/* * Copyright (c) 1988 Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Computer Consoles Inc. * * %sccs.include.redist.c% */ #if defined(LIBC_SCCS) && !defined(lint) .asciz "@(#)alloca.s 5.1 (Berkeley) 01/30/91" #endif /* LIBC_SCCS and not lint */ /* like alloc, but automatic automatic free in return */ #include "DEFS.h" ENTRY(alloca, 0) moval (sp),r0 # current sp subl2 4(fp),r0 # allocation size andl2 $0xfffffffc,r0 # allignment movl -8(fp),r1 # old pc movl (fp),fp # old fp addl2 $4*4,r0 # reuse space of mscp movl r0,sp # new sp jmp (r1) # funny return