[dev.link] cmd/link: move setupdynexp before loadlibfull

Rewrite setupdynexp to work with loader.Sym, and move the call to it
before the body of loadlibfull. After loadlibfull is complete,
construct the old *sym.Symbol version of dynexp, since not all all
clients that access this list are converted to the loader APIs.

Change-Id: I347d24958e2f3e2332fbe33f2eb6ec25cc126bdb
Reviewed-on: https://go-review.googlesource.com/c/go/+/224382
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
4 files changed
tree: cf8d40c9c9d71926dbed53b9dbf4235ce992d2ba
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
  18. SECURITY.md
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