[RuntimeDyld] Add support for MachO __jump_table and __pointers sections, and
SECTDIFF relocations on 32-bit x86.
This fixes several of the MCJIT regression test failures that show up on 32-bit
builds.
<rdar://problem/16886294>
llvm-svn: 208635
diff --git a/llvm/lib/Object/MachOObjectFile.cpp b/llvm/lib/Object/MachOObjectFile.cpp
index d0a56aa..fa95eca 100644
--- a/llvm/lib/Object/MachOObjectFile.cpp
+++ b/llvm/lib/Object/MachOObjectFile.cpp
@@ -1158,13 +1158,7 @@
}
basic_symbol_iterator MachOObjectFile::symbol_begin_impl() const {
- DataRefImpl DRI;
- if (!SymtabLoadCmd)
- return basic_symbol_iterator(SymbolRef(DRI, this));
-
- MachO::symtab_command Symtab = getSymtabLoadCommand();
- DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Symtab.symoff));
- return basic_symbol_iterator(SymbolRef(DRI, this));
+ return getSymbolByIndex(0);
}
basic_symbol_iterator MachOObjectFile::symbol_end_impl() const {
@@ -1182,6 +1176,20 @@
return basic_symbol_iterator(SymbolRef(DRI, this));
}
+basic_symbol_iterator MachOObjectFile::getSymbolByIndex(unsigned Index) const {
+ DataRefImpl DRI;
+ if (!SymtabLoadCmd)
+ return basic_symbol_iterator(SymbolRef(DRI, this));
+
+ MachO::symtab_command Symtab = getSymtabLoadCommand();
+ assert(Index < Symtab.nsyms && "Requested symbol index is out of range.");
+ unsigned SymbolTableEntrySize =
+ is64Bit() ? sizeof(MachO::nlist_64) : sizeof(MachO::nlist);
+ DRI.p = reinterpret_cast<uintptr_t>(getPtr(this, Symtab.symoff));
+ DRI.p += Index * SymbolTableEntrySize;
+ return basic_symbol_iterator(SymbolRef(DRI, this));
+}
+
section_iterator MachOObjectFile::section_begin() const {
DataRefImpl DRI;
return section_iterator(SectionRef(DRI, this));