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Add the options, -dylibs-used and -dylib-id to llvm-objdump used with -macho 

to print the Mach-O dynamic shared libraries used by a linked image or the
library id of a shared library.

llvm-svn: 232406
This commit is contained in:
Kevin Enderby 2015-03-16 20:08:09 +00:00
parent 928c393810
commit bc847fa4ed
4 changed files with 78 additions and 1 deletions
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6
llvm/test/tools/llvm-objdump/X86/macho-dylib.test Normal file
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@ -0,0 +1,6 @@
RUN: llvm-objdump -m -dylibs-used %p/Inputs/hello.exe.macho-x86_64 | FileCheck %s -check-prefix=USED
RUN: llvm-objdump -m -dylib-id %p/Inputs/dylibLoadKinds.macho-x86_64 | FileCheck %s -check-prefix=ID
USED: /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1197.1.1)
ID: /usr/lib/foo.dylib

69
llvm/tools/llvm-objdump/MachODump.cpp
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@ -101,6 +101,16 @@ cl::opt<bool>
cl::desc("Print the info plist section as strings for "
"Mach-O objects (requires -macho)"));
cl::opt<bool>
llvm::DylibsUsed("dylibs-used",
cl::desc("Print the shared libraries used for linked "
"Mach-O files (requires -macho)"));
cl::opt<bool>
llvm::DylibId("dylib-id",
cl::desc("Print the shared library's id for the dylib Mach-O "
"file (requires -macho)"));
cl::opt<bool>
llvm::NonVerbose("non-verbose",
cl::desc("Print the info for Mach-O objects in "
@ -516,6 +526,59 @@ static void PrintLinkOptHints(MachOObjectFile *O) {
}
}
static void PrintDylibs(MachOObjectFile *O, bool JustId) {
uint32_t LoadCommandCount = O->getHeader().ncmds;
MachOObjectFile::LoadCommandInfo Load = O->getFirstLoadCommandInfo();
for (unsigned I = 0;; ++I) {
if ((JustId && Load.C.cmd == MachO::LC_ID_DYLIB) ||
(!JustId && (Load.C.cmd == MachO::LC_ID_DYLIB ||
Load.C.cmd == MachO::LC_LOAD_DYLIB ||
Load.C.cmd == MachO::LC_LOAD_WEAK_DYLIB ||
Load.C.cmd == MachO::LC_REEXPORT_DYLIB ||
Load.C.cmd == MachO::LC_LAZY_LOAD_DYLIB ||
Load.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB))) {
MachO::dylib_command dl = O->getDylibIDLoadCommand(Load);
if (dl.dylib.name < dl.cmdsize) {
const char *p = (const char *)(Load.Ptr) + dl.dylib.name;
if (JustId)
outs() << p << "\n";
else {
outs() << "\t" << p;
outs() << " (compatibility version "
<< ((dl.dylib.compatibility_version >> 16) & 0xffff) << "."
<< ((dl.dylib.compatibility_version >> 8) & 0xff) << "."
<< (dl.dylib.compatibility_version & 0xff) << ",";
outs() << " current version "
<< ((dl.dylib.current_version >> 16) & 0xffff) << "."
<< ((dl.dylib.current_version >> 8) & 0xff) << "."
<< (dl.dylib.current_version & 0xff) << ")\n";
}
} else {
outs() << "\tBad offset (" << dl.dylib.name << ") for name of ";
if (Load.C.cmd == MachO::LC_ID_DYLIB)
outs() << "LC_ID_DYLIB ";
else if (Load.C.cmd == MachO::LC_LOAD_DYLIB)
outs() << "LC_LOAD_DYLIB ";
else if (Load.C.cmd == MachO::LC_LOAD_WEAK_DYLIB)
outs() << "LC_LOAD_WEAK_DYLIB ";
else if (Load.C.cmd == MachO::LC_LAZY_LOAD_DYLIB)
outs() << "LC_LAZY_LOAD_DYLIB ";
else if (Load.C.cmd == MachO::LC_REEXPORT_DYLIB)
outs() << "LC_REEXPORT_DYLIB ";
else if (Load.C.cmd == MachO::LC_LOAD_UPWARD_DYLIB)
outs() << "LC_LOAD_UPWARD_DYLIB ";
else
outs() << "LC_??? ";
outs() << "command " << I << "\n";
}
}
if (I == LoadCommandCount - 1)
break;
else
Load = O->getNextLoadCommandInfo(Load);
}
}
typedef DenseMap<uint64_t, StringRef> SymbolAddressMap;
static void CreateSymbolAddressMap(MachOObjectFile *O,
@ -1106,7 +1169,7 @@ static void ProcessMachO(StringRef Filename, MachOObjectFile *MachOOF,
// UniversalHeaders or ArchiveHeaders.
if (Disassemble || PrivateHeaders || ExportsTrie || Rebase || Bind ||
LazyBind || WeakBind || IndirectSymbols || DataInCode || LinkOptHints ||
DumpSections.size() != 0) {
DylibsUsed || DylibId || DumpSections.size() != 0) {
outs() << Filename;
if (!ArchiveMemberName.empty())
outs() << '(' << ArchiveMemberName << ')';
@ -1133,6 +1196,10 @@ static void ProcessMachO(StringRef Filename, MachOObjectFile *MachOOF,
DumpSectionContents(Filename, MachOOF, !NonVerbose);
if (InfoPlist)
DumpInfoPlistSectionContents(Filename, MachOOF);
if (DylibsUsed)
PrintDylibs(MachOOF, false);
if (DylibId)
PrintDylibs(MachOOF, true);
if (SymbolTable)
PrintSymbolTable(MachOOF);
if (UnwindInfo)

2
llvm/tools/llvm-objdump/llvm-objdump.cpp
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@ -908,6 +908,8 @@ int main(int argc, char **argv) {
&& !(DataInCode && MachOOpt)
&& !(LinkOptHints && MachOOpt)
&& !(InfoPlist && MachOOpt)
&& !(DylibsUsed && MachOOpt)
&& !(DylibId && MachOOpt)
&& !(DumpSections.size() != 0 && MachOOpt)) {
cl::PrintHelpMessage();
return 2;

2
llvm/tools/llvm-objdump/llvm-objdump.h
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@ -41,6 +41,8 @@ extern cl::opt<bool> IndirectSymbols;
extern cl::opt<bool> DataInCode;
extern cl::opt<bool> LinkOptHints;
extern cl::opt<bool> InfoPlist;
extern cl::opt<bool> DylibsUsed;
extern cl::opt<bool> DylibId;
extern cl::opt<bool> NonVerbose;
extern cl::opt<bool> Relocations;
extern cl::opt<bool> SectionHeaders;