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| author | Kartik Agaram <vc@akkartik.com> | 2020-07-05 12:13:28 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-07-05 12:13:28 -0700 |
| commit | c09c91e185aad8e01b570c2569e13c1e429d2f99 (patch) | |
| tree | 52a5ae1494ad5b7b2319411815dc45510e761c24 /124next-token.subx | |
| parent | f2c5b05374186f9422cfdaf1ada096e39ac91a8b (diff) | |
| download | mu-c09c91e185aad8e01b570c2569e13c1e429d2f99.tar.gz | |
6612 - reorganize layers
Diffstat (limited to '124next-token.subx')
| -rw-r--r-- | 124next-token.subx | 1925 |
1 files changed, 1925 insertions, 0 deletions
diff --git a/124next-token.subx b/124next-token.subx new file mode 100644 index 00000000..4fc13322 --- /dev/null +++ b/124next-token.subx @@ -0,0 +1,1925 @@ +# Some tokenization primitives. + +== code +# instruction effective address register displacement immediate +# . op subop mod rm32 base index scale r32 +# . 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 + +# extract the next run of characters that are different from a given 'delimiter' (skipping multiple delimiters if necessary) +# on reaching end of file, return an empty interval +next-token: # in: (addr stream byte), delimiter: byte, out: (addr slice) + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 50/push-eax + 51/push-ecx + 56/push-esi + 57/push-edi + # esi = in + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi + # edi = out + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 0x10/disp8 . # copy *(ebp+16) to edi + # skip-chars-matching(in, delimiter) + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) + 56/push-esi + # . . call + e8/call skip-chars-matching/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # out->start = &in->data[in->read] + 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/eax 0xc/disp8 . # copy esi+ecx+12 to eax + 89/copy 0/mod/indirect 7/rm32/edi . . . 0/r32/eax . . # copy eax to *edi + # skip-chars-not-matching(in, delimiter) + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) + 56/push-esi + # . . call + e8/call skip-chars-not-matching/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # out->end = &in->data[in->read] + 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/eax 0xc/disp8 . # copy esi+ecx+12 to eax + 89/copy 1/mod/*+disp8 7/rm32/edi . . . 0/r32/eax 4/disp8 . # copy eax to *(edi+4) + # . restore registers + 5f/pop-to-edi + 5e/pop-to-esi + 59/pop-to-ecx + 58/pop-to-eax + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-next-token: + # . prologue + 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 + # var slice/ecx: slice + 68/push 0/imm32/end + 68/push 0/imm32/start + 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx + # write(_test-stream, " ab") + # . . push args + 68/push " ab"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # next-token(_test-stream, 0x20/space, slice) + # . . push args + 51/push-ecx + 68/push 0x20/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call next-token/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # check-ints-equal(slice->start - _test-stream->data, 2, msg) + # . check-ints-equal(slice->start - _test-stream, 14, msg) + # . . push args + 68/push "F - test-next-token: start"/imm32 + 68/push 0xe/imm32 + # . . push slice->start - _test-stream + 8b/copy 0/mod/indirect 1/rm32/ecx . . . 0/r32/eax . . # copy *ecx to eax + 81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-stream/imm32 # subtract from eax + 50/push-eax + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # check-ints-equal(slice->end - _test-stream->data, 4, msg) + # . check-ints-equal(slice->end - _test-stream, 16, msg) + # . . push args + 68/push "F - test-next-token: end"/imm32 + 68/push 0x10/imm32 + # . . push slice->end - _test-stream + 8b/copy 1/mod/*+disp8 1/rm32/ecx . . . 0/r32/eax 4/disp8 . # copy *(ecx+4) to eax + 81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-stream/imm32 # subtract from eax + 50/push-eax + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-next-token-Eof: + # . prologue + 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 + # var slice/ecx: slice + 68/push 0/imm32/end + 68/push 0/imm32/start + 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx + # write nothing to _test-stream + # next-token(_test-stream, 0x20/space, slice) + # . . push args + 51/push-ecx + 68/push 0x20/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call next-token/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # check-ints-equal(slice->end, slice->start, msg) + # . . push args + 68/push "F - test-next-token-Eof"/imm32 + ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) + ff 6/subop/push 0/mod/indirect 1/rm32/ecx . . . . . . # push *ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +# extract the next run of characters that are different from a given 'delimiter' (skipping multiple delimiters if necessary) +# on reaching end of file, return an empty interval +next-token-from-slice: # start: (addr byte), end: (addr byte), delimiter: byte, out: (addr slice) + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 50/push-eax + 51/push-ecx + 52/push-edx + 57/push-edi + # ecx = end + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx + # edx = delimiter + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0x10/disp8 . # copy *(ebp+16) to edx + # edi = out + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 0x14/disp8 . # copy *(ebp+20) to edi + # eax = skip-chars-matching-in-slice(start, end, delimiter) + # . . push args + 52/push-edx + 51/push-ecx + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) + # . . call + e8/call skip-chars-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # out->start = eax + 89/copy 0/mod/indirect 7/rm32/edi . . . 