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author | Kartik Agaram <vc@akkartik.com> | 2019-07-27 16:01:55 -0700 |
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committer | Kartik Agaram <vc@akkartik.com> | 2019-07-27 17:47:59 -0700 |
commit | 6e1eeeebfb453fa7c871869c19375ce60fbd7413 (patch) | |
tree | 539c4a3fdf1756ae79770d5c4aaf6366f1d1525e /apps/dquotes.subx | |
parent | 8846a7f85cc04b77b2fe8a67b6d317723437b00c (diff) | |
download | mu-6e1eeeebfb453fa7c871869c19375ce60fbd7413.tar.gz |
5485 - promote SubX to top-level
Diffstat (limited to 'apps/dquotes.subx')
-rw-r--r-- | apps/dquotes.subx | 2757 |
1 files changed, 2757 insertions, 0 deletions
diff --git a/apps/dquotes.subx b/apps/dquotes.subx new file mode 100644 index 00000000..6848ad19 --- /dev/null +++ b/apps/dquotes.subx @@ -0,0 +1,2757 @@ +# Translate literal strings within double quotes. +# Replace them with references to new variables in the data segment. +# +# To run (from the subx/ directory): +# $ ./subx translate *.subx apps/dquotes.subx -o apps/dquotes +# $ cat x +# == code +# ab "cd ef"/imm32 +# $ cat x |./subx run apps/dquotes +# == code +# ab __string1/imm32 +# == data +# __string1: +# 5/imm32 +# 0x63/c 0x64/d 0x20/ 0x65/e 0x66/f + +== 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 + +Entry: + # initialize heap + # . Heap = new-segment(Heap-size) + # . . push args + 68/push Heap/imm32 + ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Heap-size/disp32 # push *Heap-size + # . . call + e8/call new-segment/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + + # run tests if necessary, convert stdin if not + # . prolog + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # - if argc > 1 and argv[1] == "test", then return run_tests() + # . argc > 1 + 81 7/subop/compare 1/mod/*+disp8 5/rm32/EBP . . . . 0/disp8 1/imm32 # compare *EBP + 7e/jump-if-lesser-or-equal $run-main/disp8 + # . argv[1] == "test" + # . . push args + 68/push "test"/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call kernel-string-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . check result + 3d/compare-EAX-and 1/imm32 + 75/jump-if-not-equal $run-main/disp8 + # . run-tests() + e8/call run-tests/disp32 + 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/EBX Num-test-failures/disp32 # copy *Num-test-failures to EBX + eb/jump $main:end/disp8 +$run-main: + # - otherwise convert stdin + # var ed/EAX : exit-descriptor + 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # subtract from ESP + 89/copy 3/mod/direct 0/rm32/EAX . . . 4/r32/ESP . . # copy ESP to EAX + # configure ed to really exit() + # . ed->target = 0 + c7 0/subop/copy 0/mod/direct 0/rm32/EAX . . . . . 0/imm32 # copy to *EAX + # return convert(Stdin, 1/stdout, 2/stderr, ed) + # . . push args + 50/push-EAX/ed + 68/push Stderr/imm32 + 68/push Stdout/imm32 + 68/push Stdin/imm32 + # . . call + e8/call convert/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP + # . syscall(exit, 0) + bb/copy-to-EBX 0/imm32 +$main:end: + b8/copy-to-EAX 1/imm32/exit + cd/syscall 0x80/imm8 + +# conceptual hierarchy within a line: +# line = words separated by ' ', maybe followed by comment starting with '#' +# word = datum until '/', then 0 or more metadata separated by '/' + +convert: # in : (address buffered-file), out : (address buffered-file) -> <void> + # pseudocode: + # var line = new-stream(512, 1) + # var new-data-segment = new-stream(Heap, Segment-size, 1) + # write(new-data-segment, "== data\n") + # while true + # clear-stream(line) + # read-line-buffered(in, line) + # if (line->write == 0) break # end of file + # while true + # var word-slice = next-word-or-string(line) + # if slice-empty?(word-slice) # end of line + # break + # if slice-starts-with?(word-slice, "#") # comment + # continue + # if slice-starts-with?(word-slice, '"') # string literal <== what we're here for + # process-string-literal(word-slice, out, new-data-segment) + # else + # write-slice-buffered(out, word-slice) + # write(out, " ") + # write(out, "\n\n") + # write-stream-data(out, new-data-segment) + # flush(out) + # + # . prolog + 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 + 57/push-EDI + # var line/ECX : (address stream byte) = stream(512) + 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x200/imm32 # subtract from ESP + 68/push 0x200/imm32/length + 68/push 0/imm32/read + 68/push 0/imm32/write + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # var word-slice/EDX = {0, 0} + 68/push 0/imm32/end + 68/push 0/imm32/start + 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX + # new-data-segment/EDI = new-stream(Heap, Segment-size, 1) + # . EAX = new-stream(Heap, Segment-size, 1) + # . . push args + 68/push 1/imm32 + ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Segment-size/disp32 # push *Segment-size + 68/push Heap/imm32 + # . . call + e8/call new-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . EDI = EAX + 89/copy 3/mod/direct 7/rm32/EDI . . . 0/r32/EAX . . # copy EAX to EDI + # write(new-data-segment, "== data\n") + # . . push args + 68/push "== data\n"/imm32 + 57/push-EDI + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +$convert:line-loop: + # clear-stream(line) + # . . push args + 51/push-ECX + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # read-line-buffered(in, line) + # . . push args + 51/push-ECX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call read-line-buffered/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +$convert:check0: + # if (line->write == 0) break + 81 7/subop/compare 0/mod/indirect 1/rm32/ECX . . . . . 0/imm32 # compare *ECX + 0f 84/jump-if-equal $convert:break/disp32 +$convert:word-loop: + # next-word-or-string(line, word-slice) + # . . push args + 52/push-EDX + 51/push-ECX + # . . call + e8/call next-word-or-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +$convert:check1: + # if (slice-empty?(word-slice)) break + # . EAX = slice-empty?(word-slice) + # . . push args + 52/push-EDX + # . . call + e8/call slice-empty?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # . if (EAX != 0) break + 3d/compare-EAX-and 0/imm32 + 0f 85/jump-if-not-equal $convert:next-line/disp32 +$convert:check-for-comment: + # if (slice-starts-with?(word-slice, "#")) continue + # . start/ESI = word-slice->start + 8b/copy 0/mod/indirect 2/rm32/EDX . . . 6/r32/ESI . . # copy *EDX to ESI + # . c/EAX = *start + 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX + 8a/copy-byte 0/mod/indirect 6/rm32/ESI . . . 