# Translate literal strings within double quotes.
# Replace them with references to new variables in the data segment.
#
# To run:
# $ ./subx translate 0*.subx apps/subx-common.subx apps/dquotes.subx -o apps/dquotes
# $ cat x
# == code
# ab "cd ef"/imm32
# $ cat x |./subx run apps/dquotes
# == code
# ab __string1/imm32
# == data
# __string1:
# 5/imm32
# 0x63/c 0x64/d 0x20/ 0x65/e 0x66/f
== code
# instruction effective address register displacement immediate
# . op subop mod rm32 base index scale r32
# . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes
Entry:
# 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
# run tests if necessary, convert stdin if not
# . 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
# conceptual hierarchy within a line:
# line = words separated by ' ', maybe followed by comment starting with '#'
# word = datum until '/', then 0 or more metadata separated by '/'
convert: # in : (address buffered-file), out : (address buffered-file) -> <void>
# pseudocode:
# var line = new-stream(512, 1)
# var new-data-segment = new-stream(Heap, Segment-size, 1)
# write(new-data-segment, "== data\n")
# while true
# clear-stream(line)
# read-line-buffered(in, line)
# if (line->write == 0) break # end of file
# while true
# var word-slice = next-word-or-string(line)
# if slice-empty?(word-slice) # end of line
# break
# if slice-starts-with?(word-slice, "#") # comment
# continue
# if slice-starts-with?(word-slice, '"') # string literal <== what we're here for
# process-string-literal(word-slice, out, new-data-segment)
# else
# write-slice-buffered(out, word-slice)
# write(out, " ")
# write(out, "\n\n")
# write-stream-data(out, new-data-segment)
# flush(out)
#
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# . save registers
50/push-eax
51/push-ecx
52/push-edx
53/push-ebx
56/push-esi
57/push-edi
# 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/start
89/copy 3/mod/direct 2/rm32/edx . . . 4/r32/esp . . # copy esp to edx
# new-data-segment/edi = new-stream(Heap, Segment-size, 1)
# . eax = new-stream(Heap, Segment-size, 1)
# . . push args
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 . . . . . 0xc/imm32 # add to esp
# . edi = eax
89/copy 3/mod/direct 7/rm32/edi . . . 0/r32/eax . . # copy eax to edi
# write(new-data-segment, "== data\n")
# . . push args
68/push "== data\n"/imm32
57/push-edi
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
$convert:line-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
$convert: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 $convert:break/disp32
$convert:word-loop:
# 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
$convert:check1:
# if (slice-empty?(word-slice)) break
# . 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) break
3d/compare-eax-and 0/imm32
0f 85/jump-if-not-equal $convert:next-line/disp32
$convert:check-for-comment:
# if (slice-starts-with?(word-slice, "#")) continue
# . start/esi = word-slice->start
8b/copy 0/mod/indirect 2/rm32/edx . . . 6/r32/esi . . # copy *edx to esi
# . c/eax = *start
31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax
8a/copy-byte 0/mod/indirect 6/rm32/esi . . . 0/r32/AL . . # copy byte at *esi to AL
# . if (eax == '#') continue
3d/compare-eax-and 0x23/imm32/hash
74/jump-if-equal $convert:word-loop/disp8
$convert:check-for-string-literal:
# if (slice-starts-with?(word-slice, '"')) continue
3d/compare-eax-and 0x22/imm32/dquote
75/jump-if-not-equal $convert:regular-word/disp8
$convert:string-literal:
# process-string-literal(word-slice, out, new-data-segment)
# . . push args
57/push-edi
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
52/push-edx
# . . call
e8/call process-string-literal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# continue
eb/jump $convert:next-word/disp8
$convert:regular-word:
# write-slice-buffered(out, word-slice)
# . . push args
52/push-edx
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
# . . call
e8/call write-slice-buffered/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# fall through
$convert:next-word:
# write-buffered(out, " ")
# . . push args
68/push " "/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
# . . call
e8/call write-buffered/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# loop
eb/jump $convert:word-loop/disp8
$convert:next-line:
# write-buffered(out, "\n")
# . . push args
68/push Newline/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
# . . call
e8/call write-buffered/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# loop
e9/jump $convert:line-loop/disp32
$convert:break:
# write-stream-data(out, new-data-segment)
# . . push args
57/push-edi
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
# . . call
e8/call write-stream-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# 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
