Mu - linux/125write-stream-data.subx

https://github.com/akkartik/mu/blob/main/linux/125write-stream-data.subx

  1 == code
  2 #   instruction                     effective address                                                   register    displacement    immediate
  3 # . op          subop               mod             rm32          base        index         scale       r32
  4 # . 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
  5 
  6 # write an entire stream's contents to a buffered-file
  7 # ways to do this:
  8 #   - construct a 'maximal slice' and pass it to write-slice-buffered
  9 #   - flush the buffered-file and pass the stream directly to its fd (disabling buffering)
 10 # we'll go with the first way for now
 11 write-stream-data:  # f: (addr buffered-file), s: (addr stream byte)
 12     # . prologue
 13     55/push-ebp
 14     89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
 15     # . save registers
 16     50/push-eax
 17     51/push-ecx
 18     56/push-esi
 19     # esi = s
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Дані були успішно відправлені.

class="LineNr"> 55 # setup 56 # . clear-stream(_test-output-stream) 57 # . . push args 58 68/push _test-output-stream/imm32 59 # . . call 60 e8/call clear-stream/disp32 61 # . . discard args 62 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp 63 # . clear-stream($_test-output-buffered-file->buffer) 64 # . . push args 65 68/push $_test-output-buffered-file->buffer/imm32 66 # . . call 67 e8/call clear-stream/disp32 68 # . . discard args 69 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp 70 # . clear-stream(_test-input-stream) 71 # . . push args 72 68/push _test-input-stream/imm32 73 # . . call 74 e8/call clear-stream/disp32 75 # . . discard args 76 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp 77 # initialize input 78 # . write(_test-input-stream, "abcd") 79 # . . push args 80 68/push "abcd"/imm32 81 68/push _test-input-stream/imm32 82 # . . call 83 e8/call write/disp32 84 # . . discard args 85 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 86 # write-stream-data(_test-output-buffered-file, _test-input-stream) 87 # . . push args 88 68/push _test-input-stream/imm32 89 68/push _test-output-buffered-file/imm32 90 # . . call 91 e8/call write-stream-data/disp32 92 # . . discard args 93 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 94 # check that the write happened as expected 95 # . flush(_test-output-buffered-file) 96 # . . push args 97 68/push _test-output-buffered-file/imm32 98 # . . call 99 e8/call flush/disp32 100 # . . discard args 101 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp 102 # . check-stream-equal(_test-output-stream, "abcd", msg) 103 # . . push args 104 68/push "F - test-write-stream-data"/imm32 105 68/push "abcd"/imm32 106 68/push _test-output-stream/imm32 107 # . . call 108 e8/call check-stream-equal/disp32 109 # . . discard args 110 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp 111 # . epilogue 112 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 113 5d/pop-to-ebp 114 c3/return