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Bug 7954 – x86_64 Windows fibers do not save nonvolatile XMM registers

Status: RESOLVED
Resolution: FIXED
Severity: normal
Priority: P2
Component: druntime
Product: D
Version: D2
Platform: x86_64
OS: Windows
Creation time: 2012-04-20T16:38:00Z
Last change time: 2014-05-27T18:42:12Z
Keywords: pull
Assigned to: nobody
Creator: j.patrick.ernst

Comments

Comment #0 by j.patrick.ernst — 2012-04-20T16:38:15Z

According to MSDN (http://msdn.microsoft.com/en-us/library/9z1stfyw.aspx), the XMM6-XMM15 registers are nonvolatile on x64 Windows. The current implementation of core.thread.Fiber for this platform does not preserve them.

Comment #1 by turkeyman — 2012-11-14T09:09:52Z

(In reply to comment #0) > According to MSDN (http://msdn.microsoft.com/en-us/library/9z1stfyw.aspx), the > XMM6-XMM15 registers are nonvolatile on x64 Windows. The current implementation > of core.thread.Fiber for this platform does not preserve them. Are you using the unreleased DMD-win64 (2.061)? I'm finding it just crashes and doesn't work at all.

Comment #2 by jblume — 2014-05-26T13:46:05Z

https://github.com/D-Programming-Language/druntime/pull/810

Comment #3 by github-bugzilla — 2014-05-27T18:42:11Z

Commits pushed to master at https://github.com/D-Programming-Language/druntime https://github.com/D-Programming-Language/druntime/commit/9ed3fbd973a20425337c6e16f8a622b95b485c01 fix Issue 7954 - x86_64 Windows fibers do not save nonvolatile XMM registers https://github.com/D-Programming-Language/druntime/commit/4189f4d20895fc48903b95ccfc326e8ac68ee9a5 Merge pull request #810 from jblume/fibers-xmm fix Issue 7954 - x86_64 Windows fibers do not save nonvolatile XMM registers