void emitCall(Vout& v, CallSpec target, RegSet args) {
switch (target.kind()) {
case CallSpec::Kind::Direct:
v << call{static_cast<TCA>(target.address()), args};
return;
case CallSpec::Kind::Smashable:
v << calls{static_cast<TCA>(target.address()), args};
return;
case CallSpec::Kind::ArrayVirt: {
auto const addr = reinterpret_cast<intptr_t>(target.arrayTable());
auto const arrkind = v.makeReg();
v << loadzbl{rarg(0)[HeaderKindOffset], arrkind};
if (deltaFits(addr, sz::dword)) {
v << callm{baseless(arrkind * 8 + addr), args};
} else {
auto const base = v.makeReg();
v << ldimmq{addr, base};
v << callm{base[arrkind * 8], args};
}
static_assert(sizeof(HeaderKind) == 1, "");
} return;
case CallSpec::Kind::Destructor: {
// this movzbq is only needed because callers aren't required to
// zero-extend the type.
auto zextType = v.makeReg();
v << movzbq{target.reg(), zextType};
auto dtor_ptr = lookupDestructor(v, zextType);
v << callm{dtor_ptr, args};
} return;
case CallSpec::Kind::Stub:
v << callstub{target.stubAddr(), args};
return;
}
not_reached();
}
void emitCall(Vout& v, CallSpec target, RegSet args) {
using K = CallSpec::Kind;
switch (target.kind()) {
case K::Direct:
v << call{static_cast<TCA>(target.address()), args};
return;
case K::Smashable:
v << calls{static_cast<TCA>(target.address()), args};
return;
case K::ArrayVirt: {
auto const addr = reinterpret_cast<intptr_t>(target.arrayTable());
auto const arrkind = v.makeReg();
v << loadzbl{rarg(0)[HeaderKindOffset], arrkind};
if (deltaFits(addr, sz::dword)) {
v << callm{baseless(arrkind * 8 + addr), args};
} else {
auto const base = v.makeReg();
v << ldimmq{addr, base};
v << callm{base[arrkind * 8], args};
}
static_assert(sizeof(HeaderKind) == 1, "");
} return;
case K::Destructor: {
auto dtor = lookupDestructor(v, target.reg());
v << callm{dtor, args};
} return;
case K::Stub:
v << callstub{target.stubAddr(), args};
return;
}
not_reached();
}