From 501fe3ec7a63a534fca3926a5fc4267f6886f089 Mon Sep 17 00:00:00 2001
From: Mason Reed <mason@vector35.com>
Date: Sun, 7 Dec 2025 15:03:44 -0500
Subject: [Rust] Move architecture module code into more reasonable files

To keep backwards compatibility for commonly referenced code we re-export them within the architecture module.

Also does some light refactoring of some newly added APIs to keep them more consistent with other parts of the codebase.
---
 rust/src/llvm.rs | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 97 insertions(+), 3 deletions(-)

(limited to 'rust/src/llvm.rs')

diff --git a/rust/src/llvm.rs b/rust/src/llvm.rs
index 1296db65..d2a0292a 100644
--- a/rust/src/llvm.rs
+++ b/rust/src/llvm.rs
@@ -1,8 +1,102 @@
-use binaryninjacore_sys::BNLlvmServicesDisasmInstruction;
+use binaryninjacore_sys::{
+    BNLlvmServicesAssemble, BNLlvmServicesAssembleFree, BNLlvmServicesDisasmInstruction,
+    BNLlvmServicesInit,
+};
 use std::ffi::{CStr, CString};
 use std::os::raw::{c_char, c_int};
 
-pub fn disas_instruction(triplet: &str, data: &[u8], address64: u64) -> Option<(usize, String)> {
+#[repr(i32)]
+pub enum LlvmServicesDialect {
+    Unspecified = 0,
+    Att = 1,
+    Intel = 2,
+}
+
+#[repr(i32)]
+pub enum LlvmServicesCodeModel {
+    Default = 0,
+    Small = 1,
+    Kernel = 2,
+    Medium = 3,
+    Large = 4,
+}
+
+#[repr(i32)]
+pub enum LlvmServicesRelocMode {
+    Static = 0,
+    PIC = 1,
+    DynamicNoPIC = 2,
+}
+
+pub fn llvm_assemble(
+    code: &str,
+    dialect: LlvmServicesDialect,
+    triplet: &str,
+    code_model: LlvmServicesCodeModel,
+    reloc_mode: LlvmServicesRelocMode,
+) -> Result<Vec<u8>, String> {
+    let code = CString::new(code).map_err(|_| "Invalid encoding in code string".to_string())?;
+    let arch_triple = CString::new(triplet)
+        .map_err(|_| "Invalid encoding in architecture triple string".to_string())?;
+    let mut out_bytes: *mut std::ffi::c_char = std::ptr::null_mut();
+    let mut out_bytes_len: std::ffi::c_int = 0;
+    let mut err_bytes: *mut std::ffi::c_char = std::ptr::null_mut();
+    let mut err_len: std::ffi::c_int = 0;
+
+    unsafe {
+        BNLlvmServicesInit();
+    }
+
+    let result = unsafe {
+        BNLlvmServicesAssemble(
+            code.as_ptr(),
+            dialect as i32,
+            arch_triple.as_ptr(),
+            code_model as i32,
+            reloc_mode as i32,
+            &mut out_bytes as *mut *mut std::ffi::c_char,
+            &mut out_bytes_len as *mut std::ffi::c_int,
+            &mut err_bytes as *mut *mut std::ffi::c_char,
+            &mut err_len as *mut std::ffi::c_int,
+        )
+    };
+
+    let out = if out_bytes_len == 0 {
+        Vec::new()
+    } else {
+        unsafe {
+            std::slice::from_raw_parts(
+                out_bytes as *const std::ffi::c_char as *const u8,
+                out_bytes_len as usize,
+            )
+        }
+        .to_vec()
+    };
+
+    let errors = if err_len == 0 {
+        "".into()
+    } else {
+        String::from_utf8_lossy(unsafe {
+            std::slice::from_raw_parts(
+                err_bytes as *const std::ffi::c_char as *const u8,
+                err_len as usize,
+            )
+        })
+        .into_owned()
+    };
+
+    unsafe {
+        BNLlvmServicesAssembleFree(out_bytes, err_bytes);
+    }
+
+    if result == 0 {
+        Ok(out)
+    } else {
+        Err(errors)
+    }
+}
+
+pub fn llvm_disassemble(triplet: &str, data: &[u8], address: u64) -> Option<(usize, String)> {
     unsafe {
         let triplet = CString::new(triplet).ok()?;
         let mut src = data.to_vec();
@@ -11,7 +105,7 @@ pub fn disas_instruction(triplet: &str, data: &[u8], address64: u64) -> Option<(
             triplet.as_ptr(),
             src.as_mut_ptr(),
             src.len() as c_int,
-            address64,
+            address,
             buf.as_mut_ptr() as *mut c_char,
             buf.len(),
         );
-- 
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