ia64/linux-2.6.18-xen.hg

view arch/m68knommu/lib/divsi3.S @ 854:950b9eb27661

usbback: fix urb interval value for interrupt urbs.

Signed-off-by: Noboru Iwamatsu <n_iwamatsu@jp.fujitsu.com>
author Keir Fraser <keir.fraser@citrix.com>
date Mon Apr 06 13:51:20 2009 +0100 (2009-04-06)
parents 831230e53067
children
line source
1 /* libgcc1 routines for 68000 w/o floating-point hardware.
2 Copyright (C) 1994, 1996, 1997, 1998 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
9 later version.
11 In addition to the permissions in the GNU General Public License, the
12 Free Software Foundation gives you unlimited permission to link the
13 compiled version of this file with other programs, and to distribute
14 those programs without any restriction coming from the use of this
15 file. (The General Public License restrictions do apply in other
16 respects; for example, they cover modification of the file, and
17 distribution when not linked into another program.)
19 This file is distributed in the hope that it will be useful, but
20 WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 General Public License for more details.
24 You should have received a copy of the GNU General Public License
25 along with this program; see the file COPYING. If not, write to
26 the Free Software Foundation, 59 Temple Place - Suite 330,
27 Boston, MA 02111-1307, USA. */
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. */
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 */
41 /* These are predefined by new versions of GNU cpp. */
43 #ifndef __USER_LABEL_PREFIX__
44 #define __USER_LABEL_PREFIX__ _
45 #endif
47 #ifndef __REGISTER_PREFIX__
48 #define __REGISTER_PREFIX__
49 #endif
51 #ifndef __IMMEDIATE_PREFIX__
52 #define __IMMEDIATE_PREFIX__ #
53 #endif
55 /* ANSI concatenation macros. */
57 #define CONCAT1(a, b) CONCAT2(a, b)
58 #define CONCAT2(a, b) a ## b
60 /* Use the right prefix for global labels. */
62 #define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
64 /* Use the right prefix for registers. */
66 #define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
68 /* Use the right prefix for immediate values. */
70 #define IMM(x) CONCAT1 (__IMMEDIATE_PREFIX__, x)
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)
90 .text
91 .proc
92 .globl SYM (__divsi3)
93 SYM (__divsi3):
94 movel d2, sp@-
96 moveq IMM (1), d2 /* sign of result stored in d2 (=1 or =-1) */
97 movel sp@(12), d1 /* d1 = divisor */
98 jpl L1
99 negl d1
100 #if !(defined(__mcf5200__) || defined(__mcoldfire__))
101 negb d2 /* change sign because divisor <0 */
102 #else
103 negl d2 /* change sign because divisor <0 */
104 #endif
105 L1: movel sp@(8), d0 /* d0 = dividend */
106 jpl L2
107 negl d0
108 #if !(defined(__mcf5200__) || defined(__mcoldfire__))
109 negb d2
110 #else
111 negl d2
112 #endif
114 L2: movel d1, sp@-
115 movel d0, sp@-
116 jbsr SYM (__udivsi3) /* divide abs(dividend) by abs(divisor) */
117 addql IMM (8), sp
119 tstb d2
120 jpl L3
121 negl d0
123 L3: movel sp@+, d2
124 rts