$convert: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
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
# Write out 'string-literal' in a new format to 'out-segment', assign it a new
# label, and write the new label out to 'out'.
process-string-literal: # string-literal : (address slice), out : (address buffered-file), out-segment : (address stream)
# pseudocode:
# print(out-segment, "_string#{Next-string-literal}:\n")
# emit-string-literal-data(out-segment, string-literal)
# print(out, "_string#{Next-string-literal}")
# emit-metadata(out, string-literal)
# ++ *Next-string-literal
#
# . 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 int32-stream/ecx = stream(10) # number of decimal digits a 32-bit number can have
81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 0xa/imm32 # subtract from esp
68/push 0xa/imm32/decimal-digits-in-32bit-number
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
# print(out-segment, "_string#{Next-string-literal}:\n")
# . write(out-segment, "_string")
# . . push args
68/push "_string"/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16)
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . print-int32-decimal(out-segment, *Next-string-literal)
# . . push args
ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Next-string-literal/disp32 # push *Next-string-literal
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16)
# . . call
e8/call print-int32-decimal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(out-segment, ":\n")
# . . push args
68/push ":\n"/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16)
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# emit-string-literal-data(out-segment, string-literal)
# . . push args
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16)
# . . call
e8/call emit-string-literal-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# write(out-segment, "\n")
# . . push args
68/push Newline/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16)
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# print(out, "_string#{Next-string-literal}")
# . write-buffered(out, "_string")
# . . push args
68/push "_string"/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
# . . call
e8/call write-buffered/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . print-int32-decimal(int32-stream, *Next-string-literal)
# . . push args
ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Next-string-literal/disp32 # push *Next-string-literal
51/push-ecx
# . . call
e8/call print-int32-decimal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write-stream-data(out, int32-stream)
# . . push args
51/push-ecx
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
# . . call
e8/call write-stream-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# emit-metadata(out, string-literal)
# . . push args
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12)
# . . call
e8/call emit-metadata/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# ++ *Next-string-literal
ff 0/subop/increment 0/mod/indirect 5/rm32/.disp32 . . . Next-string-literal/disp32 # increment *Num-test-failures
$process-string-literal:end:
# . reclaim locals
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x16/imm32 # add to esp
# . restore registers
59/pop-to-ecx
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-convert-is-idempotent-by-default:
# . 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 0x1 (new segment)
# # comment 3 inside a segment
# 1
# (empty line)
# 2 3 # comment 4 inline with other contents
# == data 0x2 (new segment)
# 4 5/imm32
# . write(_test-input-stream, "# comment 1\n")
# . . push args
68/push "# comment 1\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, " # comment 2 indented\n")
# . . push args
68/push " # comment 2 indented\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "== code 0x1\n")
# . . push args
68/push "== code 0x1\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "# comment 3 inside a segment\n")
# . . push args
68/push "# comment 3 inside a segment\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "1\n")
# . . push args
68/push "1\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "\n") # empty line
# . . push args
68/push "\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "2 3 # comment 4 inline with other contents\n")
# . . push args
68/push "2 3 # comment 4 inline with other contents\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "== data 0x2\n")
# . . push args
68/push "== data 0x2\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "4 5/imm32\n")
# . . push args
68/push "4 5/imm32\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# 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
# . flush(_test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# check output
# (comment dropped for now)
# (comment dropped for now)
# == code 0x1
# (comment dropped for now)
# 1
# (comment dropped for now)
# 2 3
# == data 0x2
# 4 5/imm32
# We don't care right now what exactly happens to comments. Trailing spaces are also minor details.
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# . check-next-stream-line-equal(_test-output-stream, "", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/0"/imm32
68/push ""/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/1"/imm32
68/push ""/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "== code 0x1 ", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/2"/imm32
68/push "== code 0x1 "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/3"/imm32
68/push ""/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "1 ", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/4"/imm32
68/push "1 "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/5"/imm32
68/push ""/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "2 3 ", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/6"/imm32
68/push "2 3 "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "== data 0x2 ", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/7"/imm32
68/push "== data 0x2 "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "4 5/imm32 ", msg)
# . . push args
68/push "F - test-convert-is-idempotent-by-default/8"/imm32
68/push "4 5/imm32 "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-convert-processes-string-literals:
# . 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)
# == code (new segment)
# 1 "a"/x
# 2 "bc"/y
68/push "== code 0x1\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "1 \"a\"/x\n")
# . . push args
68/push "1 \"a\"/x\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(_test-input-stream, "2 \"bc\"/y\n")
# . . push args
68/push "2 \"bc\"/y\n"/imm32
68/push _test-input-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# 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
