[PATCH] D22683: [ELF] Symbol assignment within input section list

Rui Ueyama via llvm-commits llvm-commits at lists.llvm.org
Tue Jul 26 13:41:08 PDT 2016


ruiu added inline comments.

================
Comment at: ELF/LinkerScript.cpp:120-121
@@ -122,1 +119,4 @@
+    // .foo : { *(.foo.*) end_foo = .; }
+    SectionOffset = alignTo(SectionOffset, C->Alignment);
+    SectionOffset += C->getSize();
   };
----------------
evgeny777 wrote:
> ruiu wrote:
> > This offset computation is not accurate. On MIPS or ARM, input sections may have additional pieces of data, or thunks, at their ends. Thunks are added to input sections in Writetr::finalizeSections, so in this function we don't know the exact size of input sections. So this is computing offsets too early.
> Thanks for pointing this out. I suggest calculating offsets in addScriptedSymbols than. What's your opinion?
If you can do it, it would work, but I"m not sure how you are going to do it.


https://reviews.llvm.org/D22683





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