2 files changed, 15 insertions, 1 deletions
diff --git a/test/util/signal_util.h b/test/util/signal_util.h
index bcf85c337..e7b66aa51 100644
--- a/test/util/signal_util.h
+++ b/test/util/signal_util.h
@@ -85,6 +85,20 @@ inline void FixupFault(ucontext_t* ctx) {
   // The encoding is 0x48 0xab 0x00.
   ctx->uc_mcontext.gregs[REG_RIP] += 3;
 }
+#elif __aarch64__
+inline void Fault() {
+  // Zero and dereference x0.
+  asm("mov xzr, x0\r\n"
+      "str xzr, [x0]\r\n"
+      :
+      :
+      : "x0");
+}
+
+inline void FixupFault(ucontext_t* ctx) {
+  // Skip the bad instruction above.
+  ctx->uc_mcontext.pc += 4;
+}
 #endif
 
 }  // namespace testing
diff --git a/test/util/test_util.cc b/test/util/test_util.cc
index 848504c88..a4f78eec2 100644
--- a/test/util/test_util.cc
+++ b/test/util/test_util.cc
@@ -76,7 +76,6 @@ bool IsRunningWithHostinet() {
       "xchg %%rdi, %%rbx\n"                \
       : "=a"(a), "=D"(b), "=c"(c), "=d"(d) \
       : "a"(a_inp), "2"(c_inp))
-#endif  // defined(__x86_64__)
 
 CPUVendor GetCPUVendor() {
   uint32_t eax, ebx, ecx, edx;
@@ -93,6 +92,7 @@ CPUVendor GetCPUVendor() {
   }
   return CPUVendor::kUnknownVendor;
 }
+#endif  // defined(__x86_64__)
 
 bool operator==(const KernelVersion& first, const KernelVersion& second) {
   return first.major == second.major && first.minor == second.minor &&