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Add memory offset addr impl

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This commit is contained in:
Steve Akinyemi 2019-01-11 17:10:59 +01:00
parent 82cb5dd906
commit ba6828c3d4
1 changed files with 19 additions and 2 deletions
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21
lib/runtime/src/instance.rs
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@ -344,7 +344,24 @@ impl Namespace for Instance {
// TODO Remove this later, only needed for compilation till emscripten is updated
impl Instance {
pub fn memory_offset_addr(&self, _index: usize, _offset: usize) -> *const usize {
unimplemented!("TODO replace this emscripten stub")
pub fn memory_offset_addr(&self, index: usize, offset: usize) -> *const u8 {
// Get vm context.
let vmctx = &self.vmctx;
// Check if the index specified refers to an imported memory.
if index < self.module.0.imported_memories.len() {
// Get imported memory at specified index.
let memory = unsafe { vmctx.imported_memories.add(index) };
// Get the actual address of the specified offset.
return unsafe { (*(*memory).memory).base.add(offset) }
}
// Index points to a locally-defined memory
// Get local memory at specified index.
let memory = unsafe { vmctx.memories.add(index) };
// Get the actual address of the specified offset.
unsafe { (*memory).base.add(offset) }
}
}