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|
# 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:
# $ bootstrap/bootstrap translate [01]*.subx subx-params.subx assort.subx -o assort
# $ cat x
# == code
# abc
# == code
# def
# $ cat x |bootstrap/bootstrap run 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
# . 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-assort-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-assort-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-assort-main:end/disp8
$subx-assort-main:interactive:
# - otherwise convert stdin
# var ed/eax: exit-descriptor
81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp
89/copy 3/mod/direct 0/rm32/eax . . . 4/r32/esp . . # copy esp to eax
# configure ed to really exit()
# . ed->target = 0
c7 0/subop/copy 0/mod/direct 0/rm32/eax . . . . . 0/imm32 # copy to *eax
# subx-assort(Stdin, Stdout, Stderr, ed)
# . . push args
50/push-eax/ed
68/push Stderr/imm32
68/push Stdout/imm32
68/push Stdin/imm32
# . . call
e8/call subx-assort/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-assort-main:end:
e8/call syscall_exit/disp32
# data structure:
# table: (addr stream {(handle array byte), (handle stream byte)}) (16 bytes/row)
# inefficient; uses sequential search for looking up segments by name
subx-assort: # in: (addr buffered-file), out: (addr buffered-file)
# pseudocode:
# var table: (addr stream {(handle array byte), (handle stream byte)} 10 rows)
# read-segments(in, table)
# write-segments(out, table)
#
# . prologue
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: (stream {string, (handle stream byte)} 160) # 10 rows * 16 bytes/row
81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 0xa0/imm32 # subtract from esp
68/push 0xa0/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
$subx-assort:read:
#? # print("read\n") {{{
#? # . . push args
#? 68/push "read\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# 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
$subx-assort:write:
#? # print("write\n") {{{
#? # . . push args
#? 68/push "write\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# 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
$subx-assort:end:
# . reclaim locals
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xac/imm32 # add to esp
# . restore registers
59/pop-to-ecx
# . epilogue
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-subx-assort:
# . prologue
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-input-stream)
# . . push args
68/push _test-input-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . clear-stream($_test-input-buffered-file->buffer)
# . . push args
68/push $_test-input-buffered-file->buffer/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . clear-stream($_test-output-buffered-file->buffer)
# . . push args
68/push $_test-output-buffered-file->buffer/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# initialize input (meta comments in parens)
# # comment 1
# # comment 2 indented
# == code 0x09000000 (new segment)
# # comment 3 inside a segment
# 1
# (empty line)
# 2 3 # comment 4 inline with other contents
# == data 0x0a000000 (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\n")
# . . push args
68/push "# comment 1\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, " # comment 2 indented\n")
# . . push args
68/push " # comment 2 indented\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "== code 0x09000000\n")
# . . push args
68/push "== code 0x09000000\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "# comment 3 inside a segment\n")
# . . push args
68/push "# comment 3 inside a segment\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "1\n")
# . . push args
68/push "1\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "\n") # empty line
# . . push args
68/push Newline/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "2 3 # comment 4 inline with other contents\n")
# . . push args
68/push "2 3 # comment 4 inline with other contents\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "== data 0x0a000000\n")
# . . push args
68/push "== data 0x0a000000\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "4 5/imm32\n")
# . . push args
68/push "4 5/imm32\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "== code\n")
# . . push args
68/push "== code\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "6 7\n")
# . . push args
68/push "6 7\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "8 9\n")
# . . push args
68/push "8 9\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "== code\n")
