From acc6afca786ea60d3a0696fa3e3f39ad6094a65d Mon Sep 17 00:00:00 2001 From: Ran-j Date: Tue, 15 Apr 2025 11:30:21 -0300 Subject: [PATCH] feat: added PS2 stubs and change runtime a bit --- ps2xRuntime/include/ps2_runtime.h | 33 +- ps2xRuntime/include/ps2_stubs.h | 104 +++++ ps2xRuntime/src/ps2_memory.cpp | 221 ++++++++++- ps2xRuntime/src/ps2_stubs.cpp | 616 ++++++++++++++++++++++++++++++ 4 files changed, 960 insertions(+), 14 deletions(-) create mode 100644 ps2xRuntime/include/ps2_stubs.h create mode 100644 ps2xRuntime/src/ps2_stubs.cpp diff --git a/ps2xRuntime/include/ps2_runtime.h b/ps2xRuntime/include/ps2_runtime.h index 13e924b..a7971eb 100644 --- a/ps2xRuntime/include/ps2_runtime.h +++ b/ps2xRuntime/include/ps2_runtime.h @@ -8,6 +8,9 @@ #include #include // For SSE/AVX instructions +#define PS2_RAM_SIZE 0x2000000 // 32MB +#define PS2_SCRATCHPAD_SIZE 0x4000 // 16KB + // PS2 CPU context (R5900) struct R5900Context { @@ -112,6 +115,13 @@ struct DMARegisters uint32_t sadr; // Source address }; +struct JumpTable +{ + uint32_t address; // Base address of the jump table + uint32_t baseRegister; // Register used for index + std::vector targets; // Jump targets +}; + class PS2Memory { public: @@ -119,7 +129,7 @@ public: ~PS2Memory(); // Initialize memory - bool initialize(size_t ramSize = 32 * 1024 * 1024); + bool initialize(size_t ramSize = PS2_RAM_SIZE); // Memory access methods uint8_t *getRDRAM() { return m_rdram; } @@ -142,6 +152,15 @@ public: // TLB handling uint32_t translateAddress(uint32_t virtualAddress); + // Hardware register interface + bool writeIORegister(uint32_t address, uint32_t value); + uint32_t readIORegister(uint32_t address); + + // Track code modifications for self-modifying code + void registerCodeRegion(uint32_t start, uint32_t end); + bool isCodeModified(uint32_t address, uint32_t size); + void clearModifiedFlag(uint32_t address, uint32_t size); + private: // Main RAM (32MB) uint8_t *m_rdram; @@ -156,7 +175,6 @@ private: std::unordered_map m_ioRegisters; // Registers - EECoreRegisters ee_regs; GSRegisters gs_regs; VIFRegisters vif0_regs; VIFRegisters vif1_regs; @@ -172,6 +190,17 @@ private: }; std::vector m_tlbEntries; + + struct CodeRegion + { + uint32_t start; + uint32_t end; + std::vector modified; // Bitmap of modified 4-byte blocks + }; + std::vector m_codeRegions; + + bool isAddressInRegion(uint32_t address, const CodeRegion ®ion); + void markModified(uint32_t address, uint32_t size); }; class PS2Runtime diff --git a/ps2xRuntime/include/ps2_stubs.h b/ps2xRuntime/include/ps2_stubs.h new file mode 100644 index 0000000..633a367 --- /dev/null +++ b/ps2xRuntime/include/ps2_stubs.h @@ -0,0 +1,104 @@ +#ifndef PS2_STUBS_H +#define PS2_STUBS_H + +#include "ps2_runtime.h" + +// Standard library implementation stubs +namespace ps2_stubs +{ + // Memory operations + void memcpy(uint8_t *rdram, R5900Context *ctx); + void memset(uint8_t *rdram, R5900Context *ctx); + void memmove(uint8_t *rdram, R5900Context *ctx); + void memcmp(uint8_t *rdram, R5900Context *ctx); + + // String operations + void strcpy(uint8_t *rdram, R5900Context *ctx); + void strncpy(uint8_t *rdram, R5900Context *ctx); + void strlen(uint8_t *rdram, R5900Context *ctx); + void strcmp(uint8_t *rdram, R5900Context *ctx); + void strncmp(uint8_t *rdram, R5900Context *ctx); + + // I/O operations + void printf(uint8_t *rdram, R5900Context *ctx); + void sprintf(uint8_t *rdram, R5900Context *ctx); + void puts(uint8_t *rdram, R5900Context *ctx); + + // Memory allocation + void malloc(uint8_t *rdram, R5900Context *ctx); + void free(uint8_t *rdram, R5900Context *ctx); + void calloc(uint8_t *rdram, R5900Context *ctx); + void realloc(uint8_t *rdram, R5900Context *ctx); + + // Math functions + void sqrt(uint8_t *rdram, R5900Context *ctx); + void sin(uint8_t *rdram, R5900Context *ctx); + void cos(uint8_t *rdram, R5900Context *ctx); + void atan2(uint8_t *rdram, R5900Context *ctx); +} + +// PS2 system call implementation stubs +namespace ps2_syscalls +{ + void FlushCache(uint8_t *rdram, R5900Context *ctx); + void ExitThread(uint8_t *rdram, R5900Context *ctx); + void SleepThread(uint8_t *rdram, R5900Context *ctx); + void CreateThread(uint8_t *rdram, R5900Context *ctx); + void StartThread(uint8_t *rdram, R5900Context *ctx); + void SifInitRpc(uint8_t *rdram, R5900Context *ctx); + void SifBindRpc(uint8_t *rdram, R5900Context *ctx); + void SifCallRpc(uint8_t *rdram, R5900Context *ctx); + void SetGsCrt(uint8_t *rdram, R5900Context *ctx); +} + +// MMI operation implementations +namespace ps2_mmi +{ + void PADDW(R5900Context *ctx, int rd, int rs, int rt); + void PSUBW(R5900Context *ctx, int rd, int rs, int rt); + void PCGTW(R5900Context *ctx, int rd, int rs, int rt); + void PMAXW(R5900Context *ctx, int rd, int rs, int rt); + void PADDH(R5900Context *ctx, int rd, int rs, int rt); + void PSUBH(R5900Context *ctx, int rd, int rs, int rt); + void PCGTH(R5900Context *ctx, int rd, int rs, int rt); + void PMAXH(R5900Context *ctx, int rd, int rs, int rt); + void PADDB(R5900Context *ctx, int rd, int rs, int rt); + void PSUBB(R5900Context *ctx, int rd, int rs, int rt); + void PCGTB(R5900Context *ctx, int rd, int rs, int rt); + + void PEXTLW(R5900Context *ctx, int rd, int rs, int rt); + void PEXTUW(R5900Context *ctx, int rd, int rs, int rt); + void PEXTLH(R5900Context *ctx, int rd, int rs, int rt); + void PEXTUH(R5900Context *ctx, int rd, int rs, int rt); + void PEXTLB(R5900Context *ctx, int rd, int rs, int rt); + void PEXTUB(R5900Context *ctx, int rd, int rs, int rt); + + void PMADDW(R5900Context *ctx, int rd, int rs, int rt); + void PMSUBW(R5900Context *ctx, int rd, int rs, int rt); + void PMADDH(R5900Context *ctx, int rd, int rs, int rt); + void PMSUBH(R5900Context *ctx, int rd, int rs, int rt); + + void PAND(R5900Context *ctx, int rd, int rs, int rt); + void POR(R5900Context *ctx, int rd, int rs, int rt); + void PXOR(R5900Context *ctx, int rd, int rs, int rt); + void PNOR(R5900Context *ctx, int rd, int rs, int rt); +} + +// Hardware register handlers +namespace ps2_hardware +{ + // DMA channel handlers + void handleDmacReg(uint32_t address, uint32_t value); + + // GS register handlers + void handleGsReg(uint32_t address, uint32_t value); + + // VIF register handlers + void handleVif0Reg(uint32_t address, uint32_t value); + void handleVif1Reg(uint32_t address, uint32_t value); + + void handleTimerReg(uint32_t address, uint32_t value); + void handleSPU2Reg(uint32_t address, uint32_t value); +} + +#endif // PS2_RUNTIME_H \ No newline at end of file diff --git a/ps2xRuntime/src/ps2_memory.cpp b/ps2xRuntime/src/ps2_memory.cpp index 0ec0a33..d7bd40d 100644 --- a/ps2xRuntime/src/ps2_memory.cpp +++ b/ps2xRuntime/src/ps2_memory.cpp @@ -258,7 +258,7 @@ __m128i PS2Memory::read128(uint32_t address) // Return zeroes for unsupported areas return _mm_setzero_si128(); } - + void PS2Memory::write8(uint32_t address, uint8_t value) { uint32_t physAddr = translateAddress(address); @@ -280,7 +280,7 @@ void PS2Memory::write8(uint32_t address, uint8_t value) uint32_t newValue = (m_ioRegisters[regAddr] & mask) | ((uint32_t)value << shift); m_ioRegisters[regAddr] = newValue; - // Handle potential side effects of IO register writes + // Handle potential side effects of IO register writes } } @@ -327,20 +327,19 @@ void PS2Memory::write32(uint32_t address, uint32_t value) if (physAddr < PS2_RAM_SIZE) { + // Check if this might be code modification + markModified(address, 4); + *reinterpret_cast(&m_rdram[physAddr]) = value; } - else if (physAddr >= PS2_SCRATCHPAD_BASE && physAddr < PS2_SCRATCHPAD_BASE + PS2_SCRATCHPAD_SIZE) - { - *reinterpret_cast(&m_scratchpad[physAddr - PS2_SCRATCHPAD_BASE]) = value; + else if (physAddr >= 