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Than McIntosh d5854bf8e6 [dev.link] cmd/link: support updates to contents of obj-based Syms
Add in the hooks to SymbolBuilder and to the loader to allow
the linker to make modifications to a non-external symbol (e.g.
a sym whose index is less than loader.extStart).

The basic idea is to manufacture a new external symbol with the same
name and version, then import the old symbol's content (type, data,
relocations, etc) into the payload struct for the new symbol, and
finally redirect the name lookup tables to target the new sym for the
specified name/version.

This change is needed in order to convert over the host object loaders
to avoid use of sym.Symbol.

Change-Id: I79cd42b23794e830bbdbcbcd2c500c35c351f01f
Reviewed-on: https://go-review.googlesource.com/c/go/+/211897
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-01-06 19:15:40 +00:00
.github
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: support updates to contents of obj-based Syms 2020-01-06 19:15:40 +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
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CONTRIBUTORS C: update email address for utkarsh-extc 2019-10-03 12:39:06 +00:00
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SECURITY.md SECURITY.md: update go versions 2019-09-26 15:34:57 +00:00

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