0/r32/eax . . # copy eax to *edi + # eax = skip-chars-not-matching-in-slice(eax, end, delimiter) + # . . push args + 52/push-edx + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-chars-not-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # out->end = eax + 89/copy 1/mod/*+disp8 7/rm32/edi . . . 0/r32/eax 4/disp8 . # copy eax to *(edi+4) + # . restore registers + 5f/pop-to-edi + 5a/pop-to-edx + 59/pop-to-ecx + 58/pop-to-eax + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-next-token-from-slice: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # (eax..ecx) = " ab" + b8/copy-to-eax " ab"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # var out/edi: slice + 68/push 0/imm32/end + 68/push 0/imm32/start + 89/copy 3/mod/direct 7/rm32/edi . . . 4/r32/esp . . # copy esp to edi + # next-token-from-slice(eax, ecx, 0x20/space, out) + # . . push args + 57/push-edi + 68/push 0x20/imm32 + 51/push-ecx + 50/push-eax + # . . call + e8/call next-token-from-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp + # out->start should be at the 'a' + # . check-ints-equal(out->start - in->start, 2, msg) + # . . push args + 68/push "F - test-next-token-from-slice: start"/imm32 + 68/push 2/imm32 + # . . push out->start - in->start + 8b/copy 0/mod/indirect 7/rm32/edi . . . 1/r32/ecx . . # copy *edi to ecx + 2b/subtract 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # out->end should be after the 'b' + # check-ints-equal(out->end - in->start, 4, msg) + # . . push args + 68/push "F - test-next-token-from-slice: end"/imm32 + 68/push 4/imm32 + # . . push out->end - in->start + 8b/copy 1/mod/*+disp8 7/rm32/edi . . . 1/r32/ecx 4/disp8 . # copy *(edi+4) to ecx + 2b/subtract 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-next-token-from-slice-Eof: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # var out/edi: slice + 68/push 0/imm32/end + 68/push 0/imm32/start + 89/copy 3/mod/direct 7/rm32/edi . . . 4/r32/esp . . # copy esp to edi + # next-token-from-slice(0, 0, 0x20/space, out) + # . . push args + 57/push-edi + 68/push 0x20/imm32 + 68/push 0/imm32 + 68/push 0/imm32 + # . . call + e8/call next-token-from-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp + # out should be empty + # . check-ints-equal(out->end - out->start, 0, msg) + # . . push args + 68/push "F - test-next-token-from-slice-Eof"/imm32 + 68/push 0/imm32 + # . . push out->start - in->start + 8b/copy 1/mod/*+disp8 7/rm32/edi . . . 1/r32/ecx 4/disp8 . # copy *(edi+4) to ecx + 2b/subtract 0/mod/indirect 7/rm32/edi . . . 1/r32/ecx . . # subtract *edi from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-next-token-from-slice-nothing: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # (eax..ecx) = " " + b8/copy-to-eax " "/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # var out/edi: slice + 68/push 0/imm32/end + 68/push 0/imm32/start + 89/copy 3/mod/direct 7/rm32/edi . . . 4/r32/esp . . # copy esp to edi + # next-token-from-slice(in, 0x20/space, out) + # . . push args + 57/push-edi + 68/push 0x20/imm32 + 51/push-ecx + 50/push-eax + # . . call + e8/call next-token-from-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp + # out should be empty + # . check-ints-equal(out->end - out->start, 0, msg) + # . . push args + 68/push "F - test-next-token-from-slice-Eof"/imm32 + 68/push 0/imm32 + # . . push out->start - in->start + 8b/copy 1/mod/*+disp8 7/rm32/edi . . . 1/r32/ecx 4/disp8 . # copy *(edi+4) to ecx + 2b/subtract 0/mod/indirect 7/rm32/edi . . . 1/r32/ecx . . # subtract *edi from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +skip-chars-matching: # in: (addr stream byte), delimiter: byte + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 50/push-eax + 51/push-ecx + 52/push-edx + 53/push-ebx + 56/push-esi + # esi = in + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi + # ecx = in->read + 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx + # ebx = in->write + 8b/copy 0/mod/indirect 6/rm32/esi . . . 3/r32/ebx . . # copy *esi to ebx + # edx = delimiter + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx +$skip-chars-matching:loop: + # if (in->read >= in->write) break + 39/compare 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx . . # compare ecx with ebx + 7d/jump-if->= $skip-chars-matching:end/disp8 + # eax = in->data[in->read] + 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax + 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/AL 0xc/disp8 . # copy byte at *(esi+ecx+12) to AL + # if (eax != delimiter) break + 39/compare 3/mod/direct 0/rm32/eax . . . 2/r32/edx . . # compare eax and edx + 75/jump-if-!= $skip-chars-matching:end/disp8 + # ++in->read + 41/increment-ecx + eb/jump $skip-chars-matching:loop/disp8 +$skip-chars-matching:end: + # persist in->read + 89/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy ecx to *(esi+4) + # . restore registers + 5e/pop-to-esi + 5b/pop-to-ebx + 5a/pop-to-edx + 59/pop-to-ecx + 58/pop-to-eax + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-chars-matching: + # 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 + # write(_test-stream, " ab") + # . . push args + 68/push " ab"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # skip-chars-matching(_test-stream, 0x20/space) + # . . push args + 68/push 0x20/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call skip-chars-matching/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(_test-stream->read, 2, msg) + # . . push args + 68/push "F - test-skip-chars-matching"/imm32 + 68/push 2/imm32 + # . . push *_test-stream->read + b8/copy-to-eax _test-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +test-skip-chars-matching-none: + # 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 + # write(_test-stream, "ab") + # . . push args + 68/push "ab"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # skip-chars-matching(_test-stream, 0x20/space) + # . . push args + 68/push 0x20/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call skip-chars-matching/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(_test-stream->read, 0, msg) + # . . push args + 68/push "F - test-skip-chars-matching-none"/imm32 + 68/push 0/imm32 + # . . push *_test-stream->read + b8/copy-to-eax _test-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +skip-chars-matching-whitespace: # in: (addr stream byte) + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 50/push-eax + 51/push-ecx + 53/push-ebx + 56/push-esi + # esi = in + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi + # ecx = in->read + 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx + # ebx = in->write + 8b/copy 0/mod/indirect 6/rm32/esi . . . 3/r32/ebx . . # copy *esi to ebx +$skip-chars-matching-whitespace:loop: + # if (in->read >= in->write) break + 39/compare 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx . . # compare ecx with ebx + 7d/jump-if->= $skip-chars-matching-whitespace:end/disp8 + # eax = in->data[in->read] + 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax + 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/AL 0xc/disp8 . # copy byte at *(esi+ecx+12) to AL + # if (eax == ' ') goto body + 3d/compare-eax-and 0x20/imm32/space + 74/jump-if-= $skip-chars-matching-whitespace:body/disp8 + # if (eax == '\n') goto body + 3d/compare-eax-and 0x0a/imm32/newline + 74/jump-if-= $skip-chars-matching-whitespace:body/disp8 + # if (eax == '\t') goto body + 3d/compare-eax-and 0x09/imm32/tab + 74/jump-if-= $skip-chars-matching-whitespace:body/disp8 + # if (eax != '\r') break + 3d/compare-eax-and 0x0d/imm32/cr + 75/jump-if-!= $skip-chars-matching-whitespace:end/disp8 +$skip-chars-matching-whitespace:body: + # ++in->read + 41/increment-ecx + eb/jump $skip-chars-matching-whitespace:loop/disp8 +$skip-chars-matching-whitespace:end: + # persist in->read + 89/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy ecx to *(esi+4) + # . restore registers + 5e/pop-to-esi + 5b/pop-to-ebx + 59/pop-to-ecx + 58/pop-to-eax + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-chars-matching-whitespace: + # 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 + # write(_test-stream, " \nab") + # . . push args + 68/push " \nab"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # skip-chars-matching-whitespace(_test-stream) + # . . push args + 68/push _test-stream/imm32 + # . . call + e8/call skip-chars-matching-whitespace/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(_test-stream->read, 2, msg) + # . . push args + 68/push "F - test-skip-chars-matching-whitespace"/imm32 + 68/push 2/imm32 + # . . push *_test-stream->read + b8/copy-to-eax _test-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +# minor fork of 'skip-chars-matching' +skip-chars-not-matching: # in: (addr stream byte), delimiter: byte + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 50/push-eax + 51/push-ecx + 52/push-edx + 53/push-ebx + 56/push-esi + # esi = in + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi + # ecx = in->read + 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx + # ebx = in->write + 8b/copy 0/mod/indirect 6/rm32/esi . . . 3/r32/ebx . . # copy *esi to ebx + # edx = delimiter + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx +$skip-chars-not-matching:loop: + # if (in->read >= in->write) break + 39/compare 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx . . # compare ecx with ebx + 7d/jump-if->= $skip-chars-not-matching:end/disp8 + # eax = in->data[in->read] + 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax + 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/AL 0xc/disp8 . # copy byte at *(esi+ecx+12) to AL + # if (eax == delimiter) break + 39/compare 3/mod/direct 0/rm32/eax . . . 2/r32/edx . . # compare eax and edx + 74/jump-if-= $skip-chars-not-matching:end/disp8 + # ++in->read + 41/increment-ecx + eb/jump $skip-chars-not-matching:loop/disp8 +$skip-chars-not-matching:end: + # persist in->read + 89/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy ecx to *(esi+4) + # . restore registers + 5e/pop-to-esi + 5b/pop-to-ebx + 5a/pop-to-edx + 59/pop-to-ecx + 58/pop-to-eax + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-chars-not-matching: + # 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 + # write(_test-stream, "ab ") + # . . push args + 68/push "ab "/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # skip-chars-not-matching(_test-stream, 0x20/space) + # . . push args + 68/push 0x20/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call skip-chars-not-matching/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(_test-stream->read, 2, msg) + # . . push args + 68/push "F - test-skip-chars-not-matching"/imm32 + 68/push 2/imm32 + # . . push *_test-stream->read + b8/copy-to-eax _test-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +test-skip-chars-not-matching-none: + # 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 + # write(_test-stream, " ab") + # . . push args + 68/push " ab"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # skip-chars-not-matching(_test-stream, 0x20/space) + # . . push args + 68/push 0x20/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call skip-chars-not-matching/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(_test-stream->read, 0, msg) + # . . push args + 68/push "F - test-skip-chars-not-matching-none"/imm32 + 68/push 0/imm32 + # . . push *_test-stream->read + b8/copy-to-eax _test-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +test-skip-chars-not-matching-all: + # 