1/* libgcc1 routines for 68000 w/o floating-point hardware. 2 Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc. 3 4This file is part of GNU CC. 5 6GNU CC is free software; you can redistribute it and/or modify it 7under the terms of the GNU General Public License as published by the 8Free Software Foundation; either version 2, or (at your option) any 9later version. 10 11In addition to the permissions in the GNU General Public License, the 12Free Software Foundation gives you unlimited permission to link the 13compiled version of this file with other programs, and to distribute 14those programs without any restriction coming from the use of this 15file. (The General Public License restrictions do apply in other 16respects; for example, they cover modification of the file, and 17distribution when not linked into another program.) 18 19This file is distributed in the hope that it will be useful, but 20WITHOUT ANY WARRANTY; without even the implied warranty of 21MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22General Public License for more details. 23 24You should have received a copy of the GNU General Public License 25along with this program; see the file COPYING. If not, write to 26the Free Software Foundation, 59 Temple Place - Suite 330, 27Boston, MA 02111-1307, USA. */ 28 29/* As a special exception, if you link this library with files 30 compiled with GCC to produce an executable, this does not cause 31 the resulting executable to be covered by the GNU General Public License. 32 This exception does not however invalidate any other reasons why 33 the executable file might be covered by the GNU General Public License. */ 34 35/* Use this one for any 680x0; assumes no floating point hardware. 36 The trailing " '" appearing on some lines is for ANSI preprocessors. Yuk. 37 Some of this code comes from MINIX, via the folks at ericsson. 38 D. V. Henkel-Wallace (gumby@cygnus.com) Fete Bastille, 1992 39*/ 40 41/* These are predefined by new versions of GNU cpp. */ 42 43#ifndef __USER_LABEL_PREFIX__ 44#define __USER_LABEL_PREFIX__ _ 45#endif 46 47#ifndef __REGISTER_PREFIX__ 48#define __REGISTER_PREFIX__ 49#endif 50 51#ifndef __IMMEDIATE_PREFIX__ 52#define __IMMEDIATE_PREFIX__ # 53#endif 54 55/* ANSI concatenation macros. */ 56 57#define CONCAT1(a, b) CONCAT2(a, b) 58#define CONCAT2(a, b) a ## b 59 60/* Use the right prefix for global labels. */ 61 62#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x) 63 64/* Use the right prefix for registers. */ 65 66#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x) 67 68/* Use the right prefix for immediate values. */ 69 70#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x) 71 72#define d0 REG (d0) 73#define d1 REG (d1) 74#define d2 REG (d2) 75#define d3 REG (d3) 76#define d4 REG (d4) 77#define d5 REG (d5) 78#define d6 REG (d6) 79#define d7 REG (d7) 80#define a0 REG (a0) 81#define a1 REG (a1) 82#define a2 REG (a2) 83#define a3 REG (a3) 84#define a4 REG (a4) 85#define a5 REG (a5) 86#define a6 REG (a6) 87#define fp REG (fp) 88#define sp REG (sp) 89 90 .text 91 .proc 92 .globl SYM (__modsi3) 93SYM (__modsi3): 94 movel sp@(8), d1 /* d1 = divisor */ 95 movel sp@(4), d0 /* d0 = dividend */ 96 movel d1, sp@- 97 movel d0, sp@- 98 jbsr SYM (__divsi3) 99 addql IMM (8), sp 100 movel sp@(8), d1 /* d1 = divisor */ 101#if !(defined(__mcf5200__) || defined(__mcoldfire__)) 102 movel d1, sp@- 103 movel d0, sp@- 104 jbsr SYM (__mulsi3) /* d0 = (a/b)*b */ 105 addql IMM (8), sp 106#else 107 mulsl d1,d0 108#endif 109 movel sp@(4), d1 /* d1 = dividend */ 110 subl d0, d1 /* d1 = a - (a/b)*b */ 111 movel d1, d0 112 rts 113 114