# . flush(_test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# check output
# == code 0x1
# 1 _string1/x
# 2 _string2/y
# == data
# _string1:
# 1/imm32 61/a
# _string2:
# 2/imm32 62/b 63/c
# We don't care right now what exactly happens to comments. Trailing spaces are also minor details.
#
# Open question: how to make this check more robust.
# We don't actually care what the auto-generated string variables are
# called. We just want to make sure instructions using string literals
# switch to a string variable with the right value.
# (Modifying string literals completely off the radar for now.)
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . rewind-stream(_test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? # . . call
#? e8/call rewind-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # }}}
# . check-next-stream-line-equal(_test-output-stream, "== code 0x1 ", msg)
# . . push args
68/push "F - test-convert-processes-string-literals/0"/imm32
68/push "== code 0x1 "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "1 _string1/x ", msg)
# . . push args
68/push "F - test-convert-processes-string-literals/1"/imm32
68/push "1 _string1/x "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "2 _string2/y ", msg)
# . . push args
68/push "F - test-convert-processes-string-literals/2"/imm32
68/push "2 _string2/y "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "== data", msg)
# . . push args
68/push "F - test-convert-processes-string-literals/3"/imm32
68/push "== data"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "_string1: ", msg)
# . . push args
68/push "F - test-convert-processes-string-literals/4"/imm32
68/push "_string1:"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "1/imm32 61/a ", msg)
# . . push args
68/push "F - test-convert-processes-string-literals/5"/imm32
68/push "0x00000001/imm32 61/a "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "_string2: ", msg)
# . . push args
68/push "F - test-convert-processes-string-literals/6"/imm32
68/push "_string2:"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . check-next-stream-line-equal(_test-output-stream, "2/imm32 62/b 63/c ", msg)
# . . push args
68/push "F - test-convert-processes-string-literals/7"/imm32
68/push "0x00000002/imm32 62/b 63/c "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-next-stream-line-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
# generate the data segment contents byte by byte for a given slice
emit-string-literal-data: # out : (address stream), word : (address slice)
# pseudocode
# len = string-length-at-start-of-slice(word->start, word->end)
# print(out, "#{len}/imm32 ")
# curr = word->start
# ++curr # skip '"'
# while true
# if (curr >= word->end) break
# c = *curr
# if (c == '"') break
# if (c == '\') {
# ++curr
# c = *curr
# if (c == 'n')
# c = newline
# }
# append-byte-hex(out, c)
# if c is alphanumeric:
# write(out, "/")
# append-byte(out, c)
# write(out, " ")
# ++curr
#
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# . save registers
50/push-eax
51/push-ecx
52/push-edx
56/push-esi
# esi = word
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi
# curr/edx = word->start
8b/copy 0/mod/indirect 6/rm32/esi . . . 2/r32/edx . . # copy *esi to edx
# max/esi = word->end
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 6/r32/esi 4/disp8 . # copy *(esi+4) to esi
$emit-string-literal-data:emit-length:
# len/eax = string-length-at-start-of-slice(word->start, word->end)
# . . push args
56/push-esi
52/push-edx
# . . call
e8/call string-length-at-start-of-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# print(out, "#{len}/imm32 ")
# . print-int32(out, len)
# . . push args
50/push-eax
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call print-int32/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . write(out, "/imm32 ")
# . . push args
68/push "/imm32 "/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
$emit-string-literal-data:loop-init:
# ++curr # skip initial '"'
42/increment-edx
# c/ecx = 0
31/xor 3/mod/direct 1/rm32/ecx . . . 1/r32/ecx . . # clear ecx
$emit-string-literal-data:loop:
# if (curr >= max) break
39/compare 3/mod/direct 2/rm32/edx . . . 6/r32/esi . . # compare edx with esi
0f 83/jump-if-greater-or-equal-unsigned $emit-string-literal-data:end/disp32
# CL = *curr
8a/copy-byte 0/mod/indirect 2/rm32/edx . . . 1/r32/CL . . # copy byte at *edx to CL
# if (c == '"') break
81 7/subop/compare 3/mod/direct 1/rm32/ecx . . . . . 0x22/imm32/dquote # compare ecx
74/jump-if-equal $emit-string-literal-data:end/disp8
# if (c != '\') goto emit
81 7/subop/compare 3/mod/direct 1/rm32/ecx . . . . . 0x5c/imm32/backslash # compare ecx
75/jump-if-not-equal $emit-string-literal-data:emit/disp8
# ++curr
42/increment-edx
# if (curr >= max) break
39/compare 3/mod/direct 2/rm32/edx . . . 6/r32/esi . . # compare edx with esi
73/jump-if-greater-or-equal-unsigned $emit-string-literal-data:end/disp8
# c = *curr
8a/copy-byte 0/mod/indirect 2/rm32/edx . . . 1/r32/CL . . # copy byte at *edx to CL
# if (c == 'n') c = newline
81 7/subop/compare 3/mod/direct 1/rm32/ecx . . . . . 0x6e/imm32/n # compare ecx
75/jump-if-not-equal $emit-string-literal-data:emit/disp8
b9/copy-to-ecx 0x0a/imm32/newline
$emit-string-literal-data:emit:
# append-byte-hex(out, CL)
# . . push args
51/push-ecx
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call append-byte-hex/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# if (is-alphanumeric?(*curr)) print(out, "/#{*curr}")
# . eax = is-alphanumeric?(CL)
# . . push args
51/push-ecx
# . . call
e8/call is-alphanumeric?/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . if (eax == 0) goto char-done
