liaozhaoyan / elfmap

dumps all elf file symbols

elfmap

get all elf file symbols

functions

refer to test.lua:

local elfmap = require("elfmap")

-- get libc path from env
local m = elfmap.new(libc)
local count = 0
for _, start, stop, sym in m:maps() do
    count = count + 1
    print(start, stop, sym)
end

assert(count == m:count(), string.format("map: %d, count:%d", count, m:count()))

local start, _ = m:symbol("pthread_self")
assert(start > 0)
local sym = m:query(start)
assert(sym == "pthread_self")

• new： new a elfmap object, the only parameter is the path to the elf file.

local m = elfmap.new(libc)

• maps：Iterate through all the symbol tables in the elf file.

for _, start, stop, sym in m:maps() do
    print(start, stop, sym)
end

• count: Gets the number of all symbols in the ELF file.
• item: Gets the array members based on the subscript.
• symbol: Gets the address offset of the specified symbol

local start, stop = m:symbol("pthread_self")

• query: Queries the symbol information corresponding to the specified address, returns the name, start and end address of the symbol, or [unknown], -1, -1 if there is no matching result

local sym, start, stop = m:query(start)