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comparison src/cpu/x86/vm/sharedRuntime_x86_64.cpp @ 17780:606acabe7b5c

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8031320: Use Intel RTM instructions for locks Summary: Use RTM for inflated locks and stack locks. Reviewed-by: iveresov, twisti, roland, dcubed
author kvn
date Thu, 20 Mar 2014 17:49:27 -0700
parents 55fb97c4c58d
children 62c54fcc0a35
comparison
equal deleted inserted replaced
17778:a48e16541e6b 17780:606acabe7b5c
2008 __ subptr(rsp, stack_size - 2*wordSize); 2008 __ subptr(rsp, stack_size - 2*wordSize);
2009 2009
2010 // Frame is now completed as far as size and linkage. 2010 // Frame is now completed as far as size and linkage.
2011 int frame_complete = ((intptr_t)__ pc()) - start; 2011 int frame_complete = ((intptr_t)__ pc()) - start;
2012 2012
2013 if (UseRTMLocking) {
2014 // Abort RTM transaction before calling JNI
2015 // because critical section will be large and will be
2016 // aborted anyway. Also nmethod could be deoptimized.
2017 __ xabort(0);
2018 }
2019
2013 #ifdef ASSERT 2020 #ifdef ASSERT
2014 { 2021 {
2015 Label L; 2022 Label L;
2016 __ mov(rax, rsp); 2023 __ mov(rax, rsp);
2017 __ andptr(rax, -16); // must be 16 byte boundary (see amd64 ABI) 2024 __ andptr(rax, -16); // must be 16 byte boundary (see amd64 ABI)
3608 3615
3609 assert(SimpleRuntimeFrame::framesize % 4 == 0, "sp not 16-byte aligned"); 3616 assert(SimpleRuntimeFrame::framesize % 4 == 0, "sp not 16-byte aligned");
3610 3617
3611 address start = __ pc(); 3618 address start = __ pc();
3612 3619
3620 if (UseRTMLocking) {
3621 // Abort RTM transaction before possible nmethod deoptimization.
3622 __ xabort(0);
3623 }
3624
3613 // Push self-frame. We get here with a return address on the 3625 // Push self-frame. We get here with a return address on the
3614 // stack, so rsp is 8-byte aligned until we allocate our frame. 3626 // stack, so rsp is 8-byte aligned until we allocate our frame.
3615 __ subptr(rsp, SimpleRuntimeFrame::return_off << LogBytesPerInt); // Epilog! 3627 __ subptr(rsp, SimpleRuntimeFrame::return_off << LogBytesPerInt); // Epilog!
3616 3628
3617 // No callee saved registers. rbp is assumed implicitly saved 3629 // No callee saved registers. rbp is assumed implicitly saved
3787 address start = __ pc(); 3799 address start = __ pc();
3788 address call_pc = NULL; 3800 address call_pc = NULL;
3789 int frame_size_in_words; 3801 int frame_size_in_words;
3790 bool cause_return = (poll_type == POLL_AT_RETURN); 3802 bool cause_return = (poll_type == POLL_AT_RETURN);
3791 bool save_vectors = (poll_type == POLL_AT_VECTOR_LOOP); 3803 bool save_vectors = (poll_type == POLL_AT_VECTOR_LOOP);
3804
3805 if (UseRTMLocking) {
3806 // Abort RTM transaction before calling runtime
3807 // because critical section will be large and will be
3808 // aborted anyway. Also nmethod could be deoptimized.
3809 __ xabort(0);
3810 }
3792 3811
3793 // Make room for return address (or push it again) 3812 // Make room for return address (or push it again)
3794 if (!cause_return) { 3813 if (!cause_return) {
3795 __ push(rbx); 3814 __ push(rbx);
3796 } 3815 }