0/r32/AL . . # copy byte at *ESI to AL + # . if (EAX == '#') continue + 3d/compare-EAX-and 0x23/imm32/hash + 74/jump-if-equal $convert:word-loop/disp8 +$convert:check-for-string-literal: + 3d/compare-EAX-and 0x22/imm32/dquote + 75/jump-if-not-equal $convert:regular-word/disp8 +$convert:string-literal: + # process-string-literal(word-slice, out, new-data-segment) + # . . push args + 57/push-EDI + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + 52/push-EDX + # . . call + e8/call process-string-literal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # continue + eb/jump $convert:next-word/disp8 +$convert:regular-word: + # write-slice-buffered(out, word-slice) + # . . push args + 52/push-EDX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call write-slice-buffered/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # fall through +$convert:next-word: + # write-buffered(out, " ") + # . . push args + 68/push " "/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call write-buffered/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # loop + eb/jump $convert:word-loop/disp8 +$convert:next-line: + # write-buffered(out, "\n") + # . . push args + 68/push Newline/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call write-buffered/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # loop + e9/jump $convert:line-loop/disp32 +$convert:break: + # write-stream-data(out, new-data-segment) + # . . push args + 57/push-EDI + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call write-stream-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # flush(out) + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call flush/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP +$convert:end: + # . reclaim locals + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x214/imm32 # add to ESP + # . restore registers + 5f/pop-to-EDI + 5e/pop-to-ESI + 5b/pop-to-EBX + 5a/pop-to-EDX + 59/pop-to-ECX + 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 + +# Write out 'string-literal' in a new format to 'out-segment', assign it a new +# label, and write the new label out to 'out'. +process-string-literal: # string-literal : (address slice), out : (address buffered-file), out-segment : (address stream) + # pseudocode: + # print(out-segment, "_string#{Next-string-literal}:\n") + # emit-string-literal-data(out-segment, string-literal) + # print(out, "_string#{Next-string-literal}") + # emit-metadata(out, string-literal) + # ++ *Next-string-literal + # + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers + 51/push-ECX + # var int32-stream/ECX = stream(10) # number of decimal digits a 32-bit number can have + 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0xa/imm32 # subtract from ESP + 68/push 0xa/imm32/decimal-digits-in-32bit-number + 68/push 0/imm32/read + 68/push 0/imm32/write + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # print(out-segment, "_string#{Next-string-literal}:\n") + # . write(out-segment, "_string") + # . . push args + 68/push "_string"/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . print-int32-decimal(out-segment, *Next-string-literal) + # . . push args + ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Next-string-literal/disp32 # push *Next-string-literal + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) + # . . call + e8/call print-int32-decimal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . write(out-segment, ":\n") + # . . push args + 68/push ":\n"/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # emit-string-literal-data(out-segment, string-literal) + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x8/disp8 . # push *(EBP+8) + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) + # . . call + e8/call emit-string-literal-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # write(out-segment, "\n") + # . . push args + 68/push Newline/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # print(out, "_string#{Next-string-literal}") + # . write-buffered(out, "_string") + # . . push args + 68/push "_string"/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call write-buffered/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . print-int32-decimal(int32-stream, *Next-string-literal) + # . . push args + ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Next-string-literal/disp32 # push *Next-string-literal + 51/push-ECX + # . . call + e8/call print-int32-decimal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . write-stream-data(out, int32-stream) + # . . push args + 51/push-ECX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call write-stream-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # emit-metadata(out, string-literal) + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + # . . call + e8/call emit-metadata/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # ++ *Next-string-literal + ff 0/subop/increment 0/mod/indirect 5/rm32/.disp32 . . . Next-string-literal/disp32 # increment *Num-test-failures +$process-string-literal:end: + # . reclaim locals + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x16/imm32 # add to ESP + # . restore registers + 59/pop-to-ECX + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-convert-is-idempotent-by-default: + # . prolog + 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 + # . clear-stream(_test-input-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-input-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 + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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-output-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-output-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 (meta comments in parens) + # # comment 1 + # # comment 2 indented + # == code 0x1 (new segment) + # # comment 3 inside a segment + # 1 + # (empty line) + # 2 3 # comment 4 inline with other contents + # == data 0x2 (new segment) + # 4 5/imm32 + # . write(_test-input-stream, "# comment 1\n") + # . . push args + 68/push "# comment 1\n"/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 + # . write(_test-input-stream, " # comment 2 indented\n") + # . . push args + 68/push " # comment 2 indented\n"/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 + # . write(_test-input-stream, "== code 0x1\n") + # . . push args + 68/push "== code 0x1\n"/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 + # . write(_test-input-stream, "# comment 3 inside a segment\n") + # . . push args + 68/push "# comment 3 inside a segment\n"/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 + # . write(_test-input-stream, "1\n") + # . . push args + 68/push "1\n"/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 + # . write(_test-input-stream, "\n") # empty line + # . . push args + 68/push "\n"/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 + # . write(_test-input-stream, "2 3 # comment 4 inline with other contents\n") + # . . push args + 68/push "2 3 # comment 4 inline with other contents\n"/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 + # . write(_test-input-stream, "== data 0x2\n") + # . . push args + 68/push "== data 0x2\n"/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 + # . write(_test-input-stream, "4 5/imm32\n") + # . . push args + 68/push "4 5/imm32\n"/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 + # convert(_test-input-buffered-file, _test-output-buffered-file) + # . . push args + 68/push _test-output-buffered-file/imm32 + 68/push _test-input-buffered-file/imm32 + # . . call + e8/call convert/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . flush(_test-output-buffered-file) + # . . push args + 68/push _test-output-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 output + # (comment dropped for now) + # (comment dropped for now) + # == code 0x1 + # (comment dropped for now) + # 1 + # (comment dropped for now) + # 2 3 + # == data 0x2 + # 4 5/imm32 + # We don't care right now what exactly happens to comments. Trailing spaces are also minor details. +#? # dump output {{{ +#? # . write(2/stderr, "result: ^") +#? # . . push args +#? 