golang segment 代码
文件路径：/src/cmd/link/internal/sym/segment.go
/ 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
}