circuitpython/py/stackctrl.c
Damien George f1c6cb7725 py/stackctrl: Add gcc pragmas to ignore dangling-pointer warning.
This warning became apparent in gcc 13.

Signed-off-by: Damien George <damien@micropython.org>
2023-05-04 10:08:12 +10:00

65 lines
2.0 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Paul Sokolovsky
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/runtime.h"
#include "py/stackctrl.h"
void mp_stack_ctrl_init(void) {
#if __GNUC__ >= 13
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdangling-pointer"
#endif
volatile int stack_dummy;
MP_STATE_THREAD(stack_top) = (char *)&stack_dummy;
#if __GNUC__ >= 13
#pragma GCC diagnostic pop
#endif
}
void mp_stack_set_top(void *top) {
MP_STATE_THREAD(stack_top) = top;
}
mp_uint_t mp_stack_usage(void) {
// Assumes descending stack
volatile int stack_dummy;
return MP_STATE_THREAD(stack_top) - (char *)&stack_dummy;
}
#if MICROPY_STACK_CHECK
void mp_stack_set_limit(mp_uint_t limit) {
MP_STATE_THREAD(stack_limit) = limit;
}
void mp_stack_check(void) {
if (mp_stack_usage() >= MP_STATE_THREAD(stack_limit)) {
mp_raise_recursion_depth();
}
}
#endif // MICROPY_STACK_CHECK