68/push "result: ^"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write-stream(2/stderr, _test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write(2/stderr, "$\n") +#? # . . push args +#? 68/push "$\n"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # }}} + # . check-next-stream-line-equal(_test-output-stream, "", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/0"/imm32 + 68/push ""/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/1"/imm32 + 68/push ""/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "== code 0x1 ", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/2"/imm32 + 68/push "== code 0x1 "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/3"/imm32 + 68/push ""/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "1 ", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/4"/imm32 + 68/push "1 "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/5"/imm32 + 68/push ""/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "2 3 ", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/6"/imm32 + 68/push "2 3 "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "== data 0x2 ", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/7"/imm32 + 68/push "== data 0x2 "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "4 5/imm32 ", msg) + # . . push args + 68/push "F - test-convert-is-idempotent-by-default/8"/imm32 + 68/push "4 5/imm32 "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-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 + +test-convert-processes-string-literals: + # . prolog + 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 + # . clear-stream(_test-input-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-input-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 + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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-output-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-output-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 (meta comments in parens) + # == code (new segment) + # 1 "a"/x + # 2 "bc"/y + 68/push "== code 0x1\n"/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 + # . write(_test-input-stream, "1 \"a\"/x\n") + # . . push args + 68/push "1 \"a\"/x\n"/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 + # . write(_test-input-stream, "2 \"bc\"/y\n") + # . . push args + 68/push "2 \"bc\"/y\n"/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 + # convert(_test-input-buffered-file, _test-output-buffered-file) + # . . push args + 68/push _test-output-buffered-file/imm32 + 68/push _test-input-buffered-file/imm32 + # . . call + e8/call convert/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . flush(_test-output-buffered-file) + # . . push args + 68/push _test-output-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 output + # == code 0x1 + # 1 _string1/x + # 2 _string2/y + # == data + # _string1: + # 1/imm32 61/a + # _string2: + # 2/imm32 62/b 63/c + # We don't care right now what exactly happens to comments. Trailing spaces are also minor details. + # + # Open question: how to make this check more robust. + # We don't actually care what the auto-generated string variables are + # called. We just want to make sure instructions using string literals + # switch to a string variable with the right value. + # (Modifying string literals completely off the radar for now.) +#? # dump output {{{ +#? # . write(2/stderr, "result: ^") +#? # . . push args +#? 68/push "result: ^"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write-stream(2/stderr, _test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write(2/stderr, "$\n") +#? # . . push args +#? 68/push "$\n"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . rewind-stream(_test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? # . . call +#? e8/call rewind-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP +#? # }}} + # . check-next-stream-line-equal(_test-output-stream, "== code 0x1 ", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/0"/imm32 + 68/push "== code 0x1 "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "1 _string1/x ", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/1"/imm32 + 68/push "1 _string1/x "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "2 _string2/y ", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/2"/imm32 + 68/push "2 _string2/y "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "== data", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/3"/imm32 + 68/push "== data"/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "_string1: ", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/4"/imm32 + 68/push "_string1:"/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "1/imm32 61/a ", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/5"/imm32 + 68/push "0x00000001/imm32 61/a "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "_string2: ", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/6"/imm32 + 68/push "_string2:"/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . check-next-stream-line-equal(_test-output-stream, "2/imm32 62/b 63/c ", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/7"/imm32 + 68/push "0x00000002/imm32 62/b 63/c "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-next-stream-line-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 + +# generate the data segment contents byte by byte for a given slice +emit-string-literal-data: # out : (address stream), word : (address slice) + # pseudocode + # len = string-length-at-start-of-slice(word->start, word->end) + # print(out, "#{len}/imm32 ") + # curr = word->start + # ++curr # skip '"' + # while true + # if (curr >= word->end) break + # c = *curr + # if (c == '"') break + # if (c == '\') { + # ++curr + # c = *curr + # if (c == 'n') + # c = newline + # } + # append-byte-hex(out, c) + # if c is alphanumeric: + # write(out, "/") + # append-byte(out, c) + # write(out, " ") + # ++curr + # + # . prolog + 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 + 56/push-ESI + # ESI = word + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI + # curr/EDX = word->start + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX + # max/ESI = word->end + 8b/copy 1/mod/*+disp8 6/rm32/ESI . . . 