Annotation of sys/lib/libkern/arch/sparc/saveregs.S, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: saveregs.S,v 1.3 2003/06/02 23:28:09 millert Exp $ */
! 2: /* $NetBSD: saveregs.S,v 1.2 1994/10/26 06:40:07 cgd Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1992, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * This software was developed by the Computer Systems Engineering group
! 9: * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
! 10: * contributed to Berkeley.
! 11: *
! 12: * Redistribution and use in source and binary forms, with or without
! 13: * modification, are permitted provided that the following conditions
! 14: * are met:
! 15: * 1. Redistributions of source code must retain the above copyright
! 16: * notice, this list of conditions and the following disclaimer.
! 17: * 2. Redistributions in binary form must reproduce the above copyright
! 18: * notice, this list of conditions and the following disclaimer in the
! 19: * documentation and/or other materials provided with the distribution.
! 20: * 3. Neither the name of the University nor the names of its contributors
! 21: * may be used to endorse or promote products derived from this software
! 22: * without specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 34: * SUCH DAMAGE.
! 35: *
! 36: * Header: saveregs.s,v 1.1 91/07/06 17:22:33 torek Exp
! 37: */
! 38:
! 39: /*
! 40: * Save register arguments in caller's `arg dump' area, so that
! 41: * stdarg functions work.
! 42: *
! 43: * This really should be done with a pointer to the arg dump area;
! 44: * our caller should allocate that area, not our caller's caller.
! 45: * But then, they did not let me invent the calling sequence....
! 46: *
! 47: * We assume the caller has executed a `save' instruction.
! 48: */
! 49: #include "DEFS.h"
! 50:
! 51: ENTRY(__builtin_saveregs)
! 52: st %i0, [%fp + 0x44] ! fr->fr_argd[0]
! 53: st %i1, [%fp + 0x48] ! fr->fr_argd[1]
! 54: st %i2, [%fp + 0x4c] ! fr->fr_argd[2]
! 55: st %i3, [%fp + 0x50] ! fr->fr_argd[3]
! 56: st %i4, [%fp + 0x54] ! fr->fr_argd[4]
! 57: retl
! 58: st %i5, [%fp + 0x58] ! fr->fr_argd[5]
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