[tsan] Add tsan support for loongarch64

[tangyouling]

Summary

This patch enabled tsan for loongarch64 with 47-bit VMA layout. All
tests are passing.

Also adds assembly routines to enable setjmp/longjmp for loongarch64
on linux.

[tangyouling]

$ make check-tsan -j4
Testing Time: 78.34s
  Unsupported      :  91
  Passed           : 345
  Expectedly Failed:   2

[SixWeining]

I haven't check the correctness of tsan_rtl_loongarch64.S. Perhaps @XiaodongLoong has some inputs as I know he has implemented this previously.

compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp

1513

I'm not sure if this is necessary. Maybe int res; is enough?

1543

Shall we list $t0-$t8 here? Ref D137396.

compiler-rt/lib/sanitizer_common/sanitizer_linux.h

80–82

May be it's better to keep original indention. Otherwise the paired #endif doesn't look good.

compiler-rt/test/sanitizer_common/print_address.h

12

Should be __loongarch64?

compiler-rt/test/tsan/mmap_large.cpp

20

Should be __loongarch64?

[xry111]

compiler-rt/lib/sanitizer_common/sanitizer_linux.h

80–82

The problem is git clang-format sometimes insist you to change the indentation...

compiler-rt/test/sanitizer_common/print_address.h

12

__loongarch64 is deprecated, use __loongarch_lp64 instead.

[MaskRay]

compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp

269

We should add new code in this fallback function. The generic code handles all new ports.

It's incorrect to assume that sizeof(pthread) stays 1936 as new glibc versions can add more fields.

[tangyouling]

compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp

1513

I'm not sure if this is necessary. Maybe int res; is enough?

Referring to riscv64/aarch64, the existing definition is probably appropriate.
The return value res is stored directly in $a0, which may reduce the need to move the res value to $a0.

1543

Shall we list $t0-$t8 here? Ref D137396.

I will add the missing $t0-$t8.

compiler-rt/lib/sanitizer_common/sanitizer_linux.h

80–82

The problem is git clang-format sometimes insist you to change the indentation...

Yeah.

compiler-rt/test/sanitizer_common/print_address.h

12

__loongarch64 is deprecated, use __loongarch_lp64 instead.

Okay, use __loongarch_lp64 instead.

[tangyouling]

compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp

269

We should add new code in this fallback function. The generic code handles all new ports.

It's incorrect to assume that sizeof(pthread) stays 1936 as new glibc versions can add more fields.

By looking at D119007, I can see that the val value obtained from _thread_db_sizeof_pthread is 1856 (glibc version 2.36).

Is it correct to change the ThreadDescriptorSizeFallback to the following,

#elif SANITIZER_LOONGARCH64
  val = 1856;

[SixWeining]

compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp

1543

As this inline asm is almost at the end of the function, it's sure $t* would not be used any more. So I think we could not add them to the clobber list. Just keep current approach.

[tangyouling]

• Fixed the ThreadDescriptorSize calculation on loongarch64.
• Use __loongarch_lp64 to distinguish loongarch64.

[xry111]

compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp

1543

It's hard to tell: the compiler may decide to inline this function of perform some inter-procedural analysis. So IMO we should add t0-t8 here.

1543

It's hard to tell: the compiler may decide to inline this function of perform some inter-procedural analysis. So IMO we should add t0-t8 here.

"or perform", not "of perform".

[SixWeining]

compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp

1543

Make sense. Thanks.

[tangyouling]

Add the missing $t0-$t8 in internal_clone().

[SixWeining]

LGTM from the LoongArch side but it's better to wait for others.

compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp

270

Better to add some comment about the glibc version?

[tangyouling]

Add glibc version comments.

[dvyukov]

compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp

1526

Please use C-style one-line comments //

[tangyouling]

Use C-style one-line comments //.

clang/lib/Driver/ToolChains/Linux.cpp

SanitizerMask Linux::getSupportedSanitizers() const {
   Res |= SanitizerKind::Memory;
   Res |= SanitizerKind::Vptr;
   Res |= SanitizerKind::SafeStack;
   if (IsX86_64 || IsMIPS64 || IsAArch64)
     Res |= SanitizerKind::DataFlow;
   if (IsX86_64 || IsMIPS64 || IsAArch64 || IsX86 || IsArmArch || IsPowerPC64 ||
       IsRISCV64 || IsSystemZ || IsHexagon)
     Res |= SanitizerKind::Leak;
-  if (IsX86_64 || IsMIPS64 || IsAArch64 || IsPowerPC64 || IsSystemZ)
+  if (IsX86_64 || IsMIPS64 || IsAArch64 || IsPowerPC64 || IsSystemZ ||
+      IsLoongArch64)
     Res |= SanitizerKind::Thread;
   if (IsX86_64)
     Res |= SanitizerKind::KernelMemory;
   if (IsX86 || IsX86_64)
     Res |= SanitizerKind::Function;
   if (IsX86_64 || IsMIPS64 || IsAArch64 || IsX86 || IsMIPS || IsArmArch ||
       IsPowerPC64 || IsHexagon || IsLoongArch64)
     Res |= SanitizerKind::Scudo;

