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-rw-r--r--usr/rsc/fib/gcc.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/usr/rsc/fib/gcc.c b/usr/rsc/fib/gcc.c
new file mode 100644
index 000000000..a89839031
--- /dev/null
+++ b/usr/rsc/fib/gcc.c
@@ -0,0 +1,34 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include <stdint.h>
+
+typedef int32_t int32;
+
+static int32
+fib1(int32 n)
+{
+ int32 a, b, t;
+
+ a = 0;
+ b = 1;
+ for(; n>0; n--) {
+ t = a;
+ a = b;
+ b += t;
+ }
+ return a;
+}
+
+void
+fib(void *v)
+{
+ struct { // 6g func(n int) int
+ int32 n;
+ int32 pad;
+ int32 ret;
+ } *args = v;
+
+ args->ret = fib1(args->n);
+}