add sleep syscall

+ Sets the current core to sleep

3 files changed, 16 insertions, 0 deletions

diff --git a/include/kmi/power.h b/include/kmi/power.h
index d11b9d1..db00999 100644
--- a/include/kmi/power.h
+++ b/include/kmi/power.h
@@ -35,4 +35,12 @@ enum poweroff_type {
  */
 stat_t poweroff(enum poweroff_type type);
 
+/**
+ * Set the current core to sleep.
+ *
+ * @return Nothing on success (we should be sleeping),
+ * \ref ERR_MISC if sleep was not successful
+ */
+stat_t sleep();
+
 #endif
diff --git a/include/kmi/syscalls.h b/include/kmi/syscalls.h
index 1de4fb2..e503709 100644
--- a/include/kmi/syscalls.h
+++ b/include/kmi/syscalls.h
@@ -142,6 +142,9 @@ enum {
 	/** Shutdown, reboot, etc. */
 	SYS_POWEROFF,
 
+	/** Set this core to sleep. */
+	SYS_SLEEP,
+
 	/** Request to handle IRQ. */
 	SYS_IRQ_REQ,
 
diff --git a/include/kmi/uapi.h b/include/kmi/uapi.h
index 40cfae4..d1d3a38 100644
--- a/include/kmi/uapi.h
+++ b/include/kmi/uapi.h
@@ -764,6 +764,11 @@ SYSCALL_DECLARE3(clear_cap, tid, off, cap);
 SYSCALL_DECLARE1(poweroff, type);
 
 /**
+ * Sets the current core to sleep. Might take parameters in the future if there
+ * arises a need for different levels of sleep, but for now zero params. */
+SYSCALL_DECLARE0(sleep);
+
+/**
  * Request to handle IRQ.
  *
  * @param t Current tcb.