2019-08-01 00:37:09 +00:00
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# Desugar a few kinds of syntax.
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#
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# 1.
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2019-08-23 22:00:31 +00:00
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# $ echo "ab %eax" | ./subx run apps/desugar
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2019-08-01 00:37:09 +00:00
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# ab 3/mod 0/rm32
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#
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# 2.
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2019-08-23 22:00:31 +00:00
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# $ echo "ab *eax" | ./subx run apps/desugar
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2019-08-16 07:34:27 +00:00
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# ab 0/mod 0/rm32
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#
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# 3.
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2019-08-23 22:00:31 +00:00
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# $ echo "ab *(eax+4)" | ./subx run apps/desugar
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# ab 2/mod 0/rm32 4/disp32
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#
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# 4.
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# $ echo "ab *(eax+ecx)" | ./subx run apps/desugar
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# ab 0/mod 4/rm32 0/base 1/index 0/scale
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#
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# 5.
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# $ echo "ab *(eax+ecx+4)" | ./subx run apps/desugar
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# ab 2/mod 4/rm32 0/base 1/index 0/scale 4/disp32
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2019-08-23 22:33:13 +00:00
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#
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# 6.
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# $ echo "ab *(eax+ecx<<2+4)" | ./subx run apps/desugar
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# ab 2/mod 4/rm32 0/base 1/index 2/scale 4/disp32
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#
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# Addition isn't commutative here. Template must always be (base+index<<scale+disp),
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# though some components are optional as described above.
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#
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# No metadata allowed inside '*(...)'.
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# Whitespace inside '*(...)' is ok.
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2019-07-28 17:52:29 +00:00
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== 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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Entry: # run tests if necessary, convert stdin if not
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# initialize heap
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2019-08-13 17:57:05 +00:00
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# . Heap = new-segment(Heap-size)
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2019-07-28 17:52:29 +00:00
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# . . push args
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68/push Heap/imm32
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2019-08-13 17:57:05 +00:00
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ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Heap-size/disp32 # push *Heap-size
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2019-07-28 17:52:29 +00:00
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# . . call
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e8/call new-segment/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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2019-08-13 17:57:05 +00:00
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# run tests if necessary, convert stdin if not
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2019-07-28 17:52:29 +00:00
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# . prolog
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89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
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# - if argc > 1 and argv[1] == "test", then return run_tests()
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# . argc > 1
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81 7/subop/compare 1/mod/*+disp8 5/rm32/EBP . . . . 0/disp8 1/imm32 # compare *EBP
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7e/jump-if-lesser-or-equal $run-main/disp8
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# . argv[1] == "test"
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# . . push args
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68/push "test"/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 kernel-string-equal?/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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# . check result
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3d/compare-EAX-and 1/imm32
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75/jump-if-not-equal $run-main/disp8
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# . run-tests()
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e8/call run-tests/disp32
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8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/EBX Num-test-failures/disp32 # copy *Num-test-failures to EBX
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eb/jump $main:end/disp8
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$run-main:
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# - otherwise convert stdin
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2019-08-13 17:57:05 +00:00
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# convert(Stdin, Stdout)
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2019-07-28 17:52:29 +00:00
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# . . push args
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68/push Stdout/imm32
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68/push Stdin/imm32
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# . . call
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e8/call convert/disp32
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# . . discard args
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2019-08-01 00:33:32 +00:00
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81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x8/imm32 # add to ESP
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2019-07-28 17:52:29 +00:00
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# . syscall(exit, 0)
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bb/copy-to-EBX 0/imm32
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$main:end:
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b8/copy-to-EAX 1/imm32/exit
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cd/syscall 0x80/imm8
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2019-08-16 21:08:40 +00:00
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# error messages considered:
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# *x + 34 -> error: base+disp addressing must be within '()'
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2019-07-28 17:52:29 +00:00
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convert: # in : (address buffered-file), out : (address buffered-file) -> <void>
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2019-08-01 00:33:32 +00:00
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# pseudocode:
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# var line = new-stream(512, 1)
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# while true
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# clear-stream(line)
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# read-line-buffered(in, line)
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2019-08-16 07:12:31 +00:00
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# if (line->write == 0) break # end of file
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2019-08-01 00:33:32 +00:00
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# while true
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2019-08-16 21:08:40 +00:00
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# var word-slice = next-word-or-expression(line)
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2019-08-16 07:12:31 +00:00
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# if slice-empty?(word-slice) # end of line
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2019-08-01 00:33:32 +00:00
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# break
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2019-08-16 07:12:31 +00:00
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# if slice-starts-with?(word-slice, "#") # comment
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2019-08-01 00:33:32 +00:00
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# continue
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2019-08-16 07:17:40 +00:00
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# if slice-starts-with?(word-slice, '%') # direct mode
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# emit-direct-mode(word-slice, out)
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# else if slice-starts-with?(word-slice, '*') # indirect mode
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2019-08-16 21:08:40 +00:00
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# base, index, scale, disp = parse-effective-address(word-slice)
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# emit-indirect-mode(out, base, index, scale, disp)
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# else if slice-starts-with?(word-slice, '+')
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2019-08-23 18:07:26 +00:00
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# abort("'+' only permitted within '*(...)'")
