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annotate src/video/riscos/SDL_riscosASM.S @ 3092:cad1aefa2ed9

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Date: Thu, 12 Mar 2009 15:14:38 +0200 From: "Mike Gorchak" Subject: New QNX patches In photon.tar.gz there are new files to be placed into ./src/video/photon/ directory. qnx3.diff - new patches for QNX support. Since I've found a lot of bugs in the new GF QNX Graphics Framework and I'm suspended development for GF driver until already found bugs will be fixed and switched to Photon driver implementation. sdl.diff - I've found that renderer creation result has not been checked and SDL shows error like: "there is no current renderer", now SDL will show correct error which was set be renderer.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 17 Mar 2009 03:24:22 +0000
parents 99210400e8b9
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rev   line source
1459
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1 ;
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2 ; SDL - Simple DirectMedia Layer
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3 ; Copyright (C) 1997-2009 Sam Lantinga
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4 ;
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5 ; This library is free software; you can redistribute it and/or
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6 ; modify it under the terms of the GNU Library General Public
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7 ; License as published by the Free Software Foundation; either
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8 ; version 2 of the License, or (at your option) any later version.
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9 ;
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10 ; This library is distributed in the hope that it will be useful,
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11 ; but 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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13 ; Library General Public License for more details.
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14 ;
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15 ; You should have received a copy of the GNU Library General Public
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16 ; License along with this library; if not, write to the Free
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17 ; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 ;
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19 ; Sam Lantinga
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20 ; slouken@libsdl.org
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21 ;
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22 ; Assembler routines for RISC OS display
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23 ;
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24
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25 AREA |C$$CODE|
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26
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27 EXPORT |RISCOS_Put32|
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28
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29 ; Display 32bpp to 32bpp, 1:1
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30 ;
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31 ; Code provided by Adrain Lees
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32 ;
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33 ; entry a1 -> destination
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34 ; a2 = dest width in pixels
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35 ; a3 = dest line length in bytes
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36 ; a4 = dest height in scanlines
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37 ; arg5 -> source
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38 ; arg6 = byte offset from end of source line to start of next
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39
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40 Arg5 * 10*4
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41 Arg6 * Arg5+4
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42
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43 RISCOS_Put32 ROUT
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44 STMFD sp!,{a2,v1-v6,sl,fp,lr}
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45 LDR ip,[sp,#Arg5]
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46 MOV lr,a1
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47 B ucp64lp
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48
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49 00 ;tail strip of 1-15 pixels
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50
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51 LDR v1,[ip],#4
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52 01 SUBS a2,a2,#1
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53 STR v1,[lr],#4
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54 LDRHI v1,[ip],#4
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55 BHI %01
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56 B %02
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57
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58 ucp64end ADDS a2,a2,#16
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59 BNE %00
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60
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61 02 SUBS a4,a4,#1 ;height--
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62 LDRHI v1,[sp,#Arg6]
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63 LDRHI a2,[sp] ;reload width
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64 BLS %03
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65
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66 ;move to start of next scanline
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67
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68 ADD lr,a1,a3
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69 ADD a1,a1,a3
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70 ADD ip,ip,v1
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71
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72 ucp64lp SUBS a2,a2,#16
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73 BLO ucp64end
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74
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75 PLD [ip,#64]
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76
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77 LDR v1,[ip],#4
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78 LDR v2,[ip],#4
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79 LDR v3,[ip],#4
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80 LDR v4,[ip],#4
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81 LDR v5,[ip],#4
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82 LDR v6,[ip],#4
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83 LDR sl,[ip],#4
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84 LDR fp,[ip],#4
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85 STR v1,[lr],#4
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86 STR v2,[lr],#4
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87 STR v3,[lr],#4
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88 STR v4,[lr],#4
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89 STR v5,[lr],#4
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90 STR v6,[lr],#4
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91 STR sl,[lr],#4
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92 STR fp,[lr],#4
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93
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94 PLD [ip,#64]
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95
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96 LDR v1,[ip],#4
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97 LDR v2,[ip],#4
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98 LDR v3,[ip],#4
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99 LDR v4,[ip],#4
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100 LDR v5,[ip],#4
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101 LDR v6,[ip],#4
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102 LDR sl,[ip],#4
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103 LDR fp,[ip],#4
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104 STR v1,[lr],#4
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105 STR v2,[lr],#4
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106 STR v3,[lr],#4
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107 STR v4,[lr],#4
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108 STR v5,[lr],#4
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109 STR v6,[lr],#4
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110 STR sl,[lr],#4
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111 STR fp,[lr],#4
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112
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113 B ucp64lp
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114
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115 03 LDMFD sp!,{a2,v1-v6,sl,fp,pc}
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116