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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/nwfpe/single_cpdo.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/arm/nwfpe/single_cpdo.c')
-rw-r--r-- | arch/arm/nwfpe/single_cpdo.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/arch/arm/nwfpe/single_cpdo.c b/arch/arm/nwfpe/single_cpdo.c new file mode 100644 index 000000000..4e8be20f6 --- /dev/null +++ b/arch/arm/nwfpe/single_cpdo.c @@ -0,0 +1,112 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + NetWinder Floating Point Emulator + (c) Rebel.COM, 1998,1999 + (c) Philip Blundell, 2001 + + Direct questions, comments to Scott Bambrough <scottb@netwinder.org> + +*/ + +#include "fpa11.h" +#include "softfloat.h" +#include "fpopcode.h" + +float32 float32_exp(float32 Fm); +float32 float32_ln(float32 Fm); +float32 float32_sin(float32 rFm); +float32 float32_cos(float32 rFm); +float32 float32_arcsin(float32 rFm); +float32 float32_arctan(float32 rFm); +float32 float32_log(float32 rFm); +float32 float32_tan(float32 rFm); +float32 float32_arccos(float32 rFm); +float32 float32_pow(float32 rFn, float32 rFm); +float32 float32_pol(float32 rFn, float32 rFm); + +static float32 float32_rsf(struct roundingData *roundData, float32 rFn, float32 rFm) +{ + return float32_sub(roundData, rFm, rFn); +} + +static float32 float32_rdv(struct roundingData *roundData, float32 rFn, float32 rFm) +{ + return float32_div(roundData, rFm, rFn); +} + +static float32 (*const dyadic_single[16])(struct roundingData *, float32 rFn, float32 rFm) = { + [ADF_CODE >> 20] = float32_add, + [MUF_CODE >> 20] = float32_mul, + [SUF_CODE >> 20] = float32_sub, + [RSF_CODE >> 20] = float32_rsf, + [DVF_CODE >> 20] = float32_div, + [RDF_CODE >> 20] = float32_rdv, + [RMF_CODE >> 20] = float32_rem, + + [FML_CODE >> 20] = float32_mul, + [FDV_CODE >> 20] = float32_div, + [FRD_CODE >> 20] = float32_rdv, +}; + +static float32 float32_mvf(struct roundingData *roundData, float32 rFm) +{ + return rFm; +} + +static float32 float32_mnf(struct roundingData *roundData, float32 rFm) +{ + return rFm ^ 0x80000000; +} + +static float32 float32_abs(struct roundingData *roundData, float32 rFm) +{ + return rFm & 0x7fffffff; +} + +static float32 (*const monadic_single[16])(struct roundingData*, float32 rFm) = { + [MVF_CODE >> 20] = float32_mvf, + [MNF_CODE >> 20] = float32_mnf, + [ABS_CODE >> 20] = float32_abs, + [RND_CODE >> 20] = float32_round_to_int, + [URD_CODE >> 20] = float32_round_to_int, + [SQT_CODE >> 20] = float32_sqrt, + [NRM_CODE >> 20] = float32_mvf, +}; + +unsigned int SingleCPDO(struct roundingData *roundData, const unsigned int opcode, FPREG * rFd) +{ + FPA11 *fpa11 = GET_FPA11(); + float32 rFm; + unsigned int Fm, opc_mask_shift; + + Fm = getFm(opcode); + if (CONSTANT_FM(opcode)) { + rFm = getSingleConstant(Fm); + } else if (fpa11->fType[Fm] == typeSingle) { + rFm = fpa11->fpreg[Fm].fSingle; + } else { + return 0; + } + + opc_mask_shift = (opcode & MASK_ARITHMETIC_OPCODE) >> 20; + if (!MONADIC_INSTRUCTION(opcode)) { + unsigned int Fn = getFn(opcode); + float32 rFn; + + if (fpa11->fType[Fn] == typeSingle && + dyadic_single[opc_mask_shift]) { + rFn = fpa11->fpreg[Fn].fSingle; + rFd->fSingle = dyadic_single[opc_mask_shift](roundData, rFn, rFm); + } else { + return 0; + } + } else { + if (monadic_single[opc_mask_shift]) { + rFd->fSingle = monadic_single[opc_mask_shift](roundData, rFm); + } else { + return 0; + } + } + + return 1; +} |