1 /* Copyright (C) 1999, 2000, 2003, 2004, 2005 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. */
37 #define __socket P(__,socket)
39 #define __socket socket
43 #define PUSHARGS_1 mov.l r4,@-r15; \
44 cfi_adjust_cfa_offset (4); \
45 cfi_rel_offset (r4, 0)
46 #define PUSHARGS_2 mov.l r5,@-r15; \
47 cfi_adjust_cfa_offset (4); \
48 cfi_rel_offset (r5, 0); \
50 #define PUSHARGS_3 mov.l r6,@-r15; \
51 cfi_adjust_cfa_offset (4); \
52 cfi_rel_offset (r6, 0); \
54 #define PUSHARGS_4 mov.l r7,@-r15; \
55 cfi_adjust_cfa_offset (4); \
56 cfi_rel_offset (r7, 0); \
58 #define PUSHARGS_5 PUSHARGS_4 /* Caller has already pushed arg 5 */
59 #define PUSHARGS_6 PUSHARGS_4 /* Caller has already pushed arg 5,6 */
61 #define POPARGS_1 add #4,r15; cfi_adjust_cfa_offset (-4)
62 #define POPARGS_2 add #8,r15; cfi_adjust_cfa_offset (-8)
63 #define POPARGS_3 add #12,r15; cfi_adjust_cfa_offset (-12)
64 #define POPARGS_4 add #16,r15; cfi_adjust_cfa_offset (-16)
65 #define POPARGS_5 POPARGS_4
66 #define POPARGS_6 POPARGS_4
68 #define ADJUSTCFI_1 cfi_adjust_cfa_offset (4); \
70 #define ADJUSTCFI_2 cfi_adjust_cfa_offset (8); \
71 cfi_offset (r4, -4); \
73 #define ADJUSTCFI_3 cfi_adjust_cfa_offset (12); \
74 cfi_offset (r4, -4); \
75 cfi_offset (r5, -8); \
77 #define ADJUSTCFI_4 cfi_adjust_cfa_offset (16); \
78 cfi_offset (r4, -4); \
79 cfi_offset (r5, -8); \
80 cfi_offset (r6, -12); \
82 #define ADJUSTCFI_5 ADJUSTCFI_4
83 #define ADJUSTCFI_6 ADJUSTCFI_4
86 /* If we were called with no wrapper, this is really socket(). */
92 /* This will not work in the case of a socket call being interrupted
93 by a signal. If the signal handler uses any stack the arguments
94 to socket will be trashed. The results of a restart of any
95 socket call are then unpredictable. */
97 /* Push args onto the stack. */
100 #if defined NEED_CANCELLATION && defined CENABLE
105 /* Do the system call trap. */
106 mov #+P(SOCKOP_,socket), r4
111 /* Pop args off the stack */
117 not r1, r1 // r1=0 means r0 = -1 to -4095
118 tst r1, r1 // i.e. error in linux
121 SYSCALL_ERROR_HANDLER
123 /* Successful; return the syscall's value. */
127 #if defined NEED_CANCELLATION && defined CENABLE
129 /* Enable asynchronous cancellation. */
132 cfi_adjust_cfa_offset (4)
133 cfi_rel_offset (pr, 0)
136 cfi_adjust_cfa_offset (-4)
139 /* Do the system call trap. */
140 mov #+P(SOCKOP_,socket), r4
146 cfi_adjust_cfa_offset (4)
147 cfi_rel_offset (pr, 0)
149 cfi_adjust_cfa_offset (4)
150 cfi_rel_offset (r0, 0)
153 cfi_adjust_cfa_offset (-4)
156 cfi_adjust_cfa_offset (-4)
159 /* Pop args off the stack */
165 not r1, r1 // r1=0 means r0 = -1 to -4095
166 tst r1, r1 // i.e. error in linux
174 .long SYS_ify(socketcall)
176 PSEUDO_END (__socket)
178 #ifndef NO_WEAK_ALIAS
179 weak_alias (__socket, socket)