kopia lustrzana https://github.com/micropython/micropython
52 wiersze
2.0 KiB
C
52 wiersze
2.0 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013-2017 Damien P. George
|
|
*
|
|
* 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/mpstate.h"
|
|
|
|
#if !MICROPY_NLR_SETJMP
|
|
// When not using setjmp, nlr_push_tail is called from inline asm so needs special care
|
|
#if MICROPY_NLR_X86 && MICROPY_NLR_OS_WINDOWS
|
|
// On these 32-bit platforms make sure nlr_push_tail doesn't have a leading underscore
|
|
unsigned int nlr_push_tail(nlr_buf_t *nlr) asm("nlr_push_tail");
|
|
#else
|
|
// LTO can't see inside inline asm functions so explicitly mark nlr_push_tail as used
|
|
__attribute__((used)) unsigned int nlr_push_tail(nlr_buf_t *nlr);
|
|
#endif
|
|
#endif
|
|
|
|
unsigned int nlr_push_tail(nlr_buf_t *nlr) {
|
|
nlr_buf_t **top = &MP_STATE_THREAD(nlr_top);
|
|
nlr->prev = *top;
|
|
MP_NLR_SAVE_PYSTACK(nlr);
|
|
*top = nlr;
|
|
return 0; // normal return
|
|
}
|
|
|
|
void nlr_pop(void) {
|
|
nlr_buf_t **top = &MP_STATE_THREAD(nlr_top);
|
|
*top = (*top)->prev;
|
|
}
|