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Add a funciton to get the segment name of a section.

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On MachO, sections also have segment names. When a tool looking at a .o file
prints a segment name, this is what they mean. In reality, a .o has only one,
anonymous, segment.

This patch adds a MachO only function to fetch that segment name. I named it
getSectionFinalSegmentName since the main use for the name seems to be informing
the linker with segment this section should go to.

The patch also changes MachOObjectFile::getSectionName to return just the
section name instead of computing SegmentName,SectionName.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170095 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2012-12-13 04:07:18 +00:00
parent 99c86c72b2
commit e3ec87a6f7
4 changed files with 49 additions and 15 deletions
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8
tools/llvm-objdump/MachODump.cpp
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@@ -334,9 +334,15 @@ void llvm::DisassembleInputMachO(StringRef Filename) {
for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
StringRef SectName;
if (Sections[SectIdx].getName(SectName) ||
SectName.compare("__TEXT,__text"))
SectName != "__text")
continue; // Skip non-text sections
StringRef SegmentName;
DataRefImpl DR = Sections[SectIdx].getRawDataRefImpl();
if (MachOOF->getSectionFinalSegmentName(DR, SegmentName) ||
SegmentName != "__TEXT")
continue;
// Insert the functions from the function starts segment into our map.
uint64_t VMAddr;
Sections[SectIdx].getAddress(VMAddr);