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authorChen Liqin <liqin.chen@sunplusct.com>2009-08-30 12:30:16 +0800
committerChen Liqin <liqin.chen@sunplusct.com>2009-08-30 12:30:16 +0800
commitffa818b4b099f65b6cb74750bdb979061716e020 (patch)
tree2bb6917efd2590e02ffebd12356a990616414262 /arch/score/include/asm
parentd8aa899bb27ad7879ab9e621365e04ada2745a65 (diff)
score: update inconsistent declare after .c was changed
Diffstat (limited to 'arch/score/include/asm')
-rw-r--r--arch/score/include/asm/irq.h2
-rw-r--r--arch/score/include/asm/irq_regs.h7
-rw-r--r--arch/score/include/asm/linkage.h3
-rw-r--r--arch/score/include/asm/page.h4
-rw-r--r--arch/score/include/asm/pgalloc.h2
-rw-r--r--arch/score/include/asm/pgtable.h31
-rw-r--r--arch/score/include/asm/ptrace.h8
-rw-r--r--arch/score/include/asm/uaccess.h433
-rw-r--r--arch/score/include/asm/user.h17
9 files changed, 472 insertions, 35 deletions
diff --git a/arch/score/include/asm/irq.h b/arch/score/include/asm/irq.h
index 6edd2a2adef..c883f3df33f 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 905b7b078ba..b8e881c9a69 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 2580fbbfe94..2323a8ecf44 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 67e98206be6..ee5821042fc 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 28dacc1cbba..059a61b7071 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 5e913e57c67..674934b4017 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 66b14c8891c..d40e691f23e 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 6f09e2b7ddb..ab66ddde777 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 3cf75720fe0..7bfb8e2c805 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 */