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llvm-nm should show a symbol type of T for symbols in the (__TEXT_EXEC,__text) section.

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When a the Apple link editor builds a kext bundle file type and the 
value of the -miphoneos-version-min argument is significantly current
(like 11.0) then the (__TEXT,__text) section is changed to the
(__TEXT_EXEC,__text) section.  So it would be nice for llvm-nm to
show symbols in that section with a type of T instead of the generic
type of S for some section other than text, data, etc.

rdar://36262205

llvm-svn: 323836
This commit is contained in:
Kevin Enderby 2018-01-31 00:00:41 +00:00
parent 8b0cbc46f7
commit d55cebfaec
4 changed files with 10 additions and 0 deletions
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BIN
test/tools/llvm-nm/AArch64/Inputs/kextbundle.macho-aarch64 Executable file
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2
test/tools/llvm-nm/AArch64/lit.local.cfg Normal file
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@ -0,0 +1,2 @@
if not 'AArch64' in config.root.targets:
config.unsupported = True

4
test/tools/llvm-nm/AArch64/macho-kextbundle.test Normal file
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@ -0,0 +1,4 @@
RUN: llvm-nm %p/Inputs/kextbundle.macho-aarch64 | FileCheck %s
CHECK: 0000000000004014 s _bar.stub
CHECK: 0000000000004000 T _foo

4
tools/llvm-nm/llvm-nm.cpp
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@ -1004,6 +1004,10 @@ static char getSymbolNMTypeChar(MachOObjectFile &Obj, basic_symbol_iterator I) {
StringRef SectionName;
Obj.getSectionName(Ref, SectionName);
StringRef SegmentName = Obj.getSectionFinalSegmentName(Ref);
if (Obj.is64Bit() &&
Obj.getHeader64().filetype == MachO::MH_KEXT_BUNDLE &&
SegmentName == "__TEXT_EXEC" && SectionName == "__text")
return 't';
if (SegmentName == "__TEXT" && SectionName == "__text")
return 't';
if (SegmentName == "__DATA" && SectionName == "__data")