6/r32/ESI 4/disp8 . # copy *(ESI+4) to ESI +$emit-string-literal-data:emit-length: + # len/EAX = string-length-at-start-of-slice(word->start, word->end) + # . . push args + 56/push-ESI + 52/push-EDX + # . . call + e8/call string-length-at-start-of-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # print(out, "#{len}/imm32 ") + # . print-int32(out, len) + # . . push args + 50/push-EAX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call print-int32/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . write(out, "/imm32 ") + # . . push args + 68/push "/imm32 "/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +$emit-string-literal-data:loop-init: + # ++curr # skip initial '"' + 42/increment-EDX + # c/ECX = 0 + 31/xor 3/mod/direct 1/rm32/ECX . . . 1/r32/ECX . . # clear ECX +$emit-string-literal-data:loop: + # if (curr >= max) break + 39/compare 3/mod/direct 2/rm32/EDX . . . 6/r32/ESI . . # compare EDX with ESI + 0f 83/jump-if-greater-or-equal-unsigned $emit-string-literal-data:end/disp32 + # CL = *curr + 8a/copy-byte 0/mod/indirect 2/rm32/EDX . . . 1/r32/CL . . # copy byte at *EDX to CL + # if (c == '"') break + 81 7/subop/compare 3/mod/direct 1/rm32/ECX . . . . . 0x22/imm32/dquote # compare ECX + 74/jump-if-equal $emit-string-literal-data:end/disp8 + # if (c != '\') goto emit + 81 7/subop/compare 3/mod/direct 1/rm32/ECX . . . . . 0x5c/imm32/backslash # compare ECX + 75/jump-if-not-equal $emit-string-literal-data:emit/disp8 + # ++curr + 42/increment-EDX + # if (curr >= max) break + 39/compare 3/mod/direct 2/rm32/EDX . . . 6/r32/ESI . . # compare EDX with ESI + 73/jump-if-greater-or-equal-unsigned $emit-string-literal-data:end/disp8 + # c = *curr + 8a/copy-byte 0/mod/indirect 2/rm32/EDX . . . 1/r32/CL . . # copy byte at *EDX to CL + # if (c == 'n') c = newline + 81 7/subop/compare 3/mod/direct 1/rm32/ECX . . . . . 0x6e/imm32/n # compare ECX + 75/jump-if-not-equal $emit-string-literal-data:emit/disp8 + b9/copy-to-ECX 0x0a/imm32/newline +$emit-string-literal-data:emit: + # append-byte-hex(out, CL) + # . . push args + 51/push-ECX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call append-byte-hex/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # if (is-alphanumeric?(*curr)) print(out, "/#{*curr}") + # . EAX = is-alphanumeric?(CL) + # . . push args + 51/push-ECX + # . . call + e8/call is-alphanumeric?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # . if (EAX == 0) goto char-done + 3d/compare-EAX-and 0/imm32 + 74/jump-if-equal $emit-string-literal-data:char-done/disp8 + # . write(out, "/") + # . . push args + 68/push Slash/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . append-byte(out, *curr) + # . . push args + 51/push-ECX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call append-byte/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +$emit-string-literal-data:char-done: + # write(out, " ") + # . . push args + 68/push Space/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # ++curr + 42/increment-EDX + e9/jump $emit-string-literal-data:loop/disp32 +$emit-string-literal-data:end: + # . restore registers + 5e/pop-to-ESI + 5a/pop-to-EDX + 59/pop-to-ECX + 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 + +is-alphanumeric?: # c : int -> EAX : boolean + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # EAX = c + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 8/disp8 . # copy *(EBP+8) to EAX + # if (EAX < '0') return false + 3d/compare-EAX-with 0x30/imm32/0 + 7c/jump-if-lesser $is-alphanumeric?:false/disp8 + # if (EAX <= '9') return true + 3d/compare-EAX-with 0x39/imm32/9 + 7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8 + # if (EAX < 'A') return false + 3d/compare-EAX-with 0x41/imm32/A + 7c/jump-if-lesser $is-alphanumeric?:false/disp8 + # if (EAX <= 'Z') return true + 3d/compare-EAX-with 0x5a/imm32/Z + 7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8 + # if (EAX < 'a') return false + 3d/compare-EAX-with 0x61/imm32/a + 7c/jump-if-lesser $is-alphanumeric?:false/disp8 + # if (EAX <= 'z') return true + 3d/compare-EAX-with 0x7a/imm32/z + 7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8 + # return false +$is-alphanumeric?:false: + b8/copy-to-EAX 0/imm32/false + eb/jump $is-alphanumeric?:end/disp8 +$is-alphanumeric?:true: + b8/copy-to-EAX 1/imm32/true +$is-alphanumeric?:end: + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-emit-string-literal-data: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-stream/imm32 + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # var slice/ECX = '"abc"/d' + 68/push _test-slice-abc-limit/imm32 + 68/push _test-slice-abc/imm32 + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-string-literal-data(_test-output-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-output-stream/imm32 + # . . call + e8/call emit-string-literal-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # dump output {{{ +#? # . write(2/stderr, "result: ^") +#? # . . push args +#? 68/push "result: ^"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write-stream(2/stderr, _test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write(2/stderr, "$\n") +#? # . . push args +#? 68/push "$\n"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # }}} + # . check-stream-equal(_test-output-stream, "3/imm32 61/a 62/b 63/c ", msg) + # . . push args + 68/push "F - test-emit-string-literal-data"/imm32 + 68/push "0x00000003/imm32 61/a 62/b 63/c "/imm32 + 68/push _test-output-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 + +test-emit-string-literal-data-empty: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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 = '""' + 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 + # emit-string-literal-data(_test-output-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-output-stream/imm32 + # . . call + e8/call emit-string-literal-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # dump output {{{ +#? # . write(2/stderr, "result: ^") +#? # . . push args +#? 68/push "result: ^"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write-stream(2/stderr, _test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write(2/stderr, "$\n") +#? # . . push args +#? 68/push "$\n"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # }}} + # . check-stream-equal(_test-output-stream, "0/imm32 ", msg) + # . . push args + 68/push "F - test-emit-string-literal-data-empty"/imm32 + 68/push "0x00000000/imm32 "/imm32 + 68/push _test-output-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 + +# just to keep things simple +test-emit-string-literal-data-no-metadata-for-non-alphanumerics: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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 = '"a b"' + 68/push _test-slice-a-space-b-limit/imm32 + 68/push _test-slice-a-space-b/imm32 + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-string-literal-data(_test-output-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-output-stream/imm32 + # . . call + e8/call emit-string-literal-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # dump output {{{ +#? # . write(2/stderr, "result: ^") +#? # . . push args +#? 