diff options
Diffstat (limited to 'sys/arch/i386/stand/libsa/alloca.S')
-rw-r--r-- | sys/arch/i386/stand/libsa/alloca.S | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/sys/arch/i386/stand/libsa/alloca.S b/sys/arch/i386/stand/libsa/alloca.S index 13cd68c3918..e69de29bb2d 100644 --- a/sys/arch/i386/stand/libsa/alloca.S +++ b/sys/arch/i386/stand/libsa/alloca.S @@ -1,49 +0,0 @@ -/*- - * 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. - */ - -#include <machine/asm.h> - -/* like alloc, but automatic free in return */ - -ENTRY(alloca) - popl %edx /* pop return addr */ - popl %eax /* pop amount to allocate */ - movl %esp,%ecx - addl $3,%eax /* round up to next word */ - andl $-4,%eax - subl %eax,%esp - movl %esp,%eax /* base of newly allocated space */ - pushl 8(%ecx) /* copy possible saved registers */ - pushl 4(%ecx) - pushl 0(%ecx) - pushl %eax /* dummy to pop at callsite */ - jmp *%edx /* "return" */ |