diff options
| author | David CARLIER <devnexen@gmail.com> | 2021-11-08 22:26:32 +0000 |
|---|---|---|
| committer | David CARLIER <devnexen@gmail.com> | 2021-11-08 22:26:32 +0000 |
| commit | 443820179a849eac6ddb5cbf0ba5cc7bbc42e2d2 (patch) | |
| tree | 1f643aa9d867b9791e463c6147752095516e7492 | |
| parent | 2caf85ad7ab83c441cb8e3550916d7028dfb8525 (diff) | |
| download | llvm-443820179a849eac6ddb5cbf0ba5cc7bbc42e2d2.tar.gz | |
[compiler-rt] TlsBaseAddr value for darwin arm64
getting the tls base address. unlike linux arm64, the tpidr_el0 returns always 0 (aka unused)
thus using tpidrro_el0 instead clearing up the cpu id encoded in the lower bits.
Reviewed-By: yln
Differential Revision: https://reviews.llvm.org/D112866
| -rw-r--r-- | compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp index 36a9d5098042..b67203d4c10e 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp +++ b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp @@ -543,6 +543,9 @@ uptr TlsBaseAddr() { asm("movq %%gs:0,%0" : "=r"(segbase)); #elif defined(__i386__) asm("movl %%gs:0,%0" : "=r"(segbase)); +#elif defined(__aarch64__) + asm("mrs %x0, tpidrro_el0" : "=r"(segbase)); + segbase &= 0x07ul; // clearing lower bits, cpu id stored there #endif return segbase; } |