1 files changed, 115 insertions, 0 deletions

diff --git a/arch/avr32/include/asm/thread_info.h b/arch/avr32/include/asm/thread_info.h
new file mode 100644
index 000000000000..294b25f9323d
--- /dev/null
+++ b/arch/avr32/include/asm/thread_info.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_AVR32_THREAD_INFO_H
+#define __ASM_AVR32_THREAD_INFO_H
+
+#include <asm/page.h>
+
+#define THREAD_SIZE_ORDER       1
+#define THREAD_SIZE             (PAGE_SIZE << THREAD_SIZE_ORDER)
+
+#ifndef __ASSEMBLY__
+#include <asm/types.h>
+
+struct task_struct;
+struct exec_domain;
+
+struct thread_info {
+        struct task_struct      *task;          /* main task structure */
+        struct exec_domain      *exec_domain;   /* execution domain */
+        unsigned long           flags;          /* low level flags */
+        __u32                   cpu;
+        __s32                   preempt_count;  /* 0 => preemptable, <0 => BUG */
+        __u32                   rar_saved;      /* return address... */
+        __u32                   rsr_saved;      /* ...and status register
+                                                   saved by debug handler
+                                                   when setting up
+                                                   trampoline */
+        struct restart_block    restart_block;
+        __u8                    supervisor_stack[0];
+};
+
+#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)
+
+/*
+ * Get the thread information struct from C.
+ * We do the usual trick and use the lower end of the stack for this
+ */
+static inline struct thread_info *current_thread_info(void)
+{
+        unsigned long addr = ~(THREAD_SIZE - 1);
+
+        asm("and %0, sp" : "=r"(addr) : "0"(addr));
+        return (struct thread_info *)addr;
+}
+
+#define get_thread_info(ti) get_task_struct((ti)->task)
+#define put_thread_info(ti) put_task_struct((ti)->task)
+
+#endif /* !__ASSEMBLY__ */
+
+#define PREEMPT_ACTIVE          0x40000000
+
+/*
+ * 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_SIGPENDING          1       /* signal pending */
+#define TIF_NEED_RESCHED        2       /* rescheduling necessary */
+#define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling
+                                           TIF_NEED_RESCHED */
+#define TIF_BREAKPOINT          4       /* enter monitor mode on return */
+#define TIF_SINGLE_STEP         5       /* single step in progress */
+#define TIF_MEMDIE              6
+#define TIF_RESTORE_SIGMASK     7       /* restore signal mask in do_signal */
+#define TIF_CPU_GOING_TO_SLEEP  8       /* CPU is entering sleep 0 mode */
+#define TIF_FREEZE              29
+#define TIF_DEBUG               30      /* debugging enabled */
+#define TIF_USERSPACE           31      /* true if FS sets userspace */
+
+#define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)
+#define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
+#define _TIF_SINGLE_STEP        (1 << TIF_SINGLE_STEP)
+#define _TIF_MEMDIE             (1 << TIF_MEMDIE)
+#define _TIF_RESTORE_SIGMASK    (1 << TIF_RESTORE_SIGMASK)
+#define _TIF_CPU_GOING_TO_SLEEP (1 << TIF_CPU_GOING_TO_SLEEP)
+
+/* Note: The masks below must never span more than 16 bits! */
+
+/* work to do on interrupt/exception return */
+#define _TIF_WORK_MASK                          \
+        ((1 << TIF_SIGPENDING)                  \
+         | (1 << TIF_NEED_RESCHED)              \
+         | (1 << TIF_POLLING_NRFLAG)            \
+         | (1 << TIF_BREAKPOINT)                \
+         | (1 << TIF_RESTORE_SIGMASK))
+
+/* work to do on any return to userspace */
+#define _TIF_ALLWORK_MASK       (_TIF_WORK_MASK | (1 << TIF_SYSCALL_TRACE))
+/* work to do on return from debug mode */
+#define _TIF_DBGWORK_MASK       (_TIF_WORK_MASK & ~(1 << TIF_BREAKPOINT))
+
+#endif /* __ASM_AVR32_THREAD_INFO_H */