68/push "result: ^"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write-stream(2/stderr, _test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write(2/stderr, "$\n") +#? # . . push args +#? 68/push "$\n"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # }}} + # . check-stream-equal(_test-output-stream, "3/imm32 61/a 20 62/b ", msg) # ideally we'd like to say '20/space' but that requires managing names for codepoints + # . . push args + 68/push "F - test-emit-string-literal-data-no-metadata-for-non-alphanumerics"/imm32 + 68/push "0x00000003/imm32 61/a 20 62/b "/imm32 + 68/push _test-output-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 + +test-emit-string-literal-data-handles-escape-sequences: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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 = '"a\"b"' + 68/push _test-slice-a-dquote-b-limit/imm32 + 68/push _test-slice-a-dquote-b/imm32 + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-string-literal-data(_test-output-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-output-stream/imm32 + # . . call + e8/call emit-string-literal-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # dump output {{{ +#? # . write(2/stderr, "result: ^") +#? # . . push args +#? 68/push "result: ^"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write-stream(2/stderr, _test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write(2/stderr, "$\n") +#? # . . push args +#? 68/push "$\n"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # }}} + # . check-stream-equal(_test-output-stream, "3/imm32 61/a 22 62/b ", msg) + # . . push args + 68/push "F - test-emit-string-literal-data-handles-escape-sequences"/imm32 + 68/push "0x00000003/imm32 61/a 22 62/b "/imm32 + 68/push _test-output-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 + +test-emit-string-literal-data-handles-newline-escape: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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 = '"a\nb"' + 68/push _test-slice-a-newline-b-limit/imm32 + 68/push _test-slice-a-newline-b/imm32 + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-string-literal-data(_test-output-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-output-stream/imm32 + # . . call + e8/call emit-string-literal-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # dump output {{{ +#? # . write(2/stderr, "result: ^") +#? # . . push args +#? 68/push "result: ^"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write-stream(2/stderr, _test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write(2/stderr, "$\n") +#? # . . push args +#? 68/push "$\n"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # }}} + # . check-stream-equal(_test-output-stream, "3/imm32 61/a 0a 62/b ", msg) + # . . push args + 68/push "F - test-emit-string-literal-data-handles-newline-escape"/imm32 + 68/push "0x00000003/imm32 61/a 0a 62/b "/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-stream-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +# emit everything from a word except the initial datum +emit-metadata: # out : (address buffered-file), word : (address slice) + # pseudocode + # var slice = {0, word->end} + # curr = word->start + # if *curr == '"' + # curr = skip-string-in-slice(curr, word->end) + # else + # while true + # if curr == word->end + # return + # if *curr == '/' + # break + # ++curr + # slice->start = curr + # write-slice-buffered(out, slice) + # + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers + 50/push-EAX + 51/push-ECX + 52/push-EDX + 53/push-EBX + 56/push-ESI + # ESI = word + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI + # curr/ECX = word->start + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 1/r32/ECX . . # copy *ESI to ECX + # end/EDX = word->end + 8b/copy 1/mod/*+disp8 6/rm32/ESI . . . 2/r32/EDX 4/disp8 . # copy *(ESI+4) to EDX + # var slice/EBX = {0, end} + 52/push-EDX + 68/push 0/imm32 + 89/copy 3/mod/direct 3/rm32/EBX . . . 4/r32/ESP . . # copy ESP to EBX + # EAX = 0 + b8/copy-to-EAX 0/imm32 +$emit-metadata:check-for-string-literal: + # - if (*curr == '"') curr = skip-string-in-slice(curr, end) + 8a/copy-byte 0/mod/indirect 1/rm32/ECX . . . 0/r32/AL . . # copy byte at *ECX to AL + 3d/compare-EAX-and 0x22/imm32/dquote + 75/jump-if-not-equal $emit-metadata:skip-datum-loop/disp8 +$emit-metadata:skip-string-literal: + # . EAX = skip-string-in-slice(curr, end) + # . . push args + 52/push-EDX + 51/push-ECX + # . . 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 + # . curr = EAX + 89/copy 3/mod/direct 1/rm32/ECX . . . 0/r32/EAX . . # copy EAX to ECX + eb/jump $emit-metadata:emit/disp8 +$emit-metadata:skip-datum-loop: + # - otherwise scan for '/' + # if (curr == end) return + 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX and EDX + 74/jump-if-equal $emit-metadata:end/disp8 + # if (*curr == '/') break + 8a/copy-byte 0/mod/indirect 1/rm32/ECX . . . 0/r32/AL . . # copy byte at *ECX to AL + 3d/compare-EAX-and 0x2f/imm32/slash + 74/jump-if-equal $emit-metadata:emit/disp8 + # ++curr + 41/increment-ECX + eb/jump $emit-metadata:skip-datum-loop/disp8 +$emit-metadata:emit: + # slice->start = ECX + 89/copy 0/mod/indirect 3/rm32/EBX . . . 1/r32/ECX . . # copy ECX to *EBX + # write-slice-buffered(out, slice) + # . . push args + 53/push-EBX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call write-slice-buffered/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . 8/imm32 . # add to ESP +$emit-metadata:end: + # . reclaim locals + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . 8/imm32 . # add to ESP + # . restore registers + 5e/pop-to-ESI + 5b/pop-to-EBX + 5a/pop-to-EDX + 59/pop-to-ECX + 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-emit-metadata: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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-output-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-output-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 + # (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 + # var slice/ECX = {EAX, ECX} + 51/push-ECX + 50/push-EAX + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-metadata(_test-output-buffered-file, slice) + # . . push args + 51/push-ECX + 68/push _test-output-buffered-file/imm32 + # . . call + e8/call emit-metadata/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # flush(_test-output-buffered-file) + # . . push args + 68/push _test-output-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-output-stream, "/def", msg) # important that there's no leading space + # . . push args + 68/push "F - test-emit-metadata"/imm32 + 68/push "/def"/imm32 + 68/push _test-output-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 + +test-emit-metadata-none: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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-output-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-output-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 + # (EAX..ECX) = "abc" + 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 + # var slice/ECX = {EAX, ECX} + 51/push-ECX + 50/push-EAX + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-metadata(_test-output-buffered-file, slice) + # . . push args + 51/push-ECX + 68/push _test-output-buffered-file/imm32 + # . . call + e8/call emit-metadata/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # flush(_test-output-buffered-file) + # . . push args + 68/push _test-output-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-output-stream, "", msg) + # . . push args + 68/push "F - test-emit-metadata-none"/imm32 + 68/push ""/imm32 + 68/push _test-output-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 + +test-emit-metadata-multiple: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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-output-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-output-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 + # (EAX..ECX) = "abc/def/ghi" + b8/copy-to-EAX "abc/def/ghi"/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 slice/ECX = {EAX, ECX} + 51/push-ECX + 50/push-EAX + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-metadata(_test-output-buffered-file, slice) + # . . push args + 51/push-ECX + 68/push _test-output-buffered-file/imm32 + # . . call + e8/call emit-metadata/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # flush(_test-output-buffered-file) + # . . push args + 68/push _test-output-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-output-stream, "/def/ghi", msg) # important that there's no leading space + # . . push args + 68/push "F - test-emit-metadata-multiple"/imm32 + 68/push "/def/ghi"/imm32 + 68/push _test-output-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 + +test-emit-metadata-when-no-datum: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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-output-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-output-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 + # var slice/ECX = "/abc" + b8/copy-to-EAX "/abc"/imm32 + # . push end/ECX + 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 + 51/push-ECX + # . push curr/EAX + 05/add-to-EAX 4/imm32 + 50/push-EAX + # . save stack pointer + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-metadata(_test-output-buffered-file, slice) + # . . push args + 51/push-ECX + 68/push _test-output-buffered-file/imm32 + # . . call + e8/call emit-metadata/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # flush(_test-output-buffered-file) + # . . push args + 68/push _test-output-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-output-stream, "/abc", msg) # nothing skipped + # . . push args + 68/push "F - test-emit-metadata-when-no-datum"/imm32 + 68/push "/abc"/imm32 + 68/push _test-output-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 + +test-emit-metadata-in-string-literal: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-output-stream) + # . . push args + 68/push _test-output-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-output-buffered-file+4) + # . . push args + b8/copy-to-EAX _test-output-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 + # var slice/ECX = "\"abc/def\"/ghi" + 68/push _test-slice-literal-string-with-limit/imm32 + 68/push _test-slice-literal-string/imm32/start + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # emit-metadata(_test-output-buffered-file, slice) + # . . push args + 51/push-ECX + 68/push _test-output-buffered-file/imm32 + # . . call + e8/call emit-metadata/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # flush(_test-output-buffered-file) + # . . push args + 68/push _test-output-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 +#? # dump output {{{ +#? # . write(2/stderr, "result: ^") +#? # . . push args +#? 68/push "result: ^"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write-stream(2/stderr, _test-output-stream) +#? # . . push args +#? 68/push _test-output-stream/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write-stream/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # . write(2/stderr, "$\n") +#? # . . push args +#? 68/push "$\n"/imm32 +#? 68/push 2/imm32/stderr +#? # . . call +#? e8/call write/disp32 +#? # . . discard args +#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +#? # }}} + # check-stream-equal(_test-output-stream, "/ghi", msg) # important that there's no leading space + # . . push args + 68/push "F - test-emit-metadata-in-string-literal"/imm32 + 68/push "/ghi"/imm32 + 68/push _test-output-stream/imm32 + # . . call + e8/call check-stream-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +# (re)compute the bounds of the next word in the line +# return empty string on reaching end of file +next-word-or-string: # line : (address stream byte), out : (address slice) + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers + 50/push-EAX + 51/push-ECX + 56/push-ESI + 57/push-EDI + # ESI = line + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI + # EDI = out + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 7/r32/EDI 0xc/disp8 . # copy *(EBP+12) to EDI + # skip-chars-matching(line, ' ') + # . . push args + 68/push 0x20/imm32/space + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call skip-chars-matching/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +$next-word-or-string:check0: + # if (line->read >= line->write) clear out and return + # . EAX = line->read + 8b/copy 1/mod/*+disp8 6/rm32/ESI . . . 0/r32/EAX 4/disp8 . # copy *(ESI+4) to EAX + # . if (EAX < line->write) goto next check + 3b/compare 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # compare EAX with *ESI + 7c/jump-if-lesser $next-word-or-string:check-for-comment/disp8 + # . return out = {0, 0} + c7 0/subop/copy 0/mod/direct 7/rm32/EDI . . . . . 0/imm32 # copy to *EDI + c7 0/subop/copy 1/mod/*+disp8 7/rm32/EDI . . . . 4/disp8 0/imm32 # copy to *(EDI+4) + eb/jump $next-word-or-string:end/disp8 +$next-word-or-string:check-for-comment: + # out->start = &line->data[line->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 + # if line->data[line->read] == '#' + # . EAX = line->data[line->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 + # . compare + 3d/compare-EAX-and 0x23/imm32/pound + 75/jump-if-not-equal $next-word-or-string:check-for-string-literal/disp8 +$next-word-or-string:comment: + # out->end = &line->data[line->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 + 89/copy 1/mod/*+disp8 7/rm32/EDI . . . 