3d/compare-eax-and 0/imm32
74/jump-if-equal $emit-string-literal-data:char-done/disp8
# . write(out, "/")
# . . push args
68/push Slash/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . append-byte(out, *curr)
# . . push args
51/push-ecx
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call append-byte/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
$emit-string-literal-data:char-done:
# write(out, " ")
# . . push args
68/push Space/imm32
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# ++curr
42/increment-edx
e9/jump $emit-string-literal-data:loop/disp32
$emit-string-literal-data:end:
# . restore registers
5e/pop-to-esi
5a/pop-to-edx
59/pop-to-ecx
58/pop-to-eax
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
is-alphanumeric?: # c : int -> eax : boolean
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# eax = c
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax
# if (eax < '0') return false
3d/compare-eax-with 0x30/imm32/0
7c/jump-if-lesser $is-alphanumeric?:false/disp8
# if (eax <= '9') return true
3d/compare-eax-with 0x39/imm32/9
7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8
# if (eax < 'A') return false
3d/compare-eax-with 0x41/imm32/A
7c/jump-if-lesser $is-alphanumeric?:false/disp8
# if (eax <= 'Z') return true
3d/compare-eax-with 0x5a/imm32/Z
7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8
# if (eax < 'a') return false
3d/compare-eax-with 0x61/imm32/a
7c/jump-if-lesser $is-alphanumeric?:false/disp8
# if (eax <= 'z') return true
3d/compare-eax-with 0x7a/imm32/z
7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8
# return false
$is-alphanumeric?:false:
b8/copy-to-eax 0/imm32/false
eb/jump $is-alphanumeric?:end/disp8
$is-alphanumeric?:true:
b8/copy-to-eax 1/imm32/true
$is-alphanumeric?:end:
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-string-literal-data:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# var slice/ecx = '"abc"/d'
68/push _test-slice-abc-limit/imm32
68/push _test-slice-abc/imm32
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-string-literal-data(_test-output-stream, slice)
# . . push args
51/push-ecx
68/push _test-output-stream/imm32
# . . call
e8/call emit-string-literal-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# . check-stream-equal(_test-output-stream, "3/imm32 61/a 62/b 63/c ", msg)
# . . push args
68/push "F - test-emit-string-literal-data"/imm32
68/push "0x00000003/imm32 61/a 62/b 63/c "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-string-literal-data-empty:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# var slice/ecx = '""'
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-string-literal-data(_test-output-stream, slice)
# . . push args
51/push-ecx
68/push _test-output-stream/imm32
# . . call
e8/call emit-string-literal-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# . check-stream-equal(_test-output-stream, "0/imm32 ", msg)
# . . push args
68/push "F - test-emit-string-literal-data-empty"/imm32
68/push "0x00000000/imm32 "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
# just to keep things simple
test-emit-string-literal-data-no-metadata-for-non-alphanumerics:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# var slice/ecx = '"a b"'
68/push _test-slice-a-space-b-limit/imm32
68/push _test-slice-a-space-b/imm32
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-string-literal-data(_test-output-stream, slice)
# . . push args
51/push-ecx
68/push _test-output-stream/imm32
# . . call
e8/call emit-string-literal-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# . check-stream-equal(_test-output-stream, "3/imm32 61/a 20 62/b ", msg) # ideally we'd like to say '20/space' but that requires managing names for codepoints
# . . push args
68/push "F - test-emit-string-literal-data-no-metadata-for-non-alphanumerics"/imm32
68/push "0x00000003/imm32 61/a 20 62/b "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-string-literal-data-handles-escape-sequences:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# var slice/ecx = '"a\"b"'
68/push _test-slice-a-dquote-b-limit/imm32
68/push _test-slice-a-dquote-b/imm32
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-string-literal-data(_test-output-stream, slice)
# . . push args
51/push-ecx
68/push _test-output-stream/imm32
# . . call
e8/call emit-string-literal-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# . check-stream-equal(_test-output-stream, "3/imm32 61/a 22 62/b ", msg)
# . . push args
68/push "F - test-emit-string-literal-data-handles-escape-sequences"/imm32
68/push "0x00000003/imm32 61/a 22 62/b "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-string-literal-data-handles-newline-escape:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# var slice/ecx = '"a\nb"'
68/push _test-slice-a-newline-b-limit/imm32
68/push _test-slice-a-newline-b/imm32
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-string-literal-data(_test-output-stream, slice)
# . . push args
51/push-ecx
68/push _test-output-stream/imm32
# . . call
e8/call emit-string-literal-data/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# . check-stream-equal(_test-output-stream, "3/imm32 61/a 0a 62/b ", msg)
# . . push args
68/push "F - test-emit-string-literal-data-handles-newline-escape"/imm32
68/push "0x00000003/imm32 61/a 0a 62/b "/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
# emit everything from a word except the initial datum
emit-metadata: # out : (address buffered-file), word : (address slice)
# pseudocode
# var slice = {0, word->end}
# curr = word->start
# if *curr == '"'
# curr = skip-string-in-slice(curr, word->end)
# else
# while true
# if curr == word->end
# return
# if *curr == '/'
# break
# ++curr
# slice->start = curr
# write-slice-buffered(out, slice)
#
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# . save registers