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 + # write(_test-stream, "ab") + # . . push args + 68/push "ab"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # skip-chars-not-matching(_test-stream, 0x20/space) + # . . push args + 68/push 0x20/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call skip-chars-not-matching/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(_test-stream->read, 2, msg) + # . . push args + 68/push "F - test-skip-chars-not-matching-all"/imm32 + 68/push 2/imm32 + # . . push *_test-stream->read + b8/copy-to-eax _test-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +skip-chars-not-matching-whitespace: # in: (addr stream byte) + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 50/push-eax + 51/push-ecx + 53/push-ebx + 56/push-esi + # esi = in + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi + # ecx = in->read + 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx + # ebx = in->write + 8b/copy 0/mod/indirect 6/rm32/esi . . . 3/r32/ebx . . # copy *esi to ebx +$skip-chars-not-matching-whitespace:loop: + # if (in->read >= in->write) break + 39/compare 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx . . # compare ecx with ebx + 7d/jump-if->= $skip-chars-not-matching-whitespace:end/disp8 + # eax = in->data[in->read] + 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax + 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/AL 0xc/disp8 . # copy byte at *(esi+ecx+12) to AL + # if (eax == ' ') break + 3d/compare-eax-and 0x20/imm32/space + 74/jump-if-= $skip-chars-not-matching-whitespace:end/disp8 + # if (eax == '\n') break + 3d/compare-eax-and 0x0a/imm32/newline + 74/jump-if-= $skip-chars-not-matching-whitespace:end/disp8 + # if (eax == '\t') break + 3d/compare-eax-and 0x09/imm32/tab + 74/jump-if-= $skip-chars-not-matching-whitespace:end/disp8 + # if (eax == '\r') break + 3d/compare-eax-and 0x0d/imm32/cr + 74/jump-if-= $skip-chars-not-matching-whitespace:end/disp8 + # ++in->read + 41/increment-ecx + eb/jump $skip-chars-not-matching-whitespace:loop/disp8 +$skip-chars-not-matching-whitespace:end: + # persist in->read + 89/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy ecx to *(esi+4) + # . restore registers + 5e/pop-to-esi + 5b/pop-to-ebx + 59/pop-to-ecx + 58/pop-to-eax + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-chars-not-matching-whitespace: + # 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 + # write(_test-stream, "ab\n") + # . . push args + 68/push "ab\n"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # skip-chars-not-matching-whitespace(_test-stream) + # . . push args + 68/push _test-stream/imm32 + # . . call + e8/call skip-chars-not-matching-whitespace/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(_test-stream->read, 2, msg) + # . . push args + 68/push "F - test-skip-chars-not-matching-whitespace"/imm32 + 68/push 2/imm32 + # . . push *_test-stream->read + b8/copy-to-eax _test-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +skip-chars-matching-in-slice: # curr: (addr byte), end: (addr byte), delimiter: byte -> curr/eax + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 51/push-ecx + 52/push-edx + 53/push-ebx + # eax = curr + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax + # ecx = end + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx + # edx = delimiter + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0x10/disp8 . # copy *(ebp+16) to edx + # var c/ebx: byte = 0 + 31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx +$skip-chars-matching-in-slice:loop: + # if (curr >= end) break + 39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx + 73/jump-if-addr>= $skip-chars-matching-in-slice:end/disp8 + # c = *curr + 8a/copy-byte 0/mod/indirect 0/rm32/eax . . . 3/r32/BL . . # copy byte at *eax to BL + # if (c != delimiter) break + 39/compare 3/mod/direct 3/rm32/ebx . . . 2/r32/edx . . # compare ebx and edx + 75/jump-if-!= $skip-chars-matching-in-slice:end/disp8 + # ++curr + 40/increment-eax + eb/jump $skip-chars-matching-in-slice:loop/disp8 +$skip-chars-matching-in-slice:end: + # . restore registers + 5b/pop-to-ebx + 5a/pop-to-edx + 59/pop-to-ecx + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-chars-matching-in-slice: + # (eax..ecx) = " ab" + b8/copy-to-eax " ab"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-chars-matching-in-slice(eax, ecx, 0x20/space) + # . . push args + 68/push 0x20/imm32/space + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-chars-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # check-ints-equal(ecx-eax, 2, msg) + # . . push args + 68/push "F - test-skip-chars-matching-in-slice"/imm32 + 68/push 2/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +test-skip-chars-matching-in-slice-none: + # (eax..ecx) = "ab" + b8/copy-to-eax "ab"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-chars-matching-in-slice(eax, ecx, 0x20/space) + # . . push args + 68/push 0x20/imm32/space + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-chars-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # check-ints-equal(ecx-eax, 2, msg) + # . . push args + 68/push "F - test-skip-chars-matching-in-slice-none"/imm32 + 68/push 2/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +skip-chars-matching-whitespace-in-slice: # curr: (addr byte), end: (addr byte) -> curr/eax + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 51/push-ecx + 53/push-ebx + # eax = curr + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax + # ecx = end + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx + # var c/ebx: byte = 0 + 31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx +$skip-chars-matching-whitespace-in-slice:loop: + # if (curr >= end) break + 39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx + 0f 83/jump-if-addr>= $skip-chars-matching-in-slice:end/disp32 + # c = *curr + 8a/copy-byte 0/mod/indirect 0/rm32/eax . . . 