score: update inconsistent declare after .c was changed

9 files changed, 472 insertions, 35 deletions

diff --git a/arch/score/include/asm/irq.h b/arch/score/include/asm/irq.h
index 6edd2a2..c883f3d 100644
--- a/arch/score/include/asm/irq.h
+++ b/arch/score/include/asm/irq.h
@@ -20,4 +20,6 @@
 
 #define IRQ_TIMER (7)		/* Timer IRQ number of SPCT6600 */
 
+extern void interrupt_exception_vector(void);
+
 #endif /* _ASM_SCORE_IRQ_H */
diff --git a/arch/score/include/asm/irq_regs.h b/arch/score/include/asm/irq_regs.h
index 905b7b0..b8e881c 100644
--- a/arch/score/include/asm/irq_regs.h
+++ b/arch/score/include/asm/irq_regs.h
@@ -1,6 +1,11 @@
 #ifndef _ASM_SCORE_IRQ_REGS_H
 #define _ASM_SCORE_IRQ_REGS_H
 
-#include <asm-generic/irq_regs.h>
+#include <linux/thread_info.h>
+
+static inline struct pt_regs *get_irq_regs(void)
+{
+	return current_thread_info()->regs;
+}
 
 #endif /* _ASM_SCORE_IRQ_REGS_H */
diff --git a/arch/score/include/asm/linkage.h b/arch/score/include/asm/linkage.h
index 2580fbb..2323a8e 100644
--- a/arch/score/include/asm/linkage.h
+++ b/arch/score/include/asm/linkage.h
@@ -1,4 +1,7 @@
 #ifndef _ASM_SCORE_LINKAGE_H
 #define _ASM_SCORE_LINKAGE_H
 
+#define __ALIGN .align 2
+#define __ALIGN_STR ".align 2"
+
 #endif /* _ASM_SCORE_LINKAGE_H */
diff --git a/arch/score/include/asm/page.h b/arch/score/include/asm/page.h
index 67e9820..ee58210 100644
--- a/arch/score/include/asm/page.h
+++ b/arch/score/include/asm/page.h
@@ -57,8 +57,8 @@ extern unsigned long max_low_pfn;
 extern unsigned long min_low_pfn;
 extern unsigned long max_pfn;
 
-#define __pa(vaddr)		((unsigned long) (vaddr))
-#define __va(paddr)		((void *) (paddr))
+#define __pa(x)		((unsigned long)(x) - PAGE_OFFSET)
+#define __va(x)		((void *)((unsigned long) (x) + PAGE_OFFSET))
 
 #define phys_to_pfn(phys)	(PFN_DOWN(phys))
 #define pfn_to_phys(pfn)	(PFN_PHYS(pfn))
diff --git a/arch/score/include/asm/pgalloc.h b/arch/score/include/asm/pgalloc.h
index 28dacc1..059a61b 100644
--- a/arch/score/include/asm/pgalloc.h
+++ b/arch/score/include/asm/pgalloc.h
@@ -72,7 +72,7 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
 	__free_pages(pte, PTE_ORDER);
 }
 
-#define __pte_free_tlb(tlb, pte)			\
+#define __pte_free_tlb(tlb, pte, buf)			\
 do {							\
 	pgtable_page_dtor(pte);				\
 	tlb_remove_page((tlb), pte);			\
diff --git a/arch/score/include/asm/pgtable.h b/arch/score/include/asm/pgtable.h
index 5e913e5..674934b 100644
--- a/arch/score/include/asm/pgtable.h
+++ b/arch/score/include/asm/pgtable.h
@@ -106,7 +106,8 @@ static inline void pmd_clear(pmd_t *pmdp)
 	((swp_entry_t) { pte_val(pte)})
 #define __swp_entry_to_pte(x)	((pte_t) {(x).val})
 
-#define pmd_page(pmd) virt_to_page(__va(pmd_val(pmd)))
+#define pmd_phys(pmd)		__pa((void *)pmd_val(pmd))
+#define pmd_page(pmd)		(pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
 #define mk_pte(page, prot)	pfn_pte(page_to_pfn(page), prot)
 static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 
@@ -129,14 +130,11 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 #define pgd_clear(pgdp)		do { } while (0)
 
 #define kern_addr_valid(addr)	(1)
-#define	pmd_offset(a, b)	((void *) 0)
 #define pmd_page_vaddr(pmd)	pmd_val(pmd)
 
 #define pte_none(pte)		(!(pte_val(pte) & ~_PAGE_GLOBAL))
 #define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
 