0x70000000 && physAddr < 0x70004000) + { // Scratchpad + *reinterpret_cast(&m_scratchpad[physAddr - 0x70000000]) = value; } - else if (physAddr >= PS2_IO_BASE && physAddr < PS2_IO_BASE + PS2_IO_SIZE) + else if (physAddr >= 0x10000000 && physAddr < 0x10010000) { - // IO registers - m_ioRegisters[physAddr] = value; - - // Handle potential side effects of IO register writes - // This would be where we handle the various hardware effects - // For example, writing to a DMA control register might trigger a transfer + // Handle IO register writes with potential side effects + writeIORegister(physAddr, value); } } @@ -398,4 +397,202 @@ void PS2Memory::write128(uint32_t address, __m128i value) write64(address, lo); write64(address + 8, hi); } +} + +bool PS2Memory::writeIORegister(uint32_t address, uint32_t value) +{ + m_ioRegisters[address] = value; + + // Now check if this is a special hardware register + if (address >= 0x10000000 && address < 0x10010000) + { + // Timer/counter registers + if (address >= 0x10000000 && address < 0x10000100) + { + std::cout << "Timer register write: " << std::hex << address << " = " << value << std::dec << std::endl; + return true; + } + + // DMA registers + if (address >= 0x10008000 && address < 0x1000F000) + { + std::cout << "DMA register write: " << std::hex << address << " = " << value << std::dec << std::endl; + + // Check if we need to start a DMA transfer + if ((address & 0xFF) == 0x00) + { // CHCR registers + if (value & 0x100) + { + uint32_t channelBase = address & 0xFFFFFF00; + uint32_t madr = m_ioRegisters[channelBase + 0x10]; // Memory address + uint32_t qwc = m_ioRegisters[channelBase + 0x20]; // Quadword count + + std::cout << "Starting DMA transfer on channel " << ((address >> 8) & 0xF) + << ", MADR: " << std::hex << madr + << ", QWC: " << qwc << std::dec << std::endl; + + // Would actually start DMA here + } + } + return true; + } + + // Interrupt control registers + if (address >= 0x10000200 && address < 0x10000300) + { + std::cout << "Interrupt register write: " << std::hex << address << " = " << value << std::dec << std::endl; + // Handle interrupt register side effects + return true; + } + } + else if (address >= 0x12000000 && address < 0x12001000) + { + // GS registers + std::cout << "GS register write: " << std::hex << address << " = " << value << std::dec << std::endl; + // Handle GS register side effects + return true; + } + + return false; +} + +uint32_t PS2Memory::readIORegister(uint32_t address) +{ + auto it = m_ioRegisters.find(address); + if (it != m_ioRegisters.end()) + { + return it->second; + } + + // Special cases for reads from hardware registers that have side effects + if (address >= 0x10000000 && address < 0x10010000) + { + // Timer registers + if (address >= 0x10000000 && address < 0x10000100) + { + if ((address & 0xF) == 0x00) + { // COUNT registers + uint32_t timerCount = 0; // Should calculate based on elapsed time + std::cout << "Timer COUNT read: " << std::hex << address << " = " << timerCount << std::dec << std::endl; + return timerCount; + } + } + + // DMA status registers + if (address >= 0x10008000 && address < 0x1000F000) + { + if ((address & 0xFF) == 0x00) + { // CHCR registers + uint32_t channelStatus = m_ioRegisters[address] & ~0x100; // Clear busy bit + std::cout << "DMA status read: " << std::hex << address << " = " << channelStatus << std::dec << std::endl; + return channelStatus; + } + } + + // Interrupt status registers + if (address >= 0x10000200 && address < 0x10000300) + { + std::cout << "Interrupt status read: " << std::hex << address << std::dec << std::endl; + // Should calculate based on pending interrupts + return 0; + } + } + + return 0; +} + +void PS2Memory::registerCodeRegion(uint32_t start, uint32_t end) +{ + CodeRegion region; + region.start = start; + region.end = end; + + // Initialize the