auto import from //depot/cupcake/@135843

1 files changed, 48 insertions, 0 deletions

diff --git a/hw/arm_pic.c b/hw/arm_pic.c
new file mode 100644
index 0000000..1fe55b7
--- /dev/null
+++ b/hw/arm_pic.c
@@ -0,0 +1,48 @@
+/*
+ * Generic ARM Programmable Interrupt Controller support.
+ *
+ * Copyright (c) 2006 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licenced under the LGPL
+ */
+
+#include "hw.h"
+#include "arm-misc.h"
+
+/* Stub functions for hardware that doesn't exist.  */
+void pic_info(void)
+{
+}
+
+void irq_info(void)
+{
+}
+
+
+/* Input 0 is IRQ and input 1 is FIQ.  */
+static void arm_pic_cpu_handler(void *opaque, int irq, int level)
+{
+    CPUState *env = (CPUState *)opaque;
+    switch (irq) {
+    case ARM_PIC_CPU_IRQ:
+        if (level)
+            cpu_interrupt(env, CPU_INTERRUPT_HARD);
+        else
+            cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
+        break;
+    case ARM_PIC_CPU_FIQ:
+        if (level)
+            cpu_interrupt(env, CPU_INTERRUPT_FIQ);
+        else
+            cpu_reset_interrupt(env, CPU_INTERRUPT_FIQ);
+        break;
+    default:
+        cpu_abort(env, "arm_pic_cpu_handler: Bad interrput line %d\n", irq);
+    }
+}
+
+qemu_irq *arm_pic_init_cpu(CPUState *env)
+{
+    return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);
+}