1 /* Function to force register windows to the stack.
2 Copyright (C) 2005, 2007 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
19 #include <bits/xtensa-config.h>
24 .global __window_spill
25 .type __window_spill, @function
28 bbci.l a0, 31, .L4 /* branch if called with call4 */
29 bbsi.l a0, 30, .L12 /* branch if called with call12 */
31 /* Called with call8: touch register NUM_REGS-12 (4/20/52) */
33 #if XCHAL_NUM_AREGS > 16
38 1: _entry a1, 48 /* touch NUM_REGS-24 (x/8/40) */
40 #if XCHAL_NUM_AREGS == 32
45 _entry a1, 48 /* touch NUM_REGS-36 (x/x/28) */
47 _entry a1, 48 /* touch NUM_REGS-48 (x/x/16) */
49 _entry a1, 16 /* touch NUM_REGS-60 (x/x/4) */
55 /* Called with call4: touch register NUM_REGS-8 (8/24/56) */
57 #if XCHAL_NUM_AREGS == 16
64 1: _entry a1, 48 /* touch NUM_REGS-20 (x/12/44) */
66 #if XCHAL_NUM_AREGS > 32
67 _entry a1, 48 /* touch NUM_REGS-32 (x/x/32) */
69 _entry a1, 48 /* touch NUM_REGS-44 (x/x/20) */
71 _entry a1, 48 /* touch NUM_REGS-56 (x/x/8) */
77 /* Called with call12: touch register NUM_REGS-16 (x/16/48) */
79 #if XCHAL_NUM_AREGS > 16
84 1: _entry a1, 48 /* touch NUM_REGS-28 (x/4/36) */
85 #if XCHAL_NUM_AREGS == 32
89 _entry a1, 48 /* touch NUM_REGS-40 (x/x/24) */
91 _entry a1, 48 /* touch NUM_REGS-52 (x/x/12) */