Vpoint emitCall(Vout& v, CppCall call, RegSet args) {
PhysReg arg0(argReg(0));
PhysReg rHostCall(rHostCallReg);
switch (call.kind()) {
case CppCall::Kind::Direct:
v << ldimm{reinterpret_cast<intptr_t>(call.address()), rHostCall};
break;
case CppCall::Kind::Virtual:
v << loadq{arg0[0], rHostCall};
v << loadq{rHostCall[call.vtableOffset()], rHostCall};
break;
case CppCall::Kind::IndirectReg:
case CppCall::Kind::IndirectVreg:
// call indirect currently not implemented. It'll be something like
// a.Br(x2a(call.getReg()))
not_implemented();
always_assert(0);
break;
case CppCall::Kind::ArrayVirt:
case CppCall::Kind::Destructor:
not_implemented();
always_assert(0);
break;
}
uint8_t argc = args.size();
args.add(rHostCall);
auto fixupAddr = v.makePoint();
v << hostcall{args, argc, fixupAddr};
return fixupAddr;
}
PhysRegSaverParity::PhysRegSaverParity(int parity, X64Assembler& as,
RegSet regs)
: m_as(as)
, m_regs(regs)
, m_adjust((parity & 0x1) == (regs.size() & 0x1) ? 8 : 0)
{
m_regs.forEach([&] (PhysReg pr) {
m_as. push (pr);
});
if (m_adjust) {
// Maintain stack evenness for SIMD compatibility.
m_as. subq (m_adjust, reg::rsp);
}
}
