Rev | Line | |
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[2] | 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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