opentitanlib/test_utils/
object.rs

1// Copyright lowRISC contributors (OpenTitan project).
2// Licensed under the Apache License, Version 2.0, see LICENSE for details.
3// SPDX-License-Identifier: Apache-2.0
4
5use anyhow::{Context, Result};
6use object::{Object, ObjectSection, ObjectSymbol};
7
8/// Load a symbol's data from an object file.
9pub fn symbol_data(object: &object::read::File, name: &str) -> Result<Vec<u8>> {
10    let mut symbols = object.symbols();
11    let symbol = symbols
12        .find(|symbol| symbol.name() == Ok(name))
13        .with_context(|| format!("could not find symbol {name} in ELF"))?;
14
15    let section_index = symbol
16        .section_index()
17        .with_context(|| format!("symbol {name} was did not have a section index"))?;
18    let section = object
19        .section_by_index(section_index)
20        .with_context(|| format!("could not find section containing {name}"))?;
21
22    let offset = (symbol.address() - section.address()) as usize;
23    let data = section.uncompressed_data()?;
24    let data = &data[offset..][..symbol.size() as usize];
25
26    Ok(data.to_vec())
27}
28
29/// Get a symbol's address from an object file.
30pub fn symbol_addr(object: &object::read::File, name: &str) -> Result<u32> {
31    let addr = object
32        .symbols()
33        .find(|symbol| symbol.name() == Ok(name))
34        .with_context(|| format!("failed to find {name} symbol"))?
35        .address();
36    Ok(addr as u32)
37}
opentitanlib/test_utils/object.rs

opentitanlib/test_utils/
object.rs
