Add PoroCYon's DSP code. (#1123)

* Add PoroCYon's DSP code.

* Remove some teakra iles that we dont need.

* make some requested changes.

* move DataMemoryOffset into namespace.

* use deault param.

* ad the switch change

* <Generic> forget about the default parameter

4 files changed, 200 insertions, 0 deletions

diff --git a/src/teakra/include/teakra/disassembler.h b/src/teakra/include/teakra/disassembler.h
new file mode 100644
index 0000000..f6af37e
--- /dev/null
+++ b/src/teakra/include/teakra/disassembler.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace Teakra::Disassembler {
+
+struct ArArpSettings {
+    std::array<std::uint16_t, 2> ar;
+    std::array<std::uint16_t, 4> arp;
+};
+
+bool NeedExpansion(std::uint16_t opcode);
+bool NeedExpansion(std::uint16_t opcode);
+std::vector<std::string> GetTokenList(std::uint16_t opcode, std::uint16_t expansion = 0,
+                                      std::optional<ArArpSettings> ar_arp = std::nullopt);
+std::string Do(std::uint16_t opcode, std::uint16_t expansion = 0,
+               std::optional<ArArpSettings> ar_arp = std::nullopt);
+
+} // namespace Teakra::Disassembler
diff --git a/src/teakra/include/teakra/disassembler_c.h b/src/teakra/include/teakra/disassembler_c.h
new file mode 100644
index 0000000..8222a74
--- /dev/null
+++ b/src/teakra/include/teakra/disassembler_c.h
@@ -0,0 +1,17 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool Teakra_Disasm_NeedExpansion(uint16_t opcode);
+
+size_t Teakra_Disasm_Do(char* dst, size_t dstlen,
+	uint16_t opcode, uint16_t expansion /*= 0*/);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/src/teakra/include/teakra/teakra.h b/src/teakra/include/teakra/teakra.h
new file mode 100644
index 0000000..32b9064
--- /dev/null
+++ b/src/teakra/include/teakra/teakra.h
@@ -0,0 +1,81 @@
+#pragma once
+
+#include <array>
+#include <cstdint>
+#include <functional>
+#include <memory>
+
+namespace Teakra {
+
+struct AHBMCallback {
+    std::function<std::uint8_t(std::uint32_t address)> read8;
+    std::function<void(std::uint32_t address, std::uint8_t value)> write8;
+
+    std::function<std::uint16_t(std::uint32_t address)> read16;
+    std::function<void(std::uint32_t address, std::uint16_t value)> write16;
+
+    std::function<std::uint32_t(std::uint32_t address)> read32;
+    std::function<void(std::uint32_t address, std::uint32_t value)> write32;
+};
+
+class Teakra {
+public:
+    Teakra();
+    ~Teakra();
+
+    void Reset();
+
+    std::array<std::uint8_t, 0x80000>& GetDspMemory();
+    const std::array<std::uint8_t, 0x80000>& GetDspMemory() const;
+
+    // APBP Data
+    bool SendDataIsEmpty(std::uint8_t index) const;
+    void SendData(std::uint8_t index, std::uint16_t value);
+    bool RecvDataIsReady(std::uint8_t index) const;
+    std::uint16_t RecvData(std::uint8_t index);
+    std::uint16_t PeekRecvData(std::uint8_t index);
+    void SetRecvDataHandler(std::uint8_t index, std::function<void()> handler);
+
+    // APBP Semaphore
+    void SetSemaphore(std::uint16_t value);
+    void ClearSemaphore(std::uint16_t value);
+    void MaskSemaphore(std::uint16_t value);
+    void SetSemaphoreHandler(std::function<void()> handler);
+    std::uint16_t GetSemaphore() const;
+
+    // for implementing DSP_PDATA/PADR DMA transfers
+    std::uint16_t ProgramRead(std::uint32_t address) const;
+    void ProgramWrite(std::uint32_t address, std::uint16_t value);
+    std::uint16_t DataRead(std::uint16_t address, bool bypass_mmio = false);
+    void DataWrite(std::uint16_t address, std::uint16_t value, bool bypass_mmio = false);
+    std::uint16_t DataReadA32(std::uint32_t address) const;
+    void DataWriteA32(std::uint32_t address, std::uint16_t value);
+    std::uint16_t MMIORead(std::uint16_t address);
+    void MMIOWrite(std::uint16_t address, std::uint16_t value);
+
+    // DSP_PADR is only 16-bit, so this is where the DMA interface gets the
+    // upper 16-bits from
+    std::uint16_t DMAChan0GetSrcHigh();
+    std::uint16_t DMAChan0GetDstHigh();
+
+    std::uint16_t AHBMGetUnitSize(std::uint16_t i) const;
+    std::uint16_t AHBMGetDirection(std::uint16_t i) const;
+    std::uint16_t AHBMGetDmaChannel(std::uint16_t i) const;
+    // we need these as AHBM does some weird stuff on unaligned accesses internally
+    std::uint16_t AHBMRead16(std::uint32_t addr);
+    void AHBMWrite16(std::uint32_t addr, std::uint16_t value);
