textStart := ldr.SymValue(ldr.Lookup("runtime.text", 0))
	pcOff := func(s loader.Sym) uint32 {
		off := ldr.SymValue(s) - textStart
		if off < 0 {
			panic(fmt.Sprintf("expected func %s(%x) to be placed at or after textStart (%x)", ldr.SymName(s), ldr.SymValue(s), textStart))
		}
		return uint32(off)
	}
	for i, s := range funcs {
		sb.SetUint32(ctxt.Arch, int64(i*2*4), pcOff(s))

		morebuf := thisg.m.morebuf
		gp.syscallsp = morebuf.sp
		gp.syscallpc = morebuf.pc
		pcname, pcoff := "(unknown)", uintptr(0)
		f := findfunc(gp.sched.pc)
		if f.valid() {
			pcname = funcname(f)
			pcoff = gp.sched.pc - f.entry()
		}
		print("runtime: newstack at ", pcname, "+", hex(pcoff),
			" sp=", hex(gp.sched.sp), " stack=[", hex(gp.stack.lo), ", ", hex(gp.stack.hi), "]\n",

	datap := findmoduledatap(pc)
	if datap == nil {
		return funcInfo{}
	}
	const nsub = uintptr(len(findfuncbucket{}.subbuckets))

	pcOff, ok := datap.textOff(pc)
	if !ok {
		return funcInfo{}
	}

	x := uintptr(pcOff) + datap.text - datap.minpc // TODO: are datap.text and datap.minpc always equal?
	b := x / abi.FuncTabBucketSize
	i := x % abi.FuncTabBucketSize / (abi.FuncTabBucketSize / nsub)