void CgFrontGotoNear( // EMIT GOTO IN NEAR SPACE (CS,GOTO)
int opcode, // - opcode to determine type of label ref.
unsigned condition, // - condition for goto
CGLABEL label ) // - label number
{
label_reference( label, opcode );
CgFrontCodeUint( IC_GOTO_NEAR, condition );
dump_label( printf( "GotoNear -- %d\n", label ) );
}
void CgFrontSwitchCase( // CASE STATEMENT IN SWITCH STATEMENT
SCOPE scope_sw, // - scope for switch jump
boolean deadcode, // - dead-code state
TOKEN_LOCN *posn, // - source-file position
uint_32 value ) // - switch value
{
CGFILE_GEN *gen; // - generation data
gen = getGenData();
emitSourcePosn( gen, posn );
CgFrontCodeUint( IC_SWITCH_CASE, value );
LabelSwitchLabel( scope_sw, deadcode );
cgfront_debug( "case" );
}
unsigned StaticInitFuncBeg( // START INITIALIZATION OF STATIC IN FUNCTION
void )
{
CGLABEL init_label; // - label #
INIT_VAR *init_var;
CgFrontStatInit();
init_var = FunctionBodyGetInit( NULL );
if( init_var->var == NULL ) {
init_var->var = staticInitFuncVar();
} else {
init_var->mask <<= 1;
if( init_var->mask >= 0x100 ) {
++init_var->var->sym_type->u.a.array_size;
init_var->mask = 1;
}
}
if( CompFlags.bm_switch_used ) {
SYMBOL rtf;
rtf = RunTimeCallSymbol( RTF_STATIC_INIT );
CgFrontSymbol( rtf );
CgSetType( GetBasicType( TYP_SINT ) );
CgFrontCodePtr( IC_CALL_SETUP, rtf );
CgSetType( GetBasicType( TYP_SINT ) );
CgFrontCodeUint( IC_LEAF_CONST_INT, init_var->mask );
CgFrontCode( IC_CALL_PARM );
moduleInitVar( init_var->var, false );
CgFrontCode( IC_CALL_PARM );
CgFrontCode( IC_CALL_EXEC );
} else {
moduleInitVar( init_var->var, true );
CgFrontCodeUint( IC_OPR_UNARY, CO_FETCH );
CgFrontCodeUint( IC_LEAF_CONST_INT, init_var->mask );
CgFrontCodeUint( IC_OPR_BINARY, CO_AND );
}
CgFrontCodeUint( IC_LEAF_CONST_INT, 0 );
CgFrontCodeUint( IC_OPR_BINARY, CO_NE );
init_label = CgFrontLabelCs();
CgFrontGotoNear( IC_LABEL_CS, O_IF_TRUE, init_label );
if( !CompFlags.bm_switch_used ) {
moduleInitVar( init_var->var, true );
CgFrontCodeUint( IC_LEAF_CONST_INT, init_var->mask );
CgFrontCodeUint( IC_OPR_BINARY, CO_OR_EQUAL );
CgFrontCode( IC_EXPR_DONE );
}
return( init_label );
}
static void moduleInitVar( // GENERATE REFERENCE TO MODULE-INIT VAR.
SYMBOL var, // - variable
bool base_type ) // - base_type or pointer to it
{
unsigned offset; // - offset to be tested
TYPE type; // - type for flags variable
type = var->sym_type;
offset = type->u.a.array_size - 1;
if( offset != 0 ) {
CgSetType( GetBasicType( TYP_UINT ) );
CgFrontCodeUint( IC_LEAF_CONST_INT, offset );
CgFrontSymbol( var );
CgSetType( MakePointerTo( type->of ) );
CgFrontCodeUint( IC_OPR_BINARY, CO_PLUS );
} else {
CgFrontSymbol( var );
}
if( base_type ) {
CgSetType( type->of );
} else {
CgSetType( MakePointerTo( type->of ) );
}
}
CGFILE_INS CgFrontFuncOpen( // OPEN A FUNCTION (AND ITS FILE)
SYMBOL func, // - symbol for function
TOKEN_LOCN *posn ) // - source position
{
CGFILE_GEN *gen; // - generation data
DT_METHOD dtm; // - destruction method for function
CGFILE_INS reg; // - position to zap for function registration
codeCGFILE = CgioCreateFile( func );
if( posn != NULL ) {
codeCGFILE->defined = *posn;
}
gen = getGenData();
if( posn != NULL ) {
emitSourcePosn( gen, posn );
}
CgFrontCodePtr( IC_FUNCTION_OPEN, func );
CgFrontCodePtr( IC_FUNCTION_ARGS, GetCurrScope() );
dtm = CompInfo.dt_method_speced;
if( ! SymIsDtor( func ) ) {
switch( dtm ) {
case DTM_DIRECT_SMALL :
dtm = DTM_DIRECT;
break;
case DTM_TABLE_SMALL :
dtm = DTM_TABLE;
break;
}
}
CompInfo.dt_method = dtm;
CgFrontCodeUint( IC_FUNCTION_DTM, dtm );
CgFrontCode( IC_NO_OP ); // - may be zapped to IC_FUNCTION_STAB
reg = CgioLastWrite( codeCGFILE );
gen->emit_line_no.src_file = NULL;
if( posn != NULL ) {
emitSourcePosn( gen, posn );
}
return reg;
}