compiler-rt/cmake/Modules/AllSupportedArchDefs.cmake

set(ALL_LSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${MIPS64} ${ARM64} ${ARM32}
       ${PPC64} ${S390X} ${RISCV64} ${HEXAGON})
 endif()
 set(ALL_MSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${PPC64} ${S390X})
 set(ALL_HWASAN_SUPPORTED_ARCH ${X86_64} ${ARM64})
 set(ALL_MEMPROF_SUPPORTED_ARCH ${X86_64})
 set(ALL_PROFILE_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${PPC32} ${PPC64}
     ${MIPS32} ${MIPS64} ${S390X} ${SPARC} ${SPARCV9} ${HEXAGON}
     ${RISCV32} ${RISCV64})
-set(ALL_TSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${PPC64} ${S390X})
+set(ALL_TSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64} ${PPC64} ${S390X}
+    ${LOONGARCH64})
 set(ALL_UBSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${RISCV64}
     ${MIPS32} ${MIPS64} ${PPC64} ${S390X} ${SPARC} ${SPARCV9} ${HEXAGON})
 set(ALL_SAFESTACK_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM64} ${MIPS32} ${MIPS64}
     ${HEXAGON})
 set(ALL_CFI_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${MIPS64}
     ${HEXAGON})
 set(ALL_SCUDO_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64} ${MIPS32}
     ${MIPS64} ${PPC64} ${HEXAGON} ${LOONGARCH64})

compiler-rt/lib/sanitizer_common/sanitizer_linux.h

 #    if defined(__x86_64__)
 uptr internal_arch_prctl(int option, uptr arg2);
 #    endif
 // Used only by sanitizer_stoptheworld. Signal handlers that are actually used
 // (like the process-wide error reporting SEGV handler) must use
 // internal_sigaction instead.
 int internal_sigaction_norestorer(int signum, const void *act, void *oldact);
 void internal_sigdelset(__sanitizer_sigset_t *set, int signum);
-#if defined(__x86_64__) || defined(__mips__) || defined(__aarch64__) || \
+#    if defined(__x86_64__) || defined(__mips__) || defined(__aarch64__) || \
         defined(__powerpc64__) || defined(__s390__) || defined(__i386__) || \
-    defined(__arm__) || SANITIZER_RISCV64
+        defined(__arm__) || SANITIZER_RISCV64 || SANITIZER_LOONGARCH64
 uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg,
                     int *parent_tidptr, void *newtls, int *child_tidptr);
 #endif
 int internal_uname(struct utsname *buf);
 #elif SANITIZER_FREEBSD
 uptr internal_procctl(int type, int id, int cmd, void *data);
 void internal_sigdelset(__sanitizer_sigset_t *set, int signum);
 #elif SANITIZER_NETBSD

compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp

__asm__ __volatile__(
                        : "=r" (res)
                        : "i"(-EINVAL),
                          "r"(__fn), "r"(__stack), "r"(__flags), "r"(__arg),
                          "r"(__ptid), "r"(__tls), "r"(__ctid),
                          "i"(__NR_clone), "i"(__NR_exit)
                        : "x30", "memory");
   return res;
 }
+#elif SANITIZER_LOONGARCH64
+uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg,
+                    int *parent_tidptr, void *newtls, int *child_tidptr) {
+  if (!fn || !child_stack)
+    return -EINVAL;
+
+  CHECK_EQ(0, (uptr)child_stack % 16);
+
+  register int res __asm__("$a0");
+  register int __flags __asm__("$a0") = flags;
+  register void *__stack __asm__("$a1") = child_stack;
+  register int *__ptid __asm__("$a2") = parent_tidptr;
+  register void *__tls __asm__("$a3") = newtls;
+  register int *__ctid __asm__("$a4") = child_tidptr;
+  register int (*__fn)(void *) __asm__("$a5") = fn;
+  register void *__arg __asm__("$a6") = arg;
+  register int nr_clone __asm__("$a7") = __NR_clone;
+
+  __asm__ __volatile__(
+      "syscall 0\n"
+
+      // if ($a0 != 0)
+      //   return $a0;
+      "bnez $a0, 1f\n"
+
+      // In the child, now. Call "fn(arg)".
+      "move $a0, $a6\n"
+      "jr $a5\n"
+
+      // Call _exit($a0).
+      "addi.d $a7, $zero, %9\n"
+      "syscall 0\n"
+      "1:\n"
+
+      : "=r"(res)
+      : "0"(__flags), "r"(__stack), "r"(__ptid), "r"(__tls), "r"(__ctid),
+        "r"(__fn), "r"(__arg), "r"(nr_clone), "i"(__NR_exit)
+      : "memory", "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8");
+  return res;
+}
 #elif defined(__powerpc64__)
 uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg,
                    int *parent_tidptr, void *newtls, int *child_tidptr) {
   long long res;
 // Stack frame structure.
 #if SANITIZER_PPC64V1
 //   Back chain == 0        (SP + 112)
 // Frame (112 bytes):

compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp

 
 #if SANITIZER_GLIBC && !SANITIZER_GO
 __attribute__((unused)) static size_t g_tls_size;
 void InitTlsSize() {
   int major, minor, patch;
   g_use_dlpi_tls_data =
       GetLibcVersion(&major, &minor, &patch) && major == 2 && minor >= 25;
 
-#if defined(__aarch64__) || defined(__x86_64__) || defined(__powerpc64__)
+#if defined(__aarch64__) || defined(__x86_64__) || defined(__powerpc64__) || \
+    defined(__loongarch__)
   void *get_tls_static_info = dlsym(RTLD_NEXT, "_dl_get_tls_static_info");
   size_t tls_align;
   ((void (*)(size_t *, size_t *))get_tls_static_info)(&g_tls_size, &tls_align);
 #endif
 }
 #else
 void InitTlsSize() { }
 #endif  // SANITIZER_GLIBC && !SANITIZER_GO
#elif defined(__s390__) || defined(__sparc__)
   // suffices. Just return offsetof(struct pthread, specific_used), which hasn't
   // changed since 2007-05. Technically this applies to i386/x86_64 as well but
   // we call _dl_get_tls_static_info and need the precise size of struct
   // pthread.
   return FIRST_32_SECOND_64(524, 1552);
 #elif defined(__mips__)
   // TODO(sagarthakur): add more values as per different glibc versions.
   val = FIRST_32_SECOND_64(1152, 1776);
+#elif SANITIZER_LOONGARCH64
+  val = 1856; // from glibc 2.36
 #elif SANITIZER_RISCV64
   int major;
   int minor;
   int patch;
   if (GetLibcVersion(&major, &minor, &patch) && major == 2) {
     // TODO: consider adding an optional runtime check for an unknown (untested)
     // glibc version
     if (minor <= 28)  // WARNING: the highest tested version is 2.29
if (unsigned *psizeof = static_cast<unsigned *>(
           dlsym(RTLD_DEFAULT, "_thread_db_sizeof_pthread")))
     val = *psizeof;
   if (!val)
     val = ThreadDescriptorSizeFallback();
   atomic_store_relaxed(&thread_descriptor_size, val);
   return val;
 }
 
-#if defined(__mips__) || defined(__powerpc64__) || SANITIZER_RISCV64
+#if defined(__mips__) || defined(__powerpc64__) || SANITIZER_RISCV64 || \
+    SANITIZER_LOONGARCH64
 // TlsPreTcbSize includes size of struct pthread_descr and size of tcb
 // head structure. It lies before the static tls blocks.
 static uptr TlsPreTcbSize() {
 #if defined(__mips__)
   const uptr kTcbHead = 16; // sizeof (tcbhead_t)
 #elif defined(__powerpc64__)
   const uptr kTcbHead = 88; // sizeof (tcbhead_t)
 #elif SANITIZER_RISCV64
   const uptr kTcbHead = 16;  // sizeof (tcbhead_t)
+#elif SANITIZER_LOONGARCH64
+  const uptr kTcbHead = 16;  // sizeof (tcbhead_t)
 #endif
   const uptr kTlsAlign = 16;
   const uptr kTlsPreTcbSize =
       RoundUpTo(ThreadDescriptorSize() + kTcbHead, kTlsAlign);
   return kTlsPreTcbSize;
 }
 #endif
 

