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