[all-commits] [llvm/llvm-project] 5ee2de: [lldb][AArch64][Linux] Add Floating Point Mode Reg...

[David Spickett via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5ee2deac0c3b85deaeb0031b4030db99d266abdc
      https://github.com/llvm/llvm-project/commit/5ee2deac0c3b85deaeb0031b4030db99d266abdc
  Author: David Spickett <david.spickett at linaro.org>
  Date:   2024-09-25 (Wed, 25 Sep 2024)

  Changed paths:
    M lldb/packages/Python/lldbsuite/test/lldbtest.py
    M lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp
    M lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.h
    M lldb/source/Plugins/Process/Utility/RegisterContextPOSIX_arm64.cpp
    M lldb/source/Plugins/Process/Utility/RegisterContextPOSIX_arm64.h
    M lldb/source/Plugins/Process/Utility/RegisterInfoPOSIX_arm64.cpp
    M lldb/source/Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h
    A lldb/test/API/linux/aarch64/fpmr/Makefile
    A lldb/test/API/linux/aarch64/fpmr/TestAArch64LinuxFPMR.py
    A lldb/test/API/linux/aarch64/fpmr/main.c

  Log Message:
  -----------
  [lldb][AArch64][Linux] Add Floating Point Mode Register (#106695)

Otherwise known as FEAT_FPMR. This register controls the behaviour of
floating point operations.

https://developer.arm.com/documentation/ddi0601/2024-06/AArch64-Registers/FPMR--Floating-point-Mode-Register

As the current floating point register contexts are fixed size, this has
been placed in a new set. Linux kernel patches have landed already, so
you can cross check with those.

To simplify testing we're not going to do any floating point operations,
just read and write from the program and debugger to make sure each sees
the other's values correctly.



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