1 files changed, 118 insertions, 0 deletions
diff --git a/include/asm-m68k/thread_info.h b/include/asm-m68k/thread_info.h
new file mode 100644
index 00000000000..5f58939c59d
--- /dev/null
+++ b/include/asm-m68k/thread_info.h
@@ -0,0 +1,118 @@
+#ifndef _ASM_M68K_THREAD_INFO_H
+#define _ASM_M68K_THREAD_INFO_H
+
+#include <asm/types.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+
+struct thread_info {
+	struct task_struct	*task;		/* main task structure */
+	struct exec_domain	*exec_domain;	/* execution domain */
+	__s32			preempt_count; /* 0 => preemptable, <0 => BUG */
+	__u32 cpu; /* should always be 0 on m68k */
+	struct restart_block    restart_block;
+
+	__u8			supervisor_stack[0];
+};
+
+#define PREEMPT_ACTIVE		0x4000000
+
+#define INIT_THREAD_INFO(tsk)			\
+{						\
+	.task		= &tsk,			\
+	.exec_domain	= &default_exec_domain,	\
+	.restart_block = {			\
+		.fn = do_no_restart_syscall,	\
+	},					\
+}
+
+/* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */
+#if PAGE_SHIFT == 13 /* 8k machines */
+#define alloc_thread_info(tsk)   ((struct thread_info *)__get_free_pages(GFP_KERNEL,0))
+#define free_thread_info(ti)  free_pages((unsigned long)(ti),0)
+#else /* otherwise assume 4k pages */
+#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)
+#endif /* PAGE_SHIFT == 13 */
+
+//#define init_thread_info	(init_task.thread.info)
+#define init_stack		(init_thread_union.stack)
+
+#define current_thread_info()	(current->thread_info)
+
+
+#define __HAVE_THREAD_FUNCTIONS
+
+#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
+#define TIF_DELAYED_TRACE	1	/* single step a syscall */
+#define TIF_NOTIFY_RESUME	2	/* resumption notification requested */
+#define TIF_SIGPENDING		3	/* signal pending */
+#define TIF_NEED_RESCHED	4	/* rescheduling necessary */
+#define TIF_MEMDIE		5
+
+extern int thread_flag_fixme(void);
+
+/*
+ * flag set/clear/test wrappers
+ * - pass TIF_xxxx constants to these functions
+ */
+
+#define __set_tsk_thread_flag(tsk, flag, val) ({	\
+	switch (flag) {					\
+	case TIF_SIGPENDING:				\
+		tsk->thread.work.sigpending = val;	\
+		break;					\
+	case TIF_NEED_RESCHED:				\
+		tsk->thread.work.need_resched = val;	\
+		break;					\
+	case TIF_SYSCALL_TRACE:				\
+		tsk->thread.work.syscall_trace = val;	\
+		break;					\
+	case TIF_MEMDIE:				\
+		tsk->thread.work.memdie = val;		\
+		break;					\
+	default:					\
+		thread_flag_fixme();			\
+	}						\
+})
+
+#define __get_tsk_thread_flag(tsk, flag) ({		\
+	int ___res;					\
+	switch (flag) {					\
+	case TIF_SIGPENDING:				\
+		___res = tsk->thread.work.sigpending;	\
+		break;					\
+	case TIF_NEED_RESCHED:				\
+		___res = tsk->thread.work.need_resched;	\
+		break;					\
+	case TIF_SYSCALL_TRACE:				\
+		___res = tsk->thread.work.syscall_trace;\
+		break;					\
+	case TIF_MEMDIE:				\
+		___res = tsk->thread.work.memdie;\
+		break;					\
+	default:					\
+		___res = thread_flag_fixme();		\
+	}						\
+	___res;						\
+})
+
+#define __get_set_tsk_thread_flag(tsk, flag, val) ({	\
+	int __res = __get_tsk_thread_flag(tsk, flag);	\
+	__set_tsk_thread_flag(tsk, flag, val);		\
+	__res;						\
+})
+
+#define set_tsk_thread_flag(tsk, flag) __set_tsk_thread_flag(tsk, flag, ~0)
+#define clear_tsk_thread_flag(tsk, flag) __set_tsk_thread_flag(tsk, flag, 0)
+#define test_and_set_tsk_thread_flag(tsk, flag) __get_set_tsk_thread_flag(tsk, flag, ~0)
+#define test_tsk_thread_flag(tsk, flag) __get_tsk_thread_flag(tsk, flag)
+
+#define set_thread_flag(flag) set_tsk_thread_flag(current, flag)
+#define clear_thread_flag(flag) clear_tsk_thread_flag(current, flag)
+#define test_thread_flag(flag) test_tsk_thread_flag(current, flag)
+
+#define set_need_resched() set_thread_flag(TIF_NEED_RESCHED)
+#define clear_need_resched() clear_thread_flag(TIF_NEED_RESCHED)
+
+#endif	/* _ASM_M68K_THREAD_INFO_H */