1422 lines
52 KiB
C
1422 lines
52 KiB
C
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include "ibm.h"
|
|
#include "x86.h"
|
|
#include "x87.h"
|
|
#include "mem.h"
|
|
#include "cpu.h"
|
|
#include "fdc.h"
|
|
#include "timer.h"
|
|
|
|
|
|
x86seg *ea_seg;
|
|
|
|
int nmi_enable = 1;
|
|
|
|
int inscounts[256];
|
|
uint32_t oldpc2;
|
|
|
|
int trap;
|
|
|
|
#define check_io_perm(port) if (!IOPLp || (eflags&VM_FLAG)) \
|
|
{ \
|
|
int tempi = checkio(port); \
|
|
if (abrt) return 0; \
|
|
if (tempi) \
|
|
{ \
|
|
x86gpf(NULL,0); \
|
|
return 0; \
|
|
} \
|
|
}
|
|
|
|
#define checkio_perm(port) if (!IOPLp || (eflags&VM_FLAG)) \
|
|
{ \
|
|
tempi = checkio(port); \
|
|
if (abrt) break; \
|
|
if (tempi) \
|
|
{ \
|
|
x86gpf(NULL,0); \
|
|
break; \
|
|
} \
|
|
}
|
|
|
|
#define CHECK_READ(seg, low, high) \
|
|
if ((low < (seg)->limit_low) || (high > (seg)->limit_high)) \
|
|
{ \
|
|
x86gpf("Limit check", 0); \
|
|
return 0; \
|
|
}
|
|
|
|
#define CHECK_WRITE(seg, low, high) \
|
|
if ((low < (seg)->limit_low) || (high > (seg)->limit_high)) \
|
|
{ \
|
|
x86gpf("Limit check", 0); \
|
|
return 0; \
|
|
}
|
|
|
|
#define CHECK_WRITE_REP(seg, low, high) \
|
|
if ((low < (seg)->limit_low) || (high > (seg)->limit_high)) \
|
|
{ \
|
|
x86gpf("Limit check", 0); \
|
|
break; \
|
|
}
|
|
|
|
|
|
int cpl_override=0;
|
|
|
|
int has_fpu;
|
|
int fpucount=0;
|
|
int times;
|
|
uint16_t rds;
|
|
uint16_t ea_rseg;
|
|
|
|
int is486;
|
|
int cgate32;
|
|
|
|
#undef readmemb
|
|
#undef writememb
|
|
|
|
|
|
#define readmemb(s,a) ((readlookup2[((s)+(a))>>12]==-1 || (s)==0xFFFFFFFF)?readmemb386l(s,a): *(uint8_t *)(readlookup2[((s)+(a))>>12] + (s) + (a)) )
|
|
|
|
#define writememb(s,a,v) if (writelookup2[((s)+(a))>>12]==-1 || (s)==0xFFFFFFFF) writememb386l(s,a,v); else *(uint8_t *)(writelookup2[((s) + (a)) >> 12] + (s) + (a)) = v
|
|
|
|
#define writememw(s,a,v) if (writelookup2[((s)+(a))>>12]==-1 || (s)==0xFFFFFFFF || (((s)+(a))&0xFFF)>0xFFE) writememwl(s,a,v); else *(uint16_t *)(writelookup2[((s) + (a)) >> 12] + (s) + (a)) = v
|
|
#define writememl(s,a,v) if (writelookup2[((s)+(a))>>12]==-1 || (s)==0xFFFFFFFF || (((s)+(a))&0xFFF)>0xFFC) writememll(s,a,v); else *(uint32_t *)(writelookup2[((s) + (a)) >> 12] + (s) + (a)) = v
|
|
|
|
|
|
uint8_t romext[32768];
|
|
uint8_t *ram,*rom;
|
|
uint16_t biosmask;
|
|
|
|
uint32_t rmdat32;
|
|
#define rmdat rmdat32
|
|
#define fetchdat rmdat32
|
|
uint32_t backupregs[16];
|
|
int oddeven=0;
|
|
int inttype,abrt;
|
|
|
|
|
|
uint32_t oldcs2;
|
|
uint32_t oldecx;
|
|
uint32_t op32;
|
|
|
|
static inline uint8_t fastreadb(uint32_t a)
|
|
{
|
|
if ((a >> 12) == pccache)
|
|
return *((uint8_t *)&pccache2[a]);
|
|
pccache2 = getpccache(a);
|
|
if (abrt)
|
|
return;
|
|
pccache = a >> 12;
|
|
return *((uint8_t *)&pccache2[a]);
|
|
}
|
|
|
|
static inline uint16_t fastreadw(uint32_t a)
|
|
{
|
|
uint32_t t;
|
|
if ((a&0xFFF)>0xFFE)
|
|
{
|
|
t=readmemb(0,a);
|
|
t|=(readmemb(0,a+1)<<8);
|
|
return t;
|
|
}
|
|
if ((a>>12)==pccache) return *((uint16_t *)&pccache2[a]);
|
|
pccache2=getpccache(a);
|
|
if (abrt)
|
|
return;
|
|
pccache=a>>12;
|
|
return *((uint16_t *)&pccache2[a]);
|
|
}
|
|
|
|
static inline uint32_t fastreadl(uint32_t a)
|
|
{
|
|
uint8_t *t;
|
|
uint32_t val;
|
|
if ((a&0xFFF)<0xFFD)
|
|
{
|
|
if ((a>>12)!=pccache)
|
|
{
|
|
t = getpccache(a);
|
|
if (abrt) return 0;
|
|
pccache2 = t;
|
|
pccache=a>>12;
|
|
//return *((uint32_t *)&pccache2[a]);
|
|
}
|
|
return *((uint32_t *)&pccache2[a]);
|
|
}
|
|
val =readmemb(0,a);
|
|
val |=(readmemb(0,a+1)<<8);
|
|
val |=(readmemb(0,a+2)<<16);
|
|
val |=(readmemb(0,a+3)<<24);
|
|
return val;
|
|
}
|
|
|
|
|
|
static inline uint8_t getbyte()
|
|
{
|
|
pc++;
|
|
return fastreadb(cs + (pc - 1));
|
|
}
|
|
|
|
static inline uint16_t getword()
|
|
{
|
|
pc+=2;
|
|
return fastreadw(cs+(pc-2));
|
|
}
|
|
|
|
static inline uint32_t getlong()
|
|
{
|
|
pc+=4;
|
|
return fastreadl(cs+(pc-4));
|
|
}
|
|
|
|
uint32_t *eal_r, *eal_w;
|
|
static inline uint8_t geteab()
|
|
{
|
|
if (mod==3)
|
|
return (rm&4)?regs[rm&3].b.h:regs[rm&3].b.l;
