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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/* Copyright (C) 2002-2014 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, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <tls.h>
#ifndef __ASSEMBLER__
# include <nptl/pthreadP.h>
#endif
#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
# undef PSEUDO
# define PSEUDO(name, syscall_name, args) \
.text; \
.globl __syscall_error; \
ENTRY(name) \
ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;\
brnz,pn %g1, 1f; \
.type __##syscall_name##_nocancel,@function; \
.globl __##syscall_name##_nocancel; \
__##syscall_name##_nocancel: \
mov SYS_ify(syscall_name), %g1; \
ta 0x6d; \
bcc,pt %xcc, 8f; \
mov %o7, %g1; \
call __syscall_error; \
mov %g1, %o7; \
8: jmpl %o7 + 8, %g0; \
nop; \
.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;\
1: save %sp, -192, %sp; \
cfi_def_cfa_register(%fp); \
cfi_window_save; \
cfi_register(%o7, %i7); \
CENABLE; \
nop; \
mov %o0, %l0; \
COPY_ARGS_##args \
mov SYS_ify(syscall_name), %g1; \
ta 0x6d; \
bcc,pt %xcc, 1f; \
mov %o0, %l1; \
CDISABLE; \
mov %l0, %o0; \
call __syscall_error; \
mov %l1, %o0; \
ba,pt %xcc, 2f; \
mov -1, %l1; \
1: CDISABLE; \
mov %l0, %o0; \
2: jmpl %i7 + 8, %g0; \
restore %g0, %l1, %o0;
# if IS_IN (libpthread)
# define CENABLE call __pthread_enable_asynccancel
# define CDISABLE call __pthread_disable_asynccancel
# elif IS_IN (libc)
# define CENABLE call __libc_enable_asynccancel
# define CDISABLE call __libc_disable_asynccancel
# elif IS_IN (librt)
# define CENABLE call __librt_enable_asynccancel
# define CDISABLE call __librt_disable_asynccancel
# else
# error Unsupported library
# endif
#define COPY_ARGS_0 /* Nothing */
#define COPY_ARGS_1 COPY_ARGS_0 mov %i0, %o0;
#define COPY_ARGS_2 COPY_ARGS_1 mov %i1, %o1;
#define COPY_ARGS_3 COPY_ARGS_2 mov %i2, %o2;
#define COPY_ARGS_4 COPY_ARGS_3 mov %i3, %o3;
#define COPY_ARGS_5 COPY_ARGS_4 mov %i4, %o4;
#define COPY_ARGS_6 COPY_ARGS_5 mov %i5, %o5;
# ifndef __ASSEMBLER__
# define SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
header.multiple_threads) == 0, 1)
# else
# define SINGLE_THREAD_P ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1
# endif
#elif !defined __ASSEMBLER__
# define SINGLE_THREAD_P (1)
# define NO_CANCELLATION 1
#endif
#ifndef __ASSEMBLER__
# define RTLD_SINGLE_THREAD_P \
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
header.multiple_threads) == 0, 1)
#endif
|
GitWeb