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Diffstat (limited to 'arch/m68k/include/asm/thread_info.h')
-rw-r--r--arch/m68k/include/asm/thread_info.h109
1 files changed, 106 insertions, 3 deletions
diff --git a/arch/m68k/include/asm/thread_info.h b/arch/m68k/include/asm/thread_info.h
index f31a3f42b7b3..1da5d53a00eb 100644
--- a/arch/m68k/include/asm/thread_info.h
+++ b/arch/m68k/include/asm/thread_info.h
@@ -1,5 +1,108 @@
-#ifdef __uClinux__
-#include "thread_info_no.h"
+#ifndef _ASM_M68K_THREAD_INFO_H
+#define _ASM_M68K_THREAD_INFO_H
+
+#include <asm/types.h>
+#include <asm/page.h>
+
+/*
+ * On machines with 4k pages we default to an 8k thread size, though we
+ * allow a 4k with config option. Any other machine page size then
+ * the thread size must match the page size (which is 8k and larger here).
+ */
+#if PAGE_SHIFT < 13
+#ifdef CONFIG_4KSTACKS
+#define THREAD_SIZE 4096
#else
-#include "thread_info_mm.h"
+#define THREAD_SIZE 8192
#endif
+#else
+#define THREAD_SIZE PAGE_SIZE
+#endif
+#define THREAD_SIZE_ORDER ((THREAD_SIZE / PAGE_SIZE) - 1)
+
+#ifndef __ASSEMBLY__
+
+struct thread_info {
+ struct task_struct *task; /* main task structure */
+ unsigned long flags;
+ struct exec_domain *exec_domain; /* execution domain */
+ int preempt_count; /* 0 => preemptable, <0 => BUG */
+ __u32 cpu; /* should always be 0 on m68k */
+ unsigned long tp_value; /* thread pointer */
+ struct restart_block restart_block;
+};
+#endif /* __ASSEMBLY__ */
+
+#define PREEMPT_ACTIVE 0x4000000
+
+#define INIT_THREAD_INFO(tsk) \
+{ \
+ .task = &tsk, \
+ .exec_domain = &default_exec_domain, \
+ .preempt_count = INIT_PREEMPT_COUNT, \
+ .restart_block = { \
+ .fn = do_no_restart_syscall, \
+ }, \
+}
+
+#define init_stack (init_thread_union.stack)
+
+#ifdef CONFIG_MMU
+
+#ifndef __ASSEMBLY__
+#include <asm/current.h>
+#endif
+
+#ifdef ASM_OFFSETS_C
+#define task_thread_info(tsk) ((struct thread_info *) NULL)
+#else
+#include <asm/asm-offsets.h>
+#define task_thread_info(tsk) ((struct thread_info *)((char *)tsk+TASK_TINFO))
+#endif
+
+#define init_thread_info (init_task.thread.info)
+#define task_stack_page(tsk) ((tsk)->stack)
+#define current_thread_info() task_thread_info(current)
+
+#define __HAVE_THREAD_FUNCTIONS
+
+#define setup_thread_stack(p, org) ({ \
+ *(struct task_struct **)(p)->stack = (p); \
+ task_thread_info(p)->task = (p); \
+})
+
+#define end_of_stack(p) ((unsigned long *)(p)->stack + 1)
+
+#else /* !CONFIG_MMU */
+
+#ifndef __ASSEMBLY__
+/* 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
+
+#define init_thread_info (init_thread_union.thread_info)
+
+#endif /* CONFIG_MMU */
+
+/* entry.S relies on these definitions!
+ * bits 0-7 are tested at every exception exit
+ * bits 8-15 are also tested at syscall exit
+ */
+#define TIF_SIGPENDING 6 /* signal pending */
+#define TIF_NEED_RESCHED 7 /* rescheduling necessary */
+#define TIF_DELAYED_TRACE 14 /* single step a syscall */
+#define TIF_SYSCALL_TRACE 15 /* syscall trace active */
+#define TIF_MEMDIE 16 /* is terminating due to OOM killer */
+#define TIF_FREEZE 17 /* thread is freezing for suspend */
+
+#endif /* _ASM_M68K_THREAD_INFO_H */