aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/uaccess.h28
1 files changed, 17 insertions, 11 deletions
diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index a87ab5290ab4..7328343e7204 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -463,17 +463,23 @@ struct __large_struct { unsigned long buf[100]; };
* we do not write to any memory gcc knows about, so there are no
* aliasing issues.
*/
-#define __put_user_asm(x, addr, err, itype, rtype, ltype, errret) \
- asm volatile("\n" \
- "1: mov"itype" %"rtype"1,%2\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3: mov %3,%0\n" \
- " jmp 2b\n" \
- ".previous\n" \
- _ASM_EXTABLE_UA(1b, 3b) \
- : "=r"(err) \
- : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err))
+#define __put_user_goto(x, addr, itype, rtype, ltype, label) \
+ asm_volatile_goto("\n" \
+ "1: mov"itype" %"rtype"0,%1\n" \
+ _ASM_EXTABLE_UA(1b, %l2) \
+ : : ltype(x), "m" (__m(addr)) \
+ : : label)
+
+#define __put_user_failed(x, addr, itype, rtype, ltype, errret) \
+ ({ __label__ __puflab; \
+ int __pufret = errret; \
+ __put_user_goto(x,addr,itype,rtype,ltype,__puflab); \
+ __pufret = 0; \
+ __puflab: __pufret; })
+
+#define __put_user_asm(x, addr, retval, itype, rtype, ltype, errret) do { \
+ retval = __put_user_failed(x, addr, itype, rtype, ltype, errret); \
+} while (0)
#define __put_user_asm_ex(x, addr, itype, rtype, ltype) \
asm volatile("1: mov"itype" %"rtype"0,%1\n" \