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124next-token.subx
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124next-token.subx
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# Some tokenization primitives.
== 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
# extract the next run of characters that are different from a given 'delimiter' (skipping multiple delimiters if necessary)
# on reaching end of file, return an empty interval
next-token-from-slice: # start: (addr byte), end: (addr byte), delimiter: byte, out: (addr slice)
# . 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
57/push-edi
# ecx = end
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx
# edx = delimiter
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0x10/disp8 . # copy *(ebp+16) to edx
# edi = out
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 0x14/disp8 . # copy *(ebp+20) to edi
# eax = skip-chars-matching-in-slice(start, end, delimiter)
# . . push args
52/push-edx
51/push-ecx
ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
# . . call
e8/call skip-chars-matching-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# out->start = eax
89/copy 0/mod/indirect 7/rm32/edi . . . 0/r32/eax . . # copy eax to *edi
# eax = skip-chars-not-matching-in-slice(eax, end, delimiter)
# . . push args
52/push-edx
51/push-ecx
50/push-eax
# . . call
e8/call skip-chars-not-matching-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# out->end = eax
89/copy 1/mod/*+disp8 7/rm32/edi . . . 0/r32/eax 4/disp8 . # copy eax to *(edi+4)
# . restore registers
5f/pop-to-edi
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
test-next-token-from-slice:
# . prologue
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# (eax..ecx) = " ab"
b8/copy-to-eax " ab"/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 out/edi: slice
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 7/rm32/edi . . . 4/r32/esp . . # copy esp to edi
# next-token-from-slice(eax, ecx, 0x20/space, out)
# . . push args
57/push-edi
68/push 0x20/imm32
51/push-ecx
50/push-eax
# . . call
e8/call next-token-from-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp
# out->start should be at the 'a'
# . check-ints-equal(out->start - in->start, 2, msg)
# . . push args
68/push "F - test-next-token-from-slice: start"/imm32
68/push 2/imm32
# . . push out->start - in->start
8b/copy 0/mod/indirect 7/rm32/edi . . . 1/r32/ecx . . # copy *edi to ecx
2b/subtract 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # subtract eax from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# out->end should be after the 'b'
# check-ints-equal(out->end - in->start, 4, msg)
# . . push args
68/push "F - test-next-token-from-slice: end"/imm32
68/push 4/imm32
# . . push out->end - in->start
8b/copy 1/mod/*+disp8 7/rm32/edi . . . 1/r32/ecx 4/disp8 . # copy *(edi+4) to ecx
2b/subtract 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # subtract eax from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilogue
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-next-token-from-slice-Eof:
# . prologue
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# var out/edi: slice
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 7/rm32/edi . . . 4/r32/esp . . # copy esp to edi
# next-token-from-slice(0, 0, 0x20/space, out)
# . . push args
57/push-edi
68/push 0x20/imm32
68/push 0/imm32
68/push 0/imm32
# . . call
e8/call next-token-from-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp
# out should be empty
# . check-ints-equal(out->end - out->start, 0, msg)
# . . push args
68/push "F - test-next-token-from-slice-Eof"/imm32
68/push 0/imm32
# . . push out->start - in->start
8b/copy 1/mod/*+disp8 7/rm32/edi . . . 1/r32/ecx 4/disp8 . # copy *(edi+4) to ecx
2b/subtract 0/mod/indirect 7/rm32/edi . . . 1/r32/ecx . . # subtract *edi from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilogue
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
test-next-token-from-slice-nothing:
# . prologue
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# (eax..ecx) = " "
b8/copy-to-eax " "/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 out/edi: slice
