diff options
| -rw-r--r-- | subx/apps/dquotes | bin | 0 -> 18002 bytes | |||
| -rw-r--r-- | subx/apps/dquotes.subx | 582 |
2 files changed, 582 insertions, 0 deletions
diff --git a/subx/apps/dquotes b/subx/apps/dquotes new file mode 100644 index 00000000..bdf51016 --- /dev/null +++ b/subx/apps/dquotes Binary files differdiff --git a/subx/apps/dquotes.subx b/subx/apps/dquotes.subx new file mode 100644 index 00000000..61a1b83b --- /dev/null +++ b/subx/apps/dquotes.subx @@ -0,0 +1,582 @@ +# 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/dquote.subx -o apps/dquote +# $ cat x +# == code +# ab "cd ef"/imm32 +# $ cat x |./subx run apps/dquote +# == 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: # run tests if necessary, convert stdin if not + + # for debugging: run a single test +#? e8/call test-next-word-returns-string-with-escapes/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 + + # . 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 +$main:end: + b8/copy-to-EAX 1/imm32/exit + cd/syscall 0x80/imm8 + +# data structure: +# row: pair of (address array byte) and (address stream byte) +# table: (address stream row) + +convert: # in : (address buffered-file), out : (address buffered-file) -> <void> + # pseudocode: + # var line = new-stream(512, 1) + # var new-data-segment = new-stream(Heap, Segment-size, 1) + # write-stream(new-data-segment, "== data\n") + # while true + # clear-stream(line) + # read-line(in, line) + # if (line->write == 0) break # end of file + # while true + # var word-slice = next-word(line) + # if slice-empty?(word-slice) # end of line + # break + # if slice-starts-with?(word-slice, "#") # comment + # continue + # if slice-starts-with?(word-slice, '"') # string literal <== what we're here for + # process-literal-string(out, word-slice, new-segment) + # else + # write-slice(out, word-slice) + # flush(out) + # + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP +$convert:end: + # . 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) + # . 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: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: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 $next-word:end/disp8 +$next-word: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 $next-word:check-for-string-literal/disp8 +$next-word: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 + 89/copy 1/mod/*+disp8 6/rm32/ESI . . . 0/r32/EAX 4/disp8 . # copy EAX to *(ESI+4) + # return + eb/jump $next-word:end/disp8 +$next-word: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 $next-word:regular-word/disp8 +$next-word:string-literal: + # ++line->read # skip '"' + # . persist line->read + 89/copy 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 4/disp8 . # copy ECX to *(ESI+4) + # . ++line->read + ff 0/subop/increment 1/mod/*+disp8 6/rm32/ESI . . . . 4/disp8 . # increment *(ESI+4) + # parse-string(line, out) + # . . push args + 57/push-EDI + 56/push-ESI + # . . call + e8/call parse-string/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # return + eb/jump $next-word:end/disp8 +$next-word:regular-word: + # otherwise 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) +$next-word:end: + # . restore registers + 5f/pop-to-EDI + 5e/pop-to-ESI + 59/pop-to-ECX + 58/pop-to-EAX + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +parse-string: # line : (address stream byte), out : (address slice) + # pseudocode: + # ESI = line + # curr/ECX = line->data[line->read] + # max/EDX = line->data[line->write] + # while curr >= max + # if (*curr == '"') ++curr, break + # if (*curr == '\\') curr+=2, continue + # ++curr + # line->read = curr - line->data + # out->end = curr + # + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers + 50/push-EAX + 51/push-ECX + 52/push-EDX + 56/push-ESI + # ESI = line + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI + # curr/ECX = &table->data[table->read] + # . ECX = table->read + 8b/copy 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 4/disp8 . # copy *(ESI+4) to ECX + # . ECX = table->data + ECX + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/ESI 1/index/ECX . 1/r32/ECX 0xc/disp8 . # copy ESI+ECX+12 to ECX + # max/EDX = &table->data[table->write] + # . EDX = table->write + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX + # . EDX = table->data + EDX + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/ESI 2/index/EDX . 2/r32/EDX 0xc/disp8 . # copy ESI+EDX+12 to EDX + # clear EAX + 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX +$parse-string:loop: + # if (curr >= max) break + 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX + 7d/jump-if-greater-or-equal $parse-string:break/disp8 + # c/EAX = *curr + 8a/copy-byte 0/mod/indirect 1/rm32/ECX . . . 0/r32/AL . . # copy byte at *ECX to AL +$parse-string:check1: + # if (c == '"') ++curr, break + 3d/compare-EAX-and 0x22/imm32/dquote + 75/jump-if-not-equal $parse-string:check2/disp8 + # . ++curr + 41/increment-ECX + # . break + eb/jump $parse-string:break/disp8 +$parse-string:check2: + # if (c == '\\') ++curr + 3d/compare-EAX-and 0x5c/imm32/backslash + 75/jump-if-not-equal $parse-string:continue/disp8 + # . ++curr + 41/increment-ECX +$parse-string:continue: + # ++curr + 41/increment-ECX + # loop + eb/jump $parse-string:loop/disp8 +$parse-string:break: + # out->end = curr + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 0xc/disp8 . # copy *(EBP+12) to EDI + 89/copy 1/mod/*+disp8 0/rm32/EAX . . . 1/r32/ECX 4/disp8 . # copy ECX to *(EAX+4) + # line->read = curr - line - 12 + 29/subtract 3/mod/direct 1/rm32/ECX . . . 6/r32/ESI . . # subtract ESI from ECX + 81 5/subop/subtract 3/mod/direct 1/rm32/ECX . . . . . 