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
110
111
112
113
114
115
116
117
118
|
/* Copyright (C) 1995-2014 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, see
<http://www.gnu.org/licenses/>. */
#include <sysdep-cancel.h>
#include <socketcall.h>
#define P(a, b) P2(a, b)
#define P2(a, b) a##b
/* The socket-oriented system calls are handled unusally in Linux.
They are all gated through the single `socketcall' system call number.
`socketcall' takes two arguments: the first is the subcode, specifying
which socket function is being called; and the second is a pointer to
the arguments to the specific function.
The .S files for the other calls just #define socket and #include this.
They also #define a 'number-of-arguments' word in NARGS, which
defaults to 3. */
#ifndef NARGS
#ifdef socket
#error NARGS not defined
#endif
#define NARGS 3
#endif
/* 0(r1) and 4(r1) are reserved by the ABI, 8(r1), 12(r1), 16(r1) are used
for temp saves. 44(r1) is used to save r30. */
#define stackblock 20
#ifndef __socket
# ifndef NO_WEAK_ALIAS
# define __socket P(__,socket)
# else
# define __socket socket
# endif
#endif
.text
ENTRY(__socket)
stwu r1,-48(r1)
cfi_adjust_cfa_offset(48)
#if NARGS >= 1
stw r3,stackblock(r1)
#endif
#if NARGS >= 2
stw r4,4+stackblock(r1)
#endif
#if NARGS >= 3
stw r5,8+stackblock(r1)
#endif
#if NARGS >= 4
stw r6,12+stackblock(r1)
#endif
#if NARGS >= 5
stw r7,16+stackblock(r1)
#endif
#if NARGS >= 6
stw r8,20+stackblock(r1)
#endif
#if NARGS >= 7
#error too many arguments!
#endif
#if defined NEED_CANCELLATION && defined CENABLE
SINGLE_THREAD_P
bne- .Lsocket_cancel
#endif
li r3,P(SOCKOP_,socket)
addi r4,r1,stackblock
DO_CALL(SYS_ify(socketcall))
addi r1,r1,48
PSEUDO_RET
#if defined NEED_CANCELLATION && defined CENABLE
.Lsocket_cancel:
mflr r9
stw r9,52(r1)
cfi_offset (lr, 4)
CENABLE
stw r3,16(r1)
li r3,P(SOCKOP_,socket)
addi r4,r1,stackblock
DO_CALL(SYS_ify(socketcall))
mfcr r0
stw r3,8(r1)
stw r0,12(r1)
lwz r3,16(r1)
CDISABLE
lwz r4,52(r1)
lwz r0,12(r1)
lwz r3,8(r1)
mtlr r4
mtcr r0
addi r1,r1,48
PSEUDO_RET
#endif
PSEUDO_END (__socket)
#ifndef NO_WEAK_ALIAS
weak_alias (__socket, socket)
#endif
|
