# Translate literal strings within double quotes. # Replace them with references to new variables in the data segment. # # To run: # $ ./bootstrap translate init.linux 0*.subx apps/subx-params.subx apps/dquotes.subx -o apps/dquotes # $ cat x # == code # ab "cd ef"/imm32 # $ cat x |./bootstrap 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: # run tests if necessary, convert stdin if not # . prologue 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # 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 # - if argc > 1 and argv[1] == "test", then return run-tests() # if (argc <= 1) goto interactive 81 7/subop/compare 1/mod/*+disp8 5/rm32/ebp . . . . 0/disp8 1/imm32 # compare *ebp 7e/jump-if-<= $subx-dquotes-main:interactive/disp8 # if (!kernel-string-equal?(argv[1], "test")) goto interactive # . eax = kernel-string-equal?(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 # . if (eax == false) goto interactive 3d/compare-eax-and 0/imm32/false 74/jump-if-= $subx-dquotes-main:interactive/disp8 # run-tests() e8/call run-tests/disp32 # syscall(exit, *Num-test-failures) 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/ebx Num-test-failures/disp32 # copy *Num-test-failures to ebx eb/jump $subx-dquotes-main:end/disp8 $subx-dquotes-main:interactive: # - 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 # subx-dquotes(Stdin, Stdout, Stderr, ed) # . . push args 50/push-eax/ed 68/push Stderr/imm32 68/push Stdout/imm32 68/push Stdin/imm32 # . . call e8/call subx-dquotes/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 $subx-dquotes-main:end: e8/call syscall_exit/disp32 # conceptual hierarchy within a line: # line = wo
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    <p><tt>This&nbsp;package&nbsp;includes&nbsp;container-objects&nbsp;which&nbsp;are<br>
used&nbsp;to&nbsp;manage&nbsp;stored&nbsp;data</tt></p>
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generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-11-15 08:22:28 +0000
. . . 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 $process-string-literal:end: # . reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x16/imm32 # add to esp # . restore registers 59/pop-to-ecx # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-subx-dquotes-is-idempotent-by-default: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-input-stream) # . . push args 68/push _test-input-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-input-buffered-file->buffer) # . . push args 68/push $_test-input-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-output-buffered-file->buffer) # . . push args 68/push $_test-output-buffered-file->buffer/imm32 # . . 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 Newline/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 # subx-dquotes(_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 subx-dquotes/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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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 # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-subx-dquotes-processes-string-literals: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-input-stream) # . . push args 68/push _test-input-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-input-buffered-file->buffer) # . . push args 68/push $_test-input-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-output-buffered-file->buffer) # . . push args 68/push $_test-output-buffered-file->buffer/imm32 # . . 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 # subx-dquotes(_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 subx-dquotes/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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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-subx-dquotes-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 # . epilogue 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: (addr stream byte), word: (addr slice) # pseudocode # len = string-length-at-start-of-slice(word->start, word->end) # print(out, "#{len}/imm32 ") # curr = word->start # ++curr # skip '"' # idx = 0 # 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 # ++idx # if idx >= 0x40 # idx = 0 # write(out, "\n") # # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 50/push-eax 51/push-ecx 52/push-edx 53/push-ebx 56/push-esi # esi = word 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi # var idx/ebx: int = 0 31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx # var curr/edx: (addr byte) = word->start 8b/copy 0/mod/indirect 6/rm32/esi . . . 2/r32/edx . . # copy *esi to edx # var max/esi: (addr byte) = 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: # var len/eax: int = 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 ") # . write-int32-hex(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 write-int32-hex/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 # var c/ecx: byte = 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-addr>= $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 0f 84/jump-if-= $emit-string-literal-data:end/disp32 # if (c != '\') goto emit 81 7/subop/compare 3/mod/direct 1/rm32/ecx . . . . . 0x5c/imm32/backslash # compare ecx 75/jump-if-!= $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 0f 83/jump-if-addr>= $emit-string-literal-data:end/disp32 # 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-!