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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-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements the division by zero helper routines as specified by the10// Run-time ABI for the ARM Architecture.11//12//===----------------------------------------------------------------------===//13 14// RTABI 4.3.2 - Division by zero15//16// The *div0 functions:17// - Return the value passed to them as a parameter18// - 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 return20//21// An application may provide its own implementations of the *div0 functions to22// for a particular behaviour from the *div and *divmod functions called out of23// line.24 25#include "../int_lib.h"26 27// provide an unused declaration to pacify pendantic compilation28extern 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#endif41