474 lines
24 KiB
Plaintext
474 lines
24 KiB
Plaintext
== code
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# instruction effective address register displacement immediate
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# . op subop mod rm32 base index scale r32
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# . 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
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# If datum of 'word' is not a valid name, it must be a hex int. Parse and print
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# it in 'width' bytes of hex, least significant first.
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# Otherwise just print the entire word including metadata.
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# Always print a trailing space.
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emit: # out: (addr buffered-file), word: (addr slice), width: int
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# . prologue
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55/push-ebp
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89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
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# . save registers
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50/push-eax
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56/push-esi
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57/push-edi
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# esi = word
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8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi
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# var datum/edi: slice
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68/push 0/imm32/end
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68/push 0/imm32/start
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89/copy 3/mod/direct 7/rm32/edi . . . 4/r32/esp . . # copy esp to edi
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# datum = next-token-from-slice(word->start, word->end, '/')
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# . . push args
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57/push-edi
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68/push 0x2f/imm32/slash
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ff 6/subop/push 1/mod/*+disp8 6/rm32/esi . . . . 4/disp8 . # push *(esi+4)
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ff 6/subop/push 0/mod/indirect 6/rm32/esi . . . . . . # push *esi
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# . . call
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e8/call next-token-from-slice/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp
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# if (valid-name?(datum)) write-slice-buffered(out, word) and return
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# . eax = valid-name?(name)
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# . . push args
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57/push-edi
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# . . call
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e8/call valid-name?/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# . if (eax != false)
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3d/compare-eax-and 0/imm32/false
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74/jump-if-= $emit:hex-int/disp8
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$emit:name:
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# . write-slice-buffered(out, word)
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# . . push args
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56/push-esi
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ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
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# . . call
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e8/call write-slice-buffered/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
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# . write-buffered(out, " ")
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# . . push args
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68/push Space/imm32
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ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
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# . . call
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e8/call write-buffered/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
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# . return
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eb/jump $emit:end/disp8
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# otherwise emit-hex(out, parse-hex-int-from-slice(datum), width)
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# (Weird shit can happen here if the datum of 'word' isn't either a valid
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# name or a hex number. `emit` is mostly used by translate_subx, which
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# is currently designed to only receive legal SubX programs. We just
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# want to make sure that valid names aren't treated as (valid) hex
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# numbers.)
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$emit:hex-int:
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# . var value/eax: int = parse-hex-int-from-slice(datum)
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# . . push args
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57/push-edi
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# . . call
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e8/call parse-hex-int-from-slice/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# . emit-hex(out, value, width)
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# . . push args
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ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16)
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50/push-eax
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ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8)
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# . . call
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e8/call emit-hex/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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$emit:end:
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# . reclaim locals
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
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# . restore registers
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5f/pop-to-edi
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5e/pop-to-esi
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58/pop-to-eax
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# . epilogue
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89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
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5d/pop-to-ebp
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c3/return
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test-emit-number:
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# . prologue
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55/push-ebp
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89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
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# setup
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# . clear-stream(_test-output-stream)
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# . . push args
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68/push _test-output-stream/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# . clear-stream($_test-output-buffered-file->buffer)
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# . . push args
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68/push $_test-output-buffered-file->buffer/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# (eax..ecx) = "30"
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b8/copy-to-eax "30"/imm32
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8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
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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
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05/add-to-eax 4/imm32
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# var slice/ecx: slice = {eax, ecx}
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51/push-ecx
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50/push-eax
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89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
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# emit(_test-output-buffered-file, slice, 1)
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# . . push args
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68/push 1/imm32
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51/push-ecx
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call emit/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# flush(_test-output-buffered-file)
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# . . push args
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call flush/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# check-stream-equal(_test-output-stream, "30 ", msg)
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# . . push args
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68/push "F - test-emit-number/1"/imm32
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68/push "30 "/imm32
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68/push _test-output-stream/imm32
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# . . call
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e8/call check-stream-equal/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# . epilogue
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89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
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5d/pop-to-ebp
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c3/return
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test-emit-negative-number:
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# test support for sign-extending negative numbers
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# . prologue
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55/push-ebp
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89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
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# setup
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# . clear-stream(_test-output-stream)
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# . . push args
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68/push _test-output-stream/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# . clear-stream($_test-output-buffered-file->buffer)
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# . . push args
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68/push $_test-output-buffered-file->buffer/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# (eax..ecx) = "-2"
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b8/copy-to-eax "-2"/imm32
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8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
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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
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05/add-to-eax 4/imm32
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# var slice/ecx: slice = {eax, ecx}
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51/push-ecx
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50/push-eax
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89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
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# emit(_test-output-buffered-file, slice, 2)
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# . . push args
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68/push 2/imm32
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51/push-ecx
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call emit/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# flush(_test-output-buffered-file)
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# . . push args
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call flush/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# check-stream-equal(_test-output-stream, "fe ff ", msg)
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# . . push args
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68/push "F - test-emit-number/1"/imm32
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68/push "fe ff "/imm32
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68/push _test-output-stream/imm32
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# . . call
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e8/call check-stream-equal/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# . epilogue
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89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
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5d/pop-to-ebp
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c3/return
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test-emit-number-with-metadata:
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# . prologue
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55/push-ebp
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89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
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# setup
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# . clear-stream(_test-output-stream)
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# . . push args
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68/push _test-output-stream/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# . clear-stream($_test-output-buffered-file->buffer)
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# . . push args
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68/push $_test-output-buffered-file->buffer/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# (eax..ecx) = "-2/foo"
