1 files changed, 87 insertions, 0 deletions
diff --git a/include/asm-sh64/thread_info.h b/include/asm-sh64/thread_info.h
new file mode 100644
index 000000000000..e65f394da472
--- /dev/null
+++ b/include/asm-sh64/thread_info.h
@@ -0,0 +1,87 @@
+#ifndef __ASM_SH64_THREAD_INFO_H
+#define __ASM_SH64_THREAD_INFO_H
+
+/*
+ * SuperH 5 version
+ * Copyright (C) 2003  Paul Mundt
+ */
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+#include <asm/registers.h>
+
+/*
+ * low level task data that entry.S needs immediate access to
+ * - this struct should fit entirely inside of one cache line
+ * - this struct shares the supervisor stack pages
+ * - if the contents of this structure are changed, the assembly constants must also be changed
+ */
+struct thread_info {
+	struct task_struct	*task;		/* main task structure */
+	struct exec_domain	*exec_domain;	/* execution domain */
+	unsigned long		flags;		/* low level flags */
+	/* Put the 4 32-bit fields together to make asm offsetting easier. */
+	__s32			preempt_count; /* 0 => preemptable, <0 => BUG */
+	__u16			cpu;
+
+	mm_segment_t		addr_limit;
+	struct restart_block	restart_block;
+
+	__u8			supervisor_stack[0];
+};
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ */
+#define INIT_THREAD_INFO(tsk)			\
+{						\
+	.task		= &tsk,			\
+	.exec_domain	= &default_exec_domain,	\
+	.flags		= 0,			\
+	.cpu		= 0,			\
+	.preempt_count	= 1,			\
+	.addr_limit     = KERNEL_DS,            \
+	.restart_block	= {			\
+		.fn = do_no_restart_syscall,	\
+	},					\
+}
+
+#define init_thread_info	(init_thread_union.thread_info)
+#define init_stack		(init_thread_union.stack)
+
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+	struct thread_info *ti;
+
+	__asm__ __volatile__ ("getcon " __KCR0 ", %0\n\t" : "=r" (ti));
+
+	return ti;
+}
+
+/* thread information allocation */
+
+
+
+#define alloc_thread_info(ti) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1))
+#define free_thread_info(ti) free_pages((unsigned long) (ti), 1)
+#define get_thread_info(ti) get_task_struct((ti)->task)
+#define put_thread_info(ti) put_task_struct((ti)->task)
+
+#endif /* __ASSEMBLY__ */
+
+#define THREAD_SIZE  8192
+
+#define PREEMPT_ACTIVE		0x4000000
+
+/* thread information flags */
+#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
+#define TIF_SIGPENDING		2	/* signal pending */
+#define TIF_NEED_RESCHED	3	/* rescheduling necessary */
+#define TIF_MEMDIE		4
+
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_SH64_THREAD_INFO_H */