1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 37 * $NetBSD: SYS.h,v 1.5 2002/06/03 18:30:32 fvdl Exp $ 38 */ 39 40 /* 41 * XXXfvdl change to use syscall/sysret. 42 */ 43 44 #include <machine/asm.h> 45 #include <sys/syscall.h> 46 47 #ifdef __STDC__ 48 #define SYSTRAP(x) movl $(SYS_ ## x),%eax; movq %rcx, %r10; syscall 49 #else 50 #define SYSTRAP(x) movl $(SYS_/**/x),%eax; movq %rcx, %r10; syscall 51 #endif 52 53 #define CERROR _C_LABEL(__cerror) 54 #define CURBRK _C_LABEL(__curbrk) 55 56 #define _SYSCALL_NOERROR(x,y) \ 57 ENTRY(x); \ 58 SYSTRAP(y) 59 60 #ifdef PIC 61 #define _SYSCALL(x,y) \ 62 .text; _ALIGN_TEXT; \ 63 2: mov PIC_GOT(CERROR), %rcx; \ 64 jmp *%rcx; \ 65 _SYSCALL_NOERROR(x,y); \ 66 jc 2b 67 #else 68 #define _SYSCALL(x,y) \ 69 .text; _ALIGN_TEXT; \ 70 2: jmp CERROR; \ 71 _SYSCALL_NOERROR(x,y); \ 72 jc 2b 73 #endif 74 75 #define SYSCALL_NOERROR(x) \ 76 _SYSCALL_NOERROR(x,x) 77 78 #define SYSCALL(x) \ 79 _SYSCALL(x,x) 80 81 #define PSEUDO_NOERROR(x,y) \ 82 _SYSCALL_NOERROR(x,y); \ 83 ret 84 85 #define PSEUDO(x,y) \ 86 _SYSCALL(x,y); \ 87 ret 88 89 #define RSYSCALL_NOERROR(x) \ 90 PSEUDO_NOERROR(x,x) 91 92 #define RSYSCALL(x) \ 93 PSEUDO(x,x) 94 95 #define WSYSCALL(weak,strong) \ 96 WEAK_ALIAS(weak,strong); \ 97 PSEUDO(strong,weak) 98 99 .globl CERROR 100