# Read a text file containing whitespace-separated pairs of ascii hex bytes # from stdin, and convert them into binary bytes (octets) on stdout. Ignore # comments between '#' and newline. # # To run: # $ bootstrap/bootstrap translate [01]*.subx subx-params.subx hex.subx -o hex # $ echo '80 81 82 # comment' |bootstrap/bootstrap run hex |xxd - # Expected output: # 00000000: 8081 82 # # Only hex bytes and comments are permitted. Outside of comments all words # must be exactly 2 characters long and contain only characters [0-9a-f]. No # uppercase hex. == 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-hex-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-hex-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-hex-main:end/disp8 $subx-hex-main:interactive: # - otherwise convert stdin # . subx-hex(Stdin, Stdout, Stderr, 0) # . . push args 68/push 0/imm32/exit-descriptor 68/push Stderr/imm32 68/push Stdout/imm32 68/push Stdin/imm32 # . . call e8/call subx-hex/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-hex-main:end: e8/call syscall_exit/disp32 # the main entry point subx-hex: # in: (addr buffered-file), out: (addr buffered-file), err: (addr buffered-file), ed: (addr exit-descriptor) # pseudocode: # while true # eax = convert-next-octet(in, err, ed) # if (eax == Eof) break # write-byte-buffered(out, AL) # flush(out) # # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 50/push-eax $subx-hex:loop: # eax = convert-next-octet(in, err, ed) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x14/disp8 . # push *(ebp+20) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call convert-next-octet/disp32 # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # if (eax == Eof) break 3d/compare-eax-and 0xffffffff/imm32/Eof 74/jump-if-= $subx-hex:loop-end/disp8 # write-byte-buffered(out, AL) # . . push args 50/push-eax ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) # . . call e8/call write-byte-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # loop eb/jump $subx-hex:loop/disp8 $subx-hex:loop-end: # flush(out) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) # . . call e8/call flush/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp $subx-hex:end: # . restore registers 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 # read bytes from 'in' until a sequence of two lowercase hex (0-9, a-f) bytes # skip spaces and newlines # on '#' skip bytes until newline # raise an error and abort on all other unexpected bytes # return in eax an _octet_ containing the binary value of the two hex characters # return Eof on reaching end of file convert-next-octet: # in: (addr buffered-file), err: (addr buffered-file), ed: (addr exit-descriptor) -> byte-or-Eof/eax # pseudocode: # eax = scan-next-byte(in, err, ed) # if (eax == Eof) return # ecx = from-hex-char(eax) # eax = scan-next-byte(in, err, ed) # if (eax == Eof) error("partial byte found.") # eax = from-hex-char(eax) # eax = (ecx << 4) | eax # return # # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 51/push-ecx # eax = scan-next-byte(in, err, ed) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call scan-next-byte/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # if (eax == Eof) return 3d/compare-eax-and 0xffffffff/imm32/Eof 74/jump-if-= $convert-next-octet:end/disp8 # eax = from-hex-char(eax) e8/call from-hex-char/disp32 # ecx = eax 89/copy 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # copy eax to ecx # eax = scan-next-byte(in, err, ed) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call scan-next-byte/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # if (eax == Eof) error(ed, err, "partial byte found.") 3d/compare-eax-and 0xffffffff/imm32/Eof 75/jump-if-!= $convert-next-octet:convert/disp8 # . error-byte(ed, err, msg, '.') # reusing error-byte to avoid creating _yet_ another helper # . . push args 68/push 0x2e/imm32/period/dummy 68/push "convert-next-octet: partial byte found"/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16) # . . call e8/call error-byte/disp32 # never returns $convert-next-octet:convert: # eax = from-hex-char(eax) e8/call from-hex-char/disp32 # eax = (ecx << 4) | eax # . ecx <<= 4 c1/shift 4/subop/left 3/mod/direct 1/rm32/ecx . . . . . 4/imm8 # shift ecx left by 4 bits # . eax |= ecx 09/or 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # eax = bitwise OR with ecx $convert-next-octet:end: # . restore registers 59/pop-to-ecx # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-convert-next-octet: # - check that the first two bytes of the input are assembled into the resulting octet # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to "abc" # . write(_test-stream, "abc") # . . push args 68/push "abc"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'convert-next-octet' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-convert-next-octet 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = convert-next-octet(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call convert-next-octet/disp32 # registers except esp may be clobbered at this point # pop args to convert-next-octet # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that convert-next-octet didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-convert-next-octet: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-convert-next-octet:end/disp8 # check-ints-equal(eax, 0xab, msg) # . . push args 68/push "F - test-convert-next-octet"/imm32 68/push 0xab/imm32/ab 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 $test-convert-next-octet:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-convert-next-octet-handles-Eof: # - check that reaching end of file returns Eof # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 # don't initialize '_test-stream' # initialize exit-descriptor 'ed' for the call to 'convert-next-octet' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-convert-next-octet 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = convert-next-octet(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call convert-next-octet/disp32 # registers except esp may be clobbered at this point # pop args to convert-next-octet # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that convert-next-octet didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-convert-next-octet: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-convert-next-octet-handles-Eof:end/disp8 # check-ints-equal(eax, Eof, msg) # . . push args 68/push "F - test-convert-next-octet-handles-Eof"/imm32 68/push 0xffffffff/imm32/Eof 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 $test-convert-next-octet-handles-Eof:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-convert-next-octet-aborts-on-single-hex-byte: # - check that a single unaccompanied hex byte aborts # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to "a" # . write(_test-stream, "a") # . . push args 68/push "a"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'convert-next-octet' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-convert-next-octet 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = convert-next-octet(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call convert-next-octet/disp32 # registers except esp may be clobbered at this point # pop args to convert-next-octet # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that convert-next-octet aborted # . check-ints-equal(ed->value, 2, msg) # . . push args 68/push "F - test-convert-next-octet-aborts-on-single-hex-byte: unexpected abort"/imm32 68/push 2/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp $test-convert-next-octet-aborts-on-single-hex-byte:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return # read whitespace until a hex byte, and return it # return Eof if file ends without finding a hex byte # on '#' skip all bytes until newline # abort on any other byte scan-next-byte: # in: (addr buffered-file), err: (addr buffered-file), ed: (addr exit-descriptor) -> byte-or-Eof/eax # pseudocode: # while true # eax = read-byte-buffered(in) # if (eax == Eof) return eax # if (hex-digit?(eax)) return eax # if (eax == ' ' or '\t' or '\n') continue # if (eax == '#') skip-until-newline(in) # else error-byte(ed, err, "invalid byte: " eax) # # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers $scan-next-byte:loop: # eax = read-byte-buffered(in) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call read-byte-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # if (eax == Eof) return eax 3d/compare-with-eax 0xffffffff/imm32/Eof 74/jump-if-= $scan-next-byte:end/disp8 # if (hex-digit?(eax)) return eax # . save eax for now 50/push-eax # . hex-digit?(eax) # . . push args 50/push-eax # . . call e8/call hex-digit?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . compare with 'false' 3d/compare-with-eax 0/imm32/false # . restore eax (does not affect flags) 58/pop-to-eax # . check whether to return 75/jump-if-!= $scan-next-byte:end/disp8 $scan-next-byte:check1: # if (eax == ' ') continue 3d/compare-eax-and 0x20/imm32/space 74/jump-if-= $scan-next-byte:loop/disp8 # if (eax == '\t') continue 3d/compare-eax-and 9/imm32/tab 74/jump-if-= $scan-next-byte:loop/disp8 # if (eax == '\n') continue 3d/compare-eax-and 0xa/imm32/newline 74/jump-if-= $scan-next-byte:loop/disp8 $scan-next-byte:check2: # if (eax == '#') skip-until-newline(in) 3d/compare-with-eax 0x23/imm32/hash 75/jump-if-!= $scan-next-byte:check3/disp8 # . skip-until-newline(in) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call skip-until-newline/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp eb/jump $scan-next-byte:loop/disp8 $scan-next-byte:check3: # otherwise error-byte(ed, err, msg, eax) # . . push args 50/push-eax 68/push "scan-next-byte: invalid byte"/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16) # . . call e8/call error-byte/disp32 # never returns $scan-next-byte:end: # . restore registers # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-scan-next-byte: # - check that the first byte of the input is returned # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to "abc" # . write(_test-stream, "abc") # . . push args 68/push "abc"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'scan-next-byte' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-scan-next-byte 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = scan-next-byte(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call scan-next-byte/disp32 # registers except esp may be clobbered at this point # pop args to scan-next-byte # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that scan-next-byte didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-scan-next-byte: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-scan-next-byte:end/disp8 # check-ints-equal(eax, 0x61/a, msg) # . . push args 68/push "F - test-scan-next-byte"/imm32 68/push 0x61/imm32/a 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 $test-scan-next-byte:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-scan-next-byte-skips-whitespace: # - check that the first byte after whitespace is returned # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to input with leading whitespace # . write(_test-stream, text) # . . push