3/r32/BL . . # copy byte at *eax to BL + # if (c == ' ') goto body + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x20/imm32/space # compare ebx + 74/jump-if-= $skip-chars-matching-whitespace-in-slice:body/disp8 + # if (c == '\n') goto body + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x0a/imm32/newline # compare ebx + 74/jump-if-= $skip-chars-matching-whitespace-in-slice:body/disp8 + # if (c == '\t') goto body + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x09/imm32/tab # compare ebx + 74/jump-if-= $skip-chars-matching-whitespace-in-slice:body/disp8 + # if (c != '\r') break + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x0d/imm32/cr # compare ebx + 75/jump-if-!= $skip-chars-matching-whitespace-in-slice:end/disp8 +$skip-chars-matching-whitespace-in-slice:body: + # ++curr + 40/increment-eax + eb/jump $skip-chars-matching-whitespace-in-slice:loop/disp8 +$skip-chars-matching-whitespace-in-slice:end: + # . restore registers + 5b/pop-to-ebx + 59/pop-to-ecx + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-chars-matching-whitespace-in-slice: + # (eax..ecx) = " \nab" + b8/copy-to-eax " \nab"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-chars-matching-whitespace-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-chars-matching-whitespace-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 2, msg) + # . . push args + 68/push "F - test-skip-chars-matching-whitespace-in-slice"/imm32 + 68/push 2/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +# minor fork of 'skip-chars-matching-in-slice' +skip-chars-not-matching-in-slice: # curr: (addr byte), end: (addr byte), delimiter: byte -> curr/eax + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 51/push-ecx + 52/push-edx + 53/push-ebx + # eax = curr + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax + # ecx = end + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx + # edx = delimiter + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0x10/disp8 . # copy *(ebp+16) to edx + # var c/ebx: byte = 0 + 31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx +$skip-chars-not-matching-in-slice:loop: + # if (curr >= end) break + 39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx + 73/jump-if-addr>= $skip-chars-not-matching-in-slice:end/disp8 + # c = *curr + 8a/copy-byte 0/mod/indirect 0/rm32/eax . . . 3/r32/BL . . # copy byte at *eax to BL + # if (c == delimiter) break + 39/compare 3/mod/direct 3/rm32/ebx . . . 2/r32/edx . . # compare ebx and edx + 74/jump-if-= $skip-chars-not-matching-in-slice:end/disp8 + # ++curr + 40/increment-eax + eb/jump $skip-chars-not-matching-in-slice:loop/disp8 +$skip-chars-not-matching-in-slice:end: + # . restore registers + 5b/pop-to-ebx + 5a/pop-to-edx + 59/pop-to-ecx + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-chars-not-matching-in-slice: + # (eax..ecx) = "ab " + b8/copy-to-eax "ab "/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-chars-not-matching-in-slice(eax, ecx, 0x20/space) + # . . push args + 68/push 0x20/imm32/space + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-chars-not-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # check-ints-equal(ecx-eax, 1, msg) + # . . push args + 68/push "F - test-skip-chars-not-matching-in-slice"/imm32 + 68/push 1/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +test-skip-chars-not-matching-in-slice-none: + # (eax..ecx) = " ab" + b8/copy-to-eax " ab"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-chars-not-matching-in-slice(eax, ecx, 0x20/space) + # . . push args + 68/push 0x20/imm32/space + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-chars-not-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # check-ints-equal(ecx-eax, 3, msg) + # . . push args + 68/push "F - test-skip-chars-not-matching-in-slice-none"/imm32 + 68/push 3/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +test-skip-chars-not-matching-in-slice-all: + # (eax..ecx) = "ab" + b8/copy-to-eax "ab"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-chars-not-matching-in-slice(eax, ecx, 0x20/space) + # . . push args + 68/push 0x20/imm32/space + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-chars-not-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # check-ints-equal(ecx-eax, 0, msg) + # . . push args + 68/push "F - test-skip-chars-not-matching-in-slice-all"/imm32 + 68/push 0/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +skip-chars-not-matching-whitespace-in-slice: # curr: (addr byte), end: (addr byte) -> curr/eax + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 51/push-ecx + 53/push-ebx + # eax = curr + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax + # ecx = end + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx + # var c/ebx: byte = 0 + 31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx +$skip-chars-not-matching-whitespace-in-slice:loop: + # if (curr >= end) break + 39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx + 0f 83/jump-if-addr>= $skip-chars-not-matching-in-slice:end/disp32 + # c = *curr + 8a/copy-byte 0/mod/indirect 0/rm32/eax . . . 