1 files changed, 109 insertions, 0 deletions

diff --git a/include/asm-h8300/thread_info.h b/include/asm-h8300/thread_info.h
new file mode 100644
index 000000000000..b07c9344776f
--- /dev/null
+++ b/include/asm-h8300/thread_info.h
@@ -0,0 +1,109 @@
+/* thread_info.h: h8300 low-level thread information
+ * adapted from the i386 and PPC versions by Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ * Copyright (C) 2002  David Howells (dhowells@redhat.com)
+ * - Incorporating suggestions made by Linus Torvalds and Dave Miller
+ */
+
+#ifndef _ASM_THREAD_INFO_H
+#define _ASM_THREAD_INFO_H
+
+#include <asm/page.h>
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+/*
+ * low level task data.
+ * If you change this, change the TI_* offsets below to match.
+ */
+struct thread_info {
+        struct task_struct *task;               /* main task structure */
+        struct exec_domain *exec_domain;        /* execution domain */
+        unsigned long      flags;               /* low level flags */
+        int                cpu;                 /* cpu we're on */
+        int                preempt_count;       /* 0 => preemptable, <0 => BUG*/
+        struct restart_block restart_block;
+};
+
+/*
+ * 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,                     \
+        .restart_block  = {                     \
+                .fn = do_no_restart_syscall,    \
+        },                                      \
+}
+
+#define init_thread_info        (init_thread_union.thread_info)
+#define init_stack              (init_thread_union.stack)
+
+
+/*
+ * Size of kernel stack for each process. This must be a power of 2...
+ */
+#define THREAD_SIZE             8192    /* 2 pages */
+
+
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+        struct thread_info *ti;
+        __asm__(
+                "mov.l  sp, %0 \n\t"
+                "and.l  %1, %0"
+                : "=&r"(ti)
+                : "i" (~(THREAD_SIZE-1))
+                );
+        return ti;
+}
+
+/* thread information allocation */
+#define alloc_thread_info(tsk) ((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__ */
+
+/*
+ * Offsets in thread_info structure, used in assembly code
+ */
+#define TI_TASK         0
+#define TI_EXECDOMAIN   4
+#define TI_FLAGS        8
+#define TI_CPU          12
+#define TI_PRE_COUNT    16
+
+#define PREEMPT_ACTIVE  0x4000000
+
+/*
+ * thread information flag bit numbers
+ */
+#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_POLLING_NRFLAG      4       /* true if poll_idle() is polling
+                                           TIF_NEED_RESCHED */
+#define TIF_MEMDIE              5
+
+/* as above, but as bit values */
+#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_POLLING_NRFLAG     (1<<TIF_POLLING_NRFLAG)
+
+#define _TIF_WORK_MASK          0x0000FFFE      /* work to do on interrupt/exception return */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_THREAD_INFO_H */