diff options
Diffstat (limited to 'nuttx/configs/README.txt')
| -rw-r--r-- | nuttx/configs/README.txt | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/nuttx/configs/README.txt b/nuttx/configs/README.txt index dc9d8d88e8..1b405b3e45 100644 --- a/nuttx/configs/README.txt +++ b/nuttx/configs/README.txt @@ -7,6 +7,7 @@ Table of Contents o Summary of Files o Supported Architectures o Configuring NuttX + o Building Symbol Tables Board-Specific Configurations ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -1805,3 +1806,26 @@ command line like: cd tools ./configure.sh -a <app-dir> <board-name>/<config-dir> + +Building Symbol Tables +^^^^^^^^^^^^^^^^^^^^^^ + +Symbol tables are needed at several of the binfmt interfaces in order to bind +a module to the base code. These symbol tables can be tricky to create and +will probably have to be tailored for any specific application, balancing +the number of symbols and the size of the symbol table against the symbols +required by the applications. + +The top-level System.map file is one good source of symbol information +(which, or course, was just generated from the top-level nuttx file +using the GNU 'nm' tool). + +There are also common-separated value (CSV) values in the source try that +provide information about symbols. In particular: + + nuttx/syscall/syscall.csv - Describes the NuttX RTOS interface, and + nuttx/lib/lib.csv - Describes the NuttX C library interface. + +There is a tool at nuttx/tools/mksymtab that will use these CSV files as +input to generate a generic symbol table. See nuttx/tools/README.txt for +more information about using the mksymtab tool. |