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86Box/src/cpu/x87_ops_loadstore.h
nerd73 e7b8bda771 Implement clock-dividing for FPUs on clock-multiplied 386s 
This is done by making it so that if the FPU is not at least a 487SX, the clock cycles are multiplied by the CPU multiplier.
2020-07-22 22:17:58 -06:00

494 lines
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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* x87 FPU instructions core.
*
* Version: @(#)x87_ops_loadstore.h 1.0.2 2019/06/11
*
* Author: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
* Copyright 2008-2019 Sarah Walker.
* Copyright 2016-2019 Miran Grca.
*/
static int opFILDiw_a16(uint32_t fetchdat)
{
int16_t temp;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
temp = geteaw(); if (cpu_state.abrt) return 1;
x87_push((double)temp);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fild_16) : (x87_timings.fild_16 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFILDiw_a32(uint32_t fetchdat)
{
int16_t temp;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
temp = geteaw(); if (cpu_state.abrt) return 1;
x87_push((double)temp);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fild_16) : (x87_timings.fild_16 * cpu_multi));
return 0;
}
#endif
static int opFISTiw_a16(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
temp64 = x87_fround(ST(0));
seteaw((int16_t)temp64);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_16) : (x87_timings.fist_16 * cpu_multi));
return cpu_state.abrt;
}
#ifndef FPU_8087
static int opFISTiw_a32(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
temp64 = x87_fround(ST(0));
seteaw((int16_t)temp64);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_16) : (x87_timings.fist_16 * cpu_multi));
return cpu_state.abrt;
}
#endif
static int opFISTPiw_a16(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
temp64 = x87_fround(ST(0));
seteaw((int16_t)temp64); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_16) : (x87_timings.fist_16 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFISTPiw_a32(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
temp64 = x87_fround(ST(0));
seteaw((int16_t)temp64); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_16) : (x87_timings.fist_16 * cpu_multi));
return 0;
}
#endif
static int opFILDiq_a16(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
temp64 = geteaq(); if (cpu_state.abrt) return 1;
x87_push((double)temp64);
cpu_state.MM[cpu_state.TOP&7].q = temp64;
FP_TAG_DEFAULT;
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fild_64) : (x87_timings.fild_64 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFILDiq_a32(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
temp64 = geteaq(); if (cpu_state.abrt) return 1;
x87_push((double)temp64);
cpu_state.MM[cpu_state.TOP&7].q = temp64;
FP_TAG_DEFAULT;
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fild_64) : (x87_timings.fild_64 * cpu_multi));
return 0;
}
#endif
static int FBSTP_a16(uint32_t fetchdat)
{
double tempd;
int c;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
tempd = ST(0);
if (tempd < 0.0)
tempd = -tempd;
for (c = 0; c < 9; c++)
{
uint8_t tempc = (uint8_t)floor(fmod(tempd, 10.0));
tempd -= floor(fmod(tempd, 10.0));
tempd /= 10.0;
tempc |= ((uint8_t)floor(fmod(tempd, 10.0))) << 4;
tempd -= floor(fmod(tempd, 10.0));
tempd /= 10.0;
writememb(easeg, cpu_state.eaaddr + c, tempc);
}
tempc = (uint8_t)floor(fmod(tempd, 10.0));
if (ST(0) < 0.0) tempc |= 0x80;
writememb(easeg, cpu_state.eaaddr + 9, tempc); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fbstp) : (x87_timings.fbstp * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int FBSTP_a32(uint32_t fetchdat)
{
double tempd;
int c;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
tempd = ST(0);
if (tempd < 0.0)
tempd = -tempd;
for (c = 0; c < 9; c++)
{
uint8_t tempc = (uint8_t)floor(fmod(tempd, 10.0));
tempd -= floor(fmod(tempd, 10.0));
tempd /= 10.0;
tempc |= ((uint8_t)floor(fmod(tempd, 10.0))) << 4;
tempd -= floor(fmod(tempd, 10.0));
tempd /= 10.0;
writememb(easeg, cpu_state.eaaddr + c, tempc);
}
tempc = (uint8_t)floor(fmod(tempd, 10.0));
if (ST(0) < 0.0) tempc |= 0x80;
writememb(easeg, cpu_state.eaaddr + 9, tempc); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fbstp) : (x87_timings.fbstp * cpu_multi));
return 0;
}
#endif
static int FISTPiq_a16(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
if (cpu_state.tag[cpu_state.TOP&7] & TAG_UINT64)
temp64 = cpu_state.MM[cpu_state.TOP&7].q;
else
temp64 = x87_fround(ST(0));
seteaq(temp64); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_64) : (x87_timings.fist_64 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int FISTPiq_a32(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
if (cpu_state.tag[cpu_state.TOP&7] & TAG_UINT64)
temp64 = cpu_state.MM[cpu_state.TOP&7].q;
else
temp64 = x87_fround(ST(0));
seteaq(temp64); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_64) : (x87_timings.fist_64 * cpu_multi));
return 0;
}
#endif
static int opFILDil_a16(uint32_t fetchdat)
{
int32_t templ;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
templ = geteal(); if (cpu_state.abrt) return 1;
x87_push((double)templ);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fild_32) : (x87_timings.fild_32 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFILDil_a32(uint32_t fetchdat)
{
int32_t templ;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
templ = geteal(); if (cpu_state.abrt) return 1;
x87_push((double)templ);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fild_32) : (x87_timings.fild_32 * cpu_multi));
