func (q *Process) Dawn(flags uint64, c chan bool) {
highest := q.highest
pml4 := q.PML4
q.highest = USERSTART
q.NewPML4()
q.Allocate(uint64(highest - USERSTART))
buf := make([]byte, PAGESIZE)
bufh := (*runtime.SliceHeader)(unsafe.Pointer(&buf))
for v := uintptr(USERSTART); v < highest; v += PAGESIZE {
runtime.SetLocalCR3(pml4)
runtime.Memmove(bufh.Data, v, PAGESIZE)
runtime.SetLocalCR3(q.PML4)
runtime.Memmove(v, bufh.Data, PAGESIZE)
}
q.ProcState.ax = 0
c <- false
q.Run()
}
func (p *Process) NewPML4() {
p.PML4 = p.KAllocate(1)
_pml := runtime.MapTmp(p.PML4)
runtime.Memclr(_pml, PAGESIZE)
pdp := p.KAllocate(1)
Write64(_pml, pdp|PAGEAVAIL|PAGEWRITE|PAGEUSER)
_pdp := runtime.MapTmp(pdp)
runtime.Memclr(_pdp, PAGESIZE)
Write64(_pdp, runtime.KernelPD|PAGEAVAIL|PAGEWRITE|PAGEUSER)
runtime.FreeTmp(_pdp)
runtime.FreeTmp(_pml)
runtime.SetLocalCR3(p.PML4)
}