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/*
* Copyright (c) 2011 - 2019, Max Filippov, Open Source and Linux Lab.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Open Source and Linux Lab nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qemu/osdep.h"
#include "qemu/main-loop.h"
#include "cpu.h"
#include "exec/helper-proto.h"
#include "qemu/host-utils.h"
#include "exec/exec-all.h"
#include "fpu/softfloat.h"
void HELPER(wur_fpu2k_fcr)(CPUXtensaState *env, uint32_t v)
{
static const int rounding_mode[] = {
float_round_nearest_even,
float_round_to_zero,
float_round_up,
float_round_down,
};
env->uregs[FCR] = v & 0xfffff07f;
set_float_rounding_mode(rounding_mode[v & 3], &env->fp_status);
}
float32 HELPER(abs_s)(float32 v)
{
return float32_abs(v);
}
float32 HELPER(neg_s)(float32 v)
{
return float32_chs(v);
}
float32 HELPER(fpu2k_add_s)(CPUXtensaState *env, float32 a, float32 b)
{
return float32_add(a, b, &env->fp_status);
}
float32 HELPER(fpu2k_sub_s)(CPUXtensaState *env, float32 a, float32 b)
{
return float32_sub(a, b, &env->fp_status);
}
float32 HELPER(fpu2k_mul_s)(CPUXtensaState *env, float32 a, float32 b)
{
return float32_mul(a, b, &env->fp_status);
}
float32 HELPER(fpu2k_madd_s)(CPUXtensaState *env,
float32 a, float32 b, float32 c)
{
return float32_muladd(b, c, a, 0, &env->fp_status);
}
float32 HELPER(fpu2k_msub_s)(CPUXtensaState *env,
float32 a, float32 b, float32 c)
{
return float32_muladd(b, c, a, float_muladd_negate_product,
&env->fp_status);
}
uint32_t HELPER(ftoi_s)(float32 v, uint32_t rounding_mode, uint32_t scale)
{
float_status fp_status = {0};
set_float_rounding_mode(rounding_mode, &fp_status);
return float32_to_int32(float32_scalbn(v, scale, &fp_status), &fp_status);
}
uint32_t HELPER(ftoui_s)(float32 v, uint32_t rounding_mode, uint32_t scale)
{
float_status fp_status = {0};
float32 res;
set_float_rounding_mode(rounding_mode, &fp_status);
res = float32_scalbn(v, scale, &fp_status);
if (float32_is_neg(v) && !float32_is_any_nan(v)) {
return float32_to_int32(res, &fp_status);
} else {
return float32_to_uint32(res, &fp_status);
}
}
float32 HELPER(itof_s)(CPUXtensaState *env, uint32_t v, uint32_t scale)
{
return float32_scalbn(int32_to_float32(v, &env->fp_status),
(int32_t)scale, &env->fp_status);
}
float32 HELPER(uitof_s)(CPUXtensaState *env, uint32_t v, uint32_t scale)
{
return float32_scalbn(uint32_to_float32(v, &env->fp_status),
(int32_t)scale, &env->fp_status);
}
static inline void set_br(CPUXtensaState *env, bool v, uint32_t br)
{
if (v) {
env->sregs[BR] |= br;
} else {
env->sregs[BR] &= ~br;
}
}
void HELPER(un_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
{
set_br(env, float32_unordered_quiet(a, b, &env->fp_status), br);
}
void HELPER(oeq_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
{
set_br(env, float32_eq_quiet(a, b, &env->fp_status), br);
}
void HELPER(ueq_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
{
FloatRelation v = float32_compare_quiet(a, b, &env->fp_status);
set_br(env, v == float_relation_equal || v == float_relation_unordered, br);
}
void HELPER(olt_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
{
set_br(env, float32_lt_quiet(a, b, &env->fp_status), br);
}
void HELPER(ult_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
{
FloatRelation v = float32_compare_quiet(a, b, &env->fp_status);
set_br(env, v == float_relation_less || v == float_relation_unordered, br);
}
void HELPER(ole_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
{
set_br(env, float32_le_quiet(a, b, &env->fp_status), br);
}
void HELPER(ule_s)(CPUXtensaState *env, uint32_t br, float32 a, float32 b)
{
FloatRelation v = float32_compare_quiet(a, b, &env->fp_status);
set_br(env, v != float_relation_greater, br);
}
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