diff options
Diffstat (limited to 'vendor/github.com/google/gops/internal/obj/ld.go')
| -rw-r--r-- | vendor/github.com/google/gops/internal/obj/ld.go | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/vendor/github.com/google/gops/internal/obj/ld.go b/vendor/github.com/google/gops/internal/obj/ld.go new file mode 100644 index 00000000..54fde2f2 --- /dev/null +++ b/vendor/github.com/google/gops/internal/obj/ld.go @@ -0,0 +1,92 @@ +// Derived from Inferno utils/6l/obj.c and utils/6l/span.c +// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/obj.c +// https://bitbucket.org/inferno-os/inferno-os/src/default/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.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 Copyp(ctxt *Link, q *Prog) *Prog { + p := ctxt.NewProg() + *p = *q + return p +} + +func Appendp(ctxt *Link, q *Prog) *Prog { + p := ctxt.NewProg() + p.Link = q.Link + q.Link = p + p.Lineno = q.Lineno + p.Mode = q.Mode + return p +} |