sh: migrate to arch/sh/include/

This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac.

Most of the moving about was done with Sam's directions at:

http://marc.info/?l=linux-sh&m=121724823706062&w=2

with subsequent hacking and fixups entirely my fault.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 141 insertions, 0 deletions

diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h
new file mode 100644
index 000000000000..eeb4c747119e
--- /dev/null
+++ b/arch/sh/include/asm/thread_info.h
@@ -0,0 +1,141 @@
+#ifndef __ASM_SH_THREAD_INFO_H
+#define __ASM_SH_THREAD_INFO_H
+
+/* SuperH version
+ * Copyright (C) 2002  Niibe Yutaka
+ *
+ * The copyright of original i386 version is:
+ *
+ *  Copyright (C) 2002  David Howells (dhowells@redhat.com)
+ *  - Incorporating suggestions made by Linus Torvalds and Dave Miller
+ */
+#ifdef __KERNEL__
+#include <asm/page.h>
+
+#ifndef __ASSEMBLY__
+#include <asm/processor.h>
+
+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;
+	int			preempt_count; /* 0 => preemptable, <0 => BUG */
+	mm_segment_t		addr_limit;	/* thread address space */
+	struct restart_block	restart_block;
+	unsigned long		previous_sp;	/* sp of previous stack in case
+						   of nested IRQ stacks */
+	__u8			supervisor_stack[0];
+};
+
+#endif
+
+#define PREEMPT_ACTIVE		0x10000000
+
+#if defined(CONFIG_4KSTACKS)
+#define THREAD_SIZE_ORDER	(0)
+#elif defined(CONFIG_PAGE_SIZE_4KB)
+#define THREAD_SIZE_ORDER	(1)
+#elif defined(CONFIG_PAGE_SIZE_8KB)
+#define THREAD_SIZE_ORDER	(1)
+#elif defined(CONFIG_PAGE_SIZE_16KB)
+#define THREAD_SIZE_ORDER	(0)
+#elif defined(CONFIG_PAGE_SIZE_64KB)
+#define THREAD_SIZE_ORDER	(0)
+#else
+#error "Unknown thread size"
+#endif
+
+#define THREAD_SIZE	(PAGE_SIZE << THREAD_SIZE_ORDER)
+#define STACK_WARN	(THREAD_SIZE >> 3)
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ */
+#ifndef __ASSEMBLY__
+#define INIT_THREAD_INFO(tsk)			\
+{						\
+	.task		= &tsk,			\
+	.exec_domain	= &default_exec_domain,	\
+	.flags		= 0,			\
+	.cpu		= 0,			\
+	.preempt_count	= 1,			\
+	.addr_limit	= KERNEL_DS,		\
+	.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 current stack pointer from C */
+register unsigned long current_stack_pointer asm("r15") __used;
+
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+	struct thread_info *ti;
+#if defined(CONFIG_SUPERH64)
+	__asm__ __volatile__ ("getcon	cr17, %0" : "=r" (ti));
+#elif defined(CONFIG_CPU_HAS_SR_RB)
+	__asm__ __volatile__ ("stc	r7_bank, %0" : "=r" (ti));
+#else
+	unsigned long __dummy;
+
+	__asm__ __volatile__ (
+		"mov	r15, %0\n\t"
+		"and	%1, %0\n\t"
+		: "=&r" (ti), "=r" (__dummy)
+		: "1" (~(THREAD_SIZE - 1))
+		: "memory");
+#endif
+
+	return ti;
+}
+
+#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
+
+/* thread information allocation */
+#ifdef CONFIG_DEBUG_STACK_USAGE
+#define alloc_thread_info(ti)	kzalloc(THREAD_SIZE, GFP_KERNEL)
+#else
+#define alloc_thread_info(ti)	kmalloc(THREAD_SIZE, GFP_KERNEL)
+#endif
+#define free_thread_info(ti)	kfree(ti)
+
+#endif /* __ASSEMBLY__ */
+
+/*
+ * 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_RESTORE_SIGMASK	3	/* restore signal mask in do_signal() */
+#define TIF_SINGLESTEP		4	/* singlestepping active */
+#define TIF_SYSCALL_AUDIT	5
+#define TIF_USEDFPU		16	/* FPU was used by this task this quantum (SMP) */
+#define TIF_POLLING_NRFLAG	17	/* true if poll_idle() is polling TIF_NEED_RESCHED */
+#define TIF_MEMDIE		18
+#define TIF_FREEZE		19
+
+#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
+#define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
+#define _TIF_SINGLESTEP		(1<<TIF_SINGLESTEP)
+#define _TIF_SYSCALL_AUDIT		(1<<TIF_SYSCALL_AUDIT)
+#define _TIF_USEDFPU		(1<<TIF_USEDFPU)
+#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
+#define _TIF_FREEZE		(1<<TIF_FREEZE)
+
+#define _TIF_WORK_MASK		0x000000FE	/* work to do on interrupt/exception return */
+#define _TIF_ALLWORK_MASK	0x000000FF	/* work to do on any return to u-space */
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_SH_THREAD_INFO_H */