Merge cranelift/wasmtime fuzzing

fuzz/Cargo.toml

@@ -10,9 +10,13 @@ cargo-fuzz = true
 
 [dependencies]
 arbitrary = "0.2.0"
-wasmtime-fuzzing = { path = "../crates/fuzzing" }
-wasmtime = { path = "../crates/api" }
+cranelift-codegen = { path = "../cranelift/codegen" }
+cranelift-reader = { path = "../cranelift/reader" }
+cranelift-wasm = { path = "../cranelift/wasm" }
 libfuzzer-sys = "0.2.1"
+target-lexicon = "0.10"
+wasmtime = { path = "../crates/api" }
+wasmtime-fuzzing = { path = "../crates/fuzzing" }
 
 [[bin]]
 name = "compile"
@@ -43,3 +47,15 @@ name = "differential"
 path = "fuzz_targets/differential.rs"
 test = false
 doc = false
+
+[[bin]]
+name = "translate_module"
+path = "fuzz_targets/translate_module.rs"
+test = false
+doc = false
+
+[[bin]]
+name = "reader_parse_test"
+path = "fuzz_targets/reader_parse_test.rs"
+test = false
+doc = false

fuzz/fuzz_targets/reader_parse_test.rs

@@ -0,0 +1,12 @@
+#![no_main]
+
+use libfuzzer_sys::fuzz_target;
+
+use std::str;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(s) = str::from_utf8(data) {
+        let options = cranelift_reader::ParseOptions::default();
+        let _ = cranelift_reader::parse_test(s, options);
+    }
+});

fuzz/fuzz_targets/translate_module.rs

@@ -0,0 +1,17 @@
+#![no_main]
+
+use cranelift_codegen::{isa, settings};
+use cranelift_wasm::{translate_module, DummyEnvironment, ReturnMode};
+use libfuzzer_sys::fuzz_target;
+use std::str::FromStr;
+use target_lexicon::triple;
+use wasmtime_fuzzing::generators;
+
+fuzz_target!(|data: generators::WasmOptTtf| {
+    let flags = settings::Flags::new(settings::builder());
+    let triple = triple!("x86_64");
+    let isa = isa::lookup(triple).unwrap().finish(flags);
+    let mut dummy_environ =
+        DummyEnvironment::new(isa.frontend_config(), ReturnMode::NormalReturns, false);
+    translate_module(&data.wasm, &mut dummy_environ).unwrap();
+});