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LibWasm: Start implementing a naive bytecode interpreter

As the parser now flattens out the instructions and inserts synthetic
nesting/structured instructions where needed, we can treat the whole
thing as a simple parsed bytecode stream.
This currently knows how to execute the following instructions:
- unreachable
- nop
- local.get
- local.set
- {i,f}{32,64}.const
- block
- loop
- if/else
- branch / branch_if
- i32_add
- i32_and/or/xor
- i32_ne

This also extends the 'wasm' utility to optionally execute the first
function in the module with optionally user-supplied arguments.
This commit is contained in:
Ali Mohammad Pur 2021-05-01 03:19:01 +04:30 committed by Andreas Kling
parent faa34a0a8b
commit 056be42c0b
10 changed files with 513 additions and 30 deletions

View file

@ -12,6 +12,11 @@ namespace Wasm {
struct Interpreter {
void interpret(Configuration&);
private:
void interpret(Configuration&, InstructionPointer&, const Instruction&);
void branch_to_label(Configuration&, LabelIndex);
ReadonlyBytes load_from_memory(Configuration&, const Instruction&, size_t);
};
}