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| author |   Michal Simek <monstr@monstr.eu> | 2010-12-29 14:34:46 +0100 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2011-01-03 10:08:29 +0100 |
| commit | e3288f310111f7d18c323d95ae998765dee8c825 (patch) | |
| tree | 764dce005788f16e0a894257edf7237b4e4c81bd /arch/microblaze | |
| parent | microblaze: Add PVR for Microblaze v8.00.b (diff) | |
| download | linux-dev-e3288f310111f7d18c323d95ae998765dee8c825.tar.xz linux-dev-e3288f310111f7d18c323d95ae998765dee8c825.zip | |
microblaze: Fix unaligned exception for little endian platform
Half word unaligned accesses need to be fixed.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch/microblaze')
| -rw-r--r-- | arch/microblaze/kernel/hw_exception_handler.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S index 781195438ee6..25f6e07d8de8 100644 --- a/arch/microblaze/kernel/hw_exception_handler.S +++ b/arch/microblaze/kernel/hw_exception_handler.S @@ -945,11 +945,20 @@ store3: sbi r3, r4, 2; store4: sbi r3, r4, 3; /* Delay slot */ ex_shw_vm: /* Store the lower half-word, byte-by-byte into destination address */ +#ifdef __MICROBLAZEEL__ + lbui r3, r5, 0; +store5: sbi r3, r4, 0; + lbui r3, r5, 1; + brid ret_from_exc; +store6: sbi r3, r4, 1; /* Delay slot */ +#else lbui r3, r5, 2; store5: sbi r3, r4, 0; lbui r3, r5, 3; brid ret_from_exc; store6: sbi r3, r4, 1; /* Delay slot */ +#endif + ex_sw_end_vm: /* Exception handling of store word, ends. */ /* We have to prevent cases that get/put_user macros get unaligned pointer |