On Darwin, guard page accesses are raised as SIGBUS.

2018-12-04 21:57:48 -05:00
parent cfd28a7bc5
commit 0a2ecf5a1e
1 changed files with 3 additions and 2 deletions
--- a/lib/execute/signalhandlers/SignalHandlers.cpp
+++ b/lib/execute/signalhandlers/SignalHandlers.cpp
@@ -723,8 +723,9 @@ EnsureEagerSignalHandlers()
        abort();
    }

-# if defined(__arm__)
-    // On Arm Handle Unaligned Accesses
+# if defined(__arm__) || defined(__APPLE__)
+    // On ARM, handle Unaligned Accesses.
+    // On Darwin, guard page accesses are raised as SIGBUS.
    struct sigaction busHandler;
    busHandler.sa_flags = SA_SIGINFO | SA_NODEFER | SA_ONSTACK;
    busHandler.sa_sigaction = WasmTrapHandler;