# Read a series of segments from stdin and concatenate segments with the same # name on stdout. # # Segments are emitted in order of first encounter. # # Drop lines that are all comments. They could get misleading after assortment # because we don't know if they refer to the line above or the line below. # # To run (from the subx/ directory): # $ ./subx translate *.subx apps/assort.subx -o apps/assort # $ cat x # == code # abc # == code # def # $ cat x |./subx run apps/assort # == code # abc # def == 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-convert/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) -> # pseudocode: # var table : (address stream) = new-stream(10 rows, 8 bytes each) # read-segments(in, table) # write-segments(out, table) # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX # var table/ECX : (address stream byte) = stream(10 * 8) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x50/imm32 # subtract from ESP 68/push 0x50/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # clear-stream(table) # . . push args 51/push-ECX # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP $convert:read: # read-segments(in, table) # . . push args 51/push-ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call read-segments/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $convert:write: # write-segments(out, table) # . . push args 51/push-ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call write-segments/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $convert:end: # . reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x5c/imm32 # add to ESP # . restore registers 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return test-convert: # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # setup # . clear-stream(_test-input-stream) # . . push args 68/push _test-input-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # . clear-stream(_test-input-buffered-file+4) # . . push args b8/copy-to-EAX _test-input-buffered-file/imm32 05/add-to-EAX 4/imm32 50/push-EAX # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # . clear-stream(_test-output-stream) # . . push args 68/push _test-output-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # . clear-stream(_test-output-buffered-file+4) # . . push args b8/copy-to-EAX _test-output-buffered-file/imm32 05/add-to-EAX 4/imm32 50/push-EAX # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # initialize input (meta comments in parens) # # comment 1 # # comment 2 indented # == code (new segment) # # comment 3 inside a segment # 1 # (empty line) # 2 3 # comment 4 inline with other contents # == data (new segment) # 4 5/imm32 # == code (existing segment but non-contiguous with previous iteration) # 6 7 # 8 9 (multiple lines) # == code (existing segment contiguous with previous iteration) # 10 11 # . write(_test-input-stream, "# comment 1") # . . push args 68/push "# comment 1"/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") # . . 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, " # comment 2 indented") # . . push args 68/push " # comment 2 indented"/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") # . . 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, "== code") # . . push args 68/push "== code"/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") # . . 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, "# comment 3 inside a segment") # . . push args 68/push "# comment 3 inside a segment"/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") # . . 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, "1") # . . push args 68/push "1"/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") # . . 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, "\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") # . . push args 68/push "2 3 # comment 4 inline with other contents"/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") # . . 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, "== data") # . . push args 68/push "== data"/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") # . . 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, "4 5/imm32") # . . push args 68/push "4 5/imm32"/imm32 68/push _test-input-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write(_test-input-stream, "\n") # . . 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, "== code") # . . push args 68/push "== code"/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") # . . 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, "6 7") # . . push args 68/push "6 7"/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") # . . 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, "8 9") # . . push args 68/push "8 9"/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") # . . 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, "== code") # . . push args 68/push "== code"/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") # . . 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, "10 11") # . . push args 68/push "10 11"/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") # . . 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 # 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 # check output # == code # 1 # 2 3 # comment 4 inline with other contents # 6 7 # 8 9 # 10 11 # == data # 4 5/imm32 #? # 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, "$") #? # . . push args #? 