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//===-- 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"
#include "sanitizer_common/sanitizer_ptrauth.h"
#define CALLERPC ((uptr)__builtin_return_address(0))
using namespace __tsan;
void __tsan_init() { Initialize(cur_thread_init()); }
void __tsan_flush_memory() {
FlushShadowMemory();
}
void __tsan_read16_pc(void *addr, void *pc) {
uptr pc_no_pac = STRIP_PAC_PC(pc);
ThreadState *thr = cur_thread();
MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessRead);
MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessRead);
}
void __tsan_write16_pc(void *addr, void *pc) {
uptr pc_no_pac = STRIP_PAC_PC(pc);
ThreadState *thr = cur_thread();
MemoryAccess(thr, pc_no_pac, (uptr)addr, 8, kAccessWrite);
MemoryAccess(thr, pc_no_pac, (uptr)addr + 8, 8, kAccessWrite);
}
// __tsan_unaligned_read/write calls are emitted by compiler.
void __tsan_unaligned_read16(const void *addr) {
uptr pc = CALLERPC;
ThreadState *thr = cur_thread();
UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessRead);
UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessRead);
}
void __tsan_unaligned_write16(void *addr) {
uptr pc = CALLERPC;
ThreadState *thr = cur_thread();
UnalignedMemoryAccess(thr, pc, (uptr)addr, 8, kAccessWrite);
UnalignedMemoryAccess(thr, pc, (uptr)addr + 8, 8, kAccessWrite);
}
extern "C" {
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);
}
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