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< a href = 'https://github.com/akkartik/mu/blob/master/subx/065error-byte.subx' > https://github.com/akkartik/mu/blob/master/subx/065error-byte.subx< / a >
< pre id = 'vimCodeElement' >
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< span id = "L1" class = "LineNr" > 1 < / span > < span class = "subxComment" > # Print an error message followed by the text representation of a byte. Then exit.< / span >
< span id = "L2" class = "LineNr" > 2 < / span >
< span id = "L3" class = "LineNr" > 3 < / span > == code
< span id = "L4" class = "LineNr" > 4 < / span > < span class = "subxComment" > # instruction effective address register displacement immediate< / span >
< span id = "L5" class = "LineNr" > 5 < / span > < span class = "subxS1Comment" > # . op subop mod rm32 base index scale r32< / span >
< span id = "L6" class = "LineNr" > 6 < / span > < span class = "subxS1Comment" > # . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes< / span >
< span id = "L7" class = "LineNr" > 7 < / span >
< span id = "L8" class = "LineNr" > 8 < / span > < span class = "subxComment" > # main:< / span >
< span id = "L9" class = "LineNr" > 9 < / span > < span class = "subxComment" > # manual test< / span >
< span id = "L10" class = "LineNr" > 10 < / span > < span class = "CommentedCode" > #? # . var ed/EAX : exit-descriptor< / span >
< span id = "L11" class = "LineNr" > 11 < / span > < span class = "CommentedCode" > #? 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # subtract from ESP< / span >
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< span id = "L12" class = "LineNr" > 12 < / span > < span class = "CommentedCode" > #? 89/copy 3/mod/direct 0/rm32/EAX . . . 4/r32/ESP . . # copy ESP to EAX< / span >
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< span id = "L13" class = "LineNr" > 13 < / span > < span class = "CommentedCode" > #? # . configure ed to really exit()< / span >
< span id = "L14" class = "LineNr" > 14 < / span > < span class = "CommentedCode" > #? # . . ed-> target = 0< / span >
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< span id = "L15" class = "LineNr" > 15 < / span > < span class = "CommentedCode" > #? c7 0/subop/copy 0/mod/direct 0/rm32/EAX . . . . . 0/imm32 # copy to *EAX< / span >
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< span id = "L16" class = "LineNr" > 16 < / span > < span class = "CommentedCode" > #? # . error-byte(ed, Stdout, msg, 34)< / span >
< span id = "L17" class = "LineNr" > 17 < / span > < span class = "CommentedCode" > #? 68/push 0x34/imm32< / span >
< span id = "L18" class = "LineNr" > 18 < / span > < span class = "CommentedCode" > #? 68/push " abc" /imm32< / span >
< span id = "L19" class = "LineNr" > 19 < / span > < span class = "CommentedCode" > #? 68/push Stderr/imm32< / span >
< span id = "L20" class = "LineNr" > 20 < / span > < span class = "CommentedCode" > #? 50/push-EAX< / span >
< span id = "L21" class = "LineNr" > 21 < / span > < span class = "CommentedCode" > #? e8/call error-byte/disp32< / span >
< span id = "L22" class = "LineNr" > 22 < / span > < span class = "subxComment" > # automatic test< / span >
< span id = "L23" class = "LineNr" > 23 < / span > e8/call run-tests/disp32 < span class = "subxComment" > # 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'.< / span >
< span id = "L24" class = "LineNr" > 24 < / span > < span class = "subxS1Comment" > # . syscall(exit, Num-test-failures)< / span >
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< span id = "L25" class = "LineNr" > 25 < / span > 8b/copy 0/mod/indirect 5/rm32/.disp32 < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 3/r32/EBX < span class = "SpecialChar" > < a href = '051test.subx.html#L87' > Num-test-failures< / a > < / span > /disp32 < span class = "subxComment" > # copy *Num-test-failures to EBX< / span >
< span id = "L26" class = "LineNr" > 26 < / span > b8/copy-to-EAX 1/imm32/exit
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< span id = "L27" class = "LineNr" > 27 < / span > cd/syscall 0x80/imm8
< span id = "L28" class = "LineNr" > 28 < / span >
< span id = "L29" class = "LineNr" > 29 < / span > < span class = "subxComment" > # write(out, " Error: " +msg+" : " +byte) then stop(ed, 1)< / span >
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< span id = "L30" class = "LineNr" > 30 < / span > < span class = "subxFunction" > < a href = '065error-byte.subx.html#L30' > error-byte< / a > < / span > : < span class = "subxComment" > # ed : (address exit-descriptor), out : (address buffered-file), msg : (address array byte), n : byte -> < void> < / span >
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< span id = "L31" class = "LineNr" > 31 < / span > < span class = "subxS1Comment" > # . prolog< / span >
< span id = "L32" class = "LineNr" > 32 < / span > 55/push-EBP
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< span id = "L33" class = "LineNr" > 33 < / span > 89/copy 3/mod/direct 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 4/r32/ESP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "subxComment" > # copy ESP to EBP< / span >
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< span id = "L34" class = "LineNr" > 34 < / span > < span class = "subxComment" > # write-buffered(out, " Error: " )< / span >
< span id = "L35" class = "LineNr" > 35 < / span > < span class = "subxS2Comment" > # . . push args< / span >
< span id = "L36" class = "LineNr" > 36 < / span > 68/push < span class = "Constant" > " Error: " < / span > /imm32
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< span id = "L37" class = "LineNr" > 37 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 0xc/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+12)< / span >
