1/*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2018 Damien P. George
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26
27    .syntax unified
28    .cpu cortex-m0
29    .thumb
30
31    .section .text
32    .align 2
33
34    .global gc_helper_get_regs_and_sp
35    .type gc_helper_get_regs_and_sp, %function
36
37@ uint gc_helper_get_regs_and_sp(r0=uint regs[10])
38gc_helper_get_regs_and_sp:
39    @ store registers into given array
40    str    r4, [r0, #0]
41    str    r5, [r0, #4]
42    str    r6, [r0, #8]
43    str    r7, [r0, #12]
44    mov    r1, r8
45    str    r1, [r0, #16]
46    mov    r1, r9
47    str    r1, [r0, #20]
48    mov    r1, r10
49    str    r1, [r0, #24]
50    mov    r1, r11
51    str    r1, [r0, #28]
52    mov    r1, r12
53    str    r1, [r0, #32]
54    mov    r1, r13
55    str    r1, [r0, #36]
56
57    @ return the sp
58    mov    r0, sp
59    bx     lr
60
61    .size gc_helper_get_regs_and_sp, .-gc_helper_get_regs_and_sp
62