Started asmjit wrapper for easier manipulation.

3 files changed, 63 insertions, 0 deletions

diff --git a/client/src/assembler/assembler.cpp b/client/src/assembler/assembler.cpp
new file mode 100644
index 0000000..43816fd
--- /dev/null
+++ b/client/src/assembler/assembler.cpp
@@ -0,0 +1,21 @@
+#include "../include.h"
+#include "assembler.h"
+
+void assembler::assembler::push(const std::vector<uintptr_t>& args) {
+  for (auto it = args.rbegin(); it != args.rend(); ++it) {
+    m_assembler.push(*it);
+  }
+}
+
+void assembler::assembler::end() {
+  // epilogue here
+
+  void* func;
+  m_runtime.add(&func, &m_code);
+
+  const size_t size = m_code.codeSize();
+
+  m_buf.resize(size);
+
+  std::memcpy(&m_buf[0], func, size);
+}
\ No newline at end of file
diff --git a/client/src/assembler/assembler.h b/client/src/assembler/assembler.h
new file mode 100644
index 0000000..34096a5
--- /dev/null
+++ b/client/src/assembler/assembler.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <asmjit/src/asmjit/asmjit.h>
+
+using namespace asmjit;
+
+namespace assembler {
+
+class assembler {
+  std::vector<std::byte> m_buf;
+
+  CodeHolder m_code;
+  JitRuntime m_runtime;
+  x86::Assembler m_assembler;
+
+ public:
+  assembler(const bool x64 = false) {
+    Environment env(x64 ? Environment::kArchX64 : Environment::kArchX86);
+
+    m_code.init(env);
+    m_code.attach(&m_assembler);
+  }
+  void start();
+  void push(const std::vector<uintptr_t> &args);
+  void call(const uintptr_t addr);
+  void save_ret(const uintptr_t addr);
+  void end();
+
+  auto &operator()() const { return m_buf; }
+  auto &operator->() const { return m_assembler; }
+};
+
+};  // namespace assembler
\ No newline at end of file
diff --git a/client/src/assembler/opcodes.h b/client/src/assembler/opcodes.h
new file mode 100644
index 0000000..cc21ef0
--- /dev/null
+++ b/client/src/assembler/opcodes.h
@@ -0,0 +1,9 @@
+#pragma once
+
+
+namespace assembler {
+	enum opcodes : uint8_t {
+		nop = 0x90,
+		ret = 0xc3S
+	};
+};
\ No newline at end of file