50/push-eax
51/push-ecx
52/push-edx
53/push-ebx
56/push-esi
# esi = word
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi
# curr/ecx = word->start
8b/copy 0/mod/indirect 6/rm32/esi . . . 1/r32/ecx . . # copy *esi to ecx
# end/edx = word->end
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 2/r32/edx 4/disp8 . # copy *(esi+4) to edx
# var slice/ebx = {0, end}
52/push-edx
68/push 0/imm32
89/copy 3/mod/direct 3/rm32/ebx . . . 4/r32/esp . . # copy esp to ebx
# eax = 0
b8/copy-to-eax 0/imm32
$emit-metadata:check-for-string-literal:
# - if (*curr == '"') curr = skip-string-in-slice(curr, end)
8a/copy-byte 0/mod/indirect 1/rm32/ecx . . . 0/r32/AL . . # copy byte at *ecx to AL
3d/compare-eax-and 0x22/imm32/dquote
75/jump-if-not-equal $emit-metadata:skip-datum-loop/disp8
$emit-metadata:skip-string-literal:
# . eax = skip-string-in-slice(curr, end)
# . . push args
52/push-edx
51/push-ecx
# . . call
e8/call skip-string-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# . curr = eax
89/copy 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # copy eax to ecx
eb/jump $emit-metadata:emit/disp8
$emit-metadata:skip-datum-loop:
# - otherwise scan for '/'
# if (curr == end) return
39/compare 3/mod/direct 1/rm32/ecx . . . 2/r32/edx . . # compare ecx and edx
74/jump-if-equal $emit-metadata:end/disp8
# if (*curr == '/') break
8a/copy-byte 0/mod/indirect 1/rm32/ecx . . . 0/r32/AL . . # copy byte at *ecx to AL
3d/compare-eax-and 0x2f/imm32/slash
74/jump-if-equal $emit-metadata:emit/disp8
# ++curr
41/increment-ecx
eb/jump $emit-metadata:skip-datum-loop/disp8
$emit-metadata:emit:
# slice->start = ecx
89/copy 0/mod/indirect 3/rm32/ebx . . . 1/r32/ecx . . # copy ecx to *ebx
# write-slice-buffered(out, slice)
# . . push args
53/push-ebx
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call write-slice-buffered/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . 8/imm32 . # add to esp
$emit-metadata:end:
# . reclaim locals
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . 8/imm32 . # add to esp
# . restore registers
5e/pop-to-esi
5b/pop-to-ebx
5a/pop-to-edx
59/pop-to-ecx
58/pop-to-eax
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-metadata:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . clear-stream(_test-output-buffered-file+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
# (eax..ecx) = "abc/def"
b8/copy-to-eax "abc/def"/imm32
8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx
05/add-to-eax 4/imm32
# var slice/ecx = {eax, ecx}
51/push-ecx
50/push-eax
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-metadata(_test-output-buffered-file, slice)
# . . push args
51/push-ecx
68/push _test-output-buffered-file/imm32
# . . call
e8/call emit-metadata/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# flush(_test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# check-stream-equal(_test-output-stream, "/def", msg) # important that there's no leading space
# . . push args
68/push "F - test-emit-metadata"/imm32
68/push "/def"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-metadata-none:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . clear-stream(_test-output-buffered-file+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
# (eax..ecx) = "abc"
b8/copy-to-eax "abc"/imm32
8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx
05/add-to-eax 4/imm32
# var slice/ecx = {eax, ecx}
51/push-ecx
50/push-eax
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-metadata(_test-output-buffered-file, slice)
# . . push args
51/push-ecx
68/push _test-output-buffered-file/imm32
# . . call
e8/call emit-metadata/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# flush(_test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# check-stream-equal(_test-output-stream, "", msg)
# . . push args
68/push "F - test-emit-metadata-none"/imm32
68/push ""/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-metadata-multiple:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . clear-stream(_test-output-buffered-file+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
# (eax..ecx) = "abc/def/ghi"
b8/copy-to-eax "abc/def/ghi"/imm32
8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx
05/add-to-eax 4/imm32
# var slice/ecx = {eax, ecx}
51/push-ecx
50/push-eax
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-metadata(_test-output-buffered-file, slice)
# . . push args
51/push-ecx
68/push _test-output-buffered-file/imm32
# . . call
e8/call emit-metadata/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# flush(_test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# check-stream-equal(_test-output-stream, "/def/ghi", msg) # important that there's no leading space
# . . push args
68/push "F - test-emit-metadata-multiple"/imm32
68/push "/def/ghi"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-metadata-when-no-datum:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . clear-stream(_test-output-buffered-file+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
# var slice/ecx = "/abc"
b8/copy-to-eax "/abc"/imm32
# . push end/ecx
8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx
51/push-ecx
# . push curr/eax
05/add-to-eax 4/imm32
50/push-eax
# . save stack pointer
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-metadata(_test-output-buffered-file, slice)
# . . push args
51/push-ecx
68/push _test-output-buffered-file/imm32
# . . call
e8/call emit-metadata/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# flush(_test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# check-stream-equal(_test-output-stream, "/abc", msg) # nothing skipped
