Memory: ReadBlock/WriteBlock
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c084fc824c
commit
3873b36db3
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@ -364,6 +364,45 @@ u64 Read64(const VAddr addr) {
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return Read<u64_le>(addr);
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}
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void ReadBlock(const VAddr src_addr, u8* dest_buffer, const size_t size) {
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size_t remaining_size = size;
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size_t page_index = src_addr >> PAGE_BITS;
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size_t page_offset = src_addr & PAGE_MASK;
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while (remaining_size > 0) {
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const size_t copy_amount = std::min(PAGE_SIZE - page_offset, remaining_size);
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const VAddr current_vaddr = (page_index << PAGE_BITS) + page_offset;
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switch (current_page_table->attributes[page_index]) {
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case PageType::Unmapped: {
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LOG_ERROR(HW_Memory, "unmapped ReadBlock @ 0x%08X (start address = 0x%08X, size = %zu)", current_vaddr, src_addr, size);
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std::memset(dest_buffer, 0, copy_amount);
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break;
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}
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case PageType::Memory: {
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DEBUG_ASSERT(current_page_table->pointers[page_index]);
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const u8* src_ptr = current_page_table->pointers[page_index] + page_offset;
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std::memcpy(dest_buffer, src_ptr, copy_amount);
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break;
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}
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case PageType::Special: {
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DEBUG_ASSERT(GetMMIOHandler(current_vaddr));
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GetMMIOHandler(current_vaddr)->ReadBlock(current_vaddr, dest_buffer, copy_amount);
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break;
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}
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default:
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UNREACHABLE();
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}
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page_index++;
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page_offset = 0;
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dest_buffer += copy_amount;
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remaining_size -= copy_amount;
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}
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}
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void Write8(const VAddr addr, const u8 data) {
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Write<u8>(addr, data);
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}
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@ -380,9 +419,41 @@ void Write64(const VAddr addr, const u64 data) {
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Write<u64_le>(addr, data);
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}
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void WriteBlock(const VAddr addr, const u8* data, const size_t size) {
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for (u32 offset = 0; offset < size; offset++) {
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Write8(addr + offset, data[offset]);
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void WriteBlock(const VAddr dest_addr, const u8* src_buffer, const size_t size) {
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size_t remaining_size = size;
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size_t page_index = dest_addr >> PAGE_BITS;
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size_t page_offset = dest_addr & PAGE_MASK;
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while (remaining_size > 0) {
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const size_t copy_amount = std::min(PAGE_SIZE - page_offset, remaining_size);
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const VAddr current_vaddr = (page_index << PAGE_BITS) + page_offset;
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switch (current_page_table->attributes[page_index]) {
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case PageType::Unmapped: {
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LOG_ERROR(HW_Memory, "unmapped WriteBlock @ 0x%08X (start address = 0x%08X, size = %zu)", current_vaddr, dest_addr, size);
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break;
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}
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case PageType::Memory: {
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DEBUG_ASSERT(current_page_table->pointers[page_index]);
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u8* dest_ptr = current_page_table->pointers[page_index] + page_offset;
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std::memcpy(dest_ptr, src_buffer, copy_amount);
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break;
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}
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case PageType::Special: {
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DEBUG_ASSERT(GetMMIOHandler(current_vaddr));
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GetMMIOHandler(current_vaddr)->WriteBlock(current_vaddr, src_buffer, copy_amount);
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break;
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}
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default:
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UNREACHABLE();
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}
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page_index++;
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page_offset = 0;
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src_buffer += copy_amount;
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remaining_size -= copy_amount;
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}
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}
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@ -118,12 +118,14 @@ u16 Read16(VAddr addr);
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u32 Read32(VAddr addr);
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u64 Read64(VAddr addr);
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void ReadBlock(const VAddr src_addr, u8* dest_buffer, size_t size);
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void Write8(VAddr addr, u8 data);
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void Write16(VAddr addr, u16 data);
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void Write32(VAddr addr, u32 data);
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void Write64(VAddr addr, u64 data);
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void WriteBlock(VAddr addr, const u8* data, size_t size);
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void WriteBlock(const VAddr dest_addr, const u8* src_buffer, size_t size);
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u8* GetPointer(VAddr virtual_address);
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@ -25,10 +25,14 @@ public:
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virtual u32 Read32(VAddr addr) = 0;
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virtual u64 Read64(VAddr addr) = 0;
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virtual bool ReadBlock(VAddr src_addr, u8* dest_buffer, size_t size) = 0;
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virtual void Write8(VAddr addr, u8 data) = 0;
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virtual void Write16(VAddr addr, u16 data) = 0;
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virtual void Write32(VAddr addr, u32 data) = 0;
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virtual void Write64(VAddr addr, u64 data) = 0;
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virtual bool WriteBlock(VAddr dest_addr, const u8* src_buffer, size_t size) = 0;
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};
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using MMIORegionPointer = std::shared_ptr<MMIORegion>;
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