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[dev.link] cmd/link: add hooks for sorting loader.Reloc by offset

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Add support for supporting loader.Reloc by offset, needed by host
object loaders.

Change-Id: I5ac0702ee74ad71531f443e6215558d8151e3a4c
Reviewed-on: https://go-review.googlesource.com/c/go/+/211306
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
This commit is contained in:
Than McIntosh 2019-12-13 13:34:43 -05:00
parent 186e783730
commit a52cea446d
1 changed files with 8 additions and 0 deletions
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8
src/cmd/link/internal/loader/loader.go
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@ -1339,6 +1339,14 @@ func (l *Loader) relocs(r *oReader, li int) Relocs {
} }
} }
// RelocByOff implements sort.Interface for sorting relocations by offset.
type RelocByOff []Reloc
func (x RelocByOff) Len() int { return len(x) }
func (x RelocByOff) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
func (x RelocByOff) Less(i, j int) bool { return x[i].Off < x[j].Off }
// Preload a package: add autolibs, add symbols to the symbol table. // Preload a package: add autolibs, add symbols to the symbol table.
// Does not read symbol data yet. // Does not read symbol data yet.
func (l *Loader) Preload(arch *sys.Arch, syms *sym.Symbols, f *bio.Reader, lib *sym.Library, unit *sym.CompilationUnit, length int64, pn string, flags int) { func (l *Loader) Preload(arch *sys.Arch, syms *sym.Symbols, f *bio.Reader, lib *sym.Library, unit *sym.CompilationUnit, length int64, pn string, flags int) {