1 /*
2 * This file is part of the MicroPython project, http://micropython.org/
3 *
4 * The MIT License (MIT)
5 *
6 * Copyright (c) 2013, 2014 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 #include <stdio.h>
28
29 #include "py/mpstate.h"
30 #include "py/gc.h"
31 #include "shared/runtime/gchelper.h"
32
33 // Modified bt HaaS begin
34 #if !MICROPY_PY_HAAS_SPECIFIC
35 // Modified bt HaaS end
36 #if MICROPY_ENABLE_GC
37
38 // provided by gchelper_*.s
39 uintptr_t gc_helper_get_regs_and_sp(uintptr_t *regs);
40
gc_helper_collect_regs_and_stack(void)41 MP_NOINLINE void gc_helper_collect_regs_and_stack(void) {
42 // get the registers and the sp
43 gc_helper_regs_t regs;
44 uintptr_t sp = gc_helper_get_regs_and_sp(regs);
45
46 // trace the stack, including the registers (since they live on the stack in this function)
47 gc_collect_root((void **)sp, ((uint32_t)MP_STATE_THREAD(stack_top) - sp) / sizeof(uint32_t));
48 }
49
50 #endif
51
52 // Modified bt HaaS begin
53 #endif
54 //// Modified bt HaaS end
55