modified bitmap (one bit per 4-byte word) + size_t sizeInWords = (end - start) / 4; + region.modified.resize(sizeInWords, false); + + m_codeRegions.push_back(region); + std::cout << "Registered code region: " << std::hex << start << " - " << end << std::dec << std::endl; +} + +bool PS2Memory::isAddressInRegion(uint32_t address, const CodeRegion ®ion) +{ + return (address >= region.start && address < region.end); +} + +void PS2Memory::markModified(uint32_t address, uint32_t size) +{ + for (auto ®ion : m_codeRegions) + { + if (address + size <= region.start || address >= region.end) + { + continue; + } + + uint32_t overlapStart = std::max(address, region.start); + uint32_t overlapEnd = std::min(address + size, region.end); + + // Mark each 4-byte word in the overlap as modified + for (uint32_t addr = overlapStart; addr < overlapEnd; addr += 4) + { + size_t bitIndex = (addr - region.start) / 4; + if (bitIndex < region.modified.size()) + { + region.modified[bitIndex] = true; + std::cout << "Marked code at " << std::hex << addr << std::dec << " as modified" << std::endl; + } + } + } +} + +bool PS2Memory::isCodeModified(uint32_t address, uint32_t size) +{ + for (const auto ®ion : m_codeRegions) + { + if (address + size <= region.start || address >= region.end) + { + continue; + } + + // Calculate overlap + uint32_t overlapStart = std::max(address, region.start); + uint32_t overlapEnd = std::min(address + size, region.end); + + // Check each 4-byte word in the overlap + for (uint32_t addr = overlapStart; addr < overlapEnd; addr += 4) + { + size_t bitIndex = (addr - region.start) / 4; + if (bitIndex < region.modified.size() && region.modified[bitIndex]) + { + return true; // Found modified code + } + } + } + + return false; // No modifications found +} + +void PS2Memory::clearModifiedFlag(uint32_t address, uint32_t size) +{ + for (auto ®ion : m_codeRegions) + { + if (address + size <= region.start || address >= region.end) + { + continue; + } + + // Calculate overlap + uint32_t overlapStart = std::max(address, region.start); + uint32_t overlapEnd = std::min(address + size, region.end); + + // Clear flags for each 4-byte word in the overlap + for (uint32_t addr = overlapStart; addr < overlapEnd; addr += 4) + { + size_t bitIndex = (addr - region.start) / 4; + if (bitIndex < region.modified.size()) + { + region.modified[bitIndex] = false; + } + } + } } \ No newline at end of file diff --git a/ps2xRuntime/src/ps2_stubs.cpp b/ps2xRuntime/src/ps2_stubs.cpp new file mode 100644 index 0000000..5ddac19 --- /dev/null +++ b/ps2xRuntime/src/ps2_stubs.cpp @@ -0,0 +1,616 @@ + +#include "ps2_stubs.h" + + +// Stub implementations for standard library functions +namespace ps2_stubs +{ + // Memory operations + void memcpy(uint8_t *rdram, R5900Context *ctx) + { + uint32_t dst = ctx->r[4].m128i_u32[0]; // a0 = destination + uint32_t src = ctx->r[5].m128i_u32[0]; // a1 = source + uint32_t size = ctx->r[6].m128i_u32[0]; // a2 = size + + uint32_t physDst = dst & 0x1FFFFFFF; + uint32_t physSrc = src & 0x1FFFFFFF; + + std::memcpy(rdram + physDst, rdram + physSrc, size); + + ctx->r[2] = _mm_set1_epi32(dst); + } + + void memset(uint8_t *rdram, R5900Context *ctx) + { + uint32_t dst = ctx->r[4].m128i_u32[0]; // a0 = destination + uint32_t value = ctx->r[5].m128i_u32[0] & 0xFF; // a1 = fill value (byte) + uint32_t size = ctx->r[6].m128i_u32[0]; // a2 = size + + uint32_t physDst = dst & 0x1FFFFFFF; + + std::memset(rdram + physDst, value, size); + + ctx->r[2] = _mm_set1_epi32(dst); + } + + void memmove(uint8_t *rdram, R5900Context *ctx) + { + uint32_t dst = ctx->r[4].m128i_u32[0]; // a0 = destination + uint32_t src = ctx->r[5].m128i_u32[0]; // a1 = source + uint32_t size = ctx->r[6].m128i_u32[0]; // a2 = size + + uint32_t physDst = dst & 0x1FFFFFFF; + uint32_t physSrc = src & 0x1FFFFFFF; + + std::memmove(rdram + physDst, rdram + physSrc, size); + + ctx->r[2] = _mm_set1_epi32(dst); + } + + void memcmp(uint8_t *rdram, R5900Context *ctx) + { + uint32_t ptr1 = ctx->r[4].m128i_u32[0]; // a0 = first buffer + uint32_t ptr2 = ctx->r[5].m128i_u32[0]; // a1 = second buffer + uint32_t size = ctx->r[6].m128i_u32[0]; // a2 = size + + uint32_t phys1 = ptr1 & 0x1FFFFFFF; + uint32_t phys2 = ptr2 & 0x1FFFFFFF; + + int result = std::memcmp(rdram + phys1, rdram + phys2, size); + + ctx->r[2] = _mm_set1_epi32(result); + } + + // String operations + void strcpy(uint8_t *rdram, R5900Context *ctx) + { + uint32_t dst = ctx->r[4].m128i_u32[0]; // a0 = destination + uint32_t src = ctx->r[5].m128i_u32[0]; // a1 = source + + uint32_t physDst = dst & 0x1FFFFFFF; + uint32_t physSrc = src & 0x1FFFFFFF; + + char *destStr = reinterpret_cast(rdram + physDst); + const char *srcStr = reinterpret_cast(rdram + physSrc); + + std::strcpy(destStr, srcStr); + + ctx->r[2] = _mm_set1_epi32(dst); + } + + void strncpy(uint8_t *rdram, R5900Context *ctx) + { + uint32_t dst = ctx->r[4].m128i_u32[0]; // a0 = destination + uint32_t src = ctx->r[5].m128i_u32[0]; // a1 = source + uint32_t n = ctx->r[6].m128i_u32[0]; // a2 = max length + + uint32_t physDst = dst & 0x1FFFFFFF; + uint32_t physSrc = src & 0x1FFFFFFF; + + char *destStr = reinterpret_cast(rdram + physDst); + const char *srcStr = reinterpret_cast(rdram + physSrc); + + std::strncpy(destStr, srcStr, n); + + ctx->r[2] = _mm_set1_epi32(dst); + } + + void strlen(uint8_t *rdram, R5900Context *ctx) + { + uint32_t str = ctx->r[4].m128i_u32[0]; // a0 = string + + uint32_t physStr = str & 0x1FFFFFFF; + const char *strPtr = reinterpret_cast(rdram + physStr); + + size_t length = std::strlen(strPtr); + + ctx->r[2] = _mm_set1_epi32(static_cast(length)); + } + + void strcmp(uint8_t *rdram, R5900Context *ctx) + { + uint32_t str1 = ctx->r[4].m128i_u32[0]; // a0 = first string + uint32_t str2 = ctx->r[5].m128i_u32[0]; // a1 = second string + + uint32_t phys1 = str1 & 0x1FFFFFFF; + uint32_t phys2 = str2 & 0x1FFFFFFF; + + const char *str1Ptr = reinterpret_cast(rdram + phys1); + const char *str2Ptr = reinterpret_cast(rdram + phys2); + + int result = std::strcmp(str1Ptr, str2Ptr); + + ctx->r[2] = _mm_set1_epi32(result); + } + + void strncmp(uint8_t *rdram, R5900Context *ctx) + { + uint32_t str1 = ctx->r[4].m128i_u32[0]; // a0 = first string + uint32_t str2 = ctx->r[5].m128i_u32[0]; // a1 = second string + uint32_t n = ctx->r[6].m128i_u32[0]; // a2 = max length + + uint32_t phys1 = str1 & 0x1FFFFFFF; + uint32_t phys2 = str2 & 0x1FFFFFFF; + + const char *str1Ptr = reinterpret_cast(rdram + phys1); + const char *str2Ptr = reinterpret_cast(rdram + phys2); + + int result = std::strncmp(str1Ptr, str2Ptr, n); + + ctx->r[2] = _mm_set1_epi32(result); + } + + // I/O operations + void printf(uint8_t *rdram, R5900Context *ctx) + { + uint32_t fmtAddr = ctx->r[4].m128i_u32[0]; // a0 = format string + + uint32_t physAddr = fmtAddr & 0x1FFFFFFF; + const char *fmt = reinterpret_cast(rdram + physAddr); + + // Simple implementation - just print the format string TODO we would parse the format and handle arguments + std::cout << "printf: " << fmt << std::endl; + + ctx->r[2] = _mm_set1_epi32(1); + } + + void sprintf(uint8_t *rdram, R5900Context *ctx) + { + uint32_t destAddr = ctx->r[4].m128i_u32[0]; // a0 = destination buffer + uint32_t fmtAddr = ctx->r[5].m128i_u32[0]; // a1 = format string + + uint32_t physDest = destAddr & 0x1FFFFFFF; + uint32_t physFmt = fmtAddr & 0x1FFFFFFF; + + char *destStr = reinterpret_cast(rdram + physDest); + const char *fmt = reinterpret_cast(rdram + physFmt); + + std::strcpy(destStr, fmt); + + size_t len = std::strlen(fmt); + ctx->r[2] = _mm_set1_epi32(static_cast(len)); + } + + void puts(uint8_t *rdram, R5900Context *ctx) + { + uint32_t strAddr = ctx->r[4].m128i_u32[0]; // a0 = string + + uint32_t