68/push "$"/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(2/stderr, "\n") #? # . . push args #? 68/push Newline/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 #? # }}} # . 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-next-stream-line-equal(_test-output-stream, "== code", msg) # . . push args 68/push "F - test-convert/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", msg) # . . push args 68/push "F - test-convert/1"/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, "2 3 # comment 4 inline with other contents", msg) # . . push args 68/push "F - test-convert/2"/imm32 68/push "2 3 # comment 4 inline with other contents"/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, "6 7", msg) # . . push args 68/push "F - test-convert/3"/imm32 68/push "6 7"/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, "8 9", msg) # . . push args 68/push "F - test-convert/4"/imm32 68/push "8 9"/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, "10 11", msg) # . . push args 68/push "F - test-convert/5"/imm32 68/push "10 11"/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/6"/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, "4 5/imm32", msg) # . . push args 68/push "F - test-convert/7"/imm32 68/push "4 5/imm32"/imm32 68/push _test-output-stream/imm32 # . . call e8/call check-next-stream-line-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return read-segments: # in : (address buffered-file), table : (address stream row) # pseudocode: # var curr-segment = null # var line = new-stream(512, 1) # while true # clear-stream(line) # read-line(in, line) # if (line->write == 0) break # end of file # var word-slice = next-word(line) # if slice-empty?(word-slice) # whitespace # continue # if slice-starts-with?(word-slice, "#") # comment # continue # if slice-equal?(word-slice, "==") # var segment-name = next-word(line) # curr-segment = get-or-insert-segment(table, segment-name, Segment-size) # else # rewind-stream(line) # write-stream(curr-segment, line) # abort if curr-segment overflows # # word-slice and segment-name are both slices with disjoint lifetimes, so # we'll use the same address for them. # # registers: # line: ECX # word-slice and segment-name: EDX # segment-name and curr-segment: EBX # word-slice->start: ESI # temporary: EAX # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 50/push-EAX 51/push-ECX 52/push-EDX 53/push-EBX 56/push-ESI # var line/ECX : (address stream byte) = stream(512) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x200/imm32 # subtract from ESP 68/push 0x200/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # var word-slice/EDX = {0, 0} 68/push 0/imm32/end 68/push 0/imm32/curr 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX $read-segments:loop: # clear-stream(line) # . . push args 51/push-ECX # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # read-line(in, line) # . . push args 51/push-ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call read-line/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $read-segments:check0: # if (line->write == 0) break 81 7/subop/compare 0/mod/indirect 1/rm32/ECX . . . . . 0/imm32 # compare *ECX 0f 84/jump-if-equal $read-segments:break/disp32 #? # dump line {{{ #? # . write(2/stderr, "LL: ") #? # . . push args #? 68/push "LL: "/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP #? # . write-stream(2/stderr, line) #? # . . push args #? 51/push-ECX #? 68/push 2/imm32/stderr #? # . . call #? e8/call write-stream/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP #? # . write(2/stderr, "$") #? # . . push args #? 68/push "$"/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(2/stderr, "\n") #? # . . push args #? 68/push Newline/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 #? # }}} # next-word(line, word-slice) # . . push args 52/push-EDX 51/push-ECX # . . call e8/call next-word/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $read-segments:check1: # if (slice-empty?(word-slice)) continue # . EAX = slice-empty?(word-slice) # . . push args 52/push-EDX # . . call e8/call slice-empty?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # . if (EAX != 0) continue 3d/compare-EAX-and 0/imm32 0f 85/jump-if-not-equal $read-segments:loop/disp32 $read-segments:check-for-comment: # if slice-starts-with?(word-slice, "#") # . start/ESI = word-slice->start 8b/copy 0/mod/indirect 2/rm32/EDX . . . 6/r32/ESI . . # copy *ECX to ESI # . c/EAX = *start 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX 8a/copy-byte 0/mod/indirect 6/rm32/ESI . . . 0/r32/AL . . # copy byte at *ESI to AL # . if (EAX == '#') continue 3d/compare-EAX-and 0x23/imm32/hash 0f 84/jump-if-equal $read-segments:loop/disp32 $read-segments:check-for-segment-header: #? # dump word-slice {{{ #? # . write(2/stderr, "AA: ") #? # . . push args #? 68/push "AA: "/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP #? # . clear-stream(Stderr+4) #? # . . push args #? b8/copy-to-EAX Stderr/imm32 #? 05/add-to-EAX 4/imm32 #? 50/push-EAX #? # . . call #? e8/call clear-stream/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP #? # . write-slice(Stderr, word-slice) #? # . . push args #? 52/push-EDX #? 68/push Stderr/imm32 #? # . . call #? e8/call write-slice/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP #? # . flush(Stderr) #? # . . push args #? 