mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-12-25 05:55:35 +00:00
113 lines
3 KiB
C
113 lines
3 KiB
C
/*
|
|
* m68k FPU helpers
|
|
*
|
|
* Copyright (c) 2006-2007 CodeSourcery
|
|
* Written by Paul Brook
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "cpu.h"
|
|
#include "exec/helper-proto.h"
|
|
|
|
uint32_t HELPER(f64_to_i32)(CPUM68KState *env, float64 val)
|
|
{
|
|
return float64_to_int32(val, &env->fp_status);
|
|
}
|
|
|
|
float32 HELPER(f64_to_f32)(CPUM68KState *env, float64 val)
|
|
{
|
|
return float64_to_float32(val, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(i32_to_f64)(CPUM68KState *env, uint32_t val)
|
|
{
|
|
return int32_to_float64(val, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(f32_to_f64)(CPUM68KState *env, float32 val)
|
|
{
|
|
return float32_to_float64(val, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(iround_f64)(CPUM68KState *env, float64 val)
|
|
{
|
|
return float64_round_to_int(val, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(itrunc_f64)(CPUM68KState *env, float64 val)
|
|
{
|
|
return float64_trunc_to_int(val, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(sqrt_f64)(CPUM68KState *env, float64 val)
|
|
{
|
|
return float64_sqrt(val, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(abs_f64)(float64 val)
|
|
{
|
|
return float64_abs(val);
|
|
}
|
|
|
|
float64 HELPER(chs_f64)(float64 val)
|
|
{
|
|
return float64_chs(val);
|
|
}
|
|
|
|
float64 HELPER(add_f64)(CPUM68KState *env, float64 a, float64 b)
|
|
{
|
|
return float64_add(a, b, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(sub_f64)(CPUM68KState *env, float64 a, float64 b)
|
|
{
|
|
return float64_sub(a, b, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(mul_f64)(CPUM68KState *env, float64 a, float64 b)
|
|
{
|
|
return float64_mul(a, b, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(div_f64)(CPUM68KState *env, float64 a, float64 b)
|
|
{
|
|
return float64_div(a, b, &env->fp_status);
|
|
}
|
|
|
|
float64 HELPER(sub_cmp_f64)(CPUM68KState *env, float64 a, float64 b)
|
|
{
|
|
/* ??? This may incorrectly raise exceptions. */
|
|
/* ??? Should flush denormals to zero. */
|
|
float64 res;
|
|
res = float64_sub(a, b, &env->fp_status);
|
|
if (float64_is_quiet_nan(res, &env->fp_status)) {
|
|
/* +/-inf compares equal against itself, but sub returns nan. */
|
|
if (!float64_is_quiet_nan(a, &env->fp_status)
|
|
&& !float64_is_quiet_nan(b, &env->fp_status)) {
|
|
res = float64_zero;
|
|
if (float64_lt_quiet(a, res, &env->fp_status)) {
|
|
res = float64_chs(res);
|
|
}
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
uint32_t HELPER(compare_f64)(CPUM68KState *env, float64 val)
|
|
{
|
|
return float64_compare_quiet(val, float64_zero, &env->fp_status);
|
|
}
|