ARM: hw_breakpoint: reserve one breakpoint for watchpoint stepping

Browse source

The current hw_breakpoint code on ARM reserves 1 breakpoint for each
watchpoint that is available. Since debug architectures prior to 7.1
are restricted to 1 watchpoint anyway, only one breakpoint was ever
reserved.

This patch changes the reservation strategy so that a single breakpoint
is reserved, regardless of the number of watchpoints. This is in
preparation for multiple-watchpoint support on debug architectures
from 7.1 onwards.

Signed-off-by: Will Deacon <will.deacon@arm.com>

...

This commit is contained in:

Will Deacon 2011-08-02 13:01:17 +01:00

parent b5d5b8f986

commit c512de955f

1 changed files with 24 additions and 39 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

63

arch/arm/kernel/hw_breakpoint.c

View file