68/push Stderr/imm32 #? # . . call #? e8/call flush/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP #? # . write(2/stderr, "$") #? # . . push args #? 68/push "$"/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(2/stderr, "\n") #? # . . push args #? 68/push Newline/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 #? # }}} # if slice-equal?(word-slice, "==") # segment-name = next-word(line) # curr-segment = get-or-insert(table, segment-name) # . EAX = slice-equal?(word-slice, "==") # . . push args 68/push "=="/imm32 52/push-EDX # . . call e8/call slice-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX == 0) goto check3 81 7/subop/compare 3/mod/direct 0/rm32/EAX . . . . . 0/imm32 # compare EAX 0f 84/jump-if-equal $read-segments:regular-line/disp32 # . next-word(line, segment-name) # . . push args 52/push-EDX 51/push-ECX # . . call e8/call next-word/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP #? # dump segment name {{{ #? # . write(2/stderr, "AA: ") #? # . . push args #? 68/push "AA: "/imm32 #? 68/push 2/imm32/stderr #? # . . call #? e8/call write/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP #? # . clear-stream(Stderr+4) #? # . . push args #? b8/copy-to-EAX Stderr/imm32 #? 05/add-to-EAX 4/imm32 #? 50/push-EAX #? # . . call #? e8/call clear-stream/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP #? # . write-slice(Stderr, word-slice) #? # . . push args #? 52/push-EDX #? 68/push Stderr/imm32 #? # . . call #? e8/call write-slice/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP #? # . flush(Stderr) #? # . . push args #? 68/push Stderr/imm32 #? # . . call #? e8/call flush/disp32 #? # . . discard args #? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP #? # . write(2/stderr, "$") #? # . . push args #? 68/push "$"/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(2/stderr, "\n") #? # . . push args #? 68/push Newline/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 #? # }}} # . EAX = get-or-insert-segment(table, segment-name, Segment-size) # . . push args ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Segment-size/disp32 # push *Segment-size 52/push-EDX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call get-or-insert-segment/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # . curr-segment = EAX 89/copy 3/mod/direct 3/rm32/EBX . . . 0/r32/EAX . . # copy EAX to EBX # . continue e9/jump $read-segments:loop/disp32 $read-segments:regular-line: # rewind-stream(line) # . . push args 51/push-ECX # . . call e8/call rewind-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # write-stream(curr-segment, line) # . . push args 51/push-ECX 53/push-EBX # . . call e8/call write-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # loop e9/jump $read-segments:loop/disp32 $read-segments:break: $read-segments:end: # . reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x214/imm32 # add to ESP # . restore registers 5e/pop-to-ESI 5b/pop-to-EBX 5a/pop-to-EDX 59/pop-to-ECX 58/pop-to-EAX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return write-segments: # out : (address buffered-file), table : (address stream row) # pseudocode: # var curr = table->data # var max = table->data + table->write # while curr < max # name = table[i].name # print out, "== $name\n" # stream = table[i].stream # write-stream-data(out, stream) # curr += 8 # flush(out) # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 50/push-EAX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI # write/EDX = table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX # curr/ESI = table->data 81 0/subop/add 3/mod/direct 6/rm32/ESI . . . . . 0xc/imm32 # add to EAX # max/EDX = curr + write 01/add 3/mod/direct 2/rm32/EDX . . . 6/r32/ESI . . # add ESI to EDX $write-segments:loop: # if (curr >= max) break 39/compare 3/mod/direct 6/rm32/ESI . . . 2/r32/EDX . . # compare ESI with EDX 7d/jump-if-greater-or-equal $write-segments:break/disp8 # name/EAX = table[i].name 8b/copy 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # copy *ESI to EAX # print out, "== $name\n" # . write-buffered(out, "== ") # . . push args 68/push "== "/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write-buffered(out, name) # . . push args 50/push-EAX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call write-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . write-buffered(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-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # stream/EAX = table[i].stream 8b/copy 1/mod/*+disp8 6/rm32/ESI . . . 0/r32/EAX 4/disp8 . # copy *(ESI+4) to EAX # write-stream-data(out, stream) # . . push args 50/push-EAX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call write-stream-data/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $write-segments:continue: # curr += 8 81 0/subop/add 3/mod/direct 6/rm32/ESI . . . . . 8/imm32 # add to ESI eb/jump $write-segments:loop/disp8 $write-segments:break: # flush(out) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call flush/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP $write-segments:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 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 ## helpers # TODO: pass in an allocation descriptor get-or-insert-segment: # table : (address stream row), s : (address slice), n : int -> EAX : (address stream) # pseudocode: # curr = table->data # max = &table->data[table->write] # while curr < max # if slice-equal?