diff options
Diffstat (limited to 'include/asm-sh64')
-rw-r--r-- | include/asm-sh64/futex.h | 49 |
1 files changed, 1 insertions, 48 deletions
diff --git a/include/asm-sh64/futex.h b/include/asm-sh64/futex.h index 9feff4ce1424..6a332a9f099c 100644 --- a/include/asm-sh64/futex.h +++ b/include/asm-sh64/futex.h | |||
@@ -1,53 +1,6 @@ | |||
1 | #ifndef _ASM_FUTEX_H | 1 | #ifndef _ASM_FUTEX_H |
2 | #define _ASM_FUTEX_H | 2 | #define _ASM_FUTEX_H |
3 | 3 | ||
4 | #ifdef __KERNEL__ | 4 | #include <asm-generic/futex.h> |
5 | 5 | ||
6 | #include <linux/futex.h> | ||
7 | #include <asm/errno.h> | ||
8 | #include <asm/uaccess.h> | ||
9 | |||
10 | static inline int | ||
11 | futex_atomic_op_inuser (int encoded_op, int __user *uaddr) | ||
12 | { | ||
13 | int op = (encoded_op >> 28) & 7; | ||
14 | int cmp = (encoded_op >> 24) & 15; | ||
15 | int oparg = (encoded_op << 8) >> 20; | ||
16 | int cmparg = (encoded_op << 20) >> 20; | ||
17 | int oldval = 0, ret; | ||
18 | if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) | ||
19 | oparg = 1 << oparg; | ||
20 | |||
21 | if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int))) | ||
22 | return -EFAULT; | ||
23 | |||
24 | inc_preempt_count(); | ||
25 | |||
26 | switch (op) { | ||
27 | case FUTEX_OP_SET: | ||
28 | case FUTEX_OP_ADD: | ||
29 | case FUTEX_OP_OR: | ||
30 | case FUTEX_OP_ANDN: | ||
31 | case FUTEX_OP_XOR: | ||
32 | default: | ||
33 | ret = -ENOSYS; | ||
34 | } | ||
35 | |||
36 | dec_preempt_count(); | ||
37 | |||
38 | if (!ret) { | ||
39 | switch (cmp) { | ||
40 | case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break; | ||
41 | case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break; | ||
42 | case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break; | ||
43 | case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break; | ||
44 | case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break; | ||
45 | case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break; | ||
46 | default: ret = -ENOSYS; | ||
47 | } | ||
48 | } | ||
49 | return ret; | ||
50 | } | ||
51 | |||
52 | #endif | ||
53 | #endif | 6 | #endif |