Imported Upstream version 2012.01.27upstream-weekly/2012.01.27

1 files changed, 51 insertions, 0 deletions

diff --git a/src/pkg/runtime/cgo/gcc_util.c b/src/pkg/runtime/cgo/gcc_util.c
new file mode 100644
index 000000000..e06b6f64d
--- /dev/null
+++ b/src/pkg/runtime/cgo/gcc_util.c
@@ -0,0 +1,51 @@
+// 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 "libcgo.h"
+
+/* Stub for calling malloc from Go */
+static void
+x_cgo_malloc(void *p)
+{
+	struct a {
+		long long n;
+		void *ret;
+	} *a = p;
+
+	a->ret = malloc(a->n);
+}
+
+void (*_cgo_malloc)(void*) = x_cgo_malloc;
+
+/* Stub for calling free from Go */
+static void
+x_cgo_free(void *p)
+{
+	struct a {
+		void *arg;
+	} *a = p;
+
+	free(a->arg);
+}
+
+void (*_cgo_free)(void*) = x_cgo_free;
+
+/* Stub for creating a new thread */
+static void
+xlibcgo_thread_start(ThreadStart *arg)
+{
+	ThreadStart *ts;
+
+	/* Make our own copy that can persist after we return. */
+	ts = malloc(sizeof *ts);
+	if(ts == nil) {
+		fprintf(stderr, "runtime/cgo: out of memory in thread_start\n");
+		abort();
+	}
+	*ts = *arg;
+
+	libcgo_sys_thread_start(ts);	/* OS-dependent half */
+}
+
+void (*libcgo_thread_start)(ThreadStart*) = xlibcgo_thread_start;