68/push 0/imm32/end
68/push 0/imm32/start
89/copy 3/mod/direct 7/rm32/edi . . . 4/r32/esp . . # copy esp to edi
# next-token-from-slice(in, 0x20/space, out)
# . . push args
57/push-edi
68/push 0x20/imm32
51/push-ecx
50/push-eax
# . . call
e8/call next-token-from-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp
# out should be empty
# . check-ints-equal(out->end - out->start, 0, msg)
# . . push args
68/push "F - test-next-token-from-slice-Eof"/imm32
68/push 0/imm32
# . . push out->start - in->start
8b/copy 1/mod/*+disp8 7/rm32/edi . . . 1/r32/ecx 4/disp8 . # copy *(edi+4) to ecx
2b/subtract 0/mod/indirect 7/rm32/edi . . . 1/r32/ecx . . # subtract *edi from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# . epilogue
89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
5d/pop-to-ebp
c3/return
skip-chars-matching: # in: (addr stream byte), delimiter: byte
# . 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
# esi = in
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi
# ecx = in->read
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx
# ebx = in->write
8b/copy 0/mod/indirect 6/rm32/esi . . . 3/r32/ebx . . # copy *esi to ebx
# edx = delimiter
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx
$skip-chars-matching:loop:
# if (in->read >= in->write) break
39/compare 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx . . # compare ecx with ebx
7d/jump-if->= $skip-chars-matching:end/disp8
# eax = in->data[in->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
# if (eax != delimiter) break
39/compare 3/mod/direct 0/rm32/eax . . . 2/r32/edx . . # compare eax and edx
75/jump-if-!= $skip-chars-matching:end/disp8
# ++in->read
41/increment-ecx
eb/jump $skip-chars-matching:loop/disp8
$skip-chars-matching:end:
# persist in->read
89/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy ecx to *(esi+4)
# . restore registers
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
test-skip-chars-matching:
# setup
# . clear-stream(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# write(_test-stream, " ab")
# . . push args
68/push " ab"/imm32
68/push _test-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# skip-chars-matching(_test-stream, 0x20/space)
# . . push args
68/push 0x20/imm32
68/push _test-stream/imm32
# . . call
e8/call skip-chars-matching/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# check-ints-equal(_test-stream->read, 2, msg)
# . . push args
68/push "F - test-skip-chars-matching"/imm32
68/push 2/imm32
# . . push *_test-stream->read
b8/copy-to-eax _test-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
# end
c3/return
test-skip-chars-matching-none:
# setup
# . clear-stream(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# write(_test-stream, "ab")
# . . push args
68/push "ab"/imm32
68/push _test-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# skip-chars-matching(_test-stream, 0x20/space)
# . . push args
68/push 0x20/imm32
68/push _test-stream/imm32
# . . call
e8/call skip-chars-matching/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# check-ints-equal(_test-stream->read, 0, msg)
# . . push args
68/push "F - test-skip-chars-matching-none"/imm32
68/push 0/imm32
# . . push *_test-stream->read
b8/copy-to-eax _test-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
# end
c3/return
skip-chars-matching-whitespace: # in: (addr stream byte)
# . 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
53/push-ebx
56/push-esi
# esi = in
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi
# ecx = in->read
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx
# ebx = in->write
8b/copy 0/mod/indirect 6/rm32/esi . . . 3/r32/ebx . . # copy *esi to ebx
$skip-chars-matching-whitespace:loop:
# if (in->read >= in->write) break
39/compare 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx . . # compare ecx with ebx
7d/jump-if->= $skip-chars-matching-whitespace:end/disp8
# eax = in->data[in->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
# if (eax == ' ') goto body
3d/compare-eax-and 0x20/imm32/space
74/jump-if-= $skip-chars-matching-whitespace:body/disp8