|
|
if (eal_r) return *(uint8_t *)eal_r;
|
|
return readmemb(easeg,eaaddr);
|
|
}
|
|
|
|
static inline uint16_t geteaw()
|
|
{
|
|
if (mod==3)
|
|
return regs[rm].w;
|
|
// cycles-=3;
|
|
if (eal_r) return *(uint16_t *)eal_r;
|
|
return readmemw(easeg,eaaddr);
|
|
}
|
|
|
|
static inline uint32_t geteal()
|
|
{
|
|
if (mod==3)
|
|
return regs[rm].l;
|
|
// cycles-=3;
|
|
if (eal_r) return *eal_r;
|
|
return readmeml(easeg,eaaddr);
|
|
}
|
|
|
|
static inline uint8_t geteab_mem()
|
|
{
|
|
if (eal_r) return *(uint8_t *)eal_r;
|
|
return readmemb(easeg,eaaddr);
|
|
}
|
|
static inline uint16_t geteaw_mem()
|
|
{
|
|
if (eal_r) return *(uint16_t *)eal_r;
|
|
return readmemw(easeg,eaaddr);
|
|
}
|
|
static inline uint32_t geteal_mem()
|
|
{
|
|
if (eal_r) return *eal_r;
|
|
return readmeml(easeg,eaaddr);
|
|
}
|
|
|
|
#define seteab(v) if (mod!=3) { if (eal_w) *(uint8_t *)eal_w=v; else writememb386l(easeg,eaaddr,v); } else if (rm&4) regs[rm&3].b.h=v; else regs[rm].b.l=v
|
|
#define seteaw(v) if (mod!=3) { if (eal_w) *(uint16_t *)eal_w=v; else writememwl(easeg,eaaddr,v); } else regs[rm].w=v
|
|
#define seteal(v) if (mod!=3) { if (eal_w) *eal_w=v; else writememll(easeg,eaaddr,v); } else regs[rm].l=v
|
|
|
|
#define seteab_mem(v) if (eal_w) *(uint8_t *)eal_w=v; else writememb386l(easeg,eaaddr,v);
|
|
#define seteaw_mem(v) if (eal_w) *(uint16_t *)eal_w=v; else writememwl(easeg,eaaddr,v);
|
|
#define seteal_mem(v) if (eal_w) *eal_w=v; else writememll(easeg,eaaddr,v);
|
|
|
|
uint16_t *mod1add[2][8];
|
|
uint32_t *mod1seg[8];
|
|
|
|
static inline void fetch_ea_32_long(uint32_t rmdat)
|
|
{
|
|
eal_r = eal_w = NULL;
|
|
easeg = ea_seg->base;
|
|
ea_rseg = ea_seg->seg;
|
|
if (rm == 4)
|
|
{
|
|
uint8_t sib = rmdat >> 8;
|
|
|
|
switch (mod)
|
|
{
|
|
case 0:
|
|
eaaddr = regs[sib & 7].l;
|
|
pc++;
|
|
break;
|
|
case 1:
|
|
pc++;
|
|
eaaddr = ((uint32_t)(int8_t)getbyte()) + regs[sib & 7].l;
|
|
// pc++;
|
|
break;
|
|
case 2:
|
|
eaaddr = (fastreadl(cs + pc + 1)) + regs[sib & 7].l;
|
|
pc += 5;
|
|
break;
|
|
}
|
|
/*SIB byte present*/
|
|
if ((sib & 7) == 5 && !mod)
|
|
eaaddr = getlong();
|
|
else if ((sib & 6) == 4 && !ssegs)
|
|
{
|
|
easeg = ss;
|
|
ea_rseg = SS;
|
|
ea_seg = &_ss;
|
|
}
|
|
if (((sib >> 3) & 7) != 4)
|
|
eaaddr += regs[(sib >> 3) & 7].l << (sib >> 6);
|
|
}
|
|
else
|
|
{
|
|
eaaddr = regs[rm].l;
|
|
if (mod)
|
|
{
|
|
if (rm == 5 && !ssegs)
|
|
{
|
|
easeg = ss;
|
|
ea_rseg = SS;
|
|
ea_seg = &_ss;
|
|
}
|
|
if (mod == 1)
|
|
{
|
|
eaaddr += ((uint32_t)(int8_t)(rmdat >> 8));
|
|
pc++;
|
|
}
|
|
else
|
|
{
|
|
eaaddr += getlong();
|
|
}
|
|
}
|
|
else if (rm == 5)
|
|
{
|
|
eaaddr = getlong();
|
|
}
|
|
}
|
|
if (easeg != 0xFFFFFFFF && ((easeg + eaaddr) & 0xFFF) <= 0xFFC)
|
|
{
|
|
if ( readlookup2[(easeg + eaaddr) >> 12] != -1)
|
|
eal_r = (uint32_t *)(readlookup2[(easeg + eaaddr) >> 12] + easeg + eaaddr);
|
|
if (writelookup2[(easeg + eaaddr) >> 12] != -1)
|
|
eal_w = (uint32_t *)(writelookup2[(easeg + eaaddr) >> 12] + easeg + eaaddr);
|
|
}
|
|
}
|
|
|
|
static inline void fetch_ea_16_long(uint32_t rmdat)
|
|
{
|
|
eal_r = eal_w = NULL;
|
|
easeg = ea_seg->base;
|
|
ea_rseg = ea_seg->seg;
|
|
if (!mod && rm == 6)
|
|
{
|
|
eaaddr = getword();
|
|
}
|
|
else
|
|
{
|
|
switch (mod)
|
|
{
|
|
case 0:
|
|
eaaddr = 0;
|
|
break;
|
|
case 1:
|
|
eaaddr = (uint16_t)(int8_t)(rmdat >> 8); pc++;
|
|
break;
|
|
case 2:
|
|
eaaddr = getword();
|
|
break;
|
|
}
|
|
eaaddr += (*mod1add[0][rm]) + (*mod1add[1][rm]);
|
|
if (mod1seg[rm] == &ss && !ssegs)
|
|
{
|
|
easeg = ss;
|
|
ea_rseg = SS;
|
|
ea_seg = &_ss;
|
|
}
|
|
eaaddr &= 0xFFFF;
|
|
}
|
|
if (easeg != 0xFFFFFFFF && ((easeg + eaaddr) & 0xFFF) <= 0xFFC)
|
|
{
|
|
if ( readlookup2[(easeg + eaaddr) >> 12] != -1)
|
|
eal_r = (uint32_t *)(readlookup2[(easeg + eaaddr) >> 12] + easeg + eaaddr);
|
|
if (writelookup2[(easeg + eaaddr) >> 12] != -1)
|
|
eal_w = (uint32_t *)(writelookup2[(easeg + eaaddr) >> 12] + easeg + eaaddr);
|
|
}
|
|
}
|
|
|
|
#define fetch_ea_16(rmdat) pc++; mod=(rmdat >> 6) & 3; reg=(rmdat >> 3) & 7; rm = rmdat & 7; if (mod != 3) { fetch_ea_16_long(rmdat); if (abrt) return 0; }
