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author | Tomas Vanek <vanekt@fbl.cz> | 2017-11-21 22:57:39 +0100 |
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committer | Matthias Welwarsky <matthias@welwarsky.de> | 2018-03-03 08:40:09 +0000 |
commit | bb9d9c60264a905926e0d15f84842858d0de80b7 (patch) | |
tree | cb402f03c09d0c1358c87775eb5d4443b585caf2 /src/helper/command.h | |
parent | eaeb4191e55c3a23582ecb40b852f95c2e0ea917 (diff) | |
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target: use correct target in target-prefixed commands and event handlers
This change contains an alternative to Matthias Welwarsky's #4130
(target-prefixed commands) and to #4293 (event handlers).
get_current_target() must retrieve the target associated to the current
command. If no target associated, the current target of the command
context is used as a fallback.
Many Tcl event handlers work with the current target as if it were
the target issuing the event.
current_target in command_context is a number and has to be converted
to a pointer in every get_current_target() call.
The solution:
- Replace current_target in command_context by a target pointer
- Add another target pointer current_target_override
- get_current_target() returns current_target_override if set, otherwise
current_target
- Save, set and restore current_target_override to the current prefix
in run_command()
- Save, set and restore current_target_override to the event invoking
target in target_handle_event()
While on it use calloc when allocating a new command_context.
Change-Id: I9a82102e94dcac063743834a1d28da861b2e74ea
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Suggested-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Reviewed-on: http://openocd.zylin.com/4295
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
Diffstat (limited to 'src/helper/command.h')
-rw-r--r-- | src/helper/command.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/helper/command.h b/src/helper/command.h index f696ab8..1a26c06 100644 --- a/src/helper/command.h +++ b/src/helper/command.h @@ -49,7 +49,15 @@ struct command_context { Jim_Interp *interp; enum command_mode mode; struct command *commands; - int current_target; + struct target *current_target; + /* The target set by 'targets xx' command or the latest created */ + struct target *current_target_override; + /* If set overrides current_target + * It happens during processing of + * 1) a target prefixed command + * 2) an event handler + * Pay attention to reentrancy when setting override. + */ command_output_handler_t output_handler; void *output_handler_priv; }; @@ -168,6 +176,11 @@ struct command { command_handler_t handler; Jim_CmdProc *jim_handler; void *jim_handler_data; + /* Currently used only for target of target-prefixed cmd. + * Native OpenOCD commands use jim_handler_data exclusively + * as a target override. + * Jim handlers outside of target cmd tree can use + * jim_handler_data for any handler specific data */ enum command_mode mode; struct command *next; }; |