1 files changed, 77 insertions, 0 deletions
diff --git a/sys/compat/cloudabi32/cloudabi32_thread.c b/sys/compat/cloudabi32/cloudabi32_thread.c
new file mode 100644
index 0000000..50538d9
--- /dev/null
+++ b/sys/compat/cloudabi32/cloudabi32_thread.c
@@ -0,0 +1,77 @@
+/*-
+ * Copyright (c) 2015 Nuxi, https://nuxi.nl/
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/systm.h>
+
+#include <contrib/cloudabi/cloudabi32_types.h>
+
+#include <compat/cloudabi32/cloudabi32_proto.h>
+#include <compat/cloudabi32/cloudabi32_util.h>
+
+struct thread_create_args {
+	cloudabi32_threadattr_t attr;
+	uint32_t tcb;
+	lwpid_t tid;
+};
+
+static int
+initialize_thread(struct thread *td, void *thunk)
+{
+	struct thread_create_args *args = thunk;
+
+	/* Save the thread ID, so it can be returned. */
+	args->tid = td->td_tid;
+
+	/* Set up initial register contents. */
+	return (cloudabi32_thread_setregs(td, &args->attr, args->tcb));
+}
+
+int
+cloudabi32_sys_thread_create(struct thread *td,
+    struct cloudabi32_sys_thread_create_args *uap)
+{
+	struct thread_create_args args;
+	int error;
+
+	error = copyin(uap->attr, &args.attr, sizeof(args.attr));
+	if (error != 0)
+		return (error);
+
+	/* Remove some space on the top of the stack for the TCB. */
+	args.tcb = rounddown(args.attr.stack + args.attr.stack_size -
+	    sizeof(cloudabi32_tcb_t), _Alignof(cloudabi32_tcb_t));
+	args.attr.stack_size = args.tcb - args.attr.stack;
+
+	error = thread_create(td, NULL, initialize_thread, &args);
+	if (error != 0)
+		return (error);
+	td->td_retval[0] = args.tid;
+	return (0);
+}