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< span id = "L38" class = "LineNr" > 38 < / span > < span class = "subxS2Comment" > # . . call< / span >
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< span id = "L39" class = "LineNr" > 39 < / span > e8/call < a href = '064write-buffered.subx.html#L17' > write-buffered< / a > /disp32
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< span id = "L40" class = "LineNr" > 40 < / span > < span class = "subxS2Comment" > # . . discard args< / span >
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< span id = "L41" class = "LineNr" > 41 < / span > 81 0/subop/add 3/mod/direct 4/rm32/ESP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 8/imm32 < span class = "subxComment" > # add to ESP< / span >
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< span id = "L42" class = "LineNr" > 42 < / span > < span class = "subxComment" > # write-buffered(out, msg)< / span >
< span id = "L43" class = "LineNr" > 43 < / span > < span class = "subxS2Comment" > # . . push args< / span >
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< span id = "L44" class = "LineNr" > 44 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 0x10/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+16)< / span >
< span id = "L45" class = "LineNr" > 45 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 0xc/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+12)< / span >
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< span id = "L46" class = "LineNr" > 46 < / span > < span class = "subxS2Comment" > # . . call< / span >
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< span id = "L47" class = "LineNr" > 47 < / span > e8/call < a href = '064write-buffered.subx.html#L17' > write-buffered< / a > /disp32
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< span id = "L48" class = "LineNr" > 48 < / span > < span class = "subxS2Comment" > # . . discard args< / span >
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< span id = "L49" class = "LineNr" > 49 < / span > 81 0/subop/add 3/mod/direct 4/rm32/ESP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 8/imm32 < span class = "subxComment" > # add to ESP< / span >
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< span id = "L50" class = "LineNr" > 50 < / span > < span class = "subxComment" > # write-buffered(out, " : " )< / span >
< span id = "L51" class = "LineNr" > 51 < / span > < span class = "subxS2Comment" > # . . push args< / span >
< span id = "L52" class = "LineNr" > 52 < / span > 68/push < span class = "Constant" > " : " < / span > /imm32
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< span id = "L53" class = "LineNr" > 53 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 0xc/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+12)< / span >
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< span id = "L54" class = "LineNr" > 54 < / span > < span class = "subxS2Comment" > # . . call< / span >
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< span id = "L55" class = "LineNr" > 55 < / span > e8/call < a href = '064write-buffered.subx.html#L17' > write-buffered< / a > /disp32
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< span id = "L56" class = "LineNr" > 56 < / span > < span class = "subxS2Comment" > # . . discard args< / span >
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< span id = "L57" class = "LineNr" > 57 < / span > 81 0/subop/add 3/mod/direct 4/rm32/ESP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 8/imm32 < span class = "subxComment" > # add to ESP< / span >
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< span id = "L58" class = "LineNr" > 58 < / span > < span class = "subxComment" > # print-byte(out, byte)< / span >
< span id = "L59" class = "LineNr" > 59 < / span > < span class = "subxS2Comment" > # . . push args< / span >
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< span id = "L60" class = "LineNr" > 60 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 0x14/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+20)< / span >
< span id = "L61" class = "LineNr" > 61 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 0xc/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+12)< / span >
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< span id = "L62" class = "LineNr" > 62 < / span > < span class = "subxS2Comment" > # . . call< / span >
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< span id = "L63" class = "LineNr" > 63 < / span > e8/call < a href = '063print-byte.subx.html#L15' > print-byte< / a > /disp32
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< span id = "L64" class = "LineNr" > 64 < / span > < span class = "subxS2Comment" > # . . discard args< / span >
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< span id = "L65" class = "LineNr" > 65 < / span > 81 0/subop/add 3/mod/direct 4/rm32/ESP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 8/imm32 < span class = "subxComment" > # add to ESP< / span >
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< span id = "L66" class = "LineNr" > 66 < / span > < span class = "subxComment" > # write-buffered(out, Newline)< / span >
< span id = "L67" class = "LineNr" > 67 < / span > < span class = "subxS2Comment" > # . . push args< / span >
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< span id = "L68" class = "LineNr" > 68 < / span > 68/push < span class = "SpecialChar" > < a href = '051test.subx.html#L81' > Newline< / a > < / span > /imm32
< span id = "L69" class = "LineNr" > 69 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 0xc/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+12)< / span >
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< span id = "L70" class = "LineNr" > 70 < / span > < span class = "subxS2Comment" > # . . call< / span >
