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007f127a61
Assuming proper C99 language support, we can select "the int type as big as a pointer" (most of the time) or "the 64-bit int type" (nanboxing with REPR_D), and then define everything else automatically. This simplifies port configuration files. And the types can still be overridden if needed. Signed-off-by: Jeff Epler <jepler@unpythonic.net>
109 lines
3.7 KiB
C
109 lines
3.7 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 Josef Gajdusek
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* Copyright (c) 2015 Paul Sokolovsky
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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mp_obj_t mp_call_function_1_protected(mp_obj_t fun, mp_obj_t arg) {
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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mp_obj_t ret = mp_call_function_1(fun, arg);
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nlr_pop();
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return ret;
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} else {
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mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
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return MP_OBJ_NULL;
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}
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}
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mp_obj_t mp_call_function_2_protected(mp_obj_t fun, mp_obj_t arg1, mp_obj_t arg2) {
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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mp_obj_t ret = mp_call_function_2(fun, arg1, arg2);
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nlr_pop();
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return ret;
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} else {
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mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
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return MP_OBJ_NULL;
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}
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}
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#if !MICROPY_USE_GCC_MUL_OVERFLOW_INTRINSIC
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bool mp_mul_ll_overflow(long long int x, long long int y, long long int *res) {
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bool overflow;
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// Check for multiply overflow; see CERT INT32-C
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if (x > 0) { // x is positive
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if (y > 0) { // x and y are positive
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overflow = (x > (LLONG_MAX / y));
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} else { // x positive, y nonpositive
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overflow = (y < (LLONG_MIN / x));
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} // x positive, y nonpositive
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} else { // x is nonpositive
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if (y > 0) { // x is nonpositive, y is positive
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overflow = (x < (LLONG_MIN / y));
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} else { // x and y are nonpositive
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overflow = (x != 0 && y < (LLONG_MAX / x));
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} // End if x and y are nonpositive
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} // End if x is nonpositive
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if (!overflow) {
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*res = x * y;
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}
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return overflow;
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}
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bool mp_mul_mp_int_t_overflow(mp_int_t x, mp_int_t y, mp_int_t *res) {
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// Check for multiply overflow; see CERT INT32-C
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if (x > 0) { // x is positive
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if (y > 0) { // x and y are positive
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if (x > (MP_INT_MAX / y)) {
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return true;
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}
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} else { // x positive, y nonpositive
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if (y < (MP_INT_MIN / x)) {
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return true;
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}
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} // x positive, y nonpositive
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} else { // x is nonpositive
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if (y > 0) { // x is nonpositive, y is positive
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if (x < (MP_INT_MIN / y)) {
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return true;
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}
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} else { // x and y are nonpositive
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if (x != 0 && y < (MP_INT_MAX / x)) {
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return true;
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}
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} // End if x and y are nonpositive
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} // End if x is nonpositive
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// Result doesn't overflow
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*res = x * y;
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return false;
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}
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#endif
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