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Diffstat (limited to 'sysdeps/unix/sysv/linux/m68k/socket.S')
-rw-r--r--sysdeps/unix/sysv/linux/m68k/socket.S111
1 files changed, 111 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/m68k/socket.S b/sysdeps/unix/sysv/linux/m68k/socket.S
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index 0000000000..1d10f33e17
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+++ b/sysdeps/unix/sysv/linux/m68k/socket.S
@@ -0,0 +1,111 @@
+/* Copyright (C) 1996, 1997, 1998 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, 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
+
+ .text
+/* 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. */
+
+#ifndef __socket
+#ifndef NO_WEAK_ALIAS
+#define __socket P(__,socket)
+#else
+#define __socket socket
+#endif
+#endif
+
+.globl __socket
+ENTRY (__socket)
+#if defined NEED_CANCELLATION && defined CENABLE
+ SINGLE_THREAD_P
+ jne 1f
+#endif
+
+ /* Save registers. */
+ move.l %d2, %a0
+
+ move.l #SYS_ify (socketcall), %d0 /* System call number in %d0. */
+
+ /* Use ## so `socket' is a separate token that might be #define'd. */
+ move.l #P (SOCKOP_,socket), %d1 /* Subcode is first arg to syscall. */
+ lea 4(%sp), %a1 /* Address of args is 2nd arg. */
+ move.l %a1, %d2
+
+ /* Do the system call trap. */
+ trap #0
+
+ /* Restore registers. */
+ move.l %a0, %d2
+
+ /* %d0 is < 0 if there was an error. */
+ tst.l %d0
+ jmi SYSCALL_ERROR_LABEL
+
+ /* Successful; return the syscall's value. */
+ rts
+
+#if defined NEED_CANCELLATION && defined CENABLE
+1: /* Enable asynchronous cancellation. */
+ CENABLE
+
+ /* Save registers. */
+ move.l %d2, -(%sp)
+ move.l %d0, -(%sp)
+
+ move.l #SYS_ify (socketcall), %d0 /* System call number in %d0. */
+
+ /* Use ## so `socket' is a separate token that might be #define'd. */
+ move.l #P (SOCKOP_,socket), %d1 /* Subcode is first arg to syscall. */
+ lea 4+8(%sp), %a1 /* Address of args is 2nd arg. */
+ move.l %a1, %d2
+
+ /* Do the system call trap. */
+ trap #0
+
+ /* Restore cancellation. */
+ move.l %d0, %d2
+ CDISABLE
+ addq.l #4, %sp
+ move.l %d2, %d0
+
+ /* Restore registers. */
+ move.l (%sp)+, %d2
+
+ /* %d0 is < 0 if there was an error. */
+ tst.l %d0
+ jmi SYSCALL_ERROR_LABEL
+
+ /* Successful; return the syscall's value. */
+ rts
+#endif
+
+PSEUDO_END (__socket)
+
+#ifndef NO_WEAK_ALIAS
+weak_alias (__socket, socket)
+#endif