address AbstractInterpreterGenerator::generate_result_handler_for(BasicType type) {
//
// Registers alive
// R3_RET
// LR
//
// Registers updated
// R3_RET
//
Label done;
address entry = __ pc();
switch (type) {
case T_BOOLEAN:
// convert !=0 to 1
__ neg(R0, R3_RET);
__ orr(R0, R3_RET, R0);
__ srwi(R3_RET, R0, 31);
break;
case T_BYTE:
// sign extend 8 bits
__ extsb(R3_RET, R3_RET);
break;
case T_CHAR:
// zero extend 16 bits
__ clrldi(R3_RET, R3_RET, 48);
break;
case T_SHORT:
// sign extend 16 bits
__ extsh(R3_RET, R3_RET);
break;
case T_INT:
// sign extend 32 bits
__ extsw(R3_RET, R3_RET);
break;
case T_LONG:
break;
case T_OBJECT:
// unbox result if not null
__ cmpdi(CCR0, R3_RET, 0);
__ beq(CCR0, done);
__ ld(R3_RET, 0, R3_RET);
__ verify_oop(R3_RET);
break;
case T_FLOAT:
break;
case T_DOUBLE:
break;
case T_VOID:
break;
default: ShouldNotReachHere();
}
__ BIND(done);
__ blr();
return entry;
}
address CppInterpreterGenerator::generate_result_handler_for(BasicType type)
{
address start = __ pc();
switch (type) {
case T_VOID:
break;
case T_BOOLEAN:
{
Label zero;
__ compare (r3, 0);
__ beq (zero);
__ load (r3, 1);
__ bind (zero);
}
break;
case T_CHAR:
__ andi_ (r3, r3, 0xffff);
break;
case T_BYTE:
__ extsb (r3, r3);
break;
case T_SHORT:
__ extsh (r3, r3);
break;
case T_INT:
#ifdef PPC64
__ extsw (r3, r3);
#endif
break;
case T_LONG:
case T_FLOAT:
case T_DOUBLE:
break;
case T_OBJECT:
__ load (r3, STATE(_oop_temp));
__ verify_oop (r3);
break;
default:
ShouldNotReachHere();
}
__ blr ();
return start;
}