70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Machine-dependent software floating-point definitions.
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* sw64 kernel version.
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* Copyright (C) 1997,1998,1999 Free Software Foundation, Inc.
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* This file is part of the GNU C Library.
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* Contributed by Richard Henderson (rth@cygnus.com),
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* Jakub Jelinek (jakub@redhat.com) and
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* David S. Miller (davem@redhat.com).
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*/
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#ifndef _ASM_SW64_SFP_MACHINE_H
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#define _ASM_SW64_SFP_MACHINE_H
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#define _FP_W_TYPE_SIZE 64
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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_imm(_FP_WFRACBITS_S, R, X, Y)
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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_imm(S, R, X, Y, _FP_DIV_HELP_imm)
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#define _FP_DIV_MEAT_D(R, X, Y) _FP_DIV_MEAT_1_udiv(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
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#define _FP_NANFRAC_D _FP_QNANBIT_D
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#define _FP_NANFRAC_Q _FP_QNANBIT_Q
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#define _FP_NANSIGN_S 1
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#define _FP_NANSIGN_D 1
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#define _FP_NANSIGN_Q 1
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#define _FP_KEEPNANFRACP 1
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/* sw64 Architecture Handbook, 4.7.10.4 sais that
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* we should prefer any type of NaN in Fb, then Fa.
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*/
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#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
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do { \
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R##_s = Y##_s; \
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_FP_FRAC_COPY_##wc(R, X); \
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R##_c = FP_CLS_NAN; \
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} while (0)
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/* Obtain the current rounding mode. */
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#define FP_ROUNDMODE mode
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#define FP_RND_NEAREST (FPCR_DYN_NORMAL >> FPCR_DYN_SHIFT)
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#define FP_RND_ZERO (FPCR_DYN_CHOPPED >> FPCR_DYN_SHIFT)
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#define FP_RND_PINF (FPCR_DYN_PLUS >> FPCR_DYN_SHIFT)
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#define FP_RND_MINF (FPCR_DYN_MINUS >> FPCR_DYN_SHIFT)
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/* Exception flags. */
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#define FP_EX_INVALID IEEE_TRAP_ENABLE_INV
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#define FP_EX_OVERFLOW IEEE_TRAP_ENABLE_OVF
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#define FP_EX_UNDERFLOW IEEE_TRAP_ENABLE_UNF
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#define FP_EX_DIVZERO IEEE_TRAP_ENABLE_DZE
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#define FP_EX_INEXACT IEEE_TRAP_ENABLE_INE
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#define FP_EX_DENORM IEEE_TRAP_ENABLE_DNO
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#define FP_DENORM_ZERO (swcr & IEEE_MAP_DMZ)
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/* We write the results always */
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#define FP_INHIBIT_RESULTS 0
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#endif
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