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ARC: math soft float support
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Vineet Gupta
parent
9679dd5ecd
commit
fd9dec20c8
78
sysdeps/arc/bits/fenv.h
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78
sysdeps/arc/bits/fenv.h
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/* Floating point environment. ARC version.
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _FENV_H
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# error "Never use <bits/fenv.h> directly; include <fenv.h> instead."
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#endif
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enum
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{
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FE_INVALID =
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# define FE_INVALID (0x01)
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FE_INVALID,
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FE_DIVBYZERO =
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# define FE_DIVBYZERO (0x02)
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FE_DIVBYZERO,
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FE_OVERFLOW =
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# define FE_OVERFLOW (0x04)
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FE_OVERFLOW,
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FE_UNDERFLOW =
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# define FE_UNDERFLOW (0x08)
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FE_UNDERFLOW,
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FE_INEXACT =
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# define FE_INEXACT (0x10)
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FE_INEXACT
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};
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# define FE_ALL_EXCEPT \
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(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW | FE_INEXACT)
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enum
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{
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FE_TOWARDZERO =
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# define FE_TOWARDZERO (0x0)
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FE_TOWARDZERO,
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FE_TONEAREST =
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# define FE_TONEAREST (0x1) /* default */
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FE_TONEAREST,
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FE_UPWARD =
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# define FE_UPWARD (0x2)
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FE_UPWARD,
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FE_DOWNWARD =
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# define FE_DOWNWARD (0x3)
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FE_DOWNWARD
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};
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typedef unsigned int fexcept_t;
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typedef struct
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{
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unsigned int __fpcr;
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unsigned int __fpsr;
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} fenv_t;
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/* If the default argument is used we use this value. */
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#define FE_DFL_ENV ((const fenv_t *) -1)
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#if __GLIBC_USE (IEC_60559_BFP_EXT)
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/* Type representing floating-point control modes. */
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typedef unsigned int femode_t;
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/* Default floating-point control modes. */
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# define FE_DFL_MODE ((const femode_t *) -1L)
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#endif
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1
sysdeps/arc/nofpu/Implies
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1
sysdeps/arc/nofpu/Implies
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@ -0,0 +1 @@
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ieee754/soft-fp
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27
sysdeps/arc/nofpu/math-tests-exceptions.h
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27
sysdeps/arc/nofpu/math-tests-exceptions.h
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/* Configuration for math tests. Exceptions support ARC version.
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef ARC_NOFPU_MATH_TESTS_EXCEPTIONS_H
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#define ARC_NOFPU_MATH_TESTS_EXCEPTIONS_H 1
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/* Soft-float does not support exceptions. */
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#define EXCEPTION_TESTS_float 0
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#define EXCEPTION_TESTS_double 0
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#define EXCEPTION_TESTS_long_double 0
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#endif
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27
sysdeps/arc/nofpu/math-tests-rounding.h
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27
sysdeps/arc/nofpu/math-tests-rounding.h
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/* Configuration for math tests: rounding mode support. ARC version.
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef ARC_NOFPU_MATH_TESTS_ROUNDING_H
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#define ARC_NOFPU_MATH_TESTS_ROUNDING_H 1
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/* Soft-float only supports to-nearest rounding mode. */
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#define ROUNDING_TESTS_float(MODE) ((MODE) == FE_TONEAREST)
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#define ROUNDING_TESTS_double(MODE) ((MODE) == FE_TONEAREST)
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#define ROUNDING_TESTS_long_double(MODE) ((MODE) == FE_TONEAREST)
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#endif
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70
sysdeps/arc/sfp-machine.h
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70
sysdeps/arc/sfp-machine.h
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@ -0,0 +1,70 @@
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/* Machine-dependent software floating-point definitions. ARC version.
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#define _FP_W_TYPE_SIZE 32
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#define _FP_W_TYPE unsigned long
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#define _FP_WS_TYPE signed long
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#define _FP_I_TYPE long
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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_MUL_MEAT_DW_S(R,X,Y) \
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_FP_MUL_MEAT_DW_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
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#define _FP_MUL_MEAT_DW_D(R,X,Y) \
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_FP_MUL_MEAT_DW_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
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#define _FP_MUL_MEAT_DW_Q(R,X,Y) \
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_FP_MUL_MEAT_DW_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_loop(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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#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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/* This is arbitrarily taken from the PowerPC version. */
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#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
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do { \
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if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \
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&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \
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{ \
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R##_s = Y##_s; \
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_FP_FRAC_COPY_##wc(R,Y); \
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} \
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else \
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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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} \
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R##_c = FP_CLS_NAN; \
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} while (0)
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#define _FP_TININESS_AFTER_ROUNDING 1
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