return 0;
}
#endif
static int opFISTil_a16(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
temp64 = x87_fround(ST(0));
seteal((int32_t)temp64);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_32) : (x87_timings.fist_32 * cpu_multi));
return cpu_state.abrt;
}
#ifndef FPU_8087
static int opFISTil_a32(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
temp64 = x87_fround(ST(0));
seteal((int32_t)temp64);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_32) : (x87_timings.fist_32 * cpu_multi));
return cpu_state.abrt;
}
#endif
static int opFISTPil_a16(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
temp64 = x87_fround(ST(0));
seteal((int32_t)temp64); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_32) : (x87_timings.fist_32 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFISTPil_a32(uint32_t fetchdat)
{
int64_t temp64;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
temp64 = x87_fround(ST(0));
seteal((int32_t)temp64); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fist_32) : (x87_timings.fist_32 * cpu_multi));
return 0;
}
#endif
static int opFLDe_a16(uint32_t fetchdat)
{
double t;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
t=x87_ld80(); if (cpu_state.abrt) return 1;
x87_push(t);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fld_80) : (x87_timings.fld_80 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFLDe_a32(uint32_t fetchdat)
{
double t;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
t=x87_ld80(); if (cpu_state.abrt) return 1;
x87_push(t);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fld_80) : (x87_timings.fld_80 * cpu_multi));
return 0;
}
#endif
static int opFSTPe_a16(uint32_t fetchdat)
{
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
x87_st80(ST(0)); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fld_80) : (x87_timings.fld_80 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFSTPe_a32(uint32_t fetchdat)
{
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
x87_st80(ST(0)); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fld_80) : (x87_timings.fld_80 * cpu_multi));
return 0;
}
#endif
static int opFLDd_a16(uint32_t fetchdat)
{
x87_td t;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
t.i = geteaq(); if (cpu_state.abrt) return 1;
x87_push(t.d);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fld_64) : (x87_timings.fld_64 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFLDd_a32(uint32_t fetchdat)
{
x87_td t;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
t.i = geteaq(); if (cpu_state.abrt) return 1;
x87_push(t.d);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fld_64) : (x87_timings.fld_64 * cpu_multi));
return 0;
}
#endif
static int opFSTd_a16(uint32_t fetchdat)
{
x87_td t;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
t.d = ST(0);
seteaq(t.i);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_64) : (x87_timings.fst_64 * cpu_multi));
return cpu_state.abrt;
}
#ifndef FPU_8087
static int opFSTd_a32(uint32_t fetchdat)
{
x87_td t;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
t.d = ST(0);
seteaq(t.i);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_64) : (x87_timings.fst_64 * cpu_multi));
return cpu_state.abrt;
}
#endif
static int opFSTPd_a16(uint32_t fetchdat)
{
x87_td t;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
t.d = ST(0);
seteaq(t.i); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_64) : (x87_timings.fst_64 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFSTPd_a32(uint32_t fetchdat)
{
x87_td t;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
t.d = ST(0);
seteaq(t.i); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_64) : (x87_timings.fst_64 * cpu_multi));
return 0;
}
#endif
static int opFLDs_a16(uint32_t fetchdat)
{
x87_ts ts;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
ts.i = geteal(); if (cpu_state.abrt) return 1;
x87_push((double)ts.s);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_32) : (x87_timings.fst_32 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFLDs_a32(uint32_t fetchdat)
{
x87_ts ts;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_READ(cpu_state.ea_seg);
ts.i = geteal(); if (cpu_state.abrt) return 1;
x87_push((double)ts.s);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_32) : (x87_timings.fst_32 * cpu_multi));
return 0;
}
#endif
static int opFSTs_a16(uint32_t fetchdat)
{
x87_ts ts;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
ts.s = (float)ST(0);
seteal(ts.i);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_32) : (x87_timings.fst_32 * cpu_multi));
return cpu_state.abrt;
}
#ifndef FPU_8087
static int opFSTs_a32(uint32_t fetchdat)
{
x87_ts ts;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
ts.s = (float)ST(0);
seteal(ts.i);
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_32) : (x87_timings.fst_32 * cpu_multi));
return cpu_state.abrt;
}
#endif
static int opFSTPs_a16(uint32_t fetchdat)
{
x87_ts ts;
FP_ENTER();
fetch_ea_16(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
ts.s = (float)ST(0);
seteal(ts.i); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_32) : (x87_timings.fst_32 * cpu_multi));
return 0;
}
#ifndef FPU_8087
static int opFSTPs_a32(uint32_t fetchdat)
{
x87_ts ts;
FP_ENTER();
fetch_ea_32(fetchdat);
SEG_CHECK_WRITE(cpu_state.ea_seg);
ts.s = (float)ST(0);
seteal(ts.i); if (cpu_state.abrt) return 1;
x87_pop();
CLOCK_CYCLES((fpu_type >= FPU_487SX) ? (x87_timings.fst_32) : (x87_timings.fst_32 * cpu_multi));
return 0;
}
#endif
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