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authorGreg Ungerer <gerg@uclinux.org>2008-07-31 14:38:07 +1000
committerGreg Ungerer <gerg@uclinux.org>2008-08-07 15:36:16 +1000
commit58750139001bae11a1f9b074f3a9c774fecf5ba8 (patch)
treeecdafd4d8c3d2ef2cee7e512b7310552863a617c /arch/m68knommu/include/asm/thread_info.h
parent685d87f7ccc649ab92b55e18e507a65d0e694eb9 (diff)
Move all of include/asm-m68knommu to arch/m68knommu/include/asm.
With the current kbuild infrastructure in place no other changes are required for this to work. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/m68knommu/include/asm/thread_info.h')
-rw-r--r--arch/m68knommu/include/asm/thread_info.h98
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/m68knommu/include/asm/thread_info.h b/arch/m68knommu/include/asm/thread_info.h
new file mode 100644
index 00000000000..0c9bc095f3f
--- /dev/null
+++ b/arch/m68knommu/include/asm/thread_info.h
@@ -0,0 +1,98 @@
+/* thread_info.h: m68knommu low-level thread information
+ * adapted from the i386 and PPC versions by Greg Ungerer (gerg@snapgear.com)
+ *
+ * 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__
+
+/*
+ * Size of kernel stack for each process. This must be a power of 2...
+ */
+#ifdef CONFIG_4KSTACKS
+#define THREAD_SIZE_ORDER (0)
+#else
+#define THREAD_SIZE_ORDER (1)
+#endif
+
+/*
+ * for asm files, THREAD_SIZE is now generated by asm-offsets.c
+ */
+#define THREAD_SIZE (PAGE_SIZE<<THREAD_SIZE_ORDER)
+
+/*
+ * low level task data.
+ */
+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, \
+ .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__(
+ "move.l %%sp, %0 \n\t"
+ "and.l %1, %0"
+ : "=&d"(ti)
+ : "di" (~(THREAD_SIZE-1))
+ );
+ return ti;
+}
+
+#endif /* __ASSEMBLY__ */
+
+#define PREEMPT_ACTIVE 0x4000000
+
+/*
+ * thread information flag bit numbers
+ */
+#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_MEMDIE 4
+
+/* as above, but as bit values */
+#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_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_THREAD_INFO_H */