# . . push args
68/push "F - test-emit-metadata-when-no-datum"/imm32
68/push "/abc"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-emit-metadata-in-string-literal:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup
# . clear-stream(_test-output-stream)
# . . push args
68/push _test-output-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# . clear-stream(_test-output-buffered-file+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
# var slice/ecx = "\"abc/def\"/ghi"
68/push _test-slice-literal-string-with-limit/imm32
68/push _test-slice-literal-string/imm32/start
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# emit-metadata(_test-output-buffered-file, slice)
# . . push args
51/push-ecx
68/push _test-output-buffered-file/imm32
# . . call
e8/call emit-metadata/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# flush(_test-output-buffered-file)
# . . push args
68/push _test-output-buffered-file/imm32
# . . call
e8/call flush/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
#? # dump output {{{
#? # . write(2/stderr, "result: ^")
#? # . . push args
#? 68/push "result: ^"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write-stream(2/stderr, _test-output-stream)
#? # . . push args
#? 68/push _test-output-stream/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write-stream/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # . write(2/stderr, "$\n")
#? # . . push args
#? 68/push "$\n"/imm32
#? 68/push 2/imm32/stderr
#? # . . call
#? e8/call write/disp32
#? # . . discard args
#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
#? # }}}
# check-stream-equal(_test-output-stream, "/ghi", msg) # important that there's no leading space
# . . push args
68/push "F - test-emit-metadata-in-string-literal"/imm32
68/push "/ghi"/imm32
68/push _test-output-stream/imm32
# . . call
e8/call check-stream-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
# (re)compute the bounds of the next word or string literal in the line
# return empty string on reaching end of file
next-word-or-string: # line : (address stream byte), out : (address slice)
# . 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
57/push-edi
# esi = line
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi
# edi = out
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 0xc/disp8 . # copy *(ebp+12) to edi
# skip-chars-matching(line, ' ')
# . . push args
68/push 0x20/imm32/space
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call skip-chars-matching/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
$next-word-or-string:check0:
# if (line->read >= line->write) clear out and return
# . eax = line->read
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 0/r32/eax 4/disp8 . # copy *(esi+4) to eax
# . if (eax < line->write) goto next check
3b/compare 0/mod/indirect 6/rm32/esi . . . 0/r32/eax . . # compare eax with *esi
7c/jump-if-lesser $next-word-or-string:check-for-comment/disp8
# . return out = {0, 0}
c7 0/subop/copy 0/mod/direct 7/rm32/edi . . . . . 0/imm32 # copy to *edi
c7 0/subop/copy 1/mod/*+disp8 7/rm32/edi . . . . 4/disp8 0/imm32 # copy to *(edi+4)
eb/jump $next-word-or-string:end/disp8
$next-word-or-string:check-for-comment:
# out->start = &line->data[line->read]
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/eax 0xc/disp8 . # copy esi+ecx+12 to eax
89/copy 0/mod/indirect 7/rm32/edi . . . 0/r32/eax . . # copy eax to *edi
# if (line->data[line->read] != '#') goto next check
# . eax = line->data[line->read]
31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax
8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/AL 0xc/disp8 . # copy byte at *(esi+ecx+12) to AL
# . compare
3d/compare-eax-and 0x23/imm32/pound
75/jump-if-not-equal $next-word-or-string:check-for-string-literal/disp8
$next-word-or-string:comment:
# out->end = &line->data[line->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
89/copy 1/mod/*+disp8 7/rm32/edi . . . 0/r32/eax 4/disp8 . # copy eax to *(edi+4)
# line->read = line->write # skip rest of line
8b/copy 0/mod/indirect 6/rm32/esi . . . 0/r32/eax . . # copy *esi to eax
89/copy 1/mod/*+disp8 6/rm32/esi . . . 0/r32/eax 4/disp8 . # copy eax to *(esi+4)
# return
eb/jump $next-word-or-string:end/disp8
$next-word-or-string:check-for-string-literal:
# if (line->data[line->read] != '"') goto next check
# . eax = line->data[line->read]
31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax
8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/AL 0xc/disp8 . # copy byte at *(esi+ecx+12) to AL
# . compare
3d/compare-eax-and 0x22/imm32/dquote
75/jump-if-not-equal $next-word-or-string:regular-word/disp8
$next-word-or-string:string-literal:
# skip-string(line)
# . . push args
56/push-esi
# . . call
e8/call skip-string/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# fall through
$next-word-or-string:regular-word:
# skip-chars-not-matching-whitespace(line) # including trailing newline
# . . push args
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call skip-chars-not-matching-whitespace/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# out->end = &line->data[line->read]
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx . 0/r32/eax 0xc/disp8 . # copy esi+ecx+12 to eax
89/copy 1/mod/*+disp8 7/rm32/edi . . . 0/r32/eax 4/disp8 . # copy eax to *(edi+4)
$next-word-or-string:end:
# . restore registers
5f/pop-to-edi
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-next-word-or-string:
# . 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
# var slice/ecx = {0, 0}
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# write(_test-input-stream, " ab")
