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[FAST486]: speed up things a bit when we're reading prefixes, by really going to the next instruction (no jump to the end of the do{}while() loop, then restart).

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svn path=/trunk/; revision=64698
This commit is contained in:
Hermès Bélusca-Maïto 2014-10-12 14:08:14 +00:00
parent 62a9101a31
commit eebf53a4a1
1 changed files with 3 additions and 3 deletions
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6
reactos/lib/fast486/fast486.c
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@ -54,6 +54,7 @@ Fast486ExecutionControl(PFAST486_STATE State, FAST486_EXEC_CMD Command)
/* Main execution loop */
do
{
NextInst:
/* Check if this is a new instruction */
if (State->PrefixFlags == 0) State->SavedInstPtr = State->InstPtr;
@ -72,7 +73,7 @@ Fast486ExecutionControl(PFAST486_STATE State, FAST486_EXEC_CMD Command)
CurrentHandler(State, Opcode);
/* If this is a prefix, go to the next instruction immediately */
if (CurrentHandler == Fast486OpcodePrefix) continue;
if (CurrentHandler == Fast486OpcodePrefix) goto NextInst;
/* A non-prefix opcode has been executed, reset the prefix flags */
State->PrefixFlags = 0;
@ -104,8 +105,7 @@ Fast486ExecutionControl(PFAST486_STATE State, FAST486_EXEC_CMD Command)
State->IntStatus = FAST486_INT_EXECUTE;
}
}
while ((CurrentHandler == Fast486OpcodePrefix) ||
(Command == FAST486_CONTINUE) ||
while ((Command == FAST486_CONTINUE) ||
(Command == FAST486_STEP_OVER && ProcedureCallCount > 0) ||
(Command == FAST486_STEP_OUT && ProcedureCallCount >= 0));
}