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b8/copy-to-eax "-2/foo"/imm32
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8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
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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
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05/add-to-eax 4/imm32
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# var slice/ecx: slice = {eax, ecx}
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51/push-ecx
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50/push-eax
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89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
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# emit(_test-output-buffered-file, slice, 2)
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# . . push args
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68/push 2/imm32
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51/push-ecx
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call emit/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# flush(_test-output-buffered-file)
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# . . push args
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call flush/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# the '/foo' will have no impact on the output
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# check-stream-equal(_test-output-stream, "fe ff ", msg)
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# . . push args
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68/push "F - test-emit-number-with-metadata"/imm32
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68/push "fe ff "/imm32
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68/push _test-output-stream/imm32
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# . . call
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e8/call check-stream-equal/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# . epilogue
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89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
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5d/pop-to-ebp
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c3/return
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test-emit-non-number:
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# . prologue
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55/push-ebp
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89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
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# setup
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# . clear-stream(_test-output-stream)
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# . . push args
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68/push _test-output-stream/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# . clear-stream($_test-output-buffered-file->buffer)
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# . . push args
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68/push $_test-output-buffered-file->buffer/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# (eax..ecx) = "xyz"
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b8/copy-to-eax "xyz"/imm32
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8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
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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
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05/add-to-eax 4/imm32
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# var slice/ecx: slice = {eax, ecx}
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51/push-ecx
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50/push-eax
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89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
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# emit(_test-output-buffered-file, slice, 2)
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# . . push args
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68/push 2/imm32
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51/push-ecx
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call emit/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# flush(_test-output-buffered-file)
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# . . push args
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call flush/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# check-stream-equal(_test-output-stream, "xyz", msg)
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# . . push args
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68/push "F - test-emit-non-number"/imm32
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68/push "xyz "/imm32
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68/push _test-output-stream/imm32
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# . . call
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e8/call check-stream-equal/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# . epilogue
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89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
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5d/pop-to-ebp
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c3/return
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test-emit-non-number-with-metadata:
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# . prologue
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55/push-ebp
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89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
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# setup
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# . clear-stream(_test-output-stream)
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# . . push args
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68/push _test-output-stream/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# . clear-stream($_test-output-buffered-file->buffer)
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# . . push args
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68/push $_test-output-buffered-file->buffer/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# (eax..ecx) = "xyz/"
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b8/copy-to-eax "xyz/"/imm32
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8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
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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
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05/add-to-eax 4/imm32
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# var slice/ecx: slice = {eax, ecx}
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51/push-ecx
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50/push-eax
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89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
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# emit(_test-output-buffered-file, slice, 2)
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# . . push args
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68/push 2/imm32
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51/push-ecx
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call emit/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# flush(_test-output-buffered-file)
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# . . push args
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call flush/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# check-stream-equal(_test-output-stream, "xyz/", msg)
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# . . push args
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68/push "F - test-emit-non-number-with-metadata"/imm32
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68/push "xyz/ "/imm32
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68/push _test-output-stream/imm32
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# . . call
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e8/call check-stream-equal/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# . epilogue
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89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
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5d/pop-to-ebp
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c3/return
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test-emit-non-number-with-all-hex-digits-and-metadata:
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# . prologue
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55/push-ebp
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89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp
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# setup
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# . clear-stream(_test-output-stream)
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# . . push args
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68/push _test-output-stream/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# . clear-stream($_test-output-buffered-file->buffer)
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# . . push args
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68/push $_test-output-buffered-file->buffer/imm32
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# . . call
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e8/call clear-stream/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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# (eax..ecx) = "abcd/xyz"
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b8/copy-to-eax "abcd/xyz"/imm32
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8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx
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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
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05/add-to-eax 4/imm32
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# var slice/ecx: slice = {eax, ecx}
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51/push-ecx
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50/push-eax
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89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx
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# emit(_test-output-buffered-file, slice, 2)
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# . . push args
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68/push 2/imm32
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51/push-ecx
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call emit/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# flush(_test-output-buffered-file)
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# . . push args
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68/push _test-output-buffered-file/imm32
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# . . call
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e8/call flush/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp
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#? # dump output {{{
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#? # . write(2/stderr, "^")
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#? # . . push args
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#? 68/push "^"/imm32
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#? 68/push 2/imm32/stderr
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#? # . . call
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#? e8/call write/disp32
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#? # . . discard args
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#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
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#? # . write-stream(2/stderr, _test-output-stream)
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#? # . . push args
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#? 68/push _test-output-stream/imm32
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#? 68/push 2/imm32/stderr
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#? # . . call
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#? e8/call write-stream/disp32
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#? # . . discard args
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#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
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#? # . write(2/stderr, "$\n")
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#? # . . push args
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#? 68/push "$\n"/imm32
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#? 68/push 2/imm32/stderr
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#? # . . call
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#? e8/call write/disp32
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#? # . . discard args
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#? 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp
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#? # }}}
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# check-stream-equal(_test-output-stream, "abcd/xyz")
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# . . push args
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68/push "F - test-emit-non-number-with-all-hex-digits"/imm32
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68/push "abcd/xyz "/imm32
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68/push _test-output-stream/imm32
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# . . call
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e8/call check-stream-equal/disp32
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# . . discard args
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81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp
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# . epilogue
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89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp
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5d/pop-to-ebp
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c3/return
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