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| author | Kostya Serebryany <kcc@google.com> | 2013-02-15 12:00:24 +0000 |
|---|---|---|
| committer | Kostya Serebryany <kcc@google.com> | 2013-02-15 12:00:24 +0000 |
| commit | e31eca900a1f8849af75100c2d92e838d79d0920 (patch) | |
| tree | 02039a2303dcbdd24f993dee28fbd2ef6b36299f /lib/asan/asan_internal.h | |
| parent | eab061185ec0046d447b298a1dff84f028202a3c (diff) | |
| download | compiler-rt-e31eca900a1f8849af75100c2d92e838d79d0920.tar.gz compiler-rt-e31eca900a1f8849af75100c2d92e838d79d0920.tar.bz2 compiler-rt-e31eca900a1f8849af75100c2d92e838d79d0920.tar.xz | |
[asan] make asan work with 7fff8000 offset and prelink
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow ||
|| [0x000000000000, 0x00007fff7fff] || LowMem ||
Do it only if necessary.
Also added a bit of profiling code to make sure that the
mapping code is efficient.
Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.
Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.
Patch partially by Jakub Jelinek.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@175263 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/asan/asan_internal.h')
| -rw-r--r-- | lib/asan/asan_internal.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/asan/asan_internal.h b/lib/asan/asan_internal.h index dfab3f06..b3b1fe70 100644 --- a/lib/asan/asan_internal.h +++ b/lib/asan/asan_internal.h @@ -54,7 +54,7 @@ #define ASAN_POSIX (ASAN_LINUX || ASAN_MAC) -#if __has_feature(address_sanitizer) +#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__) # error "The AddressSanitizer run-time should not be" " instrumented by AddressSanitizer" #endif |