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2019-08-01 00:33:32 +00:00
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# else
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# write-slice-buffered(out, word-slice)
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# write(out, " ")
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# write(out, "\n")
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# flush(out)
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#
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2019-07-28 17:52:29 +00:00
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# . prolog
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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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51/push-ECX
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52/push-EDX
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53/push-EBX
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# var line/ECX : (address stream byte) = stream(512)
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81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x200/imm32 # subtract from ESP
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68/push 0x200/imm32/length
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68/push 0/imm32/read
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68/push 0/imm32/write
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89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX
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# var word-slice/EDX = {0, 0}
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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 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX
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2019-08-01 00:33:32 +00:00
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$convert:line-loop:
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2019-07-28 17:52:29 +00:00
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# clear-stream(line)
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# . . push args
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51/push-ECX
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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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# read-line-buffered(in, line)
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# . . push args
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51/push-ECX
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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 read-line-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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2019-08-01 00:33:32 +00:00
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$convert:check0:
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# if (line->write == 0) break
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81 7/subop/compare 0/mod/indirect 1/rm32/ECX . . . . . 0/imm32 # compare *ECX
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0f 84/jump-if-equal $convert:break/disp32
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$convert:word-loop:
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2019-08-23 08:27:36 +00:00
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# next-word-or-expression(line, word-slice)
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2019-07-28 17:52:29 +00:00
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# . . push args
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52/push-EDX
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51/push-ECX
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# . . call
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2019-08-23 08:27:36 +00:00
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e8/call next-word-or-expression/disp32
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2019-07-28 17:52:29 +00:00
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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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$convert:check1:
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2019-08-01 00:33:32 +00:00
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# if (slice-empty?(word-slice)) break
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2019-07-28 17:52:29 +00:00
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# . EAX = slice-empty?(word-slice)
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# . . push args
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52/push-EDX
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# . . call
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e8/call slice-empty?/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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2019-08-01 00:33:32 +00:00
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# . if (EAX != 0) break
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2019-07-28 17:52:29 +00:00
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3d/compare-EAX-and 0/imm32
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2019-08-01 00:33:32 +00:00
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0f 85/jump-if-not-equal $convert:next-line/disp32
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$convert:check-for-comment:
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# if (slice-starts-with?(word-slice, "#")) continue
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# . start/EBX = word-slice->start
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8b/copy 0/mod/indirect 2/rm32/EDX . . . 3/r32/EBX . . # copy *EDX to EBX
