diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sh/socket.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sh/socket.S | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sh/socket.S b/sysdeps/unix/sysv/linux/sh/socket.S new file mode 100644 index 0000000000..814380e61d --- /dev/null +++ b/sysdeps/unix/sysv/linux/sh/socket.S @@ -0,0 +1,116 @@ +/* Copyright (C) 1999, 2000 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sysdep.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 +#define __socket P(__,socket) +#endif + +#define PUSHARGS_1 mov.l r4,@-r15 +#define PUSHARGS_2 mov.l r5,@-r15; PUSHARGS_1 +#define PUSHARGS_3 mov.l r6,@-r15; PUSHARGS_2 +#define PUSHARGS_4 mov.l r7,@-r15; PUSHARGS_3 +#define PUSHARGS_5 PUSHARGS_4 /* Caller has already pushed arg 5 */ +#define PUSHARGS_6 PUSHARGS_4 /* Caller has already pushed arg 5,6 */ + +#define POPARGS_1 add #4,r15 +#define POPARGS_2 add #8,r15 +#define POPARGS_3 add #12,r15 +#define POPARGS_4 add #16,r15 +#define POPARGS_5 add #16,r15 +#define POPARGS_6 add #16,r15 + +#ifndef NARGS +#define NARGS 3 /* If we were called with no wrapper, this is really socket() */ +#endif + +.globl __socket +ENTRY (__socket) + /* This will not work in the case of a socket call being interrupted + by a signal. If the signal handler uses any stack the arguments + to socket will be trashed. The results of a restart of any + socket call are then unpredictable. */ + + /* Push args onto the stack. */ + P(PUSHARGS_,NARGS) + + /* Do the system call trap. */ + mov #+P(SOCKOP_,socket), r4 + mov r15, r5 + mov.l .L1,r0 + trapa #0 + + /* Pop args off the stack */ + P(POPARGS_,NARGS) + + mov r0, r1 + mov #-12, r2 + shad r2, r1 + not r1, r1 // r1=0 means r0 = -1 to -4095 + tst r1, r1 // i.e. error in linux + bf 1f + + mov.l .L2, r1 +#ifdef SHARED + mov r0, r2 + mov.l r12, @-r15 + sts.l pr, @-r15 + mov.l 0f, r12 + mova 0f, r0 + add r0, r12 + mova .L2, r0 + add r0, r1 + jsr @r1 + mov r2, r0 + lds.l @r15+, pr + rts + mov.l @r15+, r12 + .align 2 +0: + .long _GLOBAL_OFFSET_TABLE_ +#else + jmp @r1 + nop +#endif +1: + /* Successful; return the syscall's value. */ + rts + nop + .align 2 +.L1: + .long SYS_ify(socketcall) +.L2: + .long PLTJMP(C_SYMBOL_NAME(__syscall_error)) + +PSEUDO_END (__socket) + +weak_alias (__socket, socket) |