|
|
#define fetch_ea_32(rmdat) pc++; mod=(rmdat >> 6) & 3; reg=(rmdat >> 3) & 7; rm = rmdat & 7; if (mod != 3) { fetch_ea_32_long(rmdat); } if (abrt) return 0
|
|
|
|
#include "x86_flags.h"
|
|
|
|
void x86_int(int num)
|
|
{
|
|
uint32_t addr;
|
|
// pclog("x86_int\n");
|
|
flags_rebuild();
|
|
pc=oldpc;
|
|
if (msw&1)
|
|
{
|
|
pmodeint(num,0);
|
|
}
|
|
else
|
|
{
|
|
if (stack32)
|
|
{
|
|
writememw(ss,ESP-2,flags);
|
|
writememw(ss,ESP-4,CS);
|
|
writememw(ss,ESP-6,pc);
|
|
ESP-=6;
|
|
}
|
|
else
|
|
{
|
|
writememw(ss,((SP-2)&0xFFFF),flags);
|
|
writememw(ss,((SP-4)&0xFFFF),CS);
|
|
writememw(ss,((SP-6)&0xFFFF),pc);
|
|
SP-=6;
|
|
}
|
|
addr = (num << 2) + idt.base;
|
|
|
|
flags&=~I_FLAG;
|
|
flags&=~T_FLAG;
|
|
oxpc=pc;
|
|
pc=readmemw(0,addr);
|
|
loadcs(readmemw(0,addr+2));
|
|
}
|
|
cycles-=70;
|
|
}
|
|
|
|
void x86_int_sw(int num)
|
|
{
|
|
uint32_t addr;
|
|
// pclog("x86_int\n");
|
|
flags_rebuild();
|
|
if (msw&1)
|
|
{
|
|
pmodeint(num,1);
|
|
}
|
|
else
|
|
{
|
|
if (stack32)
|
|
{
|
|
writememw(ss,ESP-2,flags);
|
|
writememw(ss,ESP-4,CS);
|
|
writememw(ss,ESP-6,pc);
|
|
ESP-=6;
|
|
}
|
|
else
|
|
{
|
|
writememw(ss,((SP-2)&0xFFFF),flags);
|
|
writememw(ss,((SP-4)&0xFFFF),CS);
|
|
writememw(ss,((SP-6)&0xFFFF),pc);
|
|
SP-=6;
|
|
}
|
|
addr = (num << 2) + idt.base;
|
|
|
|
flags&=~I_FLAG;
|
|
flags&=~T_FLAG;
|
|
oxpc=pc;
|
|
pc=readmemw(0,addr);
|
|
loadcs(readmemw(0,addr+2));
|
|
}
|
|
cycles-=70;
|
|
trap = 0;
|
|
}
|
|
|
|
void x86illegal()
|
|
{
|
|
uint16_t addr;
|
|
pclog("x86 illegal %04X %08X %04X:%08X %02X\n",msw,cr0,CS,pc,opcode);
|
|
// if (output)
|
|
// {
|
|
// dumpregs();
|
|
// exit(-1);
|
|
// }
|
|
x86_int(6);
|
|
}
|
|
|
|
|
|
#define NOTRM if (!(msw & 1) || (eflags & VM_FLAG))\
|
|
{ \
|
|
x86_int(6); \
|
|
break; \
|
|
}
|
|
|
|
void rep386(int fv)
|
|
{
|
|
uint8_t temp;
|
|
uint32_t c;//=CX;
|
|
uint8_t temp2;
|
|
uint16_t tempw,tempw2,of;
|
|
uint32_t ipc=oldpc;//pc-1;
|
|
uint32_t oldds;
|
|
uint32_t rep32=op32;
|
|
uint32_t templ,templ2;
|
|
int tempz;
|
|
int tempi;
|
|
|
|
flags_rebuild();
|
|
of = flags;
|
|
// if (output) pclog("REP32 %04X %04X ",use32,rep32);
|
|
startrep:
|
|
temp=opcode2=readmemb(cs,pc); pc++;
|
|
// if (firstrepcycle && temp==0xA5) pclog("REP MOVSW %06X:%04X %06X:%04X\n",ds,SI,es,DI);
|
|
// if (output) pclog("REP %02X %04X\n",temp,ipc);
|
|
c=(rep32&0x200)?ECX:CX;
|
|
/* if (rep32 && (msw&1))
|
|
{
|
|
if (temp!=0x67 && temp!=0x66 && (rep32|temp)!=0x1AB && (rep32|temp)!=0x3AB) pclog("32-bit REP %03X %08X %04X:%06X\n",temp|rep32,c,CS,pc);
|
|
}*/
|
|
switch (temp|rep32)
|
|
{
|
|
case 0xC3: case 0x1C3: case 0x2C3: case 0x3C3:
|
|
pc--;
|
|
break;
|
|
case 0x08:
|
|
pc=ipc+1;
|
|
break;
|
|
case 0x26: case 0x126: case 0x226: case 0x326: /*ES:*/
|
|
ea_seg = &_es;
|
|
goto startrep;
|
|
break;
|
|
case 0x2E: case 0x12E: case 0x22E: case 0x32E: /*CS:*/
|
|
ea_seg = &_cs;
|
|
goto startrep;
|
|
case 0x36: case 0x136: case 0x236: case 0x336: /*SS:*/
|
|
ea_seg = &_ss;
|
|
goto startrep;
|
|
case 0x3E: case 0x13E: case 0x23E: case 0x33E: /*DS:*/
|
|
ea_seg = &_ds;
|
|
goto startrep;
|
|
case 0x64: case 0x164: case 0x264: case 0x364: /*FS:*/
|
|
ea_seg = &_fs;
|
|
goto startrep;
|
|
case 0x65: case 0x165: case 0x265: case 0x365: /*GS:*/
|
|
ea_seg = &_gs;
|
|
goto startrep;
|
|
case 0x66: case 0x166: case 0x266: case 0x366: /*Data size prefix*/
|
|
rep32^=0x100;
|
|
goto startrep;
|
|
case 0x67: case 0x167: case 0x267: case 0x367: /*Address size prefix*/
|
|
rep32^=0x200;
|
|
goto startrep;
|
|
case 0x6C: case 0x16C: /*REP INSB*/
|
|
if (c>0)
|
|
{
|
|
checkio_perm(DX);
|
|
temp2=inb(DX);
|
|
writememb(es,DI,temp2);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) DI--;
|
|
else DI++;
|
|
c--;
|
|
cycles-=15;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x26C: case 0x36C: /*REP INSB*/
|
|
if (c>0)
|
|
{
|
|
checkio_perm(DX);
|
|
temp2=inb(DX);
|
|
writememb(es,EDI,temp2);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) EDI--;
|
|
else EDI++;
|
|
c--;
|
|
