feat: add vm asm fuzzer

Author: 0xdeafbeef

Cargo.toml

@@ -39,6 +39,7 @@ tracing = "0.1"
 tracing-subscriber = "0.3"
 tracing-test = "0.2"
 
+everscale-asm = { git = "https://github.com/broxus/everscale-asm.git", rev = "95ec11ccad067726a9495b0bd2c700e64171c6af" }
 everscale-asm-macros = { git = "https://github.com/broxus/everscale-asm.git", rev = "95ec11ccad067726a9495b0bd2c700e64171c6af" }
 
 tycho-vm = { path = "./vm" }

fuzz/Cargo.toml

@@ -14,6 +14,13 @@ test = false
 doc = false
 bench = false
 
+[[bin]]
+name = "vm_asm"
+path = "fuzz_targets/vm_asm.rs"
+test = false
+doc = false
+bench = false
+
 [[bin]]
 name = "action_phase_real"
 path = "fuzz_targets/action_phase_real.rs"
@@ -34,3 +41,4 @@ everscale-types = { workspace = true, features = ["arbitrary", "base64"] }
 libfuzzer-sys = { workspace = true }
 tycho-executor = { path = "../executor" }
 tycho-vm = { path = "../vm", features = ["arbitrary"] }
+everscale-asm = { workspace = true }

fuzz/fuzz_targets/vm_asm.rs

@@ -0,0 +1,28 @@
+#![no_main]
+
+use everscale_asm::Code;
+use libfuzzer_sys::{fuzz_target, Corpus};
+use tycho_vm::{CustomSmcInfo, GasParams, SafeRc, VmState};
+
+fuzz_target!(|code: String| -> Corpus {
+    if !code.is_ascii() {
+        return Corpus::Reject;
+    }
+
+    let code = match Code::assemble(&code) {
+        Ok(code) => code,
+        Err(_) => return Corpus::Reject,
+    };
+
+    let mut vm = VmState::builder()
+        .with_code(code)
+        .with_smc_info(CustomSmcInfo {
+            version: VmState::DEFAULT_VERSION,
+            c7: SafeRc::new(Vec::new()),
+        })
+        .with_gas(GasParams::getter())
+        .build();
+
+    _ = vm.run();
+    Corpus::Keep
+});