# . . push args
68/push "== code\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "10 11\n")
# . . push args
68/push "10 11\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# subx-assort(_test-input-buffered-file, _test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
68/push _test-input-buffered-file/imm32
# . . call
e8/call subx-assort/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . flush(_test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# check output
# == code 0x09000000
# 1
# 2 3 # comment 4 inline with other contents
# 6 7
# 8 9
# 10 11
# == data 0x0a000000
# 4 5/imm32
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . rewind-stream(_test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? # . . call
#? e8/call rewind-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # }}}
# . check-next-stream-line-equal(_test-output-stream, "== code 0x09000000", msg)
# . . push args
68/push "F - test-subx-assort/0"/imm32
68/push "== code 0x09000000"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "1", msg)
# . . push args
68/push "F - test-subx-assort/1"/imm32
68/push "1"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "2 3 # comment 4 inline with other contents", msg)
# . . push args
68/push "F - test-subx-assort/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-subx-assort/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-subx-assort/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-subx-assort/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 0x0a000000", msg)
# . . push args
68/push "F - test-subx-assort/6"/imm32
68/push "== data 0x0a000000"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "4 5/imm32", msg)
# . . push args
68/push "F - test-subx-assort/7"/imm32
68/push "4 5/imm32"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilogue
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
read-segments: # in: (addr buffered-file), table: (addr stream {(handle array byte), (handle stream byte)})
# pseudocode:
# var curr-segment: (addr stream byte) = 0
# var line: (stream byte 512)
# while true
# clear-stream(line)
# read-line-buffered(in, line)
# if (line->write == 0) break # end of file
# var word-slice = next-word-or-string(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-or-string(line)
# var segment-slot: (addr handle stream byte) = get-or-insert-slice(table, segment-name, row-size=16)
# if *segment-slot != 0
# curr-segment = lookup(*segment-slot)
# continue
# new-stream(Heap, Segment-size, 1, segment-slot)
# curr-segment = lookup(*segment-slot)
# rewind-stream(line)
# write-stream(curr-segment, line) # abort if curr-segment overflows
#
# word-slice and segment-name are both slices with disjoint lifetimes, so
# we'll use the same address for them.
#
# registers:
# line: ecx
# word-slice and segment-name: edx
# segment-name and curr-segment: ebx
# word-slice->start: esi
# temporary: eax
#
# . prologue
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# . save registers
50/push-eax
51/push-ecx
52/push-edx
53/push-ebx
56/push-esi
57/push-edi
# var line/ecx: (stream byte 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: slice
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 2/rm32/edx . . . 4/r32/esp . . # copy esp to edx
$read-segments:loop:
# clear-stream(line)
# . . push args
51/push-ecx
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# read-line-buffered(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-buffered/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-= $read-segments:break/disp32
#? # dump line {{{
#? # . write(2/stderr, "LL: ")
#? # . . push args
#? 68/push "LL: "/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, line)
#? # . . push args
#? 51/push-ecx
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . rewind-stream(line)
#? # . . push args
#? 51/push-ecx
#? # . . call
#? e8/call rewind-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# next-word-or-string(line, word-slice)
# . . push args
52/push-edx
51/push-ecx
# . . call
e8/call next-word-or-string/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
$read-segments:check1:
#? # print("check1\n") {{{
#? # . . push args
#? 68/push "check1\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# 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 != false) continue
3d/compare-eax-and 0/imm32/false
0f 85/jump-if-!= $read-segments:loop/disp32
$read-segments:check-for-comment:
#? # print("check for comment\n") {{{
#? # . . push args
#? 68/push "check for comment\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# if (slice-starts-with?(word-slice, "#")) continue
