On 06/10/2022 10:23, Sebastian Huber wrote:
This patch set started with an 8 byte overwrite of the interrupt stack while
porting an application from RTEMS 5 to 6.
The overwrite was due to a mismatch of the size returned by
_TLS_Get_allocation_size() and the actual usage of the area. To fix this issue
it was necessary to add a new CPU port option:
CPU_THREAD_LOCAL_STORAGE_VARIANT. I checked also the glibc implementations.
It seems that on some architectures (for example powerpc) the TCB is used for a
couple of more things. For RTEMS, we don't really need the DTV and TCB. It
could be useful for debuggers, however, then we probably need also some glibc
compatibility.
Add a new fatal error to catch a failing idle thread initialization:
INTERNAL_ERROR_IDLE_THREAD_CREATE_FAILED. This can only happen if a thread
create extension fails for an idle thread.
By default, allocate the IDLE task storage areas from the RTEMS Workspace.
This avoids having to estimate the thread-local storage size in the default
configuration.
Add the application configuration option CONFIGURE_IDLE_TASK_STORAGE_SIZE to
request a static allocation of the task storage area for IDLE tasks.
v2:
* Add CONFIGURE_IDLE_TASK_STORAGE_SIZE instead of
CONFIGURE_IDLE_TASK_MINIMUM_STACK_SIZE.
Any objections to commit this version?
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