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target-arm: Implement checking of fired watchpoint

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ARM stops before access to a location covered by watchpoint. Also, QEMU
watchpoint fire is not necessarily an architectural watchpoint match.
Unfortunately, that is hardly possible to ignore a fired watchpoint in
debug exception handler. So move watchpoint check from debug exception
handler to the dedicated watchpoint checking callback.

Signed-off-by: Sergey Fedorov <serge.fdrv@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1454256948-10485-3-git-send-email-serge.fdrv@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Sergey Fedorov 2016-02-11 11:17:32 +00:00 • committed by Peter Maydell
parent 568496c0c0
commit 3826121d92
3 changed files with 25 additions and 14 deletions
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target-arm/cpu.c
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@ -1483,6 +1483,7 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
cc->gdb_arch_name = arm_gdb_arch_name;
cc->gdb_stop_before_watchpoint = true;
cc->debug_excp_handler = arm_debug_excp_handler;
cc->debug_check_watchpoint = arm_debug_check_watchpoint;
cc->disas_set_info = arm_disas_set_info;