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Merge pull request #6385 from degasus/save_memory_access

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core/memory: Check our memory fallbacks for out-of-bound behavior.
This commit is contained in:
bunnei
2021-05-30 23:21:39 -07:00
committed by GitHub
parent 95f45112e9 42a7c5d017
commit f34176996e
5 changed files with 77 additions and 33 deletions
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1
src/common/page_table.cpp
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@ -14,6 +14,7 @@ void PageTable::Resize(size_t address_space_width_in_bits, size_t page_size_in_b
const size_t num_page_table_entries{1ULL << (address_space_width_in_bits - page_size_in_bits)};
pointers.resize(num_page_table_entries);
backing_addr.resize(num_page_table_entries);
current_address_space_width_in_bits = address_space_width_in_bits;
}
} // namespace Common

6
src/common/page_table.h
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@ -98,6 +98,10 @@ struct PageTable {
*/
void Resize(size_t address_space_width_in_bits, size_t page_size_in_bits);
size_t GetAddressSpaceBits() const {
return current_address_space_width_in_bits;
}
/**
* Vector of memory pointers backing each page. An entry can only be non-null if the
* corresponding attribute element is of type `Memory`.
@ -105,6 +109,8 @@ struct PageTable {
VirtualBuffer<PageInfo> pointers;
VirtualBuffer<u64> backing_addr;
size_t current_address_space_width_in_bits;
};
} // namespace Common