[Lldb-commits] [PATCH] D20357: [LLDB][MIPS] Fix FPU Size Based on Dynamic FR/FRE bit

Pavel Labath via lldb-commits lldb-commits at lists.llvm.org
Fri Jul 1 06:05:23 PDT 2016


labath added a subscriber: labath.

================
Comment at: source/Plugins/Process/Linux/NativeRegisterContextLinux_mips64.cpp:497-505
@@ +496,11 @@
+         {
+            bool fre;
+            bool fr1;
+            IsFR1_FRE (fr1, fre);
+
+            // fr1  fre fpu_reg_size
+            // 1    0   64
+            // 1    1   32
+            // 0    0   32
+            reg_info->byte_size = (fr1 ^ fre) ? 8 : 4;
+         }
----------------
nitesh.jain wrote:
> clayborg wrote:
> > If we don't add anything to RegisterInfo, then this code is fine. Else we will need to check "reg_info->dynamic_size_dwarf_expr_bytes" and evaluate the DWARF expression to get the size.
> If Dwarf expression need to be evaluate at server side, then we need to add one more function in DWARFExpression::Evaluate to take NativeRegisterContext has a parameter. So should I add one more functionality in it ?
> 
> Thanks
Please be careful about pulling more code to lldb-server, as it may cause the size to blow up due to transitive dependencies. If you're going to do that, please check the impact on the binary size, but I think it would be best to keep dwarf expression evaluation out of the server altogether.


Repository:
  rL LLVM

http://reviews.llvm.org/D20357





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