Mercurial > hg > CbC > CbC_gcc

annotate gcc/config/vax/lib1funcs.asm @ 55:77e2b8dfacca gcc-4.4.5

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update it from 4.4.3 to 4.5.0
author ryoma <e075725@ie.u-ryukyu.ac.jp>
date Fri, 12 Feb 2010 23:39:51 +0900
parents
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rev   line source
55
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
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1 /* Copyright (C) 2009 Free Software Foundation, Inc.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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2 This file is part of GCC.
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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3 Contributed by Maciej W. Rozycki <macro@linux-mips.org>.
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4
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5 This file is free software; you can redistribute it and/or modify it
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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6 under the terms of the GNU General Public License as published by the
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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7 Free Software Foundation; either version 3, or (at your option) any
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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8 later version.
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9
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10 This file is distributed in the hope that it will be useful, but
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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13 General Public License for more details.
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14
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15 Under Section 7 of GPL version 3, you are granted additional
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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16 permissions described in the GCC Runtime Library Exception, version
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17 3.1, as published by the Free Software Foundation.
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18
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19 You should have received a copy of the GNU General Public License and
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20 a copy of the GCC Runtime Library Exception along with this program;
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21 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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22 <http://www.gnu.org/licenses/>. */
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23
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24 #ifdef L_udivsi3
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25 .text
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26 .globl __udivsi3
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27 .type __udivsi3, @function
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28 __udivsi3:
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29 .word 0
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30 movl 8(%ap), %r1
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31 blss 0f /* Check bit #31 of divisor. */
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32 movl 4(%ap), %r2
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33 blss 1f /* Check bit #31 of dividend. */
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34
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35 /* Both zero, do a standard division. */
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36
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37 divl3 %r1, %r2, %r0
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38 ret
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39
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40 /* MSB of divisor set, only 1 or 0 may result. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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41 0:
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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42 decl %r1
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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43 clrl %r0
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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44 cmpl %r1, 4(%ap)
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45 adwc $0, %r0
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46 ret
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47
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48 /* MSB of dividend set, do an extended division. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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49 1:
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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50 clrl %r3
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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51 ediv %r1, %r2, %r0, %r3
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ryoma <e075725@ie.u-ryukyu.ac.jp>
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52 ret
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53 .size __udivsi3, . - __udivsi3
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54 .previous
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55 #endif
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56
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57 #ifdef L_umodsi3
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58 .text
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59 .globl __umodsi3
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60 .type __umodsi3, @function
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61 __umodsi3:
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62 .word 0
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63 movl 8(%ap), %r1
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64 blss 0f /* Check bit #31 of divisor. */
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65 movl 4(%ap), %r2
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66 blss 1f /* Check bit #31 of dividend. */
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67
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68 /* Both zero, do a standard division. */
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69
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70 divl3 %r1, %r2, %r0
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71 mull2 %r0, %r1
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72 subl3 %r1, %r2, %r0
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73 ret
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74
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75 /* MSB of divisor set, subtract the divisor at most once. */
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76 0:
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77 movl 4(%ap), %r2
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78 clrl %r0
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79 cmpl %r2, %r1
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80 sbwc $0, %r0
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81 bicl2 %r0, %r1
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82 subl3 %r1, %r2, %r0
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83 ret
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84
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85 /* MSB of dividend set, do an extended division. */
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86 1:
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87 clrl %r3
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88 ediv %r1, %r2, %r3, %r0
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89 ret
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90 .size __umodsi3, . - __umodsi3
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91 .previous
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92 #endif