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Implemented selector limits on some instructions - fixes LBA2.

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GPFs in real mode now work.
Selectors correctly zeroed on far return to lower privilege.
This commit is contained in:
TomW 2014-08-13 20:33:56 +01:00
commit cd2c3b47ed
16 changed files with 404 additions and 462 deletions
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14
src/808x.c
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@ -588,15 +588,15 @@ chdir(pcempath);
printf("In %s mode\n",(msw&1)?((eflags&VM_FLAG)?"V86":"protected"):"real");
else
printf("In %s mode\n",(msw&1)?"protected":"real");
printf("CS : base=%06X limit=%04X access=%02X\n",cs,_cs.limit,_cs.access);
printf("DS : base=%06X limit=%04X access=%02X\n",ds,_ds.limit,_ds.access);
printf("ES : base=%06X limit=%04X access=%02X\n",es,_es.limit,_es.access);
printf("CS : base=%06X limit=%08X access=%02X limit_low=%08X limit_high=%08X\n",cs,_cs.limit,_cs.access, _cs.limit_low, _cs.limit_high);
printf("DS : base=%06X limit=%08X access=%02X limit_low=%08X limit_high=%08X\n",ds,_ds.limit,_ds.access, _ds.limit_low, _ds.limit_high);
printf("ES : base=%06X limit=%08X access=%02X limit_low=%08X limit_high=%08X\n",es,_es.limit,_es.access, _es.limit_low, _es.limit_high);
if (is386)
{
printf("FS : base=%06X limit=%04X access=%02X\n",fs,_fs.limit,_fs.access);
printf("GS : base=%06X limit=%04X access=%02X\n",gs,_gs.limit,_gs.access);
printf("FS : base=%06X limit=%08X access=%02X limit_low=%08X limit_high=%08X\n",fs,_fs.limit,_fs.access, _fs.limit_low, _fs.limit_high);
printf("GS : base=%06X limit=%08X access=%02X limit_low=%08X limit_high=%08X\n",gs,_gs.limit,_gs.access, _gs.limit_low, _gs.limit_high);
}
printf("SS : base=%06X limit=%04X access=%02X\n",ss,_ss.limit,_ss.access);
printf("SS : base=%06X limit=%08X access=%02X limit_low=%08X limit_high=%08X\n",ss,_ss.limit,_ss.access, _ss.limit_low, _ss.limit_high);
printf("GDT : base=%06X limit=%04X\n",gdt.base,gdt.limit);
printf("LDT : base=%06X limit=%04X\n",ldt.base,ldt.limit);
printf("IDT : base=%06X limit=%04X\n",idt.base,idt.limit);
@ -646,6 +646,7 @@ void resetx86()
ESP=0;
mmu_perm=4;
memset(inscounts, 0, sizeof(inscounts));
x86seg_reset();
}
void softresetx86()
@ -665,6 +666,7 @@ void softresetx86()
//rammask=0xFFFFFFFF;
flags=2;
idt.base = 0;
x86seg_reset();
}
static void setznp8(uint8_t val)