home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The CICA Windows Explosion!
/
The CICA Windows Explosion! - Disc 2.iso
/
programr
/
dpmigcc5.zip
/
RSX
/
SOURCE
/
FPU-EMU
/
FPU_ARIT.C
< prev
next >
Wrap
C/C++ Source or Header
|
1994-05-27
|
4KB
|
180 lines
/*---------------------------------------------------------------------------+
| fpu_arith.c |
| |
| Code to implement the FPU register/register arithmetic instructions |
| |
| Copyright (C) 1992,1993 |
| W. Metzenthen, 22 Parker St, Ormond, Vic 3163, |
| Australia. E-mail billm@vaxc.cc.monash.edu.au |
| |
| |
+---------------------------------------------------------------------------*/
#include "fpu_system.h"
#include "fpu_emu.h"
#include "control_w.h"
#include "status_w.h"
void fadd__()
{
/* fadd st,st(i) */
clear_C1();
reg_add(FPU_st0_ptr, &st(FPU_rm), FPU_st0_ptr, control_word);
}
void fmul__()
{
/* fmul st,st(i) */
clear_C1();
reg_mul(FPU_st0_ptr, &st(FPU_rm), FPU_st0_ptr, control_word);
}
void fsub__()
{
/* fsub st,st(i) */
clear_C1();
reg_sub(FPU_st0_ptr, &st(FPU_rm), FPU_st0_ptr, control_word);
}
void fsubr_()
{
/* fsubr st,st(i) */
clear_C1();
reg_sub(&st(FPU_rm), FPU_st0_ptr, FPU_st0_ptr, control_word);
}
void fdiv__()
{
/* fdiv st,st(i) */
clear_C1();
reg_div(FPU_st0_ptr, &st(FPU_rm), FPU_st0_ptr, control_word);
}
void fdivr_()
{
/* fdivr st,st(i) */
clear_C1();
reg_div(&st(FPU_rm), FPU_st0_ptr, FPU_st0_ptr, control_word);
}
void fadd_i()
{
/* fadd st(i),st */
clear_C1();
reg_add(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word);
}
void fmul_i()
{
/* fmul st(i),st */
clear_C1();
reg_mul(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word);
}
void fsubri()
{
/* fsubr st(i),st */
/* This is the sense of the 80486 manual
reg_sub(&st(FPU_rm), FPU_st0_ptr, &st(FPU_rm), control_word); */
clear_C1();
reg_sub(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word);
}
void fsub_i()
{
/* fsub st(i),st */
/* This is the sense of the 80486 manual
reg_sub(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word); */
clear_C1();
reg_sub(&st(FPU_rm), FPU_st0_ptr, &st(FPU_rm), control_word);
}
void fdivri()
{
/* fdivr st(i),st */
clear_C1();
reg_div(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word);
}
void fdiv_i()
{
/* fdiv st(i),st */
clear_C1();
reg_div(&st(FPU_rm), FPU_st0_ptr, &st(FPU_rm), control_word);
}
void faddp_()
{
/* faddp st(i),st */
clear_C1();
if ( !reg_add(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word) )
pop();
}
void fmulp_()
{
/* fmulp st(i),st */
clear_C1();
if ( !reg_mul(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word) )
pop();
}
void fsubrp()
{
/* fsubrp st(i),st */
/* This is the sense of the 80486 manual
reg_sub(&st(FPU_rm), FPU_st0_ptr, &st(FPU_rm), control_word); */
clear_C1();
if ( !reg_sub(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word) )
pop();
}
void fsubp_()
{
/* fsubp st(i),st */
/* This is the sense of the 80486 manual
reg_sub(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word); */
clear_C1();
if ( !reg_sub(&st(FPU_rm), FPU_st0_ptr, &st(FPU_rm), control_word) )
pop();
}
void fdivrp()
{
/* fdivrp st(i),st */
clear_C1();
if ( !reg_div(FPU_st0_ptr, &st(FPU_rm), &st(FPU_rm), control_word) )
pop();
}
void fdivp_()
{
/* fdivp st(i),st */
clear_C1();
if ( !reg_div(&st(FPU_rm), FPU_st0_ptr, &st(FPU_rm), control_word) )
pop();
}