Rust binding for LLVM MC disassembler

Using this for debugging purposes

Author: zznop

binaryninjacore.h

@@ -7532,11 +7532,11 @@ extern "C"
 
 	// LLVM Services APIs
 	BINARYNINJACOREAPI void BNLlvmServicesInit(void);
-
 	BINARYNINJACOREAPI int BNLlvmServicesAssemble(const char* src, int dialect, const char* triplet, int codeModel,
 	    int relocMode, char** outBytes, int* outBytesLen, char** err, int* errLen);
-
 	BINARYNINJACOREAPI void BNLlvmServicesAssembleFree(char* outBytes, char* err);
+	BINARYNINJACOREAPI int BNLlvmServicesDisasmInstruction(const char *triplet, uint8_t *src, int srcLen,
+		uint64_t addr, char *result, size_t resultMaxSize);
 
 	// Filesystem functionality
 	BINARYNINJACOREAPI bool BNDeleteFile(const char* path);

rust/src/lib.rs

@@ -89,6 +89,7 @@ pub mod variable;
 pub mod websocket;
 pub mod worker_thread;
 pub mod workflow;
+pub mod llvm;
 
 use crate::file_metadata::FileMetadata;
 use crate::function::Function;

rust/src/llvm.rs

@@ -0,0 +1,23 @@
+use binaryninjacore_sys::BNLlvmServicesDisasmInstruction;
+use std::ffi::CStr;
+
+pub fn disas_instruction(triplet: &str, data: &[u8], address64: u64) -> Option<(usize, String)> {
+    return unsafe {
+        let mut buf = vec![0; 256];
+        let instr_len = BNLlvmServicesDisasmInstruction(
+            triplet.as_ptr() as *const i8,
+            data.as_ptr() as *mut u8,
+            data.len() as i32,
+            address64 as u64,
+            buf.as_mut_ptr() as *mut i8,
+            buf.len() as usize,
+        );
+        if instr_len > 0 {
+            let cstr = CStr::from_ptr(buf.as_ptr() as *const i8);
+            let string = cstr.to_str().unwrap().to_string();
+            Some((instr_len as usize, string))
+        } else {
+            None
+        }
+    };
+}