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fix underflow in duration calculation

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Folkert 2022-09-24 22:53:50 +02:00
parent 220f975ea8
commit 320aa504cd
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1 changed files with 29 additions and 25 deletions
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54
crates/linker/src/lib.rs
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@ -2102,15 +2102,14 @@ fn surgery_elf_and_macho(
report_timing("Loading and mmap-ing", load_and_mmap_duration);
report_timing("Output Generation", out_gen_duration);
report_timing("Flushing Data to Disk", flushing_data_duration);
report_timing(
"Other",
total_duration
- loading_metadata_duration
- app_parsing_duration
- load_and_mmap_duration
- out_gen_duration
- flushing_data_duration,
);
let sum = loading_metadata_duration
+ app_parsing_duration
+ load_and_mmap_duration
+ out_gen_duration
+ flushing_data_duration;
report_timing("Other", total_duration.saturating_sub(sum));
report_timing("Total", total_duration);
}
}
@ -2752,34 +2751,39 @@ fn surgery_elf(
};
if verbose {
println!(
"\t\tRelocation base location: {:+x} (virt: {:+x})",
base, virt_base
"\t\tRelocation base location: {base:+x} (virt: {virt_base:+x})",
);
println!("\t\tFinal relocation target offset: {:+x}", target);
println!("\t\tFinal relocation target offset: {target:+x}");
}
match rel.1.size() {
32 => {
let data = (target as i32).to_le_bytes();
exec_mmap[base..base + 4].copy_from_slice(&data);
exec_mmap[base..][..4].copy_from_slice(&data);
}
64 => {
let data = target.to_le_bytes();
exec_mmap[base..base + 8].copy_from_slice(&data);
exec_mmap[base..][..8].copy_from_slice(&data);
}
x => {
internal_error!("Relocation size not yet supported: {}", x);
other => {
internal_error!("Relocation size not yet supported: {other}");
}
}
} else if matches!(app_obj.symbol_by_index(index), Ok(sym) if ["__divti3", "__udivti3"].contains(&sym.name().unwrap_or_default()))
{
// Explicitly ignore some symbols that are currently always linked.
continue;
} else {
internal_error!(
"Undefined Symbol in relocation, {:+x?}: {:+x?}",
rel,
app_obj.symbol_by_index(index)
);
// Explicitly ignore some symbols that are currently always linked.
const ALWAYS_LINKED: &[&str] = &["__divti3", "__udivti3"];
match app_obj.symbol_by_index(index) {
Ok(sym) if ALWAYS_LINKED.contains(&sym.name().unwrap_or_default()) => {
continue
}
_ => {
internal_error!(
"Undefined Symbol in relocation, {:+x?}: {:+x?}",
rel,
app_obj.symbol_by_index(index)
);
}
}
}
}