(s, *curr) # return *(curr+4) # curr += 8 # if table->write < table->length # *max = slice-to-string(Heap, s) # result = new-stream(Heap, n, 1) # *(max+4) = result # table->write += 8 # return result # return 0 # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 51/push-ECX 52/push-EDX 56/push-ESI # ESI = table 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # curr/ECX = table->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 0xc/disp8 . # copy ESI+12 to ECX # max/EDX = table->data + table->write 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX 8d/copy-address 0/mod/indirect 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX . . # copy ECX+EDX to EDX $get-or-insert-segment:search-loop: # if (curr >= max) break 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX and EDX 7d/jump-if-greater-or-equal $get-or-insert-segment:not-found/disp8 # if (slice-equal?(s, *curr)) return *(curr+4) # . EAX = slice-equal?(s, *curr) # . . push args ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call slice-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX != 0) return EAX = *(curr+4) 3d/compare-EAX-and 0/imm32 74/jump-if-equal $get-or-insert-segment:mismatch/disp8 8b/copy 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy *(ECX+4) to EAX eb/jump $get-or-insert-segment:end/disp8 $get-or-insert-segment:mismatch: # curr += 8 81 0/subop/add 3/mod/direct 1/rm32/ECX . . . . . 8/imm32 # add to ECX # loop eb/jump $get-or-insert-segment:search-loop/disp8 $get-or-insert-segment:not-found: # result/EAX = 0 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX # if (table->write >= table->length) abort 8b/copy 0/mod/indirect 6/rm32/ESI . . . 1/r32/ECX . . # copy *ESI to ECX 3b/compare 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 8/disp8 . # compare ECX with *(ESI+8) 7d/jump-if-greater-or-equal $get-or-insert-segment:abort/disp8 # *max = slice-to-string(Heap, s) # . EAX = slice-to-string(Heap, s) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) 68/push Heap/imm32 # . . call e8/call slice-to-string/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . *max = EAX 89/copy 0/mod/indirect 2/rm32/EDX . . . 0/r32/EAX . . # copy EAX to *EDX # result/EAX = new-stream(Heap, n, 1) # . . push args 68/push 1/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) 68/push Heap/imm32 # . . call e8/call new-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # *(max+4) = result 89/copy 1/mod/*+disp8 2/rm32/EDX . . . 0/r32/EAX 4/disp8 . # copy EAX to *(EDX+4) # table->write += 8 81 0/subop/add 0/mod/indirect 6/rm32/ESI . . . . . 8/imm32 # add to *ESI $get-or-insert-segment:end: # . restore registers 5e/pop-to-ESI 5a/pop-to-EDX 59/pop-to-ECX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return $get-or-insert-segment:abort: # . _write(2/stderr, error) # . . push args 68/push "get-or-insert-segment: too many segments"/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 # . syscall(exit, 1) bb/copy-to-EBX 1/imm32 b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 # never gets here test-get-or-insert-segment: # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # var table/ECX : (address stream byte) = stream(2 * 8) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # subtract from ESP 68/push 0x10/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # EDX : (address slice) = "code" 68/push _test-code-segment-end/imm32/end 68/push _test-code-segment/imm32/start 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX $test-get-or-insert-segment:first-call: # - start with an empty table, insert one segment, verify that it was inserted # segment/EAX = get-or-insert-segment(table, "code" slice, 10) # . . push args 68/push 0xa/imm32/segment-length 52/push-EDX 51/push-ECX # . . call e8/call get-or-insert-segment/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # save segment 50/push-EAX # if (segment != 0) goto next check 3d/compare-EAX-and 0/imm32 75/jump-if-not-equal $test-get-or-insert-segment:check1/disp8 # fail test # . _write(2/stderr, msg) # . . push args 68/push "F - test-get-or-insert-segment/0"/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(2/stderr, Newline) # . . push args 68/push Newline/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 # . increment Num-test-failures ff 0/subop/increment 0/mod/indirect 5/rm32/.disp32 . . . Num-test-failures/disp32 # increment *Num-test-failures e9/jump $test-get-or-insert-segment:end/disp32 $test-get-or-insert-segment:check1: # check-ints-equal(segment->length, 10, msg) # . . push args 68/push "F - test-get-or-insert-segment/1"/imm32 68/push 0xa/imm32/segment-length ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX . . . . 8/disp8 . # push *(EAX+8) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-insert-segment:check2: # check-ints-equal(table->write, rowsize = 8, msg) # . . push args 68/push "F - test-get-or-insert-segment/2"/imm32 68/push 8/imm32/row-size ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # EAX = string-equal?(*table->data, "code") # . . push args 68/push "code"/imm32 ff 6/subop/push 1/mod/*+disp8 1/rm32/ECX . . . . 0xc/disp8 . # push *(ECX+12) # . . call e8/call string-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # check-ints-equal(EAX, 1, msg) # . . push args 68/push "F - test-get-or-insert-segment/3"/imm32 68/push 1/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 $test-get-or-insert-segment:check3: # stream/EAX = *(table->data+4) 8b/copy 1/mod/*+disp8 1/rm32/ECX . . . 