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target: document that target_poll() will report and clear sticky errors 

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
This commit is contained in:
Øyvind Harboe 2010-11-09 09:17:49 +01:00
parent e7b2958229
commit 6c04f1e440
1 changed files with 12 additions and 0 deletions
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12
src/target/target.h
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@ -257,6 +257,18 @@ int target_unregister_event_callback(
int (*callback)(struct target *target, int (*callback)(struct target *target,
enum target_event event, void *priv), enum target_event event, void *priv),
void *priv); void *priv);
/* Poll the status of the target, detect any error conditions and report them.
*
* Also note that this fn will clear such error conditions, so a subsequent
* invocation will then succeed.
*
* These error conditions can be "sticky" error conditions. E.g. writing
* to memory could be implemented as an open loop and if memory writes
* fails, then a note is made of it, the error is sticky, but the memory
* write loop still runs to completion. This improves performance in the
* normal case as there is no need to verify that every single write succeed,
* yet it is possible to detect error condtions.
*/
int target_poll(struct target *target); int target_poll(struct target *target);
int target_resume(struct target *target, int current, uint32_t address, int target_resume(struct target *target, int current, uint32_t address,
int handle_breakpoints, int debug_execution); int handle_breakpoints, int debug_execution);