diff options
| author | MerryMage <MerryMage@users.noreply.github.com> | 2016-04-16 15:22:45 +0100 |
|---|---|---|
| committer | Subv <subv2112@gmail.com> | 2016-05-28 13:44:49 -0500 |
| commit | 31d49e01094068519850bbfa414f314fdb27beee (patch) | |
| tree | 088a73db78fdcd567c3e4850c4add8c4d6a6522e /src/core/memory.cpp | |
| parent | e936f5952cd1de5db2758747396666a380843d9d (diff) | |
Memory: CopyBlock
Diffstat (limited to 'src/core/memory.cpp')
| -rw-r--r-- | src/core/memory.cpp | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/core/memory.cpp b/src/core/memory.cpp index 1604a7da5d..bf2493270d 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -495,6 +495,47 @@ void ZeroBlock(const VAddr dest_addr, const size_t size) { } } +void CopyBlock(VAddr dest_addr, VAddr src_addr, const size_t size) { + size_t remaining_size = size; + size_t page_index = src_addr >> PAGE_BITS; + size_t page_offset = src_addr & PAGE_MASK; + + while (remaining_size > 0) { + const size_t copy_amount = std::min(PAGE_SIZE - page_offset, remaining_size); + const VAddr current_vaddr = (page_index << PAGE_BITS) + page_offset; + + switch (current_page_table->attributes[page_index]) { + case PageType::Unmapped: { + LOG_ERROR(HW_Memory, "unmapped CopyBlock @ 0x%08X (start address = 0x%08X, size = %zu)", current_vaddr, src_addr, size); + ZeroBlock(dest_addr, copy_amount); + break; + } + case PageType::Memory: { + DEBUG_ASSERT(current_page_table->pointers[page_index]); + const u8* src_ptr = current_page_table->pointers[page_index] + page_offset; + WriteBlock(dest_addr, src_ptr, copy_amount); + break; + } + case PageType::Special: { + DEBUG_ASSERT(GetMMIOHandler(current_vaddr)); + + std::vector<u8> buffer(copy_amount); + GetMMIOHandler(current_vaddr)->ReadBlock(current_vaddr, buffer.data(), buffer.size()); + WriteBlock(dest_addr, buffer.data(), buffer.size()); + break; + } + default: + UNREACHABLE(); + } + + page_index++; + page_offset = 0; + dest_addr += copy_amount; + src_addr += copy_amount; + remaining_size -= copy_amount; + } +} + template<> u8 ReadMMIO<u8>(MMIORegionPointer mmio_handler, VAddr addr) { return mmio_handler->Read8(addr); |