minix/lib/nbsd_libc/arch/x86_64/gen/alloca.S
Gianluca Guida b6cbf7203b Import unmodified NetBSD libc in trunk
This patch imports the unmodified current version of NetBSD libc.
The NetBSD includes are in /nbsd_include, while the libc code itself is 
split between lib/nbsd_libc and common/lib/libc.
2011-02-14 19:36:03 +00:00

16 lines
327 B
ArmAsm

/* $NetBSD: alloca.S,v 1.1 2001/06/19 00:25:02 fvdl Exp $ */
#include <machine/asm.h>
#if defined(LIBC_SCCS)
RCSID("$NetBSD: alloca.S,v 1.1 2001/06/19 00:25:02 fvdl Exp $")
#endif
ENTRY(alloca)
popq %rdx
movq %rsp,%rcx
addq $15,%rdi /* round up to 16 bytes */
andq $~15,%rdi
subq %rdi,%rsp
movq %rsp,%rax
jmp *%rdx