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segment.go
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// Inferno utils/8l/asm.c
// https://bitbucket.org/inferno-os/inferno-os/src/master/utils/8l/asm.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 sym
// Terrible but standard terminology.
// A segment describes a block of file to load into memory.
// A section further describes the pieces of that block for
// use in debuggers and such.
type Segment struct {
Rwx uint8 // permission as usual unix bits (5 = r-x etc)
Vaddr uint64 // virtual address
Length uint64 // length in memory
Fileoff uint64 // file offset
Filelen uint64 // length on disk
Sections []*Section
}
type Section struct {
Rwx uint8
Extnum int16
Align int32
Name string
Vaddr uint64
Length uint64
Seg *Segment
Elfsect interface{} // an *ld.ElfShdr
Reloff uint64
Rellen uint64
// Relcount is the number of *host* relocations applied to this section
// (when external linking).
// Incremented atomically on multiple goroutines.
// Note: this may differ from number of Go relocations, as one Go relocation
// may turn into multiple host relocations.
Relcount uint32
Sym LoaderSym // symbol for the section, if any
Index uint16 // each section has a unique index, used internally
Compressed bool
}