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[SOFT386]

Browse source 
Fix prefix handling.


svn path=/branches/ntvdm/; revision=60620
This commit is contained in:
Aleksandar Andrejevic 2013-10-11 20:48:19 +00:00
parent 47390630ed
commit da5b8fc439
1 changed files with 29 additions and 20 deletions
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49
lib/soft386/opcodes.c
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@ -466,12 +466,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeIncrement)
ULONG Value;
BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
@ -509,12 +510,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeDecrement)
ULONG Value;
BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
@ -618,12 +620,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeExchangeEax)
INT Reg = Opcode & 0x07;
BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
@ -974,12 +977,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeIn)
/* Make sure this is the right instruction */
ASSERT((Opcode & 0xF7) == 0xE5);
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
@ -1073,12 +1077,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeOut)
/* Make sure this is the right instruction */
ASSERT((Opcode & 0xF7) == 0xE7);
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
@ -4533,12 +4538,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeCwde)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0x98);
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
@ -4573,12 +4579,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeCdq)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0x99);
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
@ -4825,7 +4832,7 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeRet)
return FALSE;
}
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
@ -5538,7 +5545,7 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeJecxz)
return FALSE;
}
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
@ -5570,12 +5577,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeCall)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xE8);
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
@ -5635,12 +5643,13 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeJmp)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xE9);
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
if (State->PrefixFlags & SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else if (State->PrefixFlags != 0)
if (State->PrefixFlags & SOFT386_PREFIX_LOCK)
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);