| // 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 | |
| } | |