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implmented mmap2

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This commit is contained in:
Lachlan Sneff
2018-11-29 00:11:36 -05:00
parent 65b36eb6ba
commit 1db0306b8b
4 changed files with 72 additions and 33 deletions
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29
src/webassembly/instance.rs
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@ -70,6 +70,8 @@ fn get_function_addr(
pub struct EmscriptenData {
pub malloc: extern "C" fn(i32, &mut Instance) -> u32,
pub free: extern "C" fn(i32, &mut Instance),
pub memalign: extern "C" fn (u32, u32, &mut Instance) -> u32,
pub memset: extern "C" fn(u32, i32, u32, &mut Instance) -> u32,
}
impl fmt::Debug for EmscriptenData {
@ -514,28 +516,23 @@ impl Instance {
debug!("emscripten::initiating data");
let malloc_export = module.info.exports.get("_malloc");
let free_export = module.info.exports.get("_free");
if malloc_export.is_none() || free_export.is_none() {
None
} else {
let malloc_index = if let Some(Export::Function(malloc_index)) = malloc_export {
malloc_index
} else {
panic!("Expected malloc function")
};
let malloc_addr =
get_function_addr(&malloc_index, &import_functions, &functions);
let memalign_export = module.info.exports.get("_memalign");
let memset_export = module.info.exports.get("_memset");
let free_index = if let Some(Export::Function(free_index)) = free_export {
free_index
} else {
panic!("Expected free export function")
};
if let (Some(Export::Function(malloc_index)), Some(Export::Function(free_index)), Some(Export::Function(memalign_index)), Some(Export::Function(memset_index))) = (malloc_export, free_export, memalign_export, memset_export) {
let malloc_addr = get_function_addr(&malloc_index, &import_functions, &functions);
let free_addr = get_function_addr(&free_index, &import_functions, &functions);
let memalign_addr = get_function_addr(&memalign_index, &import_functions, &functions);
let memset_addr = get_function_addr(&memset_index, &import_functions, &functions);
Some(EmscriptenData {
malloc: mem::transmute(malloc_addr),
free: mem::transmute(free_addr),
memalign: mem::transmute(memalign_addr),
memset: mem::transmute(memset_addr),
})
} else {
None
}
}
} else {