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# . c/EAX = *start
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31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX
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8a/copy-byte 0/mod/indirect 3/rm32/EBX . . . 0/r32/AL . . # copy byte at *EBX to AL
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# . if (EAX == '#') continue
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3d/compare-EAX-and 0x23/imm32/hash
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74/jump-if-equal $convert:word-loop/disp8
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2019-08-16 07:17:40 +00:00
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$convert:check-for-direct-mode:
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2019-08-01 00:33:32 +00:00
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# if (!slice-starts-with?(word-slice, "%")) goto next check
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3d/compare-EAX-and 0x25/imm32/percent
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2019-08-16 07:34:27 +00:00
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75/jump-if-not-equal $convert:check-for-indirect-mode/disp8
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2019-08-16 07:17:40 +00:00
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$convert:direct-mode:
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2019-08-13 17:57:05 +00:00
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#? # dump word-slice {{{
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#? # . write(2/stderr, "w: ")
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#? # . . push args
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#? 68/push "w: "/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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#? # . clear-stream(Stderr+4)
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#? # . . save EAX
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#? 50/push-EAX
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#? # . . push args
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#? b8/copy-to-EAX Stderr/imm32
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#? 05/add-to-EAX 4/imm32
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#? 50/push-EAX
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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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#? # . . restore EAX
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#? 58/pop-to-EAX
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#? # . write-slice-buffered(Stderr, word-slice)
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#? # . . push args
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#? 52/push-EDX
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#? 68/push Stderr/imm32
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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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#? # . flush(Stderr)
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#? # . . push args
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#? 68/push Stderr/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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#? # . 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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2019-08-16 07:17:40 +00:00
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# emit-direct-mode(word-slice, out)
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2019-07-28 17:52:29 +00:00
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# . . push args
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2019-08-13 17:57:05 +00:00
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ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12)
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2019-07-28 17:52:29 +00:00
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52/push-EDX
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# . . call
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2019-08-16 07:17:40 +00:00
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e8/call emit-direct-mode/disp32
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2019-08-01 00:33:32 +00:00
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# . . discard args
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2019-07-28 17:52:29 +00:00
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81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
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2019-08-01 00:33:32 +00:00
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# continue
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2019-08-13 17:57:05 +00:00
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e9/jump $convert:next-word/disp32
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2019-08-16 07:34:27 +00:00
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$convert:check-for-indirect-mode:
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# if (!slice-starts-with?(word-slice, "*")) goto next check
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3d/compare-EAX-and 0x2a/imm32/asterisk
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2019-08-23 18:21:13 +00:00
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75/jump-if-not-equal $convert:check-for-invalid-addition/disp8
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2019-08-16 07:34:27 +00:00
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$convert:indirect-mode:
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2019-08-23 20:32:24 +00:00
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# spill registers
