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Fixed top-down memory allocations when alignment > page size.

This commit is contained in:
gibbed 2016-06-20 12:02:48 -05:00
parent 919d84ad73
commit 6a082c42d3
1 changed files with 2 additions and 1 deletions
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3
src/xenia/memory.cc
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@ -751,7 +751,8 @@ bool BaseHeap::AllocRange(uint32_t low_address, uint32_t high_address,
uint32_t page_scan_stride = alignment / page_size_; uint32_t page_scan_stride = alignment / page_size_;
high_page_number = high_page_number - (high_page_number % page_scan_stride); high_page_number = high_page_number - (high_page_number % page_scan_stride);
if (top_down) { if (top_down) {
for (int64_t base_page_number = high_page_number - page_count; for (int64_t base_page_number =
high_page_number - xe::round_up(page_count, page_scan_stride);
base_page_number >= low_page_number; base_page_number >= low_page_number;
base_page_number -= page_scan_stride) { base_page_number -= page_scan_stride) {
if (page_table_[base_page_number].state != 0) { if (page_table_[base_page_number].state != 0) {