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//===-- tsan_go.cc --------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// ThreadSanitizer runtime for Go language.
//
//===----------------------------------------------------------------------===//
#include "tsan_rtl.h"
#include "tsan_symbolize.h"
#include "sanitizer_common/sanitizer_common.h"
#include <stdlib.h>
namespace __tsan {
void InitializeInterceptors() {
}
void InitializeDynamicAnnotations() {
}
bool IsExpectedReport(uptr addr, uptr size) {
return false;
}
void internal_start_thread(void(*func)(void*), void *arg) {
}
ReportLocation *SymbolizeData(uptr addr) {
return 0;
}
ReportStack *NewReportStackEntry(uptr addr) {
ReportStack *ent = (ReportStack*)internal_alloc(MBlockReportStack,
sizeof(ReportStack));
internal_memset(ent, 0, sizeof(*ent));
ent->pc = addr;
return ent;
}
void *internal_alloc(MBlockType typ, uptr sz) {
return InternalAlloc(sz);
}
void internal_free(void *p) {
InternalFree(p);
}
// Callback into Go.
extern "C" int __tsan_symbolize(uptr pc, char **func, char **file,
int *line, int *off);
ReportStack *SymbolizeCode(uptr addr) {
ReportStack *s = (ReportStack*)internal_alloc(MBlockReportStack,
sizeof(ReportStack));
internal_memset(s, 0, sizeof(*s));
s->pc = addr;
char *func = 0, *file = 0;
int line = 0, off = 0;
if (__tsan_symbolize(addr, &func, &file, &line, &off)) {
s->offset = off;
s->func = internal_strdup(func ? func : "??");
s->file = internal_strdup(file ? file : "-");
s->line = line;
s->col = 0;
free(func);
free(file);
}
return s;
}
extern "C" {
static ThreadState *main_thr;
static ThreadState *AllocGoroutine() {
ThreadState *thr = (ThreadState*)internal_alloc(MBlockThreadContex,
sizeof(ThreadState));
internal_memset(thr, 0, sizeof(*thr));
return thr;
}
void __tsan_init(ThreadState **thrp) {
ThreadState *thr = AllocGoroutine();
main_thr = *thrp = thr;
thr->in_rtl++;
Initialize(thr);
thr->in_rtl--;
}
void __tsan_fini() {
// FIXME: Not necessary thread 0.
ThreadState *thr = main_thr;
thr->in_rtl++;
int res = Finalize(thr);
thr->in_rtl--;
exit(res);
}
void __tsan_map_shadow(uptr addr, uptr size) {
MapShadow(addr, size);
}
void __tsan_read(ThreadState *thr, void *addr, void *pc) {
MemoryRead(thr, (uptr)pc, (uptr)addr, kSizeLog1);
}
void __tsan_write(ThreadState *thr, void *addr, void *pc) {
MemoryWrite(thr, (uptr)pc, (uptr)addr, kSizeLog1);
}
void __tsan_read_range(ThreadState *thr, void *addr, uptr size, uptr step,
void *pc) {
(void)step;
MemoryAccessRange(thr, (uptr)pc, (uptr)addr, size, false);
}
void __tsan_write_range(ThreadState *thr, void *addr, uptr size, uptr step,
void *pc) {
(void)step;
MemoryAccessRange(thr, (uptr)pc, (uptr)addr, size, true);
}
void __tsan_func_enter(ThreadState *thr, void *pc) {
FuncEntry(thr, (uptr)pc);
}
void __tsan_func_exit(ThreadState *thr) {
FuncExit(thr);
}
void __tsan_malloc(ThreadState *thr, void *p, uptr sz, void *pc) {
if (thr == 0) // probably before __tsan_init()
return;
thr->in_rtl++;
MemoryResetRange(thr, (uptr)pc, (uptr)p, sz);
thr->in_rtl--;
}
void __tsan_free(void *p) {
(void)p;
}
void __tsan_go_start(ThreadState *parent, ThreadState **pthr, void *pc) {
ThreadState *thr = AllocGoroutine();
*pthr = thr;
thr->in_rtl++;
parent->in_rtl++;
int goid = ThreadCreate(parent, (uptr)pc, 0, true);
ThreadStart(thr, goid, 0);
parent->in_rtl--;
thr->in_rtl--;
}
void __tsan_go_end(ThreadState *thr) {
thr->in_rtl++;
ThreadFinish(thr);
thr->in_rtl--;
internal_free(thr);
}
void __tsan_acquire(ThreadState *thr, void *addr) {
thr->in_rtl++;
Acquire(thr, 0, (uptr)addr);
thr->in_rtl--;
}
void __tsan_release(ThreadState *thr, void *addr) {
thr->in_rtl++;
ReleaseStore(thr, 0, (uptr)addr);
thr->in_rtl--;
}
void __tsan_release_merge(ThreadState *thr, void *addr) {
thr->in_rtl++;
Release(thr, 0, (uptr)addr);
thr->in_rtl--;
}
void __tsan_finalizer_goroutine(ThreadState *thr) {
AcquireGlobal(thr, 0);
}
} // extern "C"
} // namespace __tsan
namespace __sanitizer {
void SymbolizerPrepareForSandboxing() {
// Nothing to do here for Go.
}
} // namespace __sanitizer
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