cycles-=15;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x6D: /*REP INSW*/
|
|
if (c>0)
|
|
{
|
|
tempw=inw(DX);
|
|
writememw(es,DI,tempw);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) DI-=2;
|
|
else DI+=2;
|
|
c--;
|
|
cycles-=15;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x16D: /*REP INSL*/
|
|
if (c>0)
|
|
{
|
|
templ=inl(DX);
|
|
writememl(es,DI,templ);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) DI-=4;
|
|
else DI+=4;
|
|
c--;
|
|
cycles-=15;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x26D: /*REP INSW*/
|
|
if (c>0)
|
|
{
|
|
tempw=inw(DX);
|
|
writememw(es,EDI,tempw);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) EDI-=2;
|
|
else EDI+=2;
|
|
c--;
|
|
cycles-=15;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x36D: /*REP INSL*/
|
|
if (c>0)
|
|
{
|
|
templ=inl(DX);
|
|
writememl(es,EDI,templ);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) EDI-=4;
|
|
else EDI+=4;
|
|
c--;
|
|
cycles-=15;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x6E: case 0x16E: /*REP OUTSB*/
|
|
if (c>0)
|
|
{
|
|
temp2 = readmemb(ea_seg->base, SI);
|
|
if (abrt) break;
|
|
checkio_perm(DX);
|
|
outb(DX,temp2);
|
|
if (flags&D_FLAG) SI--;
|
|
else SI++;
|
|
c--;
|
|
cycles-=14;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x26E: case 0x36E: /*REP OUTSB*/
|
|
if (c>0)
|
|
{
|
|
temp2 = readmemb(ea_seg->base, ESI);
|
|
if (abrt) break;
|
|
checkio_perm(DX);
|
|
outb(DX,temp2);
|
|
if (flags&D_FLAG) ESI--;
|
|
else ESI++;
|
|
c--;
|
|
cycles-=14;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x6F: /*REP OUTSW*/
|
|
if (c>0)
|
|
{
|
|
tempw = readmemw(ea_seg->base, SI);
|
|
if (abrt) break;
|
|
// pclog("OUTSW %04X -> %04X\n",SI,tempw);
|
|
outw(DX,tempw);
|
|
if (flags&D_FLAG) SI-=2;
|
|
else SI+=2;
|
|
c--;
|
|
cycles-=14;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x16F: /*REP OUTSL*/
|
|
if (c > 0)
|
|
{
|
|
templ = readmeml(ea_seg->base, SI);
|
|
if (abrt) break;
|
|
outl(DX, templ);
|
|
if (flags & D_FLAG) SI -= 4;
|
|
else SI += 4;
|
|
c--;
|
|
cycles -= 14;
|
|
}
|
|
if (c > 0) { firstrepcycle = 0; pc = ipc; }
|
|
else firstrepcycle = 1;
|
|
break;
|
|
case 0x26F: /*REP OUTSW*/
|
|
if (c>0)
|
|
{
|
|
tempw = readmemw(ea_seg->base, ESI);
|
|
if (abrt) break;
|
|
outw(DX,tempw);
|
|
if (flags&D_FLAG) ESI-=2;
|
|
else ESI+=2;
|
|
c--;
|
|
cycles-=14;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x36F: /*REP OUTSL*/
|
|
if (c > 0)
|
|
{
|
|
templ = readmeml(ea_seg->base, ESI);
|
|
if (abrt) break;
|
|
outl(DX, templ);
|
|
if (flags & D_FLAG) ESI -= 4;
|
|
else ESI += 4;
|
|
c--;
|
|
cycles -= 14;
|
|
}
|
|
if (c > 0) { firstrepcycle = 0; pc = ipc; }
|
|
else firstrepcycle = 1;
|
|
break;
|
|
case 0x90: case 0x190: /*REP NOP*/
|
|
case 0x290: case 0x390:
|
|
break;
|
|
case 0xA4: case 0x1A4: /*REP MOVSB*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, DI, DI);
|
|
temp2 = readmemb(ea_seg->base, SI); if (abrt) break;
|
|
writememb(es,DI,temp2); if (abrt) break;
|
|
// if (output==3) pclog("MOVSB %08X:%04X -> %08X:%04X %02X\n",ds,SI,es,DI,temp2);
|
|
if (flags&D_FLAG) { DI--; SI--; }
|
|
else { DI++; SI++; }
|
|
c--;
|
|
cycles-=(is486)?3:4;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2A4: case 0x3A4: /*REP MOVSB*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, EDI, EDI);
|
|
temp2 = readmemb(ea_seg->base, ESI); if (abrt) break;
|
|
writememb(es,EDI,temp2); if (abrt) break;
|
|
if (flags&D_FLAG) { EDI--; ESI--; }
|
|
else { EDI++; ESI++; }
|
|
c--;
|
|
cycles-=(is486)?3:4;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0xA5: /*REP MOVSW*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, DI, DI+1);
|
|
tempw = readmemw(ea_seg->base, SI); if (abrt) break;
|
|
writememw(es,DI,tempw); if (abrt) break;
|
|
if (flags&D_FLAG) { DI-=2; SI-=2; }
|
|
else { DI+=2; SI+=2; }
|
|
c--;
|
|
cycles-=(is486)?3:4;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x1A5: /*REP MOVSL*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, DI, DI+3);
|
|
templ = readmeml(ea_seg->base, SI); if (abrt) break;
|
|
