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src/hotspot/os_cpu/windows_x86/os_windows_x86.cpp

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8248238: Adding Windows support to OpenJDK on AArch64

Summary: Adding Windows support for AArch64

Contributed-by: Ludovic Henry <luhenry@microsoft.com>, Monica Beckwith <monica.beckwith@microsoft.com>
Reviewed-by:

*** 486,495 **** --- 486,530 ---- StubRoutines::x86::get_previous_sp_entry()); return (*func)(); } #endif + bool os::win32::get_frame_at_stack_banging_point(JavaThread* thread, + struct _EXCEPTION_POINTERS* exceptionInfo, address pc, frame* fr) { + PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord; + address addr = (address) exceptionRecord->ExceptionInformation[1]; + if (Interpreter::contains(pc)) { + *fr = os::fetch_frame_from_context((void*)exceptionInfo->ContextRecord); + if (!fr->is_first_java_frame()) { + // get_frame_at_stack_banging_point() is only called when we + // have well defined stacks so java_sender() calls do not need + // to assert safe_for_sender() first. + *fr = fr->java_sender(); + } + } else { + // more complex code with compiled code + assert(!Interpreter::contains(pc), "Interpreted methods should have been handled above"); + CodeBlob* cb = CodeCache::find_blob(pc); + if (cb == NULL || !cb->is_nmethod() || cb->is_frame_complete_at(pc)) { + // Not sure where the pc points to, fallback to default + // stack overflow handling + return false; + } else { + // in compiled code, the stack banging is performed just after the return pc + // has been pushed on the stack + intptr_t* fp = (intptr_t*)exceptionInfo->ContextRecord->REG_FP; + intptr_t* sp = (intptr_t*)exceptionInfo->ContextRecord->REG_SP; + *fr = frame(sp + 1, fp, (address)*sp); + if (!fr->is_java_frame()) { + // See java_sender() comment above. + *fr = fr->java_sender(); + } + } + } + assert(fr->is_java_frame(), "Safety check"); + return true; + } #ifndef AMD64 intptr_t* _get_previous_fp() { intptr_t **frameptr; __asm {
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