154 lines
3 KiB
C
154 lines
3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*---------------------------------------------------------------------------+
|
|
| fpu_arith.c |
|
|
| |
|
|
| Code to implement the FPU register/register arithmetic instructions |
|
|
| |
|
|
| Copyright (C) 1992,1993,1997 |
|
|
| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, Australia |
|
|
| E-mail billm@suburbia.net |
|
|
| |
|
|
| |
|
|
+---------------------------------------------------------------------------*/
|
|
|
|
#include "fpu_system.h"
|
|
#include "fpu_emu.h"
|
|
#include "control_w.h"
|
|
#include "status_w.h"
|
|
|
|
void fadd__(void)
|
|
{
|
|
/* fadd st,st(i) */
|
|
int i = FPU_rm;
|
|
clear_C1();
|
|
FPU_add(&st(i), FPU_gettagi(i), 0, control_word);
|
|
}
|
|
|
|
void fmul__(void)
|
|
{
|
|
/* fmul st,st(i) */
|
|
int i = FPU_rm;
|
|
clear_C1();
|
|
FPU_mul(&st(i), FPU_gettagi(i), 0, control_word);
|
|
}
|
|
|
|
void fsub__(void)
|
|
{
|
|
/* fsub st,st(i) */
|
|
clear_C1();
|
|
FPU_sub(0, FPU_rm, control_word);
|
|
}
|
|
|
|
void fsubr_(void)
|
|
{
|
|
/* fsubr st,st(i) */
|
|
clear_C1();
|
|
FPU_sub(REV, FPU_rm, control_word);
|
|
}
|
|
|
|
void fdiv__(void)
|
|
{
|
|
/* fdiv st,st(i) */
|
|
clear_C1();
|
|
FPU_div(0, FPU_rm, control_word);
|
|
}
|
|
|
|
void fdivr_(void)
|
|
{
|
|
/* fdivr st,st(i) */
|
|
clear_C1();
|
|
FPU_div(REV, FPU_rm, control_word);
|
|
}
|
|
|
|
void fadd_i(void)
|
|
{
|
|
/* fadd st(i),st */
|
|
int i = FPU_rm;
|
|
clear_C1();
|
|
FPU_add(&st(i), FPU_gettagi(i), i, control_word);
|
|
}
|
|
|
|
void fmul_i(void)
|
|
{
|
|
/* fmul st(i),st */
|
|
clear_C1();
|
|
FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word);
|
|
}
|
|
|
|
void fsubri(void)
|
|
{
|
|
/* fsubr st(i),st */
|
|
clear_C1();
|
|
FPU_sub(DEST_RM, FPU_rm, control_word);
|
|
}
|
|
|
|
void fsub_i(void)
|
|
{
|
|
/* fsub st(i),st */
|
|
clear_C1();
|
|
FPU_sub(REV | DEST_RM, FPU_rm, control_word);
|
|
}
|
|
|
|
void fdivri(void)
|
|
{
|
|
/* fdivr st(i),st */
|
|
clear_C1();
|
|
FPU_div(DEST_RM, FPU_rm, control_word);
|
|
}
|
|
|
|
void fdiv_i(void)
|
|
{
|
|
/* fdiv st(i),st */
|
|
clear_C1();
|
|
FPU_div(REV | DEST_RM, FPU_rm, control_word);
|
|
}
|
|
|
|
void faddp_(void)
|
|
{
|
|
/* faddp st(i),st */
|
|
int i = FPU_rm;
|
|
clear_C1();
|
|
if (FPU_add(&st(i), FPU_gettagi(i), i, control_word) >= 0)
|
|
FPU_pop();
|
|
}
|
|
|
|
void fmulp_(void)
|
|
{
|
|
/* fmulp st(i),st */
|
|
clear_C1();
|
|
if (FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word) >= 0)
|
|
FPU_pop();
|
|
}
|
|
|
|
void fsubrp(void)
|
|
{
|
|
/* fsubrp st(i),st */
|
|
clear_C1();
|
|
if (FPU_sub(DEST_RM, FPU_rm, control_word) >= 0)
|
|
FPU_pop();
|
|
}
|
|
|
|
void fsubp_(void)
|
|
{
|
|
/* fsubp st(i),st */
|
|
clear_C1();
|
|
if (FPU_sub(REV | DEST_RM, FPU_rm, control_word) >= 0)
|
|
FPU_pop();
|
|
}
|
|
|
|
void fdivrp(void)
|
|
{
|
|
/* fdivrp st(i),st */
|
|
clear_C1();
|
|
if (FPU_div(DEST_RM, FPU_rm, control_word) >= 0)
|
|
FPU_pop();
|
|
}
|
|
|
|
void fdivp_(void)
|
|
{
|
|
/* fdivp st(i),st */
|
|
clear_C1();
|
|
if (FPU_div(REV | DEST_RM, FPU_rm, control_word) >= 0)
|
|
FPU_pop();
|
|
}
|