1 files changed, 84 insertions, 0 deletions
diff --git a/src/tests/core/arm/arm_test_common.h b/src/tests/core/arm/arm_test_common.h
new file mode 100644
index 000000000..592c28594
--- /dev/null
+++ b/src/tests/core/arm/arm_test_common.h
@@ -0,0 +1,84 @@
+// Copyright 2016 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <tuple>
+#include <unordered_map>
+#include <vector>
+
+#include "common/common_types.h"
+#include "core/mmio.h"
+
+namespace ArmTests {
+
+struct WriteRecord {
+    WriteRecord(size_t size, VAddr addr, u64 data) : size(size), addr(addr), data(data) {}
+    size_t size;
+    VAddr addr;
+    u64 data;
+    bool operator==(const WriteRecord& o) const {
+        return std::tie(size, addr, data) == std::tie(o.size, o.addr, o.data);
+    }
+};
+
+class TestEnvironment final {
+public:
+    /*
+     * Inititalise test environment
+     * @param mutable_memory If false, writes to memory can never be read back.
+     *                       (Memory is immutable.)
+     */
+    explicit TestEnvironment(bool mutable_memory = false);
+
+    /// Shutdown test environment
+    ~TestEnvironment();
+
+    /// Sets value at memory location vaddr.
+    void SetMemory8(VAddr vaddr, u8 value);
+    void SetMemory16(VAddr vaddr, u16 value);
+    void SetMemory32(VAddr vaddr, u32 value);
+    void SetMemory64(VAddr vaddr, u64 value);
+
+    /**
+     * Whenever Memory::Write{8,16,32,64} is called within the test environment,
+     * a new write-record is made.
+     * @returns A vector of write records made since they were last cleared.
+     */
+    std::vector<WriteRecord> GetWriteRecords() const;
+
+    /// Empties the internal write-record store.
+    void ClearWriteRecords();
+
+private:
+    friend struct TestMemory;
+    struct TestMemory final : Memory::MMIORegion {
+        explicit TestMemory(TestEnvironment* env_) : env(env_) {}
+        TestEnvironment* env;
+
+        ~TestMemory() override;
+
+        bool IsValidAddress(VAddr addr) override;
+
+        u8 Read8(VAddr addr) override;
+        u16 Read16(VAddr addr) override;
+        u32 Read32(VAddr addr) override;
+        u64 Read64(VAddr addr) override;
+
+        bool ReadBlock(VAddr src_addr, void* dest_buffer, size_t size) override;
+
+        void Write8(VAddr addr, u8 data) override;
+        void Write16(VAddr addr, u16 data) override;
+        void Write32(VAddr addr, u32 data) override;
+        void Write64(VAddr addr, u64 data) override;
+
+        bool WriteBlock(VAddr dest_addr, const void* src_buffer, size_t size) override;
+
+        std::unordered_map<VAddr, u8> data;
+    };
+
+    bool mutable_memory;
+    std::shared_ptr<TestMemory> test_memory;
+    std::vector<WriteRecord> write_records;
+};
+
+} // namespace ArmTests