0/r32/EAX 0x10/disp8 . # copy *(ECX+16) to EAX # check-ints-equal(stream->length, 10, msg) # . . push args 68/push "F - test-get-or-insert-segment/4"/imm32 68/push 0xa/imm32/segment-size ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX . . . . 8/disp8 . # push *(EAX+8) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-insert-segment:second-call: # - insert the same segment name again, verify that it was reused # segment2/EAX = get-or-insert-segment(table, "code" slice, 8) # . . push args 68/push 8/imm32/segment-length 52/push-EDX 51/push-ECX # . . call e8/call get-or-insert-segment/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # restore old segment1 5a/pop-to-EDX # check-ints-equal(segment2/EAX, segment1/EDX, msg) # . . push args 68/push "F - test-get-or-insert-segment/5"/imm32 52/push-EDX 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 # no change to table size # . check-ints-equal(table->write, rowsize = 8, msg) # . . push args 68/push "F - test-get-or-insert-segment/6"/imm32 68/push 8/imm32/row-size ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-insert-segment:third-call: # - insert a new segment name, verify that it was inserted # EDX : (address slice) = "data" c7 0/subop/copy 0/mod/indirect 2/rm32/EDX . . . . . _test-data-segment/imm32 # copy to *EDX c7 0/subop/copy 1/mod/*+disp8 2/rm32/EDX . . . . 4/disp8 _test-data-segment-end/imm32 # copy to *(EDX+4) # segment2/EAX = get-or-insert-segment(table, "data" slice, 8) # . . push args 68/push 8/imm32/segment-length 52/push-EDX 51/push-ECX # . . call e8/call get-or-insert-segment/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # table gets a new row # . check-ints-equal(table->write, 2 rows = 16, msg) # . . push args 68/push "F - test-get-or-insert-segment/7"/imm32 68/push 0x10/imm32/two-rows ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $test-get-or-insert-segment:end: # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return # write an entire stream's contents to a buffered-file # ways to do this: # - construct a 'maximal slice' and pass it to write-slice # - flush the buffered-file and pass the stream directly to its fd (disabling buffering) # we'll go with the first way for now write-stream-data: # f : (address buffered-file), s : (address stream) -> # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 50/push-EAX 51/push-ECX 56/push-ESI # ESI = s 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI # var slice/ECX = {s->data, s->data + s->write} # . push s->data + s->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 50/push-EAX # . push s->data 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 0/r32/EAX 0xc/disp8 . # copy ESI+12 to EAX 50/push-EAX # . ECX = ESP 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # write-slice(f, slice) # . . push args 51/push-ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call write-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $write-stream-data:end: # . restore locals 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . restore registers 5e/pop-to-ESI 59/pop-to-ECX 58/pop-to-EAX # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return test-write-stream-data: # . 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 # . clear-stream(_test-buffered-file+4) # . . push args b8/copy-to-EAX _test-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-tmp-stream) # . . push args 68/push _test-tmp-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 # initialize input # . write(_test-tmp-stream, "abcd") # . . push args 68/push "abcd"/imm32 68/push _test-tmp-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-stream-data(_test-buffered-file, _test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 68/push _test-buffered-file/imm32 # . . call e8/call write-stream-data/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # check that the write happened as expected # . flush(_test-buffered-file) # . . push args 68/push _test-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-stream, "abcd", msg) # . . push args 68/push "F - test-write-stream-data"/imm32 68/push "abcd"/imm32 68/push _test-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 == data _test-input-stream: # current write index 0/imm32 # current read index 0/imm32 # length 0x100/imm32 # 256 bytes # data (16 lines x 16 bytes/line) 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 # a test buffered file for _test-input-stream _test-input-buffered-file: # file descriptor or (address stream) _test-input-stream/imm32 # current write index 0/imm32 # current read index 0/imm32 # length 6/imm32 # data 00 00 00 00 00 00 # 6 bytes _test-output-stream: # current write index 0/imm32 # current read index 0/imm32 # length 0x100/imm32 # 256 bytes # data (16 lines x 16 bytes/line) 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 # a test buffered file for _test-output-stream _test-output-buffered-file: # file descriptor or (address stream) _test-output-stream/imm32 # current write index 0/imm32 # current read index 0/imm32 # length 6/imm32 # data 00 00 00 00 00 00 # 6 bytes _test-code-segment: 63/c 6f/o 64/d 65/e _test-code-segment-end: _test-data-segment: 64/d 61/a 74/t 61/a _test-data-segment-end: Segment-size: 0x1000/imm32/4KB # . . vim:nowrap:textwidth=0