#10402: powerpc: unhandled ELF relocation(RelA) type 252
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Reporter: cjwatson | Owner: simonmar
Type: bug | Status: patch
Priority: normal | Milestone: 7.10.2
Component: Runtime System | Version: 7.8.4
Resolution: | Keywords:
Operating System: Linux | Architecture: powerpc
Type of failure: Runtime crash | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Revisions: Phab:D996
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Comment (by Austin Seipp ):
In [changeset:"c0847967caf51ea4ca88d0ffc25fe1bd99dcabed/ghc"]:
{{{
#!CommitTicketReference repository="ghc"
revision="c0847967caf51ea4ca88d0ffc25fe1bd99dcabed"
powerpc: add basic support for PLT relocations (#10402)
Commit a93ab43ab5f40cadbedea2f6342b93c245e91434
enabled support for proper PIC relocations from
assembler.
Commit adds support for relocations of type:
R_PPC_REL16_HI
R_PPC_REL16_HA
R_PPC_REL16_LO
R_PPC_PLTREL24
They are used only when GHC is built in
DYNAMIC_GHC_PROGRAMS = NO
mode.
Verified by running the following test:
// cat a.c
#include
void ffi_a_hello (int i) {
fprintf (stderr, "WEEEEEEEE: i=%d\n", i);
}
-- cat A.hs
{-# LANGUAGE ForeignFunctionInterface #-}
module A where
import Foreign.C
foreign import ccall "ffi_a_hello" a :: CInt -> IO ()
# ghc -fPIC -c a.c -fforce-recomp
# ghc -fPIC -c A.hs -fforce-recomp
# ghc --interactive ./a.o A
...
*A> a 42
WEEEEEEEE: i=42
See gory details in Trac #10402.
Signed-off-by: Colin Watson
Signed-off-by: Sergei Trofimovich
Reviewed By: bgamari, austin
Differential Revision: https://phabricator.haskell.org/D996
GHC Trac Issues: #10402
}}}
--
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10402#comment:19
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