1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/* Copyright (C) 2001, 2002, 2004, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
#define _ERRNO_H
#include <bits/errno.h>
#include <bp-asm.h>
#include <bp-sym.h>
#include <tls.h>
#ifdef IS_IN_rtld
# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
#endif
.globl C_SYMBOL_NAME(errno)
.globl syscall_error
#undef syscall_error
#ifdef NO_UNDERSCORES
__syscall_error:
#else
syscall_error:
#endif
#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
/* We translate the system's EWOULDBLOCK error into EAGAIN.
The GNU C library always defines EWOULDBLOCK==EAGAIN.
EWOULDBLOCK_sys is the original number. */
cmpq $EWOULDBLOCK_sys, %rax /* Is it the old EWOULDBLOCK? */
jne notb /* Branch if not. */
movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */
notb:
#endif
#if USE___THREAD
# ifdef PIC
movq C_SYMBOL_NAME(errno@GOTTPOFF)(%rip), %rcx
movl %eax, %fs:0(%rcx)
# else
movl %eax, %fs:C_SYMBOL_NAME(errno@TPOFF)
# endif
#elif !defined PIC
# ifndef _LIBC_REENTRANT
movl %eax, C_SYMBOL_NAME(errno)
# else
pushq %rax
cfi_adjust_cfa_offset(8)
PUSH_ERRNO_LOCATION_RETURN
call BP_SYM (__errno_location)
POP_ERRNO_LOCATION_RETURN
popq %rcx
cfi_adjust_cfa_offset(-8)
movl %ecx, (%rax)
# endif
#else
# if RTLD_PRIVATE_ERRNO
leaq rtld_errno(%rip), %rcx
movl %eax, (%rcx)
# elif !defined _LIBC_REENTRANT
movq C_SYMBOL_NAME(errno)@GOTPCREL(%rip), %rcx
movl %eax, (%rcx)
# else
pushq %rax
cfi_adjust_cfa_offset(8)
PUSH_ERRNO_LOCATION_RETURN
call C_SYMBOL_NAME (BP_SYM (__errno_location)@PLT)
POP_ERRNO_LOCATION_RETURN
popq %rcx
cfi_adjust_cfa_offset(-8)
movl %ecx, (%rax)
# endif
#endif
movq $-1, %rax
ret
#undef __syscall_error
END (__syscall_error)
|