-#define pud_offset(pgd, address) ((pud_t *) pgd)
-
 #define PAGE_NONE	__pgprot(_PAGE_PRESENT | _PAGE_CACHE)
 #define PAGE_SHARED	__pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
 				_PAGE_CACHE)
@@ -165,15 +163,27 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 #define __S110	PAGE_SHARED
 #define __S111	PAGE_SHARED
 
-#define pgprot_noncached(x)	(x)
+#define pgprot_noncached pgprot_noncached
+
+static inline pgprot_t pgprot_noncached(pgprot_t _prot)
+{
+	unsigned long prot = pgprot_val(_prot);
+
+	prot = (prot & ~_CACHE_MASK);
+
+	return __pgprot(prot);
+}
 
-#define __swp_type(x)		(0)
-#define __swp_offset(x)		(0)
-#define __swp_entry(typ, off)	((swp_entry_t) { ((typ) | ((off) << 7)) })
+#define __swp_type(x)		((x).val & 0x1f)
+#define __swp_offset(x) 	((x).val >> 11)
+#define __swp_entry(type, offset) ((swp_entry_t){(type) | ((offset) << 11)})
 
-#define ZERO_PAGE(vaddr)	({ BUG(); NULL; })
+extern unsigned long empty_zero_page;
+extern unsigned long zero_page_mask;
 
-#define swapper_pg_dir ((pgd_t *) NULL)
+#define ZERO_PAGE(vaddr) \
+	(virt_to_page((void *)(empty_zero_page + \
+	 (((unsigned long)(vaddr)) & zero_page_mask))))
 
 #define pgtable_cache_init()	do {} while (0)
 
@@ -248,6 +258,7 @@ static inline pte_t pte_mkyoung(pte_t pte)
 #define pte_present(pte)	(pte_val(pte) & _PAGE_PRESENT)
 
 extern unsigned long pgd_current;
+extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
 extern void paging_init(void);
 
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
diff --git a/arch/score/include/asm/ptrace.h b/arch/score/include/asm/ptrace.h
index 66b14c8..d40e691 100644
--- a/arch/score/include/asm/ptrace.h
+++ b/arch/score/include/asm/ptrace.h
@@ -51,9 +51,11 @@
  * system call/exception. As usual the registers k0/k1 aren't being saved.
  */
 struct pt_regs {
-	unsigned long pad0[6];
+	unsigned long pad0[6];	/* stack arguments */
 	unsigned long orig_r4;
 	unsigned long orig_r7;
+	long is_syscall;
+
 	unsigned long regs[32];
 
 	unsigned long cel;
@@ -68,12 +70,12 @@ struct pt_regs {
 	unsigned long cp0_psr;
 	unsigned long cp0_ecr;
 	unsigned long cp0_condition;
-
-	long is_syscall;
 };
 
