#11261: Implement DWARF debugging on powerpc64 -------------------------------------+------------------------------------- Reporter: trommler | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 7.11 (CodeGen) | Resolution: | Keywords: Operating System: Linux | Architecture: powerpc64 Type of failure: Incorrect result | Test Case: debug, T10667 at runtime | Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"feb19eae3d7b70a2c0038624dcfe2c417213d5c5/ghc" feb19eae/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="feb19eae3d7b70a2c0038624dcfe2c417213d5c5" testsuite: mark tests broken on powerpc64 The following tests fail on powerpc64 and have a ticket. Mark those tests as expect_broken. Here are the details: The PowerPC native code generator does not support DWARF debug information. This is tracked in ticket #11261. Mark the respective tests broken on powerpc64. testsuite: mark print022 broken on powerpc64 Ticket #11262 tracks difference in stdout for print022. testsuite: mark recomp015 broken on powerpc64 testsuite: mark recomp011 broken on powerpc64 This is tracked as ticket #11323 and #11260. testsuite: mark linker tests broken on powerpc64 Ticket #11259 tracks tests failing because there is no RTS linker on powerpc64. Test Plan: validate Reviewers: erikd, austin, bgamari Reviewed By: bgamari Subscribers: thomie Differential Revision: https://phabricator.haskell.org/D1928 GHC Trac Issues: #11259, #11260, #11261, #11262, #11323 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11261#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#11261: Implement DWARF debugging on powerpc64 -------------------------------------+------------------------------------- Reporter: trommler | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 7.11 (CodeGen) | Resolution: | Keywords: Operating System: Linux | Architecture: powerpc64 Type of failure: Incorrect result | Test Case: debug, T10667 at runtime | Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * milestone: 8.2.1 => 8.4.1 Comment: It seems unlikely that this will happen for 8.2. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11261#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#11261: Implement DWARF debugging on powerpc64 -------------------------------------+------------------------------------- Reporter: trommler | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: 8.4.1 Component: Compiler | Version: 7.11 (CodeGen) | Resolution: | Keywords: Operating System: Linux | Architecture: powerpc64 Type of failure: Incorrect result | Test Case: debug, at runtime | T10667, | simplCore/should_compile/T13658 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ben Gamari ): In [changeset:"8b1020ed21ec8af1accdd900f0d48c3c92b6ed83/ghc" 8b1020ed/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="8b1020ed21ec8af1accdd900f0d48c3c92b6ed83" RTS: Disable warnings in ffi.h The update of GHC's in-tree libffi causes warnings about undefined macros and hence validate fails. Also mark broken tests that have a ticket. Fixes #14353 Test Plan: ./validate (on AIX and powerpc if possible) Reviewers: bgamari, hvr, erikd, simonmar Reviewed By: bgamari Subscribers: snowleopard, rwbarton, thomie GHC Trac Issues: #14353, #11259, #14455, #11261 Differential Revision: https://phabricator.haskell.org/D4181 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11261#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#11261: Implement DWARF debugging on powerpc64 -------------------------------------+------------------------------------- Reporter: trommler | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 7.11 (CodeGen) | Resolution: | Keywords: Operating System: Linux | Architecture: powerpc64 Type of failure: Incorrect result | Test Case: debug, at runtime | T10667, | simplCore/should_compile/T13658 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by admock): What's required to add this? I'd like to get this working to make the other powerpc64 issues easier to fix. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11261#comment:9 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#11261: Implement DWARF debugging on powerpc64 -------------------------------------+------------------------------------- Reporter: trommler | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 7.11 (CodeGen) | Resolution: | Keywords: Operating System: Linux | Architecture: powerpc64 Type of failure: Incorrect result | Test Case: debug, at runtime | T10667, | simplCore/should_compile/T13658 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by trommler): Replying to [comment:9 admock]:

What's required to add this? I have started work on this two years ago in my github repository [https://github.com/trommler/ghc/tree/T11261].

The issue where I got stuck was that I could not find a way to tell a function label apart from other label types. In the ppc64 ABI a function label is the label of a function descriptor but for debug information I need the label of the function code. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11261#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#11261: Implement DWARF debugging on powerpc64 -------------------------------------+------------------------------------- Reporter: trommler | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 7.11 (CodeGen) | Resolution: | Keywords: Operating System: Linux | Architecture: powerpc64 Type of failure: Incorrect result | Test Case: debug, at runtime | T10667, | simplCore/should_compile/T13658 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by admock): Replying to [comment:11 trommler]:

Replying to [comment:9 admock]:

...

What's required to add this? I have started work on this two years ago in my github repository [https://github.com/trommler/ghc/tree/T11261].

The issue where I got stuck was that I could not find a way to tell a function label apart from other label types. In the ppc64 ABI a function label is the label of a function descriptor but for debug information I need the label of the function code.

Thanks. I won't have any time to look at this for a couple of weeks, but I've wanted this a few times so I'll give it a shot. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11261#comment:13 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler