diff options
author | Andreas Fritiofson <andreas.fritiofson@gmail.com> | 2013-10-05 00:19:08 +0200 |
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committer | Spencer Oliver <spen@spen-soft.co.uk> | 2013-10-15 20:41:08 +0000 |
commit | ff5ec942d80a34e20b5a3ca3328f7e6a55fb309b (patch) | |
tree | 1d5682ae57f84d16f136b27ee75a6158790fca3f /src/target/arm7tdmi.c | |
parent | 8e6e7948de11e69fa53e7b7f306d35d6d4904b14 (diff) |
arm7_9: Avoid infinite loops in bulk write dispatching
Add a mandatory field in struct arm7_9_common for regular, non-optimized
memory writes. Together with the existing bulk_memory_write field, this
allows variants to select any combination of implementations for regular
and bulk writes, without risking infinite loops from accidentally using
bulk writes for implementing bulk writes.
ARM 7/9 targets may now select arm7_9_memory_write_opt as their
target.write_memory implementation, which will dispatch to
arm7_9_common.bulk_write_memory if possible, or fallback to
arm7_9_common.write_memory otherwise.
To avoid loops, bulk write implementations mustn't call any other
functions than arm7_9_write_memory_no_opt() to write memory; it will
unconditionally call arm7_9_common.write_memory. If they fail, they should
simply return error to allow the caller to fallback to regular writes.
Tested on a regular ARM7TDMI only.
Change-Id: Iae42a6e093e2df68c4823c927d757ae8f42ef388
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/1685
Tested-by: jenkins
Reviewed-by: Sergey A. Borshch <sb-sf@users.sourceforge.net>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Diffstat (limited to 'src/target/arm7tdmi.c')
-rw-r--r-- | src/target/arm7tdmi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/target/arm7tdmi.c b/src/target/arm7tdmi.c index 4c7cce19..3dc00134 100644 --- a/src/target/arm7tdmi.c +++ b/src/target/arm7tdmi.c @@ -648,6 +648,7 @@ int arm7tdmi_init_arch_info(struct target *target, arm7_9->enable_single_step = arm7_9_enable_eice_step; arm7_9->disable_single_step = arm7_9_disable_eice_step; + arm7_9->write_memory = arm7_9_write_memory; arm7_9->bulk_write_memory = arm7_9_bulk_write_memory; arm7_9->post_debug_entry = NULL; |