diff options
Diffstat (limited to 'arch/x86_64/lib/getuser.S')
| -rw-r--r-- | arch/x86_64/lib/getuser.S | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/arch/x86_64/lib/getuser.S b/arch/x86_64/lib/getuser.S index 3844d5e885a..5448876261f 100644 --- a/arch/x86_64/lib/getuser.S +++ b/arch/x86_64/lib/getuser.S @@ -27,25 +27,26 @@ */ #include <linux/linkage.h> +#include <asm/dwarf2.h> #include <asm/page.h> #include <asm/errno.h> #include <asm/asm-offsets.h> #include <asm/thread_info.h> .text - .p2align 4 -.globl __get_user_1 -__get_user_1: +ENTRY(__get_user_1) + CFI_STARTPROC GET_THREAD_INFO(%r8) cmpq threadinfo_addr_limit(%r8),%rcx jae bad_get_user 1: movzb (%rcx),%edx xorl %eax,%eax ret + CFI_ENDPROC +ENDPROC(__get_user_1) - .p2align 4 -.globl __get_user_2 -__get_user_2: +ENTRY(__get_user_2) + CFI_STARTPROC GET_THREAD_INFO(%r8) addq $1,%rcx jc 20f @@ -57,10 +58,11 @@ __get_user_2: ret 20: decq %rcx jmp bad_get_user + CFI_ENDPROC +ENDPROC(__get_user_2) - .p2align 4 -.globl __get_user_4 -__get_user_4: +ENTRY(__get_user_4) + CFI_STARTPROC GET_THREAD_INFO(%r8) addq $3,%rcx jc 30f @@ -72,10 +74,11 @@ __get_user_4: ret 30: subq $3,%rcx jmp bad_get_user + CFI_ENDPROC +ENDPROC(__get_user_4) - .p2align 4 -.globl __get_user_8 -__get_user_8: +ENTRY(__get_user_8) + CFI_STARTPROC GET_THREAD_INFO(%r8) addq $7,%rcx jc 40f @@ -87,11 +90,16 @@ __get_user_8: ret 40: subq $7,%rcx jmp bad_get_user + CFI_ENDPROC +ENDPROC(__get_user_8) bad_get_user: + CFI_STARTPROC xorl %edx,%edx movq $(-EFAULT),%rax ret + CFI_ENDPROC +END(bad_get_user) .section __ex_table,"a" .quad 1b,bad_get_user |