3/r32/BL . . # copy byte at *eax to BL + # if (c == ' ') break + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x20/imm32/space # compare ebx + 74/jump-if-= $skip-chars-not-matching-whitespace-in-slice:end/disp8 + # if (c == '\n') break + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x0a/imm32/newline # compare ebx + 74/jump-if-= $skip-chars-not-matching-whitespace-in-slice:end/disp8 + # if (c == '\t') break + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x09/imm32/tab # compare ebx + 74/jump-if-= $skip-chars-not-matching-whitespace-in-slice:end/disp8 + # if (c == '\r') break + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x0d/imm32/cr # compare ebx + 74/jump-if-= $skip-chars-not-matching-whitespace-in-slice:end/disp8 + # ++curr + 40/increment-eax + eb/jump $skip-chars-not-matching-whitespace-in-slice:loop/disp8 +$skip-chars-not-matching-whitespace-in-slice:end: + # . restore registers + 5b/pop-to-ebx + 59/pop-to-ecx + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-chars-not-matching-whitespace-in-slice: + # (eax..ecx) = "ab\n" + b8/copy-to-eax "ab\n"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-chars-not-matching-whitespace-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-chars-not-matching-whitespace-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 1, msg) + # . . push args + 68/push "F - test-skip-chars-not-matching-whitespace-in-slice"/imm32 + 68/push 1/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # end + c3/return + +# update line->read to end of string literal surrounded by double quotes +# line->read must start out at a double-quote +skip-string: # line: (addr stream byte) + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 50/push-eax + 51/push-ecx + 52/push-edx + # ecx = line + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 1/r32/ecx 8/disp8 . # copy *(ebp+8) to ecx + # eax = skip-string-in-slice(&line->data[line->read], &line->data[line->write]) + # . . push &line->data[line->write] + 8b/copy 1/mod/*+disp8 1/rm32/ecx . . 2/r32/edx 8/disp8 . # copy *(ecx+8) to edx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ecx 2/index/edx . 2/r32/edx 0xc/disp8 . # copy ecx+edx+12 to edx + 52/push-edx + # . . push &line->data[line->read] + 8b/copy 1/mod/*+disp8 1/rm32/ecx . . 2/r32/edx 4/disp8 . # copy *(ecx+4) to edx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ecx 2/index/edx . 2/r32/edx 0xc/disp8 . # copy ecx+edx+12 to edx + 52/push-edx + # . . call + e8/call skip-string-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # line->read = eax - line->data + 29/subtract 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # subtract ecx from eax + 2d/subtract-from-eax 0xc/imm32 + 89/copy 1/mod/*+disp8 1/rm32/ecx . . 0/r32/eax 4/disp8 . # copy eax to *(ecx+4) +$skip-string:end: + # . restore registers + 5a/pop-to-edx + 59/pop-to-ecx + 58/pop-to-eax + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-string: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup + # . clear-stream(_test-input-stream) + # . . push args + 68/push _test-input-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 + # . write(_test-input-stream, "\"abc\" def") + # . indices: 0123 45 + # . . push args + 68/push "\"abc\" def"/imm32 + 68/push _test-input-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # precondition: line->read == 0 + # . . push args + 68/push "F - test-skip-string/precondition"/imm32 + 68/push 0/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # skip-string(_test-input-stream) + # . . push args + 68/push _test-input-stream/imm32 + # . . call + e8/call skip-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(line->read, 5, msg) + # . . push args + 68/push "F - test-skip-string"/imm32 + 68/push 5/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-string-ignores-spaces: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup + # . clear-stream(_test-input-stream) + # . . push args + 68/push _test-input-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 + # . write(_test-input-stream, "\"a b\"/yz") + # . indices: 0123 45 + # . . push args + 68/push "\"a b\"/yz"/imm32 + 68/push _test-input-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # precondition: line->read == 0 + # . . push args + 68/push "F - test-skip-string-ignores-spaces/precondition"/imm32 + 68/push 0/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # skip-string(_test-input-stream) + # . . push args + 68/push _test-input-stream/imm32 + # . . call + e8/call skip-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(line->read, 5, msg) + # . . push args + 68/push "F - test-skip-string-ignores-spaces"/imm32 + 68/push 5/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-string-ignores-escapes: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup + # . clear-stream(_test-input-stream) + # . . push args + 68/push _test-input-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 + # . write(_test-input-stream, "\"a\\\"b\"/yz") + # . indices: 01 2 34 56 + # . . push args + 68/push "\"a\\\"b\"/yz"/imm32 + 68/push _test-input-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # precondition: line->read == 0 + # . . push args + 68/push "F - test-skip-string-ignores-escapes/precondition"/imm32 + 68/push 0/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # skip-string(_test-input-stream) + # . . push args + 68/push _test-input-stream/imm32 + # . . call + e8/call skip-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(line->read, 6, msg) + # . . push args + 68/push "F - test-skip-string-ignores-escapes"/imm32 + 68/push 6/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-string-works-from-mid-stream: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup + # . clear-stream(_test-input-stream) + # . . push args + 68/push _test-input-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 + # . write(_test-input-stream, "0 \"a\\\"b\"/yz") + # . indices: 01 2 34 56 + # . . push args + 68/push "0 \"a\\\"b\"/yz"/imm32 + 68/push _test-input-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # precondition: line->read == 2 + b8/copy-to-eax _test-input-stream/imm32 + c7 0/subop/copy 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 2/imm32 # copy to *(eax+4) + # skip-string(_test-input-stream) + # . . push args + 68/push _test-input-stream/imm32 + # . . call + e8/call skip-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(line->read, 8, msg) + # . . push args + 68/push "F - test-skip-string-works-from-mid-stream"/imm32 + 68/push 8/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +skip-string-in-slice: # curr: (addr byte), end: (addr byte) -> new_curr/eax + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 51/push-ecx + 52/push-edx + 53/push-ebx + # ecx = curr + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 1/r32/ecx 8/disp8 . # copy *(ebp+8) to ecx + # edx = end + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx + # var c/eax: byte = 0 + 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax + # skip initial dquote + 41/increment-ecx +$skip-string-in-slice:loop: + # if (curr >= end) return curr + 39/compare 3/mod/direct 1/rm32/ecx . . . 