From d95db1d047ce6217b7fbb442412c701eed7c58bd Mon Sep 17 00:00:00 2001 From: drahn Date: Thu, 29 Apr 2021 18:39:53 +0000 Subject: [PATCH] riscv64 libc asm defines, copied from aarch64. --- lib/libc/arch/riscv64/DEFS.h | 60 ++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 lib/libc/arch/riscv64/DEFS.h diff --git a/lib/libc/arch/riscv64/DEFS.h b/lib/libc/arch/riscv64/DEFS.h new file mode 100644 index 00000000000..90e5eec2a4d --- /dev/null +++ b/lib/libc/arch/riscv64/DEFS.h @@ -0,0 +1,60 @@ +/* $OpenBSD: DEFS.h,v 1.1 2021/04/29 18:39:53 drahn Exp $ */ +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * William Jolitz. + * + * 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. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. + * + * from: @(#)SYS.h 5.5 (Berkeley) 5/7/91 + * $NetBSD: SYS.h,v 1.5 2002/06/03 18:30:32 fvdl Exp $ + */ + +#include + +/* + * We define a hidden alias with the prefix "_libc_" for each global symbol + * that may be used internally. By referencing _libc_x instead of x, other + * parts of libc prevent overriding by the application and avoid unnecessary + * relocations. + */ +#define _HIDDEN(x) _libc_##x +#define _HIDDEN_ALIAS(x,y) \ + STRONG_ALIAS(_HIDDEN(x),y); \ + .hidden _HIDDEN(x) +#define _HIDDEN_FALIAS(x,y) \ + _HIDDEN_ALIAS(x,y); \ + .type _HIDDEN(x),@function + +/* + * For functions implemented in ASM that aren't syscalls. + * END_STRONG(x) Like DEF_STRONG() in C; for standard/reserved C names + * END_WEAK(x) Like DEF_WEAK() in C; for non-ISO C names + */ +#define END_STRONG(x) END(x); _HIDDEN_FALIAS(x,x); END(_HIDDEN(x)) +#define END_WEAK(x) END_STRONG(x); .weak x + -- 2.20.1