[GHC] #12147: GHC's Linker Should Support Relocation Type 42

[GHC]

#12147: GHC's Linker Should Support Relocation Type 42
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        Reporter:  gershomb          |                Owner:  Phyx-
            Type:  bug               |               Status:  patch
        Priority:  high              |            Milestone:  8.0.2
       Component:  Runtime System    |              Version:  8.0.1
  (Linker)                           |
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2303
       Wiki Page:                    |
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Comment (by Tamar Christina <tamar@…>):

 In [changeset:"0d963caf40da4391028a3beb95b5082c87985e7d/ghc"
 0d963caf/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="0d963caf40da4391028a3beb95b5082c87985e7d"
 Add relocation type R_X86_64_REX_GOTPCRELX

 Summary:
 Adding support for the `R_X86_64_REX_GOTPCRELX` relocation type.
 This relocation is treated by the linker the same as the
 `R_X86_64_GOTPCRELX` type
 `G + GOT + A - P` to generate relative offsets to the GOT.
 The `REX` prefix has no influence in this stage.

 This is based on https://github.com/hjl-
 tools/x86-psABI/wiki/x86-64-psABI-r252.pdf

 Test Plan: ./validate

 Reviewers: erikd, austin, bgamari, simonmar

 Reviewed By: erikd

 Subscribers: thomie, #ghc_windows_task_force

 Differential Revision: https://phabricator.haskell.org/D2303

 GHC Trac Issues: #12147
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12147#comment:8>
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