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50/push-EAX
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51/push-ECX
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52/push-EDX
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|
|
53/push-EBX
|
|
|
|
|
# base/EAX, index/ECX, scale/EDX, disp/EBX = parse-effective-address(word-slice)
|
|
|
|
|
# . . push args
|
|
|
|
|
52/push-EDX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call parse-effective-address/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
|
|
|
|
# restore registers
|
|
|
|
|
5b/pop-to-EBX
|
|
|
|
|
5a/pop-to-EDX
|
|
|
|
|
59/pop-to-ECX
|
|
|
|
|
58/pop-to-EAX
|
2019-08-16 07:34:27 +00:00
|
|
|
# emit-indirect-mode(word-slice, out)
|
|
|
|
|
# . . push args
|
|
|
|
|
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12)
|
|
|
|
|
52/push-EDX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call emit-indirect-mode/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
|
|
|
|
# continue
|
|
|
|
|
e9/jump $convert:next-word/disp32
|
2019-08-23 18:21:13 +00:00
|
|
|
$convert:check-for-invalid-addition:
|
|
|
|
|
# if (slice-starts-with?(word-slice, "+")) goto error1
|
|
|
|
|
3d/compare-EAX-and 0x2b/imm32/plus
|
|
|
|
|
74/jump-if-equal $convert:error1/disp8
|
|
|
|
|
$convert:check-for-invalid-left-shift:
|
|
|
|
|
# if (slice-starts-with?(word-slice, "<")) goto error1
|
|
|
|
|
3d/compare-EAX-and 0x3c/imm32/less-than
|
|
|
|
|
74/jump-if-equal $convert:error1/disp8
|
2019-08-01 00:33:32 +00:00
|
|
|
$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
|
2019-07-28 17:52:29 +00:00
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# loop
|
2019-08-13 17:57:05 +00:00
|
|
|
e9/jump $convert:word-loop/disp32
|
2019-08-01 00:33:32 +00:00
|
|
|
$convert:next-line:
|
|
|
|
|
# write-buffered(out, "\n")
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . push args
|
2019-08-01 00:33:32 +00:00
|
|
|
68/push Newline/imm32
|
2019-07-28 17:52:29 +00:00
|
|
|
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12)
|
|
|
|
|
# . . call
|
2019-08-01 00:33:32 +00:00
|
|
|
e8/call write-buffered/disp32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
2019-08-01 00:33:32 +00:00
|
|
|
# loop
|
|
|
|
|
e9/jump $convert:line-loop/disp32
|
2019-07-28 17:52:29 +00:00
|
|
|
$convert:break:
|
|
|
|
|
# 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
|
|
|
|
|
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
|
|
|
|
|
|
2019-08-23 18:21:13 +00:00
|
|
|
$convert:error1:
|
|
|
|
|
# print(stderr, "error: '" EAX "' only permitted within '*(...)' in '" line "'")
|
|
|
|
|
# . write-buffered(Stderr, "error: '")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "error: '"/imm32
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . write-byte-buffered(Stderr, EAX)
|
|
|
|
|
# . . push args
|
|
|
|
|
50/push-EAX
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-byte-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . write-buffered(Stderr, "' only permitted within '*(...)' in '")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "' only permitted within '*(...)' in '"/imm32
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . write-stream-data(Stderr, line)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-stream-data/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . write-buffered(Stderr, "'")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "'"/imm32
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . flush(Stderr)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call flush/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
|
|
|
|
# . syscall(exit, 1)
|
|
|
|
|
bb/copy-to-EBX 1/imm32
|
|
|
|
|
b8/copy-to-EAX 1/imm32/exit
|
|
|
|
|
cd/syscall 0x80/imm8
|
|
|
|
|
# never gets here
|
|
|
|
|
|
2019-08-16 07:17:40 +00:00
|
|
|
# beware: modifies 'word'
|
2019-08-16 21:09:56 +00:00
|
|
|
emit-direct-mode: # word : (address slice), out : (address buffered-file)
|
2019-07-28 17:52:29 +00:00
|
|
|
# . prolog
|
|
|
|
|
55/push-EBP
|
|
|
|
|
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
|
|
|
|
# . save registers
|
2019-08-01 21:50:19 +00:00
|
|
|
50/push-EAX
|
2019-08-16 07:17:40 +00:00
|
|
|
# ++word->start
|
|
|
|
|
# . EAX = word
|
|
|
|
|
8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 8/disp8 . # copy *(EBP+8) to EAX
|
|
|
|
|
# . ++(*EAX)
|
|
|
|
|
ff 0/subop/increment 0/mod/indirect 0/rm32/EAX . . . . . . # increment *EAX
|
2019-08-01 21:50:19 +00:00
|
|
|
# reg-num/EAX = get-slice(Registers, word, row-size=8)
|
|
|
|
|
# . . push args
|
2019-08-13 06:18:31 +00:00
|
|
|
68/push "Registers"/imm32
|
2019-08-01 21:50:19 +00:00
|
|
|
68/push 8/imm32/row-size
|
2019-07-28 17:52:29 +00:00
|
|
|
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8)
|
2019-08-01 21:50:19 +00:00
|
|
|
68/push Registers/imm32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . call
|
2019-08-01 21:50:19 +00:00
|
|
|
e8/call get-slice/disp32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . discard args
|
2019-08-13 06:18:31 +00:00
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP
|
2019-08-01 21:50:19 +00:00
|
|
|
# write-buffered(out, "3/mod/direct ")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "3/mod/direct "/imm32
|
|
|
|
|
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12)
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . call
|
2019-08-01 21:50:19 +00:00
|
|
|
e8/call write-buffered/disp32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
2019-08-01 21:50:19 +00:00
|
|
|
# print-int32-buffered(out, *EAX)
|
|
|
|
|
# . . push args
|
|
|
|
|
ff 6/subop/push 0/mod/indirect 0/rm32/EAX . . . . . . # push *EAX
|
|
|
|
|
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12)
