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-rw-r--r--include/asm-parisc/futex.h77
1 files changed, 0 insertions, 77 deletions
diff --git a/include/asm-parisc/futex.h b/include/asm-parisc/futex.h
deleted file mode 100644
index 0c705c3a55ef..000000000000
--- a/include/asm-parisc/futex.h
+++ /dev/null
@@ -1,77 +0,0 @@
1#ifndef _ASM_PARISC_FUTEX_H
2#define _ASM_PARISC_FUTEX_H
3
4#ifdef __KERNEL__
5
6#include <linux/futex.h>
7#include <linux/uaccess.h>
8#include <asm/errno.h>
9
10static inline int
11futex_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 pagefault_disable();
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 pagefault_enable();
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/* Non-atomic version */
53static inline int
54futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
55{
56 int err = 0;
57 int uval;
58
59 /* futex.c wants to do a cmpxchg_inatomic on kernel NULL, which is
60 * our gateway page, and causes no end of trouble...
61 */
62 if (segment_eq(KERNEL_DS, get_fs()) && !uaddr)
63 return -EFAULT;
64
65 if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
66 return -EFAULT;
67
68 err = get_user(uval, uaddr);
69 if (err) return -EFAULT;
70 if (uval == oldval)
71 err = put_user(newval, uaddr);
72 if (err) return -EFAULT;
73 return uval;
74}
75
76#endif /*__KERNEL__*/
77#endif /*_ASM_PARISC_FUTEX_H*/