# . var start/esi: (addr byte) = word-slice->start
8b/copy 0/mod/indirect 2/rm32/edx . . . 6/r32/esi . . # copy *ecx to esi
# . var c/eax: byte = *start
31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax
8a/copy-byte 0/mod/indirect 6/rm32/esi . . . 0/r32/AL . . # copy byte at *esi to AL
# . if (c == '#') continue
3d/compare-eax-and 0x23/imm32/hash
0f 84/jump-if-= $read-segments:loop/disp32
$read-segments:check-for-segment-header:
#? # print("check for segment header\n") {{{
#? # . . push args
#? 68/push "check for segment header\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
#? # dump word-slice {{{
#? # . write(2/stderr, "AA: ")
#? # . . push args
#? 68/push "AA: "/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . clear-stream($Stderr->buffer)
#? # . . push args
#? 68/push $Stderr->buffer/imm32
#? # . . call
#? e8/call clear-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # . write-slice-buffered(Stderr, word-slice)
#? # . . push args
#? 52/push-edx
#? 68/push Stderr/imm32
#? # . . call
#? e8/call write-slice-buffered/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . flush(Stderr)
#? # . . push args
#? 68/push Stderr/imm32
#? # . . call
#? e8/call flush/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# if !slice-equal?(word-slice, "==") goto next check
# . 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 == false) goto next check
3d/compare-eax-and 0/imm32/false
0f 84/jump-if-= $read-segments:regular-line/disp32
# segment-name = next-word-or-string(line)
# . . push args
52/push-edx
51/push-ecx
# . . call
e8/call next-word-or-string/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # dump segment name {{{
#? # . write(2/stderr, "AA: ")
#? # . . push args
#? 68/push "AA: "/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . clear-stream($Stderr->buffer)
#? # . . push args
#? 68/push $Stderr->buffer/imm32
#? # . . call
#? e8/call clear-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # . write-slice-buffered(Stderr, word-slice)
#? # . . push args
#? 52/push-edx
#? 68/push Stderr/imm32
#? # . . call
#? e8/call write-slice-buffered/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . flush(Stderr)
#? # . . push args
#? 68/push Stderr/imm32
#? # . . call
#? e8/call flush/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# var segment-slot/edi: (addr handle stream byte) = get-or-insert-slice(table, segment-name, row-size=16, Heap)
# . eax = get-or-insert-slice(table, segment-name, row-size=16, Heap)
# . . push args
68/push Heap/imm32
68/push 0x10/imm32/row-size
52/push-edx
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
# . . call
e8/call get-or-insert-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp
# . edi = eax
89/copy 3/mod/direct 7/rm32/edi . . . 0/r32/eax . . # copy eax to edi
#? # print("slot: " segment-slot "\n") {{{
#? # . write("slot: ")
#? # . . push args
#? 68/push "slot: "/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-int32-hex-buffered(Stderr, segment-slot)
#? # . . push args
#? 57/push-edi
#? 68/push Stderr/imm32
#? # . . call
#? e8/call write-int32-hex-buffered/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("\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 (*segment-slot != 0) update curr-segment and continue
81 7/subop/compare 0/mod/indirect 7/rm32/edi . . . . . 0/imm32 # compare edi
0f 84/jump-if-= $read-segments:create-segment/disp32
# var curr-segment/ebx: (addr stream byte) = lookup(*segment-slot)
# . eax = lookup(*segment-slot)
# . . push args
ff 6/subop/push 1/mod/*+disp8 7/rm32/edi . . . . 4/disp8 . # push *(edi+4)
ff 6/subop/push 0/mod/indirect 7/rm32/edi . . . . . . # push *edi
# . . call
e8/call lookup/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . ebx = 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:create-segment:
# new-stream(Heap, Segment-size, 1, segment-slot)
# . . push args
57/push-edi
68/push 1/imm32
ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Segment-size/disp32 # push *Segment-size
68/push Heap/imm32
# . . call
e8/call new-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp
# var curr-segment/ebx: (addr stream byte) = lookup(*segment-slot)
# . eax = lookup(*segment-slot)
# . . push args
ff 6/subop/push 1/mod/*+disp8 7/rm32/edi . . . . 4/disp8 . # push *(edi+4)
ff 6/subop/push 0/mod/indirect 7/rm32/edi . . . . . . # push *edi
# . . call
e8/call lookup/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . ebx = eax
89/copy 3/mod/direct 3/rm32/ebx . . . 0/r32/eax . . # copy eax to ebx
# fall through
$read-segments:regular-line:
#? # print("regular line\n") {{{
#? # . . push args
