1 files changed, 47 insertions, 0 deletions
diff --git a/contrib/bug216610/package_fns.sh b/contrib/bug216610/package_fns.sh
new file mode 100755
index 0000000..0f4b91c
--- /dev/null
+++ b/contrib/bug216610/package_fns.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+#
+# Generate some Go code to make calling into the C code of the .syso
+# file easier.
+
+package="${1}"
+syso="${2}"
+
+if [[ -z "${syso}" ]]; then
+    echo "usage: $0 <package> <.....syso>" >&2
+    exit 1
+fi
+
+if [[ "${syso%.syso}" == "${syso}" ]]; then
+    echo "2nd argument should be a .syso file" >&2
+    exit 1
+fi
+
+cat<<EOF
+package ${package}
+
+import (
+	"unsafe"
+)
+
+// syso is how we call, indirectly, into the C-code.
+func syso(cFn, state unsafe.Pointer)
+
+type sysoCaller struct {
+	ptr unsafe.Pointer
+}
+
+// call calls the syso linked C-function, $sym().
+func (s *sysoCaller) call(data unsafe.Pointer) {
+	syso(s.ptr, data)
+}
+EOF
+
+for sym in $(objdump -x "${syso}" | grep -F 'g     F' | awk '{print $6}'); do
+    cat<<EOF
+
+//go:linkname _${sym} ${sym}
+var _${sym} byte
+var syso__${sym} = &sysoCaller{ptr: unsafe.Pointer(&_${sym})}
+
+EOF
+done