// pclog("MOVSD %08X from %08X to %08X (%04X:%08X)\n", templ, ds+SI, es+DI, CS, pc);
|
|
writememl(es,DI,templ); if (abrt) break;
|
|
if (flags&D_FLAG) { DI-=4; SI-=4; }
|
|
else { DI+=4; SI+=4; }
|
|
c--;
|
|
cycles-=(is486)?3:4;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2A5: /*REP MOVSW*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, EDI, EDI+1);
|
|
tempw = readmemw(ea_seg->base, ESI); if (abrt) break;
|
|
writememw(es,EDI,tempw); if (abrt) break;
|
|
// if (output) pclog("Written %04X from %08X to %08X %i %08X %04X %08X %04X\n",tempw,ds+ESI,es+EDI,c,ds,ES,es,ES);
|
|
if (flags&D_FLAG) { EDI-=2; ESI-=2; }
|
|
else { EDI+=2; ESI+=2; }
|
|
c--;
|
|
cycles-=(is486)?3:4;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x3A5: /*REP MOVSL*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, EDI, EDI+3);
|
|
templ = readmeml(ea_seg->base, ESI); if (abrt) break;
|
|
// if ((EDI&0xFFFF0000)==0xA0000) cycles-=12;
|
|
writememl(es,EDI,templ); if (abrt) break;
|
|
// if (output) pclog("Load %08X from %08X to %08X %04X %08X %04X %08X\n",templ,ESI,EDI,DS,ds,ES,es);
|
|
if (flags&D_FLAG) { EDI-=4; ESI-=4; }
|
|
else { EDI+=4; ESI+=4; }
|
|
c--;
|
|
cycles-=(is486)?3:4;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0xA6: case 0x1A6: /*REP CMPSB*/
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
temp = readmemb(ea_seg->base, SI);
|
|
temp2=readmemb(es,DI);
|
|
if (abrt) { flags=of; break; }
|
|
if (flags&D_FLAG) { DI--; SI--; }
|
|
else { DI++; SI++; }
|
|
c--;
|
|
cycles-=(is486)?7:9;
|
|
setsub8(temp,temp2);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2A6: case 0x3A6: /*REP CMPSB*/
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
temp = readmemb(ea_seg->base, ESI);
|
|
temp2=readmemb(es,EDI);
|
|
if (abrt) { flags=of; break; }
|
|
if (flags&D_FLAG) { EDI--; ESI--; }
|
|
else { EDI++; ESI++; }
|
|
c--;
|
|
cycles-=(is486)?7:9;
|
|
setsub8(temp,temp2);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0xA7: /*REP CMPSW*/
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
// pclog("CMPSW %05X %05X %08X %08X ", ds+SI, es+DI, readlookup2[(ds+SI)>>12], readlookup2[(es+DI)>>12]);
|
|
tempw = readmemw(ea_seg->base, SI);
|
|
tempw2=readmemw(es,DI);
|
|
// pclog("%04X %04X %02X\n", tempw, tempw2, ram[8]);
|
|
|
|
if (abrt) { flags=of; break; }
|
|
if (flags&D_FLAG) { DI-=2; SI-=2; }
|
|
else { DI+=2; SI+=2; }
|
|
c--;
|
|
cycles-=(is486)?7:9;
|
|
setsub16(tempw,tempw2);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x1A7: /*REP CMPSL*/
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
templ = readmeml(ea_seg->base, SI);
|
|
templ2=readmeml(es,DI);
|
|
if (abrt) { flags=of; break; }
|
|
if (flags&D_FLAG) { DI-=4; SI-=4; }
|
|
else { DI+=4; SI+=4; }
|
|
c--;
|
|
cycles-=(is486)?7:9;
|
|
setsub32(templ,templ2);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2A7: /*REP CMPSW*/
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
tempw = readmemw(ea_seg->base, ESI);
|
|
tempw2=readmemw(es,EDI);
|
|
if (abrt) { flags=of; break; }
|
|
if (flags&D_FLAG) { EDI-=2; ESI-=2; }
|
|
else { EDI+=2; ESI+=2; }
|
|
c--;
|
|
cycles-=(is486)?7:9;
|
|
setsub16(tempw,tempw2);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x3A7: /*REP CMPSL*/
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
templ = readmeml(ea_seg->base, ESI);
|
|
templ2=readmeml(es,EDI);
|
|
if (abrt) { flags=of; break; }
|
|
if (flags&D_FLAG) { EDI-=4; ESI-=4; }
|
|
else { EDI+=4; ESI+=4; }
|
|
c--;
|
|
cycles-=(is486)?7:9;
|
|
setsub32(templ,templ2);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
|
|
case 0xAA: case 0x1AA: /*REP STOSB*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, DI, DI);
|
|
writememb(es,DI,AL);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) DI--;
|
|
else DI++;
|
|
c--;
|
|
cycles-=(is486)?4:5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2AA: case 0x3AA: /*REP STOSB*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, EDI, EDI);
|
|
writememb(es,EDI,AL);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) EDI--;
|
|
else EDI++;
|
|
c--;
|
|