# if (eax == '\n') goto body
3d/compare-eax-and 0x0a/imm32/newline
74/jump-if-= $skip-chars-matching-whitespace:body/disp8
# if (eax == '\t') goto body
3d/compare-eax-and 0x09/imm32/tab
74/jump-if-= $skip-chars-matching-whitespace:body/disp8
# if (eax != '\r') break
3d/compare-eax-and 0x0d/imm32/cr
75/jump-if-!= $skip-chars-matching-whitespace:end/disp8
$skip-chars-matching-whitespace:body:
# ++in->read
41/increment-ecx
eb/jump $skip-chars-matching-whitespace:loop/disp8
$skip-chars-matching-whitespace:end:
# persist in->read
89/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy ecx to *(esi+4)
# . restore registers
5e/pop-to-esi
5b/pop-to-ebx
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
test-skip-chars-matching-whitespace:
# setup
# . clear-stream(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# write(_test-stream, " \nab")
# . . push args
68/push " \nab"/imm32
68/push _test-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# skip-chars-matching-whitespace(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . call
e8/call skip-chars-matching-whitespace/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# check-ints-equal(_test-stream->read, 2, msg)
# . . push args
68/push "F - test-skip-chars-matching-whitespace"/imm32
68/push 2/imm32
# . . push *_test-stream->read
b8/copy-to-eax _test-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
# end
c3/return
# minor fork of 'skip-chars-matching'
skip-chars-not-matching: # in: (addr stream byte), delimiter: byte
# . 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
# esi = in
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi
# ecx = in->read
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx
# ebx = in->write
8b/copy 0/mod/indirect 6/rm32/esi . . . 3/r32/ebx . . # copy *esi to ebx
# edx = delimiter
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx
$skip-chars-not-matching:loop:
# if (in->read >= in->write) break
39/compare 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx . . # compare ecx with ebx
7d/jump-if->= $skip-chars-not-matching:end/disp8
# eax = in->data[in->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
# if (eax == delimiter) break
39/compare 3/mod/direct 0/rm32/eax . . . 2/r32/edx . . # compare eax and edx
74/jump-if-= $skip-chars-not-matching:end/disp8
# ++in->read
41/increment-ecx
eb/jump $skip-chars-not-matching:loop/disp8
$skip-chars-not-matching:end:
# persist in->read
89/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy ecx to *(esi+4)
# . restore registers
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
test-skip-chars-not-matching:
# setup
# . clear-stream(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# write(_test-stream, "ab ")
# . . push args
68/push "ab "/imm32
68/push _test-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# skip-chars-not-matching(_test-stream, 0x20/space)
# . . push args
68/push 0x20/imm32
68/push _test-stream/imm32
# . . call
e8/call skip-chars-not-matching/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# check-ints-equal(_test-stream->read, 2, msg)
# . . push args
68/push "F - test-skip-chars-not-matching"/imm32
68/push 2/imm32
# . . push *_test-stream->read
b8/copy-to-eax _test-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
# end
c3/return
test-skip-chars-not-matching-none:
# setup
# . clear-stream(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# write(_test-stream, " ab")
# . . push args
68/push " ab"/imm32
68/push _test-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# skip-chars-not-matching(_test-stream, 0x20/space)
# . . push args
68/push 0x20/imm32
68/push _test-stream/imm32
# . . call
e8/call skip-chars-not-matching/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# check-ints-equal(_test-stream->read, 0, msg)
# . . push args
68/push "F - test-skip-chars-not-matching-none"/imm32
68/push 0/imm32
# . . push *_test-stream->read
b8/copy-to-eax _test-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
# end
c3/return
test-skip-chars-not-matching-all:
# setup
# . clear-stream(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# write(_test-stream, "ab")
# . . push args
68/push "ab"/imm32
