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/* Function to force register windows to the stack.
Copyright (C) 2005, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <bits/xtensa-config.h>
#ifdef __XTENSA_WINDOWED_ABI__
.text
.align 4
.literal_position
.global __window_spill
.type __window_spill, @function
__window_spill:
entry a1, 48
bbci.l a0, 31, .L4 /* branch if called with call4 */
bbsi.l a0, 30, .L12 /* branch if called with call12 */
/* Called with call8: touch register NUM_REGS-12 (4/20/52) */
.L8:
#if XCHAL_NUM_AREGS > 16
call12 1f
retw
.align 4
1: _entry a1, 48 /* touch NUM_REGS-24 (x/8/40) */
#if XCHAL_NUM_AREGS == 32
mov a8, a0
retw
#else
mov a12, a0
_entry a1, 48 /* touch NUM_REGS-36 (x/x/28) */
mov a12, a0
_entry a1, 48 /* touch NUM_REGS-48 (x/x/16) */
mov a12, a0
_entry a1, 16 /* touch NUM_REGS-60 (x/x/4) */
#endif
#endif
mov a4, a0
retw
/* Called with call4: touch register NUM_REGS-8 (8/24/56) */
.L4:
#if XCHAL_NUM_AREGS == 16
mov a8, a0
#else
call12 1f
retw
.align 4
1: _entry a1, 48 /* touch NUM_REGS-20 (x/12/44) */
mov a12, a0
#if XCHAL_NUM_AREGS > 32
_entry a1, 48 /* touch NUM_REGS-32 (x/x/32) */
mov a12, a0
_entry a1, 48 /* touch NUM_REGS-44 (x/x/20) */
mov a12, a0
_entry a1, 48 /* touch NUM_REGS-56 (x/x/8) */
mov a8, a0
#endif
#endif
retw
/* Called with call12: touch register NUM_REGS-16 (x/16/48) */
.L12:
#if XCHAL_NUM_AREGS > 16
call12 1f
retw
.align 4
1: _entry a1, 48 /* touch NUM_REGS-28 (x/4/36) */
#if XCHAL_NUM_AREGS == 32
mov a4, a0
#else
mov a12, a0
_entry a1, 48 /* touch NUM_REGS-40 (x/x/24) */
mov a12, a0
_entry a1, 48 /* touch NUM_REGS-52 (x/x/12) */
mov a12, a0
#endif
#endif
retw
#endif
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