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")))
__aeabi_idiv0(int return_value)34 __aeabi_idiv0(int return_value) {
35 return return_value;
36 }
37
38 long long __attribute__((weak)) __attribute__((visibility("hidden")))
__aeabi_ldiv0(long long return_value)39 __aeabi_ldiv0(long long return_value) {
40 return return_value;
41 }
42 #endif
43
44