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-rw-r--r--lib/tsan/rtl/tsan_interface.cpp160
1 files changed, 160 insertions, 0 deletions
diff --git a/lib/tsan/rtl/tsan_interface.cpp b/lib/tsan/rtl/tsan_interface.cpp
new file mode 100644
index 000000000000..2b3a0889b70a
--- /dev/null
+++ b/lib/tsan/rtl/tsan_interface.cpp
@@ -0,0 +1,160 @@
+//===-- tsan_interface.cpp ------------------------------------------------===//
+//
+// 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 (TSan), a race detector.
+//
+//===----------------------------------------------------------------------===//
+
+#include "tsan_interface.h"
+#include "tsan_interface_ann.h"
+#include "tsan_rtl.h"
+#include "sanitizer_common/sanitizer_internal_defs.h"
+
+#define CALLERPC ((uptr)__builtin_return_address(0))
+
+using namespace __tsan;
+
+typedef u16 uint16_t;
+typedef u32 uint32_t;
+typedef u64 uint64_t;
+
+void __tsan_init() {
+ cur_thread_init();
+ Initialize(cur_thread());
+}
+
+void __tsan_flush_memory() {
+ FlushShadowMemory();
+}
+
+void __tsan_read16(void *addr) {
+ MemoryRead(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8);
+ MemoryRead(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8);
+}
+
+void __tsan_write16(void *addr) {
+ MemoryWrite(cur_thread(), CALLERPC, (uptr)addr, kSizeLog8);
+ MemoryWrite(cur_thread(), CALLERPC, (uptr)addr + 8, kSizeLog8);
+}
+
+void __tsan_read16_pc(void *addr, void *pc) {
+ MemoryRead(cur_thread(), (uptr)pc, (uptr)addr, kSizeLog8);
+ MemoryRead(cur_thread(), (uptr)pc, (uptr)addr + 8, kSizeLog8);
+}
+
+void __tsan_write16_pc(void *addr, void *pc) {
+ MemoryWrite(cur_thread(), (uptr)pc, (uptr)addr, kSizeLog8);
+ MemoryWrite(cur_thread(), (uptr)pc, (uptr)addr + 8, kSizeLog8);
+}
+
+// __tsan_unaligned_read/write calls are emitted by compiler.
+
+void __tsan_unaligned_read2(const void *addr) {
+ UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, false, false);
+}
+
+void __tsan_unaligned_read4(const void *addr) {
+ UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, false, false);
+}
+
+void __tsan_unaligned_read8(const void *addr) {
+ UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, false, false);
+}
+
+void __tsan_unaligned_read16(const void *addr) {
+ UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, false, false);
+}
+
+void __tsan_unaligned_write2(void *addr) {
+ UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 2, true, false);
+}
+
+void __tsan_unaligned_write4(void *addr) {
+ UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 4, true, false);
+}
+
+void __tsan_unaligned_write8(void *addr) {
+ UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 8, true, false);
+}
+
+void __tsan_unaligned_write16(void *addr) {
+ UnalignedMemoryAccess(cur_thread(), CALLERPC, (uptr)addr, 16, true, false);
+}
+
+// __sanitizer_unaligned_load/store are for user instrumentation.
+
+extern "C" {
+SANITIZER_INTERFACE_ATTRIBUTE
+u16 __sanitizer_unaligned_load16(const uu16 *addr) {
+ __tsan_unaligned_read2(addr);
+ return *addr;
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+u32 __sanitizer_unaligned_load32(const uu32 *addr) {
+ __tsan_unaligned_read4(addr);
+ return *addr;
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+u64 __sanitizer_unaligned_load64(const uu64 *addr) {
+ __tsan_unaligned_read8(addr);
+ return *addr;
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void __sanitizer_unaligned_store16(uu16 *addr, u16 v) {
+ __tsan_unaligned_write2(addr);
+ *addr = v;
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void __sanitizer_unaligned_store32(uu32 *addr, u32 v) {
+ __tsan_unaligned_write4(addr);
+ *addr = v;
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void __sanitizer_unaligned_store64(uu64 *addr, u64 v) {
+ __tsan_unaligned_write8(addr);
+ *addr = v;
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void *__tsan_get_current_fiber() {
+ return cur_thread();
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void *__tsan_create_fiber(unsigned flags) {
+ return FiberCreate(cur_thread(), CALLERPC, flags);
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void __tsan_destroy_fiber(void *fiber) {
+ FiberDestroy(cur_thread(), CALLERPC, static_cast<ThreadState *>(fiber));
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void __tsan_switch_to_fiber(void *fiber, unsigned flags) {
+ FiberSwitch(cur_thread(), CALLERPC, static_cast<ThreadState *>(fiber), flags);
+}
+
+SANITIZER_INTERFACE_ATTRIBUTE
+void __tsan_set_fiber_name(void *fiber, const char *name) {
+ ThreadSetName(static_cast<ThreadState *>(fiber), name);
+}
+} // extern "C"
+
+void __tsan_acquire(void *addr) {
+ Acquire(cur_thread(), CALLERPC, (uptr)addr);
+}
+
+void __tsan_release(void *addr) {
+ Release(cur_thread(), CALLERPC, (uptr)addr);
+}