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 2bb0a183e06..00000000000 --- a/arch/x86/lib/getuser_32.S +++ /dev/null @@ -1,79 +0,0 @@ -/* - * __get_user functions. - * - * (C) Copyright 1998 Linus Torvalds - * - * These functions have a non-standard call interface - * to make them more efficient, especially as they - * return an error value in addition to the "real" - * return value. - */ -#include <linux/linkage.h> -#include <asm/dwarf2.h> -#include <asm/thread_info.h> -#include <asm/asm.h> - - -/* - * __get_user_X - * - * Inputs: %eax contains the address - * - * Outputs: %eax is error code (0 or -EFAULT) - * %edx contains zero-extended value - * - * These functions should not modify any other registers, - * as they get called from within inline assembly. - */ - -.text -ENTRY(__get_user_1) - CFI_STARTPROC - GET_THREAD_INFO(%_ASM_DX) - cmp TI_addr_limit(%_ASM_DX),%_ASM_AX - jae bad_get_user -1: movzb (%_ASM_AX),%edx - xor %eax,%eax - ret - CFI_ENDPROC -ENDPROC(__get_user_1) - -ENTRY(__get_user_2) - CFI_STARTPROC - add $1,%_ASM_AX - jc bad_get_user - GET_THREAD_INFO(%_ASM_DX) - cmp TI_addr_limit(%_ASM_DX),%_ASM_AX - jae bad_get_user -2: movzwl -1(%_ASM_AX),%edx - xor %eax,%eax - ret - CFI_ENDPROC -ENDPROC(__get_user_2) - -ENTRY(__get_user_4) - CFI_STARTPROC - add $3,%_ASM_AX - jc bad_get_user - GET_THREAD_INFO(%_ASM_DX) - cmp TI_addr_limit(%_ASM_DX),%_ASM_AX - jae bad_get_user -3: mov -3(%_ASM_AX),%edx - xor %eax,%eax - ret - CFI_ENDPROC -ENDPROC(__get_user_4) - -bad_get_user: - CFI_STARTPROC - xor %edx,%edx - mov $-14,%_ASM_AX - ret - CFI_ENDPROC -END(bad_get_user) - -.section __ex_table,"a" - _ASM_PTR 1b,bad_get_user - _ASM_PTR 2b,bad_get_user - _ASM_PTR 3b,bad_get_user -.previous |