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
91
92
|
/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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>
#include <tls.h>
#ifndef __ASSEMBLER__
# include <nptl/pthreadP.h>
#endif
#if !defined NOT_IN_libc || defined IS_IN_libpthread
# undef PSEUDO
# define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY (name) \
cmpl $0, %gs:MULTIPLE_THREADS_OFFSET; \
jne L(pseudo_cancel); \
DO_CALL (syscall_name, args); \
cmpl $-4095, %eax; \
jae SYSCALL_ERROR_LABEL; \
ret; \
L(pseudo_cancel): \
CENABLE \
SAVE_OLDTYPE_##args \
PUSHARGS_##args \
DOCARGS_##args \
movl $SYS_ify (syscall_name), %eax; \
ENTER_KERNEL \
POPARGS_##args; \
POPCARGS_##args \
cmpl $-4095, %eax; \
jae SYSCALL_ERROR_LABEL; \
L(pseudo_end):
# define SAVE_OLDTYPE_0 movl %eax, %edx;
# define SAVE_OLDTYPE_1 SAVE_OLDTYPE_0
# define SAVE_OLDTYPE_2 pushl %eax;
# define SAVE_OLDTYPE_3 SAVE_OLDTYPE_2
# define SAVE_OLDTYPE_4 SAVE_OLDTYPE_2
# define SAVE_OLDTYPE_5 SAVE_OLDTYPE_2
# define DOCARGS_0 DOARGS_0
# define DOCARGS_1 DOARGS_1
# define DOCARGS_2 _DOARGS_2 (12)
# define DOCARGS_3 _DOARGS_3 (20)
# define DOCARGS_4 _DOARGS_4 (28)
# define DOCARGS_5 _DOARGS_5 (36)
# ifdef IS_IN_libpthread
# define CENABLE call __pthread_enable_asynccancel;
# define CDISABLE call __pthread_disable_asynccancel
# else
# define CENABLE call __libc_enable_asynccancel;
# define CDISABLE call __libc_disable_asynccancel
# endif
# define POPCARGS_0 pushl %eax; movl %ecx, %eax; CDISABLE; popl %eax;
# define POPCARGS_1 POPCARGS_0
# define POPCARGS_2 xchgl (%esp), %eax; CDISABLE; popl %eax;
# define POPCARGS_3 POPCARGS_2
# define POPCARGS_4 POPCARGS_2
# define POPCARGS_5 POPCARGS_2
# ifndef __ASSEMBLER__
# define SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
header.data.multiple_threads) == 0, 1)
# else
# define SINGLE_THREAD_P cmpl $0, %gs:MULTIPLE_THREADS_OFFSET
# endif
#elif !defined __ASSEMBLER__
/* This code should never be used but we define it anyhow. */
# define SINGLE_THREAD_P (1)
#endif
|
