1 files changed, 201 insertions, 0 deletions
diff --git a/externals/dynarmic/tests/A32/testenv.h b/externals/dynarmic/tests/A32/testenv.h
new file mode 100644
index 0000000000..4345663b34
--- /dev/null
+++ b/externals/dynarmic/tests/A32/testenv.h
@@ -0,0 +1,201 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2018 MerryMage
+ * SPDX-License-Identifier: 0BSD
+ */
+
+#pragma once
+
+#include <array>
+#include <cstring>
+#include <map>
+#include <string>
+#include <vector>
+
+#include <mcl/assert.hpp>
+#include <mcl/stdint.hpp>
+
+#include "dynarmic/interface/A32/a32.h"
+
+template<typename InstructionType_, u32 infinite_loop_u32>
+class A32TestEnv : public Dynarmic::A32::UserCallbacks {
+public:
+    using InstructionType = InstructionType_;
+    using RegisterArray = std::array<u32, 16>;
+    using ExtRegsArray = std::array<u32, 64>;
+
+#ifdef _MSC_VER
+#    pragma warning(push)
+#    pragma warning(disable : 4309)  // C4309: 'static_cast': truncation of constant value
+#endif
+    static constexpr InstructionType infinite_loop = static_cast<InstructionType>(infinite_loop_u32);
+#ifdef _MSC_VER
+#    pragma warning(pop)
+#endif
+
+    u64 ticks_left = 0;
+    bool code_mem_modified_by_guest = false;
+    std::vector<InstructionType> code_mem;
+    std::map<u32, u8> modified_memory;
+    std::vector<std::string> interrupts;
+
+    void PadCodeMem() {
+        do {
+            code_mem.push_back(infinite_loop);
+        } while (code_mem.size() % 2 != 0);
+    }
+
+    bool IsInCodeMem(u32 vaddr) const {
+        return vaddr < sizeof(InstructionType) * code_mem.size();
+    }
+
+    std::optional<std::uint32_t> MemoryReadCode(u32 vaddr) override {
+        if (IsInCodeMem(vaddr)) {
+            u32 value;
+            std::memcpy(&value, &code_mem[vaddr / sizeof(InstructionType)], sizeof(u32));
+            return value;
+        }
+        return infinite_loop_u32;  // B .
+    }
+
+    std::uint8_t MemoryRead8(u32 vaddr) override {
+        if (IsInCodeMem(vaddr)) {
+            return reinterpret_cast<u8*>(code_mem.data())[vaddr];
+        }
+        if (auto iter = modified_memory.find(vaddr); iter != modified_memory.end()) {
+            return iter->second;
+        }
+        return static_cast<u8>(vaddr);
+    }
+    std::uint16_t MemoryRead16(u32 vaddr) override {
+        return u16(MemoryRead8(vaddr)) | u16(MemoryRead8(vaddr + 1)) << 8;
+    }
+    std::uint32_t MemoryRead32(u32 vaddr) override {
+        return u32(MemoryRead16(vaddr)) | u32(MemoryRead16(vaddr + 2)) << 16;
+    }
+    std::uint64_t MemoryRead64(u32 vaddr) override {
+        return u64(MemoryRead32(vaddr)) | u64(MemoryRead32(vaddr + 4)) << 32;
+    }
+
+    void MemoryWrite8(u32 vaddr, std::uint8_t value) override {
+        if (vaddr < code_mem.size() * sizeof(u32)) {
+            code_mem_modified_by_guest = true;
+        }
+        modified_memory[vaddr] = value;
+    }
+    void MemoryWrite16(u32 vaddr, std::uint16_t value) override {
+        MemoryWrite8(vaddr, static_cast<u8>(value));
+        MemoryWrite8(vaddr + 1, static_cast<u8>(value >> 8));
+    }
+    void MemoryWrite32(u32 vaddr, std::uint32_t value) override {
+        MemoryWrite16(vaddr, static_cast<u16>(value));
+        MemoryWrite16(vaddr + 2, static_cast<u16>(value >> 16));
+    }
+    void MemoryWrite64(u32 vaddr, std::uint64_t value) override {
+        MemoryWrite32(vaddr, static_cast<u32>(value));
+        MemoryWrite32(vaddr + 4, static_cast<u32>(value >> 32));
+    }
+
+    void InterpreterFallback(u32 pc, size_t num_instructions) override { ASSERT_MSG(false, "InterpreterFallback({:08x}, {}) code = {:08x}", pc, num_instructions, *MemoryReadCode(pc)); }