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . call
|
2019-08-01 21:50:19 +00:00
|
|
|
e8/call print-int32-buffered/disp32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
2019-08-01 21:50:19 +00:00
|
|
|
# write-buffered(out, "/rm32")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "/rm32"/imm32
|
|
|
|
|
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12)
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . call
|
2019-08-01 21:50:19 +00:00
|
|
|
e8/call write-buffered/disp32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
2019-08-16 07:17:40 +00:00
|
|
|
$emit-direct-mode:end:
|
2019-07-28 17:52:29 +00:00
|
|
|
# . restore registers
|
2019-08-01 21:50:19 +00:00
|
|
|
58/pop-to-EAX
|
2019-07-28 17:52:29 +00:00
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
2019-08-16 07:17:40 +00:00
|
|
|
test-emit-direct-mode:
|
2019-07-28 17:52:29 +00:00
|
|
|
# . prolog
|
|
|
|
|
55/push-EBP
|
|
|
|
|
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
2019-08-01 21:50:19 +00:00
|
|
|
# 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
|
2019-08-16 07:17:40 +00:00
|
|
|
# var slice/ECX = "%eax"
|
|
|
|
|
b8/copy-to-EAX "%eax"/imm32
|
2019-07-28 17:52:29 +00:00
|
|
|
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
|
2019-08-01 21:50:19 +00:00
|
|
|
# . ECX = {EAX, ECX}
|
2019-07-28 17:52:29 +00:00
|
|
|
51/push-ECX
|
|
|
|
|
50/push-EAX
|
|
|
|
|
89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX
|
2019-08-16 07:17:40 +00:00
|
|
|
# emit-direct-mode(str, _test-output-buffered-file)
|
2019-08-01 21:50:19 +00:00
|
|
|
# . . push args
|
|
|
|
|
68/push _test-output-buffered-file/imm32
|
2019-07-28 17:52:29 +00:00
|
|
|
51/push-ECX
|
2019-08-01 21:50:19 +00:00
|
|
|
# . . call
|
2019-08-16 07:17:40 +00:00
|
|
|
e8/call emit-direct-mode/disp32
|
2019-08-01 21:50:19 +00:00
|
|
|
# . . discard args
|
2019-07-28 17:52:29 +00:00
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
2019-08-01 21:50:19 +00:00
|
|
|
# . flush(_test-output-buffered-file)
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . push args
|
2019-08-01 21:50:19 +00:00
|
|
|
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, "^")
|
|
|
|
|
#? # . . push args
|
|
|
|
|
#? 68/push "^"/imm32
|
|
|
|
|
#? 68/push 2/imm32/stderr
|
|
|
|
|
#? # . . call
|
|
|
|
|
#? e8/call write/disp32
|
|
|
|
|
#? # . . discard args
|
|
|
|
|
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
#? # . write-stream(2/stderr, _test-output-stream)
|
|
|
|
|
#? # . . push args
|
|
|
|
|
#? 68/push _test-output-stream/imm32
|
|
|
|
|
#? 68/push 2/imm32/stderr
|
|
|
|
|
#? # . . call
|
|
|
|
|
#? e8/call write-stream/disp32
|
|
|
|
|
#? # . . discard args
|
|
|
|
|
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
#? # . write(2/stderr, "$\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/mod/direct 0/rm32", msg)
|
|
|
|
|
# . . push args
|
2019-08-16 07:17:40 +00:00
|
|
|
68/push "F - test-emit-direct-mode/0"/imm32
|
2019-08-01 21:50:19 +00:00
|
|
|
68/push "3/mod/direct 0x00000000/rm32"/imm32
|
|
|
|
|
68/push _test-output-stream/imm32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . call
|
2019-08-01 21:50:19 +00:00
|
|
|
e8/call check-stream-equal/disp32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP
|
2019-08-01 21:50:19 +00:00
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
2019-08-16 07:17:40 +00:00
|
|
|
test-emit-direct-mode-2:
|
2019-08-01 21:50:19 +00:00
|
|
|
# . 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
|
2019-08-16 07:17:40 +00:00
|
|
|
# var slice/ECX = "%edi"
|
|
|
|
|
b8/copy-to-EAX "%edi"/imm32
|
2019-07-28 17:52:29 +00:00
|
|
|
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
|
2019-08-01 21:50:19 +00:00
|
|
|
# . ECX = {EAX, ECX}
|
2019-07-28 17:52:29 +00:00
|
|
|
51/push-ECX
|
|
|
|
|
50/push-EAX
|
|
|
|
|
89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX
|
2019-08-16 07:17:40 +00:00
|
|
|
# emit-direct-mode(str/ECX, _test-output-buffered-file)
|
2019-08-01 21:50:19 +00:00
|
|
|
# . . push args
|
|
|
|
|
68/push _test-output-buffered-file/imm32
|
2019-07-28 17:52:29 +00:00
|
|
|
51/push-ECX
|
2019-08-01 21:50:19 +00:00
|
|
|
# . . call
|
2019-08-16 07:17:40 +00:00
|
|
|
e8/call emit-direct-mode/disp32
|
2019-08-01 21:50:19 +00:00
|
|
|
# . . discard args
|
2019-07-28 17:52:29 +00:00
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
2019-08-01 21:50:19 +00:00
|
|
|
# . flush(_test-output-buffered-file)
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . push args
|
2019-08-01 21:50:19 +00:00
|
|
|
68/push _test-output-buffered-file/imm32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . call
|
2019-08-01 21:50:19 +00:00
|
|
|
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, "^")
|
|
|
|
|
#? # . . push args
|
|
|
|
|
#? 68/push "^"/imm32
|
|
|
|
|
#? 68/push 2/imm32/stderr
|
|
|
|
|
#? # . . call
|
|
|
|
|
#? e8/call write/disp32
|
|
|
|
|
#? # . . discard args
|
|
|
|
|
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
#? # . write-stream(2/stderr, _test-output-stream)
|
|
|
|
|
#? # . . push args
|
|
|
|
|
#? 68/push _test-output-stream/imm32
|
|
|
|
|
#? 68/push 2/imm32/stderr
|
|
|
|
|
#? # . . call
|
|
|
|
|
#? e8/call write-stream/disp32
|
|
|
|
|
#? # . . discard args
|
|
|
|
|
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
#? # . write(2/stderr, "$\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/mod/direct 7/rm32", msg)
|
|
|
|
|
# . . push args
|
2019-08-16 07:17:40 +00:00
|
|
|
68/push "F - test-emit-direct-mode/1"/imm32
|
2019-08-01 21:50:19 +00:00
|
|
|
68/push "3/mod/direct 0x00000007/rm32"/imm32
|
|
|
|
|
68/push _test-output-stream/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call check-stream-equal/disp32
|
2019-07-28 17:52:29 +00:00
|
|
|
