1 files changed, 102 insertions, 0 deletions
diff --git a/include/asm-sh/thread_info.h b/include/asm-sh/thread_info.h
new file mode 100644
index 0000000..d82f883
--- /dev/null
+++ b/include/asm-sh/thread_info.h
@@ -0,0 +1,102 @@
+#ifndef __ASM_SH_THREAD_INFO_H
+#define __ASM_SH_THREAD_INFO_H
+
+/* SuperH version
+ * Copyright (C) 2002  Niibe Yutaka
+ *
+ * The copyright of original i386 version is:
+ *
+ *  Copyright (C) 2002  David Howells (dhowells@redhat.com)
+ *  - Incorporating suggestions made by Linus Torvalds and Dave Miller
+ */
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+#include <asm/processor.h>
+
+struct thread_info {
+	struct task_struct	*task;		/* main task structure */
+	struct exec_domain	*exec_domain;	/* execution domain */
+	__u32			flags;		/* low level flags */
+	__u32			cpu;
+	__s32			preempt_count; /* 0 => preemptable, <0 => BUG */
+	struct restart_block	restart_block;
+	__u8			supervisor_stack[0];
+};
+
+#endif
+
+#define PREEMPT_ACTIVE		0x4000000
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ */
+#ifndef __ASSEMBLY__
+#define INIT_THREAD_INFO(tsk)			\
+{						\
+	.task		= &tsk,			\
+	.exec_domain	= &default_exec_domain,	\
+	.flags		= 0,			\
+	.cpu		= 0,			\
+	.preempt_count	= 1,			\
+	.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__("stc	r7_bank, %0" : "=r" (ti));
+	return ti;
+}
+
+/* thread information allocation */
+#define THREAD_SIZE (2*PAGE_SIZE)
+#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)
+
+#else /* !__ASSEMBLY__ */
+
+/* how to get the thread information struct from ASM */
+#define GET_THREAD_INFO(reg) \
+	stc	r7_bank, reg
+
+#endif
+
+/*
+ * thread information flags
+ * - these are process state flags that various assembly files may need to access
+ * - pending work-to-be-done flags are in LSW
+ * - other flags in MSW
+ */
+#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
+#define TIF_NOTIFY_RESUME	1	/* resumption notification requested */
+#define TIF_SIGPENDING		2	/* signal pending */
+#define TIF_NEED_RESCHED	3	/* rescheduling necessary */
+#define TIF_USEDFPU		16	/* FPU was used by this task this quantum (SMP) */
+#define TIF_POLLING_NRFLAG	17	/* true if poll_idle() is polling TIF_NEED_RESCHED */
+#define TIF_MEMDIE		18
+#define TIF_USERSPACE		31	/* true if FS sets userspace */
+
+#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
+#define _TIF_USEDFPU		(1<<TIF_USEDFPU)
+#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
+#define _TIF_USERSPACE		(1<<TIF_USERSPACE)
+
+#define _TIF_WORK_MASK		0x000000FE	/* work to do on interrupt/exception return */
+#define _TIF_ALLWORK_MASK	0x000000FF	/* work to do on any return to u-space */
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_SH_THREAD_INFO_H */