FreeBSD/i386 work

This patchset gets Go to pretty much the same state that
FreeBSD/amd64 is in.

R=rsc
http://codereview.appspot.com/157055

Committer: Russ Cox <rsc@golang.org>

1 files changed, 59 insertions, 0 deletions

diff --git a/src/libcgo/freebsd_386.c b/src/libcgo/freebsd_386.c
new file mode 100644
index 000000000..1f596f861
--- /dev/null
+++ b/src/libcgo/freebsd_386.c
@@ -0,0 +1,59 @@
+// 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 <pthread.h>
+#include "libcgo.h"
+
+static void* threadentry(void*);
+static pthread_key_t k1, k2;
+
+/* gccism: arrange for inittls to be called at dynamic load time */
+static void inittls(void) __attribute__((constructor));
+
+static void
+inittls(void)
+{
+	/* unimplemented for now */
+}
+
+void
+initcgo(void)
+{
+}
+
+void
+libcgo_sys_thread_start(ThreadStart *ts)
+{
+	pthread_attr_t attr;
+	pthread_t p;
+	size_t size;
+
+	pthread_attr_init(&attr);
+	pthread_attr_getstacksize(&attr, &size);
+	ts->g->stackguard = size;
+	pthread_create(&p, &attr, threadentry, ts);
+}
+
+static void*
+threadentry(void *v)
+{
+	ThreadStart ts;
+
+	ts = *(ThreadStart*)v;
+	free(v);
+
+	ts.g->stackbase = (uintptr)&ts;
+
+	/*
+	 * libcgo_sys_thread_start set stackguard to stack size;
+	 * change to actual guard pointer.
+	 */
+	ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096;
+
+	pthread_setspecific(k1, (void*)ts.g);
+	pthread_setspecific(k2, (void*)ts.m);
+
+	crosscall_386(ts.fn);
+	return nil;
+}