CA           TEEC_InvokeCommand()
                             |
                             |
                             v
     TA              dump_coverage()
                             |
                             |
                             |
TA libgcov                   v
              gcov.c:gcov_dump_all_coverage_data()
                             |
                             |
                             v
              gcov_gcc_4_7.c:dump_all_coverage_data()
                             |
                             |
                             v
             ta_dump_coverage.c:ta_direct_dump_data()
                             |
                         PTA_CMD_GCOV_DUMP
PTA gcov                     |
                             v
                   gcov.c:pta_gcov_dump()
                             |
                             |
Core libgcov                 v
              gcov.c:gcov_dump_coverage_data()
                             |
                             |
   core                      |
                             v
              tee_gcov_writer.c:tee_gcov_writer()
                             |
                             |
                           OPTEE_RPC_CMD_GCOV
                             |
   tee_supplicant            v

             Handle the RPC to write coverage data in REE FS