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wasm_interp: implement globals

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Brian Carroll 2022-11-21 23:47:09 +00:00
parent ff63831fd1
commit 335497c99f
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2 changed files with 48 additions and 22 deletions
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15
crates/wasm_interp/src/execute.rs
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@ -17,16 +17,23 @@ pub struct ExecutionState<'a> {
pub call_stack: CallStack<'a>,
pub value_stack: ValueStack<'a>,
pub globals: Vec<'a, Value>,
program_counter: usize,
}
impl<'a> ExecutionState<'a> {
pub fn new(arena: &'a Bump, memory_pages: u32, program_counter: usize) -> Self {
pub fn new<G>(arena: &'a Bump, memory_pages: u32, program_counter: usize, globals: G) -> Self
where
G: IntoIterator<Item = Value>,
{
let mem_bytes = memory_pages * MemorySection::PAGE_SIZE;
ExecutionState {
memory: Vec::with_capacity_in(mem_bytes as usize, arena),
call_stack: CallStack::new(arena),
value_stack: ValueStack::new(arena),
globals: Vec::from_iter_in(globals, arena),
program_counter,
}
}
@ -101,10 +108,12 @@ impl<'a> ExecutionState<'a> {
self.call_stack.set_local(index, value);
}
GETGLOBAL => {
todo!("{:?}", op_code);
let index = self.fetch_immediate_u32(module);
self.value_stack.push(self.globals[index as usize]);
}
SETGLOBAL => {
todo!("{:?}", op_code);
let index = self.fetch_immediate_u32(module);
self.globals[index as usize] = self.value_stack.pop();
}
I32LOAD => {
todo!("{:?}", op_code);