66d857b08b
There is a lot of common code that could be shared between the m68k and m68knommu arch branches. It makes sense to merge the two branches into a single directory structure so that we can more easily share that common code. This is a brute force merge, based on a script from Stephen King <sfking@fdwdc.com>, which was originally written by Arnd Bergmann <arnd@arndb.de>. > The script was inspired by the script Sam Ravnborg used to merge the > includes from m68knommu. For those files common to both arches but > differing in content, the m68k version of the file is renamed to > <file>_mm.<ext> and the m68knommu version of the file is moved into the > corresponding m68k directory and renamed <file>_no.<ext> and a small > wrapper file <file>.<ext> is used to select between the two version. Files > that are common to both but don't differ are removed from the m68knommu > tree and files and directories that are unique to the m68knommu tree are > moved to the m68k tree. Finally, the arch/m68knommu tree is removed. > > To select between the the versions of the files, the wrapper uses > > #ifdef CONFIG_MMU > #include <file>_mm.<ext> > #else > #include <file>_no.<ext> > #endif On top of this file merge I have done a simplistic merge of m68k and m68knommu Kconfig, which primarily attempts to keep existing options and menus in place. Other than a handful of options being moved it produces identical .config outputs on m68k and m68knommu targets I tested it on. With this in place there is now quite a bit of scope for merge cleanups in future patches. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
125 lines
3.5 KiB
ArmAsm
125 lines
3.5 KiB
ArmAsm
/* libgcc1 routines for 68000 w/o floating-point hardware.
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Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file with other programs, and to distribute
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those programs without any restriction coming from the use of this
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file. (The General Public License restrictions do apply in other
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respects; for example, they cover modification of the file, and
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distribution when not linked into another program.)
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* As a special exception, if you link this library with files
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compiled with GCC to produce an executable, this does not cause
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the resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why
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the executable file might be covered by the GNU General Public License. */
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/* Use this one for any 680x0; assumes no floating point hardware.
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The trailing " '" appearing on some lines is for ANSI preprocessors. Yuk.
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Some of this code comes from MINIX, via the folks at ericsson.
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D. V. Henkel-Wallace (gumby@cygnus.com) Fete Bastille, 1992
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*/
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/* These are predefined by new versions of GNU cpp. */
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#ifndef __USER_LABEL_PREFIX__
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#define __USER_LABEL_PREFIX__ _
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#endif
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#ifndef __REGISTER_PREFIX__
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#define __REGISTER_PREFIX__
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#endif
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#ifndef __IMMEDIATE_PREFIX__
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#define __IMMEDIATE_PREFIX__ #
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#endif
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/* ANSI concatenation macros. */
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#define CONCAT1(a, b) CONCAT2(a, b)
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#define CONCAT2(a, b) a ## b
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/* Use the right prefix for global labels. */
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#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
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/* Use the right prefix for registers. */
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#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
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/* Use the right prefix for immediate values. */
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#define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x)
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#define d0 REG (d0)
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#define d1 REG (d1)
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#define d2 REG (d2)
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#define d3 REG (d3)
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#define d4 REG (d4)
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#define d5 REG (d5)
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#define d6 REG (d6)
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#define d7 REG (d7)
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#define a0 REG (a0)
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#define a1 REG (a1)
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#define a2 REG (a2)
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#define a3 REG (a3)
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#define a4 REG (a4)
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#define a5 REG (a5)
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#define a6 REG (a6)
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#define fp REG (fp)
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#define sp REG (sp)
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.text
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.proc
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.globl SYM (__divsi3)
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SYM (__divsi3):
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movel d2, sp@-
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moveq IMM (1), d2 /* sign of result stored in d2 (=1 or =-1) */
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movel sp@(12), d1 /* d1 = divisor */
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jpl L1
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negl d1
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#if !(defined(__mcf5200__) || defined(__mcoldfire__))
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negb d2 /* change sign because divisor <0 */
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#else
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negl d2 /* change sign because divisor <0 */
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#endif
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L1: movel sp@(8), d0 /* d0 = dividend */
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jpl L2
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negl d0
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#if !(defined(__mcf5200__) || defined(__mcoldfire__))
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negb d2
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#else
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negl d2
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#endif
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L2: movel d1, sp@-
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movel d0, sp@-
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jbsr SYM (__udivsi3) /* divide abs(dividend) by abs(divisor) */
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addql IMM (8), sp
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tstb d2
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jpl L3
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negl d0
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L3: movel sp@+, d2
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rts
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