2/r32/edx . . # compare ecx with edx + 73/jump-if-addr>= $skip-string-in-slice:return-curr/disp8 + # c = *curr + 8a/copy-byte 0/mod/indirect 1/rm32/ecx . . . 0/r32/AL . . # copy byte at *ecx to AL +$skip-string-in-slice:dquote: + # if (c == '"') break + 3d/compare-eax-and 0x22/imm32/double-quote + 74/jump-if-= $skip-string-in-slice:break/disp8 +$skip-string-in-slice:check-for-escape: + # if (c == '\') escape next char + 3d/compare-eax-and 0x5c/imm32/backslash + 75/jump-if-!= $skip-string-in-slice:continue/disp8 +$skip-string-in-slice:escape: + 41/increment-ecx +$skip-string-in-slice:continue: + # ++curr + 41/increment-ecx + eb/jump $skip-string-in-slice:loop/disp8 +$skip-string-in-slice:break: + # skip final dquote + 41/increment-ecx +$skip-string-in-slice:return-curr: + # return curr + 89/copy 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # copy ecx to eax +$skip-string-in-slice:end: + # . restore registers + 5b/pop-to-ebx + 5a/pop-to-edx + 59/pop-to-ecx + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-string-in-slice: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup: (eax..ecx) = "\"abc\" def" + b8/copy-to-eax "\"abc\" def"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-string-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-string-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 4, msg) # number of chars remaining after the string literal + # . . push args + 68/push "F - test-skip-string-in-slice"/imm32 + 68/push 4/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-string-in-slice-ignores-spaces: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup: (eax..ecx) = "\"a b\"/yz" + b8/copy-to-eax "\"a b\"/yz"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-string-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-string-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 3, msg) # number of chars remaining after the string literal + # . . push args + 68/push "F - test-skip-string-in-slice-ignores-spaces"/imm32 + 68/push 3/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-string-in-slice-ignores-escapes: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup: (eax..ecx) = "\"a\\\"b\"/yz" + b8/copy-to-eax "\"a\\\"b\"/yz"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-string-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-string-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 3, msg) # number of chars remaining after the string literal + # . . push args + 68/push "F - test-skip-string-in-slice-ignores-escapes"/imm32 + 68/push 3/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-string-in-slice-stops-at-end: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup: (eax..ecx) = "\"abc" # unbalanced dquote + b8/copy-to-eax "\"abc"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-string-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-string-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 0, msg) # skipped to end of slice + # . . push args + 68/push "F - test-skip-string-in-slice-stops-at-end"/imm32 + 68/push 0/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +# update line->read to ')' +# line->read ends at ')' +skip-until-close-paren: # line: (addr stream byte) + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 50/push-eax + 51/push-ecx + 52/push-edx + # ecx = line + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 1/r32/ecx 8/disp8 . # copy *(ebp+8) to ecx + # eax = skip-until-close-paren-in-slice(&line->data[line->read], &line->data[line->write]) + # . . push &line->data[line->write] + 8b/copy 1/mod/*+disp8 1/rm32/ecx . . 2/r32/edx 8/disp8 . # copy *(ecx+8) to edx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ecx 2/index/edx . 2/r32/edx 0xc/disp8 . # copy ecx+edx+12 to edx + 52/push-edx + # . . push &line->data[line->read] + 8b/copy 1/mod/*+disp8 1/rm32/ecx . . 2/r32/edx 4/disp8 . # copy *(ecx+4) to edx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ecx 2/index/edx . 2/r32/edx 0xc/disp8 . # copy ecx+edx+12 to edx + 52/push-edx + # . . call + e8/call skip-until-close-paren-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # line->read = eax - line->data + 29/subtract 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # subtract ecx from eax + 2d/subtract-from-eax 0xc/imm32 + 89/copy 1/mod/*+disp8 1/rm32/ecx . . 