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[FAST486]

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Addendum to r67702.


svn path=/trunk/; revision=67703
This commit is contained in:
Aleksandar Andrejevic 2015-05-12 21:37:10 +00:00
parent 84ed5d3cf2
commit dafeadd7ab
1 changed files with 8 additions and 48 deletions
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56
reactos/lib/fast486/opcodes.c
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@ -635,12 +635,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeClearCarry)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xF8);
/* No prefixes allowed */
if (State->PrefixFlags)
{
Fast486Exception(State, FAST486_EXCEPTION_UD);
return;
}
NO_LOCK_PREFIX();
/* Clear CF and return success */
State->Flags.Cf = FALSE;
@ -651,12 +646,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeSetCarry)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xF9);
/* No prefixes allowed */
if (State->PrefixFlags)
{
Fast486Exception(State, FAST486_EXCEPTION_UD);
return;
}
NO_LOCK_PREFIX();
/* Set CF and return success*/
State->Flags.Cf = TRUE;
@ -667,12 +657,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeComplCarry)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xF5);
/* No prefixes allowed */
if (State->PrefixFlags)
{
Fast486Exception(State, FAST486_EXCEPTION_UD);
return;
}
NO_LOCK_PREFIX();
/* Toggle CF and return success */
State->Flags.Cf = !State->Flags.Cf;
@ -684,12 +669,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeClearInt)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xFA);
/* No prefixes allowed */
if (State->PrefixFlags)
{
Fast486Exception(State, FAST486_EXCEPTION_UD);
return;
}
NO_LOCK_PREFIX();
/* Check for protected mode */
if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE)
@ -719,12 +699,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeSetInt)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xFB);
/* No prefixes allowed */
if (State->PrefixFlags)
{
Fast486Exception(State, FAST486_EXCEPTION_UD);
return;
}
NO_LOCK_PREFIX();
/* Check for protected mode */
if (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_PE)
@ -754,12 +729,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeClearDir)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xFC);
/* No prefixes allowed */
if (State->PrefixFlags)
{
Fast486Exception(State, FAST486_EXCEPTION_UD);
return;
}
NO_LOCK_PREFIX();
/* Clear DF */
State->Flags.Df = FALSE;
@ -770,12 +740,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeSetDir)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xFD);
/* No prefixes allowed */
if (State->PrefixFlags)
{
Fast486Exception(State, FAST486_EXCEPTION_UD);
return;
}
NO_LOCK_PREFIX();
/* Set DF */
State->Flags.Df = TRUE;
@ -786,12 +751,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeHalt)
/* Make sure this is the right instruction */
ASSERT(Opcode == 0xF4);
/* No prefixes allowed */
if (State->PrefixFlags)
{
Fast486Exception(State, FAST486_EXCEPTION_UD);
return;
}
NO_LOCK_PREFIX();
/* Privileged instructions can only be executed under CPL = 0 */
if (Fast486GetCurrentPrivLevel(State) != 0)