aarch64: Support calloc patch blocks

Utilities/ppu_patch.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <util/types.hpp>
+#include <unordered_set>
+#include <vector>
+#include <string>
+
+// Patch utilities specific to PPU code
+struct ppu_patch_block_registry_t
+{
+    ppu_patch_block_registry_t() = default;
+    ppu_patch_block_registry_t(const ppu_patch_block_registry_t&) = delete;
+    ppu_patch_block_registry_t& operator=(const ppu_patch_block_registry_t&) = delete;
+
+    std::unordered_set<u32> block_addresses{};
+};
+
+void ppu_register_range(u32 addr, u32 size);
+bool ppu_form_branch_to_code(u32 entry, u32 target, bool link = false, bool with_toc = false, std::string module_name = {});
+u32 ppu_generate_id(std::string_view name);