expose frida-gum underlying writer object to allow users to use funct… (#198)

* expose frida-gum underlying writer object to allow users to use functions that are not exposed in * add function for writers * add and

Author: jejuisland87654

frida-gum/src/instruction_writer.rs

@@ -58,6 +58,9 @@ pub trait InstructionWriter {
  /// Add a branch to an immediate address
  fn put_branch_address(&self, address: u64) -> bool;
 
+ /// Add a nop instruction
+ fn put_nop(&self);
+
  /// Flush the writer, outputing any pending ldr-immediates
  fn flush(&self) -> bool;
 }

frida-gum/src/instruction_writer/aarch64/writer.rs

@@ -61,6 +61,10 @@ impl InstructionWriter for Aarch64InstructionWriter {
  unsafe { gum_sys::gum_arm64_writer_put_b_imm(self.writer, address) != 0 }
  }
 
+ fn put_nop(&self) {
+ unsafe { gum_sys::gum_arm64_writer_put_nop(self.writer) }
+ }
+
  fn flush(&self) -> bool {
  unsafe { gum_sys::gum_arm64_writer_flush(self.writer) != 0 }
  }
@@ -74,6 +78,11 @@ impl Aarch64InstructionWriter {
  }
  }
 
+ /// Get the underlying frida gum writer object
+ pub fn raw_writer(&self) -> *mut gum_sys::_GumArm64Writer {
+ self.writer
+ }
+
  /// Insert a `b` to a label. The label is specified by `id`.
  pub fn put_b_label(&self, id: u64) {
  unsafe { gum_sys::gum_arm64_writer_put_b_label(self.writer, id as *const c_void) }

frida-gum/src/instruction_writer/arm/writer.rs

@@ -45,6 +45,10 @@ impl InstructionWriter for ArmInstructionWriter {
  unsafe { gum_sys::gum_arm_writer_put_b_imm(self.writer, address) != 0 }
  }
 
+ fn put_nop(&self) {
+ unsafe { gum_sys::gum_arm_writer_put_nop(self.writer) }
+ }
+
  fn flush(&self) -> bool {
  unsafe { gum_sys::gum_arm_writer_flush(self.writer) != 0 }
  }
@@ -57,6 +61,11 @@ impl ArmInstructionWriter {
  is_from_new: false,
  }
  }
+
+ /// Get the underlying frida gum writer object
+ pub fn raw_writer(&self) -> *mut gum_sys::_GumArmWriter {
+ self.writer
+ }
 }
 
 impl Drop for ArmInstructionWriter {

frida-gum/src/instruction_writer/x86_64/writer.rs

@@ -58,6 +58,10 @@ impl InstructionWriter for X86InstructionWriter {
  unsafe { gum_sys::gum_x86_writer_put_jmp_address(self.writer, address) != 0 }
  }
 
+ fn put_nop(&self) {
+ unsafe { gum_sys::gum_x86_writer_put_nop(self.writer) }
+ }
+
  fn flush(&self) -> bool {
  unsafe { gum_sys::gum_x86_writer_flush(self.writer) != 0 }
  }
@@ -71,6 +75,11 @@ impl X86InstructionWriter {
  }
  }
 
+ /// Get the underlying frida gum writer object
+ pub fn raw_writer(&self) -> *mut gum_sys::_GumX86Writer {
+ self.writer
+ }
+
  pub fn put_leave(&self) -> bool {
  unsafe {
  gum_sys::gum_x86_writer_put_leave(self.writer);

frida-gum/src/stalker.rs

@@ -153,6 +153,11 @@ impl Stalker {
  }
  }
 
+ /// Get the underlying frida stalker object
+ pub fn raw_stalker(&self) -> *mut frida_gum_sys::GumStalker {
+ self.stalker
+ }
+
  /// Exclude a range of address from the Stalker engine.
  ///
  /// This exclusion will prevent the Stalker from tracing into the memory range,