linux-user, scripts: add a script to update syscall.tbl
[qemu.git] / target / xtensa / fpu_helper.c
1 /*
2 * Copyright (c) 2011 - 2019, Max Filippov, Open Source and Linux Lab.
3 * All rights reserved.
4 *
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.
15 *
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.
26 */
27
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"
35
36 void HELPER(wur_fcr)(CPUXtensaState *env, uint32_t v)
37 {
38 static const int rounding_mode[] = {
39 float_round_nearest_even,
40 float_round_to_zero,
41 float_round_up,
42 float_round_down,
43 };
44
45 env->uregs[FCR] = v & 0xfffff07f;
46 set_float_rounding_mode(rounding_mode[v & 3], &env->fp_status);
47 }
48
49 float32 HELPER(abs_s)(float32 v)
50 {
51 return float32_abs(v);
52 }
53
54 float32 HELPER(neg_s)(float32 v)
55 {
56 return float32_chs(v);
57 }
58
59 float32 HELPER(add_s)(CPUXtensaState *env, float32 a, float32 b)
60 {
61 return float32_add(a, b, &env->fp_status);
62 }
63
64 float32 HELPER(sub_s)(CPUXtensaState *env, float32 a, float32 b)
65 {
66 return float32_sub(a, b, &env->fp_status);
67 }
68
69 float32 HELPER(mul_s)(CPUXtensaState *env, float32 a, float32 b)
70 {
71 return float32_mul(a, b, &env->fp_status);
72 }
73
74 float32 HELPER(madd_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
75 {
76 return float32_muladd(b, c, a, 0, &env->fp_status);
77 }
78
79 float32 HELPER(msub_s)(CPUXtensaState *env, float32 a, float32 b, float32 c)
80 {
81 return float32_muladd(b, c, a, float_muladd_negate_product,
82 &env->fp_status);
83 }
84
85 uint32_t HELPER(ftoi)(float32 v, uint32_t rounding_mode, uint32_t scale)
86 {
87 float_status fp_status = {0};
88
89 set_float_rounding_mode(rounding_mode, &fp_status);
90 return float32_to_int32(float32_scalbn(v, scale, &fp_status), &fp_status);
91 }
92
93 uint32_t HELPER(ftoui)(float32 v, uint32_t rounding_mode, uint32_t scale)
94 {
95 float_status fp_status = {0};
96 float32 res;
97
98 set_float_rounding_mode(rounding_mode, &fp_status);
99
100 res = float32_scalbn(v, scale, &fp_status);
101
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);
106 }
107 }
108
109 float32 HELPER(itof)(CPUXtensaState *env, uint32_t v, uint32_t scale)
110 {
111 return float32_scalbn(int32_to_float32(v, &env->fp_status),
112 (int32_t)scale, &env->fp_status);
113 }
114
115 float32 HELPER(uitof)(CPUXtensaState *env, uint32_t v, uint32_t scale)
116 {
117 return float32_scalbn(uint32_to_float32(v, &env->fp_status),
118 (int32_t)scale, &env->fp_status);
119 }
120
121 static inline void set_br(CPUXtensaState *env, bool v, uint32_t br)
122 {
123 if (v) {
124 env->sregs[BR] |= br;
125 } else {
126 env->sregs[BR] &= ~br;
127 }
128 }
129
130 void HELPER(un_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
131 {
132 set_br(env, float32_unordered_quiet(a, b, &env->fp_status), br);
133 }
134
135 void HELPER(oeq_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
136 {
137 set_br(env, float32_eq_quiet(a, b, &env->fp_status), br);
138 }
139
140 void HELPER(ueq_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
141 {
142 int v = float32_compare_quiet(a, b, &env->fp_status);
143 set_br(env, v == float_relation_equal || v == float_relation_unordered, br);
144 }
145
146 void HELPER(olt_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
147 {
148 set_br(env, float32_lt_quiet(a, b, &env->fp_status), br);
149 }
150
151 void HELPER(ult_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
152 {
153 int v = float32_compare_quiet(a, b, &env->fp_status);
154 set_br(env, v == float_relation_less || v == float_relation_unordered, br);
155 }
156
157 void HELPER(ole_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
158 {
159 set_br(env, float32_le_quiet(a, b, &env->fp_status), br);
160 }
161
162 void HELPER(ule_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
163 {
164 int v = float32_compare_quiet(a, b, &env->fp_status);
165 set_br(env, v != float_relation_greater, br);
166 }