1*04459484Sderaadt /* $OpenBSD: SYS.h,v 1.6 2023/12/11 22:29:24 deraadt Exp $ */ 2d6979ba5Sderaadt 3d6979ba5Sderaadt /* 4d6979ba5Sderaadt * Copyright (c) 2004 Dale Rahn 5d6979ba5Sderaadt * 6d6979ba5Sderaadt * Redistribution and use in source and binary forms, with or without 7d6979ba5Sderaadt * modification, are permitted provided that the following conditions 8d6979ba5Sderaadt * are met: 9d6979ba5Sderaadt * 1. Redistributions of source code must retain the above copyright 10d6979ba5Sderaadt * notice, this list of conditions and the following disclaimer. 11d6979ba5Sderaadt * 2. Redistributions in binary form must reproduce the above copyright 12d6979ba5Sderaadt * notice, this list of conditions and the following disclaimer in the 13d6979ba5Sderaadt * documentation and/or other materials provided with the distribution. 14d6979ba5Sderaadt * 15d6979ba5Sderaadt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16d6979ba5Sderaadt * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17d6979ba5Sderaadt * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18d6979ba5Sderaadt * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19d6979ba5Sderaadt * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20d6979ba5Sderaadt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21d6979ba5Sderaadt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22d6979ba5Sderaadt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23d6979ba5Sderaadt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24d6979ba5Sderaadt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25d6979ba5Sderaadt * SUCH DAMAGE. 26d6979ba5Sderaadt * 27d6979ba5Sderaadt */ 28d6979ba5Sderaadt 29d6979ba5Sderaadt #include <machine/asm.h> 30d6979ba5Sderaadt #include <sys/syscall.h> 31d6979ba5Sderaadt 3283762a71Sderaadt #define PINSYSCALL(sysno, label) \ 33a0ef76c2Sderaadt .pushsection .openbsd.syscalls,"",%progbits ;\ 34*04459484Sderaadt .p2align 2 ;\ 3583762a71Sderaadt .long label ;\ 3683762a71Sderaadt .long sysno ;\ 3783762a71Sderaadt .popsection 3883762a71Sderaadt 39d6979ba5Sderaadt #define SYSTRAP(x) \ 40d6979ba5Sderaadt ldr r12, =SYS_ ## x ;\ 4183762a71Sderaadt 99: swi 0 ;\ 4283762a71Sderaadt PINSYSCALL(SYS_ ## x, 99b) ;\ 43f74a2b77Sderaadt dsb nsh ;\ 44f74a2b77Sderaadt isb 45d6979ba5Sderaadt 46d6979ba5Sderaadt #define DL_SYSCALL(n) \ 47d6979ba5Sderaadt .global __CONCAT(_dl_,n) ;\ 48d6979ba5Sderaadt .type __CONCAT(_dl_,n)%function ;\ 49d6979ba5Sderaadt __CONCAT(_dl_,n): ;\ 50d6979ba5Sderaadt SYSTRAP(n) ;\ 51d6979ba5Sderaadt bcs .L_cerr ;\ 52d6979ba5Sderaadt mov pc, lr 53d6979ba5Sderaadt 54d6979ba5Sderaadt .L_cerr: 55d6979ba5Sderaadt rsb r0, r0, #0 /* r0 = -errno */ 56d6979ba5Sderaadt mov pc, lr 57