[feat] inline hook relocate

01/project-hbj-hook/src/asm.rs

@@ -1,13 +1,38 @@
 
 // asm.rs
 
-use iced_x86::{code_asm::*};
+use std::error::Error;
+use iced_x86::{code_asm::*, Formatter, Instruction, NasmFormatter};
 
-pub fn assemble<F>(addr: u64, op: F) -> Result<Vec<u8>, Box<dyn std::error::Error>>
+pub fn assemble<F>(addr: u64, op: F) -> Result<Vec<u8>, Box<dyn Error>>
 where
-    F: Fn(&mut CodeAssembler) -> Result<(), Box<dyn std::error::Error>>,
+    F: Fn(&mut CodeAssembler) -> Result<(), Box<dyn Error>>,
 {
     let mut asm = CodeAssembler::new(64)?;
     _ = op(&mut asm);
     Ok(asm.assemble(addr)?)
+}
+
+pub trait InstructionFormat {
+    fn fmt_line(&self, formatter: &mut dyn Formatter) -> Result<String, Box<dyn Error>>;
+    fn fmt_line_default(&self) -> Result<String, Box<dyn Error>>;
+}
+
+impl InstructionFormat for Instruction {
+    fn fmt_line(&self, formatter: &mut dyn Formatter) -> Result<String, Box<dyn Error>> {
+        let mut asm_str = String::new();
+        formatter.format(self, &mut asm_str);
+
+        Ok(format!(
+            "{:#016x}[{:02}] {}",
+            self.ip(),
+            self.len(),
+            asm_str
+        ))
+    }
+
+    fn fmt_line_default(&self) -> Result<String, Box<dyn Error>> {
+        let mut fmt = NasmFormatter::new();
+        self.fmt_line(&mut fmt)
+    }
 }