args 68/push " abc"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'scan-next-byte' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-scan-next-byte 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = scan-next-byte(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call scan-next-byte/disp32 # registers except esp may be clobbered at this point # pop args to scan-next-byte # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that scan-next-byte didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-scan-next-byte-skips-whitespace: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-scan-next-byte-skips-whitespace:end/disp8 # check-ints-equal(eax, 0x61/a, msg) # . . push args 68/push "F - test-scan-next-byte-skips-whitespace"/imm32 68/push 0x61/imm32/a 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 $test-scan-next-byte-skips-whitespace:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-scan-next-byte-skips-comment: # - check that the first byte after a comment (and newline) is returned # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to input with leading comment # . write(_test-stream, comment) # . . push args 68/push "#x\n"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . write(_test-stream, real text) # . . push args 68/push "ab"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'scan-next-byte' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-scan-next-byte 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = scan-next-byte(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call scan-next-byte/disp32 # registers except esp may be clobbered at this point # pop args to scan-next-byte # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that scan-next-byte didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-scan-next-byte-skips-comment: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-scan-next-byte-skips-comment:end/disp8 # check-ints-equal(eax, 0x61/a, msg) # . . push args 68/push "F - test-scan-next-byte-skips-comment"/imm32 68/push 0x61/imm32/a 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 $test-scan-next-byte-skips-comment:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-scan-next-byte-skips-comment-and-whitespace: # - check that the first byte after a comment and any further whitespace is returned # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to input with leading comment and more whitespace after newline # . write(_test-stream, comment) # . . push args 68/push "#x\n"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . write(_test-stream, real text) # . . push args 68/push " ab"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'scan-next-byte' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-scan-next-byte 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = scan-next-byte(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call scan-next-byte/disp32 # registers except esp may be clobbered at this point # pop args to scan-next-byte # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that scan-next-byte didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-scan-next-byte-skips-comment-and-whitespace: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-scan-next-byte-skips-comment-and-whitespace:end/disp8 # check-ints-equal(eax, 0x61/a, msg) # . . push args 68/push "F - test-scan-next-byte-skips-comment-and-whitespace"/imm32 68/push 0x61/imm32/a 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 $test-scan-next-byte-skips-comment-and-whitespace:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-scan-next-byte-skips-whitespace-and-comment: # - check that the first byte after any whitespace and comments is returned # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . 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-error-stream) # . . push args 68/push _test-error-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-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to input with leading whitespace and comment # . write(_test-stream, comment) # . . push args 68/push " #x\n"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . write(_test-stream, real text) # . . push args 68/push "ab"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'scan-next-byte' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-scan-next-byte 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = scan-next-byte(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call scan-next-byte/disp32 # registers except esp may be clobbered at this point # pop args to scan-next-byte # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that scan-next-byte didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-scan-next-byte-skips-whitespace-and-comment: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-scan-next-byte-skips-whitespace-and-comment:end/disp8 # check-ints-equal(eax, 0x61/a, msg) # . . push args 68/push "F - test-scan-next-byte-skips-whitespace-and-comment"/imm32 68/push 0x61/imm32/a 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 $test-scan-next-byte-skips-whitespace-and-comment:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-scan-next-byte-reads-final-byte: # - check that the final byte in input is returned # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to input with single character # . write(_test-stream, character) # . . push args 68/push "a"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'scan-next-byte' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-scan-next-byte 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = scan-next-byte(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call