9p: null terminate fs driver options list
[qemu/ar7.git] / target / xtensa / fpu_helper.c
blob87487293f9a15f3f13e386df1cd3937e7d562c88
1 /*
2 * Copyright (c) 2011 - 2019, Max Filippov, Open Source and Linux Lab.
3 * All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the Open Source and Linux Lab nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include "qemu/osdep.h"
29 #include "qemu/main-loop.h"
30 #include "cpu.h"
31 #include "exec/helper-proto.h"
32 #include "qemu/host-utils.h"
33 #include "exec/exec-all.h"
34 #include "fpu/softfloat.h"
36 void HELPER(wur_fcr)(CPUXtensaState *env, uint32_t v)
38 static const int rounding_mode[] = {
39 float_round_nearest_even,
40 float_round_to_zero,
41 float_round_up,
42 float_round_down,
45 env->uregs[FCR] = v & 0xfffff07f;
46 set_float_rounding_mode(rounding_mode[v & 3], &env->fp_status);
49 float32 HELPER(abs_s)(float32 v)
51 return float32_abs(v);
54 float32 HELPER(neg_s)(float32 v)
56 return float32_chs(v);
59 float32 HELPER(add_s)(CPUXtensaState *env, float32 a, float32 b)
61 return float32_add(a, b, &env->fp_status);
64 float32 HELPER(sub_s)(CPUXtensaState *env, float32 a, float32 b)
66 return float32_sub(a, b, &env->fp_status);
69 float32 HELPER(mul_s)(CPUXtensaState *env, float32 a, float32 b)
71 return float32_mul(a, b, &env->fp_status);
74 float32 HELPER(madd_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
76 return float32_muladd(b, c, a, 0, &env->fp_status);
79 float32 HELPER(msub_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
81 return float32_muladd(b, c, a, float_muladd_negate_product,
82 &env->fp_status);
85 uint32_t HELPER(ftoi)(float32 v, uint32_t rounding_mode, uint32_t scale)
87 float_status fp_status = {0};
89 set_float_rounding_mode(rounding_mode, &fp_status);
90 return float32_to_int32(float32_scalbn(v, scale, &fp_status), &fp_status);
93 uint32_t HELPER(ftoui)(float32 v, uint32_t rounding_mode, uint32_t scale)
95 float_status fp_status = {0};
96 float32 res;
98 set_float_rounding_mode(rounding_mode, &fp_status);
100 res = float32_scalbn(v, scale, &fp_status);
102 if (float32_is_neg(v) && !float32_is_any_nan(v)) {
103 return float32_to_int32(res, &fp_status);
104 } else {
105 return float32_to_uint32(res, &fp_status);
109 float32 HELPER(itof)(CPUXtensaState *env, uint32_t v, uint32_t scale)
111 return float32_scalbn(int32_to_float32(v, &env->fp_status),
112 (int32_t)scale, &env->fp_status);
115 float32 HELPER(uitof)(CPUXtensaState *env, uint32_t v, uint32_t scale)
117 return float32_scalbn(uint32_to_float32(v, &env->fp_status),
118 (int32_t)scale, &env->fp_status);
121 static inline void set_br(CPUXtensaState *env, bool v, uint32_t br)
123 if (v) {
124 env->sregs[BR] |= br;
125 } else {
126 env->sregs[BR] &= ~br;
130 void HELPER(un_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
132 set_br(env, float32_unordered_quiet(a, b, &env->fp_status), br);
135 void HELPER(oeq_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
137 set_br(env, float32_eq_quiet(a, b, &env->fp_status), br);
140 void HELPER(ueq_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
142 FloatRelation v = float32_compare_quiet(a, b, &env->fp_status);
143 set_br(env, v == float_relation_equal || v == float_relation_unordered, br);
146 void HELPER(olt_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
148 set_br(env, float32_lt_quiet(a, b, &env->fp_status), br);
151 void HELPER(ult_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
153 FloatRelation v = float32_compare_quiet(a, b, &env->fp_status);
154 set_br(env, v == float_relation_less || v == float_relation_unordered, br);
157 void HELPER(ole_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
159 set_br(env, float32_le_quiet(a, b, &env->fp_status), br);
162 void HELPER(ule_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
164 FloatRelation v = float32_compare_quiet(a, b, &env->fp_status);
165 set_br(env, v != float_relation_greater, br);