func (mach X86) OpInit(code gen.OpCoder, startAddr int32) (retAddr int32) { if code.Len() == 0 || code.Len() > functionAlignment { panic("inconsistency") } code.Align(functionAlignment, paddingByte) Add.opImm(code, types.I64, regStackLimit, gen.StackReserve) var notResume links.L Test.opFromReg(code, types.I64, regResult, regResult) Je.rel8.opStub(code) notResume.AddSite(code.Len()) Ret.op(code) // simulate return from snapshot function call notResume.Addr = code.Len() mach.updateBranches8(code, ¬Resume) CallRel.op(code, startAddr) return code.Len() }