On Thu, 7 Sep 2023 21:31:24 GMT, Chris Plummer <cjplum...@openjdk.org> wrote:
>> This PR fixes a specific problem caused by using r29/rfp to unwind Java >> code. For some time we have treated r29 as a callee-saved scratch register, >> and it is freely used by C2-generated code. Therefore, any code in SA that >> uses getFP() in a compiled frame is very likely to come to grief. >> >> I believe this is the root cause of 8313800, but it's very hard to prove >> that because because it's something of an intermittent fault. > > src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/runtime/aarch64/AARCH64Frame.java > line 331: > >> 329: >> 330: >> //------------------------------------------------------------------------------ >> 331: // frame::adjust_unextended_sp > > This is just repeating the comment below. Thanks. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/15624#discussion_r1319600134
