mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 18:11:56 +00:00
114 lines
3.3 KiB
ArmAsm
114 lines
3.3 KiB
ArmAsm
|
/* libgcc1 routines for 68000 w/o floating-point hardware.
|
||
|
|
Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
This file is part of GNU CC.
|
||
|
|
|
||
|
|
GNU CC is free software; you can redistribute it and/or modify it
|
||
|
|
under the terms of the GNU General Public License as published by the
|
||
|
|
Free Software Foundation; either version 2, or (at your option) any
|
||
|
|
later version.
|
||
|
|
|
||
|
|
In addition to the permissions in the GNU General Public License, the
|
||
|
|
Free Software Foundation gives you unlimited permission to link the
|
||
|
|
compiled version of this file with other programs, and to distribute
|
||
|
|
those programs without any restriction coming from the use of this
|
||
|
|
file. (The General Public License restrictions do apply in other
|
||
|
|
respects; for example, they cover modification of the file, and
|
||
|
|
distribution when not linked into another program.)
|
||
|
|
|
||
|
|
This file is distributed in the hope that it will be useful, but
|
||
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; see the file COPYING. If not, write to
|
||
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
||
|
|
Boston, MA 02111-1307, USA. */
|
||
|
|
|
||
|
|
/* As a special exception, if you link this library with files
|
||
|
|
compiled with GCC to produce an executable, this does not cause
|
||
|
|
the resulting executable to be covered by the GNU General Public License.
|
||
|
|
This exception does not however invalidate any other reasons why
|
||
|
|
the executable file might be covered by the GNU General Public License. */
|
||
|
|
|
||
|
|
/* Use this one for any 680x0; assumes no floating point hardware.
|
||
|
|
The trailing " '" appearing on some lines is for ANSI preprocessors. Yuk.
|
||
|
|
Some of this code comes from MINIX, via the folks at ericsson.
|
||
|
|
D. V. Henkel-Wallace (gumby@cygnus.com) Fete Bastille, 1992
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* These are predefined by new versions of GNU cpp. */
|
||
|
|
|
||
|
|
#ifndef __USER_LABEL_PREFIX__
|
||
|
|
#define __USER_LABEL_PREFIX__ _
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef __REGISTER_PREFIX__
|
||
|
|
#define __REGISTER_PREFIX__
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef __IMMEDIATE_PREFIX__
|
||
|
|
#define __IMMEDIATE_PREFIX__ #
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* ANSI concatenation macros. */
|
||
|
|
|
||
|
|
#define CONCAT1(a, b) CONCAT2(a, b)
|
||
|
|
#define CONCAT2(a, b) a ## b
|
||
|
|
|
||
|
|
/* Use the right prefix for global labels. */
|
||
|
|
|
||
|
|
#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
|
||
|
|
|
||
|
|
/* Use the right prefix for registers. */
|
||
|
|
|
||
|
|
#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
|
||
|
|
|
||
|
|
/* Use the right prefix for immediate values. */
|
||
|
|
|
||
|
|
#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x)
|
||
|
|
|
||
|
|
#define d0 REG (d0)
|
||
|
|
#define d1 REG (d1)
|
||
|
|
#define d2 REG (d2)
|
||
|
|
#define d3 REG (d3)
|
||
|
|
#define d4 REG (d4)
|
||
|
|
#define d5 REG (d5)
|
||
|
|
#define d6 REG (d6)
|
||
|
|
#define d7 REG (d7)
|
||
|
|
#define a0 REG (a0)
|
||
|
|
#define a1 REG (a1)
|
||
|
|
#define a2 REG (a2)
|
||
|
|
#define a3 REG (a3)
|
||
|
|
#define a4 REG (a4)
|
||
|
|
#define a5 REG (a5)
|
||
|
|
#define a6 REG (a6)
|
||
|
|
#define fp REG (fp)
|
||
|
|
#define sp REG (sp)
|
||
|
|
|
||
|
|
.text
|
||
|
|
.proc
|
||
|
|
.globl SYM (__modsi3)
|
||
|
|
SYM (__modsi3):
|
||
|
|
movel sp@(8), d1 /* d1 = divisor */
|
||
|
|
movel sp@(4), d0 /* d0 = dividend */
|
||
|
|
movel d1, sp@-
|
||
|
|
movel d0, sp@-
|
||
|
|
jbsr SYM (__divsi3)
|
||
|
|
addql IMM (8), sp
|
||
|
|
movel sp@(8), d1 /* d1 = divisor */
|
||
|
|
#if !(defined(__mcf5200__) || defined(__mcoldfire__))
|
||
|
|
movel d1, sp@-
|
||
|
|
movel d0, sp@-
|
||
|
|
jbsr SYM (__mulsi3) /* d0 = (a/b)*b */
|
||
|
|
addql IMM (8), sp
|
||
|
|
#else
|
||
|
|
mulsl d1,d0
|
||
|
|
#endif
|
||
|
|
movel sp@(4), d1 /* d1 = dividend */
|
||
|
|
subl d0, d1 /* d1 = a - (a/b)*b */
|
||
|
|
movel d1, d0
|
||
|
|
rts
|
||
|
|
|