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/* This file contains the vector save and restore routines.
*
* Copyright (C) 2004-2019 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.). */
/* With some assemblers, we need the correct machine directive to get the
right CPU type / subtype in the file header. */
#if __ppc64__
.machine ppc64
#else
.machine ppc7400
#endif
.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
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