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comparison src/os_cpu/windows_x86/vm/os_windows_x86.cpp @ 6275:957c266d8bc5

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Merge with http://hg.openjdk.java.net/hsx/hsx24/hotspot/
author Doug Simon <doug.simon@oracle.com>
date Tue, 21 Aug 2012 10:39:19 +0200
parents 897b7d18bebc da4be62fb889
children e522a00b91aa
comparison
equal deleted inserted replaced
5891:fd8832ae511d 6275:957c266d8bc5
368 // we can use the StackWalk() API. 368 // we can use the StackWalk() API.
369 frame os::get_sender_for_C_frame(frame* fr) { 369 frame os::get_sender_for_C_frame(frame* fr) {
370 return frame(fr->sender_sp(), fr->link(), fr->sender_pc()); 370 return frame(fr->sender_sp(), fr->link(), fr->sender_pc());
371 } 371 }
372 372
373 #ifndef AMD64
374 // Returns an estimate of the current stack pointer. Result must be guaranteed
375 // to point into the calling threads stack, and be no lower than the current
376 // stack pointer.
377 address os::current_stack_pointer() {
378 int dummy;
379 address sp = (address)&dummy;
380 return sp;
381 }
382 #else
383 // Returns the current stack pointer. Accurate value needed for
384 // os::verify_stack_alignment().
385 address os::current_stack_pointer() {
386 typedef address get_sp_func();
387 get_sp_func* func = CAST_TO_FN_PTR(get_sp_func*,
388 StubRoutines::x86::get_previous_sp_entry());
389 return (*func)();
390 }
391 #endif
392
373 393
374 #ifndef AMD64 394 #ifndef AMD64
375 intptr_t* _get_previous_fp() { 395 intptr_t* _get_previous_fp() {
376 intptr_t **frameptr; 396 intptr_t **frameptr;
377 __asm { 397 __asm {
544 #ifndef AMD64 564 #ifndef AMD64
545 int fpu_cntrl_word = StubRoutines::fpu_cntrl_wrd_std(); 565 int fpu_cntrl_word = StubRoutines::fpu_cntrl_wrd_std();
546 __asm fldcw fpu_cntrl_word; 566 __asm fldcw fpu_cntrl_word;
547 #endif // !AMD64 567 #endif // !AMD64
548 } 568 }
569
570 #ifndef PRODUCT
571 void os::verify_stack_alignment() {
572 #ifdef AMD64
573 assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment");
574 #endif
575 }
576 #endif