[PATCH] D74824: [objdump] Fix disassembly for call/branch instructions for ELF binaries built with -ffunction-sections

Fangrui Song via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Feb 27 10:22:16 PST 2020


MaskRay added a comment.

I think symbolizing an undefined symbol as if it is defined is fine.



================
Comment at: llvm/tools/llvm-objdump/llvm-objdump.cpp:1463
+              if (Name)
+                printBranchTarget(*Name, 0 /* would expect this to be symbol addend? */);
+          }
----------------
Addends may be important for "range extension thunks with addends"

https://bugs.llvm.org/show_bug.cgi?id=40438

I think a sensible approach is to shift r_addend as if r_offset is moved to the start address of the instruction.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D74824/new/

https://reviews.llvm.org/D74824





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