# . . 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
|
2019-08-01 21:50:19 +00:00
|
|
|
|
2019-08-16 21:08:40 +00:00
|
|
|
# (re)compute the bounds of the next word or parenthetical expression in the line
|
|
|
|
|
# return empty string on reaching end of file
|
|
|
|
|
#
|
|
|
|
|
# error messages considered:
|
|
|
|
|
# * ... -> error: no space after '*'
|
|
|
|
|
# *(... -> error: *(...) expression must be all on a single line
|
|
|
|
|
next-word-or-expression: # 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
|
2019-08-23 08:27:36 +00:00
|
|
|
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-expression: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-expression: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-expression:end/disp8
|
|
|
|
|
$next-word-or-expression: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-expression:check-for-paren/disp8
|
|
|
|
|
$next-word-or-expression: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-expression:end/disp8
|
|
|
|
|
$next-word-or-expression:check-for-paren:
|
|
|
|
|
# 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 0x2a/imm32/asterisk
|
|
|
|
|
75/jump-if-not-equal $next-word-or-expression:regular-word/disp8
|
|
|
|
|
# if (line->data[line->read] != '(') goto error1
|
|
|
|
|
8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/ESI 1/index/ECX . 0/r32/AL 0xd/disp8 . # copy byte at *(ESI+ECX+12+1) to AL
|
|
|
|
|
# . compare
|
|
|
|
|
3d/compare-EAX-and 0x28/imm32/open-paren
|
|
|
|
|
75/jump-if-not-equal $next-word-or-expression:error1/disp8
|
|
|
|
|
$next-word-or-expression:paren:
|
|
|
|
|
# skip-until-close-paren(line)
|
|
|
|
|
# . . push args
|
|
|
|
|
56/push-ESI
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call skip-until-close-paren/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
|
|
|
|
# if (line->data[line->read] != ')') goto error2
|
|
|
|
|
8b/copy 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 4/disp8 . # copy *(ESI+4) to ECX
|
|
|
|
|
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 0x29/imm32/close-paren
|
|
|
|
|
75/jump-if-not-equal $next-word-or-expression:error2/disp8
|
|
|
|
|
# skip ')'
|
|
|
|
|
ff 0/subop/increment 1/mod/*+disp8 6/rm32/ESI . . . . 4/disp8 . # increment *(ESI+4)
|
|
|
|
|
# fall through
|
|
|
|
|
$next-word-or-expression: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)
|
2019-08-16 21:08:40 +00:00
|
|
|
$next-word-or-expression:end:
|
|
|
|
|
# . restore registers
|
2019-08-23 08:27:36 +00:00
|
|
|
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
|
|
|
|
|
|
|
|
|
|
$next-word-or-expression:error1:
|
|
|
|
|
# print(stderr, "error: no space allowed after '*' in '" line "'")
|
|
|
|
|
# . write-buffered(Stderr, "error: no space allowed after '*' in '")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "error: no space allowed after '*' in '"/imm32
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . write-stream-data(Stderr, line)
|
|
|
|
|
# . . push args
|
|
|
|
|
56/push-ESI
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-stream-data/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . write-buffered(Stderr, "'")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "'"/imm32
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . flush(Stderr)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call flush/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
|
|
|
|
# . syscall(exit, 1)
|
|
|
|
|
bb/copy-to-EBX 1/imm32
|
|
|
|
|
b8/copy-to-EAX 1/imm32/exit
|
|
|
|
|
cd/syscall 0x80/imm8
|
|
|
|
|
# never gets here
|
|
|
|
|
|
|
|
|
|
$next-word-or-expression:error2:
|
|
|
|
|
# print(stderr, "error: no space allowed after '*' in '" line "'")
|
|
|
|
|
# . write-buffered(Stderr, "error: *(...) expression must be all on a single line in '")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "error: *(...) expression must be all on a single line in '"/imm32
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . write-stream-data(Stderr, line)
|
|
|
|
|
# . . push args
|
|
|
|
|
56/push-ESI
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-stream-data/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . write-buffered(Stderr, "'")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "'"/imm32
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call write-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# . flush(Stderr)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push Stderr/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call flush/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
|
|
|
|
# . syscall(exit, 1)
|
|
|
|
|
bb/copy-to-EBX 1/imm32
|
|
|
|
|
b8/copy-to-EAX 1/imm32/exit
|
|
|
|
|
cd/syscall 0x80/imm8
|
|
|
|
|
# never gets here
|
|
|
|
|
|
|
|
|
|
test-next-word-or-expression:
|
|
|
|
|
# . 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-expression(_test-input-stream, slice)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
68/push _test-input-stream/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call next-word-or-expression/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-expression/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-expression: 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-expression: 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-expression-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-expression(_test-input-stream, slice)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
68/push _test-input-stream/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call next-word-or-expression/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-expression-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-expression-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-expression-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-expression-returns-empty-expression-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-expression(_test-input-stream, slice)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
