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Diffstat (limited to 'lib/libc/arch/powerpc64/DEFS.h')
| -rw-r--r-- | lib/libc/arch/powerpc64/DEFS.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/lib/libc/arch/powerpc64/DEFS.h b/lib/libc/arch/powerpc64/DEFS.h new file mode 100644 index 00000000000..f6f20da0936 --- /dev/null +++ b/lib/libc/arch/powerpc64/DEFS.h @@ -0,0 +1,69 @@ +/* $OpenBSD: DEFS.h,v 1.1 2020/06/25 01:59:27 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 <machine/asm.h> + +/* + * 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 + * END_BUILTIN(x) If compiling with clang, then just END() and + * mark it .protected, else be like END_STRONG(); + * for clang builtins like memcpy + */ +#define END_STRONG(x) END(x); _HIDDEN_FALIAS(x,x); END(_HIDDEN(x)) +#define END_WEAK(x) END_STRONG(x); .weak x + +#ifdef __clang__ +#define END_BUILTIN(x) END(x); .protected x +#else +#define END_BUILTIN(x) END_STRONG(x) +#endif |