[all-commits] [llvm/llvm-project] d96cb5: [lldb] [Process/NetBSD] Use XStateRegSet for all F...

[Michał Górny via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: d96cb52830fd7109cead60956a9b108935988e5c
      https://github.com/llvm/llvm-project/commit/d96cb52830fd7109cead60956a9b108935988e5c
  Author: Michał Górny <mgorny at moritz.systems>
  Date:   2020-10-24 (Sat, 24 Oct 2020)

  Changed paths:
    M lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.cpp
    M lldb/source/Plugins/Process/NetBSD/NativeRegisterContextNetBSD_x86_64.h

  Log Message:
  -----------
  [lldb] [Process/NetBSD] Use XStateRegSet for all FPU registers

Unify the x86 regset API to use XStateRegSet for all FPU registers,
therefore eliminating the legacy API based on FPRegSet.  This makes
the code a little bit simpler but most notably, it provides future
compatibility for register caching.

Since the NetBSD kernel takes care of providing compatibility with
pre-XSAVE processors, PT_{G,S}ETXSTATE can be used on systems supporting
only FXSAVE or even plain FSAVE (and unlike PT_{G,S}ETXMMREGS, it
clearly indicates that XMM registers are not supported).

Differential Revision: https://reviews.llvm.org/D90034