2 * __get_user functions.
4 * (C) Copyright 1998 Linus Torvalds
6 * These functions have a non-standard call interface
7 * to make them more efficient, especially as they
8 * return an error value in addition to the "real"
15 * Inputs: %rax contains the address
17 * Outputs: %rax is error code (0 or -EFAULT)
18 * %rdx contains zero-extended value
22 * These functions should not modify any other registers,
23 * as they get called from within inline assembly.
26 #include <linux/linkage.h>
28 #include <asm/errno.h>
29 #include <asm/offset.h>
30 #include <asm/thread_info.h>
37 cmpq threadinfo_addr_limit(%rbx),%rax
49 cmpq threadinfo_addr_limit(%rbx),%rax
51 2: movzwl -1(%rax),%edx
61 cmpq threadinfo_addr_limit(%rbx),%rax
73 cmpq threadinfo_addr_limit(%rbx),%rax
85 .section __ex_table,"a"