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33177b3e92
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Peter Collingbourne 33177b3e92 llvm-objcopy: Set sh_link to 0 on unrecognized symtab-linked sections. 
Per discussion on the generic-abi mailing list:
https://groups.google.com/forum/#!topic/generic-abi/MPr8TVtnVn4

An object file manipulation tool must either write out a symbol
table with the same number of entries as the original symbol table
and in the same order, or if this is impossible, refuse to operate
on the object file if it has unrecognized sections that are linked
to the symtab section. However, existing tools (namely GNU strip,
GNU objcopy and ld.{bfd,gold,lld} -r) do not comply with this at
present: they change symbol table indexes and set sh_link to 0 on
the unrecognized symtab-linked sections.

We intend to use the latter as a (temporary) signal that a tool has
operated on a proposed new symtab-linked section and invalidated the
symbol table indexes. However, llvm-objcopy currently keeps sh_link
pointing to the new symtab section. This patch changes llvm-objcopy
to set sh_link to 0 to match the behaviour of the other tools.

Differential Revision: https://reviews.llvm.org/D47404

llvm-svn: 333581
2018-05-30 19:30:39 +00:00
..
bugpoint Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
bugpoint-passes Remove redundant includes from tools. 2017-12-13 21:31:10 +00:00
dsymutil [dsymutil] Escape HTML special characters in plist. 2018-05-30 17:47:11 +00:00
gold LTO: Replace split dwarf implementation that uses objcopy with one that uses direct emission. 2018-05-21 20:26:49 +00:00
llc CodeGen: Add a dwo output file argument to addPassesToEmitFile and hook it up to dwo output. 2018-05-21 20:16:41 +00:00
lli [ORC] Update JITCompileCallbackManager to support multi-threaded code. 2018-05-30 01:57:45 +00:00
llvm-ar [llvm-ar] Make PositionalArgs static. 2018-05-14 05:56:48 +00:00
llvm-as Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-as-fuzzer make add_llvm_fuzzer calls slightly more consisten with other cmake 2018-05-11 17:58:52 +00:00
llvm-bcanalyzer [bcanalyzer] Recognize more stream types 2018-04-21 23:52:04 +00:00
llvm-c-test [LLVM-C] Add DIBuilder Bindings For ObjC Classes 2018-05-21 16:27:35 +00:00
llvm-cat Pass a reference to a module to the bitcode writer. 2018-02-14 19:11:32 +00:00
llvm-cfi-verify Make llvm-cfi-verify CMakeLists.txt formatting more consistent with the rest of LLVM. 2018-05-09 01:07:02 +00:00
llvm-config Remove \brief commands from doxygen comments. 2018-05-01 15:54:18 +00:00
llvm-cov [Coverage] Update CSS to make HTML reports copy-paste friendly. 2018-05-22 22:40:14 +00:00
llvm-cvtres [llvm-cvtres] Allow parameters preceded by '-' in addition to '/' 2018-05-02 21:15:13 +00:00
llvm-cxxdump Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-cxxfilt Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-demangle-fuzzer make add_llvm_fuzzer calls slightly more consisten with other cmake 2018-05-11 17:58:52 +00:00
llvm-diff Let llvm-diff correctly deal with Undef/ConstantAggregateZero/ConstantVector/IndirectBr 2018-04-12 21:28:04 +00:00
llvm-dis [ThinLTO] Print module summary index to assembly 2018-05-26 02:34:13 +00:00
llvm-dwarfdump [Support] Add color cl category. 2018-05-24 11:36:57 +00:00
llvm-dwp MC: Change the streamer ctors to take an object writer instead of a stream. NFCI. 2018-05-18 18:26:45 +00:00
llvm-exegesis [llvm-exegesis] Analysis: Show value extents. 2018-05-24 12:41:02 +00:00
llvm-extract Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-go Update some code.google.com links 2017-11-13 23:47:58 +00:00
llvm-isel-fuzzer CodeGen: Add a dwo output file argument to addPassesToEmitFile and hook it up to dwo output. 2018-05-21 20:16:41 +00:00
