Add initial project files (excluding ignored content)

external/safetyhook/example/vmthook.cpp

@@ -0,0 +1,45 @@
+#include <memory>
+#include <print>
+
+#include <safetyhook.hpp>
+
+class Interface {
+public:
+    virtual ~Interface() = default;
+    virtual int add_42(int a) = 0;
+};
+
+class Target : public Interface {
+public:
+    int add_42(int a) override { return a + 42; }
+};
+
+SafetyHookVmt g_target_hook;
+SafetyHookVm g_add_42_hook;
+
+class Hook : public Target {
+public:
+    int hooked_add_42(int a) { return g_add_42_hook.thiscall<int>(this, a) + 1337; }
+};
+
+int main() {
+    auto target = std::make_unique<Target>();
+
+    std::println("unhooked target->add_42(1) = {}", target->add_42(1));
+
+    g_target_hook = safetyhook::create_vmt(target.get());
+
+#if SAFETYHOOK_OS_WINDOWS
+    g_add_42_hook = safetyhook::create_vm(g_target_hook, 1, &Hook::hooked_add_42);
+#elif SAFETYHOOK_OS_LINUX
+    g_add_42_hook = safetyhook::create_vm(g_target_hook, 2, &Hook::hooked_add_42);
+#endif
+
+    std::println("hooked target->add_42(2) = {}", target->add_42(2));
+
+    g_target_hook = {};
+
+    std::println("unhooked target->add_42(3) = {}", target->add_42(3));
+
+    return 0;
+}