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Than McIntosh 07914eda40 [dev.link] cmd/link: initial support for linker-materialized external symbols
Create loader infrastructure for constructing the payloads of external
symbols from scratch, as opposed to passing in a sym.Symbol object
containing the payload.

The general idea is that clients can use the loader to create new
external Sym's using loader.AddExtSym, and then can add
relocations/data to the new sym with symbol builder interfaces (to be
provided in an subsequent patch), as opposed to having to use
sym.Symbol.

This change preserves compatibility with the old way of doing things
(passing in sym.Symbol) via a new loader.InstallSym method. If a
client invokes this method for a specific Sym, then the loader keeps
track of this fact and uses the sym.Symbol as the backing store instead.

Also included is a small unit test for the new interfaces -- not clear
whether this really needs to be kept around long term... it was mainly
useful during initial bringup.

Change-Id: If8ab15df7b64636e56b317155dfe6d7cdfe23b71
Reviewed-on: https://go-review.googlesource.com/c/go/+/207606
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>
2019-12-18 14:23:48 +00:00
.github .github: don't render author-facing text in ISSUE_TEMPLATE 2018-11-02 04:47:34 +00:00
api unicode: upgrade to Unicode 12 2019-11-05 14:34:56 +00:00
doc doc: add section on resolving packages to module reference doc 2019-11-27 16:41:28 +00:00
lib/time lib/time: update tz data to 2019c 2019-11-26 12:03:08 +00:00
misc misc/cgo/testshared: do not write to GOROOT 2019-11-25 17:05:01 +00:00
src [dev.link] cmd/link: initial support for linker-materialized external symbols 2019-12-18 14:23:48 +00:00
test cmd/compile: try harder to not use an empty src.XPos for a bogus line 2019-11-22 03:06:22 +00:00
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AUTHORS A+C: change email address for Akhil Indurti 2019-09-09 15:30:38 +00:00
CONTRIBUTING.md all: restore changes from faulty merge/revert 2018-02-12 20:13:59 +00:00
CONTRIBUTORS C: update email address for utkarsh-extc 2019-10-03 12:39:06 +00:00
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README.md README: linkify some paths 2018-06-06 18:07:01 +00:00
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