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Diffstat (limited to 'src/kash/machdep.h')
| -rw-r--r-- | src/kash/machdep.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/kash/machdep.h b/src/kash/machdep.h new file mode 100644 index 0000000..c61e7be --- /dev/null +++ b/src/kash/machdep.h @@ -0,0 +1,56 @@ +/* $NetBSD: machdep.h,v 1.11 2003/08/07 09:05:33 agc Exp $ */ + +/*- + * Copyright (c) 1991, 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * 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. + * + * @(#)machdep.h 8.2 (Berkeley) 5/4/95 + */ + +/* + * Most machines require the value returned from malloc to be aligned + * in some way. The following macro will get this right on many machines. + */ + +/* For the purposes of the allocation stack(s), this is nonsensical given + that struct stack_block does not align the 'space' member accordingly. + That member will be aligned according to the pointer size, so we + should do the same here and not mix in any 'double' nonsense: */ +#if 0 +#define SHELL_SIZE (sizeof(union {int i; char *cp; double d; }) - 1) +#else +#define SHELL_SIZE (sizeof(void *) - 1) +#endif + +/* + * It appears that grabstackstr() will barf with such alignments + * because stalloc() will return a string allocated in a new stackblock. + */ +#define SHELL_ALIGN(nbytes) (((nbytes) + SHELL_SIZE) & ~SHELL_SIZE) |