* 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) \
__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) \
({ \
__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. */