0xc/imm32 # subtract from ECX + 89/copy 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 4/disp8 . # copy ECX to *(ESI+4) +$parse-string: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 + +test-next-word: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # setup + # . clear-stream(_test-stream) + # . . push args + 68/push _test-stream/imm32 + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # 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-stream, " ab") + # . . push args + 68/push " ab"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # next-word(_test-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-stream/imm32 + # . . call + e8/call next-word/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(slice->start - _test-stream->data, 2, msg) + # . check-ints-equal(slice->start - _test-stream, 14, msg) + # . . push args + 68/push "F - test-next-word: start"/imm32 + 68/push 0xe/imm32 + # . . push slice->start - _test-stream + 8b/copy 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # copy *ECX to EAX + 81 5/subop/subtract 3/mod/direct 0/rm32/EAX . . . . . _test-stream/imm32 # subtract from EAX + 50/push-EAX + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # check-ints-equal(slice->end - _test-stream->data, 4, msg) + # . check-ints-equal(slice->end - _test-stream, 16, msg) + # . . push args + 68/push "F - test-next-word: end"/imm32 + 68/push 0x10/imm32 + # . . push slice->end - _test-stream + 8b/copy 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy *(ECX+4) to EAX + 81 5/subop/subtract 3/mod/direct 0/rm32/EAX . . . . . _test-stream/imm32 # subtract from EAX + 50/push-EAX + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . 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-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-stream) + # . . push args + 68/push _test-stream/imm32 + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # var slice/ECX = {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-stream, " # a") + # . . push args + 68/push " # a"/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # next-word(_test-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-stream/imm32 + # . . call + e8/call next-word/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(slice->start - _test-stream->data, 2, msg) + # . check-ints-equal(slice->start - _test-stream, 14, msg) + # . . push args + 68/push "F - test-next-word-returns-whole-comment: start"/imm32 + 68/push 0xe/imm32 + # . . push slice->start - _test-stream + 8b/copy 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # copy *ECX to EAX + 81 5/subop/subtract 3/mod/direct 0/rm32/EAX . . . . . _test-stream/imm32 # subtract from EAX + 50/push-EAX + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # check-ints-equal(slice->end - _test-stream->data, 5, msg) + # . check-ints-equal(slice->end - _test-stream, 17, msg) + # . . push args + 68/push "F - test-next-word-returns-whole-comment: end"/imm32 + 68/push 0x11/imm32 + # . . push slice->end - _test-stream + 8b/copy 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy *(ECX+4) to EAX + 81 5/subop/subtract 3/mod/direct 0/rm32/EAX . . . . . _test-stream/imm32 # subtract from EAX + 50/push-EAX + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . 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-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-stream) + # . . push args + 68/push _test-stream/imm32 + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # var slice/ECX = {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-stream + # next-word(_test-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-stream/imm32 + # . . call + e8/call next-word/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-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-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-stream) + # . . push args + 68/push _test-stream/imm32 + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # var slice/ECX = {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-stream, " \"a b\"") + # . . push args + 68/push " \"a b\""/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # next-word(_test-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-stream/imm32 + # . . call + e8/call next-word/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(slice->start - _test-stream->data, 1, msg) + # . check-ints-equal(slice->start - _test-stream, 13, msg) + # . . push args + 68/push "F - test-next-word-returns-whole-string: start"/imm32 + 68/push 0xd/imm32 + # . . push slice->start - _test-stream + 8b/copy 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # copy *ECX to EAX + 81 5/subop/subtract 3/mod/direct 0/rm32/EAX . . . . . _test-stream/imm32 # subtract from EAX + 50/push-EAX + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # check-ints-equal(slice->end - _test-stream->data, 6, msg) + # . check-ints-equal(slice->end - _test-stream, 18, msg) + # . . push args + 68/push "F - test-next-word-returns-whole-string: end"/imm32 + 68/push 0x12/imm32 + # . . push slice->end - _test-stream + 8b/copy 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy *(ECX+4) to EAX + 81 5/subop/subtract 3/mod/direct 0/rm32/EAX . . . . . _test-stream/imm32 # subtract from EAX + 50/push-EAX + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . 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-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-stream) + # . . push args + 68/push _test-stream/imm32 + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # var slice/ECX = {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-stream, " \"a\\\"b\"") + # . . push args + 68/push " \"a\\\"b\""/imm32 + 68/push _test-stream/imm32 + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # next-word(_test-stream, slice) + # . . push args + 51/push-ECX + 68/push _test-stream/imm32 + # . . call + e8/call next-word/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(slice->start - _test-stream->data, 1, msg) + # . check-ints-equal(slice->start - _test-stream, 13, msg) + # . . push args + 68/push "F - test-next-word-returns-string-with-escapes: start"/imm32 + 68/push 0xd/imm32 + # . . push slice->start - _test-stream + 8b/copy 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # copy *ECX to EAX + 81 5/subop/subtract 3/mod/direct 0/rm32/EAX . . . . . _test-stream/imm32 # subtract from EAX + 50/push-EAX + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # check-ints-equal(slice->end - _test-stream->data, 7, msg) + # . check-ints-equal(slice->end - _test-stream, 19, msg) + # . . push args + 68/push "F - test-next-word-returns-string-with-escapes: end"/imm32 + 68/push 0x13/imm32 + # . . push slice->end - _test-stream + 8b/copy 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy *(ECX+4) to EAX + 81 5/subop/subtract 3/mod/direct 0/rm32/EAX . . . . . _test-stream/imm32 # subtract from EAX + 50/push-EAX + # . . call + e8/call check-ints-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +# . . vim:nowrap:textwidth=0 |