68/push _test-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# skip-chars-not-matching(_test-stream, 0x20/space)
# . . push args
68/push 0x20/imm32
68/push _test-stream/imm32
# . . call
e8/call skip-chars-not-matching/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# check-ints-equal(_test-stream->read, 2, msg)
# . . push args
68/push "F - test-skip-chars-not-matching-all"/imm32
68/push 2/imm32
# . . push *_test-stream->read
b8/copy-to-eax _test-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
# end
c3/return
skip-chars-not-matching-whitespace: # in: (addr stream byte)
# . 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
53/push-ebx
56/push-esi
# esi = in
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi
# ecx = in->read
8b/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy *(esi+4) to ecx
# ebx = in->write
8b/copy 0/mod/indirect 6/rm32/esi . . . 3/r32/ebx . . # copy *esi to ebx
$skip-chars-not-matching-whitespace:loop:
# if (in->read >= in->write) break
39/compare 3/mod/direct 1/rm32/ecx . . . 3/r32/ebx . . # compare ecx with ebx
7d/jump-if->= $skip-chars-not-matching-whitespace:end/disp8
# eax = in->data[in->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
# if (eax == ' ') break
3d/compare-eax-and 0x20/imm32/space
74/jump-if-= $skip-chars-not-matching-whitespace:end/disp8
# if (eax == '\n') break
3d/compare-eax-and 0x0a/imm32/newline
74/jump-if-= $skip-chars-not-matching-whitespace:end/disp8
# if (eax == '\t') break
3d/compare-eax-and 0x09/imm32/tab
74/jump-if-= $skip-chars-not-matching-whitespace:end/disp8
# if (eax == '\r') break
3d/compare-eax-and 0x0d/imm32/cr
74/jump-if-= $skip-chars-not-matching-whitespace:end/disp8
# ++in->read
41/increment-ecx
eb/jump $skip-chars-not-matching-whitespace:loop/disp8
$skip-chars-not-matching-whitespace:end:
# persist in->read
89/copy 1/mod/*+disp8 6/rm32/esi . . . 1/r32/ecx 4/disp8 . # copy ecx to *(esi+4)
# . restore registers
5e/pop-to-esi
5b/pop-to-ebx
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
test-skip-chars-not-matching-whitespace:
# setup
# . clear-stream(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . call
e8/call clear-stream/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
# write(_test-stream, "ab\n")
# . . push args
68/push "ab\n"/imm32
68/push _test-stream/imm32
# . . call
e8/call write/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# skip-chars-not-matching-whitespace(_test-stream)
# . . push args
68/push _test-stream/imm32
# . . 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
# check-ints-equal(_test-stream->read, 2, msg)
# . . push args
68/push "F - test-skip-chars-not-matching-whitespace"/imm32
68/push 2/imm32
# . . push *_test-stream->read
b8/copy-to-eax _test-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
# end
c3/return
skip-chars-matching-in-slice: # curr: (addr byte), end: (addr byte), delimiter: byte -> curr/eax: (addr byte)
# . prologue
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
# eax = curr
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax
# ecx = end
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx
# edx = delimiter
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0x10/disp8 . # copy *(ebp+16) to edx
# var c/ebx: byte = 0
31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx
$skip-chars-matching-in-slice:loop:
# if (curr >= end) break
39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx
73/jump-if-addr>= $skip-chars-matching-in-slice:end/disp8
# c = *curr
8a/copy-byte 0/mod/indirect 0/rm32/eax . . . 3/r32/BL . . # copy byte at *eax to BL
# if (c != delimiter) break
39/compare 3/mod/direct 3/rm32/ebx . . . 2/r32/edx . . # compare ebx and edx
75/jump-if-!= $skip-chars-matching-in-slice:end/disp8
# ++curr
40/increment-eax
eb/jump $skip-chars-matching-in-slice:loop/disp8
$skip-chars-matching-in-slice:end:
# . restore registers
5b/pop-to-ebx
5a/pop-to-edx
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-skip-chars-matching-in-slice:
# (eax..ecx) = " ab"
b8/copy-to-eax " ab"/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 = skip-chars-matching-in-slice(eax, ecx, 0x20/space)