 #ifdef __KERNEL__
 
+struct task_struct;
+
 /*
  * Does the process account for user or for system time?
  */
diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h
index 6f09e2b..ab66ddd 100644
--- a/arch/score/include/asm/uaccess.h
+++ b/arch/score/include/asm/uaccess.h
@@ -1,27 +1,424 @@
-#ifndef _ASM_SCORE_UACCESS_H
-#define _ASM_SCORE_UACCESS_H
+#ifndef __SCORE_UACCESS_H
+#define __SCORE_UACCESS_H
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/thread_info.h>
+
+#define VERIFY_READ		0
+#define VERIFY_WRITE		1
+
+#define get_ds()		(KERNEL_DS)
+#define get_fs()		(current_thread_info()->addr_limit)
+#define segment_eq(a, b)	((a).seg == (b).seg)
+
 /*
- * Copyright (C) 2006 Atmark Techno, Inc.
+ * Is a address valid? This does a straighforward calculation rather
+ * than tests.
+ *
+ * Address valid if:
+ *  - "addr" doesn't have any high-bits set
+ *  - AND "size" doesn't have any high-bits set
+ *  - AND "addr+size" doesn't have any high-bits set
+ *  - OR we are in kernel mode.
  *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
+ * __ua_size() is a trick to avoid runtime checking of positive constant
+ * sizes; for those we already know at compile time that the size is ok.
  */
-struct pt_regs;
-extern int fixup_exception(struct pt_regs *regs);
+#define __ua_size(size)							\
+	((__builtin_constant_p(size) && (signed long) (size) > 0) ? 0 : (size))
+
+/*
+ * access_ok: - Checks if a user space pointer is valid
+ * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE.  Note that
+ *        %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
+ *        to write to a block, it is always safe to read from it.
+ * @addr: User space pointer to start of block to check
+ * @size: Size of block to check
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * Checks if a pointer to a block of memory in user space is valid.
+ *
+ * Returns true (nonzero) if the memory block may be valid, false (zero)
+ * if it is definitely invalid.
+ *
+ * Note that, depending on architecture, this function probably just
+ * checks that the pointer is in the user space range - after calling
+ * this function, memory access functions may still return -EFAULT.
+ */
+
+#define __access_ok(addr, size)					\
+	(((long)((get_fs().seg) &				\
+		 ((addr) | ((addr) + (size)) |			\
+		  __ua_size(size)))) == 0)
+
+#define access_ok(type, addr, size)				\
+	likely(__access_ok((unsigned long)(addr), (size)))
+
+/*
+ * put_user: - Write a simple value into user space.
+ * @x:   Value to copy to user space.
+ * @ptr: Destination address, in user space.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * This macro copies a single simple value from kernel space to user
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and @x must be assignable
+ * to the result of dereferencing @ptr.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ */
+#define put_user(x, ptr) __put_user_check((x), (ptr), sizeof(*(ptr)))
+
+/*
+ * get_user: - Get a simple variable from user space.
+ * @x:   Variable to store result.
+ * @ptr: Source address, in user space.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * This macro copies a single simple variable from user space to kernel
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and the result of
+ * dereferencing @ptr must be assignable to @x without a cast.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ * On error, the variable @x is set to zero.
+ */
+#define get_user(x, ptr) __get_user_check((x), (ptr), sizeof(*(ptr)))
+
+/*
+ * __put_user: - Write a simple value into user space, with less checking.
+ * @x:   Value to copy to user space.
+ * @ptr: Destination address, in user space.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * This macro copies a single simple value from kernel space to user
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and @x must be assignable
+ * to the result of dereferencing @ptr.
+ *
+ * Caller must check the pointer with access_ok() before calling this
+ * function.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ */
+#define __put_user(x, ptr) __put_user_nocheck((x), (ptr), sizeof(*(ptr)))
+
+/*
+ * __get_user: - Get a simple variable from user space, with less checking.
+ * @x:   Variable to store result.
+ * @ptr: Source address, in user space.
+ *
+ * Context: User context only.  This function may sleep.
+ *
+ * This macro copies a single simple variable from user space to kernel
+ * space.  It supports simple types like char and int, but not larger
+ * data types like structures or arrays.
+ *
+ * @ptr must have pointer-to-simple-variable type, and the result of
+ * dereferencing @ptr must be assignable to @x without a cast.
+ *
+ * Caller must check the pointer with access_ok() before calling this
+ * function.
+ *
+ * Returns zero on success, or -EFAULT on error.
