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

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This reverts commit r170095 since it appears to be breaking the bots.

llvm-svn: 170105
This commit is contained in:
Eric Christopher 2012-12-13 06:36:18 +00:00
parent bbd72d1bcb
commit f555863a16
4 changed files with 14 additions and 48 deletions
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5
include/llvm/Object/MachO.h
View File

@ -44,11 +44,6 @@ public:
virtual unsigned getArch() const;
virtual StringRef getLoadName() const;
// In a MachO file, sections have a segment name. This is used in the .o
// files. They have a single segment, but this field specifies which segment
// a section should be put in in the final object.
error_code getSectionFinalSegmentName(DataRefImpl Sec, StringRef &Res) const;
MachOObject *getObject() { return MachOObj.get(); }
static inline bool classof(const Binary *v) {

35
lib/Object/MachOObjectFile.cpp
View File

@ -473,43 +473,28 @@ static bool is64BitLoadCommand(const MachOObject *MachOObj, DataRefImpl DRI) {
return false;
}
static StringRef parseSegmentOrSectionName(const char *P) {
if (P[15] == 0)
// Null terminated.
return P;
// Not null terminated, so this is a 16 char string.
return StringRef(P, 16);
}
error_code MachOObjectFile::getSectionName(DataRefImpl DRI,
StringRef &Result) const {
// FIXME: thread safety.
static char result[34];
if (is64BitLoadCommand(MachOObj.get(), DRI)) {
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
InMemoryStruct<macho::Section64> Sect;
MachOObj->ReadSection64(LCI, DRI.d.b, Sect);
Result = parseSegmentOrSectionName(Sect->Name);
strcpy(result, Sect->SegmentName);
strcat(result, ",");
strcat(result, Sect->Name);
} else {
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
InMemoryStruct<macho::Section> Sect;
MachOObj->ReadSection(LCI, DRI.d.b, Sect);
Result = parseSegmentOrSectionName(Sect->Name);
}
return object_error::success;
}
error_code MachOObjectFile::getSectionFinalSegmentName(DataRefImpl Sec,
StringRef &Res) const {
if (is64BitLoadCommand(MachOObj.get(), Sec)) {
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(Sec.d.a);
InMemoryStruct<macho::Section64> Sect;
MachOObj->ReadSection64(LCI, Sec.d.b, Sect);
Res = parseSegmentOrSectionName(Sect->SegmentName);
} else {
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(Sec.d.a);
InMemoryStruct<macho::Section> Sect;
MachOObj->ReadSection(LCI, Sec.d.b, Sect);
Res = parseSegmentOrSectionName(Sect->SegmentName);
strcpy(result, Sect->SegmentName);
strcat(result, ",");
strcat(result, Sect->Name);
}
Result = StringRef(result);
return object_error::success;
}

8
tools/llvm-objdump/MachODump.cpp
View File

@ -334,15 +334,9 @@ void llvm::DisassembleInputMachO(StringRef Filename) {
for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
StringRef SectName;
if (Sections[SectIdx].getName(SectName) ||
SectName != "__text")
SectName.compare("__TEXT,__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);

14
tools/llvm-objdump/llvm-objdump.cpp
View File

@ -28,7 +28,6 @@
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/COFF.h"
#include "llvm/Object/MachO.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
@ -73,9 +72,9 @@ static cl::opt<bool>
SymbolTable("t", cl::desc("Display the symbol table"));
static cl::opt<bool>
MachOOpt("macho", cl::desc("Use MachO specific object file parser"));
MachO("macho", cl::desc("Use MachO specific object file parser"));
static cl::alias
MachOm("m", cl::desc("Alias for --macho"), cl::aliasopt(MachOOpt));
MachOm("m", cl::desc("Alias for --macho"), cl::aliasopt(MachO));
cl::opt<std::string>
llvm::TripleName("triple", cl::desc("Target triple to disassemble for, "
@ -568,13 +567,6 @@ static void PrintSymbolTable(const ObjectFile *o) {
else if (Section == o->end_sections())
outs() << "*UND*";
else {
if (const MachOObjectFile *MachO = dyn_cast<const MachOObjectFile>(o)) {
StringRef SegmentName;
DataRefImpl DR = Section->getRawDataRefImpl();
if (error(MachO->getSectionFinalSegmentName(DR, SegmentName)))
SegmentName = "";
outs() << SegmentName << ",";
}
StringRef SectionName;
if (error(Section->getName(SectionName)))
SectionName = "";
@ -648,7 +640,7 @@ static void DumpInput(StringRef file) {
return;
}
if (MachOOpt && Disassemble) {
if (MachO && Disassemble) {
DisassembleInputMachO(file);
return;
}