diff --git a/lib/libc/aarch64/SYS.h b/lib/libc/aarch64/SYS.h index af7f0200a0c7..07d14ab1bb44 100644 --- a/lib/libc/aarch64/SYS.h +++ b/lib/libc/aarch64/SYS.h @@ -1,60 +1,60 @@ /*- * Copyright (c) 2014 Andrew Turner * Copyright (c) 2015 The FreeBSD Foundation * * This software was developed by Andrew Turner under * sponsorship from the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #define _SYSCALL(name) \ mov x8, SYS_ ## name; \ svc 0 /* * Conditional jumps can only go up to one megabyte in either * direction, and cerror can be located anywhere, so we have * to jump around to use more capable unconditional branch * instruction. */ -#define PSEUDO(name) \ -ENTRY(__sys_##name); \ - WEAK_REFERENCE(__sys_##name, _##name); \ +#define _SYSCALL_BODY(name) \ _SYSCALL(name); \ b.cs 1f; \ ret; \ -1: b cerror; \ +1: b cerror + +#define PSEUDO(name) \ +ENTRY(__sys_##name); \ + WEAK_REFERENCE(__sys_##name, _##name); \ + _SYSCALL_BODY(name); \ END(__sys_##name) #define RSYSCALL(name) \ ENTRY(__sys_##name); \ WEAK_REFERENCE(__sys_##name, name); \ WEAK_REFERENCE(__sys_##name, _##name); \ - _SYSCALL(name); \ - b.cs 1f; \ - ret; \ -1: b cerror; \ + _SYSCALL_BODY(name); \ END(__sys_##name)