[lldb-dev] Fwd: Offset Calculations for Registers on Linux x86_64

[Abhishek Aggarwal via lldb-dev]

Hello

I have a question regarding offset calculations of registers for x86_64
architecture. In file source/Plugins/Process/Utility/RegisterInfos_x86_64.h:

The macro FPR_OFFSET(reg) calculates the offset of floating point
register 'reg' with respect to 'UserArea' struct while GPR_OFFSET(reg)
calculates it wrt to 'GPR' struct. Is there any specific reason of
calculating the offsets of floating point registers wrt 'UserArea' struct
and not wrt 'FPR' struct (defined in
source/Plugins/Process/Utility/RegisterContext_x86.h) ?
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