Last change
on this file since 102 was
81,
checked in by rosiere, 16 years ago
|
- Finish Environment (and test)
- Continue predictor_unit
- Add external tools
- svn keyword "Id" set
|
-
Property svn:keywords set to
Id
|
File size:
2.2 KB
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Line | |
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1 | /******************************************** |
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2 | * files : asm_003_extend.s |
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3 | * authors : Rosiere Mathieu |
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4 | * date : 2006/06/20 |
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5 | ******************************************** |
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6 | * input : - |
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7 | * output : 1 test OK |
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8 | * 0 test KO |
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9 | ******************************************** |
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10 | * test : l.extbs, l.extbz, l.exthz, l.exths |
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11 | * warning : instruction ok |
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12 | * l.addi |
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13 | * l.and |
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14 | * l.jal |
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15 | * l.jr |
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16 | * l.lwz |
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17 | * l.ori |
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18 | * l.sw |
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19 | ******************************************** |
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20 | */ |
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21 | .file "asm_003_extend.s" |
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22 | .section .text |
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23 | .align 4 |
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24 | |
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25 | .global _asm_003_extend |
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26 | _asm_003_extend : |
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27 | /* save context */ |
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28 | l.addi r1,r1,-12 |
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29 | l.sw 0 (r1),r20 |
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30 | l.sw 4 (r1),r21 |
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31 | l.sw 8 (r1),r22 |
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32 | /* Return is KO (default)*/ |
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33 | l.and r11,r0,r0 |
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34 | |
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35 | /* WARNING : gcc don't compile if l.extXX have not two source register */ |
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36 | |
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37 | /* step 1 : test extend byte */ |
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38 | |
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39 | /* step 1.1 : test with a variable not signed */ |
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40 | |
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41 | l.ori r20,r0,0x007F |
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42 | |
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43 | l.extbz r22,r20 |
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44 | l.sfeq r22,r20 |
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45 | l.bnf _asm_003_extend_ko |
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46 | l.nop 1 |
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47 | |
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48 | l.extbs r22,r20 |
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49 | l.sfeq r22,r20 |
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50 | l.bnf _asm_003_extend_ko |
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51 | l.nop 2 |
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52 | |
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53 | /* step 1.2 : test with a varibale signed */ |
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54 | l.ori r20,r0,0x0080 |
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55 | |
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56 | l.movhi r21,0xFFFF |
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57 | l.ori r21,r21,0xFF80 |
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58 | |
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59 | l.extbz r22,r20 |
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60 | l.sfeq r22,r20 |
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61 | l.bnf _asm_003_extend_ko |
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62 | l.nop 3 |
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63 | |
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64 | l.extbs r22,r20 |
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65 | l.sfeq r22,r21 |
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66 | l.bnf _asm_003_extend_ko |
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67 | l.nop 4 |
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68 | |
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69 | /* step 2 : test extend half word */ |
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70 | |
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71 | /* step 2.1 : test with a variable not signed */ |
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72 | |
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73 | l.ori r20,r0,0x7FFF |
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74 | |
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75 | l.exthz r22,r20 |
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76 | l.sfeq r22,r20 |
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77 | l.bnf _asm_003_extend_ko |
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78 | l.nop 5 |
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79 | |
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80 | l.exths r22,r20 |
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81 | l.sfeq r22,r20 |
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82 | l.bnf _asm_003_extend_ko |
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83 | l.nop 6 |
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84 | |
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85 | /* step 2.2 : test with a variable signed */ |
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86 | l.ori r20,r0,0x8000 |
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87 | |
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88 | l.movhi r21,0xFFFF |
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89 | l.ori r21,r21,0x8000 |
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90 | |
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91 | l.exthz r22,r20 |
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92 | l.sfeq r22,r20 |
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93 | l.bnf _asm_003_extend_ko |
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94 | l.nop 7 |
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95 | |
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96 | l.exths r22,r20 |
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97 | l.sfeq r22,r21 |
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98 | l.bnf _asm_003_extend_ko |
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99 | l.nop 8 |
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100 | |
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101 | _asm_003_extend_ok : |
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102 | l.addi r11,r0,1 |
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103 | _asm_003_extend_ko : |
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104 | |
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105 | /* load context */ |
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106 | l.lwz r22,8 (r1) |
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107 | l.lwz r21,4 (r1) |
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108 | l.lwz r20,0 (r1) |
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109 | l.jr r9 |
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110 | l.addi r1,r1,12 |
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