+ * On error, the variable @x is set to zero.
+ */
+#define __get_user(x, ptr) __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
+
+struct __large_struct { unsigned long buf[100]; };
+#define __m(x) (*(struct __large_struct __user *)(x))
+
+/*
+ * Yuck.  We need two variants, one for 64bit operation and one
+ * for 32 bit mode and old iron.
+ */
+extern void __get_user_unknown(void);
+
+#define __get_user_common(val, size, ptr)				\
+do {									\
+	switch (size) {							\
+	case 1:								\
+		__get_user_asm(val, "lb", ptr);				\
+		break;							\
+	case 2:								\
+		__get_user_asm(val, "lh", ptr);				\
+		 break;							\
+	case 4:								\
+		__get_user_asm(val, "lw", ptr);				\
+		 break;							\
+	case 8: 							\
+		if ((copy_from_user((void *)&val, ptr, 8)) == 0)	\
+			__gu_err = 0;					\
+		else							\
+			__gu_err = -EFAULT;				\
+		break;							\
+	default:							\
+		__get_user_unknown();					\
+		break;							\
+	}								\
+} while (0)
+
+#define __get_user_nocheck(x, ptr, size)				\
+({									\
+	long __gu_err = 0;						\
+	__get_user_common((x), size, ptr);				\
+	__gu_err;							\
+})
+
+#define __get_user_check(x, ptr, size)					\
+({									\
+	long __gu_err = -EFAULT;					\
+	const __typeof__(*(ptr)) __user *__gu_ptr = (ptr);		\
+									\
+	if (likely(access_ok(VERIFY_READ, __gu_ptr, size)))		\
+		__get_user_common((x), size, __gu_ptr);			\
+									\
+	__gu_err;							\
+})
+
+#define __get_user_asm(val, insn, addr)					\
+{									\
+	long __gu_tmp;							\
+									\
+	__asm__ __volatile__(						\
+		"1:" insn " %1, %3\n"					\
+		"2:\n"							\
+		".section .fixup,\"ax\"\n"				\
+		"3:li	%0, %4\n"					\
+		"j	2b\n"						\
+		".previous\n"						\
+		".section __ex_table,\"a\"\n"				\
+		".word	1b, 3b\n"					\
+		".previous\n"						\
+		: "=r" (__gu_err), "=r" (__gu_tmp)			\
+		: "0" (0), "o" (__m(addr)), "i" (-EFAULT));		\
+									\
+		(val) = (__typeof__(*(addr))) __gu_tmp;			\
+}
+
+/*
+ * Yuck.  We need two variants, one for 64bit operation and one
+ * for 32 bit mode and old iron.
+ */
+#define __put_user_nocheck(val, ptr, size)				\
+({									\
+	__typeof__(*(ptr)) __pu_val;					\
+	long __pu_err = 0;						\
+									\
+	__pu_val = (val);						\
+	switch (size) {							\
+	case 1:								\
+		__put_user_asm("sb", ptr);				\
+		break;							\
+	case 2:								\
+		__put_user_asm("sh", ptr);				\
+		break;							\
+	case 4:								\
+		__put_user_asm("sw", ptr);				\
+		break;							\
+	case 8: 							\
+		if ((__copy_to_user((void *)ptr, &__pu_val, 8)) == 0)	\
+			__pu_err = 0;					\
+		else							\
+			__pu_err = -EFAULT;				\
+		break;							\
+	default:							\
+		 __put_user_unknown();					\
+		 break;							\
+	}								\
+	__pu_err;							\
+})
+
+
+#define __put_user_check(val, ptr, size)				\
+({									\
+	__typeof__(*(ptr)) __user *__pu_addr = (ptr);			\
+	__typeof__(*(ptr)) __pu_val = (val);				\
+	long __pu_err = -EFAULT;					\
+									\
+	if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) {		\
+		switch (size) {						\
+		case 1:							\
+			__put_user_asm("sb", __pu_addr);		\
+			break;						\
+		case 2:							\
+			__put_user_asm("sh", __pu_addr);		\
+			break;						\
+		case 4:							\
+			__put_user_asm("sw", __pu_addr);		\
+			break;						\
+		case 8: 						\
+			if ((__copy_to_user((void *)__pu_addr, &__pu_val, 8)) == 0)\
+				__pu_err = 0;				\
+			else						\
+				__pu_err = -EFAULT;			\
+			break;						\
+		default:						\
+			__put_user_unknown();				\
+			break;						\
+		}							\
+	}								\
+	__pu_err;							\
+})
+
+#define __put_user_asm(insn, ptr)					\
+	__asm__ __volatile__(						\
+		"1:" insn " %2, %3\n"					\
+		"2:\n"							\
+		".section .fixup,\"ax\"\n"				\
+		"3:li %0, %4\n"						\
+		"j 2b\n"						\
+		".previous\n"						\
+		".section __ex_table,\"a\"\n"				\
+		".word 1b, 3b\n"					\
+		".previous\n"						\
+		: "=r" (__pu_err)					\
+		: "0" (0), "r" (__pu_val), "o" (__m(ptr)),		\
+		  "i" (-EFAULT));
+
+extern void __put_user_unknown(void);
+extern int __copy_tofrom_user(void *to, const void *from, unsigned long len);
+
+static inline unsigned long
+copy_from_user(void *to, const void *from, unsigned long len)
+{
+	unsigned long over;
+
+	if (access_ok(VERIFY_READ, from, len))
+		return __copy_tofrom_user(to, from, len);
+
+	if ((unsigned long)from < TASK_SIZE) {
+		over = (unsigned long)from + len - TASK_SIZE;
+		return __copy_tofrom_user(to, from, len - over) + over;
+	}
+	return len;
+}
+
+static inline unsigned long
+copy_to_user(void *to, const void *from, unsigned long len)
+{
+	unsigned long over;
+
+	if (access_ok(VERIFY_WRITE, to, len))
+		return __copy_tofrom_user(to, from, len);
+
+	if ((unsigned long)to < TASK_SIZE) {
+		over = (unsigned long)to + len - TASK_SIZE;
+		return __copy_tofrom_user(to, from, len - over) + over;
+	}
+	return len;
+}
 
