wasm_coredump_encoder/
lib.rs

1#![no_std]
2extern crate alloc;
3use alloc::vec::Vec;
4use core::convert::Infallible;
5use wasm_coredump_types as types;
6
7fn write_unsigned_leb128(buffer: &mut Vec<u8>, n: u64) {
8    leb128::write::unsigned(buffer, n).expect("could not write LEB128");
9}
10
11fn write_utf8(buffer: &mut Vec<u8>, v: &str) {
12    let bytes = v.as_bytes().to_vec();
13    write_unsigned_leb128(buffer, bytes.len() as u64);
14    buffer.extend_from_slice(&bytes);
15}
16
17pub fn encode_coredump_process(
18    buffer: &mut Vec<u8>,
19    process_info: &types::ProcessInfo,
20) -> Result<(), Infallible> {
21    buffer.push(0x0);
22    write_utf8(buffer, &process_info.executable_name);
23
24    Ok(())
25}
26
27pub fn encode_coredump_stack(
28    buffer: &mut Vec<u8>,
29    stack: &types::CoreStack,
30) -> Result<(), Infallible> {
31    // thread-info
32    {
33        buffer.push(0x0); // version 0
34        write_utf8(buffer, &stack.thread_info.thread_name);
35    }
36
37    // frames
38    write_unsigned_leb128(buffer, stack.frames.len() as u64);
39
40    for frame in &stack.frames {
41        buffer.push(0x0); // version 0
42        write_unsigned_leb128(buffer, frame.instanceidx as u64);
43        write_unsigned_leb128(buffer, frame.funcidx as u64);
44        write_unsigned_leb128(buffer, frame.codeoffset as u64);
45        write_unsigned_leb128(buffer, 0); // locals vec size
46        write_unsigned_leb128(buffer, 0); // stack vec size
47    }
48
49    Ok(())
50}
wasm_coredump_encoder/lib.rs

wasm_coredump_encoder/
lib.rs
