Subversion Repositories openrisc_2011-10-31

/*  This file contains the vector save and restore routines.
 *
 *   Copyright (C) 2004, 2009 Free Software Foundation, Inc.
 * 
 * This file is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 3, or (at your option) any
 * later version.
 * 
 * This file is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * Under Section 7 of GPL version 3, you are granted additional
 * permissions described in the GCC Runtime Library Exception, version
 * 3.1, as published by the Free Software Foundation.
 *
 * You should have received a copy of the GNU General Public License and
 * a copy of the GCC Runtime Library Exception along with this program;
 * see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 * <http://www.gnu.org/licenses/>.
 */ 

/* Vector save/restore routines for Darwin.  Note that each vector
   save/restore requires 2 instructions (8 bytes.)

   THE SAVE AND RESTORE ROUTINES CAN HAVE ONLY ONE GLOBALLY VISIBLE
   ENTRY POINT - callers have to jump to "saveFP+60" to save f29..f31,
   for example.  For FP reg saves/restores, it takes one instruction
   (4 bytes) to do the operation; for Vector regs, 2 instructions are
   required (8 bytes.).   */

        .machine ppc7400
.text
        .align 2

.private_extern saveVEC
saveVEC:
        li r11,-192
        stvx v20,r11,r0
        li r11,-176
        stvx v21,r11,r0
        li r11,-160
        stvx v22,r11,r0
        li r11,-144
        stvx v23,r11,r0
        li r11,-128
        stvx v24,r11,r0
        li r11,-112
        stvx v25,r11,r0
        li r11,-96
        stvx v26,r11,r0
        li r11,-80
        stvx v27,r11,r0
        li r11,-64
        stvx v28,r11,r0
        li r11,-48
        stvx v29,r11,r0
        li r11,-32
        stvx v30,r11,r0
        li r11,-16
        stvx v31,r11,r0
        blr

.private_extern restVEC
restVEC:
        li r11,-192
        lvx v20,r11,r0
        li r11,-176
        lvx v21,r11,r0
        li r11,-160
        lvx v22,r11,r0
        li r11,-144
        lvx v23,r11,r0
        li r11,-128
        lvx v24,r11,r0
        li r11,-112
        lvx v25,r11,r0
        li r11,-96
        lvx v26,r11,r0
        li r11,-80
        lvx v27,r11,r0
        li r11,-64
        lvx v28,r11,r0
        li r11,-48
        lvx v29,r11,r0
        li r11,-32
        lvx v30,r11,r0
        li r11,-16
        lvx v31,r11,r0
        blr

/* saveVEC_vr11 -- as saveVEC but VRsave is returned in R11.  */

.private_extern saveVEC_vr11
saveVEC_vr11:
        li r11,-192
        stvx v20,r11,r0
        li r11,-176
        stvx v21,r11,r0
        li r11,-160
        stvx v22,r11,r0
        li r11,-144
        stvx v23,r11,r0
        li r11,-128
        stvx v24,r11,r0
        li r11,-112
        stvx v25,r11,r0
        li r11,-96
        stvx v26,r11,r0
        li r11,-80
        stvx v27,r11,r0
        li r11,-64
        stvx v28,r11,r0
        li r11,-48
        stvx v29,r11,r0
        li r11,-32
        stvx v30,r11,r0
        li r11,-16
        stvx v31,r11,r0
        mfspr r11,VRsave
        blr

/* As restVec, but the original VRsave value passed in R10.  */

.private_extern restVEC_vr10
restVEC_vr10:
        li r11,-192
        lvx v20,r11,r0
        li r11,-176
        lvx v21,r11,r0
        li r11,-160
        lvx v22,r11,r0
        li r11,-144
        lvx v23,r11,r0
        li r11,-128
        lvx v24,r11,r0
        li r11,-112
        lvx v25,r11,r0
        li r11,-96
        lvx v26,r11,r0
        li r11,-80
        lvx v27,r11,r0
        li r11,-64
        lvx v28,r11,r0
        li r11,-48
        lvx v29,r11,r0
        li r11,-32
        lvx v30,r11,r0
        li r11,-16
        lvx v31,r11,r0
                                /* restore VRsave from R10.  */
        mtspr VRsave,r10
        blr