# 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) -> <void>
# 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 comments")
#? # . . push args
#? 68/push "2 3 # comment 4 inline with other comments"/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 "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, "== 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
#? #? # debug print {{{
#? #? # . 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-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-code-and-data-segments/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-code-and-data-segments/1"/imm32
#? 68/push "e8 20 00 00 00 # e8/call 20/disp32"/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-code-and-data-segments/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-code-and-data-segments/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-code-and-data-segments/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-code-and-data-segments/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-code-and-data-segments/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-code-and-data-segments/4"/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, N)
# else
# write-stream-data(curr-segment, line)
#
# . 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 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
# var curr-segment/EBX = null
31/xor 3/mod/direct 3/rm32/EBX . . . 3/r32/EBX . . # clear EBX
$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/EDX = word-slice->start
8b/copy 0/mod/indirect 1/rm32/ECX . . . 2/r32/EDX . . # copy *ECX to EDX
# . c/EAX = *start
31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX
8a/copy-byte 0/mod/indirect 2/rm32/EDX . . . 0/r32/AL . . # copy byte at *EDX to AL
# . if (EAX == '#') continue
3d/compare-EAX-and 0x23/imm32/hash
74/jump-if-equal $read-segments:loop/disp8
$read-segments:check-for-segment-header:
#? # dump word-slice {{{
#? # . write(2/stderr, "AA: ")
#? # . . push args
#? 68/push "AA: "/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
#? # . clear-stream(Stderr+4)
#? # . . push args
#? b8/copy-to-EAX Stderr/imm32
#? 05/add-to-EAX 4/imm32
#? 50/push-EAX
#? # . . call
#? e8/call clear-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
#? # . write-slice(Stderr, word-slice)
#? # . . push args
#? 52/push-EDX
#? 68/push Stderr/imm32
#? # . . call
#? e8/call write-slice/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
#? # . flush(Stderr)
#? # . . push args
#? 68/push Stderr/imm32
#? # . . call
#? e8/call flush/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
#? # . write(2/stderr, "$")
#? # . . 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, N)
# . . push args
68/push 0x1000/imm32/segment-size/4KB
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:
# write-stream-data(curr-segment, line)
# . . push args
51/push-ECX
53/push-EBX
# . . call
e8/call write-stream-data/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
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
write-segments: # out : (address buffered-file), table : (address stream row)
# pseudocode:
# name, stream = table[0]
# var i = 0
# while i < table.length
# name = table[i].name
# if (name == null) break
# write-buffered(out, "== ")
# write-buffered(out, name)
# write-buffered(out, "\n")
# stream = table[i].stream
# write-stream-data(out, stream)
# ++i
# flush(out)
#
# . prolog
55/push-EBP
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
# . save registers
$write-segments:end:
# . reclaim locals
# . restore registers
# . epilog
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
5d/pop-to-EBP
c3/return
## 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 <= writes to 0x0a003873
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) -> <void>
# . 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:
# . . vim:nowrap:textwidth=0