0/r32/EAX 4/disp8 . # copy EAX to *(EDI+4) + # line->read = line->write # skip rest of line + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # copy *ESI to EAX + 89/copy 1/mod/*+disp8 6/rm32/ESI . . . 0/r32/EAX 4/disp8 . # copy EAX to *(ESI+4) + # return + eb/jump $next-word-or-string:end/disp8 +$next-word-or-string:check-for-string-literal: + # if line->data[line->read] == '"' + # . EAX = line->data[line->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 + # . compare + 3d/compare-EAX-and 0x22/imm32/dquote + 75/jump-if-not-equal $next-word-or-string:regular-word/disp8 +$next-word-or-string:string-literal: + # skip-string(line) + # . . push args + 56/push-ESI + # . . call + e8/call skip-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # fall through +$next-word-or-string:regular-word: + # skip-chars-not-matching-whitespace(line) # including trailing newline + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call skip-chars-not-matching-whitespace/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # out->end = &line->data[line->read] + 8b/copy 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 4/disp8 . # copy *(ESI+4) to ECX + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/ESI 1/index/ECX . 0/r32/EAX 0xc/disp8 . # copy ESI+ECX+12 to EAX + 89/copy 1/mod/*+disp8 7/rm32/EDI . . . 0/r32/EAX 4/disp8 . # copy EAX to *(EDI+4) +$next-word-or-string:end: + # . restore registers + 5f/pop-to-EDI + 5e/pop-to-ESI + 59/pop-to-ECX + 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-next-word-or-string: + # . prolog + 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 + # var slice/ECX = {0, 0} + 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-input-stream, " ab") + # . . push args + 68/push " ab"/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 + # next-word-or-string(_test-input-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-input-stream/imm32 + # . . call + e8/call next-word-or-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(_test-input-stream->read, 4, msg) + # . . push args + 68/push "F - test-next-word-or-string/updates-stream-read-correctly"/imm32 + 68/push 4/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 + # check-ints-equal(slice->start - _test-input-stream->data, 2, msg) + # . check-ints-equal(slice->start - _test-input-stream, 14, msg) + # . . push args + 68/push "F - test-next-word-or-string: start"/imm32 + 68/push 0xe/imm32 + # . . push slice->start - _test-input-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-input-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-input-stream->data, 4, msg) + # . check-ints-equal(slice->end - _test-input-stream, 16, msg) + # . . push args + 68/push "F - test-next-word-or-string: end"/imm32 + 68/push 0x10/imm32 + # . . push slice->end - _test-input-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-input-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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-next-word-or-string-returns-whole-comment: + # . prolog + 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 + # var slice/ECX = {0, 0} + 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-input-stream, " # a") + # . . push args + 68/push " # a"/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 + # next-word-or-string(_test-input-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-input-stream/imm32 + # . . call + e8/call next-word-or-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(_test-input-stream->read, 5, msg) + # . . push args + 68/push "F - test-next-word-or-string-returns-whole-comment/updates-stream-read-correctly"/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 + # check-ints-equal(slice->start - _test-input-stream->data, 2, msg) + # . check-ints-equal(slice->start - _test-input-stream, 14, msg) + # . . push args + 68/push "F - test-next-word-or-string-returns-whole-comment: start"/imm32 + 68/push 0xe/imm32 + # . . push slice->start - _test-input-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-input-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-input-stream->data, 5, msg) + # . check-ints-equal(slice->end - _test-input-stream, 17, msg) + # . . push args + 68/push "F - test-next-word-or-string-returns-whole-comment: end"/imm32 + 68/push 0x11/imm32 + # . . push slice->end - _test-input-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-input-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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-next-word-or-string-returns-empty-string-on-eof: + # . prolog + 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 + # var slice/ECX = {0, 0} + 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-input-stream + # next-word-or-string(_test-input-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-input-stream/imm32 + # . . call + e8/call next-word-or-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(slice->end - slice->start, 0, msg) + # . . push args + 68/push "F - test-next-word-or-string-returns-empty-string-on-eof"/imm32 + 68/push 0/imm32 + # . . push slice->end - slice->start + 8b/copy 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy *(ECX+4) to EAX + 2b/subtract 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # subtract *ECX 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-next-word-or-string-returns-whole-string: + # . prolog + 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 + # var slice/ECX = {0, 0} + 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-input-stream, " \"a b\"/imm32 ") + # . . push args + 68/push " \"a b\"/imm32 "/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 + # next-word-or-string(_test-input-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-input-stream/imm32 + # . . call + e8/call next-word-or-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(slice->start - _test-input-stream->data, 1, msg) + # . check-ints-equal(slice->start - _test-input-stream, 13, msg) + # . . push args + 68/push "F - test-next-word-or-string-returns-whole-string: start"/imm32 + 68/push 0xd/imm32 + # . . push slice->start - _test-input-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-input-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-input-stream->data, 12, msg) + # . check-ints-equal(slice->end - _test-input-stream, 24, msg) + # . . push args + 68/push "F - test-next-word-or-string-returns-whole-string: end"/imm32 + 68/push 0x18/imm32 + # . . push slice->end - _test-input-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-input-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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-next-word-or-string-returns-string-with-escapes: + # . prolog + 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 + # var slice/ECX = {0, 0} + 