selftests: arm64: add test for unaligned/inexact watchpoint handling

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ARM64 hardware expects 64bit aligned address for watchpoint invocation.
However, it provides byte selection method to select any number of
consecutive byte set within the range of 1-8.

This patch adds support to test all such byte selection option for
different memory write sizes.

Patch also adds a test for handling the case when the cpu does not
report an address which exactly matches one of the regions we have
been watching (which is a situation permitted by the spec if an
instruction accesses both watched and unwatched regions). The test
was failing on a MSM8996pro before this patch series and is
passing now.

Signed-off-by: Pavel Labath <labath@google.com>
Signed-off-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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This commit is contained in:

Pratyush Anand 2016-11-14 19:32:46 +05:30 • committed by Will Deacon

parent 0ddb8e0b78

commit f43365ee17

2 changed files with 240 additions and 1 deletions

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5

tools/testing/selftests/breakpoints/Makefile

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236

tools/testing/selftests/breakpoints/breakpoint_test_arm64.c

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