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[SOFT386]

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Implement Soft386OpcodeTestAl and Soft386OpcodeTestEax.
These functions were declared and referenced, but never defined.
Why the compiler allowed that without even a warning remains a mystery.


svn path=/branches/ntvdm/; revision=60183
This commit is contained in:
Aleksandar Andrejevic 2013-09-17 20:28:26 +00:00
parent b78a6cb212
commit bbb37c9152
1 changed files with 101 additions and 0 deletions
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101
lib/soft386/opcodes.c
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@ -2436,6 +2436,107 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeTestModrm)
return TRUE;
}
SOFT386_OPCODE_HANDLER(Soft386OpcodeTestAl)
{
UCHAR FirstValue = State->GeneralRegs[SOFT386_REG_EAX].LowByte;
UCHAR SecondValue, Result;
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xA8);
if (State->PrefixFlags)
{
/* This opcode doesn't take any prefixes */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
return FALSE;
}
if (!Soft386FetchByte(State, &SecondValue))
{
/* Exception occurred */
return FALSE;
}
/* Calculate the result */
Result = FirstValue & SecondValue;
/* Update the flags */
State->Flags.Cf = FALSE;
State->Flags.Of = FALSE;
State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
State->Flags.Sf = (Result & SIGN_FLAG_BYTE) ? TRUE : FALSE;
State->Flags.Pf = Soft386CalculateParity(Result);
/* The result is discarded */
return TRUE;
}
SOFT386_OPCODE_HANDLER(Soft386OpcodeTestEax)
{
BOOLEAN Size = State->SegmentRegs[SOFT386_REG_CS].Size;
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xA9);
if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
{
/* The OPSIZE prefix toggles the size */
Size = !Size;
}
else
{
/* Invalid prefix */
Soft386Exception(State, SOFT386_EXCEPTION_UD);
return FALSE;
}
if (Size)
{
ULONG FirstValue = State->GeneralRegs[SOFT386_REG_EAX].Long;
ULONG SecondValue, Result;
if (!Soft386FetchDword(State, &SecondValue))
{
/* Exception occurred */
return FALSE;
}
/* Calculate the result */
Result = FirstValue & SecondValue;
/* Update the flags */
State->Flags.Cf = FALSE;
State->Flags.Of = FALSE;
State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
State->Flags.Sf = (Result & SIGN_FLAG_LONG) ? TRUE : FALSE;
State->Flags.Pf = Soft386CalculateParity(Result);
}
else
{
USHORT FirstValue = State->GeneralRegs[SOFT386_REG_EAX].LowWord;
USHORT SecondValue, Result;
if (!Soft386FetchWord(State, &SecondValue))
{
/* Exception occurred */
return FALSE;
}
/* Calculate the result */
Result = FirstValue & SecondValue;
/* Update the flags */
State->Flags.Cf = FALSE;
State->Flags.Of = FALSE;
State->Flags.Zf = (Result == 0) ? TRUE : FALSE;
State->Flags.Sf = (Result & SIGN_FLAG_WORD) ? TRUE : FALSE;
State->Flags.Pf = Soft386CalculateParity(Result);
}
/* The result is discarded */
return TRUE;
}
SOFT386_OPCODE_HANDLER(Soft386OpcodeXchgByteModrm)
{
UCHAR FirstValue, SecondValue;