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Kernel: reimplement memory management on physical FCRAM (#4392)

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* Kernel: reimplement memory management on physical FCRAM

* Kernel/Process: Unmap does not care the source memory permission

What game usually does is after mapping the memory, they reprotect the source memory as no permission to avoid modification there

* Kernel/SharedMemory: zero initialize new-allocated memory

* Process/Thread: zero new TLS entry

* Kernel: fix a bug where code segments memory usage are accumulated twice

It is added to both misc and heap (done inside HeapAlloc), which results a doubled number reported by svcGetProcessInfo. While we are on it, we just merge the three number misc, heap and linear heap usage together, as there is no where they are distinguished.

Question: is TLS page also added to this number?

* Kernel/SharedMemory: add more object info on mapping error

* Process: lower log level; SharedMemory: store phys offset

* VMManager: add helper function to retrieve backing block list for a range
This commit is contained in:
Weiyi Wang 2018-11-06 15:00:47 -05:00 • committed by GitHub
parent f852f9f219
commit 2067946f59
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19 changed files with 389 additions and 208 deletions
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17
src/core/hle/kernel/process.h
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@ -165,15 +165,7 @@ public:
VMManager vm_manager;
// Memory used to back the allocations in the regular heap. A single vector is used to cover
// the entire virtual address space extents that bound the allocations, including any holes.
// This makes deallocation and reallocation of holes fast and keeps process memory contiguous
// in the emulator address space, allowing Memory::GetPointer to be reasonably safe.
std::shared_ptr<std::vector<u8>> heap_memory;
// The left/right bounds of the address space covered by heap_memory.
VAddr heap_start = 0, heap_end = 0;
u32 heap_used = 0, linear_heap_used = 0, misc_memory_used = 0;
u32 memory_used = 0;
MemoryRegionInfo* memory_region = nullptr;
@ -188,12 +180,17 @@ public:
VAddr GetLinearHeapBase() const;
VAddr GetLinearHeapLimit() const;
ResultVal<VAddr> HeapAllocate(VAddr target, u32 size, VMAPermission perms);
ResultVal<VAddr> HeapAllocate(VAddr target, u32 size, VMAPermission perms,
MemoryState memory_state = MemoryState::Private,
bool skip_range_check = false);
ResultCode HeapFree(VAddr target, u32 size);
ResultVal<VAddr> LinearAllocate(VAddr target, u32 size, VMAPermission perms);
ResultCode LinearFree(VAddr target, u32 size);
ResultCode Map(VAddr target, VAddr source, u32 size, VMAPermission perms);
ResultCode Unmap(VAddr target, VAddr source, u32 size, VMAPermission perms);
private:
explicit Process(Kernel::KernelSystem& kernel);
~Process() override;