1//===-- aeabi_div0.c - ARM Runtime ABI support routines for compiler-rt ---===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9// This file implements the division by zero helper routines as specified by the 10// Run-time ABI for the ARM Architecture. 11// 12//===----------------------------------------------------------------------===// 13 14// RTABI 4.3.2 - Division by zero 15// 16// The *div0 functions: 17// - Return the value passed to them as a parameter 18// - Or, return a fixed value defined by the execution environment (such as 0) 19// - Or, raise a signal (often SIGFPE) or throw an exception, and do not return 20// 21// An application may provide its own implementations of the *div0 functions to 22// for a particular behaviour from the *div and *divmod functions called out of 23// line. 24 25#include "../int_lib.h" 26 27// provide an unused declaration to pacify pendantic compilation 28extern unsigned char declaration; 29 30#if defined(__ARM_EABI__) 31AEABI_RTABI int __attribute__((weak)) __attribute__((visibility("hidden"))) 32__aeabi_idiv0(int return_value) { 33 return return_value; 34} 35 36AEABI_RTABI long long __attribute__((weak)) 37__attribute__((visibility("hidden"))) __aeabi_ldiv0(long long return_value) { 38 return return_value; 39} 40#endif 41