diff options
| author | Andrew Baumann <Andrew.Baumann@microsoft.com> | 2015-12-17 13:37:13 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-12-17 13:37:13 +0000 |
| commit | 30901475b91ef1f46304404ab4bfe89097f61b96 (patch) | |
| tree | b84b67f2ea28863d0d1c13e2d5060d81efd733bb /target-arm/cpu.c | |
| parent | 580106df5ff1a86df317c8a8080e48e1694d785e (diff) | |
target-arm: raise exception on misaligned LDREX operands
Qemu does not generally perform alignment checks. However, the ARM ARM
requires implementation of alignment exceptions for a number of cases
including LDREX, and Windows-on-ARM relies on this.
This change adds plumbing to enable alignment checks on loads using
MO_ALIGN, a do_unaligned_access hook to raise the exception (data
abort), and uses the new aligned loads in LDREX (for all but
single-byte loads).
Signed-off-by: Andrew Baumann <Andrew.Baumann@microsoft.com>
Message-id: 1449167808-5656-1-git-send-email-Andrew.Baumann@microsoft.com
[PMM: set WnR bits in syndrome and FSR as appropriate]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm/cpu.c')
| -rw-r--r-- | target-arm/cpu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target-arm/cpu.c b/target-arm/cpu.c index 30739fc0df..35a1f12661 100644 --- a/target-arm/cpu.c +++ b/target-arm/cpu.c @@ -1417,6 +1417,7 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data) cc->handle_mmu_fault = arm_cpu_handle_mmu_fault; #else cc->do_interrupt = arm_cpu_do_interrupt; + cc->do_unaligned_access = arm_cpu_do_unaligned_access; cc->get_phys_page_debug = arm_cpu_get_phys_page_debug; cc->vmsd = &vmstate_arm_cpu; cc->virtio_is_big_endian = arm_cpu_is_big_endian; |