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Kernel/Threads: Dynamically allocate the TLS region for threads in the BASE region of the linear heap.

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Each thread gets a 0x200-byte area from the 0x1000-sized page, when all 8 thread slots in a single page are used up, the kernel allocates a new page to hold another 8 entries.

This is consistent with what the real kernel does.
This commit is contained in:
Subv 2016-04-19 17:12:48 -05:00
parent 3e7e8daf59
commit d192fb066d
5 changed files with 74 additions and 28 deletions
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6
src/core/memory.h
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@ -100,15 +100,9 @@ enum : VAddr {
SHARED_PAGE_SIZE = 0x00001000,
SHARED_PAGE_VADDR_END = SHARED_PAGE_VADDR + SHARED_PAGE_SIZE,
// TODO(yuriks): The size of this area is dynamic, the kernel grows
// it as more and more threads are created. For now we'll just use a
// hardcoded value.
/// Area where TLS (Thread-Local Storage) buffers are allocated.
TLS_AREA_VADDR = 0x1FF82000,
TLS_ENTRY_SIZE = 0x200,
TLS_AREA_SIZE = 300 * TLS_ENTRY_SIZE + 0x800, // Space for up to 300 threads + round to page size
TLS_AREA_VADDR_END = TLS_AREA_VADDR + TLS_AREA_SIZE,
/// Equivalent to LINEAR_HEAP_VADDR, but expanded to cover the extra memory in the New 3DS.
NEW_LINEAR_HEAP_VADDR = 0x30000000,