581
582 __ bind(noLoop);
583 __ pop(rax);
584 return_op(LIR_OprFact::illegalOpr);
585
586 __ bind(haveResult);
587 // leave instruction is going to discard the TOS value
588 __ mov (rax, rcx); // result of call is in rax,
589 }
590
591
592 void LIR_Assembler::return_op(LIR_Opr result) {
593 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,");
594 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) {
595 assert(result->fpu() == 0, "result must already be on TOS");
596 }
597
598 // Pop the stack before the safepoint code
599 __ remove_frame(initial_frame_size_in_bytes());
600
601 bool result_is_oop = result->is_valid() ? result->is_oop() : false;
602
603 // Note: we do not need to round double result; float result has the right precision
604 // the poll sets the condition code, but no data registers
605 AddressLiteral polling_page(os::get_polling_page(), relocInfo::poll_return_type);
606
607 if (Assembler::is_polling_page_far()) {
608 __ lea(rscratch1, polling_page);
609 __ relocate(relocInfo::poll_return_type);
610 __ testl(rax, Address(rscratch1, 0));
611 } else {
612 __ testl(rax, polling_page);
613 }
614 __ ret(0);
615 }
616
617
618 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) {
619 AddressLiteral polling_page(os::get_polling_page(), relocInfo::poll_type);
620 guarantee(info != NULL, "Shouldn't be NULL");
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581
582 __ bind(noLoop);
583 __ pop(rax);
584 return_op(LIR_OprFact::illegalOpr);
585
586 __ bind(haveResult);
587 // leave instruction is going to discard the TOS value
588 __ mov (rax, rcx); // result of call is in rax,
589 }
590
591
592 void LIR_Assembler::return_op(LIR_Opr result) {
593 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,");
594 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) {
595 assert(result->fpu() == 0, "result must already be on TOS");
596 }
597
598 // Pop the stack before the safepoint code
599 __ remove_frame(initial_frame_size_in_bytes());
600
601 if (StackReservedPages > 0 && compilation()->has_reserved_stack_access()) {
602 __ reserved_stack_check();
603 }
604
605 bool result_is_oop = result->is_valid() ? result->is_oop() : false;
606
607 // Note: we do not need to round double result; float result has the right precision
608 // the poll sets the condition code, but no data registers
609 AddressLiteral polling_page(os::get_polling_page(), relocInfo::poll_return_type);
610
611 if (Assembler::is_polling_page_far()) {
612 __ lea(rscratch1, polling_page);
613 __ relocate(relocInfo::poll_return_type);
614 __ testl(rax, Address(rscratch1, 0));
615 } else {
616 __ testl(rax, polling_page);
617 }
618 __ ret(0);
619 }
620
621
622 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) {
623 AddressLiteral polling_page(os::get_polling_page(), relocInfo::poll_type);
624 guarantee(info != NULL, "Shouldn't be NULL");
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