535 // make sure exception is set
536 {
537 Label L;
538 __ testptr(rax, rax);
539 __ jcc(Assembler::notEqual, L);
540 __ stop("StubRoutines::forward exception: no pending exception (2)");
541 __ bind(L);
542 }
543 #endif
544
545 // continue at exception handler (return address removed)
546 // rax: exception
547 // rbx: exception handler
548 // rdx: throwing pc
549 __ verify_oop(rax);
550 __ jmp(rbx);
551
552 return start;
553 }
554
555 // Support for jint atomic::xchg(jint exchange_value, volatile jint* dest)
556 //
557 // Arguments :
558 // c_rarg0: exchange_value
559 // c_rarg0: dest
560 //
561 // Result:
562 // *dest <- ex, return (orig *dest)
563 address generate_atomic_xchg() {
564 StubCodeMark mark(this, "StubRoutines", "atomic_xchg");
565 address start = __ pc();
566
567 __ movl(rax, c_rarg0); // Copy to eax we need a return value anyhow
568 __ xchgl(rax, Address(c_rarg1, 0)); // automatic LOCK
569 __ ret(0);
570
571 return start;
572 }
573
574 // Support for intptr_t atomic::xchg_long(jlong exchange_value, volatile jlong* dest)
575 //
576 // Arguments :
577 // c_rarg0: exchange_value
578 // c_rarg1: dest
579 //
580 // Result:
581 // *dest <- ex, return (orig *dest)
582 address generate_atomic_xchg_long() {
583 StubCodeMark mark(this, "StubRoutines", "atomic_xchg_long");
584 address start = __ pc();
585
586 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow
587 __ xchgptr(rax, Address(c_rarg1, 0)); // automatic LOCK
588 __ ret(0);
589
590 return start;
591 }
592
593 // Support for jint atomic::atomic_cmpxchg(jint exchange_value, volatile jint* dest,
594 // jint compare_value)
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535 // make sure exception is set
536 {
537 Label L;
538 __ testptr(rax, rax);
539 __ jcc(Assembler::notEqual, L);
540 __ stop("StubRoutines::forward exception: no pending exception (2)");
541 __ bind(L);
542 }
543 #endif
544
545 // continue at exception handler (return address removed)
546 // rax: exception
547 // rbx: exception handler
548 // rdx: throwing pc
549 __ verify_oop(rax);
550 __ jmp(rbx);
551
552 return start;
553 }
554
555 // Support for jint atomic::xchg(volatile jint* dest, jint exchange_value)
556 //
557 // Arguments :
558 // c_rarg0: exchange_value
559 // c_rarg0: dest
560 //
561 // Result:
562 // *dest <- ex, return (orig *dest)
563 address generate_atomic_xchg() {
564 StubCodeMark mark(this, "StubRoutines", "atomic_xchg");
565 address start = __ pc();
566
567 __ movl(rax, c_rarg0); // Copy to eax we need a return value anyhow
568 __ xchgl(rax, Address(c_rarg1, 0)); // automatic LOCK
569 __ ret(0);
570
571 return start;
572 }
573
574 // Support for intptr_t atomic::xchg_long(volatile jlong* dest, jlong exchange_value)
575 //
576 // Arguments :
577 // c_rarg0: exchange_value
578 // c_rarg1: dest
579 //
580 // Result:
581 // *dest <- ex, return (orig *dest)
582 address generate_atomic_xchg_long() {
583 StubCodeMark mark(this, "StubRoutines", "atomic_xchg_long");
584 address start = __ pc();
585
586 __ movptr(rax, c_rarg0); // Copy to eax we need a return value anyhow
587 __ xchgptr(rax, Address(c_rarg1, 0)); // automatic LOCK
588 __ ret(0);
589
590 return start;
591 }
592
593 // Support for jint atomic::atomic_cmpxchg(jint exchange_value, volatile jint* dest,
594 // jint compare_value)
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