# . . push args
68/push " ab"/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
# next-word-or-string(_test-input-stream, slice)
# . . push args
51/push-ecx
68/push _test-input-stream/imm32
# . . 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
# check-ints-equal(_test-input-stream->read, 4, msg)
# . . push args
68/push "F - test-next-word-or-string/updates-stream-read-correctly"/imm32
68/push 4/imm32
b8/copy-to-eax _test-input-stream/imm32
ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+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
# check-ints-equal(slice->start - _test-input-stream->data, 2, msg)
# . check-ints-equal(slice->start - _test-input-stream, 14, msg)
# . . push args
68/push "F - test-next-word-or-string: start"/imm32
68/push 0xe/imm32
# . . push slice->start - _test-input-stream
8b/copy 0/mod/indirect 1/rm32/ecx . . . 0/r32/eax . . # copy *ecx to eax
81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-input-stream/imm32 # subtract from eax
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
# check-ints-equal(slice->end - _test-input-stream->data, 4, msg)
# . check-ints-equal(slice->end - _test-input-stream, 16, msg)
# . . push args
68/push "F - test-next-word-or-string: end"/imm32
68/push 0x10/imm32
# . . push slice->end - _test-input-stream
8b/copy 1/mod/*+disp8 1/rm32/ecx . . . 0/r32/eax 4/disp8 . # copy *(ecx+4) to eax
81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-input-stream/imm32 # subtract from eax
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
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-next-word-or-string-returns-whole-comment:
# . 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
# var slice/ecx = {0, 0}
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# write(_test-input-stream, " # a")
# . . push args
68/push " # a"/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
# next-word-or-string(_test-input-stream, slice)
# . . push args
51/push-ecx
68/push _test-input-stream/imm32
# . . 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
# check-ints-equal(_test-input-stream->read, 5, msg)
# . . push args
68/push "F - test-next-word-or-string-returns-whole-comment/updates-stream-read-correctly"/imm32
68/push 5/imm32
b8/copy-to-eax _test-input-stream/imm32
ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+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
# check-ints-equal(slice->start - _test-input-stream->data, 2, msg)
# . check-ints-equal(slice->start - _test-input-stream, 14, msg)
# . . push args
68/push "F - test-next-word-or-string-returns-whole-comment: start"/imm32
68/push 0xe/imm32
# . . push slice->start - _test-input-stream
8b/copy 0/mod/indirect 1/rm32/ecx . . . 0/r32/eax . . # copy *ecx to eax
81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-input-stream/imm32 # subtract from eax
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
# check-ints-equal(slice->end - _test-input-stream->data, 5, msg)
# . check-ints-equal(slice->end - _test-input-stream, 17, msg)
# . . push args
68/push "F - test-next-word-or-string-returns-whole-comment: end"/imm32
68/push 0x11/imm32
# . . push slice->end - _test-input-stream
8b/copy 1/mod/*+disp8 1/rm32/ecx . . . 0/r32/eax 4/disp8 . # copy *(ecx+4) to eax
81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-input-stream/imm32 # subtract from eax
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
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-next-word-or-string-returns-empty-slice-on-eof:
# . 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
# var slice/ecx = {0, 0}
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# write nothing to _test-input-stream
# next-word-or-string(_test-input-stream, slice)
# . . push args
51/push-ecx
68/push _test-input-stream/imm32
# . . 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
# check-ints-equal(slice->end - slice->start, 0, msg)
# . . push args
68/push "F - test-next-word-or-string-returns-empty-string-on-eof"/imm32
68/push 0/imm32
# . . push slice->end - slice->start
8b/copy 1/mod/*+disp8 1/rm32/ecx . . . 0/r32/eax 4/disp8 . # copy *(ecx+4) to eax
2b/subtract 0/mod/indirect 1/rm32/ecx . . . 0/r32/eax . . # subtract *ecx from eax
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
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-next-word-or-string-returns-string-literal:
# . 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
# var slice/ecx = {0, 0}
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# write(_test-input-stream, " \"a b\"/imm32 ")
# . . push args
68/push " \"a b\"/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
# next-word-or-string(_test-input-stream, slice)
# . . push args
51/push-ecx
68/push _test-input-stream/imm32
# . . 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
# check-ints-equal(slice->start - _test-input-stream->data, 1, msg)
# . check-ints-equal(slice->start - _test-input-stream, 13, msg)
# . . push args
68/push "F - test-next-word-or-string-returns-string-literal: start"/imm32
68/push 0xd/imm32
# . . push slice->start - _test-input-stream
8b/copy 0/mod/indirect 1/rm32/ecx . . . 0/r32/eax . . # copy *ecx to eax
81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-input-stream/imm32 # subtract from eax
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
# check-ints-equal(slice->end - _test-input-stream->data, 12, msg)
# . check-ints-equal(slice->end - _test-input-stream, 24, msg)
# . . push args
68/push "F - test-next-word-or-string-returns-string-literal: end"/imm32
68/push 0x18/imm32
# . . push slice->end - _test-input-stream
8b/copy 1/mod/*+disp8 1/rm32/ecx . . . 0/r32/eax 4/disp8 . # copy *(ecx+4) to eax
