libc cleanups

src/Emulator/HLE/Libraries/LibC/libc.cpp

@@ -1,9 +1,29 @@
 #include "libc.h"
 
+#include <debug.h>
+
+#include <cstdlib>
+#include <cstring>
+
 namespace Emulator::HLE::Libraries::LibC {
 
 PS4_SYSV_ABI int printf(VA_ARGS) {
     VA_CTX(ctx);
     return printf_ctx(&ctx);
 }
+
+PS4_SYSV_ABI void exit(int code) { std::exit(code); }
+
+PS4_SYSV_ABI int atexit(void (*func)()) {
+    int rt = std::atexit(func);
+    if (rt != 0) {
+        BREAKPOINT();
+    }
+    return rt;
+}
+
+int PS4_SYSV_ABI memcmp(const void* s1, const void* s2, size_t n) { return std::memcmp(s1, s2, n); }
+
+void* PS4_SYSV_ABI memcpy(void* dest, const void* src, size_t n) { return std::memcpy(dest, src, n); }
+
 };  // namespace Emulator::HLE::Libraries::LibC