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[RuntimeDyld] Add support for MachO __jump_table and __pointers sections, and

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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>



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208635 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2014-05-12 21:39:59 +00:00
parent 6124834147
commit b572bc1ccf
8 changed files with 245 additions and 23 deletions
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22
lib/Object/MachOObjectFile.cpp
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@@ -1158,13 +1158,7 @@ error_code MachOObjectFile::getLibraryPath(DataRefImpl LibData,
}
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 @@ basic_symbol_iterator MachOObjectFile::symbol_end_impl() const {
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));