diff options
Diffstat (limited to 'subx/apps/dquotes.subx')
| -rw-r--r-- | subx/apps/dquotes.subx | 489 |
1 files changed, 488 insertions, 1 deletions
diff --git a/subx/apps/dquotes.subx b/subx/apps/dquotes.subx index fcac2698..cd376f5d 100644 --- a/subx/apps/dquotes.subx +++ b/subx/apps/dquotes.subx @@ -89,6 +89,10 @@ $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) @@ -108,6 +112,8 @@ convert: # in : (address buffered-file), out : (address buffered-file) -> <void # process-string-literal(word-slice, out, new-data-segment) # else # write-slice(out, word-slice) + # write(out, " ") + # write(out, "\n\n") # write-stream-data(out, new-data-segment) # flush(out) # @@ -296,6 +302,13 @@ process-string-literal: # string-literal : (address slice), out : (address buff # . . 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 @@ -322,8 +335,30 @@ process-string-literal: # string-literal : (address slice), out : (address buff 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(tmp, *Next-string-literal) + # . 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: @@ -593,6 +628,449 @@ test-convert-is-idempotent-by-default: 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\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 + # 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 +#? # }}} + # . check-next-stream-line-equal(_test-output-stream, "== code ", msg) + # . . push args + 68/push "F - test-convert-processes-string-literals/0"/imm32 + 68/push "== code "/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 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 ", 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 "1/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 "2/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) + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers +$emit-string-literal-data:end: + # . reclaim locals + # . restore registers + # . 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) + # . 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 + + # PSEUDOCODE + # ECX = (char *) word->start + # while true: + # if ECX == word->end: return + # if *(ECX++) == '/': break + # write-slice(out, {ECX, word->end}) + + # ECX = word + 8b/copy/word 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0xc/disp8 . # copy *(EBP+12) to ECX + # EDX = word->end + 8b/copy/word->end 1/mod/*+disp8 1/rm32/ECX . . . 2/r32/EDX 4/disp8 . # copy *(ECX+4) to EDX + # ECX = word->start + 8b/copy/word->start 0/mod/indirect 1/rm32/ECX . . . 1/r32/ECX . . # copy *ECX to ECX + + # clear out EAX + b8/copy-to-EAX 0/imm32 + # while *start != '/': +$skip-datum-loop: + # . start == end? + 39/compare-ECX-and 3/mod/direct 2/rm32/EDX . . . 1/r32/ECX . . # EDX == ECX + # . if so, return from function (it's only datum, or empty) + 74/jump-if-equal $emit-metadata:end/disp8 + + # . start++ + 41/increment-ECX # ECX++ + + # . EAX = *start + 8a/copy-byte 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # copy *ECX to EAX + + # . EAX != '/'? + 3d/compare-EAX-and 0x2f/imm32 + # . if so, continue looping + 75/jump-if-not-equal $skip-datum-loop/disp8 + # end + + # write-slice(out, &{start, end}) + # . push end + 52/push-EDX + # . push start + 51/push-ECX + # . push &{start, end} + 54/push-ESP + + # . push out + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + + e8/call write-slice/disp32 + # . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . 0x10/imm32 . # add 16 to ESP + +$emit-metadata: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-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 + # var slice/ECX = "abc/def" + 68/push _test-slice-word-end/imm32 + 68/push _test-slice-word/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 + # 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 + # var slice/ECX = "abc" + 68/push _test-slice-word-datum-end/imm32 + 68/push _test-slice-word/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 + # 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 + # var slice/ECX = "abc/def/ghi" + 68/push _test-slice-word-end2/imm32 + 68/push _test-slice-word/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 + # 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 + # (re)compute the bounds of the next word in the line # return empty string on reaching end of file next-word: # line : (address stream byte), out : (address slice) @@ -1078,4 +1556,13 @@ Heap: # limit 0/imm32 +# abc/def/ghi +_test-slice-word: + 61/a 62/b 63/c # abc +_test-slice-word-datum-end: + 2f/slash 64/d 65/e 66/f # /def +_test-slice-word-end: + 2f/slash 67/g 68/h 69/i # /ghi +_test-slice-word-end2: + # . . vim:nowrap:textwidth=0 |