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Ultra-compatible memory mapping #579
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Reported by - _Attachment: [split-layout-compiler-rt.patch](https://storage.googleapis.com/google-code-attachments/memory-sanitizer/issue-76/comment-5/split-layout-compiler-rt.patch)_ - _Attachment: [split-layout-llvm.patch](https://storage.googleapis.com/google-code-attachments/memory-sanitizer/issue-76/comment-5/split-layout-llvm.patch)_ |
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This is an implementation of google/sanitizers#579 It has a number of advantages over the current mapping: * Works for non-PIE executables. * Does not require ASLR; as a consequence, debugging MSan programs in gdb no longer requires "set disable-randomization off". * Supports linux kernels >=4.1.2. * The code is marginally faster and smaller. This is an ABI break. We never really promised ABI stability, but this patch includes a courtesy escape hatch: a compile-time macro that reverts back to the old mapping layout. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249753 91177308-0d34-0410-b5e6-96231b3b80d8
The final version differs a bit from above description. |
This is an implementation of google/sanitizers#579 It has a number of advantages over the current mapping: * Works for non-PIE executables. * Does not require ASLR; as a consequence, debugging MSan programs in gdb no longer requires "set disable-randomization off". * Supports linux kernels >=4.1.2. * The code is marginally faster and smaller. This is an ABI break. We never really promised ABI stability, but this patch includes a courtesy escape hatch: a compile-time macro that reverts back to the old mapping layout. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249753 91177308-0d34-0410-b5e6-96231b3b80d8
Originally reported on Google Code with ID 76
Reported by
eugenis@google.com
on 2014-11-27 09:23:52The text was updated successfully, but these errors were encountered: