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
|
/* Copyright (C) 1997, 1998, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Miguel de Icaza <miguel@gnu.ai.mit.edu>, 1997.
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-cancel.h>
#include <socketcall.h>
#define P(a, b) P2(a, b)
#define P2(a, b) a##b
#ifndef NARGS
#ifdef socket
#error NARGS not defined
#endif
#define NARGS 3
#endif
.text
/* The socket-oriented system calls are handled unusually 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. */
#ifndef __socket
# ifndef NO_WEAK_ALIAS
# define __socket P(__,socket)
# else
# define __socket socket
# endif
#endif
.globl __syscall_error
ENTRY (__socket)
/* Drop up to 6 arguments (recvfrom) into the memory allocated by
the caller for varargs, since that's really what we have. */
st %o0, [%sp + 68 + 0]
st %o1, [%sp + 68 + 4]
#if NARGS > 2
st %o2, [%sp + 68 + 8]
#if NARGS > 3
st %o3, [%sp + 68 + 12]
#if NARGS > 4
st %o4, [%sp + 68 + 16]
#if NARGS > 5
st %o5, [%sp + 68 + 20]
#endif
#endif
#endif
#endif
#if defined NEED_CANCELLATION && defined CENABLE
SINGLE_THREAD_P
cmp %g1, 0
bne .Lsocket_cancel
#endif
mov P(SOCKOP_,socket), %o0 /* arg 1: socket subfunction */
add %sp, 68, %o1 /* arg 2: parameter block */
LOADSYSCALL(socketcall)
t 0x10
bcc 1f
mov %o7, %g1
call __syscall_error
mov %g1, %o7
1: jmpl %o7 + 8, %g0
nop
#if defined NEED_CANCELLATION && defined CENABLE
.Lsocket_cancel:
save %sp, -96, %sp
cfi_def_cfa_register(%fp)
cfi_window_save
cfi_register(%o7, %i7)
CENABLE
nop
mov %o0, %l0
add %sp, 68 + 96, %o1
mov P(SOCKOP_,socket), %o0
LOADSYSCALL(socketcall)
t 0x10
bcc 1f
mov %o0, %l1
CDISABLE;
mov %l0, %o0;
call __syscall_error;
mov %l1, %o0;
b 1f
mov -1, %l1;
1: CDISABLE
mov %l0, %o0
2: jmpl %i7 + 8, %g0
restore %g0, %l1, %o0
#endif
END (__socket)
#ifndef NO_WEAK_ALIAS
weak_alias (__socket, socket)
#endif
|
