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8139864: Improve handling of stack protection zones

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Reviewed-by: stuefe, coleenp, fparain
This commit is contained in:
Goetz Lindenmaier 2015-12-20 10:37:23 -05:00
parent 8c13cfe16c
commit b5bca5cc1b
43 changed files with 314 additions and 228 deletions
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5
hotspot/src/share/vm/interpreter/interpreter.cpp
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@ -532,9 +532,10 @@ void AbstractInterpreterGenerator::bang_stack_shadow_pages(bool native_call) {
// an interpreter frame with greater than a page of locals, so each page
// needs to be checked. Only true for non-native.
if (UseStackBanging) {
const int start_page = native_call ? StackShadowPages : 1;
const int page_size = os::vm_page_size();
for (int pages = start_page; pages <= StackShadowPages ; pages++) {
const int n_shadow_pages = ((int)JavaThread::stack_shadow_zone_size()) / page_size;
const int start_page = native_call ? n_shadow_pages : 1;
for (int pages = start_page; pages <= n_shadow_pages; pages++) {
__ bang_stack_with_offset(pages*page_size);
}
}