From ed14271c9743490ebc4947ba7904adaa0d16e279 Mon Sep 17 00:00:00 2001
From: oharboe <oharboe>
Date: Thu, 1 May 2008 18:49:10 +0000
Subject: wip for interrupts

---
 zpu/hdl/zpu4/test/interrupt/build.sh |  4 ++++
 zpu/hdl/zpu4/test/interrupt/int.c    | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 zpu/hdl/zpu4/test/interrupt/build.sh
 create mode 100644 zpu/hdl/zpu4/test/interrupt/int.c

(limited to 'zpu/hdl/zpu4/test')

diff --git a/zpu/hdl/zpu4/test/interrupt/build.sh b/zpu/hdl/zpu4/test/interrupt/build.sh
new file mode 100644
index 0000000..3d617e9
--- /dev/null
+++ b/zpu/hdl/zpu4/test/interrupt/build.sh
@@ -0,0 +1,4 @@
+zpu-elf-gcc -O3 -phi `pwd`/int.c -o int.elf -Wl,--relax -Wl,--gc-sections  -g
+zpu-elf-objdump --disassemble-all >int.dis int.elf
+zpu-elf-objcopy -O binary int.elf int.bin
+java -classpath ../../../../sw/simulator/zpusim.jar com.zylin.zpu.simulator.tools.MakeRam int.bin >int.ram
diff --git a/zpu/hdl/zpu4/test/interrupt/int.c b/zpu/hdl/zpu4/test/interrupt/int.c
new file mode 100644
index 0000000..2be6483
--- /dev/null
+++ b/zpu/hdl/zpu4/test/interrupt/int.c
@@ -0,0 +1,32 @@
+/*
+ * Shows usage of interrupts. Goes along with zpu_core_small_wip.vhd.
+ */
+#include <stdio.h>
+
+
+int counter;
+
+/* Example of single, fixed interval non-maskable, nested interrupt */
+void  _zpu_interrupt(void)
+{
+	/* interrupts are enabled so we need to finish up quickly,
+	 * lest we will get infinite recursion!*/
+	counter++;
+}
+
+int main(int argc, char **argv)
+{
+	int t;
+	t=counter;
+	for (;;)
+	{
+		if (t==counter)
+		{
+			puts("No interrupt\n");
+		} else
+		{
+			puts("Got interrupt\n");
+		}
+	}
+    
+}
-- 
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