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Stack allocate arguments

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This commit is contained in:
Lachlan Sneff
2018-12-06 15:21:58 -05:00
parent 266ced4311
commit 28a668f38c
3 changed files with 34 additions and 15 deletions
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8
src/webassembly/instance.rs
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@ -74,6 +74,7 @@ pub struct EmscriptenData {
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,
pub stack_alloc: extern "C" fn (u32, &mut Instance) -> u32,
}
impl fmt::Debug for EmscriptenData {
@ -550,11 +551,13 @@ impl Instance {
let free_export = module.info.exports.get("_free");
let memalign_export = module.info.exports.get("_memalign");
let memset_export = module.info.exports.get("_memset");
let stack_alloc_export = module.info.exports.get("stackAlloc");
let mut malloc_addr = 0 as *const u8;
let mut free_addr = 0 as *const u8;
let mut memalign_addr = 0 as *const u8;
let mut memset_addr = 0 as *const u8;
let mut stack_alloc_addr = 0 as _;
if malloc_export.is_none() && free_export.is_none() && memalign_export.is_none() && memset_export.is_none() {
None
@ -575,11 +578,16 @@ impl Instance {
memset_addr = get_function_addr(&memset_index, &import_functions, &functions);
}
if let Some(Export::Function(stack_alloc_index)) = stack_alloc_export {
stack_alloc_addr = get_function_addr(&stack_alloc_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),
stack_alloc: mem::transmute(stack_alloc_addr),
})
}
}