This is a copy of debug/pe from go 1.14.2 (96745b980cfde139e8611772e2bc0c59a8e6cdf7) It exists here because debug/pe in go versions before 1.14 did not handle variable length optional headers (where the data directory is less than 16 entries) and therefore doesn't correctly decode kernel EFI images. Copying the code here avoids a hard dependency on go 1.14.

See https://github.com/golang/go/commit/3b92f36d15c868e856be71c0fadfc7ff97039b96