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Diffstat (limited to 'arch/x86/lib/getuser.S')
-rw-r--r--arch/x86/lib/getuser.S10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/lib/getuser.S b/arch/x86/lib/getuser.S
index b33b1fb1e6d4..156b9c804670 100644
--- a/arch/x86/lib/getuser.S
+++ b/arch/x86/lib/getuser.S
@@ -33,6 +33,7 @@
33#include <asm/asm-offsets.h> 33#include <asm/asm-offsets.h>
34#include <asm/thread_info.h> 34#include <asm/thread_info.h>
35#include <asm/asm.h> 35#include <asm/asm.h>
36#include <asm/smap.h>
36 37
37 .text 38 .text
38ENTRY(__get_user_1) 39ENTRY(__get_user_1)
@@ -40,8 +41,10 @@ ENTRY(__get_user_1)
40 GET_THREAD_INFO(%_ASM_DX) 41 GET_THREAD_INFO(%_ASM_DX)
41 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX 42 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
42 jae bad_get_user 43 jae bad_get_user
44 ASM_STAC
431: movzb (%_ASM_AX),%edx 451: movzb (%_ASM_AX),%edx
44 xor %eax,%eax 46 xor %eax,%eax
47 ASM_CLAC
45 ret 48 ret
46 CFI_ENDPROC 49 CFI_ENDPROC
47ENDPROC(__get_user_1) 50ENDPROC(__get_user_1)
@@ -53,8 +56,10 @@ ENTRY(__get_user_2)
53 GET_THREAD_INFO(%_ASM_DX) 56 GET_THREAD_INFO(%_ASM_DX)
54 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX 57 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
55 jae bad_get_user 58 jae bad_get_user
59 ASM_STAC
562: movzwl -1(%_ASM_AX),%edx 602: movzwl -1(%_ASM_AX),%edx
57 xor %eax,%eax 61 xor %eax,%eax
62 ASM_CLAC
58 ret 63 ret
59 CFI_ENDPROC 64 CFI_ENDPROC
60ENDPROC(__get_user_2) 65ENDPROC(__get_user_2)
@@ -66,8 +71,10 @@ ENTRY(__get_user_4)
66 GET_THREAD_INFO(%_ASM_DX) 71 GET_THREAD_INFO(%_ASM_DX)
67 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX 72 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
68 jae bad_get_user 73 jae bad_get_user
74 ASM_STAC
693: mov -3(%_ASM_AX),%edx 753: mov -3(%_ASM_AX),%edx
70 xor %eax,%eax 76 xor %eax,%eax
77 ASM_CLAC
71 ret 78 ret
72 CFI_ENDPROC 79 CFI_ENDPROC
73ENDPROC(__get_user_4) 80ENDPROC(__get_user_4)
@@ -80,8 +87,10 @@ ENTRY(__get_user_8)
80 GET_THREAD_INFO(%_ASM_DX) 87 GET_THREAD_INFO(%_ASM_DX)
81 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX 88 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
82 jae bad_get_user 89 jae bad_get_user
90 ASM_STAC
834: movq -7(%_ASM_AX),%_ASM_DX 914: movq -7(%_ASM_AX),%_ASM_DX
84 xor %eax,%eax 92 xor %eax,%eax
93 ASM_CLAC
85 ret 94 ret
86 CFI_ENDPROC 95 CFI_ENDPROC
87ENDPROC(__get_user_8) 96ENDPROC(__get_user_8)
@@ -91,6 +100,7 @@ bad_get_user:
91 CFI_STARTPROC 100 CFI_STARTPROC
92 xor %edx,%edx 101 xor %edx,%edx
93 mov $(-EFAULT),%_ASM_AX 102 mov $(-EFAULT),%_ASM_AX
103 ASM_CLAC
94 ret 104 ret
95 CFI_ENDPROC 105 CFI_ENDPROC
96END(bad_get_user) 106END(bad_get_user)