-#ifndef __ASSEMBLY__
+#define __copy_from_user(to, from, len)	\
+		__copy_tofrom_user((to), (from), (len))
 
-#define __range_ok(addr, size)					\
-	((((unsigned long __force)(addr) >= 0x80000000)			\
-	|| ((unsigned long)(size) > 0x80000000)			\
-	|| (((unsigned long __force)(addr) + (unsigned long)(size)) > 0x80000000)))
+#define __copy_to_user(to, from, len)		\
+		__copy_tofrom_user((to), (from), (len))
 
-#define __access_ok(addr, size) \
-	(__range_ok((addr), (size)) == 0)
+static inline unsigned long
+__copy_to_user_inatomic(void *to, const void *from, unsigned long len)
+{
+	return __copy_to_user(to, from, len);
+}
 
-#include <asm-generic/uaccess.h>
+static inline unsigned long
+__copy_from_user_inatomic(void *to, const void *from, unsigned long len)
+{
+	return __copy_from_user(to, from, len);
+}
+
+#define __copy_in_user(to, from, len)	__copy_from_user(to, from, len)
+
+static inline unsigned long
+copy_in_user(void *to, const void *from, unsigned long len)
+{
+	if (access_ok(VERIFY_READ, from, len) &&
+		      access_ok(VERFITY_WRITE, to, len))
+		return copy_from_user(to, from, len);
+}
+
+/*
+ * __clear_user: - Zero a block of memory in user space, with less checking.
+ * @to:   Destination address, in user space.
+ * @n:    Number of bytes to zero.
+ *
+ * Zero a block of memory in user space.  Caller must check
+ * the specified block with access_ok() before calling this function.
+ *
+ * Returns number of bytes that could not be cleared.
+ * On success, this will be zero.
+ */
+extern unsigned long __clear_user(void __user *src, unsigned long size);
+
+static inline unsigned long clear_user(char *src, unsigned long size)
+{
+	if (access_ok(VERIFY_WRITE, src, size))
+		return __clear_user(src, size);
+
+	return -EFAULT;
+}
+/*
+ * __strncpy_from_user: - Copy a NUL terminated string from userspace, with less checking.
+ * @dst:   Destination address, in kernel space.  This buffer must be at
+ *         least @count bytes long.
+ * @src:   Source address, in user space.
+ * @count: Maximum number of bytes to copy, including the trailing NUL.
+ *
+ * Copies a NUL-terminated string from userspace to kernel space.
+ * Caller must check the specified block with access_ok() before calling
+ * this function.
+ *
+ * On success, returns the length of the string (not including the trailing
+ * NUL).
+ *
+ * If access to userspace fails, returns -EFAULT (some data may have been
+ * copied).
+ *
+ * If @count is smaller than the length of the string, copies @count bytes
+ * and returns @count.
+ */
+extern int __strncpy_from_user(char *dst, const char *src, long len);
+
+static inline int strncpy_from_user(char *dst, const char *src, long len)
+{
+	if (access_ok(VERIFY_READ, src, 1))
+		return __strncpy_from_user(dst, src, len);
+
+	return -EFAULT;
+}
+
+extern int __strlen_user(const char *src);
+static inline long strlen_user(const char __user *src)
+{
+	return __strlen_user(src);
+}
+
+extern int __strnlen_user(const char *str, long len);
+static inline long strnlen_user(const char __user *str, long len)
+{
+	if (!access_ok(VERIFY_READ, str, 0))
+		return 0;
+	else		
+		return __strnlen_user(str, len);
+}
+
+struct exception_table_entry {
+	unsigned long insn;
+	unsigned long fixup;
+};
+
+extern int fixup_exception(struct pt_regs *regs);
 
-#endif /* __ASSEMBLY__ */
+#endif /* __SCORE_UACCESS_H */
 
-#endif /* _ASM_SCORE_UACCESS_H */
diff --git a/arch/score/include/asm/user.h b/arch/score/include/asm/user.h
index 3cf7572..7bfb8e2 100644
--- a/arch/score/include/asm/user.h
+++ b/arch/score/include/asm/user.h
@@ -1,4 +1,21 @@
 #ifndef _ASM_SCORE_USER_H
 #define _ASM_SCORE_USER_H
 
+struct user_regs_struct {
+	unsigned long regs[32];
+
+	unsigned long cel;
+	unsigned long ceh;
+
+	unsigned long sr0;	/* cnt */
+	unsigned long sr1;	/* lcr */
+	unsigned long sr2;	/* scr */
+
+	unsigned long cp0_epc;
+	unsigned long cp0_ema;
+	unsigned long cp0_psr;
+	unsigned long cp0_ecr;
+	unsigned long cp0_condition;
+};
+
 #endif /* _ASM_SCORE_USER_H */