1 files changed, 55 insertions, 0 deletions
diff --git a/libgloss/sparc_leon/catch_interrupt_mvt.c b/libgloss/sparc_leon/catch_interrupt_mvt.c
new file mode 100644
index 000000000..da0332a17
--- /dev/null
+++ b/libgloss/sparc_leon/catch_interrupt_mvt.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2011 Aeroflex Gaisler
+ *
+ * BSD license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#include <asm-leon/leonstack.h>
+#include <asm-leon/irq.h>
+#define NULL 0
+
+
+/* multi vector trapping version of trap handler installs */
+int
+mvtlolevelirqinstall (int irqnr, void (*handler) ())
+{
+  unsigned long h = (unsigned long) handler;
+  unsigned long *addr =
+    (unsigned long *) ((locore_readtbr () & ~0xFFF) + 0x100 + (16 * irqnr));
+
+  if (irqnr == 0 || irqnr >= 15)
+    {
+      return 0;
+    }
+
+  addr[0] = ((h >> 10) & 0x3fffff) | 0x29000000;	/* 29000000: sethi   %hi(handler), %l4       */
+  addr[1] = ((h) & 0x3ff) | 0x81c52000;	/* 81c52000: jmpl    %l4 + %lo(handler), %g0 */
+  addr[2] = 0x01000000;		/* 01000000: nop */
+  addr[3] = 0x01000000;		/* 01000000: nop */
+  return 1;
+}
+
+int
+lolevelirqinstall (int irqnr, void (*handler) ())
+{
+  return mvtlolevelirqinstall (irqnr, handler);
+}