 #  endif
   *size = g_tls_size;
   *addr -= *size;
   *addr += ThreadDescriptorSize();
 #elif SANITIZER_GLIBC && defined(__aarch64__)
   *addr = reinterpret_cast<uptr>(__builtin_thread_pointer()) -
           ThreadDescriptorSize();
   *size = g_tls_size + ThreadDescriptorSize();
+#elif SANITIZER_GLIBC && defined(__loongarch__)
+  *addr = reinterpret_cast<uptr>(__builtin_thread_pointer()) -
+          ThreadDescriptorSize();
+  *size = g_tls_size + ThreadDescriptorSize();
 #elif SANITIZER_GLIBC && defined(__powerpc64__)
   // Workaround for glibc<2.25(?). 2.27 is known to not need this.
   uptr tp;
   asm("addi %0,13,-0x7000" : "=r"(tp));
   const uptr pre_tcb_size = TlsPreTcbSize();
   *addr = tp - pre_tcb_size;
   *size = g_tls_size + pre_tcb_size;
 #elif SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_SOLARIS

compiler-rt/lib/sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp

 //
 //===----------------------------------------------------------------------===//
 
 #include "sanitizer_platform.h"
 
 #if SANITIZER_LINUX &&                                                   \
     (defined(__x86_64__) || defined(__mips__) || defined(__aarch64__) || \
      defined(__powerpc64__) || defined(__s390__) || defined(__i386__) || \
-     defined(__arm__) || SANITIZER_RISCV64)
+     defined(__arm__) || SANITIZER_RISCV64 || SANITIZER_LOONGARCH64)
 
 #include "sanitizer_stoptheworld.h"
 
 #include "sanitizer_platform_limits_posix.h"
 #include "sanitizer_atomic.h"
 
 #include <errno.h>
 #include <sched.h> // for CLONE_* definitions
 #include <stddef.h>
 #include <sys/prctl.h> // for PR_* definitions
 #include <sys/ptrace.h> // for PTRACE_* definitions
 #include <sys/types.h> // for pid_t
 #include <sys/uio.h> // for iovec
 #include <elf.h> // for NT_PRSTATUS
-#if (defined(__aarch64__) || SANITIZER_RISCV64) && !SANITIZER_ANDROID
+#if (defined(__aarch64__) || SANITIZER_RISCV64 || SANITIZER_LOONGARCH64) && \
+     !SANITIZER_ANDROID
 // GLIBC 2.20+ sys/user does not include asm/ptrace.h
 # include <asm/ptrace.h>
 #endif
 #include <sys/user.h>  // for user_regs_struct
 #if SANITIZER_ANDROID && SANITIZER_MIPS
 # include <asm/reg.h>  // for mips SP register in sys/user.h
 #endif
 #include <sys/wait.h> // for signal-related stuff

 # endif
 
 #elif defined(__aarch64__)
 typedef struct user_pt_regs regs_struct;
 #define REG_SP sp
 static constexpr uptr kExtraRegs[] = {0};
 #define ARCH_IOVEC_FOR_GETREGSET
 
+#elif defined(__loongarch__)
+typedef struct user_pt_regs regs_struct;
+#define REG_SP regs[3]
+static constexpr uptr kExtraRegs[] = {0};
+#define ARCH_IOVEC_FOR_GETREGSET
+
 #elif SANITIZER_RISCV64
 typedef struct user_regs_struct regs_struct;
 // sys/ucontext.h already defines REG_SP as 2. Undefine it first.
 #undef REG_SP
 #define REG_SP sp
 static constexpr uptr kExtraRegs[] = {0};
 #define ARCH_IOVEC_FOR_GETREGSET
 
#endif
   return REGISTERS_AVAILABLE;
 }
 
 } // namespace __sanitizer
 
 #endif  // SANITIZER_LINUX && (defined(__x86_64__) || defined(__mips__)
         // || defined(__aarch64__) || defined(__powerpc64__)
         // || defined(__s390__) || defined(__i386__) || defined(__arm__)
+        // || SANITIZER_LOONGARCH64

compiler-rt/lib/tsan/rtl/CMakeLists.txt

elseif(arch MATCHES "powerpc64|powerpc64le")
       add_custom_target(GotsanRuntimeCheck
   COMMAND env "CC=${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1}"
     EXTRA_CFLAGS=${EXTRA_CFLAGS}
     IN_TMPDIR=1 SILENT=1 ${BUILDGO_SCRIPT}
   DEPENDS clang_rt.tsan-${arch} ${BUILDGO_SCRIPT}
   WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/../go
   COMMENT "Checking TSan Go runtime..."
   VERBATIM)
+    elseif(arch MATCHES "loongarch64")
+      add_asm_sources(TSAN_ASM_SOURCES
+        tsan_rtl_loongarch64.S
+        )
     elseif(arch MATCHES "mips64|mips64le")
       add_asm_sources(TSAN_ASM_SOURCES
         tsan_rtl_mips64.S
         )
     elseif(arch MATCHES "s390x")
       add_asm_sources(TSAN_ASM_SOURCES
         tsan_rtl_s390x.S
         )

compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp

 };
 #endif
 
 #if defined(__x86_64__) || defined(__mips__) || SANITIZER_PPC64V1 || \
     defined(__s390x__)
 #define PTHREAD_ABI_BASE  "GLIBC_2.3.2"
 #elif defined(__aarch64__) || SANITIZER_PPC64V2
 #define PTHREAD_ABI_BASE  "GLIBC_2.17"
+#elif SANITIZER_LOONGARCH64
+#define PTHREAD_ABI_BASE  "GLIBC_2.36"
 #endif
 
 extern "C" int pthread_attr_init(void *attr);
 extern "C" int pthread_attr_destroy(void *attr);
 DECLARE_REAL(int, pthread_attr_getdetachstate, void *, void *)
 extern "C" int pthread_attr_setstacksize(void *attr, uptr stacksize);
 extern "C" int pthread_atfork(void (*prepare)(void), void (*parent)(void),
                               void (*child)(void));

compiler-rt/lib/tsan/rtl/tsan_platform.h

struct MappingAarch64_48 {
   static const uptr kHiAppMemBeg   = 0x0ffff00000000ull;
   static const uptr kHiAppMemEnd   = 0x1000000000000ull;
   static const uptr kShadowMsk = 0x0fff800000000ull;
   static const uptr kShadowXor = 0x0000800000000ull;
   static const uptr kShadowAdd = 0x0000000000000ull;
   static const uptr kVdsoBeg       = 0xffff000000000ull;
 };
 
+/* C/C++ on linux/loongarch64 (47-bit VMA)
+0000 0000 4000 - 0080 0000 0000: main binary
+0080 0000 0000 - 0100 0000 0000: -
+0100 0000 0000 - 1000 0000 0000: shadow memory
[phone] - 3000 0000 0000: -
[phone] - 3400 0000 0000: metainfo
[phone] - 5555 0000 0000: -
[phone] - 5556 0000 0000: main binary (PIE)
[phone] - 7ffe 0000 0000: -
+7ffe 0000 0000 - 7fff 0000 0000: heap
+7fff 0000 0000 - 7fff 8000 0000: -
+7fff 8000 0000 - 8000 0000 0000: modules and main thread stack
+*/
+struct MappingLoongArch64_47 {
+  static const uptr kMetaShadowBeg = 0x300000000000ull;
+  static const uptr kMetaShadowEnd = 0x340000000000ull;
+  static const uptr kShadowBeg     = 0x010000000000ull;
+  static const uptr kShadowEnd     = 0x100000000000ull;
+  static const uptr kHeapMemBeg    = 0x7ffe00000000ull;
+  static const uptr kHeapMemEnd    = 0x7fff00000000ull;
+  static const uptr kLoAppMemBeg   = 0x000000004000ull;
+  static const uptr kLoAppMemEnd   = 0x008000000000ull;
+  static const uptr kMidAppMemBeg  = 0x555500000000ull;
+  static const uptr kMidAppMemEnd  = 0x555600000000ull;
+  static const uptr kHiAppMemBeg   = 0x7fff80000000ull;
+  static const uptr kHiAppMemEnd   = 0x800000000000ull;
+  static const uptr kShadowMsk     = 0x780000000000ull;
+  static const uptr kShadowXor     = 0x040000000000ull;
+  static const uptr kShadowAdd     = 0x000000000000ull;
+  static const uptr kVdsoBeg       = 0x7fffffffc000ull;
+};
+
 /*
 C/C++ on linux/powerpc64 (44-bit VMA)
 0000 0000 0100 - 0001 0000 0000: main binary
 0001 0000 0000 - 0001 0000 0000: -
 0001 0000 0000 - 0b00 0000 0000: shadow
 0b00 0000 0000 - 0b00 0000 0000: -
 0b00 0000 0000 - 0d00 0000 0000: metainfo (memory blocks and sync objects)
 0d00 0000 0000 - 0f00 0000 0000: -
#  elif defined(__aarch64__)
   switch (vmaSize) {
     case 39:
       return Func::template Apply<MappingAarch64_39>(arg);
     case 42:
       return Func::template Apply<MappingAarch64_42>(arg);
     case 48:
       return Func::template Apply<MappingAarch64_48>(arg);
   }
+#  elif SANITIZER_LOONGARCH64
+  return Func::template Apply<MappingLoongArch64_47>(arg);
 #  elif defined(__powerpc64__)
   switch (vmaSize) {
     case 44:
       return Func::template Apply<MappingPPC64_44>(arg);
     case 46:
       return Func::template Apply<MappingPPC64_46>(arg);
     case 47:
       return Func::template Apply<MappingPPC64_47>(arg);

