1 /* Copyright (C) 1999, 2000, 2003 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 #include <sysdep-cancel.h>
20 #include <socketcall.h>
23 #define P(a, b) P2(a, b)
27 /* The socket-oriented system calls are handled unusally in Linux.
28 They are all gated through the single `socketcall' system call number.
29 `socketcall' takes two arguments: the first is the subcode, specifying
30 which socket function is being called; and the second is a pointer to
31 the arguments to the specific function.
33 The .S files for the other calls just #define socket and #include this. */
36 #define __socket P(__,socket)
39 #define PUSHARGS_1 mov.l r4,@-r15
40 #define PUSHARGS_2 mov.l r5,@-r15; PUSHARGS_1
41 #define PUSHARGS_3 mov.l r6,@-r15; PUSHARGS_2
42 #define PUSHARGS_4 mov.l r7,@-r15; PUSHARGS_3
43 #define PUSHARGS_5 PUSHARGS_4 /* Caller has already pushed arg 5 */
44 #define PUSHARGS_6 PUSHARGS_4 /* Caller has already pushed arg 5,6 */
46 #define POPARGS_1 add #4,r15
47 #define POPARGS_2 add #8,r15
48 #define POPARGS_3 add #12,r15
49 #define POPARGS_4 add #16,r15
50 #define POPARGS_5 add #16,r15
51 #define POPARGS_6 add #16,r15
54 #define NARGS 3 /* If we were called with no wrapper, this is really socket() */
59 /* This will not work in the case of a socket call being interrupted
60 by a signal. If the signal handler uses any stack the arguments
61 to socket will be trashed. The results of a restart of any
62 socket call are then unpredictable. */
64 /* Push args onto the stack. */
67 #if defined NEED_CANCELLATION && defined CENABLE
72 /* Do the system call trap. */
73 mov #+P(SOCKOP_,socket), r4
78 /* Pop args off the stack */
84 not r1, r1 // r1=0 means r0 = -1 to -4095
85 tst r1, r1 // i.e. error in linux
90 /* Successful; return the syscall's value. */
94 #if defined NEED_CANCELLATION && defined CENABLE
96 /* Enable asynchronous cancellation. */
101 /* Do the system call trap. */
102 mov #+P(SOCKOP_,socket), r4
113 /* Pop args off the stack */
119 not r1, r1 // r1=0 means r0 = -1 to -4095
120 tst r1, r1 // i.e. error in linux
127 .long SYS_ify(socketcall)
129 PSEUDO_END (__socket)
131 weak_alias (__socket, socket)