1 files changed, 40 insertions, 0 deletions
diff --git a/toolkit/xre/nsSigHandlers.h b/toolkit/xre/nsSigHandlers.h
new file mode 100644
index 0000000000..f7424c026a
--- /dev/null
+++ b/toolkit/xre/nsSigHandlers.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || \
+    defined(__i386) || defined(__amd64__)
+
+/*
+ * x87 FPU Control Word:
+ *
+ * 0 -> IM  Invalid Operation
+ * 1 -> DM  Denormalized Operand
+ * 2 -> ZM  Zero Divide
+ * 3 -> OM  Overflow
+ * 4 -> UM  Underflow
+ * 5 -> PM  Precision
+ */
+#  define FPU_EXCEPTION_MASK 0x3f
+
+/*
+ * x86 FPU Status Word:
+ *
+ * 0..5  ->      Exception flags  (see x86 FPU Control Word)
+ * 6     -> SF   Stack Fault
+ * 7     -> ES   Error Summary Status
+ */
+#  define FPU_STATUS_FLAGS 0xff
+
+/*
+ * MXCSR Control and Status Register:
+ *
+ * 0..5  ->      Exception flags (see x86 FPU Control Word)
+ * 6     -> DAZ  Denormals Are Zero
+ * 7..12 ->      Exception mask (see x86 FPU Control Word)
+ */
+#  define SSE_STATUS_FLAGS FPU_EXCEPTION_MASK
+#  define SSE_EXCEPTION_MASK (FPU_EXCEPTION_MASK << 7)
+
+#endif