 template <typename Func>
 void ForEachMapping() {
   Func::template Apply<Mapping48AddressSpace>();
   Func::template Apply<MappingMips64_40>();
   Func::template Apply<MappingAppleAarch64>();
   Func::template Apply<MappingAarch64_39>();
   Func::template Apply<MappingAarch64_42>();
   Func::template Apply<MappingAarch64_48>();
+  Func::template Apply<MappingLoongArch64_47>();
   Func::template Apply<MappingPPC64_44>();
   Func::template Apply<MappingPPC64_46>();
   Func::template Apply<MappingPPC64_47>();
   Func::template Apply<MappingS390x>();
   Func::template Apply<MappingGo48>();
   Func::template Apply<MappingGoWindows>();
   Func::template Apply<MappingGoPPC64_46>();
   Func::template Apply<MappingGoPPC64_47>();

compiler-rt/lib/tsan/rtl/tsan_platform_linux.cpp

# if !SANITIZER_GO
   }
 #else
   if (vmaSize != 48) {
     Printf("FATAL: ThreadSanitizer: unsupported VMA range\n");
     Printf("FATAL: Found %zd - Supported 48\n", vmaSize);
     Die();
   }
 #endif
+#elif SANITIZER_LOONGARCH64
+# if !SANITIZER_GO
+  if (vmaSize != 47) {
+    Printf("FATAL: ThreadSanitizer: unsupported VMA range\n");
+    Printf("FATAL: Found %zd - Supported 47\n", vmaSize);
+    Die();
+  }
+# endif
 #elif defined(__powerpc64__)
 # if !SANITIZER_GO
   if (vmaSize != 44 && vmaSize != 46 && vmaSize != 47) {
     Printf("FATAL: ThreadSanitizer: unsupported VMA range\n");
     Printf("FATAL: Found %zd - Supported 44, 46, and 47\n", vmaSize);
     Die();
   }
 # else
# else
   return mangled_sp;
 # endif
 #elif defined(__aarch64__)
 # if SANITIZER_LINUX
   return mangled_sp ^ longjmp_xor_key;
 # else
   return mangled_sp;
 # endif
+#elif defined(__loongarch__)
+  return mangled_sp;
 #elif defined(__powerpc64__)
   // Reverse of:
   //   ld   r4, -28696(r13)
   //   xor  r4, r3, r4
   uptr xor_key;
   asm("ld  %0, -28696(%%r13)" : "=r" (xor_key));
   return mangled_sp ^ xor_key;
 #elif defined(__mips__)

 # ifdef __aarch64__
 #  define LONG_JMP_SP_ENV_SLOT 1
 # else
 #  define LONG_JMP_SP_ENV_SLOT 2
 # endif
 #elif SANITIZER_LINUX
 # ifdef __aarch64__
 #  define LONG_JMP_SP_ENV_SLOT 13
+# elif defined(__loongarch__)
+#  define LONG_JMP_SP_ENV_SLOT 1
 # elif defined(__mips64)
 #  define LONG_JMP_SP_ENV_SLOT 1
 # elif defined(__s390x__)
 #  define LONG_JMP_SP_ENV_SLOT 9
 # else
 #  define LONG_JMP_SP_ENV_SLOT 6
 # endif
 #endif

compiler-rt/lib/tsan/rtl/tsan_rtl.h

 #if SANITIZER_WORDSIZE != 64
 # error "ThreadSanitizer is supported only on 64-bit platforms"
 #endif
 
 namespace __tsan {
 
 #if !SANITIZER_GO
 struct MapUnmapCallback;
-#if defined(__mips64) || defined(__aarch64__) || defined(__powerpc__)
+#if defined(__mips64) || defined(__aarch64__) || defined(__loongarch__) || \
+    defined(__powerpc__)
 
 struct AP32 {
   static const uptr kSpaceBeg = 0;
   static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
   static const uptr kMetadataSize = 0;
   typedef __sanitizer::CompactSizeClassMap SizeClassMap;
   static const uptr kRegionSizeLog = 20;
   using AddressSpaceView = LocalAddressSpaceView;

