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target/cortex_m.c: vector_catch command checks if a target is examined 

If a target is not examined, command vector_catch crashes while accessing
the debug_ap NULL pointer.

maskisr and reset_config commands don't require this check.

Change-Id: I949b6f6e8b983327dd98fbe403735141f8f0b5d6
Signed-off-by: Daniel Trnka <daniel.trnka@gmail.com>
Reviewed-on: http://openocd.zylin.com/5813
Tested-by: jenkins
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Daniel Trnka 2020-08-17 17:51:43 +02:00 committed by Antonio Borneo
parent d7d70c2719
commit 87b95ab212
1 changed files with 5 additions and 0 deletions
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src/target/cortex_m.c
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@ -2502,6 +2502,11 @@ COMMAND_HANDLER(handle_cortex_m_vector_catch_command)
if (retval != ERROR_OK)
return retval;
if (!target_was_examined(target)) {
LOG_ERROR("Target not examined yet");
return ERROR_FAIL;
}
retval = mem_ap_read_atomic_u32(armv7m->debug_ap, DCB_DEMCR, &demcr);
if (retval != ERROR_OK)
return retval;