lib2divSI.c revision 1.1.1.9
1/* SI mode divide routines for libgcc for MSP430 2 Copyright (C) 2012-2022 Free Software Foundation, Inc. 3 Contributed by Red Hat. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 15 License for more details. 16 17 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26typedef int sint32_type __attribute__ ((mode (SI))); 27typedef unsigned int uint32_type __attribute__ ((mode (SI))); 28typedef int sint16_type __attribute__ ((mode (HI))); 29typedef unsigned int uint16_type __attribute__ ((mode (HI))); 30typedef int sint08_type __attribute__ ((mode (QI))); 31typedef unsigned int uint08_type __attribute__ ((mode (QI))); 32typedef int word_type __attribute__ ((mode (__word__))); 33 34#define C3B(a,b,c) a##b##c 35#define C3(a,b,c) C3B(a,b,c) 36 37#define UINT_TYPE uint32_type 38#define SINT_TYPE sint32_type 39#define BITS_MINUS_1 31 40#define NAME_MODE si 41 42#include "msp430-divmod.h" 43 44/* ---------------------------------------------------------------------*/ 45 46/* There is a typo in the MSP430 ABI document. It calls the unsigned 47 long integer division function __mspabi_divlu when it should be 48 __mspabi_divul. Likewise the unsigned long long integer division 49 function is called __mspabi_divllu when it should be __mspabi_divull. 50 51 Earlier versions of this toolchain used generate the ABI compliant 52 names, so in order to support object files built with those tools 53 we provide stub functions that call the correct routines. */ 54 55asm (".global __mspabi_divlu\n\ 56 .set __mspabi_divlu, __mspabi_divul"); 57 58/* We cannot use the same trick for __mspabi_divllu as that is defined 59 in a different file. Instead we create a stub here. The cost of 60 executing the branch instruction will be trivial compared to the 61 cost of executing a long long division. */ 62 63#ifdef __MSP430X_LARGE__ 64asm (".global __mspabi_divllu\n\ 65 __mspabi_divllu:\n\ 66 BRA #__mspabi_divull"); 67#else 68asm (".global __mspabi_divllu\n\ 69 __mspabi_divllu:\n\ 70 BR #__mspabi_divull"); 71#endif 72