Object: avoid undefined behavior when bounds-checking

Don't form an out of bounds pointer just to test if it
would be out of bounds.

Also perform the same bounds checking for all the previous
mappe

Object: avoid undefined behavior when bounds-checking

Don't form an out of bounds pointer just to test if it
would be out of bounds.

Also perform the same bounds checking for all the previous
mapped structures.

llvm-svn: 149750

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Sink assert-only variables into the asserts

llvm-svn: 148849

Silence warnings in -asserts build

llvm-svn: 148715

Basic runtime dynamic loading capabilities added to ELFObjectFile, implemented
in a subclass named DyldELFObject. This class supports rebasing the object file
it represents by re-mapping section addr

Basic runtime dynamic loading capabilities added to ELFObjectFile, implemented
in a subclass named DyldELFObject. This class supports rebasing the object file
it represents by re-mapping section addresses to the actual memory addresses
the object was placed in. This is required for MC-JIT implementation on ELF with
debugging support.

Patch reviewed on llvm-commits.

Developed together with Ashok Thirumurthi and Andrew Kaylor.

llvm-svn: 148653

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Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObject

Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObjectFile and COFFObjectFile.
- added getRelocationOffset()
- fixed MachOObjectFile::getSymbolSize()
- fixed MachOObjectFile::getSymbolSection()
- fixed MachOObjectFile::getSymbolOffset() for symbols without section data.

llvm-svn: 145408

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Revert r145180 as it is causing test failures on all the bots.

Original commit message:
Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getS

Revert r145180 as it is causing test failures on all the bots.

Original commit message:
Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObjectFile and COFFObjectFile.
- added getRelocationOffset()
- fixed MachOObjectFile::getSymbolSize()
- fixed MachOObjectFile::getSymbolSection()
- fixed MachOObjectFile::getSymbolOffset() for symbols without section data.

llvm-svn: 145182

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Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObject

Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObjectFile and COFFObjectFile.
- added getRelocationOffset()
- fixed MachOObjectFile::getSymbolSize()
- fixed MachOObjectFile::getSymbolSection()
- fixed MachOObjectFile::getSymbolOffset() for symbols without section data.

llvm-svn: 145180

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Expand relocation type field to 64 bits. MachO scattered relocations require 33 bits of type info.

llvm-svn: 143032

Object: Add some types to SymbolRef::Type.

Some of these can be true at the same time and there are a lot to add,
so this should be turned into a bitfield. Some of the other accessors
should probabl

Object: Add some types to SymbolRef::Type.

Some of these can be true at the same time and there are a lot to add,
so this should be turned into a bitfield. Some of the other accessors
should probably be folded into this.

llvm-svn: 142318

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Object: Add isSymbolAbsolute and getSymbolSection.

llvm-svn: 142317

Object: Add isSymbolWeak.

llvm-svn: 142316

Object: Implement casting for concrete classes.

llvm-svn: 142314

Object: Fix redundant name.

llvm-svn: 142238

ELF: Fix the section that relocations apply to. Add test to verify. Patch by Danil Malyshev!

llvm-svn: 141901

Elf_Word is not POD! Stop using it in a DenseMap.

llvm-svn: 141851

lib/Object/ELFObjectFile.cpp: Fix undefined behavior for MC/ELF/many-section.s not to fail (on msvc).

DenseMap::lookup(k) would return "default constructor value" when k was not met. It would be use

lib/Object/ELFObjectFile.cpp: Fix undefined behavior for MC/ELF/many-section.s not to fail (on msvc).

DenseMap::lookup(k) would return "default constructor value" when k was not met. It would be useless when value type were POD.

llvm-svn: 141774

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Reapply r141605 with fixes for appropriate handling of reserved section numbers
in st_shndx fields.

llvm-svn: 141639

Add support for .symtab_shnidx. Unfortunately, doing this required breaking a
layer of abstraction around SymbolRef where you can read its private
SymbolPimpl member.

llvm-svn: 141636

Revert r141605 as it broke tests for llvm-nm.

llvm-svn: 141614

Add support for reading many-section ELF files.
If you want to tackle adding the testcase, let me know. It's a 4.2MB ELF file
and I'll be happy to mail it to you.

llvm-svn: 141605

Object: add getSectionAlignment.

llvm-svn: 141581

Fix GCC again.

llvm-svn: 141389

Change relocation API to be per section. This time without breaking GCC.

llvm-svn: 141385

Revert 141376 and 141377 due to breaking the build.

--- Reverse-merging r141377 into '.':
U tools/llvm-objdump/MachODump.cpp
--- Reverse-merging r141376 into '.':
U include/llvm/Object/COFF.h

Revert 141376 and 141377 due to breaking the build.

--- Reverse-merging r141377 into '.':
U tools/llvm-objdump/MachODump.cpp
--- Reverse-merging r141376 into '.':
U include/llvm/Object/COFF.h
U include/llvm/Object/ObjectFile.h
U include/llvm-c/Object.h
U tools/llvm-objdump/llvm-objdump.cpp
U lib/Object/MachOObjectFile.cpp
U lib/Object/COFFObjectFile.cpp
U lib/Object/Object.cpp
U lib/Object/ELFObjectFile.cpp

llvm-svn: 141379

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Change relocation API to be per section.

llvm-svn: 141376