intel/llvm

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Files

George Rimar 63a6ca9150 [ELF] Implements -z relro: create an ELF "PT_GNU_RELRO" segment header in the object.

Partial (-z relro) and full (-z relro, -z now) relro cases are implemented.

Partial relro:
The ELF sections are reordered so that the ELF internal data sections (.got, .dtors, etc.) precede the program's data sections (.data and .bss).
.got is readonly, .got.plt is still writeable.

Full relro:
Supports all the features of partial RELRO, .got.plt is also readonly.

Differential revision: http://reviews.llvm.org/D14218

llvm-svn: 253967

2015-11-24 09:44:28 +00:00

CMakeLists.txt

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Config.h

[ELF] Implements -z relro: create an ELF "PT_GNU_RELRO" segment header in the object.

2015-11-24 09:44:28 +00:00

Driver.cpp

[ELF] Implements -z relro: create an ELF "PT_GNU_RELRO" segment header in the object.

2015-11-24 09:44:28 +00:00

Driver.h

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DriverUtils.cpp

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Error.cpp

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Error.h

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InputFiles.cpp

ELF: Make .note.GNU-stack more compatible with traditional linkers.

2015-11-21 22:19:32 +00:00

InputFiles.h

Make a function out-of-line.

2015-11-20 02:10:52 +00:00

InputSection.cpp

[ELF2] - Optimization for R_X86_64_GOTTPOFF relocation.

2015-11-24 09:00:06 +00:00

InputSection.h

Add support for processing .eh_frame.

2015-11-11 19:54:14 +00:00

LinkerScript.cpp

[ELF2] SECTIONS command basic support

2015-11-12 09:52:08 +00:00

MarkLive.cpp

Early continue. NFC.

2015-11-12 19:45:58 +00:00

Options.td

Define -E as an alias for --export-dynamic.

2015-11-20 21:22:53 +00:00

OutputSections.cpp

Fix Elf_Rel processing for .eh_frame.

2015-11-23 15:28:28 +00:00

OutputSections.h

[ELF2] - Implemented R_X86_64_GOTTPOFF relocation

2015-11-13 16:28:53 +00:00

README.md

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Symbols.cpp

[ELF] Define symbols "_end" and "end" if referenced.

2015-11-20 02:32:35 +00:00

Symbols.h

[ELF] Define symbols "_end" and "end" if referenced.

2015-11-20 02:32:35 +00:00

SymbolTable.cpp

[ELF] Prevent SEGFAULT in case of conflict with an internally defined symbol.

2015-11-19 19:08:45 +00:00

SymbolTable.h

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Target.cpp

[ELF2] - Optimization for R_X86_64_GOTTPOFF relocation.

2015-11-24 09:00:06 +00:00

Target.h

[ELF2] - Optimization for R_X86_64_GOTTPOFF relocation.

2015-11-24 09:00:06 +00:00

Writer.cpp

[ELF] Implements -z relro: create an ELF "PT_GNU_RELRO" segment header in the object.

2015-11-24 09:44:28 +00:00

Writer.h

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README.md

The New ELF Linker

This directory contains a port of the new PE/COFF linker for ELF.

Overall Design

See COFF/README.md for details on the design. Note that unlike COFF, we do not distinguish chunks from input sections; they are merged together.

Capabilities

This linker can link LLVM and Clang on Linux/x86-64 or FreeBSD/x86-64 with -LLVM_ENABLE_THREADS=OFF. "Hello world" can be linked on Linux/PPC64.

Performance

Achieving good performance is one of our goals. It's too early to reach a conclusion, but we are optimistic about that as it currently seems to be faster than GNU gold. It will be interesting to compare when we are close to feature parity.