# . . push args
68/push 0x20/imm32/space
51/push-ecx
50/push-eax
# . . call
e8/call skip-chars-matching-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# check-ints-equal(ecx-eax, 2, msg)
# . . push args
68/push "F - test-skip-chars-matching-in-slice"/imm32
68/push 2/imm32
# . . push ecx-eax
29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# end
c3/return
test-skip-chars-matching-in-slice-none:
# (eax..ecx) = "ab"
b8/copy-to-eax "ab"/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 = skip-chars-matching-in-slice(eax, ecx, 0x20/space)
# . . push args
68/push 0x20/imm32/space
51/push-ecx
50/push-eax
# . . call
e8/call skip-chars-matching-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# check-ints-equal(ecx-eax, 2, msg)
# . . push args
68/push "F - test-skip-chars-matching-in-slice-none"/imm32
68/push 2/imm32
# . . push ecx-eax
29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# end
c3/return
skip-chars-matching-whitespace-in-slice: # curr: (addr byte), end: (addr byte) -> curr/eax: (addr byte)
# . prologue
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# . save registers
51/push-ecx
53/push-ebx
# eax = curr
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax
# ecx = end
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx
# var c/ebx: byte = 0
31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx
$skip-chars-matching-whitespace-in-slice:loop:
# if (curr >= end) break
39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx
0f 83/jump-if-addr>= $skip-chars-matching-in-slice:end/disp32
# c = *curr
8a/copy-byte 0/mod/indirect 0/rm32/eax . . . 3/r32/BL . . # copy byte at *eax to BL
# if (c == ' ') goto body
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x20/imm32/space # compare ebx
74/jump-if-= $skip-chars-matching-whitespace-in-slice:body/disp8
# if (c == '\n') goto body
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x0a/imm32/newline # compare ebx
74/jump-if-= $skip-chars-matching-whitespace-in-slice:body/disp8
# if (c == '\t') goto body
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x09/imm32/tab # compare ebx
74/jump-if-= $skip-chars-matching-whitespace-in-slice:body/disp8
# if (c != '\r') break
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x0d/imm32/cr # compare ebx
75/jump-if-!= $skip-chars-matching-whitespace-in-slice:end/disp8
$skip-chars-matching-whitespace-in-slice:body:
# ++curr
40/increment-eax
eb/jump $skip-chars-matching-whitespace-in-slice:loop/disp8
$skip-chars-matching-whitespace-in-slice:end:
# . restore registers
5b/pop-to-ebx
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-skip-chars-matching-whitespace-in-slice:
# (eax..ecx) = " \nab"
b8/copy-to-eax " \nab"/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 = skip-chars-matching-whitespace-in-slice(eax, ecx)
# . . push args
51/push-ecx
50/push-eax
# . . call
e8/call skip-chars-matching-whitespace-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
# check-ints-equal(ecx-eax, 2, msg)
# . . push args
68/push "F - test-skip-chars-matching-whitespace-in-slice"/imm32
68/push 2/imm32
# . . push ecx-eax
29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# end
c3/return
# minor fork of 'skip-chars-matching-in-slice'
skip-chars-not-matching-in-slice: # curr: (addr byte), end: (addr byte), delimiter: byte -> curr/eax: (addr byte)
# . prologue
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
# eax = curr
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax
# ecx = end
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx
# edx = delimiter
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0x10/disp8 . # copy *(ebp+16) to edx
# var c/ebx: byte = 0
31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx
$skip-chars-not-matching-in-slice:loop:
# if (curr >= end) break
39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx
73/jump-if-addr>= $skip-chars-not-matching-in-slice:end/disp8
# c = *curr
8a/copy-byte 0/mod/indirect 0/rm32/eax . . . 3/r32/BL . . # copy byte at *eax to BL
# if (c == delimiter) break
39/compare 3/mod/direct 3/rm32/ebx . . . 2/r32/edx . . # compare ebx and edx
74/jump-if-= $skip-chars-not-matching-in-slice:end/disp8
