diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/vm_manager.cpp | 82 |
1 files changed, 80 insertions, 2 deletions
diff --git a/src/core/hle/kernel/vm_manager.cpp b/src/core/hle/kernel/vm_manager.cpp index 1a92c8f70..ec7fd6150 100644 --- a/src/core/hle/kernel/vm_manager.cpp +++ b/src/core/hle/kernel/vm_manager.cpp @@ -243,6 +243,85 @@ ResultCode VMManager::ReprotectRange(VAddr target, u64 size, VMAPermission new_p return RESULT_SUCCESS; } +ResultVal<VAddr> VMManager::HeapAllocate(VAddr target, u64 size, VMAPermission perms) { + if (target < GetHeapRegionBaseAddress() || target + size > GetHeapRegionEndAddress() || + target + size < target) { + return ERR_INVALID_ADDRESS; + } + + if (heap_memory == nullptr) { + // Initialize heap + heap_memory = std::make_shared<std::vector<u8>>(); + heap_start = heap_end = target; + } else { + UnmapRange(heap_start, heap_end - heap_start); + } + + // If necessary, expand backing vector to cover new heap extents. + if (target < heap_start) { + heap_memory->insert(begin(*heap_memory), heap_start - target, 0); + heap_start = target; + RefreshMemoryBlockMappings(heap_memory.get()); + } + if (target + size > heap_end) { + heap_memory->insert(end(*heap_memory), (target + size) - heap_end, 0); + heap_end = target + size; + RefreshMemoryBlockMappings(heap_memory.get()); + } + ASSERT(heap_end - heap_start == heap_memory->size()); + + CASCADE_RESULT(auto vma, MapMemoryBlock(target, heap_memory, target - heap_start, size, + MemoryState::Heap)); + Reprotect(vma, perms); + + heap_used = size; + + return MakeResult<VAddr>(heap_end - size); +} + +ResultCode VMManager::HeapFree(VAddr target, u64 size) { + if (target < GetHeapRegionBaseAddress() || target + size > GetHeapRegionEndAddress() || + target + size < target) { + return ERR_INVALID_ADDRESS; + } + + if (size == 0) { + return RESULT_SUCCESS; + } + + const ResultCode result = UnmapRange(target, size); + if (result.IsError()) { + return result; + } + + heap_used -= size; + return RESULT_SUCCESS; +} + +ResultCode VMManager::MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size) { + const auto vma = FindVMA(src_addr); + + ASSERT_MSG(vma != vma_map.end(), "Invalid memory address"); + ASSERT_MSG(vma->second.backing_block, "Backing block doesn't exist for address"); + + // The returned VMA might be a bigger one encompassing the desired address. + const auto vma_offset = src_addr - vma->first; + ASSERT_MSG(vma_offset + size <= vma->second.size, + "Shared memory exceeds bounds of mapped block"); + + const std::shared_ptr<std::vector<u8>>& backing_block = vma->second.backing_block; + const std::size_t backing_block_offset = vma->second.offset + vma_offset; + + CASCADE_RESULT(auto new_vma, MapMemoryBlock(dst_addr, backing_block, backing_block_offset, size, + MemoryState::Mapped)); + // Protect mirror with permissions from old region + Reprotect(new_vma, vma->second.permissions); + // Remove permissions from old region + Reprotect(vma, VMAPermission::None); + + return RESULT_SUCCESS; +} + void VMManager::RefreshMemoryBlockMappings(const std::vector<u8>* block) { // If this ever proves to have a noticeable performance impact, allow users of the function to // specify a specific range of addresses to limit the scan to. @@ -495,8 +574,7 @@ u64 VMManager::GetTotalMemoryUsage() const { } u64 VMManager::GetTotalHeapUsage() const { - LOG_WARNING(Kernel, "(STUBBED) called"); - return 0x0; + return heap_used; } VAddr VMManager::GetAddressSpaceBaseAddress() const { |