+    std::uint16_t AHBMRead32(std::uint32_t addr);
+    void AHBMWrite32(std::uint32_t addr, std::uint32_t value);
+
+    // core
+    void Run(unsigned cycle);
+
+    void SetAHBMCallback(const AHBMCallback& callback);
+
+    void SetAudioCallback(std::function<void(std::array<std::int16_t, 2>)> callback);
+
+private:
+    struct Impl;
+    std::unique_ptr<Impl> impl;
+};
+} // namespace Teakra
diff --git a/src/teakra/include/teakra/teakra_c.h b/src/teakra/include/teakra/teakra_c.h
new file mode 100644
index 0000000..d52a9f1
--- /dev/null
+++ b/src/teakra/include/teakra/teakra_c.h
@@ -0,0 +1,79 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct TeakraObject;
+typedef struct TeakraObject TeakraContext;
+
+typedef void (*Teakra_InterruptCallback)(void* userdata);
+typedef void (*Teakra_AudioCallback)(void* userdata, int16_t samples[2]);
+
+typedef uint8_t (*Teakra_AHBMReadCallback8)(void* userdata, uint32_t address);
+typedef void (*Teakra_AHBMWriteCallback8)(void* userdata, uint32_t address, uint8_t value);
+
+typedef uint16_t (*Teakra_AHBMReadCallback16)(void* userdata, uint32_t address);
+typedef void (*Teakra_AHBMWriteCallback16)(void* userdata, uint32_t address, uint16_t value);
+
+typedef uint32_t (*Teakra_AHBMReadCallback32)(void* userdata, uint32_t address);
+typedef void (*Teakra_AHBMWriteCallback32)(void* userdata, uint32_t address, uint32_t value);
+
+TeakraContext* Teakra_Create();
+void Teakra_Destroy(TeakraContext* context);
+void Teakra_Reset(TeakraContext* context);
+uint8_t* Teakra_GetDspMemory(TeakraContext* context);
+
+int Teakra_SendDataIsEmpty(const TeakraContext* context, uint8_t index);
+void Teakra_SendData(TeakraContext* context, uint8_t index, uint16_t value);
+int Teakra_RecvDataIsReady(const TeakraContext* context, uint8_t index);
+uint16_t Teakra_RecvData(TeakraContext* context, uint8_t index);
+uint16_t Teakra_PeekRecvData(TeakraContext* context, uint8_t index);
+void Teakra_SetRecvDataHandler(TeakraContext* context, uint8_t index,
+                               Teakra_InterruptCallback handler, void* userdata);
+
+void Teakra_SetSemaphore(TeakraContext* context, uint16_t value);
+void Teakra_ClearSemaphore(TeakraContext* context, uint16_t value);
+void Teakra_MaskSemaphore(TeakraContext* context, uint16_t value);
+void Teakra_SetSemaphoreHandler(TeakraContext* context, Teakra_InterruptCallback handler,
+                                void* userdata);
+uint16_t Teakra_GetSemaphore(const TeakraContext* context);
+
+uint16_t Teakra_ProgramRead(TeakraContext* context, uint32_t address);
+void Teakra_ProgramWrite(TeakraContext* context, uint32_t address, uint16_t value);
+uint16_t Teakra_DataRead(TeakraContext* context, uint16_t address, bool bypass_mmio);
+void Teakra_DataWrite(TeakraContext* context, uint16_t address, uint16_t value, bool bypass_mmio);
+uint16_t Teakra_DataReadA32(TeakraContext* context, uint32_t address);
+void Teakra_DataWriteA32(TeakraContext* context, uint32_t address, uint16_t value);
+uint16_t Teakra_MMIORead(TeakraContext* context, uint16_t address);
+void Teakra_MMIOWrite(TeakraContext* context, uint16_t address, uint16_t value);
+
+uint16_t Teakra_DMAChan0GetSrcHigh(TeakraContext* context);
+uint16_t Teakra_DMAChan0GetDstHigh(TeakraContext* context);
+
+uint16_t Teakra_AHBMGetUnitSize(TeakraContext* context, uint16_t i);
+uint16_t Teakra_AHBMGetDirection(TeakraContext* context, uint16_t i);
+uint16_t Teakra_AHBMGetDmaChannel(TeakraContext* context, uint16_t i);
+
+uint16_t Teakra_AHBMRead16(TeakraContext* context, uint32_t addr);
+void Teakra_AHBMWrite16(TeakraContext* context, uint32_t addr, uint16_t value);
+uint16_t Teakra_AHBMRead32(TeakraContext* context, uint32_t addr);
+void Teakra_AHBMWrite32(TeakraContext* context, uint32_t addr, uint32_t value);
+
+
+void Teakra_Run(TeakraContext* context, unsigned cycle);
+
+void Teakra_SetAHBMCallback(TeakraContext* context,
+                            Teakra_AHBMReadCallback8  read8 , Teakra_AHBMWriteCallback8  write8 ,
+                            Teakra_AHBMReadCallback16 read16, Teakra_AHBMWriteCallback16 write16,
+                            Teakra_AHBMReadCallback32 read32, Teakra_AHBMWriteCallback32 write32,
+                            void* userdata);
+
+
+void Teakra_SetAudioCallback(TeakraContext* context, Teakra_AudioCallback callback, void* userdata);
+#ifdef __cplusplus
+}
+#endif