physAddr = strAddr & 0x1FFFFFFF; + const char *str = reinterpret_cast(rdram + physAddr); + + std::cout << str << std::endl; + + // Return success (1) in v0 + ctx->r[2] = _mm_set1_epi32(1); + } + + // Memory allocation TODO need a proper PS2 heap implementation + void malloc(uint8_t *rdram, R5900Context *ctx) + { + uint32_t size = ctx->r[4].m128i_u32[0]; // a0 = size + + // Simple implementation - allocate from top of memory + + static uint32_t heapTop = 0x01000000; // Example heap start + + uint32_t allocAddr = heapTop; + heapTop += ((size + 15) & ~15); // Align to 16 bytes + + ctx->r[2] = _mm_set1_epi32(allocAddr); + } + + void free(uint8_t *rdram, R5900Context *ctx) + { + uint32_t ptr = ctx->r[4].m128i_u32[0]; // a0 = pointer + + // Simple implementation - do nothing + } + + void calloc(uint8_t *rdram, R5900Context *ctx) + { + uint32_t nmemb = ctx->r[4].m128i_u32[0]; // a0 = number of elements + uint32_t size = ctx->r[5].m128i_u32[0]; // a1 = size of each element + + uint32_t totalSize = nmemb * size; + + // Call malloc + ctx->r[4] = _mm_set1_epi32(totalSize); + malloc(rdram, ctx); + + // Zero the memory + uint32_t allocAddr = ctx->r[2].m128i_u32[0]; + uint32_t physAddr = allocAddr & 0x1FFFFFFF; + std::memset(rdram + physAddr, 0, totalSize); + + // Return value already in v0 from malloc + } + + void realloc(uint8_t *rdram, R5900Context *ctx) + { + uint32_t ptr = ctx->r[4].m128i_u32[0]; // a0 = pointer + uint32_t size = ctx->r[5].m128i_u32[0]; // a1 = new size + + // Simple implementation - allocate new block and copy + + if (ptr == 0) + { + ctx->r[4] = _mm_set1_epi32(size); + malloc(rdram, ctx); + return; + } + + // Allocate new block + uint32_t oldPtr = ptr; + ctx->r[4] = _mm_set1_epi32(size); + malloc(rdram, ctx); + uint32_t newPtr = ctx->r[2].m128i_u32[0]; + + // Copy data from old to new + uint32_t physOld = oldPtr & 0x1FFFFFFF; + uint32_t physNew = newPtr & 0x1FFFFFFF; + std::memcpy(rdram + physNew, rdram + physOld, size); + + // Return value already in v0 + } + + // Math functions + void sqrt(uint8_t *rdram, R5900Context *ctx) + { + // Assuming the argument is in the first FPU register (f12) + float arg = ctx->f[12]; + float result = std::sqrt(arg); + + // Return result in f0 + ctx->f[0] = result; + } + + void sin(uint8_t *rdram, R5900Context *ctx) + { + // Assuming the argument is in the first FPU register (f12) + float arg = ctx->f[12]; + float result = std::sin(arg); + + // Return result in f0 + ctx->f[0] = result; + } + + void cos(uint8_t *rdram, R5900Context *ctx) + { + // Assuming the argument is in the first FPU register (f12) + float arg = ctx->f[12]; + float result = std::cos(arg); + + // Return result in f0 + ctx->f[0] = result; + } + + void atan2(uint8_t *rdram, R5900Context *ctx) + { + // Assuming the arguments are in f12 and f13 + float y = ctx->f[12]; + float x = ctx->f[13]; + float result = std::atan2(y, x); + + // Return result in f0 + ctx->f[0] = result; + } +} + +// PS2 system call implementation stubs +namespace ps2_syscalls +{ + void FlushCache(uint8_t *rdram, R5900Context *ctx) + { + uint32_t operation = ctx->r[4].m128i_u32[0]; // a0 = operation + + std::cout << "FlushCache called with operation: " << operation << std::endl; + + // Operation values: + // 0 = Instruction cache + // 1 = Data cache + // 2 = Both + } + + void ExitThread(uint8_t *rdram, R5900Context *ctx) + { + uint32_t exitCode = ctx->r[4].m128i_u32[0]; // a0 = exit code + + std::cout << "ExitThread called with exit code: " << exitCode << std::endl; + + // This would terminate the current thread + } + + void SleepThread(uint8_t *rdram, R5900Context *ctx) + { + std::cout << "SleepThread called" << std::endl; + + // This would suspend the current thread + } + + void CreateThread(uint8_t *rdram, R5900Context *ctx) + { + uint32_t threadParam = ctx->r[4].m128i_u32[0]; // a0 = thread