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< span id = "L71" class = "LineNr" > 71 < / span > e8/call < a href = '064write-buffered.subx.html#L17' > write-buffered< / a > /disp32
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< span id = "L72" class = "LineNr" > 72 < / span > < span class = "subxS2Comment" > # . . discard args< / span >
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< span id = "L73" class = "LineNr" > 73 < / span > 81 0/subop/add 3/mod/direct 4/rm32/ESP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 8/imm32 < span class = "subxComment" > # add to ESP< / span >
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< span id = "L74" class = "LineNr" > 74 < / span > < span class = "subxS1Comment" > # . flush(out)< / span >
< span id = "L75" class = "LineNr" > 75 < / span > < span class = "subxS2Comment" > # . . push args< / span >
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< span id = "L76" class = "LineNr" > 76 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 0xc/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+12)< / span >
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< span id = "L77" class = "LineNr" > 77 < / span > < span class = "subxS2Comment" > # . . call< / span >
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< span id = "L78" class = "LineNr" > 78 < / span > e8/call < a href = '062write-byte.subx.html#L84' > flush< / a > /disp32
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< span id = "L79" class = "LineNr" > 79 < / span > < span class = "subxS2Comment" > # . . discard args< / span >
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< span id = "L80" class = "LineNr" > 80 < / span > 81 0/subop/add 3/mod/direct 4/rm32/ESP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 4/imm32 < span class = "subxComment" > # add to ESP< / span >
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< span id = "L81" class = "LineNr" > 81 < / span > < span class = "subxComment" > # stop(ed, 1)< / span >
< span id = "L82" class = "LineNr" > 82 < / span > < span class = "subxS2Comment" > # . . push args< / span >
< span id = "L83" class = "LineNr" > 83 < / span > 68/push 1/imm32
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< span id = "L84" class = "LineNr" > 84 < / span > ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 8/disp8 < span class = "Normal" > . < / span > < span class = "subxComment" > # push *(EBP+8)< / span >
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< span id = "L85" class = "LineNr" > 85 < / span > < span class = "subxS2Comment" > # . . call< / span >
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< span id = "L86" class = "LineNr" > 86 < / span > e8/call < a href = '057stop.subx.html#L99' > stop< / a > /disp32
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< span id = "L87" class = "LineNr" > 87 < / span > < span class = "subxComment" > # should never get past this point< / span >
< span id = "L88" class = "LineNr" > 88 < / span > < span class = "Constant" > $error-byte:dead-end< / span > :
< span id = "L89" class = "LineNr" > 89 < / span > < span class = "subxS1Comment" > # . epilog< / span >
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< span id = "L90" class = "LineNr" > 90 < / span > 89/copy 3/mod/direct 4/rm32/ESP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > 5/r32/EBP < span class = "Normal" > . < / span > < span class = "Normal" > . < / span > < span class = "subxComment" > # copy EBP to ESP< / span >
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< span id = "L91" class = "LineNr" > 91 < / span > 5d/pop-to-EBP
< span id = "L92" class = "LineNr" > 92 < / span > c3/return
< span id = "L93" class = "LineNr" > 93 < / span >
< span id = "L94" class = "LineNr" > 94 < / span > == data
< span id = "L95" class = "LineNr" > 95 < / span >
< span id = "L96" class = "LineNr" > 96 < / span > < span class = "subxComment" > # The buffered file for standard error.< / span >
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< span id = "L97" class = "LineNr" > 97 < / span > < span class = "SpecialChar" > < a href = '065error-byte.subx.html#L97' > Stderr< / a > < / span > :
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< span id = "L98" class = "LineNr" > 98 < / span > < span class = "subxComment" > # file descriptor or (address stream)< / span >
< span id = "L99" class = "LineNr" > 99 < / span > 02 00 00 00 < span class = "subxComment" > # 1 = standard error< / span >
< span id = "L100" class = "LineNr" > 100 < / span > < span class = "subxComment" > # current write index< / span >
< span id = "L101" class = "LineNr" > 101 < / span > 00 00 00 00
< span id = "L102" class = "LineNr" > 102 < / span > < span class = "subxComment" > # current read index< / span >
< span id = "L103" class = "LineNr" > 103 < / span > 00 00 00 00
< span id = "L104" class = "LineNr" > 104 < / span > < span class = "subxComment" > # length (8)< / span >
< span id = "L105" class = "LineNr" > 105 < / span > 08 00 00 00
< span id = "L106" class = "LineNr" > 106 < / span > < span class = "subxComment" > # data< / span >
< span id = "L107" class = "LineNr" > 107 < / span > 00 00 00 00 00 00 00 00 < span class = "subxComment" > # 8 bytes< / span >
< span id = "L108" class = "LineNr" > 108 < / span >
< span id = "L109" class = "LineNr" > 109 < / span > < span class = "subxComment" > # TODO: 8 bytes is too small. We'll need to grow the buffer for efficiency. But< / span >
< span id = "L110" class = "LineNr" > 110 < / span > < span class = "subxComment" > # I don't want to type in 1024 bytes here.< / span >
< span id = "L111" class = "LineNr" > 111 < / span >
< span id = "L112" class = "LineNr" > 112 < / span > < span class = "subxS2Comment" > # . . vim: nowrap:textwidth=0< / span >
2018-12-04 20:26:27 +00:00
< / pre >
< / body >
< / html >
<!-- vim: set foldmethod=manual : -->