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-rw-r--r--arch/x86/lib/putuser_64.S106
1 files changed, 0 insertions, 106 deletions
diff --git a/arch/x86/lib/putuser_64.S b/arch/x86/lib/putuser_64.S
deleted file mode 100644
index 4989f5a8fa9b..000000000000
--- a/arch/x86/lib/putuser_64.S
+++ /dev/null
@@ -1,106 +0,0 @@
1/*
2 * __put_user functions.
3 *
4 * (C) Copyright 1998 Linus Torvalds
5 * (C) Copyright 2005 Andi Kleen
6 *
7 * These functions have a non-standard call interface
8 * to make them more efficient, especially as they
9 * return an error value in addition to the "real"
10 * return value.
11 */
12
13/*
14 * __put_user_X
15 *
16 * Inputs: %rcx contains the address
17 * %rdx contains new value
18 *
19 * Outputs: %rax is error code (0 or -EFAULT)
20 *
21 * %r8 is destroyed.
22 *
23 * These functions should not modify any other registers,
24 * as they get called from within inline assembly.
25 */
26
27#include <linux/linkage.h>
28#include <asm/dwarf2.h>
29#include <asm/page.h>
30#include <asm/errno.h>
31#include <asm/asm-offsets.h>
32#include <asm/thread_info.h>
33
34 .text
35ENTRY(__put_user_1)
36 CFI_STARTPROC
37 GET_THREAD_INFO(%r8)
38 cmpq threadinfo_addr_limit(%r8),%rcx
39 jae bad_put_user
401: movb %dl,(%rcx)
41 xorl %eax,%eax
42 ret
43 CFI_ENDPROC
44ENDPROC(__put_user_1)
45
46ENTRY(__put_user_2)
47 CFI_STARTPROC
48 GET_THREAD_INFO(%r8)
49 addq $1,%rcx
50 jc 20f
51 cmpq threadinfo_addr_limit(%r8),%rcx
52 jae 20f
53 decq %rcx
542: movw %dx,(%rcx)
55 xorl %eax,%eax
56 ret
5720: decq %rcx
58 jmp bad_put_user
59 CFI_ENDPROC
60ENDPROC(__put_user_2)
61
62ENTRY(__put_user_4)
63 CFI_STARTPROC
64 GET_THREAD_INFO(%r8)
65 addq $3,%rcx
66 jc 30f
67 cmpq threadinfo_addr_limit(%r8),%rcx
68 jae 30f
69 subq $3,%rcx
703: movl %edx,(%rcx)
71 xorl %eax,%eax
72 ret
7330: subq $3,%rcx
74 jmp bad_put_user
75 CFI_ENDPROC
76ENDPROC(__put_user_4)
77
78ENTRY(__put_user_8)
79 CFI_STARTPROC
80 GET_THREAD_INFO(%r8)
81 addq $7,%rcx
82 jc 40f
83 cmpq threadinfo_addr_limit(%r8),%rcx
84 jae 40f
85 subq $7,%rcx
864: movq %rdx,(%rcx)
87 xorl %eax,%eax
88 ret
8940: subq $7,%rcx
90 jmp bad_put_user
91 CFI_ENDPROC
92ENDPROC(__put_user_8)
93
94bad_put_user:
95 CFI_STARTPROC
96 movq $(-EFAULT),%rax
97 ret
98 CFI_ENDPROC
99END(bad_put_user)
100
101.section __ex_table,"a"
102 .quad 1b,bad_put_user
103 .quad 2b,bad_put_user
104 .quad 3b,bad_put_user
105 .quad 4b,bad_put_user
106.previous