diff options
| author | Ben Gamari <bgamari.foss@gmail.com> | 2016-11-02 15:00:44 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-11-02 15:42:00 -0400 |
| commit | abfa3196a19cd8912fdbae121641474b3261d7cf (patch) | |
| tree | 842245ba13025947f06fdb5665d0a2894d2c38de /rts/LinkerInternals.h | |
| parent | f4fb3bc15f49997962e223c4f8c489566d7f5d91 (diff) | |
| download | haskell-abfa3196a19cd8912fdbae121641474b3261d7cf.tar.gz | |
linker: Shuffle configuration into LinkerInternals.h
Test Plan: Validate
Reviewers: erikd, austin, simonmar
Reviewed By: simonmar
Subscribers: thomie
Differential Revision: https://phabricator.haskell.org/D2644
Diffstat (limited to 'rts/LinkerInternals.h')
| -rw-r--r-- | rts/LinkerInternals.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/rts/LinkerInternals.h b/rts/LinkerInternals.h index 729cf1d792..460beae1c9 100644 --- a/rts/LinkerInternals.h +++ b/rts/LinkerInternals.h @@ -301,4 +301,28 @@ getting, here. */ #endif /* OBJFORMAT_PEi386 */ + +/************************************************* + * Various bits of configuration + *************************************************/ + +/* PowerPC and ARM have relative branch instructions with only 24 bit + * displacements and therefore need jump islands contiguous with each object + * code module. + */ +#if defined(powerpc_HOST_ARCH) +#define SHORT_REL_BRANCH 1 +#endif +#if defined(arm_HOST_ARCH) +#define SHORT_REL_BRANCH 1 +#endif + +#if (RTS_LINKER_USE_MMAP && defined(SHORT_REL_BRANCH) && defined(linux_HOST_OS)) +#define USE_CONTIGUOUS_MMAP 1 +#else +#define USE_CONTIGUOUS_MMAP 0 +#endif + + + #endif /* LINKERINTERNALS_H */ |