extern instruction *NeedIndex( instruction *ins ) {
/*******************************************************
Mark conflicts for any name used in instruction as as segment as
NEEDS_SEGMENT, or split out the segment if it is marked as
NEEDS_SEGMENT_SPLIT (move the segment operand to a temp and use the
temp as the segment override). Also, if any index conflicts are
marked as NEEDS_INDEX_SPLIT, split them out into a temp as well.
*/
name *temp;
name *index;
conflict_node *conf;
name *name;
if( ins->num_operands > NumOperands( ins ) ) {
name = ins->operands[ins->num_operands - 1];
conf = NameConflict( ins, name );
if( conf != NULL && _Isnt( conf, CST_NEEDS_SEGMENT_SPLIT ) ) {
_SetTrue( conf, CST_NEEDS_SEGMENT );
MarkSegment( ins, name );
} else if( name->n.class != N_REGISTER ) {
if( conf != NULL ) {
_SetFalse( conf, CST_NEEDS_SEGMENT );
_SetTrue( conf, CST_WAS_SEGMENT );
}
temp = AllocTemp( U2 );
ins->operands[ins->num_operands - 1] = temp;
PrefixIns( ins, MakeMove( name, temp, U2 ) );
MarkSegment( ins, temp );
_SetTrue( NameConflict( ins, temp ), CST_SEGMENT_SPLIT );
ins = ins->head.prev;
}
}
void Program::UpdateSegment (int& sStart, int newStart, int segType) {
if (sStart != newStart) {
if (sStart != -1) {
MarkSegment(segType, true);
}
sStart = newStart;
segStart[segType] = newStart;
}
}
