From 31d49e01094068519850bbfa414f314fdb27beee Mon Sep 17 00:00:00 2001
From: MerryMage <MerryMage@users.noreply.github.com>
Date: Sat, 16 Apr 2016 15:22:45 +0100
Subject: Memory: CopyBlock
---
src/core/memory.cpp | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
(limited to 'src/core/memory.cpp')
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);
--
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