diff mbox series

[RFC,v5,09/21] um: nommu: host interface

Message ID c1c6be020d29b66678948e7a2c8abe2db90cb32f.1593697069.git.thehajime@gmail.com
State Superseded
Headers show
Series [RFC,v5,01/21] um: split build in kernel and host parts | expand

Commit Message

Hajime Tazaki July 2, 2020, 2:07 p.m. UTC 
This patch introduces the host operations that define the interface
between the LKL and the host. These operations must be provided either
by a host library or by the application itself.

Signed-off-by: Hajime Tazaki <thehajime@gmail.com>
---
 arch/um/include/asm/host_ops.h            |  9 ++++++++
 arch/um/nommu/include/uapi/asm/host_ops.h | 25 +++++++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 arch/um/include/asm/host_ops.h
 create mode 100644 arch/um/nommu/include/uapi/asm/host_ops.h
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Patch

diff --git a/arch/um/include/asm/host_ops.h b/arch/um/include/asm/host_ops.h
new file mode 100644
index 000000000000..f52423cc4ced
--- /dev/null
+++ b/arch/um/include/asm/host_ops.h
@@ -0,0 +1,9 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_LKL_HOST_OPS_H
+#define _ASM_LKL_HOST_OPS_H
+
+#include <uapi/asm/host_ops.h>
+
+extern struct lkl_host_operations *lkl_ops;
+
+#endif
diff --git a/arch/um/nommu/include/uapi/asm/host_ops.h b/arch/um/nommu/include/uapi/asm/host_ops.h
new file mode 100644
index 000000000000..d3dad11b459e
--- /dev/null
+++ b/arch/um/nommu/include/uapi/asm/host_ops.h
@@ -0,0 +1,25 @@ 
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __UM_NOMMU_UAPI_HOST_OPS_H
+#define __UM_NOMMU_UAPI_HOST_OPS_H
+
+/* Defined in {posix,nt}-host.c */
+struct lkl_mutex;
+struct lkl_sem;
+typedef unsigned long lkl_thread_t;
+struct lkl_jmp_buf {
+	unsigned long buf[128];
+};
+
+/**
+ * lkl_host_operations - host operations used by the Linux kernel
+ *
+ * These operations must be provided by a host library or by the application
+ * itself.
+ *
+ */
+struct lkl_host_operations {
+};
+
+void lkl_bug(const char *fmt, ...);
+
+#endif