diff options
Diffstat (limited to 'arch/x86/lib')
| -rw-r--r-- | arch/x86/lib/getuser_64.S | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/arch/x86/lib/getuser_64.S b/arch/x86/lib/getuser_64.S index 2b003d31348..df37d3a9ba2 100644 --- a/arch/x86/lib/getuser_64.S +++ b/arch/x86/lib/getuser_64.S @@ -47,49 +47,40 @@ ENDPROC(__get_user_1) ENTRY(__get_user_2) CFI_STARTPROC - GET_THREAD_INFO(%rdx) addq $1,%rax - jc 20f + jc bad_get_user + GET_THREAD_INFO(%rdx) cmpq threadinfo_addr_limit(%rdx),%rax - jae 20f - decq %rax -2: movzwl (%rax),%edx + jae bad_get_user +2: movzwl -1(%rax),%edx xorl %eax,%eax ret -20: decq %rax - jmp bad_get_user CFI_ENDPROC ENDPROC(__get_user_2) ENTRY(__get_user_4) CFI_STARTPROC - GET_THREAD_INFO(%rdx) addq $3,%rax - jc 30f + jc bad_get_user + GET_THREAD_INFO(%rdx) cmpq threadinfo_addr_limit(%rdx),%rax - jae 30f - subq $3,%rax -3: movl (%rax),%edx + jae bad_get_user +3: movl -3(%rax),%edx xorl %eax,%eax ret -30: subq $3,%rax - jmp bad_get_user CFI_ENDPROC ENDPROC(__get_user_4) ENTRY(__get_user_8) CFI_STARTPROC - GET_THREAD_INFO(%rdx) addq $7,%rax - jc 40f + jc bad_get_user + GET_THREAD_INFO(%rdx) cmpq threadinfo_addr_limit(%rdx),%rax - jae 40f - subq $7,%rax -4: movq (%rax),%rdx + jae bad_get_user +4: movq -7(%rax),%rdx xorl %eax,%eax ret -40: subq $7,%rax - jmp bad_get_user CFI_ENDPROC ENDPROC(__get_user_8) |