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Better unreserved physical page counting.

This commit is contained in:
gibbed 2016-06-21 10:10:47 -05:00
parent 16a15bab98
commit e95a08fc87
1 changed files with 19 additions and 14 deletions
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33
src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc
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@ -448,22 +448,27 @@ SHIM_CALL MmQueryStatistics_shim(PPCContext* ppc_context,
stats->kernel_pages = 0x00000300;
// TODO(gibbed): maybe use LookupHeapByType instead?
auto physA = kernel_memory()->LookupHeap(0xA0000000);
auto physC = kernel_memory()->LookupHeap(0xC0000000);
auto physE = kernel_memory()->LookupHeap(0xE0000000);
assert_not_null(physA);
assert_not_null(physC);
assert_not_null(physE);
auto heap_a = kernel_memory()->LookupHeap(0xA0000000);
auto heap_c = kernel_memory()->LookupHeap(0xC0000000);
auto heap_e = kernel_memory()->LookupHeap(0xE0000000);
uint32_t available_pages = 0;
available_pages +=
(physA->GetUnreservedPageCount() * physA->page_size()) / 4096;
available_pages +=
(physC->GetUnreservedPageCount() * physC->page_size()) / 4096;
available_pages +=
(physE->GetUnreservedPageCount() * physE->page_size()) / 4096;
assert_not_null(heap_a);
assert_not_null(heap_c);
assert_not_null(heap_e);
stats->title.available_pages = available_pages;
#define GET_USED_PAGE_COUNT(x) \
(x->GetTotalPageCount() - x->GetUnreservedPageCount())
#define GET_USED_PAGE_SIZE(x) ((GET_USED_PAGE_COUNT(x) * x->page_size()) / 4096)
uint32_t used_pages = 0;
used_pages += GET_USED_PAGE_SIZE(heap_a);
used_pages += GET_USED_PAGE_SIZE(heap_c);
used_pages += GET_USED_PAGE_SIZE(heap_e);
#undef GET_USED_PAGE_SIZE
#undef GET_USED_PAGE_COUNT
assert_true(used_pages < stats->total_physical_pages);
stats->title.available_pages = stats->total_physical_pages - used_pages;
stats->title.total_virtual_memory_bytes = 0x2FFF0000; // TODO(gibbed): FIXME
stats->title.reserved_virtual_memory_bytes =
0x00160000; // TODO(gibbed): FIXME