81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-input-stream/imm32 # subtract from eax
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
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-next-word-or-string-returns-string-with-escapes:
# . 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
# var slice/ecx = {0, 0}
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
# write(_test-input-stream, " \"a\\\"b\"/x")
# . . push args
68/push " \"a\\\"b\"/x"/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
# next-word-or-string(_test-input-stream, slice)
# . . push args
51/push-ecx
68/push _test-input-stream/imm32
# . . 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
# check-ints-equal(slice->start - _test-input-stream->data, 1, msg)
# . check-ints-equal(slice->start - _test-input-stream, 13, msg)
# . . push args
68/push "F - test-next-word-or-string-returns-string-with-escapes: start"/imm32
68/push 0xd/imm32
# . . push slice->start - _test-input-stream
8b/copy 0/mod/indirect 1/rm32/ecx . . . 0/r32/eax . . # copy *ecx to eax
81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-input-stream/imm32 # subtract from eax
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
# check-ints-equal(slice->end - _test-input-stream->data, 9, msg)
# . check-ints-equal(slice->end - _test-input-stream, 21, msg)
# . . push args
68/push "F - test-next-word-or-string-returns-string-with-escapes: end"/imm32
68/push 0x15/imm32
# . . push slice->end - _test-input-stream
8b/copy 1/mod/*+disp8 1/rm32/ecx . . . 0/r32/eax 4/disp8 . # copy *(ecx+4) to eax
81 5/subop/subtract 3/mod/direct 0/rm32/eax . . . . . _test-input-stream/imm32 # subtract from eax
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
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
string-length-at-start-of-slice: # curr : (address byte), end : (address byte) -> length/eax
# . 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
53/push-ebx
# ecx = curr
8b/copy 1/mod/*+disp8 5/rm32/ebp . . 1/r32/ecx 8/disp8 . # copy *(ebp+8) to ecx
# edx = end
8b/copy 1/mod/*+disp8 5/rm32/ebp . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx
# length/eax = 0
31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax
# ebx = 0
31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx
# skip initial dquote
41/increment-ecx
$string-length-at-start-of-slice:loop:
# if (curr >= end) return length
39/compare 3/mod/direct 1/rm32/ecx . . . 2/r32/edx . . # compare ecx with edx
73/jump-if-greater-unsigned-or-equal $string-length-at-start-of-slice:end/disp8
# BL = *curr
8a/copy-byte 0/mod/indirect 1/rm32/ecx . . . 3/r32/BL . . # copy byte at *ecx to BL
$string-length-at-start-of-slice:dquote:
# if (ebx == '"') break
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x22/imm32/dquote # compare ebx
74/jump-if-equal $string-length-at-start-of-slice:end/disp8
$string-length-at-start-of-slice:check-for-escape:
# if (ebx == '\') escape next char
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x5c/imm32/backslash # compare ebx
75/jump-if-not-equal $string-length-at-start-of-slice:continue/disp8
$string-length-at-start-of-slice:escape:
# increment curr but not result
41/increment-ecx
$string-length-at-start-of-slice:continue:
# ++result
40/increment-eax
# ++curr
41/increment-ecx
eb/jump $string-length-at-start-of-slice:loop/disp8
$string-length-at-start-of-slice:end:
# . restore registers
5b/pop-to-ebx
5a/pop-to-edx
59/pop-to-ecx
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-string-length-at-start-of-slice:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup: (eax..ecx) = "\"abc\" def"
b8/copy-to-eax "\"abc\" def"/imm32
8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx
05/add-to-eax 4/imm32
# eax = string-length-at-start-of-slice(eax, ecx)
# . . push args
51/push-ecx
50/push-eax
# . . call
e8/call string-length-at-start-of-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# check-ints-equal(eax, 3, msg)
# . . push args
68/push "F - test-string-length-at-start-of-slice"/imm32
68/push 3/imm32
50/push-eax
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-string-length-at-start-of-slice-escaped:
# . prolog
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# setup: (eax..ecx) = "\"ab\\c\" def"
b8/copy-to-eax "\"ab\\c\" def"/imm32
8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx
05/add-to-eax 4/imm32
# eax = string-length-at-start-of-slice(eax, ecx)
# . . push args
51/push-ecx
50/push-eax
# . . call
e8/call string-length-at-start-of-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# check-ints-equal(eax, 3, msg)
# . . push args
68/push "F - test-string-length-at-start-of-slice-escaped"/imm32
68/push 3/imm32
50/push-eax
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilog
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
== data
Next-string-literal: # tracks the next auto-generated variable name
1/imm32
# length-prefixed string containing just a single space
Space:
# size
1/imm32
# data
20/space
# length-prefixed string containing just a single slash
Slash:
# size
1/imm32
# data
2f/slash
_test-slice-abc:
22/dquote 61/a 62/b 63/c 22/dquote # "abc"
2f/slash 64/d
_test-slice-abc-limit:
_test-slice-a-space-b:
22/dquote 61/a 20/space 62/b 22/dquote # "a b"
_test-slice-a-space-b-limit:
_test-slice-a-dquote-b:
22/dquote 61/a 5c/backslash 22/dquote 62/b 22/dquote # "a\"b"
_test-slice-a-dquote-b-limit:
_test-slice-a-newline-b:
22/dquote 61/a 5c/backslash 6e/n 62/b 22/dquote # "a\nb"
_test-slice-a-newline-b-limit:
# "abc/def"/ghi
_test-slice-literal-string:
22/dquote
61/a 62/b 63/c # abc
2f/slash 64/d 65/e 66/f # /def
22/dquote
2f/slash 67/g 68/h 69/i # /ghi
_test-slice-literal-string-with-limit:
# . . vim:nowrap:textwidth=0