Re: [GHC] #11395: The via-C code generation backend is incompatible with gcc 5.3.1 on m68k (ELF)

11 Jan 2016

      #11395: The via-C code generation backend is incompatible with gcc 5.3.1 on m68k
(ELF)
--------------------------------------------+------------------------------
        Reporter:  mkarcher                 |                Owner:
            Type:  bug                      |               Status:  new
        Priority:  normal                   |            Milestone:
       Component:  Compiler                 |              Version:  7.10.2
      Resolution:                           |             Keywords:
Operating System:  Linux                    |         Architecture:  m68k
 Type of failure:  GHC doesn't work at all  |            Test Case:
      Blocked By:                           |             Blocking:
 Related Tickets:                           |  Differential Rev(s):
       Wiki Page:                           |
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Comment (by mkarcher):

 rwbarton: The possibility to use a local extern function declaration to
 avoid the function pointer hack occurred to me, too. I don't know enough
 about ghc internals to determine whether it is viable. You might try to go
 without ghcFunPtr, if possible. Like generating

 {{{
 {
    extern W_ raiseExceptionHelper(void *, void *, void *);
    raiseExceptionHelper((void*)((W_)BaseReg, (void*)(W_)CurrentTSO,
 (void*)_c2z);;}
 }}}

 instead of

 {{{
 {
     W_ (*ghcFunPtr)(void *, void *, void *);
     ghcFunPtr = ((W_ (*)(void *, void *, void *))raiseExceptionHelper);
     _c2y = ghcFunPtr((void *)(W_)BaseReg, (void *)(W_)CurrentTSO, (void
 *)_c2z);;}
 }}}

--
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11395#comment:10
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