circuitpython/py/nlrsetjmp.c
Damien George 8a2347723e py: Move global variable nlr_top to one place, in a .c file.
This reduces dependency on assembler, and allows to consolidate global
variables in the future.
2015-01-01 21:47:58 +00:00

42 lines
1.5 KiB
C

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 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/nlr.h"
// this global variable is used for all nlr implementations
nlr_buf_t *nlr_top;
#if MICROPY_NLR_SETJMP
void nlr_setjmp_jump(void *val) {
nlr_buf_t *buf = nlr_top;
nlr_top = buf->prev;
buf->ret_val = val;
longjmp(buf->jmpbuf, 1);
}
#endif