scan-next-byte/disp32 # registers except esp may be clobbered at this point # pop args to scan-next-byte # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that scan-next-byte didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-scan-next-byte-reads-final-byte: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-scan-next-byte-reads-final-byte:end/disp8 # check-ints-equal(eax, 0x61/a, msg) # . . push args 68/push "F - test-scan-next-byte-reads-final-byte"/imm32 68/push 0x61/imm32/a 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 $test-scan-next-byte-reads-final-byte:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-scan-next-byte-handles-Eof: # - check that the right sentinel value is returned when there's no data remaining to be read # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 # leave '_test-stream' empty # initialize exit-descriptor 'ed' for the call to 'scan-next-byte' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-scan-next-byte 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = scan-next-byte(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call scan-next-byte/disp32 # registers except esp may be clobbered at this point # pop args to scan-next-byte # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that scan-next-byte didn't abort # . check-ints-equal(ed->value, 0, msg) # . . push args 68/push "F - test-scan-next-byte-handles-Eof: unexpected abort"/imm32 68/push 0/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # return if abort 81 7/subop/compare 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 0/imm32 # compare *(ecx+4) 75/jump-if-!= $test-scan-next-byte-handles-Eof:end/disp8 # check-ints-equal(eax, Eof, msg) # . . push args 68/push "F - test-scan-next-byte-handles-Eof"/imm32 68/push 0xffffffff/imm32/Eof 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 $test-scan-next-byte-handles-Eof:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return test-scan-next-byte-aborts-on-invalid-byte: # - check that the a bad byte immediately aborts # This test uses exit-descriptors. Use ebp for setting up local variables. 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear all streams # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-buffered-file->buffer/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-error-stream) # . . push args 68/push _test-error-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-error-buffered-file->buffer) # . . push args 68/push $_test-error-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 '_test-stream' to "x" # . write(_test-stream, "x") # . . push args 68/push "x"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'scan-next-byte' below # . var ed/ecx: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # . tailor-exit-descriptor(ed, 12) # . . push args 68/push 0xc/imm32/nbytes-of-args-for-scan-next-byte 51/push-ecx/ed # . . call e8/call tailor-exit-descriptor/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = scan-next-byte(_test-buffered-file, _test-error-buffered-file, ed) # . . push args 51/push-ecx/ed 68/push _test-error-buffered-file/imm32 68/push _test-buffered-file/imm32 # . . call e8/call scan-next-byte/disp32 # registers except esp may be clobbered at this point # pop args to scan-next-byte # . . discard first 2 args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . . restore ed 59/pop-to-ecx # check that scan-next-byte aborted # . check-ints-equal(ed->value, 2, msg) # . . push args 68/push "F - test-scan-next-byte-aborts-on-invalid-byte"/imm32 68/push 2/imm32 # . . push ed->value ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx . . . . 4/disp8 . # push *(ecx+4) # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp $test-scan-next-byte-aborts-on-invalid-byte:end: # . epilogue # don't restore esp from ebp; manually reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp 5d/pop-to-ebp c3/return skip-until-newline: # in: (addr buffered-file) # pseudocode: # push eax # while true # eax = read-byte-buffered(in) # if (eax == Eof) break # if (eax == 0x0a) break # pop eax # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 50/push-eax $skip-until-newline:loop: # . eax = read-byte-buffered(in) # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call read-byte-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . if (eax == Eof) break 3d/compare-eax-and 0xffffffff/imm32/Eof 74/jump-if-= $skip-until-newline:end/disp8 # . if (eax != 0xa/newline) loop 3d/compare-eax-and 0xa/imm32/newline 75/jump-if-!= $skip-until-newline:loop/disp8 $skip-until-newline:end: # . restore registers 58/pop-to-eax # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-12-01 22:33:24 +0000
2/esp . . . . . 4/imm32 # add to esp # . clear-stream($_test-buffered-file->buffer) # . . push args 68/push $_test-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 '_test-stream' to "abc\nde" # . write(_test-stream, "abc") # . . push args 68/push "abc\n"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # . write(_test-stream, "de") # . . push args 68/push "de"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # skip-until-newline(_test-buffered-file) # . . push args 68/push _test-buffered-file/imm32 # . . call e8/call skip-until-newline/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # check-ints-equal(_test-buffered-file->read, 4, msg) # . . push args 68/push "F - test-skip-until-newline"/imm32 68/push 4/imm32 b8/copy-to-eax _test-buffered-file/imm32 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 # . end c3/return # . . vim:nowrap:textwidth=0