PING: Could you review it?
JBS: https://bugs.openjdk.java.net/browse/JDK-8234624
webrev: http://cr.openjdk.java.net/~ysuenaga/JDK-8234624/webrev.01/
This bug is targeted to JDK 14.
Thanks,
Yasumasa
On 2019/11/28 21:39, Yasumasa Suenaga wrote:
Hi,
I refactored LinuxAMD64CFrame.java . It works fine in serviceability/sa tests
and
all tests on submit repo
(mach5-one-ysuenaga-JDK-8234624-2-20191128-0928-7059923).
Could you review new webrev?
http://cr.openjdk.java.net/~ysuenaga/JDK-8234624/webrev.01/
The diff from previous webrev is here:
http://hg.openjdk.java.net/jdk/submit/rev/4bc47efbc90b
Thanks,
Yasumasa
On 2019/11/25 14:08, Yasumasa Suenaga wrote:
Hi all,
Please review this change:
JBS: https://bugs.openjdk.java.net/browse/JDK-8234624
webrev: http://cr.openjdk.java.net/~ysuenaga/JDK-8234624/webrev.00/
According to 2.7 Stack Unwind Algorithm in System V Application Binary
Interface AMD64
Architecture Processor Supplement [1], we need to use DWARF in .eh_frame or
.debug_frame
for stack unwinding.
As JDK-8022183 said, omit-frame-pointer is enabled by default since GCC 4.6, so
system
library (e.g. libc) might be compiled with this feature.
However `jhsdb jstack --mixed` does not do so, it uses base pointer register
(RBP).
So it might be lack of stack frames.
I guess JDK-8219201 is caused by same issue.
Thanks,
Yasumasa
[1]
https://software.intel.com/sites/default/files/article/402129/mpx-linux64-abi.pdf