parameter + + // We need to extract all thread creation parameters + std::cout << "CreateThread called with parameter: " << std::hex << threadParam << std::dec << std::endl; + + // Return a dummy thread ID + ctx->r[2] = _mm_set1_epi32(1); + } + + void StartThread(uint8_t *rdram, R5900Context *ctx) + { + uint32_t threadId = ctx->r[4].m128i_u32[0]; // a0 = thread ID + uint32_t priority = ctx->r[5].m128i_u32[0]; // a1 = priority + + std::cout << "StartThread called with ID: " << threadId << ", priority: " << priority << std::endl; + + // Return success (0) + ctx->r[2] = _mm_set1_epi32(0); + } + + void SifInitRpc(uint8_t *rdram, R5900Context *ctx) + { + uint32_t mode = ctx->r[4].m128i_u32[0]; // a0 = mode + + std::cout << "SifInitRpc called with mode: " << mode << std::endl; + + // Return success (0) + ctx->r[2] = _mm_set1_epi32(0); + } + + void SifBindRpc(uint8_t *rdram, R5900Context *ctx) + { + uint32_t clientPtr = ctx->r[4].m128i_u32[0]; // a0 = client pointer + uint32_t rpcId = ctx->r[5].m128i_u32[0]; // a1 = RPC ID + uint32_t mode = ctx->r[6].m128i_u32[0]; // a2 = mode + + std::cout << "SifBindRpc called with client: " << std::hex << clientPtr + << ", RPC ID: " << rpcId << ", mode: " << mode << std::dec << std::endl; + + // Return success (0) + ctx->r[2] = _mm_set1_epi32(0); + } + + void SifCallRpc(uint8_t *rdram, R5900Context *ctx) + { + uint32_t clientPtr = ctx->r[4].m128i_u32[0]; // a0 = client pointer + uint32_t command = ctx->r[5].m128i_u32[0]; // a1 = command + uint32_t mode = ctx->r[6].m128i_u32[0]; // a2 = mode + + std::cout << "SifCallRpc called with client: " << std::hex << clientPtr + << ", command: " << command << ", mode: " << mode << std::dec << std::endl; + + // Return success (0) + ctx->r[2] = _mm_set1_epi32(0); + } + + void SetGsCrt(uint8_t *rdram, R5900Context *ctx) + { + uint32_t interlaced = ctx->r[4].m128i_u32[0]; // a0 = interlaced + uint32_t mode = ctx->r[5].m128i_u32[0]; // a1 = mode (NTSC/PAL) + uint32_t field = ctx->r[6].m128i_u32[0]; // a2 = field + + std::cout << "SetGsCrt called with interlaced: " << interlaced + << ", mode: " << mode << ", field: " << field << std::endl; + + // No return value + } +} + +// MMI operation implementations +namespace ps2_mmi +{ + void PADDW(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_add_epi32(ctx->r[rs], ctx->r[rt]); + } + + void PSUBW(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_sub_epi32(ctx->r[rs], ctx->r[rt]); + } + + void PCGTW(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_cmpgt_epi32(ctx->r[rs], ctx->r[rt]); + } + + void PMAXW(R5900Context *ctx, int rd, int rs, int rt) + { + // we could use _mm_max_epi32 but is SSE4.1 + __m128i mask = _mm_cmpgt_epi32(ctx->r[rs], ctx->r[rt]); + ctx->r[rd] = _mm_or_si128( + _mm_and_si128(mask, ctx->r[rs]), + _mm_andnot_si128(mask, ctx->r[rt])); + } + + void PADDH(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_add_epi16(ctx->r[rs], ctx->r[rt]); + } + + void PSUBH(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_sub_epi16(ctx->r[rs], ctx->r[rt]); + } + + void PCGTH(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_cmpgt_epi16(ctx->r[rs], ctx->r[rt]); + } + + void PMAXH(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_max_epi16(ctx->r[rs], ctx->r[rt]); + } + + void PADDB(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_add_epi8(ctx->r[rs], ctx->r[rt]); + } + + void PSUBB(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_sub_epi8(ctx->r[rs], ctx->r[rt]); + } + + void PCGTB(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_cmpgt_epi8(ctx->r[rs], ctx->r[rt]); + } + + void PEXTLW(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_unpacklo_epi32(ctx->r[rt], ctx->r[rs]); + } + + void PEXTUW(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_unpackhi_epi32(ctx->r[rt], ctx->r[rs]); + } + + void