Gitweb: http://git.kernel.org/linus/8b651aa4a7c047b848f3a7bdf0aba9449e6dc3d3
Commit: 8b651aa4a7c047b848f3a7bdf0aba9449e6dc3d3
Parent: c77a9c4bb7b6e26400853c92d74ccc697c5e2f7e
Author: Michal Simek <monstr@monstr.eu>
AuthorDate: Mon Mar 22 15:25:12 2010 +0100
Committer: Michal Simek <monstr@monstr.eu>
CommitDate: Thu Apr 1 08:38:20 2010 +0200
microblaze: uaccess: fix put_user and get_user macros
Use FIXUP macros and resort them.
Signed-off-by: Michal Simek <monstr@monstr.eu>
---
arch/microblaze/include/asm/uaccess.h | 100 ++++++++++++++++-----------------
1 files changed, 49 insertions(+), 51 deletions(-)
diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h
index 531172e..1e8fa4b 100644
--- a/arch/microblaze/include/asm/uaccess.h
+++ b/arch/microblaze/include/asm/uaccess.h
@@ -197,16 +197,22 @@ extern long strnlen_user(const char *src, long count);
* already performed before the finction (macro) is called.
*/
-#define get_user(x, ptr) \
-({ \
- access_ok(VERIFY_READ, (ptr), sizeof(*(ptr))) \
- ? __get_user((x), (ptr)) : -EFAULT; \
-})
-
-#define put_user(x, ptr) \
-({ \
- access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr))) \
- ? __put_user((x), (ptr)) : -EFAULT; \
+#define __get_user_asm(insn, __gu_ptr, __gu_val, __gu_err) \
+({ \
+ __asm__ __volatile__ ( \
+ "1:" insn " %1, %2, r0;" \
+ " addk %0, r0, r0;" \
+ "2: " \
+ __FIXUP_SECTION \
+ "3: brid 2b; " \
+ " addik %0, r0, %3;" \
+ ".previous;" \
+ __EX_TABLE_SECTION \
+ ".word 1b,3b;" \
+ ".previous;" \
+ : "=&r"(__gu_err), "=r"(__gu_val) \
+ : "r"(__gu_ptr), "i"(-EFAULT) \
+ ); \
})
#define __get_user(x, ptr) \
@@ -231,24 +237,49 @@ extern long strnlen_user(const char *src, long count);
__gu_err; \
})
-#define __get_user_asm(insn, __gu_ptr, __gu_val, __gu_err) \
+#define get_user(x, ptr) \
+({ \
+ access_ok(VERIFY_READ, (ptr), sizeof(*(ptr))) \
+ ? __get_user((x), (ptr)) : -EFAULT; \
+})
+
+#define __put_user_asm(insn, __gu_ptr, __gu_val, __gu_err) \
({ \
__asm__ __volatile__ ( \
"1:" insn " %1, %2, r0;" \
" addk %0, r0, r0;" \
"2: " \
__FIXUP_SECTION \
- "3: brid 2b; " \
+ "3: brid 2b;" \
" addik %0, r0, %3;" \
".previous;" \
__EX_TABLE_SECTION \
".word 1b,3b;" \
".previous;" \
- : "=&r"(__gu_err), "=r"(__gu_val) \
- : "r"(__gu_ptr), "i"(-EFAULT) \
+ : "=&r"(__gu_err) \
+ : "r"(__gu_val), "r"(__gu_ptr), "i"(-EFAULT) \
); \
})
+#define __put_user_asm_8(__gu_ptr, __gu_val, __gu_err) \
+({ \
+ __asm__ __volatile__ (" lwi %0, %1, 0;" \
+ "1: swi %0, %2, 0;" \
+ " lwi %0, %1, 4;" \
+ "2: swi %0, %2, 4;" \
+ " addk %0, r0, r0;" \
+ "3: " \
+ __FIXUP_SECTION \
+ "4: brid 3b;" \
+ " addik %0, r0, %3;" \
+ ".previous;" \
+ __EX_TABLE_SECTION \
+ ".word 1b,4b,2b,4b;" \
+ ".previous;" \
+ : "=&r"(__gu_err) \
+ : "r"(&__gu_val), "r"(__gu_ptr), "i"(-EFAULT) \
+ ); \
+})
#define __put_user(x, ptr) \
({ \
@@ -273,43 +304,10 @@ extern long strnlen_user(const char *src, long count);
__gu_err; \
})
-#define __put_user_asm_8(__gu_ptr, __gu_val, __gu_err) \
-({ \
-__asm__ __volatile__ (" lwi %0, %1, 0; \
- 1: swi %0, %2, 0; \
- lwi %0, %1, 4; \
- 2: swi %0, %2, 4; \
- addk %0,r0,r0; \
- 3: \
- .section .fixup,\"ax\"; \
- 4: brid 3b; \
- addik %0, r0, %3; \
- .previous; \
- .section __ex_table,\"a\"; \
- .word 1b,4b,2b,4b; \
- .previous;" \
- : "=&r"(__gu_err) \
- : "r"(&__gu_val), \
- "r"(__gu_ptr), "i"(-EFAULT) \
- ); \
-})
-
-#define __put_user_asm(insn, __gu_ptr, __gu_val, __gu_err) \
-({ \
- __asm__ __volatile__ ( \
- "1:" insn " %1, %2, r0; \
- addk %0, r0, r0; \
- 2: \
- .section .fixup,\"ax\"; \
- 3: brid 2b; \
- addik %0, r0, %3; \
- .previous; \
- .section __ex_table,\"a\"; \
- .word 1b,3b; \
- .previous;" \
- : "=r"(__gu_err) \
- : "r"(__gu_val), "r"(__gu_ptr), "i"(-EFAULT) \
- ); \
+#define put_user(x, ptr) \
+({ \
+ access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr))) \
+ ? __put_user((x), (ptr)) : -EFAULT; \
})
/* Return: number of not copied bytes, i.e. 0 if OK or non-zero if fail. */
--
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