Add task control syscalls.

2 files changed, 28 insertions, 1 deletions

diff --git a/src/lib/makefile b/src/lib/makefile
index 9ea27377e..1071dc75e 100644
--- a/src/lib/makefile
+++ b/src/lib/makefile
@@ -1,7 +1,8 @@
 OBJDIR = ../../obj
 include ../../config.mk
 
-OBJS = string.o stdlib.o syscall_stub.o
+OBJS = string.o stdlib.o 
+OBJS += syscall_stub.o syscall_task.o
 OBJECTS = $(addprefix ${OBJDIR}/, ${OBJS})
 
 all: ${OBJECTS}
diff --git a/src/lib/syscall_task.C b/src/lib/syscall_task.C
new file mode 100644
index 000000000..bfd522933
--- /dev/null
+++ b/src/lib/syscall_task.C
@@ -0,0 +1,26 @@
+#include <sys/task.h>
+#include <kernel/task.H>
+
+using namespace Systemcalls;
+
+void task_yield()
+{
+    _syscall0(TASK_YIELD);
+    return;
+}
+
+int task_create(void(*fn)(void*), void* ptr)
+{
+    return (int64_t) _syscall2(TASK_START, (void*)fn, ptr);
+}
+
+void task_end()
+{
+    _syscall0(TASK_END); // no return.
+    return;
+}
+
+uint64_t task_gettid()
+{
+    return (uint64_t)_syscall0(TASK_GETTID);
+}