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Fixing page guards to work at system page granularity.

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This commit is contained in:
Ben Vanik
2015-05-18 20:25:15 -07:00
parent bb5466d7b2
commit 7796f5cb60
2 changed files with 16 additions and 7 deletions
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4
src/xenia/cpu/thread_state.cc
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@@ -46,9 +46,11 @@ ThreadState::ThreadState(Processor* processor, uint32_t thread_id,
backend_data_ = processor->backend()->AllocThreadData();
if (!stack_address) {
// We must always allocate 64K as a guard region before stacks, as we can
// only Protect() on system page granularity.
stack_size = (stack_size + 0xFFF) & 0xFFFFF000;
uint32_t stack_alignment = (stack_size & 0xF000) ? 0x1000 : 0x10000;
uint32_t stack_padding = stack_alignment * 1;
uint32_t stack_padding = xe::page_size(); // Host page size.
uint32_t actual_stack_size = stack_padding + stack_size;
bool top_down;
switch (stack_type) {