1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2002 Benno Rice. All rights reserved. 5 * Copyright (c) 2002 David E. O'Brien. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the author nor the names of any contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $NetBSD: SYS.h,v 1.8 2002/01/14 00:55:56 thorpej Exp $ 32 */ 33 34 #include <sys/syscall.h> 35 #include <machine/asm.h> 36 37 #define _SYSCALL(name) \ 38 .text; \ 39 .align 2; \ 40 li 0,(SYS_##name); \ 41 sc 42 43 #define _SYSCALL_BODY(name) \ 44 _SYSCALL(name); \ 45 bnslr; \ 46 mflr %r0; \ 47 std %r0,16(%r1); \ 48 stdu %r1,-48(%r1); \ 49 bl CNAME(HIDENAME(cerror)); \ 50 nop; \ 51 addi %r1,%r1,48; \ 52 ld %r0,16(%r1); \ 53 mtlr %r0; \ 54 blr 55 56 #define PSEUDO(name) \ 57 .text; \ 58 .align 2; \ 59 ENTRY(__sys_##name); \ 60 WEAK_REFERENCE(__sys_##name, _##name); \ 61 _SYSCALL_BODY(name); \ 62 END(__sys_##name) 63 64 #define RSYSCALL(name) \ 65 .text; \ 66 .align 2; \ 67 ENTRY(__sys_##name); \ 68 WEAK_REFERENCE(__sys_##name, name); \ 69 WEAK_REFERENCE(__sys_##name, _##name); \ 70 _SYSCALL_BODY(name); \ 71 END(__sys_##name) 72