, X, Y) \
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_FP_MUL_MEAT_2_wide (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
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#define _FP_DIV_MEAT_S(R, X, Y) _FP_DIV_MEAT_1_udiv_norm (S, R, X, Y)
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#define _FP_DIV_MEAT_D(R, X, Y) _FP_DIV_MEAT_1_udiv_norm (D, R, X, Y)
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#define _FP_DIV_MEAT_Q(R, X, Y) _FP_DIV_MEAT_2_udiv (Q, R, X, Y)
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#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
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#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1)
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#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1
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#else
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#define _FP_W_TYPE_SIZE 32
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#define _FP_W_TYPE unsigned int
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#define _FP_WS_TYPE signed int
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#define _FP_I_TYPE int
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#define _FP_MUL_MEAT_S(R, X, Y) \
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_FP_MUL_MEAT_1_wide (_FP_WFRACBITS_S, R, X, Y, umul_ppmm)
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#define _FP_MUL_MEAT_D(R, X, Y) \
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_FP_MUL_MEAT_2_wide (_FP_WFRACBITS_D, R, X, Y, umul_ppmm)
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#define _FP_MUL_MEAT_Q(R, X, Y) \
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_FP_MUL_MEAT_4_wide (_FP_WFRACBITS_Q, R, X, Y, umul_ppmm)
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#define _FP_DIV_MEAT_S(R, X, Y) _FP_DIV_MEAT_1_udiv_norm (S, R, X, Y)
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#define _FP_DIV_MEAT_D(R, X, Y) _FP_DIV_MEAT_2_udiv (D, R, X, Y)
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#define _FP_DIV_MEAT_Q(R, X, Y) _FP_DIV_MEAT_4_udiv (Q, R, X, Y)
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#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
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#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1
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#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
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#endif
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/* The type of the result of a floating point comparison. This must
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match __libgcc_cmp_return__ in GCC for the target. */
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typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
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#define CMPtype __gcc_CMPtype
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#define _FP_NANSIGN_S 0
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#define _FP_NANSIGN_D 0
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#define _FP_NANSIGN_Q 0
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#define _FP_KEEPNANFRACP 1
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#define _FP_QNANNEGATEDP 0
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/* NaN payloads should be preserved for NAN2008. */
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#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
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do \
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{ \
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R##_s = X##_s; \
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_FP_FRAC_COPY_##wc (R, X); \
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R##_c = FP_CLS_NAN; \
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} \
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while (0)
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#ifdef __loongarch_hard_float
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#define FP_EX_INVALID 0x100000
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#define FP_EX_DIVZERO 0x080000
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#define FP_EX_OVERFLOW 0x040000
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#define FP_EX_UNDERFLOW 0x020000
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#define FP_EX_INEXACT 0x010000
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#define FP_EX_ALL \
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(FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW | FP_EX_UNDERFLOW \
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| FP_EX_INEXACT)
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#define FP_EX_ENABLE_SHIFT 16
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#define FP_EX_CAUSE_SHIFT 8
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#define FP_RND_NEAREST 0x000
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#define FP_RND_ZERO 0x100
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#define FP_RND_PINF 0x200
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#define FP_RND_MINF 0x300
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#define FP_RND_MASK 0x300
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#define _FP_DECL_EX \
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unsigned long int _fcsr __attribute__ ((unused)) = FP_RND_NEAREST
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#define FP_INIT_ROUNDMODE \
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do \
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{ \
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_fcsr = __builtin_loongarch_movfcsr2gr (0); \
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} \
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while (0)
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#define FP_ROUNDMODE (_fcsr & FP_RND_MASK)
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#define FP_TRAPPING_EXCEPTIONS ((_fcsr << FP_EX_ENABLE_SHIFT) & FP_EX_ALL)
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#define FP_HANDLE_EXCEPTIONS \
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do \
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{ \
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_fcsr &= ~(FP_EX_ALL << FP_EX_CAUSE_SHIFT); \
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_fcsr |= _fex | (_fex << FP_EX_CAUSE_SHIFT); \
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__builtin_loongarch_movgr2fcsr (0, _fcsr); \
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} \
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while (0)
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#else
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#define FP_EX_INVALID (1 << 4)
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#define FP_EX_DIVZERO (1 << 3)
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#define FP_EX_OVERFLOW (1 << 2)
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#define FP_EX_UNDERFLOW (1 << 1)
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#define FP_EX_INEXACT (1 << 0)
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#endif
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#define _FP_TININESS_AFTER_ROUNDING 1
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#define __LITTLE_ENDIAN 1234
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#define __BYTE_ORDER __LITTLE_ENDIAN
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/* Define ALIASNAME as a strong alias for NAME. */
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#define strong_alias(name, aliasname) _strong_alias (name, aliasname)
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#define _strong_alias(name, aliasname) \
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extern __typeof (name) aliasname __attribute__ ((alias (#name)));
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