+
+    void CallSVC(std::uint32_t swi) override { ASSERT_MSG(false, "CallSVC({})", swi); }
+
+    void ExceptionRaised(u32 pc, Dynarmic::A32::Exception /*exception*/) override { ASSERT_MSG(false, "ExceptionRaised({:08x}) code = {:08x}", pc, *MemoryReadCode(pc)); }
+
+    void AddTicks(std::uint64_t ticks) override {
+        if (ticks > ticks_left) {
+            ticks_left = 0;
+            return;
+        }
+        ticks_left -= ticks;
+    }
+    std::uint64_t GetTicksRemaining() override {
+        return ticks_left;
+    }
+};
+
+using ArmTestEnv = A32TestEnv<u32, 0xEAFFFFFE>;
+using ThumbTestEnv = A32TestEnv<u16, 0xE7FEE7FE>;
+
+class A32FastmemTestEnv final : public Dynarmic::A32::UserCallbacks {
+public:
+    u64 ticks_left = 0;
+    char* backing_memory = nullptr;
+
+    explicit A32FastmemTestEnv(char* addr)
+            : backing_memory(addr) {}
+
+    template<typename T>
+    T read(std::uint32_t vaddr) {
+        T value;
+        memcpy(&value, backing_memory + vaddr, sizeof(T));
+        return value;
+    }
+    template<typename T>
+    void write(std::uint32_t vaddr, const T& value) {
+        memcpy(backing_memory + vaddr, &value, sizeof(T));
+    }
+
+    std::optional<std::uint32_t> MemoryReadCode(std::uint32_t vaddr) override {
+        return read<std::uint32_t>(vaddr);
+    }
+
+    std::uint8_t MemoryRead8(std::uint32_t vaddr) override {
+        return read<std::uint8_t>(vaddr);
+    }
+    std::uint16_t MemoryRead16(std::uint32_t vaddr) override {
+        return read<std::uint16_t>(vaddr);
+    }
+    std::uint32_t MemoryRead32(std::uint32_t vaddr) override {
+        return read<std::uint32_t>(vaddr);
+    }
+    std::uint64_t MemoryRead64(std::uint32_t vaddr) override {
+        return read<std::uint64_t>(vaddr);
+    }
+
+    void MemoryWrite8(std::uint32_t vaddr, std::uint8_t value) override {
+        write(vaddr, value);
+    }
+    void MemoryWrite16(std::uint32_t vaddr, std::uint16_t value) override {
+        write(vaddr, value);
+    }
+    void MemoryWrite32(std::uint32_t vaddr, std::uint32_t value) override {
+        write(vaddr, value);
+    }
+    void MemoryWrite64(std::uint32_t vaddr, std::uint64_t value) override {
+        write(vaddr, value);
+    }
+
+    bool MemoryWriteExclusive8(std::uint32_t vaddr, std::uint8_t value, [[maybe_unused]] std::uint8_t expected) override {
+        MemoryWrite8(vaddr, value);
+        return true;
+    }
+    bool MemoryWriteExclusive16(std::uint32_t vaddr, std::uint16_t value, [[maybe_unused]] std::uint16_t expected) override {
+        MemoryWrite16(vaddr, value);
+        return true;
+    }
+    bool MemoryWriteExclusive32(std::uint32_t vaddr, std::uint32_t value, [[maybe_unused]] std::uint32_t expected) override {
+        MemoryWrite32(vaddr, value);
+        return true;
+    }
+    bool MemoryWriteExclusive64(std::uint32_t vaddr, std::uint64_t value, [[maybe_unused]] std::uint64_t expected) override {
+        MemoryWrite64(vaddr, value);
+        return true;
+    }
+
+    void InterpreterFallback(std::uint32_t pc, size_t num_instructions) override { ASSERT_MSG(false, "InterpreterFallback({:016x}, {})", pc, num_instructions); }
+
+    void CallSVC(std::uint32_t swi) override { ASSERT_MSG(false, "CallSVC({})", swi); }
+
+    void ExceptionRaised(std::uint32_t pc, Dynarmic::A32::Exception) override { ASSERT_MSG(false, "ExceptionRaised({:016x})", pc); }
+
+    void AddTicks(std::uint64_t ticks) override {
+        if (ticks > ticks_left) {
+            ticks_left = 0;
+            return;
+        }
+        ticks_left -= ticks;
+    }
+    std::uint64_t GetTicksRemaining() override {
+        return ticks_left;
+    }
+};