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use ihex;
use ihex::record::Record::*;
use std::{
fs::File,
io::{Read, Seek, SeekFrom},
path::Path,
};
use super::*;
use crate::{
config::{MemoryRange, MemoryRegion},
session::Session,
};
use thiserror::Error;
pub struct BinOptions {
base_address: Option<u32>,
skip: u32,
}
pub enum Format {
Bin(BinOptions),
Hex,
Elf,
}
#[derive(Debug, Error)]
pub enum FileDownloadError {
#[error("{0}")]
FlashLoader(#[from] FlashLoaderError),
#[error("{0}")]
IhexRead(#[from] ihex::reader::ReaderError),
#[error("{0}")]
IO(#[from] std::io::Error),
#[error("Object Error: {0}.")]
Object(&'static str),
}
pub fn download_file_with_progress_reporting(
session: &Session,
path: &Path,
format: Format,
memory_map: &[MemoryRegion],
progress: &FlashProgress,
) -> Result<(), FileDownloadError> {
download_file_internal(session, path, format, memory_map, progress)
}
pub fn download_file(
session: &Session,
path: &Path,
format: Format,
memory_map: &[MemoryRegion],
) -> Result<(), FileDownloadError> {
download_file_internal(
session,
path,
format,
memory_map,
&FlashProgress::new(|_| {}),
)
}
fn download_file_internal(
session: &Session,
path: &Path,
format: Format,
memory_map: &[MemoryRegion],
progress: &FlashProgress,
) -> Result<(), FileDownloadError> {
let mut file = match File::open(path) {
Ok(file) => file,
Err(e) => return Err(FileDownloadError::IO(e)),
};
let mut buffer = vec![];
let mut buffer_vec = vec![];
let mut loader = FlashLoader::new(memory_map, false);
match format {
Format::Bin(options) => download_bin(&mut buffer, &mut file, &mut loader, options),
Format::Elf => download_elf(&mut buffer, &mut file, &mut loader),
Format::Hex => download_hex(&mut buffer_vec, &mut file, &mut loader),
}?;
loader
.commit(session, progress, false)
.map_err(FileDownloadError::FlashLoader)
}
fn download_bin<'b, T: Read + Seek>(
buffer: &'b mut Vec<u8>,
file: &'b mut T,
loader: &mut FlashLoader<'_, 'b>,
options: BinOptions,
) -> Result<(), FileDownloadError> {
file.seek(SeekFrom::Start(u64::from(options.skip)))?;
file.read_to_end(buffer)?;
loader.add_data(
if let Some(address) = options.base_address {
address
} else {
0
},
buffer.as_slice(),
)?;
Ok(())
}
fn download_hex<'b, T: Read + Seek>(
buffer: &'b mut Vec<(u32, Vec<u8>)>,
file: &mut T,
loader: &mut FlashLoader<'_, 'b>,
) -> Result<(), FileDownloadError> {
let mut _extended_segment_address = 0;
let mut extended_linear_address = 0;
let mut data = String::new();
file.read_to_string(&mut data)?;
for record in ihex::reader::Reader::new(&data) {
let record = record?;
match record {
Data { offset, value } => {
let offset = extended_linear_address | offset as u32;
buffer.push((offset, value));
}
EndOfFile => return Ok(()),
ExtendedSegmentAddress(address) => {
_extended_segment_address = address * 16;
}
StartSegmentAddress { .. } => (),
ExtendedLinearAddress(address) => {
extended_linear_address = (address as u32) << 16;
}
StartLinearAddress(_) => (),
};
}
for (offset, data) in buffer {
loader.add_data(*offset, data.as_slice())?;
}
Ok(())
}
fn download_elf<'b, T: Read + Seek>(
buffer: &'b mut Vec<u8>,
file: &'b mut T,
loader: &mut FlashLoader<'_, 'b>,
) -> Result<(), FileDownloadError> {
file.read_to_end(buffer)?;
use goblin::elf::program_header::*;
if let Ok(binary) = goblin::elf::Elf::parse(&buffer.as_slice()) {
for ph in &binary.program_headers {
if ph.p_type == PT_LOAD && ph.p_filesz > 0 {
log::debug!("Found loadable segment containing:");
let sector: core::ops::Range<u32> =
ph.p_offset as u32..ph.p_offset as u32 + ph.p_filesz as u32;
for sh in &binary.section_headers {
if sector.contains_range(
&(sh.sh_offset as u32..sh.sh_offset as u32 + sh.sh_size as u32),
) {
log::debug!("{:?}", &binary.shdr_strtab[sh.sh_name]);
#[cfg(feature = "hexdump")]
for line in hexdump::hexdump_iter(
&buffer[sh.sh_offset as usize..][..sh.sh_size as usize],
) {
log::trace!("{}", line);
}
}
}
loader.add_data(
ph.p_paddr as u32,
&buffer[ph.p_offset as usize..][..ph.p_filesz as usize],
)?;
}
}
}
Ok(())
}