The linker defines special symbols that can be used to determine where some sections where linked in memory. These symbols can be used in your code, if required.
The link address of a section can be obtained from the value of a global
symbol with name __Lname (two leading underscores) where
name is the name of the section. For example,
__LbssBANK0 is the low bound of the bssBANK0 section. The
highest address of a section (i.e., the link address plus the size) is represented by the
symbol __Hname. If the section has different load and link
addresses, the load start address is represented by the symbol
__Bname.
Sections that are not placed in memory using a -P linker
option. See P: Position Psect are not
assigned this type of symbol, and note that section names can change from one device to
another.
Assembly code can use these symbol by globally declaring them (noting the two leading underscore characters in the names), for example:
GLOBAL __Lidataand C code could use them by declaring a symbol such as the following.
extern char * _Lidata;Note that there is only one leading underscore in the C domain. As the symbol represents an address, a pointer is the typical type choice.