[PATCH] D30426: [AddressSanitizer] Put shadow at 0 for Fuchsia
Petr Hosek via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Feb 27 15:01:34 PST 2017
This revision was automatically updated to reflect the committed changes.
Closed by commit rL296405: [AddressSanitizer] Put shadow at 0 for Fuchsia (authored by phosek).
Changed prior to commit:
https://reviews.llvm.org/D30426?vs=89916&id=89943#toc
Repository:
rL LLVM
https://reviews.llvm.org/D30426
Files:
llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp
Index: llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp
===================================================================
--- llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ llvm/trunk/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -394,6 +394,7 @@
TargetTriple.getArch() == llvm::Triple::mips64el;
bool IsAArch64 = TargetTriple.getArch() == llvm::Triple::aarch64;
bool IsWindows = TargetTriple.isOSWindows();
+ bool IsFuchsia = TargetTriple.isOSFuchsia();
ShadowMapping Mapping;
@@ -414,7 +415,11 @@
else
Mapping.Offset = kDefaultShadowOffset32;
} else { // LongSize == 64
- if (IsPPC64)
+ // Fuchsia is always PIE, which means that the beginning of the address
+ // space is always available.
+ if (IsFuchsia)
+ Mapping.Offset = 0;
+ else if (IsPPC64)
Mapping.Offset = kPPC64_ShadowOffset64;
else if (IsSystemZ)
Mapping.Offset = kSystemZ_ShadowOffset64;
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