def in.ap.external

bend-osdev-acpi@0.1.1.0 · aml_interp.bend:1534

import Base
import bend-osdev-word64@0.1.1.0/word64.bend as W
import bend-osdev-acpi@0.1.1.0/error.bend as E
import bend-osdev-acpi@0.1.1.0/aml_value.bend as V
import bend-osdev-acpi@0.1.1.0/aml_ns.bend as S
import bend-osdev-acpi@0.1.1.0/aml_host.bend as Hs

1534# External declares an object defined elsewhere; it defines nothing if the
1535# object exists
1536def in.ap.external(~H: Data, ~io: H -> Hs.AmlHostOp -> Result<&2, &2, E.AcpiError, Hs.AmlHostAns<H>>, args: List<&2, V.AmlValue>, c: AmlCur, fs: List<&2, AmlFrame>, +w: AmlWorld<H>) -> AmlMachine<H>:
1537  match args:
1538    case Con{n, Con{V.AmlInt{k}, Con{a, Nil{}}}}:
1539      +p = in.path(n)
1540      in.ext.pick(H, S.AmlNs.has(AmlWorld.ns(H, w), p), p, W.W64.lo(k), c, fs, w)
1541    case _:
1542      in.bad(H, 21, c, fs, w)