68/push _test-input-stream/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call next-word-or-expression/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-expression-returns-empty-expression-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-expression-returns-whole-expression:
|
|
|
|
|
# . 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-expression(_test-input-stream, slice)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
68/push _test-input-stream/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call next-word-or-expression/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-expression-returns-whole-expression: 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, 13, msg)
|
|
|
|
|
# . check-ints-equal(slice->end - _test-input-stream, 25, msg)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-next-word-or-expression-returns-whole-expression: end"/imm32
|
|
|
|
|
68/push 0x19/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
|
2019-08-16 21:08:40 +00:00
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
|
|
|
|
# Grammar:
|
|
|
|
|
# *reg -> 0/mod reg/rm32
|
|
|
|
|
# *(reg) -> 0/mod reg/rm32
|
2019-08-23 18:07:26 +00:00
|
|
|
# *(reg+disp) -> 2/mod reg/rm32 disp/disp32
|
2019-08-16 21:08:40 +00:00
|
|
|
# *(reg1+reg2<<s) -> 2/mod 4/rm32 reg1/base reg2/index s/scale 0/disp32
|
|
|
|
|
# *(reg1+reg2<<s+disp) -> 2/mod 4/rm32 reg1/base reg2/index s/scale disp/disp32
|
|
|
|
|
# Intermediate structure: base, index, scale, disp
|
|
|
|
|
# Default values: base: 0, index: 4 (none), scale: 0, disp: 0
|
2019-08-16 07:34:27 +00:00
|
|
|
# beware: modifies 'word'
|
2019-08-16 21:08:40 +00:00
|
|
|
parse-effective-address: # word : (address slice) -> base/EAX, index/ECX, scale/EDX, disp/EBX
|
2019-08-23 22:33:13 +00:00
|
|
|
# pseudocode:
|
|
|
|
|
# ++word->start to skip '*'
|
|
|
|
|
# initialize defaults: base=0, index=4, scale=0, disp=0
|
|
|
|
|
# if (*word->start != '(') {
|
|
|
|
|
# base = get-slice(Registers, word, row-size=8)
|
|
|
|
|
# return
|
|
|
|
|
# }
|
|
|
|
|
# # compound expressions
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# read register into base
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# if (*word->start == ')') goto end
|
|
|
|
|
# if (*word->start != '+') goto error2
|
|
|
|
|
# ++word->start to skip '+'
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# read register into index
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# if (*word->start == ')') goto end
|
|
|
|
|
# if (*word->start == '<') {
|
|
|
|
|
# ++word->start to skip '<'
|
|
|
|
|
# if (*word->start != '<') goto error3
|
|
|
|
|
# ++word->start to skip '<'
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# read register into scale
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# if (*word->start == ')') goto end
|
|
|
|
|
# }
|
|
|
|
|
# if (*word->start != '+') goto error4
|
|
|
|
|
# ++word->start to skip '+'
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# read register into disp
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# if (*word->start != ')') goto error5
|
2019-08-16 21:08:40 +00:00
|
|
|
# . prolog
|
|
|
|
|
55/push-EBP
|
|
|
|
|
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
|
|
|
|
# . save registers
|
|
|
|
|
56/push-ESI
|
2019-08-23 21:23:25 +00:00
|
|
|
57/push-EDI
|
2019-08-16 21:08:40 +00:00
|
|
|
# ESI = word
|
2019-08-23 20:32:24 +00:00
|
|
|
8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI
|
2019-08-23 21:23:25 +00:00
|
|
|
# ++word->start to skip '*'
|
2019-08-23 20:32:24 +00:00
|
|
|
ff 0/subop/increment 0/mod/indirect 6/rm32/ESI . . . . . . # increment *ESI
|
2019-08-16 21:08:40 +00:00
|
|
|
# initialize defaults
|
2019-08-23 21:23:25 +00:00
|
|
|
# base is in EDI; we'll move it to EAX just before we return
|
|
|
|
|
bf/copy-to-EDI 0/imm32
|
2019-08-16 21:08:40 +00:00
|
|
|
b9/copy-to-ECX 4/imm32/no-index
|
|
|
|
|
ba/copy-to-EDX 0/imm32/.scale
|
|
|
|
|
bb/copy-to-EBX 0/imm32/disp
|
2019-08-23 20:32:24 +00:00
|
|
|
# if (*word->start == '(') goto next check
|
2019-08-23 21:23:25 +00:00
|
|
|
8b/copy 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # copy *ESI to EAX
|
|
|
|
|
8a/copy-byte 0/mod/indirect 0/rm32/EAX . . . 0/r32/AL . . # copy byte at *EAX to AL
|
|
|
|
|
81 4/subop/and 3/mod/direct 0/rm32/EAX . . . . . 0xff/imm32 # bitwise and of EAX
|
|
|
|
|
3d/compare-EAX-and 0x28/imm32/open-paren
|
2019-08-23 20:32:24 +00:00
|
|
|
74/jump-if-equal $parse-effective-address:compound-expression/disp8
|
|
|
|
|
$parse-effective-address:simple-register:
|
|
|
|
|
# base = get-slice(Registers, word, row-size=8)
|
|
|
|
|
# . EAX = get-slice(Registers, word, row-size=8)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "Registers"/imm32
|
|
|
|
|
68/push 8/imm32/row-size
|
|
|
|
|
56/push-ESI
|
|
|
|
|
68/push Registers/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call get-slice/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP
|
|
|
|
|
# . base = *EAX
|
2019-08-23 21:23:25 +00:00
|
|
|
8b/copy 0/mod/indirect 0/rm32/EAX . . . 7/r32/EDI . . # copy *EAX to EDI
|
2019-08-23 20:32:24 +00:00
|
|
|
# return
|
|
|
|
|
eb/jump $parse-effective-address:end/disp8
|
|
|
|
|
$parse-effective-address:compound-expression:
|
2019-08-23 22:00:31 +00:00
|
|
|
# ++word->start to skip '('
|
|
|
|
|
ff 0/subop/increment 0/mod/indirect 6/rm32/ESI . . . . . . # increment *ESI
|
2019-08-23 22:33:13 +00:00
|
|
|
# skip whitespace
|
|
|
|
|
# read register into base
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# if (*word->start == ')') goto end
|
|
