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Diffstat (limited to 'py/nlr.c')
-rw-r--r-- | py/nlr.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/py/nlr.c b/py/nlr.c deleted file mode 100644 index e4d6d10c0..000000000 --- a/py/nlr.c +++ /dev/null @@ -1,74 +0,0 @@ -/* - * 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" - -// Helper macros to save/restore the pystack state -#if MICROPY_ENABLE_PYSTACK -#define MP_NLR_SAVE_PYSTACK(nlr_buf) (nlr_buf)->pystack = MP_STATE_THREAD(pystack_cur) -#define MP_NLR_RESTORE_PYSTACK(nlr_buf) MP_STATE_THREAD(pystack_cur) = (nlr_buf)->pystack -#else -#define MP_NLR_SAVE_PYSTACK(nlr_buf) (void)nlr_buf -#define MP_NLR_RESTORE_PYSTACK(nlr_buf) (void)nlr_buf -#endif - -#if !MICROPY_NLR_SETJMP -// When not using setjmp, nlr_push_tail is called from inline asm so needs special care -#if MICROPY_NLR_X86 && (defined(_WIN32) || defined(__CYGWIN__)) -// 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; -} - -NORETURN void nlr_jump(void *val) { - nlr_buf_t **top_ptr = &MP_STATE_THREAD(nlr_top); - nlr_buf_t *top = *top_ptr; - if (top == NULL) { - nlr_jump_fail(val); - } - - top->ret_val = val; - MP_NLR_RESTORE_PYSTACK(top); - *top_ptr = top->prev; - - nlr_jump_tail(top); -} |