compiler-rt/lib/tsan/rtl/tsan_rtl_loongarch64.S

+#include "sanitizer_common/sanitizer_asm.h"
+
+.section .text
+
+ASM_HIDDEN(__tsan_setjmp)
+.comm _ZN14__interception11real_setjmpE,8,8
+.globl ASM_SYMBOL_INTERCEPTOR(setjmp)
+ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(setjmp))
+ASM_SYMBOL_INTERCEPTOR(setjmp):
+  CFI_STARTPROC
+
+  // Save frame pointer and return address register
+  addi.d $sp, $sp, -32
+  st.d $ra, $sp, 24
+  st.d $fp, $sp, 16
+  CFI_DEF_CFA_OFFSET (32)
+  CFI_OFFSET (1, -8)
+  CFI_OFFSET (22, -16)
+
+  // Adjust the SP for previous frame
+  addi.d $fp, $sp, 32
+  CFI_DEF_CFA_REGISTER (22)
+
+  // Save env parameter
+  st.d $a0, $sp, 8
+  CFI_OFFSET (4, -24)
+
+  // Obtain SP, first argument to `void __tsan_setjmp(uptr sp)`
+  addi.d  $a0, $fp, 0
+
+  // call tsan interceptor
+  bl      ASM_SYMBOL(__tsan_setjmp)
+
+  // Restore env parameter
+  ld.d $a0, $sp, 8
+  CFI_RESTORE (4)
+
+  // Restore frame/link register
+  ld.d $fp, $sp, 16
+  ld.d $ra, $sp, 24
+  addi.d $sp, $sp, 32
+  CFI_RESTORE (22)
+  CFI_RESTORE (1)
+  CFI_DEF_CFA (3, 0)
+
+  // tail jump to libc setjmp
+  la.local $a1, _ZN14__interception11real_setjmpE
+  ld.d $a1, $a1, 0
+  jr $a1
+
+  CFI_ENDPROC
+ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(setjmp))
+
+.comm _ZN14__interception12real__setjmpE,8,8
+.globl ASM_SYMBOL_INTERCEPTOR(_setjmp)
+ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(_setjmp))
+ASM_SYMBOL_INTERCEPTOR(_setjmp):
+  CFI_STARTPROC
+
+  // Save frame pointer and return address register
+  addi.d $sp, $sp, -32
+  st.d $ra, $sp, 24
+  st.d $fp, $sp, 16
+  CFI_DEF_CFA_OFFSET (32)
+  CFI_OFFSET (1, -8)
+  CFI_OFFSET (22, -16)
+
+  // Adjust the SP for previous frame
+  addi.d $fp, $sp, 32
+  CFI_DEF_CFA_REGISTER (22)
+
+  // Save env parameter
+  st.d $a0, $sp, 8
+  CFI_OFFSET (4, -24)
+
+  // Obtain SP, first argument to `void __tsan_setjmp(uptr sp)`
+  addi.d  $a0, $fp, 0
+
+  // call tsan interceptor
+  bl      ASM_SYMBOL(__tsan_setjmp)
+
+  // Restore env parameter
+  ld.d $a0, $sp, 8
+  CFI_RESTORE (4)
+
+  // Restore frame/link register
+  ld.d $fp, $sp, 16
+  ld.d $ra, $sp, 24
+  addi.d $sp, $sp, 32
+  CFI_RESTORE (22)
+  CFI_RESTORE (1)
+  CFI_DEF_CFA (3, 0)
+
+  // tail jump to libc setjmp
+  la.local $a1, _ZN14__interception12real__setjmpE
+  ld.d $a1, $a1, 0
+  jr $a1
+
+  CFI_ENDPROC
+ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(_setjmp))
+
+.comm _ZN14__interception14real_sigsetjmpE,8,8
+.globl ASM_SYMBOL_INTERCEPTOR(sigsetjmp)
+ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(sigsetjmp))
+ASM_SYMBOL_INTERCEPTOR(sigsetjmp):
+  CFI_STARTPROC
+
+  // Save frame pointer and return address register
+  addi.d $sp, $sp, -32
+  st.d $ra, $sp, 24
+  st.d $fp, $sp, 16
+  CFI_DEF_CFA_OFFSET (32)
+  CFI_OFFSET (1, -8)
+  CFI_OFFSET (22, -16)
+
+  // Adjust the SP for previous frame
+  addi.d $fp, $sp, 32
+  CFI_DEF_CFA_REGISTER (22)
+
+  // Save env parameter
+  st.d $a0, $sp, 8
+  CFI_OFFSET (4, -24)
+
+  // Obtain SP, first argument to `void __tsan_setjmp(uptr sp)`
+  addi.d  $a0, $fp, 0
+
+  // call tsan interceptor
+  bl      ASM_SYMBOL(__tsan_setjmp)
+
+  // Restore env parameter
+  ld.d $a0, $sp, 8
+  CFI_RESTORE (4)
+
+  // Restore frame/link register
+  ld.d $fp, $sp, 16
+  ld.d $ra, $sp, 24
+  addi.d $sp, $sp, 32
+  CFI_RESTORE (22)
+  CFI_RESTORE (1)
+  CFI_DEF_CFA (3, 0)
+
+  // tail jump to libc setjmp
+  la.local $a1, _ZN14__interception14real_sigsetjmpE
+  ld.d $a1, $a1, 0
+  jr $a1
+
+  CFI_ENDPROC
+ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(sigsetjmp))
+
+.comm _ZN14__interception16real___sigsetjmpE,8,8
+.globl ASM_SYMBOL_INTERCEPTOR(__sigsetjmp)
+ASM_TYPE_FUNCTION(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))
+ASM_SYMBOL_INTERCEPTOR(__sigsetjmp):
+  CFI_STARTPROC
+
+  // Save frame pointer and return address register
+  addi.d $sp, $sp, -32
+  st.d $ra, $sp, 24
+  st.d $fp, $sp, 16
+  CFI_DEF_CFA_OFFSET (32)
+  CFI_OFFSET (1, -8)
+  CFI_OFFSET (22, -16)
+
+  // Adjust the SP for previous frame
+  addi.d $fp, $sp, 32
+  CFI_DEF_CFA_REGISTER (22)
+
+  // Save env parameter
+  st.d $a0, $sp, 8
+  CFI_OFFSET (4, -24)
+
+  // Obtain SP, first argument to `void __tsan_setjmp(uptr sp)`
+  addi.d  $a0, $fp, 0
+
+  // call tsan interceptor
+  bl      ASM_SYMBOL(__tsan_setjmp)
+
+  // Restore env parameter
+  ld.d $a0, $sp, 8
+  CFI_RESTORE (4)
+
+  // Restore frame/link register
+  ld.d $fp, $sp, 16
+  ld.d $ra, $sp, 24
+  addi.d $sp, $sp, 32
+  CFI_RESTORE (22)
+  CFI_RESTORE (1)
+  CFI_DEF_CFA (3, 0)
+
+  // tail jump to libc setjmp
+  la.local $a1, _ZN14__interception16real___sigsetjmpE
+  ld.d $a1, $a1, 0
+  jr $a1
+
+  CFI_ENDPROC
+ASM_SIZE(ASM_SYMBOL_INTERCEPTOR(__sigsetjmp))

