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cortex_m: remove old target breakpoints/watchpoints 

Sometimes the target may have breakpoint registers set from a previous
debug session, we can either sync them or as we have chosen here clear them.

Change-Id: I439a623ebbf010246a70e5596d04aa7d546da731
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/1363
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-by: Freddie Chopin <freddie.chopin@gmail.com>
This commit is contained in:
Spencer Oliver 2013-04-25 17:13:41 +01:00 committed by Freddie Chopin
parent 392fe70927
commit 67607fb64c
1 changed files with 6 additions and 0 deletions
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6
src/target/cortex_m.c
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@ -1796,6 +1796,9 @@ fail1:
for (j = 0; j < 3; j++, reg++)
cortex_m3_dwt_addreg(target, cache->reg_list + reg,
dwt_comp + 3 * i + j);
/* make sure we clear any watchpoints enabled on the target */
target_write_u32(target, comparator->dwt_comparator_address + 8, 0);
}
*register_get_last_cache_p(&target->reg_cache) = cache;
@ -1887,6 +1890,9 @@ int cortex_m3_examine(struct target *target)
cortex_m3->fp_comparator_list[i].type =
(i < cortex_m3->fp_num_code) ? FPCR_CODE : FPCR_LITERAL;
cortex_m3->fp_comparator_list[i].fpcr_address = FP_COMP0 + 4 * i;
/* make sure we clear any breakpoints enabled on the target */
target_write_u32(target, cortex_m3->fp_comparator_list[i].fpcr_address, 0);
}
LOG_DEBUG("FPB fpcr 0x%" PRIx32 ", numcode %i, numlit %i",
fpcr,