llvm-jitlistener Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-link [llvm-link] Use WithColor for printing errors 2018-04-18 14:41:47 +00:00
llvm-lto [ThinLTO] Make llvm-lto module ID numbering consistent with linkers 2018-05-16 14:58:14 +00:00
llvm-lto2 [LTO] Allow pass remarks with hotness to be set when emitting to stderr 2018-05-04 23:59:34 +00:00
llvm-mc MC: Introduce an ELF dwo object writer and teach llvm-mc about it. 2018-05-21 19:44:54 +00:00
llvm-mc-assemble-fuzzer make add_llvm_fuzzer calls slightly more consisten with other cmake 2018-05-11 17:58:52 +00:00
llvm-mc-disassemble-fuzzer make add_llvm_fuzzer calls slightly more consisten with other cmake 2018-05-11 17:58:52 +00:00
llvm-mca [llvm-mca] Update the header's guard name. NFC. 2018-05-25 18:45:43 +00:00
llvm-modextract Pass a reference to a module to the bitcode writer. 2018-02-14 19:11:32 +00:00
llvm-mt Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-nm Fix debug build by adding missing dependencies on libBinaryFormat 2018-05-15 00:46:43 +00:00
llvm-objcopy llvm-objcopy: Set sh_link to 0 on unrecognized symtab-linked sections. 2018-05-30 19:30:39 +00:00
llvm-objdump Fix debug build by adding missing dependencies on libBinaryFormat 2018-05-15 00:46:43 +00:00
llvm-opt-fuzzer make add_llvm_fuzzer calls slightly more consisten with other cmake 2018-05-11 17:58:52 +00:00
llvm-opt-report Remove \brief commands from doxygen comments. 2018-05-01 15:54:18 +00:00
llvm-pdbutil [llvm-pdbutil] Dump struct/class/union sizes in the minimal dump format 2018-05-17 18:33:42 +00:00
llvm-profdata [llvm-profdata] Use WithColor for printing errors 2018-04-18 14:42:33 +00:00
llvm-rc [llvm-rc] Add support for the optional CLASS statement for dialogs 2018-05-15 19:21:28 +00:00
llvm-readobj Reverted r333424 as it broke multiple build bots and left unfixed for a long time 2018-05-30 18:51:08 +00:00
llvm-rtdyld Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-shlib [CMake] Support building shared library for Fuchsia 2018-05-17 03:39:03 +00:00
llvm-size Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-special-case-list-fuzzer make add_llvm_fuzzer calls slightly more consisten with other cmake 2018-05-11 17:58:52 +00:00
llvm-split Pass a reference to a module to the bitcode writer. 2018-02-14 19:11:32 +00:00
llvm-stress [Support] Rename tool_output_file to ToolOutputFile, NFC 2017-09-23 01:03:17 +00:00
llvm-strings Define InitLLVM to do common initialization all at once. 2018-04-13 18:26:06 +00:00
llvm-symbolizer [llvm-symbolizer] Simplify 2018-05-26 02:29:14 +00:00
llvm-xray Support: Simplify endian stream interface. NFCI. 2018-05-18 19:46:24 +00:00
lto s/LLVM_ON_WIN32/_WIN32/, llvm 2018-04-29 00:45:03 +00:00
msbuild Create msbuild only when using MSVC 2017-03-16 20:24:14 +00:00
obj2yaml Fix debug build by adding missing dependencies on libBinaryFormat 2018-05-15 00:46:43 +00:00
opt [Debugify] Set a DI version module flag for llc compatibility 2018-05-24 23:00:23 +00:00
opt-viewer [opt-viewer] Kill parser processes before moving onto rendering 2018-02-26 21:15:51 +00:00
sancov Rename sancov.cc to sancov.cpp 2018-04-25 18:06:23 +00:00
sanstats Fix broken links to the Itanium CXX ABI 2017-09-12 00:19:11 +00:00
verify-uselistorder Rename DEBUG macro to LLVM_DEBUG. 2018-05-14 12:53:11 +00:00
xcode-toolchain [llvm] Add stripped installation targets 2017-11-30 21:48:26 +00:00
yaml2obj Remove \brief commands from doxygen comments. 2018-05-01 15:54:18 +00:00
CMakeLists.txt Fixup r271533, or check-clang didn't find llvm-lto as the target. 2016-06-02 20:39:24 +00:00
LLVMBuild.txt Re-land r329156 "Add llvm-exegesis tool." 2018-04-04 11:37:06 +00:00