e737d2fa45
CR3 no longer masks values written to it. Real mode interrupts now take IDT base into account. Fixes 'huge unreal' mode (flat assembler).
232 lines
6 KiB
C
232 lines
6 KiB
C
static int opMOV_r_CRx_a16(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load from CRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_16(fetchdat);
|
|
switch (reg)
|
|
{
|
|
case 0:
|
|
regs[rm].l = cr0;
|
|
if (is486) regs[rm].l |= 0x10; /*ET hardwired on 486*/
|
|
break;
|
|
case 2:
|
|
regs[rm].l = cr2;
|
|
break;
|
|
case 3:
|
|
regs[rm].l = cr3;
|
|
break;
|
|
default:
|
|
pclog("Bad read of CR%i %i\n",rmdat&7,reg);
|
|
pc = oldpc;
|
|
x86illegal();
|
|
break;
|
|
}
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
static int opMOV_r_CRx_a32(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load from CRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_32(fetchdat);
|
|
switch (reg)
|
|
{
|
|
case 0:
|
|
regs[rm].l = cr0;
|
|
if (is486) regs[rm].l |= 0x10; /*ET hardwired on 486*/
|
|
break;
|
|
case 2:
|
|
regs[rm].l = cr2;
|
|
break;
|
|
case 3:
|
|
regs[rm].l = cr3;
|
|
break;
|
|
default:
|
|
pclog("Bad read of CR%i %i\n",rmdat&7,reg);
|
|
pc = oldpc;
|
|
x86illegal();
|
|
break;
|
|
}
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
|
|
static int opMOV_r_DRx_a16(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load from DRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_16(fetchdat);
|
|
regs[rm].l = 0;
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
static int opMOV_r_DRx_a32(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load from DRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_32(fetchdat);
|
|
regs[rm].l = 0;
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
|
|
static int opMOV_CRx_r_a16(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load CRx\n");
|
|
x86gpf(NULL,0);
|
|
return 0;
|
|
}
|
|
fetch_ea_16(fetchdat);
|
|
switch (reg)
|
|
{
|
|
case 0:
|
|
if ((regs[rm].l ^ cr0) & 0x80000001) flushmmucache();
|
|
cr0 = regs[rm].l;
|
|
if (cpu_16bitbus) cr0 |= 0x10;
|
|
if (!(cr0 & 0x80000000)) mmu_perm=4;
|
|
break;
|
|
case 2:
|
|
cr2 = regs[rm].l;
|
|
break;
|
|
case 3:
|
|
cr3 = regs[rm].l;
|
|
flushmmucache();
|
|
break;
|
|
default:
|
|
pclog("Bad load CR%i\n", reg);
|
|
pc = oldpc;
|
|
x86illegal();
|
|
break;
|
|
}
|
|
cycles -= 10;
|
|
return 0;
|
|
}
|
|
static int opMOV_CRx_r_a32(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load CRx\n");
|
|
x86gpf(NULL,0);
|
|
return 0;
|
|
}
|
|
fetch_ea_32(fetchdat);
|
|
switch (reg)
|
|
{
|
|
case 0:
|
|
if ((regs[rm].l ^ cr0) & 0x80000001) flushmmucache();
|
|
cr0 = regs[rm].l;
|
|
if (cpu_16bitbus) cr0 |= 0x10;
|
|
if (!(cr0 & 0x80000000)) mmu_perm=4;
|
|
break;
|
|
case 2:
|
|
cr2 = regs[rm].l;
|
|
break;
|
|
case 3:
|
|
cr3 = regs[rm].l;
|
|
flushmmucache();
|
|
break;
|
|
default:
|
|
pclog("Bad load CR%i\n", reg);
|
|
pc = oldpc;
|
|
x86illegal();
|
|
break;
|
|
}
|
|
cycles -= 10;
|
|
return 0;
|
|
}
|
|
|
|
static int opMOV_DRx_r_a16(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load DRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_16(fetchdat);
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
static int opMOV_DRx_r_a32(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load DRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_16(fetchdat);
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
|
|
static int opMOV_r_TRx_a16(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load from TRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_16(fetchdat);
|
|
regs[rm].l = 0;
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
static int opMOV_r_TRx_a32(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load from TRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_32(fetchdat);
|
|
regs[rm].l = 0;
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
|
|
static int opMOV_TRx_r_a16(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load TRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_16(fetchdat);
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
static int opMOV_TRx_r_a32(uint32_t fetchdat)
|
|
{
|
|
if ((CPL || (eflags&VM_FLAG)) && (cr0&1))
|
|
{
|
|
pclog("Can't load TRx\n");
|
|
x86gpf(NULL, 0);
|
|
return 0;
|
|
}
|
|
fetch_ea_16(fetchdat);
|
|
cycles -= 6;
|
|
return 0;
|
|
}
|
|
|