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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /arch/arm/nwfpe/single_cpdo.c
parentInitial commit. (diff)
downloadlinux-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.c112
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;
+}