FreeBSD-specific porting work.

cgo/libmach remain unimplemented. However, compilers, runtime,
and packages are 100%. I still need to go through and implement
missing syscalls (at least make sure they're all listed), but
for all shipped functionality, this is done. Ship! ;)

R=rsc, VenkateshSrinivas
http://codereview.appspot.com/152142

Committer: Russ Cox <rsc@golang.org>

2 files changed, 47 insertions, 0 deletions

diff --git a/src/libcgo/Makefile b/src/libcgo/Makefile
index 0cd19fbba..254e4622d 100644
--- a/src/libcgo/Makefile
+++ b/src/libcgo/Makefile
@@ -16,6 +16,7 @@ CFLAGS_amd64=-m64
 
 LDFLAGS_linux=-shared -lpthread -lm
 LDFLAGS_darwin=-dynamiclib -Wl,-undefined,dynamic_lookup /usr/lib/libpthread.dylib
+LDFLAGS_freebsd=-pthread -shared -lm
 
 %.o: %.c
 	gcc $(CFLAGS_$(GOARCH)) -O2 -fPIC -o $@ -c $*.c
diff --git a/src/libcgo/freebsd_amd64.c b/src/libcgo/freebsd_amd64.c
new file mode 100644
index 000000000..14a409f5e
--- /dev/null
+++ b/src/libcgo/freebsd_amd64.c
@@ -0,0 +1,46 @@
+// 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*);
+
+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;
+
+	crosscall_amd64(ts.m, ts.g, ts.fn);
+	return nil;
+}