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-input-stream, " \"a\\\"b\"/x") + # . . push args + 68/push " \"a\\\"b\"/x"/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 + # next-word-or-string(_test-input-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-input-stream/imm32 + # . . call + e8/call next-word-or-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(slice->start - _test-input-stream->data, 1, msg) + # . check-ints-equal(slice->start - _test-input-stream, 13, msg) + # . . push args + 68/push "F - test-next-word-or-string-returns-string-with-escapes: start"/imm32 + 68/push 0xd/imm32 + # . . push slice->start - _test-input-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-input-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-input-stream->data, 9, msg) + # . check-ints-equal(slice->end - _test-input-stream, 21, msg) + # . . push args + 68/push "F - test-next-word-or-string-returns-string-with-escapes: end"/imm32 + 68/push 0x15/imm32 + # . . push slice->end - _test-input-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-input-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 + # . epilog + 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 end of string literal surrounded by double quotes +# line->read must start out at a double-quote +skip-string: # line : (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 + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-skip-string: + # . prolog + 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 + # . epilog + 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: + # . prolog + 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 + # . epilog + 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: + # . prolog + 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 + # . epilog + 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: + # . prolog + 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 + 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 + # . epilog + 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 : (address byte), end : (address byte) -> new_curr/EAX + # . prolog + 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 + # EAX = 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-greater-unsigned-or-equal $skip-string-in-slice:return-curr/disp8 + # AL = *curr + 8a/copy-byte 0/mod/indirect 1/rm32/ECX . . . 0/r32/AL . . # copy byte at *ECX to AL +$skip-string-in-slice:dquote: + # if (EAX == '"') break + 3d/compare-EAX-and 0x22/imm32/double-quote + 74/jump-if-equal $skip-string-in-slice:break/disp8 +$skip-string-in-slice:check-for-escape: + # if (EAX == '\') escape next char + 3d/compare-EAX-and 0x5c/imm32/backslash + 75/jump-if-not-equal $skip-string-in-slice:continue/disp8 +$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 + # . epilog + 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: + # . prolog + 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 + # . epilog + 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: + # . prolog + 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 + # . epilog + 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: + # . prolog + 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 + # . epilog + 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: + # . prolog + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +string-length-at-start-of-slice: # curr : (address byte), end : (address byte) -> length/EAX + # . prolog + 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 + # length/EAX = 0 + 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX + # EBX = 0 + 31/xor 3/mod/direct 3/rm32/EBX . . . 3/r32/EBX . . # clear EBX + # skip initial dquote + 41/increment-ECX +$string-length-at-start-of-slice:loop: + # if (curr >= end) return length + 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX + 73/jump-if-greater-unsigned-or-equal $string-length-at-start-of-slice:end/disp8 + # BL = *curr + 8a/copy-byte 0/mod/indirect 1/rm32/ECX . . . 3/r32/BL . . # copy byte at *ECX to BL +$string-length-at-start-of-slice:dquote: + # if (EBX == '"') break + 81 7/subop/compare 3/mod/direct 3/rm32/EBX . . . . . 0x22/imm32/dquote # compare EBX + 74/jump-if-equal $string-length-at-start-of-slice:end/disp8 +$string-length-at-start-of-slice:check-for-escape: + # if (EBX == '\') escape next char + 81 7/subop/compare 3/mod/direct 3/rm32/EBX . . . . . 0x5c/imm32/backslash # compare EBX + 75/jump-if-not-equal $string-length-at-start-of-slice:continue/disp8 +$string-length-at-start-of-slice:escape: + # increment curr but not result + 41/increment-ECX +$string-length-at-start-of-slice:continue: + # ++result + 40/increment-EAX + # ++curr + 41/increment-ECX + eb/jump $string-length-at-start-of-slice:loop/disp8 +$string-length-at-start-of-slice:end: + # . restore registers + 5b/pop-to-EBX + 5a/pop-to-EDX + 59/pop-to-ECX + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-string-length-at-start-of-slice: + # . prolog + 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 = string-length-at-start-of-slice(EAX, ECX) + # . . push args + 51/push-ECX + 50/push-EAX + # . . call + e8/call string-length-at-start-of-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 3, msg) + # . . push args + 68/push "F - test-string-length-at-start-of-slice"/imm32 + 68/push 3/imm32 + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-string-length-at-start-of-slice-escaped: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup: (EAX..ECX) = "\"ab\\c\" def" + b8/copy-to-EAX "\"ab\\c\" 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 = string-length-at-start-of-slice(EAX, ECX) + # . . push args + 51/push-ECX + 50/push-EAX + # . . call + e8/call string-length-at-start-of-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 3, msg) + # . . push args + 68/push "F - test-string-length-at-start-of-slice-escaped"/imm32 + 68/push 3/imm32 + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +== data + +Next-string-literal: # tracks the next auto-generated variable name + 1/imm32 + +# length-prefixed string containing just a single space +Space: + # size + 1/imm32 + # data + 20/space + +# length-prefixed string containing just a single slash +Slash: + # size + 1/imm32 + # data + 2f/slash + +_test-slice-abc: + 22/dquote 61/a 62/b 63/c 22/dquote # "abc" + 2f/slash 64/d +_test-slice-abc-limit: + +_test-slice-a-space-b: + 22/dquote 61/a 20/space 62/b 22/dquote # "a b" +_test-slice-a-space-b-limit: + +_test-slice-a-dquote-b: + 22/dquote 61/a 5c/backslash 22/dquote 62/b 22/dquote # "a\"b" +_test-slice-a-dquote-b-limit: + +_test-slice-a-newline-b: + 22/dquote 61/a 5c/backslash 6e/n 62/b 22/dquote # "a\nb" +_test-slice-a-newline-b-limit: + +# "abc/def"/ghi +_test-slice-literal-string: + 22/dquote + 61/a 62/b 63/c # abc + 2f/slash 64/d 65/e 66/f # /def + 22/dquote + 2f/slash 67/g 68/h 69/i # /ghi +_test-slice-literal-string-with-limit: + +# . . vim:nowrap:textwidth=0 |