0/r32/eax 4/disp8 . # copy eax to *(ecx+4) +$skip-until-close-paren:end: + # . restore registers + 5a/pop-to-edx + 59/pop-to-ecx + 58/pop-to-eax + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-until-close-paren: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup + # . clear-stream(_test-input-stream) + # . . push args + 68/push _test-input-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 + # . write(_test-input-stream, "*(abc) def") + # . indices: 0123 45 + # . . push args + 68/push "*(abc) def"/imm32 + 68/push _test-input-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # precondition: line->read == 0 + # . . push args + 68/push "F - test-skip-until-close-paren/precondition"/imm32 + 68/push 0/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # skip-until-close-paren(_test-input-stream) + # . . push args + 68/push _test-input-stream/imm32 + # . . call + e8/call skip-until-close-paren/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(line->read, 5, msg) + # . . push args + 68/push "F - test-skip-until-close-paren"/imm32 + 68/push 5/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-until-close-paren-ignores-spaces: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup + # . clear-stream(_test-input-stream) + # . . push args + 68/push _test-input-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 + # . write(_test-input-stream, "*(a b)/yz") + # . . push args + 68/push "*(a b)/yz"/imm32 + 68/push _test-input-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # precondition: line->read == 0 + # . . push args + 68/push "F - test-skip-until-close-paren-ignores-spaces/precondition"/imm32 + 68/push 0/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # skip-until-close-paren(_test-input-stream) + # . . push args + 68/push _test-input-stream/imm32 + # . . call + e8/call skip-until-close-paren/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(line->read, 5, msg) + # . . push args + 68/push "F - test-skip-until-close-paren-ignores-spaces"/imm32 + 68/push 5/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-until-close-paren-works-from-mid-stream: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup + # . clear-stream(_test-input-stream) + # . . push args + 68/push _test-input-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 + # . write(_test-input-stream, "0 *(a b)/yz") + # . . push args + 68/push "0 *(a b)/yz"/imm32 + 68/push _test-input-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # precondition: _test-input-stream->read == 2 + b8/copy-to-eax _test-input-stream/imm32 + c7 0/subop/copy 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 2/imm32 # copy to *(eax+4) + # skip-until-close-paren(_test-input-stream) + # . . push args + 68/push _test-input-stream/imm32 + # . . call + e8/call skip-until-close-paren/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # check-ints-equal(_test-input-stream->read, 7, msg) + # . . push args + 68/push "F - test-skip-until-close-paren-works-from-mid-stream"/imm32 + 68/push 7/imm32 + b8/copy-to-eax _test-input-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +skip-until-close-paren-in-slice: # curr: (addr byte), end: (addr byte) -> new_curr/eax: (addr byte) + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # . save registers + 51/push-ecx + 52/push-edx + # ecx = curr + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 1/r32/ecx 8/disp8 . # copy *(ebp+8) to ecx + # edx = end + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx + # var c/eax: byte = 0 + 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax + # skip initial dquote + 41/increment-ecx +$skip-until-close-paren-in-slice:loop: + # if (curr >= end) break + 39/compare 3/mod/direct 1/rm32/ecx . . . 2/r32/edx . . # compare ecx with edx + 73/jump-if-addr>= $skip-until-close-paren-in-slice:break/disp8 + # c = *curr + 8a/copy-byte 0/mod/indirect 1/rm32/ecx . . . 0/r32/AL . . # copy byte at *ecx to AL +$skip-until-close-paren-in-slice:check-close: + # if (c == ')') break + 3d/compare-eax-and 0x29/imm32/close-paren + 74/jump-if-= $skip-until-close-paren-in-slice:break/disp8 + # ++curr + 41/increment-ecx + eb/jump $skip-until-close-paren-in-slice:loop/disp8 +$skip-until-close-paren-in-slice:break: + # return curr + 89/copy 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # copy ecx to eax +$skip-until-close-paren-in-slice:end: + # . restore registers + 5a/pop-to-edx + 59/pop-to-ecx + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-until-close-paren-in-slice: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup: (eax..ecx) = "*(abc) def" + b8/copy-to-eax "*(abc) def"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-until-close-paren-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-until-close-paren-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 5, msg) # eax is at the ')' + # . . push args + 68/push "F - test-skip-until-close-paren-in-slice"/imm32 + 68/push 5/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-until-close-paren-in-slice-ignores-spaces: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup: (eax..ecx) = "*(a b)/yz" + b8/copy-to-eax "*(a b)/yz"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-until-close-paren-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-until-close-paren-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 4, msg) # eax is at the ')' + # . . push args + 68/push "F - test-skip-until-close-paren-in-slice-ignores-spaces"/imm32 + 68/push 4/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +test-skip-until-close-paren-in-slice-stops-at-end: + # . prologue + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # setup: (eax..ecx) = "*(abc" # unbalanced dquote + b8/copy-to-eax "*(abc"/imm32 + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx + 05/add-to-eax 4/imm32 + # eax = skip-until-close-paren-in-slice(eax, ecx) + # . . push args + 51/push-ecx + 50/push-eax + # . . call + e8/call skip-until-close-paren-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # check-ints-equal(ecx-eax, 0, msg) # skipped to end of slice + # . . push args + 68/push "F - test-skip-until-close-paren-in-slice-stops-at-end"/imm32 + 68/push 0/imm32 + # . . push ecx-eax + 29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx + 51/push-ecx + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +# . . vim:nowrap:textwidth=0 |