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authornkozlovskiy <nmk@ydb.tech>2023-10-11 19:11:46 +0300
committernkozlovskiy <nmk@ydb.tech>2023-10-11 19:33:28 +0300
commit61b3971447e473726d6cdb23fc298e457b4d973c (patch)
treee2a2a864bb7717f7ae6138f6a3194a254dd2c7bb /contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_atomic_clang_x86.h
parenta674dc57d88d43c2e8e90a6084d5d2c988e0402c (diff)
downloadydb-61b3971447e473726d6cdb23fc298e457b4d973c.tar.gz
add sanitizers dependencies
Diffstat (limited to 'contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_atomic_clang_x86.h')
-rw-r--r--contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_atomic_clang_x86.h113
1 files changed, 113 insertions, 0 deletions
diff --git a/contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_atomic_clang_x86.h b/contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_atomic_clang_x86.h
new file mode 100644
index 0000000000..51597b4927
--- /dev/null
+++ b/contrib/libs/clang14-rt/lib/sanitizer_common/sanitizer_atomic_clang_x86.h
@@ -0,0 +1,113 @@
+//===-- sanitizer_atomic_clang_x86.h ----------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer/AddressSanitizer runtime.
+// Not intended for direct inclusion. Include sanitizer_atomic.h.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SANITIZER_ATOMIC_CLANG_X86_H
+#define SANITIZER_ATOMIC_CLANG_X86_H
+
+namespace __sanitizer {
+
+inline void proc_yield(int cnt) {
+ __asm__ __volatile__("" ::: "memory");
+ for (int i = 0; i < cnt; i++)
+ __asm__ __volatile__("pause");
+ __asm__ __volatile__("" ::: "memory");
+}
+
+template<typename T>
+inline typename T::Type atomic_load(
+ const volatile T *a, memory_order mo) {
+ DCHECK(mo & (memory_order_relaxed | memory_order_consume
+ | memory_order_acquire | memory_order_seq_cst));
+ DCHECK(!((uptr)a % sizeof(*a)));
+ typename T::Type v;
+
+ if (sizeof(*a) < 8 || sizeof(void*) == 8) {
+ // Assume that aligned loads are atomic.
+ if (mo == memory_order_relaxed) {
+ v = a->val_dont_use;
+ } else if (mo == memory_order_consume) {
+ // Assume that processor respects data dependencies
+ // (and that compiler won't break them).
+ __asm__ __volatile__("" ::: "memory");
+ v = a->val_dont_use;
+ __asm__ __volatile__("" ::: "memory");
+ } else if (mo == memory_order_acquire) {
+ __asm__ __volatile__("" ::: "memory");
+ v = a->val_dont_use;
+ // On x86 loads are implicitly acquire.
+ __asm__ __volatile__("" ::: "memory");
+ } else { // seq_cst
+ // On x86 plain MOV is enough for seq_cst store.
+ __asm__ __volatile__("" ::: "memory");
+ v = a->val_dont_use;
+ __asm__ __volatile__("" ::: "memory");
+ }
+ } else {
+ // 64-bit load on 32-bit platform.
+ __asm__ __volatile__(
+ "movq %1, %%mm0;" // Use mmx reg for 64-bit atomic moves
+ "movq %%mm0, %0;" // (ptr could be read-only)
+ "emms;" // Empty mmx state/Reset FP regs
+ : "=m" (v)
+ : "m" (a->val_dont_use)
+ : // mark the mmx registers as clobbered
+#ifdef __MMX__
+ "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7",
+#endif // #ifdef __MMX__
+ "memory");
+ }
+ return v;
+}
+
+template<typename T>
+inline void atomic_store(volatile T *a, typename T::Type v, memory_order mo) {
+ DCHECK(mo & (memory_order_relaxed | memory_order_release
+ | memory_order_seq_cst));
+ DCHECK(!((uptr)a % sizeof(*a)));
+
+ if (sizeof(*a) < 8 || sizeof(void*) == 8) {
+ // Assume that aligned loads are atomic.
+ if (mo == memory_order_relaxed) {
+ a->val_dont_use = v;
+ } else if (mo == memory_order_release) {
+ // On x86 stores are implicitly release.
+ __asm__ __volatile__("" ::: "memory");
+ a->val_dont_use = v;
+ __asm__ __volatile__("" ::: "memory");
+ } else { // seq_cst
+ // On x86 stores are implicitly release.
+ __asm__ __volatile__("" ::: "memory");
+ a->val_dont_use = v;
+ __sync_synchronize();
+ }
+ } else {
+ // 64-bit store on 32-bit platform.
+ __asm__ __volatile__(
+ "movq %1, %%mm0;" // Use mmx reg for 64-bit atomic moves
+ "movq %%mm0, %0;"
+ "emms;" // Empty mmx state/Reset FP regs
+ : "=m" (a->val_dont_use)
+ : "m" (v)
+ : // mark the mmx registers as clobbered
+#ifdef __MMX__
+ "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7",
+#endif // #ifdef __MMX__
+ "memory");
+ if (mo == memory_order_seq_cst)
+ __sync_synchronize();
+ }
+}
+
+} // namespace __sanitizer
+
+#endif // #ifndef SANITIZER_ATOMIC_CLANG_X86_H