LLEXT symbols

Linkable loadable extension symbol. More...

Data Structures
struct	llext_const_symbol
	Constant symbols are unchangeable named memory addresses. More...
struct	llext_symbol
	Symbols are named memory addresses. More...
struct	llext_symtable
	A symbol table. More...

Macros
#define	EXPORT_SYMBOL(x)
	Export a constant symbol to a table of symbols.
#define	LL_EXTENSION_SYMBOL(x)
#define	EXPORT_SYSCALL(x)   EXPORT_SYMBOL(z_impl_ ## x)
	Export a system call to a table of symbols.

Detailed Description

Linkable loadable extension symbol.

Macro Definition Documentation

EXPORT_SYMBOL

#define EXPORT_SYMBOL

(

x

)

#include <zephyr/llext/symbol.h>

Value:

        static const STRUCT_SECTION_ITERABLE(llext_const_symbol, x ## _sym) = { \
                .name = STRINGIFY(x), .addr = &x,                               \
        }

Export a constant symbol to a table of symbols.

Takes a symbol (function or object) by symbolic name and adds the name and address of the symbol to a table of symbols that may be used for linking.

Parameters

x	Symbol to export

EXPORT_SYSCALL

#define EXPORT_SYSCALL

(

x

)

EXPORT_SYMBOL(z_impl_ ## x)

#include <zephyr/llext/symbol.h>

Export a system call to a table of symbols.

Takes a system call name and uses EXPORT_SYMBOL() to export the respective function.

Parameters

x	System call to export

LL_EXTENSION_SYMBOL

#define LL_EXTENSION_SYMBOL

(

x

)

#include <zephyr/llext/symbol.h>

Value:

        struct llext_symbol Z_GENERIC_SECTION(".exported_sym") __used           \
                symbol_##x = {STRINGIFY(x), &x}