cycles-=(is486)?4:5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0xAB: /*REP STOSW*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, DI, DI+1);
|
|
writememw(es,DI,AX);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) DI-=2;
|
|
else DI+=2;
|
|
c--;
|
|
cycles-=(is486)?4:5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2AB: /*REP STOSW*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, EDI, EDI+1);
|
|
writememw(es,EDI,AX);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) EDI-=2;
|
|
else EDI+=2;
|
|
c--;
|
|
cycles-=(is486)?4:5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x1AB: /*REP STOSL*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, DI, DI+3);
|
|
writememl(es,DI,EAX);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) DI-=4;
|
|
else DI+=4;
|
|
c--;
|
|
cycles-=(is486)?4:5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x3AB: /*REP STOSL*/
|
|
if (c>0)
|
|
{
|
|
CHECK_WRITE_REP(&_es, EDI, EDI+3);
|
|
writememl(es,EDI,EAX);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) EDI-=4;
|
|
else EDI+=4;
|
|
c--;
|
|
cycles-=(is486)?4:5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0xAC: case 0x1AC: /*REP LODSB*/
|
|
// if (ds==0xFFFFFFFF) pclog("Null selector REP LODSB %04X(%06X):%06X\n",CS,cs,pc);
|
|
if (c>0)
|
|
{
|
|
AL = readmemb(ea_seg->base, SI);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) SI--;
|
|
else SI++;
|
|
c--;
|
|
cycles-=5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2AC: case 0x3AC: /*REP LODSB*/
|
|
// if (ds==0xFFFFFFFF) pclog("Null selector REP LODSB %04X(%06X):%06X\n",CS,cs,pc);
|
|
if (c>0)
|
|
{
|
|
AL = readmemb(ea_seg->base, ESI);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) ESI--;
|
|
else ESI++;
|
|
c--;
|
|
cycles-=5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0xAD: /*REP LODSW*/
|
|
// if (ds==0xFFFFFFFF) pclog("Null selector REP LODSW %04X(%06X):%06X\n",CS,cs,pc);
|
|
if (c>0)
|
|
{
|
|
AX = readmemw(ea_seg->base, SI);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) SI-=2;
|
|
else SI+=2;
|
|
c--;
|
|
cycles-=5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x1AD: /*REP LODSL*/
|
|
// if (ds==0xFFFFFFFF) pclog("Null selector REP LODSL %04X(%06X):%06X\n",CS,cs,pc);
|
|
if (c>0)
|
|
{
|
|
EAX = readmeml(ea_seg->base, SI);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) SI-=4;
|
|
else SI+=4;
|
|
c--;
|
|
cycles-=5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2AD: /*REP LODSW*/
|
|
// if (ds==0xFFFFFFFF) pclog("Null selector REP LODSW %04X(%06X):%06X\n",CS,cs,pc);
|
|
if (c>0)
|
|
{
|
|
AX = readmemw(ea_seg->base, ESI);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) ESI-=2;
|
|
else ESI+=2;
|
|
c--;
|
|
cycles-=5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x3AD: /*REP LODSL*/
|
|
// if (ds==0xFFFFFFFF) pclog("Null selector REP LODSL %04X(%06X):%06X\n",CS,cs,pc);
|
|
if (c>0)
|
|
{
|
|
EAX = readmeml(ea_seg->base, ESI);
|
|
if (abrt) break;
|
|
if (flags&D_FLAG) ESI-=4;
|
|
else ESI+=4;
|
|
c--;
|
|
cycles-=5;
|
|
}
|
|
if (c>0) { firstrepcycle=0; pc=ipc; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0xAE: case 0x1AE: /*REP SCASB*/
|
|
// if (es==0xFFFFFFFF) pclog("Null selector REP SCASB %04X(%06X):%06X\n",CS,cs,pc);
|
|
// tempz=(fv)?1:0;
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
temp2=readmemb(es,DI);
|
|
if (abrt) { flags=of; break; }
|
|
setsub8(AL,temp2);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
if (flags&D_FLAG) DI--;
|
|
else DI++;
|
|
c--;
|
|
cycles-=(is486)?5:8;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2AE: case 0x3AE: /*REP SCASB*/
|
|
// if (es==0xFFFFFFFF) pclog("Null selector REP SCASB %04X(%06X):%06X\n",CS,cs,pc);
|
|
// tempz=(fv)?1:0;
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
temp2=readmemb(es,EDI);
|
|
if (abrt) { flags=of; break; }
|
|
// if (output) pclog("Compare %02X,%02X\n",temp2,AL);
|
|
setsub8(AL,temp2);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
if (flags&D_FLAG) EDI--;
|
|
else EDI++;
|
|
c--;
|
|
cycles-=(is486)?5:8;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0xAF: /*REP SCASW*/
