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[SOFT386]

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Implement the INT, INT3 and INTO instructions (all 3 in Soft386OpcodeInt).


svn path=/branches/ntvdm/; revision=60256
This commit is contained in:
Aleksandar Andrejevic 2013-09-21 00:18:59 +00:00
parent 1d3d2fc07a
commit 34157419d7
2 changed files with 59 additions and 21 deletions
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78
lib/soft386/opcodes.c
View file

@ -228,9 +228,9 @@ Soft386OpcodeHandlers[SOFT386_NUM_OPCODE_HANDLERS] =
Soft386OpcodeLeave,
Soft386OpcodeRetFarImm,
Soft386OpcodeRetFar,
Soft386OpcodeInt3,
Soft386OpcodeInt,
Soft386OpcodeIntOverflow,
Soft386OpcodeInt,
Soft386OpcodeInt,
Soft386OpcodeIret,
NULL, // TODO: OPCODE 0xD0 NOT SUPPORTED
NULL, // TODO: OPCODE 0xD1 NOT SUPPORTED
@ -4297,28 +4297,68 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeRetFar)
return FALSE;
}
SOFT386_OPCODE_HANDLER(Soft386OpcodeInt3)
{
// TODO: NOT IMPLEMENTED
UNIMPLEMENTED;
return FALSE;
}
SOFT386_OPCODE_HANDLER(Soft386OpcodeInt)
{
// TODO: NOT IMPLEMENTED
UNIMPLEMENTED;
UCHAR IntNum;
SOFT386_IDT_ENTRY IdtEntry;
return FALSE;
}
switch (Opcode)
{
case 0xCC:
{
/* This is the INT3 instruction */
IntNum = 3;
break;
}
SOFT386_OPCODE_HANDLER(Soft386OpcodeIntOverflow)
{
// TODO: NOT IMPLEMENTED
UNIMPLEMENTED;
case 0xCD:
{
/* Fetch the interrupt number */
if (!Soft386FetchByte(State, &IntNum))
{
/* Exception occurred */
return FALSE;
}
return FALSE;
break;
}
case 0xCE:
{
/* Don't do anything if OF is cleared */
if (!State->Flags.Of) return TRUE;
/* Exception #OF */
IntNum = SOFT386_EXCEPTION_OF;
break;
}
default:
{
/* Should not happen */
ASSERT(FALSE);
}
}
/* Get the interrupt vector */
if (!Soft386GetIntVector(State, IntNum, &IdtEntry))
{
/* Exception occurred */
return FALSE;
}
/* Perform the interrupt */
if (!Soft386InterruptInternal(State,
IdtEntry.Selector,
MAKELONG(IdtEntry.Offset, IdtEntry.OffsetHigh),
IdtEntry.Type))
{
/* Exception occurred */
return FALSE;
}
return TRUE;
}
SOFT386_OPCODE_HANDLER(Soft386OpcodeIret)

2
lib/soft386/opcodes.h
View file

@ -122,9 +122,7 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeEnter);
SOFT386_OPCODE_HANDLER(Soft386OpcodeLeave);
SOFT386_OPCODE_HANDLER(Soft386OpcodeRetFarImm);
SOFT386_OPCODE_HANDLER(Soft386OpcodeRetFar);
SOFT386_OPCODE_HANDLER(Soft386OpcodeInt3);
SOFT386_OPCODE_HANDLER(Soft386OpcodeInt);
SOFT386_OPCODE_HANDLER(Soft386OpcodeIntOverflow);
SOFT386_OPCODE_HANDLER(Soft386OpcodeIret);
SOFT386_OPCODE_HANDLER(Soft386OpcodeAam);
SOFT386_OPCODE_HANDLER(Soft386OpcodeAad);