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[sanitizer] [SystemZ] Enable TLS functionality. 

This enables TLS knowledge for s390 in sanitizers.

Differential Revision: http://reviews.llvm.org/D19594

llvm-svn: 273040
This commit is contained in:
Marcin Koscielnicki 2016-06-17 20:24:32 +00:00
parent fd4b6b9e51
commit 655db0fd3a
1 changed files with 6 additions and 3 deletions
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9
compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cc
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@ -187,7 +187,7 @@ void InitTlsSize() { }
#endif // !SANITIZER_FREEBSD && !SANITIZER_ANDROID && !SANITIZER_GO
#if (defined(__x86_64__) || defined(__i386__) || defined(__mips__) \
|| defined(__aarch64__) || defined(__powerpc64__)) \
|| defined(__aarch64__) || defined(__powerpc64__) || defined(__s390__)) \
&& SANITIZER_LINUX && !SANITIZER_ANDROID
// sizeof(struct pthread) from glibc.
static atomic_uintptr_t kThreadDescriptorSize;
@ -249,6 +249,9 @@ uptr ThreadDescriptorSize() {
val = 1776; // from glibc.ppc64le 2.20-8.fc21
atomic_store(&kThreadDescriptorSize, val, memory_order_relaxed);
return val;
#elif defined(__s390__)
val = FIRST_32_SECOND_64(1152, 1776); // valid for glibc 2.22
atomic_store(&kThreadDescriptorSize, val, memory_order_relaxed);
#endif
return 0;
}
@ -296,7 +299,7 @@ uptr ThreadSelf() {
rdhwr %0,$29;\
.set pop" : "=r" (thread_pointer));
descr_addr = thread_pointer - kTlsTcbOffset - TlsPreTcbSize();
# elif defined(__aarch64__)
# elif defined(__aarch64__) || defined(__s390__)
descr_addr = reinterpret_cast<uptr>(__builtin_thread_pointer());
# elif defined(__powerpc64__)
// PPC64LE uses TLS variant I. The thread pointer (in GPR 13)
@ -337,7 +340,7 @@ uptr ThreadSelf() {
#if !SANITIZER_GO
static void GetTls(uptr *addr, uptr *size) {
#if SANITIZER_LINUX && !SANITIZER_ANDROID
# if defined(__x86_64__) || defined(__i386__)
# if defined(__x86_64__) || defined(__i386__) || defined(__s390__)
*addr = ThreadSelf();
*size = GetTlsSize();
*addr -= *size;