Merge pull request #1471 from xiaobo55x:syscall_test

PiperOrigin-RevId: 292445329

1 files changed, 14 insertions, 0 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