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make the surgical linker aware of custom exported closure names

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This commit is contained in:
Folkert 2022-01-25 00:13:22 +01:00
parent eb08c12099
commit 73bc50c952
7 changed files with 124 additions and 79 deletions
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42
linker/src/lib.rs
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@ -142,10 +142,11 @@ pub fn build_and_preprocess_host(
target: &Triple,
host_input_path: &Path,
exposed_to_host: Vec<String>,
exported_closure_types: Vec<String>,
target_valgrind: bool,
) -> io::Result<()> {
let dummy_lib = host_input_path.with_file_name("libapp.so");
generate_dynamic_lib(target, exposed_to_host, &dummy_lib)?;
generate_dynamic_lib(target, exposed_to_host, exported_closure_types, &dummy_lib)?;
rebuild_host(
opt_level,
target,
@ -193,6 +194,7 @@ pub fn link_preprocessed_host(
fn generate_dynamic_lib(
_target: &Triple,
exposed_to_host: Vec<String>,
exported_closure_types: Vec<String>,
dummy_lib_path: &Path,
) -> io::Result<()> {
let dummy_obj_file = Builder::new().prefix("roc_lib").suffix(".o").tempfile()?;
@ -203,25 +205,37 @@ fn generate_dynamic_lib(
write::Object::new(BinaryFormat::Elf, Architecture::X86_64, Endianness::Little);
let text_section = out_object.section_id(write::StandardSection::Text);
let mut add_symbol = |name: &String| {
out_object.add_symbol(write::Symbol {
name: name.as_bytes().to_vec(),
value: 0,
size: 0,
kind: SymbolKind::Text,
scope: SymbolScope::Dynamic,
weak: false,
section: write::SymbolSection::Section(text_section),
flags: SymbolFlags::None,
});
};
for sym in exposed_to_host {
for name in &[
format!("roc__{}_1_exposed", sym),
format!("roc__{}_1_exposed_generic", sym),
format!("roc__{}_1_Fx_caller", sym),
format!("roc__{}_1_Fx_size", sym),
format!("roc__{}_1_Fx_result_size", sym),
format!("roc__{}_size", sym),
] {
out_object.add_symbol(write::Symbol {
name: name.as_bytes().to_vec(),
value: 0,
size: 0,
kind: SymbolKind::Text,
scope: SymbolScope::Dynamic,
weak: false,
section: write::SymbolSection::Section(text_section),
flags: SymbolFlags::None,
});
add_symbol(name);
}
for closure_type in &exported_closure_types {
for name in &[
format!("roc__{}_1_{}_caller", sym, closure_type),
format!("roc__{}_1_{}_size", sym, closure_type),
format!("roc__{}_1_{}_result_size", sym, closure_type),
] {
add_symbol(name)
}
}
}
std::fs::write(