1/* 2 * Copyright (C) 2009 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28#include <sys/linux-syscalls.h> 29 30.text 31.type syscall, @function 32.globl syscall 33.align 4 34 35/* 36 * Current implementation assumes that the all syscall 37 * has maximum 7 arguments. 38 */ 39syscall: 40 /* get args */ 41 mov r4, r3 /* system call number */ 42 mov r5, r4 43 mov r6, r5 44 mov r7, r6 45 mov.l @r15, r7 46 mov.l @(4, r15), r0 47 mov.l @(8, r15), r1 48 mov.l @(12, r15), r2 49 50 /* invoke trap */ 51 trapa #(7 + 0x10) /* assuming 7 arguments */ 52 53 /* check return value */ 54 cmp/pz r0 55 bt end 56 57 /* keep error number */ 58 mov.l r0, @-r15 59 mov.l 0f, r1 60 jsr @r1 61 mov r0, r4 62 mov.l @r15+, r0 63 64end: 65 rts 66 nop 67 68 .align 2 690: .long __set_errno 70