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libdebugger: Work around assert when using _Thread_Executing.

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Using _Thread_Executing with RTEMS_DEBUG results in an `assert` if
the server accesses invalid memory.

Updates #2993.
This commit is contained in:
Chris Johns
2017-04-14 17:12:44 +10:00
parent 50b1269626
commit b53ad4615a
2 changed files with 8 additions and 2 deletions
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7
cpukit/libdebugger/rtems-debugger-target.c
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@@ -284,7 +284,12 @@ rtems_debugger_target_exception(CPU_Exception_frame* frame)
if (!rtems_interrupt_is_in_progress()) {
rtems_debugger_threads* threads = rtems_debugger->threads;
Thread_Control* thread = _Thread_Executing;
#if USE_THREAD_EXECUTING
Thread_Control* thread = _Thread_Executing;
#else
const Per_CPU_Control* cpu = _Per_CPU_Get_snapshot();
Thread_Control* thread = _Per_CPU_Get_executing(cpu);
#endif
rtems_id* excludes;
const rtems_id tid = thread->Object.id;
DB_UINT pc;