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 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
/* Because the Linux version is in fact m68k/ELF and the start.? file
for this system (sysdeps/m68k/elf/start.S) is also used by The Hurd
and therefore this files must not contain the definition of the
`errno' variable (I don't know why, ask Roland), we have to define
it somewhere else.
...and this place is here. */
.bss
.globl errno
.type errno,@object
.size errno,4
errno:
.space 4
weak_alias (errno, _errno)
/* The following code is only used in the shared library when we
compile the reentrant version. Otherwise each system call defines
each own version. */
/* The syscall stubs jump here when they detect an error. */
#undef CALL_MCOUNT
#define CALL_MCOUNT
.text
ENTRY(__syscall_error)
#ifndef PIC
#ifndef _LIBC_REENTRANT
lcr %r2,%r2
larl %r1,errno
st %r2,0(%r1)
lghi %r2,-1
br %r14
#else
stmg %r13,%r15,104(%r15)
lgr %r0,%r15
aghi %r15,-160
lcr %r13,%r2
stg %r0,0(%r15)
brasl %r14,__errno_location
st %r13,0(%r2)
lmg %r13,%r15,264(%r15)
lghi %r2,-1
br %r14
#endif
#else
#ifndef _LIBC_REENTRANT
larl %r1,_GLOBAL_OFFSET_TABLE_
lg %r1,errno@GOT(%r1)
lcr %r2,%r2
st %r2,0(%r1)
lghi %r2,-1
br %r14
#else
stmg %r13,%r15,104(%r15)
lgr %r0,%r15
aghi %r15,-160
lcr %r13,%r2
stg %r0,0(%r15)
brasl %r14,__errno_location@PLT
st %r13,0(%r2)
lmg %r13,%r15,264(%r15)
lghi %r2,-1
br %r14
#endif
#endif
END (__syscall_error)
|
GitWeb