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Add ObjectFile::getLoadName() for retrieving the soname/installname of a shared object.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151845 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Meyer
2012-03-01 22:19:54 +00:00
parent b0578512c7
commit 97f7787bfb
8 changed files with 77 additions and 1 deletions
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33
include/llvm/Object/ELF.h
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@@ -369,6 +369,9 @@ private:
DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable;
const Elf_Shdr *dot_dynamic_sec; // .dynamic
// Pointer to SONAME entry in dynamic string table
// This is set the first time getLoadName is called.
mutable const char *dt_soname;
/// @brief Map sections to an array of relocation sections that reference
/// them sorted by section index.
@@ -471,6 +474,7 @@ public:
virtual uint8_t getBytesInAddress() const;
virtual StringRef getFileFormatName() const;
virtual unsigned getArch() const;
virtual StringRef getLoadName() const;
uint64_t getNumSections() const;
uint64_t getStringTableIndex() const;
@@ -1259,7 +1263,8 @@ ELFObjectFile<target_endianness, is64Bits>::ELFObjectFile(MemoryBuffer *Object
, dot_shstrtab_sec(0)
, dot_strtab_sec(0)
, dot_dynstr_sec(0)
, dot_dynamic_sec(0) {
, dot_dynamic_sec(0)
, dt_soname(0) {
const uint64_t FileSize = Data->getBufferSize();
@@ -1485,6 +1490,32 @@ error_code ELFObjectFile<target_endianness, is64Bits>
return object_error::success;
}
template<support::endianness target_endianness, bool is64Bits>
StringRef
ELFObjectFile<target_endianness, is64Bits>::getLoadName() const {
if (!dt_soname) {
// Find the DT_SONAME entry
dyn_iterator it = begin_dynamic_table();
dyn_iterator ie = end_dynamic_table();
error_code ec;
while (it != ie) {
if (it->getTag() == ELF::DT_SONAME)
break;
it.increment(ec);
if (ec)
report_fatal_error("dynamic table iteration failed");
}
if (it != ie) {
if (dot_dynstr_sec == NULL)
report_fatal_error("Dynamic string table is missing");
dt_soname = getString(dot_dynstr_sec, it->getVal());
} else {
dt_soname = "";
}
}
return dt_soname;
}
template<support::endianness target_endianness, bool is64Bits>
library_iterator ELFObjectFile<target_endianness, is64Bits>
::begin_libraries_needed() const {