compiler-rt/test/sanitizer_common/print_address.h

 #include <stdio.h>
 #include <stdarg.h>
 
 void print_address(const char *str, int n, ...) {
   fprintf(stderr, "%s", str);
   va_list ap;
   va_start(ap, n);
   while (n--) {
     void *p = va_arg(ap, void *);
-#if defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__) || \
-    defined(__s390x__) || (defined(__riscv) && __riscv_xlen == 64)
+#if defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__) ||   \
+    defined(__s390x__) || (defined(__riscv) && __riscv_xlen == 64) ||          \
+    defined(__loongarch_lp64)
     // On FreeBSD, the %p conversion specifier works as 0x%x and thus does not
     // match to the format used in the diagnotic message.
     fprintf(stderr, "0x%012lx ", (unsigned long) p);
 #elif defined(__i386__) || defined(__arm__)
     fprintf(stderr, "0x%08lx ", (unsigned long) p);
 #elif defined(__mips64)
     fprintf(stderr, "0x%010lx ", (unsigned long) p);
 #endif
   }
   fprintf(stderr, "\n");
 }

compiler-rt/test/tsan/map32bit.cpp

 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
 #include "test.h"
 #include <stdint.h>
 #include <errno.h>
 #include <sys/mman.h>
 
 // Test for issue:
 // https://github.com/google/sanitizers/issues/412
 
 // MAP_32BIT flag for mmap is supported only for x86_64.
 // XFAIL: mips
 // XFAIL: aarch64
 // XFAIL: powerpc64
 // XFAIL: s390x
+// XFAIL: loongarch64
 
 // MAP_32BIT doesn't exist on OS X and NetBSD.
 // UNSUPPORTED: darwin,netbsd
 
 void *Thread(void *ptr) {
   *(int*)ptr = 42;
   barrier_wait(&barrier);
   return 0;

compiler-rt/test/tsan/mmap_large.cpp

 // that, it was never implemented.  So just define it to zero.
 #undef  MAP_NORESERVE
 #define MAP_NORESERVE 0
 #endif
 
 int main() {
 #ifdef __x86_64__
   const size_t kLog2Size = 39;
-#elif defined(__mips64) || defined(__aarch64__)
+#elif defined(__mips64) || defined(__aarch64__) || defined(__loongarch_lp64)
   const size_t kLog2Size = 32;
 #elif defined(__powerpc64__)
   const size_t kLog2Size = 39;
 #elif defined(__s390x__)
   const size_t kLog2Size = 43;
 #endif
   const uintptr_t kLocation = 0x40ULL << kLog2Size;
   void *p = mmap(