# ++curr
40/increment-eax
eb/jump $skip-chars-not-matching-in-slice:loop/disp8
$skip-chars-not-matching-in-slice:end:
# . restore registers
5b/pop-to-ebx
5a/pop-to-edx
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-skip-chars-not-matching-in-slice:
# (eax..ecx) = "ab "
b8/copy-to-eax "ab "/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 = skip-chars-not-matching-in-slice(eax, ecx, 0x20/space)
# . . push args
68/push 0x20/imm32/space
51/push-ecx
50/push-eax
# . . call
e8/call skip-chars-not-matching-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# check-ints-equal(ecx-eax, 1, msg)
# . . push args
68/push "F - test-skip-chars-not-matching-in-slice"/imm32
68/push 1/imm32
# . . push ecx-eax
29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# end
c3/return
test-skip-chars-not-matching-in-slice-none:
# (eax..ecx) = " ab"
b8/copy-to-eax " ab"/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 = skip-chars-not-matching-in-slice(eax, ecx, 0x20/space)
# . . push args
68/push 0x20/imm32/space
51/push-ecx
50/push-eax
# . . call
e8/call skip-chars-not-matching-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# check-ints-equal(ecx-eax, 3, msg)
# . . push args
68/push "F - test-skip-chars-not-matching-in-slice-none"/imm32
68/push 3/imm32
# . . push ecx-eax
29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# end
c3/return
test-skip-chars-not-matching-in-slice-all:
# (eax..ecx) = "ab"
b8/copy-to-eax "ab"/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 = skip-chars-not-matching-in-slice(eax, ecx, 0x20/space)
# . . push args
68/push 0x20/imm32/space
51/push-ecx
50/push-eax
# . . call
e8/call skip-chars-not-matching-in-slice/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# check-ints-equal(ecx-eax, 0, msg)
# . . push args
68/push "F - test-skip-chars-not-matching-in-slice-all"/imm32
68/push 0/imm32
# . . push ecx-eax
29/subtract 3/mod/direct 1/rm32/ecx . . . 0/r32/eax . . # subtract eax from ecx
51/push-ecx
# . . call
e8/call check-ints-equal/disp32
# . . discard args
81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
# end
c3/return
skip-chars-not-matching-whitespace-in-slice: # curr: (addr byte), end: (addr byte) -> curr/eax: (addr byte)
# . prologue
55/push-ebp
89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
# . save registers
51/push-ecx
53/push-ebx
# eax = curr
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax
# ecx = end
8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0xc/disp8 . # copy *(ebp+12) to ecx
# var c/ebx: byte = 0
31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx
$skip-chars-not-matching-whitespace-in-slice:loop:
# if (curr >= end) break
39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax with ecx
0f 83/jump-if-addr>= $skip-chars-not-matching-in-slice:end/disp32
# c = *curr
8a/copy-byte 0/mod/indirect 0/rm32/eax . . . 3/r32/BL . . # copy byte at *eax to BL
# if (c == ' ') break
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x20/imm32/space # compare ebx
74/jump-if-= $skip-chars-not-matching-whitespace-in-slice:end/disp8
# if (c == '\n') break
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x0a/imm32/newline # compare ebx
74/jump-if-= $skip-chars-not-matching-whitespace-in-slice:end/disp8
# if (c == '\t') break
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x09/imm32/tab # compare ebx
74/jump-if-= $skip-chars-not-matching-whitespace-in-slice:end/disp8
# if (c == '\r') break
81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0x0d/imm32/cr # compare ebx
74/jump-if-= $skip-chars-not-matching-whitespace-in-slice:end/disp8
# ++curr
40/increment-eax
eb/jump $skip-chars-not-matching-whitespace-in-slice:loop/disp8
$skip-chars-not-matching-whitespace-in-slice:end:
# . restore registers
5b/pop-to-ebx
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-skip-chars-not-matching-whitespace-in-slice:
# (eax..ecx) = "ab\n"
b8/copy-to-eax "ab\n"/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 = skip-chars-not-matching-whitespace-in-slice(eax, ecx)
# . . push args
51/push-ecx
50/push-eax
# . . call
e8/call skip-chars-not-matching-whitespace-in-slice/disp32
# . . discard args