diff options
Diffstat (limited to 'arch/x86/lib/getuser_32.S')
-rw-r--r-- | arch/x86/lib/getuser_32.S | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/arch/x86/lib/getuser_32.S b/arch/x86/lib/getuser_32.S deleted file mode 100644 index 2bb0a183e066..000000000000 --- a/arch/x86/lib/getuser_32.S +++ /dev/null | |||
@@ -1,79 +0,0 @@ | |||
1 | /* | ||
2 | * __get_user functions. | ||
3 | * | ||
4 | * (C) Copyright 1998 Linus Torvalds | ||
5 | * | ||
6 | * These functions have a non-standard call interface | ||
7 | * to make them more efficient, especially as they | ||
8 | * return an error value in addition to the "real" | ||
9 | * return value. | ||
10 | */ | ||
11 | #include <linux/linkage.h> | ||
12 | #include <asm/dwarf2.h> | ||
13 | #include <asm/thread_info.h> | ||
14 | #include <asm/asm.h> | ||
15 | |||
16 | |||
17 | /* | ||
18 | * __get_user_X | ||
19 | * | ||
20 | * Inputs: %eax contains the address | ||
21 | * | ||
22 | * Outputs: %eax is error code (0 or -EFAULT) | ||
23 | * %edx contains zero-extended value | ||
24 | * | ||
25 | * These functions should not modify any other registers, | ||
26 | * as they get called from within inline assembly. | ||
27 | */ | ||
28 | |||
29 | .text | ||
30 | ENTRY(__get_user_1) | ||
31 | CFI_STARTPROC | ||
32 | GET_THREAD_INFO(%_ASM_DX) | ||
33 | cmp TI_addr_limit(%_ASM_DX),%_ASM_AX | ||
34 | jae bad_get_user | ||
35 | 1: movzb (%_ASM_AX),%edx | ||
36 | xor %eax,%eax | ||
37 | ret | ||
38 | CFI_ENDPROC | ||
39 | ENDPROC(__get_user_1) | ||
40 | |||
41 | ENTRY(__get_user_2) | ||
42 | CFI_STARTPROC | ||
43 | add $1,%_ASM_AX | ||
44 | jc bad_get_user | ||
45 | GET_THREAD_INFO(%_ASM_DX) | ||
46 | cmp TI_addr_limit(%_ASM_DX),%_ASM_AX | ||
47 | jae bad_get_user | ||
48 | 2: movzwl -1(%_ASM_AX),%edx | ||
49 | xor %eax,%eax | ||
50 | ret | ||
51 | CFI_ENDPROC | ||
52 | ENDPROC(__get_user_2) | ||
53 | |||
54 | ENTRY(__get_user_4) | ||
55 | CFI_STARTPROC | ||
56 | add $3,%_ASM_AX | ||
57 | jc bad_get_user | ||
58 | GET_THREAD_INFO(%_ASM_DX) | ||
59 | cmp TI_addr_limit(%_ASM_DX),%_ASM_AX | ||
60 | jae bad_get_user | ||
61 | 3: mov -3(%_ASM_AX),%edx | ||
62 | xor %eax,%eax | ||
63 | ret | ||
64 | CFI_ENDPROC | ||
65 | ENDPROC(__get_user_4) | ||
66 | |||
67 | bad_get_user: | ||
68 | CFI_STARTPROC | ||
69 | xor %edx,%edx | ||
70 | mov $-14,%_ASM_AX | ||
71 | ret | ||
72 | CFI_ENDPROC | ||
73 | END(bad_get_user) | ||
74 | |||
75 | .section __ex_table,"a" | ||
76 | _ASM_PTR 1b,bad_get_user | ||
77 | _ASM_PTR 2b,bad_get_user | ||
78 | _ASM_PTR 3b,bad_get_user | ||
79 | .previous | ||