minabeoki opened a new pull request #5629:
URL: https://github.com/apache/incubator-nuttx/pull/5629


   ## Summary
   
   - In the case of BUILD_KERNEL, NuttX uses USR mode sp and SVC mode sp.
   - The kernel runs on SVC mode sp.
   - While the kernel is running, up_getsp() cannot get the TLS address.
   - The kernel requires tls_get_info() function.
   - For the user land, up_getsp() can be used.
   
   ## Impact
   
   BUILD_KERNEL
   
   ## Testing
   
   test program on custom Cortex-A9 board (BUILD_KERNEL)
   ostest on sabre-6quad:smp (QEMU, BUILD_FLAT)
   


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