= $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}") # . var eax: boolean = 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 == false) goto char-done 3d/compare-eax-and 0/imm32/false 74/jump-if-= $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 # ++ idx 43/increment-ebx # if (idx < 0x40) continue 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x40/imm32 # compare ebx 7c/jump-if-< $emit-string-literal-data:next-char/disp8 # idx = 0 31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx # write(out, "\n") # . . push args 68/push Newline/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:next-char: e9/jump $emit-string-literal-data:loop/disp32 $emit-string-literal-data:end: # . restore registers 5e/pop-to-esi 5b/pop-to-ebx 5a/pop-to-edx 59/pop-to-ecx 58/pop-to-eax # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return is-alphanumeric?: # c: int -> eax: boolean # . prologue 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 (c < '0') return false 3d/compare-eax-with 0x30/imm32/0 7c/jump-if-< $is-alphanumeric?:false/disp8 # if (c <= '9') return true 3d/compare-eax-with 0x39/imm32/9 7e/jump-if-<= $is-alphanumeric?:true/disp8 # if (c < 'A') return false 3d/compare-eax-with 0x41/imm32/A 7c/jump-if-< $is-alphanumeric?:false/disp8 # if (c <= 'Z') return true 3d/compare-eax-with 0x5a/imm32/Z 7e/jump-if-<= $is-alphanumeric?:true/disp8 # if (c < 'a') return false 3d/compare-eax-with 0x61/imm32/a 7c/jump-if-< $is-alphanumeric?:false/disp8 # if (c <= 'z') return true 3d/compare-eax-with 0x7a/imm32/z 7e/jump-if-<= $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 $is-alphanumeric?:end: # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-emit-string-literal-data: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # var slice/ecx = '"abc"/d' 68/push _test-slice-abc-limit/imm32 68/push _test-slice-abc/imm32 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # emit-string-literal-data(_test-output-stream, slice) # . . push args 51/push-ecx 68/push _test-output-stream/imm32 # . . call e8/call emit-string-literal-data/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # dump output {{{ #? # . write(2/stderr, "result: ^") #? # . . push args #? 68/push "result: ^"/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # . write-stream(2/stderr, _test-output-stream) #? # . . push args #? 68/push _test-output-stream/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write-stream/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # . write(2/stderr, "$\n") #? # . . push args #? 68/push "$\n"/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # }}} # . check-stream-equal(_test-output-stream, "3/imm32 61/a 62/b 63/c ", msg) # . . push args 68/push "F - test-emit-string-literal-data"/imm32 68/push "0x00000003/imm32 61/a 62/b 63/c "/imm32 68/push _test-output-stream/imm32 # . . call e8/call check-stream-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-emit-string-literal-data-empty: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # var slice/ecx = '""' 68/push 0/imm32/end 68/push 0/imm32/start 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # emit-string-literal-data(_test-output-stream, slice) # . . push args 51/push-ecx 68/push _test-output-stream/imm32 # . . call e8/call emit-string-literal-data/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # dump output {{{ #? # . write(2/stderr, "result: ^") #? # . . push args #? 68/push "result: ^"/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # . write-stream(2/stderr, _test-output-stream) #? # . . push args #? 68/push _test-output-stream/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write-stream/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # . write(2/stderr, "$\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 # . epilogue 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: # . prologue 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 # . epilogue 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: # . prologue 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 # . epilogue 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: # . prologue 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 # . epilogue 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: (addr buffered-file), word: (addr slice) # pseudocode # var slice: 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) # # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 50/push-eax 51/push-ecx 52/push-edx 53/push-ebx 56/push-esi # esi = word 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi # var curr/ecx: (addr byte) = word->start 8b/copy 0/mod/indirect 6/rm32/esi . . . 1/r32/ecx . . # copy *esi to ecx # var end/edx: (addr byte) = word->end 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 2/r32/edx 4/disp8 . # copy *(esi+4) to edx # var slice/ebx: slice = {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-!= $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-= $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-= $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 $emit-metadata:end: # . reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . 8/imm32 . # add to esp # . restore registers 5e/pop-to-esi 5b/pop-to-ebx 5a/pop-to-edx 59/pop-to-ecx 58/pop-to-eax # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-emit-metadata: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-output-buffered-file->buffer) # . . push args 68/push $_test-output-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # (eax..ecx) = "abc/def" b8/copy-to-eax "abc/def"/imm32 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx 05/add-to-eax 4/imm32 # var slice/ecx = {eax, ecx} 51/push-ecx 50/push-eax 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # emit-metadata(_test-output-buffered-file, slice) # . . push args 51/push-ecx 68/push _test-output-buffered-file/imm32 # . . call e8/call emit-metadata/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # flush(_test-output-buffered-file) # . . push args 68/push _test-output-buffered-file/imm32 # . . call e8/call flush/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-stream-equal(_test-output-stream, "/def", msg) # important that there's no leading space # . . push args 68/push "F - test-emit-metadata"/imm32 68/push "/def"/imm32 68/push _test-output-stream/imm32 # . . call e8/call check-stream-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-emit-metadata-none: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-output-buffered-file->buffer) # . . push args 68/push $_test-output-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # (eax..ecx) = "abc" b8/copy-to-eax "abc"/imm32 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx 05/add-to-eax 4/imm32 # var slice/ecx = {eax, ecx} 51/push-ecx 50/push-eax 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # emit-metadata(_test-output-buffered-file, slice) # . . push args 51/push-ecx 68/push _test-output-buffered-file/imm32 # . . call e8/call emit-metadata/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # flush(_test-output-buffered-file) # . . push args 68/push _test-output-buffered-file/imm32 # . . call e8/call flush/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-stream-equal(_test-output-stream, "", msg) # . . push args 68/push "F - test-emit-metadata-none"/imm32 68/push ""/imm32 68/push _test-output-stream/imm32 # . . call e8/call check-stream-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-emit-metadata-multiple: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-output-buffered-file->buffer) # . . push args 68/push $_test-output-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # (eax..ecx) = "abc/def/ghi" b8/copy-to-eax "abc/def/ghi"/imm32 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx 05/add-to-eax 4/imm32 # var slice/ecx = {eax, ecx} 51/push-ecx 50/push-eax 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # emit-metadata(_test-output-buffered-file, slice) # . . push args 51/push-ecx 68/push _test-output-buffered-file/imm32 # . . call e8/call emit-metadata/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # flush(_test-output-buffered-file) # . . push args 68/push _test-output-buffered-file/imm32 # . . call e8/call flush/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-stream-equal(_test-output-stream, "/def/ghi", msg) # important that there's no leading space # . . push args 68/push "F - test-emit-metadata-multiple"/imm32 68/push "/def/ghi"/imm32 68/push _test-output-stream/imm32 # . . call e8/call check-stream-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-emit-metadata-when-no-datum: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-output-buffered-file->buffer) # . . push args 68/push $_test-output-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # var slice/ecx = "/abc" b8/copy-to-eax "/abc"/imm32 # . push end/ecx 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx 51/push-ecx # . push curr/eax 05/add-to-eax 4/imm32 50/push-eax # . save stack pointer 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # emit-metadata(_test-output-buffered-file, slice) # . . push args 51/push-ecx 68/push _test-output-buffered-file/imm32 # . . call e8/call emit-metadata/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # flush(_test-output-buffered-file) # . . push args 68/push _test-output-buffered-file/imm32 # . . call e8/call flush/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-stream-equal(_test-output-stream, "/abc", msg) # nothing skipped # . . push args 68/push "F - test-emit-metadata-when-no-datum"/imm32 68/push "/abc"/imm32 68/push _test-output-stream/imm32 # . . call e8/call check-stream-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-emit-metadata-in-string-literal: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-output-buffered-file->buffer) # . . push args 68/push $_test-output-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # var slice/ecx = "\"abc/def\"/ghi" 68/push _test-slice-literal-string-with-limit/imm32 68/push _test-slice-literal-string/imm32/start 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # emit-metadata(_test-output-buffered-file, slice) # . . push args 51/push-ecx 68/push _test-output-buffered-file/imm32 # . . call e8/call emit-metadata/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # flush(_test-output-buffered-file) # . . push args 68/push _test-output-buffered-file/imm32 # . . call e8/call flush/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp #? # dump output {{{ #? # . write(2/stderr, "result: ^") #? # . . push args #? 68/push "result: ^"/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # . write-stream(2/stderr, _test-output-stream) #? # . . push args #? 68/push _test-output-stream/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write-stream/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp #? # . write(2/stderr, "$\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 # . epilogue 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: (addr byte), end: (addr byte) -> length/eax # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 51/push-ecx 52/push-edx 53/push-ebx # ecx = curr 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 1/r32/ecx 8/disp8 . # copy *(ebp+8) to ecx # edx = end 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx # var length/eax: int = 0 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax # var c/ebx: byte = 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-addr>= $string-length-at-start-of-slice:end/disp8 # c = *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 (c == '"') break 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x22/imm32/dquote # compare ebx 74/jump-if-= $string-length-at-start-of-slice:end/disp8 $string-length-at-start-of-slice:check-for-escape: # if (c == '\') escape next char 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x5c/imm32/backslash # compare ebx 75/jump-if-!= $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 # . epilogue 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: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # setup: (eax..ecx) = "\"abc\" def" b8/copy-to-eax "\"abc\" def"/imm32 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx 05/add-to-eax 4/imm32 # eax = 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 # . epilogue 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: # . prologue 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 # . epilogue 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 _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