|
|
// if (es==0xFFFFFFFF) pclog("Null selector REP SCASW %04X(%06X):%06X\n",CS,cs,pc);
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
tempw=readmemw(es,DI);
|
|
if (abrt) { flags=of; break; }
|
|
setsub16(AX,tempw);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
if (flags&D_FLAG) DI-=2;
|
|
else DI+=2;
|
|
c--;
|
|
cycles-=(is486)?5:8;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x1AF: /*REP SCASL*/
|
|
// if (es==0xFFFFFFFF) pclog("Null selector REP SCASL %04X(%06X):%06X\n",CS,cs,pc);
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
templ=readmeml(es,DI);
|
|
if (abrt) { flags=of; break; }
|
|
setsub32(EAX,templ);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
if (flags&D_FLAG) DI-=4;
|
|
else DI+=4;
|
|
c--;
|
|
cycles-=(is486)?5:8;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x2AF: /*REP SCASW*/
|
|
// if (es==0xFFFFFFFF) pclog("Null selector REP SCASW %04X(%06X):%06X\n",CS,cs,pc);
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
tempw=readmemw(es,EDI);
|
|
if (abrt) { flags=of; break; }
|
|
setsub16(AX,tempw);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
if (flags&D_FLAG) EDI-=2;
|
|
else EDI+=2;
|
|
c--;
|
|
cycles-=(is486)?5:8;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
case 0x3AF: /*REP SCASL*/
|
|
// if (es==0xFFFFFFFF) pclog("Null selector REP SCASL %04X(%06X):%06X\n",CS,cs,pc);
|
|
tempz = (fv) ? 1 : 0;
|
|
if ((c>0) && (fv==tempz))
|
|
{
|
|
templ=readmeml(es,EDI);
|
|
if (abrt) { flags=of; break; }
|
|
setsub32(EAX,templ);
|
|
tempz = (ZF_SET()) ? 1 : 0;
|
|
if (flags&D_FLAG) EDI-=4;
|
|
else EDI+=4;
|
|
c--;
|
|
cycles-=(is486)?5:8;
|
|
}
|
|
if ((c>0) && (fv==tempz)) { pc=ipc; firstrepcycle=0; }
|
|
else firstrepcycle=1;
|
|
break;
|
|
|
|
|
|
default:
|
|
pc=ipc;
|
|
cycles-=20;
|
|
pclog("Bad REP %02X %i\n", temp, rep32 >> 8);
|
|
x86illegal();
|
|
}
|
|
if (rep32&0x200) ECX=c;
|
|
else CX=c;
|
|
// if (output) pclog("%03X %03X\n",rep32,use32);
|
|
}
|
|
|
|
int checkio(int port)
|
|
{
|
|
uint16_t t;
|
|
uint8_t d;
|
|
cpl_override = 1;
|
|
t = readmemw(tr.base, 0x66);
|
|
cpl_override = 0;
|
|
// pclog("CheckIO 1 %08X\n",tr.base);
|
|
if (abrt) return 0;
|
|
// pclog("CheckIO %04X %01X %01X %02X %04X %04X %08X ",CS,CPL,IOPL,port,t,t+(port>>3),tr.base+t+(port>>3));
|
|
if ((t+(port>>3))>tr.limit) return 1;
|
|
cpl_override = 1;
|
|
d = readmemb386l(0, tr.base + t + (port >> 3));
|
|
// d=readmemb(tr.base,t+(port>>3));
|
|
cpl_override = 0;
|
|
// pclog("%02X %02X\n",d,d&(1<<(port&7)));
|
|
return d&(1<<(port&7));
|
|
}
|
|
|
|
#define getbytef() ((uint8_t)(fetchdat)); pc++
|
|
#define getwordf() ((uint16_t)(fetchdat)); pc+=2
|
|
#define getbyte2f() ((uint8_t)(fetchdat>>8)); pc++
|
|
#define getword2f() ((uint16_t)(fetchdat>>8)); pc+=2
|
|
int xout=0;
|
|
|
|
|
|
#define divexcp() { \
|
|
pclog("Divide exception at %04X(%06X):%04X\n",CS,cs,pc); \
|
|
x86_int(0); \
|
|
}
|
|
|
|
void divl(uint32_t val)
|
|
{
|
|
if (val==0)
|
|
{
|
|
divexcp();
|
|
return;
|
|
}
|
|
uint64_t num=(((uint64_t)EDX)<<32)|EAX;
|
|
uint64_t quo=num/val;
|
|
uint32_t rem=num%val;
|
|
uint32_t quo32=(uint32_t)(quo&0xFFFFFFFF);
|
|
if (quo!=(uint64_t)quo32)
|
|
{
|
|
divexcp();
|
|
return;
|
|
}
|
|
EDX=rem;
|
|
EAX=quo32;
|
|
}
|
|
void idivl(int32_t val)
|
|
{
|
|
if (val==0)
|
|
{
|
|
divexcp();
|
|
return;
|
|
}
|
|
int64_t num=(((uint64_t)EDX)<<32)|EAX;
|
|
int64_t quo=num/val;
|
|
int32_t rem=num%val;
|
|
int32_t quo32=(int32_t)(quo&0xFFFFFFFF);
|
|
if (quo!=(int64_t)quo32)
|
|
{
|
|
divexcp();
|
|
return;
|
|
}
|
|
EDX=rem;
|
|
EAX=quo32;
|
|
}
|
|
|
|
|
|
void cpu_386_flags_extract()
|
|
{
|
|
flags_extract();
|
|
}
|
|
void cpu_386_flags_rebuild()
|
|
{
|
|
flags_rebuild();
|
|
}
|
|
|
|
int oldi;
|
|
|
|
uint32_t testr[9];
|
|
int dontprint=0;
|
|
|
|
#undef NOTRM
|
|
#define NOTRM if (!(msw & 1) || (eflags & VM_FLAG))\
|
|
{ \
|
|
x86_int(6); \
|
|
return 0; \
|
|
}
|
|
|
|
#include "386_ops.h"
|
|
|
|
#undef NOTRM
|
|
#define NOTRM if (!(msw & 1) || (eflags & VM_FLAG))\
|
|
{ \
|
|
x86_int(6); \
|
|
break; \
