mirror of
https://gitlab.com/suyu-emu/suyu.git
synced 2024-03-15 23:15:44 +00:00
process: Add method to mirror a memory region.
This commit is contained in:
parent
7618b5237d
commit
3421e1617e
|
@ -267,6 +267,31 @@ ResultCode Process::LinearFree(VAddr target, u32 size) {
|
||||||
return RESULT_SUCCESS;
|
return RESULT_SUCCESS;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
ResultCode Process::MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size) {
|
||||||
|
auto vma = vm_manager.FindVMA(src_addr);
|
||||||
|
|
||||||
|
ASSERT_MSG(vma != vm_manager.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.
|
||||||
|
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;
|
||||||
|
size_t backing_block_offset = vma->second.offset + vma_offset;
|
||||||
|
|
||||||
|
CASCADE_RESULT(auto new_vma,
|
||||||
|
vm_manager.MapMemoryBlock(dst_addr, backing_block, backing_block_offset, size,
|
||||||
|
vma->second.meminfo_state));
|
||||||
|
// Protect mirror with permissions from old region
|
||||||
|
vm_manager.Reprotect(new_vma, vma->second.permissions);
|
||||||
|
// Remove permissions from old region
|
||||||
|
vm_manager.Reprotect(vma, VMAPermission::None);
|
||||||
|
|
||||||
|
return RESULT_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
Kernel::Process::Process() {}
|
Kernel::Process::Process() {}
|
||||||
Kernel::Process::~Process() {}
|
Kernel::Process::~Process() {}
|
||||||
|
|
||||||
|
|
|
@ -177,6 +177,8 @@ public:
|
||||||
ResultVal<VAddr> LinearAllocate(VAddr target, u32 size, VMAPermission perms);
|
ResultVal<VAddr> LinearAllocate(VAddr target, u32 size, VMAPermission perms);
|
||||||
ResultCode LinearFree(VAddr target, u32 size);
|
ResultCode LinearFree(VAddr target, u32 size);
|
||||||
|
|
||||||
|
ResultCode MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size);
|
||||||
|
|
||||||
private:
|
private:
|
||||||
Process();
|
Process();
|
||||||
~Process() override;
|
~Process() override;
|
||||||
|
|
Loading…
Reference in a new issue