// Derived from Inferno utils/6l/obj.c and utils/6l/span.c // https://bitbucket.org/inferno-os/inferno-os/src/master/utils/6l/obj.c // https://bitbucket.org/inferno-os/inferno-os/src/master/utils/6l/span.c // // Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. // Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) // Portions Copyright © 1997-1999 Vita Nuova Limited // Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) // Portions Copyright © 2004,2006 Bruce Ellis // Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) // Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others // Portions Copyright © 2009 The Go Authors. All rights reserved. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. package obj /* * add library to library list. * srcref: src file referring to package * objref: object file referring to package * file: object file, e.g., /home/rsc/go/pkg/container/vector.a * pkg: package import path, e.g. container/vector */ const ( LOG = 5 ) func mkfwd(sym *LSym) { var dwn [LOG]int32 var cnt [LOG]int32 var lst [LOG]*Prog for i := 0; i < LOG; i++ { if i == 0 { cnt[i] = 1 } else { cnt[i] = LOG * cnt[i-1] } dwn[i] = 1 lst[i] = nil } i := 0 for p := sym.Func().Text; p != nil && p.Link != nil; p = p.Link { i-- if i < 0 { i = LOG - 1 } p.Forwd = nil dwn[i]-- if dwn[i] <= 0 { dwn[i] = cnt[i] if lst[i] != nil { lst[i].Forwd = p } lst[i] = p } } } func Appendp(q *Prog, newprog ProgAlloc) *Prog { p := newprog() p.Link = q.Link q.Link = p p.Pos = q.Pos return p }