|
|
}
|
|
|
|
void exec386(int cycs)
|
|
{
|
|
uint8_t temp;
|
|
uint32_t addr;
|
|
int tempi;
|
|
int cycdiff;
|
|
int oldcyc;
|
|
|
|
cycles+=cycs;
|
|
// output=3;
|
|
while (cycles>0)
|
|
{
|
|
cycdiff=0;
|
|
oldcyc=cycles;
|
|
timer_start_period(cycles);
|
|
// pclog("%i %02X\n", ins, ram[8]);
|
|
while (cycdiff<100)
|
|
{
|
|
/* testr[0]=EAX; testr[1]=EBX; testr[2]=ECX; testr[3]=EDX;
|
|
testr[4]=ESI; testr[5]=EDI; testr[6]=EBP; testr[7]=ESP;*/
|
|
/* testr[8]=flags;*/
|
|
// oldcs2=oldcs;
|
|
// oldpc2=oldpc;
|
|
opcode_realstart:
|
|
oldcs=CS;
|
|
oldpc=pc;
|
|
oldcpl=CPL;
|
|
op32=use32;
|
|
|
|
dontprint=0;
|
|
|
|
ea_seg = &_ds;
|
|
ssegs = 0;
|
|
|
|
opcodestart:
|
|
fetchdat = fastreadl(cs + pc);
|
|
|
|
if (!abrt)
|
|
{
|
|
tempc = CF_SET();
|
|
trap = flags & T_FLAG;
|
|
opcode = fetchdat & 0xFF;
|
|
fetchdat >>= 8;
|
|
|
|
if (output == 3)
|
|
{
|
|
pclog("%04X(%06X):%04X : %08X %08X %08X %08X %04X %04X %04X(%08X) %04X %04X %04X(%08X) %08X %08X %08X SP=%04X:%08X %02X %04X %i %08X %08X %i %i %02X %02X %02X %02X %02X %f %02X%02X %02X%02X %02X%02X %02X\n",CS,cs,pc,EAX,EBX,ECX,EDX,CS,DS,ES,es,FS,GS,SS,ss,EDI,ESI,EBP,SS,ESP,opcode,flags,ins,0, ldt.base, CPL, stack32, pic.pend, pic.mask, pic.mask2, pic2.pend, pic2.mask, pit.c[0], ram[0xB270+0x3F5], ram[0xB270+0x3F4], ram[0xB270+0x3F7], ram[0xB270+0x3F6], ram[0xB270+0x3F9], ram[0xB270+0x3F8], ram[0x4430+0x0D49]);
|
|
}
|
|
pc++;
|
|
if (x86_opcodes[(opcode | op32) & 0x3ff](fetchdat))
|
|
goto opcodestart;
|
|
}
|
|
|
|
if (!use32) pc &= 0xffff;
|
|
|
|
if (abrt)
|
|
{
|
|
flags_rebuild();
|
|
// pclog("Abort\n");
|
|
// if (CS == 0x228) pclog("Abort at %04X:%04X - %i %i %i\n",CS,pc,notpresent,nullseg,abrt);
|
|
/* if (testr[0]!=EAX) pclog("EAX corrupted %08X\n",pc);
|
|
if (testr[1]!=EBX) pclog("EBX corrupted %08X\n",pc);
|
|
if (testr[2]!=ECX) pclog("ECX corrupted %08X\n",pc);
|
|
if (testr[3]!=EDX) pclog("EDX corrupted %08X\n",pc);
|
|
if (testr[4]!=ESI) pclog("ESI corrupted %08X\n",pc);
|
|
if (testr[5]!=EDI) pclog("EDI corrupted %08X\n",pc);
|
|
if (testr[6]!=EBP) pclog("EBP corrupted %08X\n",pc);
|
|
if (testr[7]!=ESP) pclog("ESP corrupted %08X\n",pc);*/
|
|
/* if (testr[8]!=flags) pclog("FLAGS corrupted %08X\n",pc);*/
|
|
tempi = abrt;
|
|
abrt = 0;
|
|
x86_doabrt(tempi);
|
|
if (abrt)
|
|
{
|
|
abrt = 0;
|
|
CS = oldcs;
|
|
pc = oldpc;
|
|
pclog("Double fault %i\n", ins);
|
|
pmodeint(8, 0);
|
|
if (abrt)
|
|
{
|
|
abrt = 0;
|
|
softresetx86();
|
|
pclog("Triple fault - reset\n");
|
|
}
|
|
}
|
|
}
|
|
cycdiff=oldcyc-cycles;
|
|
|
|
if (trap)
|
|
{
|
|
flags_rebuild();
|
|
// oldpc=pc;
|
|
// oldcs=CS;
|
|
if (msw&1)
|
|
{
|
|
pmodeint(1,0);
|
|
}
|
|
else
|
|
{
|
|
writememw(ss,(SP-2)&0xFFFF,flags);
|
|
writememw(ss,(SP-4)&0xFFFF,CS);
|
|
writememw(ss,(SP-6)&0xFFFF,pc);
|
|
SP-=6;
|
|
addr = (1 << 2) + idt.base;
|
|
flags&=~I_FLAG;
|
|
flags&=~T_FLAG;
|
|
pc=readmemw(0,addr);
|
|
loadcs(readmemw(0,addr+2));
|
|
}
|
|
}
|
|
else if (nmi && nmi_enable)
|
|
{
|
|
oldpc = pc;
|
|
oldcs = CS;
|
|
// pclog("NMI\n");
|
|
x86_int(2);
|
|
nmi_enable = 0;
|
|
}
|
|
else if ((flags&I_FLAG) && pic_intpending)
|
|
{
|
|
temp=picinterrupt();
|
|
if (temp!=0xFF)
|
|
{
|
|
// if (temp == 0x54) pclog("Take int 54\n");
|
|
// if (output) output=3;
|
|
// if (temp == 0xd) pclog("Hardware int %02X %i %04X(%08X):%08X\n",temp,ins, CS,cs,pc);
|
|
// if (temp==0x54) output=3;
|
|
flags_rebuild();
|
|
if (msw&1)
|
|
{
|
|
pmodeint(temp,0);
|
|
}
|
|
else
|
|
{
|
|
writememw(ss,(SP-2)&0xFFFF,flags);
|
|
writememw(ss,(SP-4)&0xFFFF,CS);
|
|
writememw(ss,(SP-6)&0xFFFF,pc);
|
|
SP-=6;
|
|
addr = (temp << 2) + idt.base;
|
|
flags&=~I_FLAG;
|
|
flags&=~T_FLAG;
|
|
oxpc=pc;
|
|
pc=readmemw(0,addr);
|
|
loadcs(readmemw(0,addr+2));
|
|
// if (temp==0x76) pclog("INT to %04X:%04X\n",CS,pc);
|
|
}
|
|
// pclog("Now at %04X(%08X):%08X\n", CS, cs, pc);
|
|
}
|
|
}
|
|
|
|
ins++;
|
|
insc++;
|
|
|
|
if (timetolive)
|
|
{
|
|
timetolive--;
|
|
if (!timetolive)
|
|
fatal("Life expired\n");
|
|
}
|
|
}
|
|
|
|
tsc += cycdiff;
|
|
|
|
timer_end_period(cycles);
|
|
}
|
|
}
|