diff options
Diffstat (limited to 'subx/072slice.subx')
| -rw-r--r-- | subx/072slice.subx | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/subx/072slice.subx b/subx/072slice.subx index 36bdfdd4..3b948d60 100644 --- a/subx/072slice.subx +++ b/subx/072slice.subx @@ -503,6 +503,108 @@ test-write-slice: 5d/pop-to-EBP c3/return +# write an entire stream's contents to a buffered-file +# ways to do this: +# - construct a 'maximal slice' and pass it to write-slice +# - flush the buffered-file and pass the stream directly to its fd (disabling buffering) +# we'll go with the first way for now +write-stream-buffered: # f : (address buffered-file), s : (address stream) + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers + 50/push-EAX + 56/push-ESI + # ESI = s + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI + # var slice/ECX = {s->data, s->data + s->write} + # . push s->data + s->write + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # copy *ESI to EAX + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/ESI 0/index/EAX . 0/r32/EAX 0xc/disp8 . # copy ESI+EAX+12 to EAX + 50/push-EAX + # . push s->data + 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 0/r32/EAX 0xc/disp8 . # copy ESI+12 to EAX + 50/push-EAX + # . ECX = ESP + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # write-slice(f, slice) + # . . push args + 51/push-ECX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call write-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +$write-stream-buffered:end: + # . restore registers + 5e/pop-to-ESI + 58/pop-to-EAX + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-write-stream-buffered: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-stream) + # . . push args + 68/push _test-stream/imm32 + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # . clear-stream(_test-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-buffered-file/imm32 + 05/add-to-EAX 4/imm32 + 50/push-EAX + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # initialize input + # . write(_test-tmp-stream, "abcd") + # . . push args + 68/push "abcd"/imm32 + 68/push _test-tmp-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # perform the write-stream-buffered + # . write-stream-buffered(_test-buffered-file, _test-tmp-stream) + # . . push args + 68/push _test-tmp-stream/imm32 + 68/push _test-buffered-file/imm32 + # . . call + e8/call write-stream-buffered/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check that the write happened as expected + # . flush(_test-buffered-file) + # . . push args + 68/push _test-buffered-file/imm32 + # . . call + e8/call flush/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # . check-stream-equal(_test-stream, "abcd", msg) + # . . push args + 68/push "F - test-write-stream-buffered"/imm32 + 68/push "abcd"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call check-stream-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + == data _test-slice-data-0: |