language-servers/roc
1
0
Fork 0
mirror of https://github.com/roc-lang/roc.git synced 2025-09-29 14:54:47 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7

Adjust relocation offset to account for inserts, preamble, function offset, etc.

Browse source
This commit is contained in:
Brian Carroll 2021-10-27 16:50:30 +01:00
parent 1def56ea04
commit f066adbe05
5 changed files with 141 additions and 70 deletions
Download patch file Download diff file Expand all files Collapse all files

15
compiler/gen_wasm/src/lib.rs
View file

@ -44,7 +44,7 @@ pub fn build_module<'a>(
env: &'a Env,
procedures: MutMap<(Symbol, ProcLayout<'a>), Proc<'a>>,
) -> Result<std::vec::Vec<u8>, String> {
let (builder, code_section_bytes, _) = build_module_help(env, procedures)?;
let (builder, code_section_bytes) = build_module_help(env, procedures)?;
let mut module = builder.build();
replace_code_section(&mut module, code_section_bytes);
@ -56,13 +56,11 @@ pub fn build_module<'a>(
pub fn build_module_help<'a>(
env: &'a Env,
procedures: MutMap<(Symbol, ProcLayout<'a>), Proc<'a>>,
) -> Result<(builder::ModuleBuilder, std::vec::Vec<u8>, u32), String> {
) -> Result<(builder::ModuleBuilder, std::vec::Vec<u8>), String> {
let proc_symbols = Vec::from_iter_in(procedures.keys().map(|(sym, _)| *sym), env.arena);
let mut backend = WasmBackend::new(env, proc_symbols);
let mut layout_ids = LayoutIds::default();
let mut main_function_index = None;
for ((sym, layout), proc) in procedures.into_iter() {
let function_index = backend.build_proc(proc, sym)?;
if env.exposed_to_host.contains(&sym) {
@ -76,12 +74,9 @@ pub fn build_module_help<'a>(
.build();
backend.module_builder.push_export(export);
main_function_index = Some(function_index);
}
}
main_function_index.ok_or(format!("No functions exposed to host"))?;
// Update code section length
let inner_length = (backend.code_section_bytes.len() - 5) as u32;
overwrite_padded_u32(&mut backend.code_section_bytes[0..5], inner_length);
@ -106,11 +101,7 @@ pub fn build_module_help<'a>(
.build();
backend.module_builder.push_global(stack_pointer_global);
Ok((
backend.module_builder,
backend.code_section_bytes,
main_function_index.unwrap(),
))
Ok((backend.module_builder, backend.code_section_bytes))
}
/// Replace parity-wasm's code section with our own handmade one