1 /* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
2 Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #include <socketcall.h>
23 /* &%/$&!! preprocessor */
24 #define P(a, b) P2(a, b)
28 /* The socket-oriented system calls are handled unusally in Linux.
29 They are all gated through the single `socketcall' system call number.
30 `socketcall' takes two arguments: the first is the subcode, specifying
31 which socket function is being called; and the second is a pointer to
32 the arguments to the specific function.
34 The .S files for the other calls just #define socket and #include this. */
38 #define __socket P(__,socket)
40 #define __socket socket
44 #ifndef NARGS /* the socket.o object is compiled directly ... */
51 /* Save registers and setup stack. */
52 stm %r6,%r15,24(%r15) /* save registers */
54 l %r0,4(0,%r15) /* load eos */
55 ahi %r15,-120 /* buy stack space */
56 st %r1,0(0,%r15) /* store back chain */
57 st %r0,4(0,%r15) /* store eos */
59 /* Reorder arguments */
61 mvc 0x74(4,%r15),216(%r15) /* move between parameter lists */
64 st %r6,0x70(0,%r15) /* store into parameter list */
67 st %r5,0x6C(0,%r15) /* store into parameter list */
70 st %r4,0x68(0,%r15) /* store into parameter list */
73 st %r3,0x64(0,%r15) /* store into parameter list */
76 /* load subcode for socket syscall */
77 lhi %r2,P(SOCKOP_,socket)
78 la %r3,0x60(0,%r15) /* load address of parameter list */
80 /* Do the system call trap. */
81 svc SYS_ify(socketcall)
83 l %r15,0(0,%r15) /* load back chain */
84 lm %r6,15,24(%r15) /* load registers */
86 /* gpr2 is < 0 if there was an error. */
89 jnl SYSCALL_ERROR_LABEL
91 /* Successful; return the syscall's value. */
97 weak_alias (__socket, socket)