diff options
Diffstat (limited to 'xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/getuser.S')
| -rw-r--r-- | xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/getuser.S | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/getuser.S b/xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/getuser.S deleted file mode 100644 index c244721e70..0000000000 --- a/xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/getuser.S +++ /dev/null @@ -1,73 +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. - */ - -/* - * __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. - */ - -addr_limit = 12 - -.text -.align 4 -.globl __get_user_1 -__get_user_1: - movl %esp,%edx - andl $0xffffe000,%edx - cmpl addr_limit(%edx),%eax - jae bad_get_user -1: movzbl (%eax),%edx - xorl %eax,%eax - ret - -.align 4 -.globl __get_user_2 -__get_user_2: - addl $1,%eax - movl %esp,%edx - jc bad_get_user - andl $0xffffe000,%edx - cmpl addr_limit(%edx),%eax - jae bad_get_user -2: movzwl -1(%eax),%edx - xorl %eax,%eax - ret - -.align 4 -.globl __get_user_4 -__get_user_4: - addl $3,%eax - movl %esp,%edx - jc bad_get_user - andl $0xffffe000,%edx - cmpl addr_limit(%edx),%eax - jae bad_get_user -3: movl -3(%eax),%edx - xorl %eax,%eax - ret - -bad_get_user: - xorl %edx,%edx - movl $-14,%eax - ret - -.section __ex_table,"a" - .long 1b,bad_get_user - .long 2b,bad_get_user - .long 3b,bad_get_user -.previous |