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 28 extern unsigned char declaration; 29 30 #if defined(__ARM_EABI__) 31 AEABI_RTABI int __attribute__((weak)) __attribute__((visibility("hidden"))) 32 __aeabi_idiv0(int return_value) { 33 return return_value; 34 } 35 36 AEABI_RTABI long long __attribute__((weak)) 37 __attribute__((visibility("hidden"))) __aeabi_ldiv0(long long return_value) { 38 return return_value; 39 } 40 #endif 41