| /* |
| * 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_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(add_s)(CPUXtensaState *env, float32 a, float32 b) |
| { |
| return float32_add(a, b, &env->fp_status); |
| } |
| |
| float32 HELPER(sub_s)(CPUXtensaState *env, float32 a, float32 b) |
| { |
| return float32_sub(a, b, &env->fp_status); |
| } |
| |
| float32 HELPER(mul_s)(CPUXtensaState *env, float32 a, float32 b) |
| { |
| return float32_mul(a, b, &env->fp_status); |
| } |
| |
| float32 HELPER(madd_s)(CPUXtensaState *env, float32 a, float32 b, float32 c) |
| { |
| return float32_muladd(b, c, a, 0, &env->fp_status); |
| } |
| |
| float32 HELPER(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)(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)(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)(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)(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); |
| } |