diff options
Diffstat (limited to 'arch/tile/lib/usercopy_32.S')
-rw-r--r-- | arch/tile/lib/usercopy_32.S | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/arch/tile/lib/usercopy_32.S b/arch/tile/lib/usercopy_32.S index 979f76d83746..b62d002af009 100644 --- a/arch/tile/lib/usercopy_32.S +++ b/arch/tile/lib/usercopy_32.S | |||
@@ -19,82 +19,6 @@ | |||
19 | 19 | ||
20 | /* Access user memory, but use MMU to avoid propagating kernel exceptions. */ | 20 | /* Access user memory, but use MMU to avoid propagating kernel exceptions. */ |
21 | 21 | ||
22 | .pushsection .fixup,"ax" | ||
23 | |||
24 | get_user_fault: | ||
25 | { move r0, zero; move r1, zero } | ||
26 | { movei r2, -EFAULT; jrp lr } | ||
27 | ENDPROC(get_user_fault) | ||
28 | |||
29 | put_user_fault: | ||
30 | { movei r0, -EFAULT; jrp lr } | ||
31 | ENDPROC(put_user_fault) | ||
32 | |||
33 | .popsection | ||
34 | |||
35 | /* | ||
36 | * __get_user_N functions take a pointer in r0, and return 0 in r2 | ||
37 | * on success, with the value in r0; or else -EFAULT in r2. | ||
38 | */ | ||
39 | #define __get_user_N(bytes, LOAD) \ | ||
40 | STD_ENTRY(__get_user_##bytes); \ | ||
41 | 1: { LOAD r0, r0; move r1, zero; move r2, zero }; \ | ||
42 | jrp lr; \ | ||
43 | STD_ENDPROC(__get_user_##bytes); \ | ||
44 | .pushsection __ex_table,"a"; \ | ||
45 | .word 1b, get_user_fault; \ | ||
46 | .popsection | ||
47 | |||
48 | __get_user_N(1, lb_u) | ||
49 | __get_user_N(2, lh_u) | ||
50 | __get_user_N(4, lw) | ||
51 | |||
52 | /* | ||
53 | * __get_user_8 takes a pointer in r0, and returns 0 in r2 | ||
54 | * on success, with the value in r0/r1; or else -EFAULT in r2. | ||
55 | */ | ||
56 | STD_ENTRY(__get_user_8); | ||
57 | 1: { lw r0, r0; addi r1, r0, 4 }; | ||
58 | 2: { lw r1, r1; move r2, zero }; | ||
59 | jrp lr; | ||
60 | STD_ENDPROC(__get_user_8); | ||
61 | .pushsection __ex_table,"a"; | ||
62 | .word 1b, get_user_fault; | ||
63 | .word 2b, get_user_fault; | ||
64 | .popsection | ||
65 | |||
66 | /* | ||
67 | * __put_user_N functions take a value in r0 and a pointer in r1, | ||
68 | * and return 0 in r0 on success or -EFAULT on failure. | ||
69 | */ | ||
70 | #define __put_user_N(bytes, STORE) \ | ||
71 | STD_ENTRY(__put_user_##bytes); \ | ||
72 | 1: { STORE r1, r0; move r0, zero }; \ | ||
73 | jrp lr; \ | ||
74 | STD_ENDPROC(__put_user_##bytes); \ | ||
75 | .pushsection __ex_table,"a"; \ | ||
76 | .word 1b, put_user_fault; \ | ||
77 | .popsection | ||
78 | |||
79 | __put_user_N(1, sb) | ||
80 | __put_user_N(2, sh) | ||
81 | __put_user_N(4, sw) | ||
82 | |||
83 | /* | ||
84 | * __put_user_8 takes a value in r0/r1 and a pointer in r2, | ||
85 | * and returns 0 in r0 on success or -EFAULT on failure. | ||
86 | */ | ||
87 | STD_ENTRY(__put_user_8) | ||
88 | 1: { sw r2, r0; addi r2, r2, 4 } | ||
89 | 2: { sw r2, r1; move r0, zero } | ||
90 | jrp lr | ||
91 | STD_ENDPROC(__put_user_8) | ||
92 | .pushsection __ex_table,"a" | ||
93 | .word 1b, put_user_fault | ||
94 | .word 2b, put_user_fault | ||
95 | .popsection | ||
96 | |||
97 | |||
98 | /* | 22 | /* |
99 | * strnlen_user_asm takes the pointer in r0, and the length bound in r1. | 23 | * strnlen_user_asm takes the pointer in r0, and the length bound in r1. |
100 | * It returns the length, including the terminating NUL, or zero on exception. | 24 | * It returns the length, including the terminating NUL, or zero on exception. |