#? 68/push "regular line\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
#? # dump line {{{
#? # . write(2/stderr, "regular line: ")
#? # . . push args
#? 68/push "regular line: "/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . rewind-stream(line)
#? # . . push args
#? 51/push-ecx
#? # . . call
#? e8/call rewind-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # . write-stream(2/stderr, line)
#? # . . push args
#? 51/push-ecx
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
#? # print("addr: " curr-segment->write "\n") {{{
#? # . write("addr: ")
#? # . . push args
#? 68/push "addr: "/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-int32-hex-buffered(Stderr, curr-segment)
#? # . . push args
#? 53/push-ebx
#? 68/push Stderr/imm32
#? # . . call
#? e8/call write-int32-hex-buffered/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("\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
#? # }}}
#? # print("write: " curr-segment->write "\n") {{{
#? # . write("write: ")
#? # . . push args
#? 68/push "write: "/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-int32-hex-buffered(Stderr, curr-segment->write)
#? # . . push args
#? ff 6/subop/push 0/mod/indirect 3/rm32/ebx . . . . . . # push *ebx
#? 68/push Stderr/imm32
#? # . . call
#? e8/call write-int32-hex-buffered/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("\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
#? # }}}
#? # print("size: " curr-segment->size "\n") {{{
#? # . write("size: ")
#? # . . push args
#? 68/push "size: "/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-int32-hex-buffered(Stderr, curr-segment->size)
#? # . . push args
#? ff 6/subop/push 1/mod/*+disp8 3/rm32/ebx . . . . 8/disp8 . # push *(ebx+8)
#? 68/push Stderr/imm32
#? # . . call
#? e8/call write-int32-hex-buffered/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("\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
#? # }}}
# rewind-stream(line)
# . . push args
51/push-ecx
# . . call
e8/call rewind-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # print("write stream\n") {{{
#? # . . push args
#? 68/push "write stream\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# write-stream(curr-segment, line)
# . . push args
51/push-ecx
53/push-ebx
# . . call
e8/call write-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# loop
#? # print("loop\n") {{{
#? # . . push args
#? 68/push "loop\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
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
5f/pop-to-edi
5e/pop-to-esi
5b/pop-to-ebx
5a/pop-to-edx
59/pop-to-ecx
58/pop-to-eax
# . epilogue
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
write-segments: # out: (addr buffered-file), table: (addr stream {(handle array byte), (handle stream byte)})
# pseudocode:
# var curr = table->data
# var max = &table->data[table->write]
# while curr < max
# var stream: (addr stream byte) = lookup(table[i].stream)
# write-stream-data(out, stream)
# curr += 16
# 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
52/push-edx
56/push-esi
# esi = table
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi
# var write/edx: int = table->write
8b/copy 0/mod/indirect 6/rm32/esi . . . 2/r32/edx . . # copy *esi to edx
# var curr/esi: (addr byte) = table->data
81 0/subop/add 3/mod/direct 6/rm32/esi . . . . . 0xc/imm32 # add to eax
# var max/edx: (addr byte) = curr + write
01/add 3/mod/direct 2/rm32/edx . . . 6/r32/esi . . # add esi to edx
$write-segments:loop:
# if (curr >= max) break
39/compare 3/mod/direct 6/rm32/esi . . . 2/r32/edx . . # compare esi with edx
73/jump-if-addr>= $write-segments:break/disp8
# var stream/eax: (addr stream byte) = lookup(table[i].stream)
# . . push args
ff 6/subop/push 1/mod/*+disp8 6/rm32/esi . . . . 0xc/disp8 . # push *(esi+12)
ff 6/subop/push 1/mod/*+disp8 6/rm32/esi . . . . 8/disp8 . # push *(esi+8)
# . . call
e8/call lookup/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# write-stream-data(out, stream)
# . . push args
50/push-eax
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call write-stream-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
$write-segments:continue:
# curr += 16
81 0/subop/add 3/mod/direct 6/rm32/esi . . . . . 0x10/imm32 # add to esi
eb/jump $write-segments:loop/disp8
$write-segments:break:
# flush(out)
# . . push args
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
$write-segments:end:
# . restore registers
5e/pop-to-esi
5a/pop-to-edx
58/pop-to-eax
# . epilogue
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
# . . vim:nowrap:textwidth=0
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