Kernel Symbols

Collaboration diagram for Kernel Symbols:

Data Structures
struct	kernel_symbol
	A single symbol entry inside the symbol table @info The structure is ALWAYS followed by the symbol's name's string. More...
struct	kernel_symbol_table
	The symbol table for the kernel. More...

Functions
ALWAYS_INLINE const char *	kernel_symbol_name (const kernel_symbol_t *sym)
	Retrieve a kernel symbol's raw name.
const kernel_symbol_t *	kernel_symbol_from_address (vaddr_t address)
	Find the kernel symbol associated with a given address. More...

Variables
u32	kernel_symbol::size
	Size of the symbol (sizeof(size) + sizeof(address) + strlen(name))
u32	kernel_symbol::address
	Address of the symbol.

Detailed Description

Kernel Symbols

For debugging purposes, we want to be able to retrieve the name of a kernel's function given its address. This can let us identify a faulting address more easily.

To do so, during the compilation process, we manually inject the list of kernel's functions names, as well as their respective address, inside of the .kernel_symbols ELF segment.

Function Documentation

kernel_symbol_from_address()

const kernel_symbol_t * kernel_symbol_from_address

(

vaddr_t

address

)

The returned symbol is the one with the biggest address lower than the one we're looking for.