1 /* ===-- aeabi_div0.c - ARM Runtime ABI support routines for compiler-rt ---=== 2 * 3 * The LLVM Compiler Infrastructure 4 * 5 * This file is dual licensed under the MIT and the University of Illinois Open 6 * Source Licenses. See LICENSE.TXT for details. 7 * 8 * ===----------------------------------------------------------------------=== 9 * 10 * This file implements the division by zero helper routines as specified by the 11 * Run-time ABI for the ARM Architecture. 12 * 13 * ===----------------------------------------------------------------------=== 14 */ 15 16 /* 17 * RTABI 4.3.2 - Division by zero 18 * 19 * The *div0 functions: 20 * - Return the value passed to them as a parameter 21 * - Or, return a fixed value defined by the execution environment (such as 0) 22 * - Or, raise a signal (often SIGFPE) or throw an exception, and do not return 23 * 24 * An application may provide its own implementations of the *div0 functions to 25 * for a particular behaviour from the *div and *divmod functions called out of 26 * line. 27 */ 28 29 /* provide an unused declaration to pacify pendantic compilation */ 30 extern unsigned char declaration; 31 32 #if defined(__ARM_EABI__) 33 int __attribute__((weak)) __attribute__((visibility("hidden"))) 34 __aeabi_idiv0(int return_value) { 35 return return_value; 36 } 37 38 long long __attribute__((weak)) __attribute__((visibility("hidden"))) 39 __aeabi_ldiv0(long long return_value) { 40 return return_value; 41 } 42 #endif 43 44