PEXTLH(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_unpacklo_epi16(ctx->r[rt], ctx->r[rs]); + } + + void PEXTUH(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_unpackhi_epi16(ctx->r[rt], ctx->r[rs]); + } + + void PEXTLB(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_unpacklo_epi8(ctx->r[rt], ctx->r[rs]); + } + + void PEXTUB(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_unpackhi_epi8(ctx->r[rt], ctx->r[rs]); + } + + void PMADDW(R5900Context *ctx, int rd, int rs, int rt) + { + // We need to compute (rs * rt) + (HI:LO) and store in both rd and HI:LO + // This is a simplification as the actual MMI operation is more complex + + // Just do vector multiplication + __m128i product = _mm_mullo_epi32(ctx->r[rs], ctx->r[rt]); + + // Add the current HI:LO values + // This is a simplified version + __m128i hiLo = _mm_set_epi32(0, ctx->hi, 0, ctx->lo); + __m128i result = _mm_add_epi32(product, hiLo); + + // Set result and update HI:LO + ctx->r[rd] = result; + ctx->lo = _mm_extract_epi32(result, 0); + ctx->hi = _mm_extract_epi32(result, 1); + } + + void PMSUBW(R5900Context *ctx, int rd, int rs, int rt) + { + // Similar to PMADDW but subtracts + __m128i product = _mm_mullo_epi32(ctx->r[rs], ctx->r[rt]); + + __m128i hiLo = _mm_set_epi32(0, ctx->hi, 0, ctx->lo); + __m128i result = _mm_sub_epi32(hiLo, product); + + ctx->r[rd] = result; + ctx->lo = _mm_extract_epi32(result, 0); + ctx->hi = _mm_extract_epi32(result, 1); + } + + void PAND(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_and_si128(ctx->r[rs], ctx->r[rt]); + } + + void POR(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_or_si128(ctx->r[rs], ctx->r[rt]); + } + + void PXOR(R5900Context *ctx, int rd, int rs, int rt) + { + ctx->r[rd] = _mm_xor_si128(ctx->r[rs], ctx->r[rt]); + } + + void PNOR(R5900Context *ctx, int rd, int rs, int rt) + { + __m128i orResult = _mm_or_si128(ctx->r[rs], ctx->r[rt]); + ctx->r[rd] = _mm_xor_si128(orResult, _mm_set1_epi32(0xFFFFFFFF)); + } +} + +// Hardware register handlers +namespace ps2_hardware +{ + void handleDmacReg(uint32_t address, uint32_t value) + { + uint32_t channel = (address >> 8) & 0xF; + uint32_t reg = address & 0xFF; + + std::cout << "DMA channel " << channel << " register " << std::hex << reg + << " written with value " << value << std::dec << std::endl; + + // Check if this is the start bit in the channel control register + if (reg == 0 && (value & 0x100)) + { + std::cout << "Starting DMA transfer on channel " << channel << std::endl; + + // Initiate DMA transfer here + } + } + + // GS register handlers + void handleGsReg(uint32_t address, uint32_t value) + { + std::cout << "GS register " << std::hex << address << " written with value " + << value << std::dec << std::endl; + + // Update GS state and possibly trigger rendering + } + + // VIF register handlers + void handleVif0Reg(uint32_t address, uint32_t value) + { + uint32_t reg = address & 0xFF; + + std::cout << "VIF0 register " << std::hex << reg << " written with value " + << value << std::dec << std::endl; + + // Handle VIF0 operations + } + + void handleVif1Reg(uint32_t address, uint32_t value) + { + uint32_t reg = address & 0xFF; + + std::cout << "VIF1 register " << std::hex << reg << " written with value " + << value << std::dec << std::endl; + + // Handle VIF1 operations + } + + void handleTimerReg(uint32_t address, uint32_t value) + { + uint32_t timer = (address >> 4) & 0x3; + uint32_t reg = address & 0xF; + + std::cout << "Timer " << timer << " register " << std::hex << reg << " written with value " + << value << std::dec << std::endl; + + // Update timer state + } + + void handleSPU2Reg(uint32_t address, uint32_t value) + { + std::cout << "SPU2 register " << std::hex << address << " written with value " + << value << std::dec << std::endl; + + // Update audio state + } +} +#endif // PS2_STUBS_H \ No newline at end of file