Integrated: 8374744: Enable dumping of APX EGPRs (R16–R31) in JVM fatal error logs

Fri Jan 30 17:54:27 UTC 2026

On Wed, 7 Jan 2026 20:28:14 GMT, Srinivas Vamsi Parasa <sparasa at openjdk.org> wrote:

> The goal of this PR is to add support for printing the values of APX extended general-purpose registers (EGPRs, R16-R31) in hs_err_pid* crash logs on x86 platforms with APX support. The implementation detects APX support at runtime and attempts to dump the additional registers when available, improving post-mortem debugging capabilities.

This pull request has now been integrated.

Changeset: 3a4277db
Author:    Srinivas Vamsi Parasa <sparasa at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/3a4277db74f889d0b8350145515c1a1f4e399ec8
Stats:     105 lines in 3 files changed: 83 ins; 1 del; 21 mod

8374744: Enable dumping of APX EGPRs (R16–R31) in JVM fatal error logs

Reviewed-by: sviswanathan, dholmes

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PR: https://git.openjdk.org/jdk/pull/29098