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cmd/link: implement external linking support for ppc64/linux #8912

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ianlancetaylor opened this issue Oct 9, 2014 · 3 comments
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@ianlancetaylor ianlancetaylor commented Oct 9, 2014 

We need to fix the 9l linker to provide external linking support, so that
-linkmode=external works on power64.

This code is currently on the dev.power64 branch and should come into tip after the 1.4
release is out.  This means writing elfreloc1, elfsetupplt, adddynsym, adddynrela, etc.,
in cmd/9l/asm.c and doing whatever else is necessary so that (cd misc/cgo/test
&& go test -linkmode=external) passes for both big- and little- endian power64.
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@ianlancetaylor ianlancetaylor commented Oct 9, 2014

Comment 2:

Doing "whatever else is necessary" to make misc/cgo/test pass will include writing
asm_power64be.s, asm_power64le.s, and gcc_linux_power64{be,ls}.s in the runtime/cgo
package.
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@gopherbot gopherbot commented Oct 15, 2014

Comment 5 by rappo@bountysource.com:

There is a $1,200 bounty on this issue from IBM:
https://www.bountysource.com/issues/5259148-cmd-9l-implement-external-linking-support-for-power64-linux
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@minux minux commented Nov 1, 2014

Comment 6:

Issue #9038 has been merged into this issue.
@minux minux mentioned this issue Dec 8, 2014
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@aclements aclements self-assigned this Dec 22, 2014
aclements added a commit that referenced this issue Jan 16, 2015
@aclements
misc/cgo: skip testso on ppc64
36f456c 
This test requires external linking, but we don't yet implement
external linking on ppc64 (tracked in issue #8912).  Disable the test
on ppc64 until external linking is implemented.

This makes all.bash pass on ppc64le.

Change-Id: I741498d4d9321607e7a65792a33faf8187bd18e4
Reviewed-on: https://go-review.googlesource.com/2908
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
@rsc rsc removed the arch-ppc64 label Apr 10, 2015
@rsc rsc added this to the Unplanned milestone Apr 10, 2015
@rsc rsc removed release-none labels Apr 10, 2015
@minux minux assigned minux and unassigned aclements May 4, 2015
@rsc rsc changed the title cmd/9l: implement external linking support for Power64 Linux cmd/link: implement external linking support for ppc64/linux Jun 8, 2015
This was referenced Jan 25, 2016
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@piascikj piascikj mentioned this issue Jan 6, 2018
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