|
|
|
# if (*word->start != '+') goto error2
|
|
|
|
|
# ++word->start
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# read register into index
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# if (*word->start == ')') goto end
|
|
|
|
|
# if (*word->start == '<') {
|
|
|
|
|
# ++word->start to skip '<'
|
|
|
|
|
# if (*word->start != '<') goto error3
|
|
|
|
|
# ++word->start to skip '<'
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# read register into scale
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# if (*word->start == ')') goto end
|
|
|
|
|
# }
|
|
|
|
|
# if (*word->start != '+') goto error4
|
|
|
|
|
# ++word->start to skip '+'
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# read register into disp
|
|
|
|
|
# skip whitespace
|
|
|
|
|
# if (*word->start != ')') goto error5
|
2019-08-16 21:08:40 +00:00
|
|
|
$parse-effective-address:end:
|
2019-08-23 21:23:25 +00:00
|
|
|
# return base in EAX
|
|
|
|
|
89/copy 3/mod/direct 0/rm32/EAX . . . 7/r32/EDI . . # copy EDI to EAX
|
2019-08-16 21:08:40 +00:00
|
|
|
# . restore registers
|
2019-08-23 21:23:25 +00:00
|
|
|
5f/pop-to-EDI
|
2019-08-16 21:08:40 +00:00
|
|
|
5e/pop-to-ESI
|
|
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
2019-08-23 20:32:24 +00:00
|
|
|
test-parse-effective-address-simple:
|
|
|
|
|
# . prolog
|
|
|
|
|
55/push-EBP
|
|
|
|
|
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
|
|
|
|
# var slice/ECX = "*esi"
|
|
|
|
|
b8/copy-to-EAX "*esi"/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
|
|
|
|
|
# . ECX = {EAX, ECX}
|
|
|
|
|
51/push-ECX
|
|
|
|
|
50/push-EAX
|
|
|
|
|
89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX
|
|
|
|
|
# EAX, ECX, EDX, EBX = parse-effective-address(slice)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call parse-effective-address/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
|
|
|
|
# slice clobbered beyond this point
|
|
|
|
|
# check-ints-equal(EAX, 6, msg)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-parse-effective-address-simple/base"/imm32
|
|
|
|
|
68/push 6/imm32/ESI
|
|
|
|
|
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(ECX, 4, msg)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-parse-effective-address-simple/index"/imm32
|
|
|
|
|
68/push 4/imm32/none
|
|
|
|
|
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
|
|
|
|
|
# check-ints-equal(EDX, 0, msg)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-parse-effective-address-simple/scale"/imm32
|
|
|
|
|
68/push 0/imm32/none
|
|
|
|
|
52/push-EDX
|
|
|
|
|
# . . 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(EBX, 0, msg)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-parse-effective-address-simple/displacement"/imm32
|
|
|
|
|
68/push 0/imm32/none
|
|
|
|
|
53/push-EBX
|
|
|
|
|
# . . 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
|
|
|
|
|
|
2019-08-16 21:08:40 +00:00
|
|
|
# Code generation:
|
|
|
|
|
# if index is none and disp is 0, then mod = 0 and rm32 = base
|
|
|
|
|
# if index is none, then mod = 2 and rm32 = base and disp32 = disp
|
|
|
|
|
# if index is not none, then mod = 2 and rm32 = 4 and base = base and index = index and disp32 = disp
|
2019-08-16 21:09:56 +00:00
|
|
|
emit-indirect-mode: # word : (address slice), out : (address buffered-file)
|
2019-08-16 07:34:27 +00:00
|
|
|
# . prolog
|
|
|
|
|
55/push-EBP
|
|
|
|
|
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
|
|
|
|
# . save registers
|
|
|
|
|
50/push-EAX
|
|
|
|
|
# ++word->start
|
|
|
|
|
# . EAX = word
|
|
|
|
|
8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 8/disp8 . # copy *(EBP+8) to EAX
|
|
|
|
|
# . ++(*EAX)
|
|
|
|
|
ff 0/subop/increment 0/mod/indirect 0/rm32/EAX . . . . . . # increment *EAX
|
|
|
|
|
# reg-num/EAX = get-slice(Registers, word, row-size=8)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "Registers"/imm32
|
|
|
|
|
68/push 8/imm32/row-size
|
|
|
|
|
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8)
|
|
|
|
|
68/push Registers/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call get-slice/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP
|
|
|
|
|
# write-buffered(out, "0/mod/indirect ")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "0/mod/indirect "/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-buffered(out, *EAX)
|
|
|
|
|
# . . push args
|
|
|
|
|
ff 6/subop/push 0/mod/indirect 0/rm32/EAX . . . . . . # push *EAX
|
|
|
|
|
ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12)
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call print-int32-buffered/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# write-buffered(out, "/rm32")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "/rm32"/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
|
|
|
|
|
$emit-indirect-mode:end:
|
|
|
|
|
# . restore registers
|
|
|
|
|
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-indirect-mode:
|
|
|
|
|
# . 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 = "*eax"
|
|
|
|
|
b8/copy-to-EAX "*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
|
|
|
|
|
# . 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-indirect-mode(str, _test-output-buffered-file)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push _test-output-buffered-file/imm32
|
|
|
|
|
51/push-ECX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call emit-indirect-mode/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/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, "^")
|
|
|
|
|
#? # . . push args
|
|
|
|
|
#? 68/push "^"/imm32
|
|
|
|
|
#? 68/push 2/imm32/stderr
|
|
|
|
|
#? # . . call
|
|
|
|
|
#? e8/call write/disp32
|
|
|
|
|
#? # . . discard args
|
|
|
|
|
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
#? # . write-stream(2/stderr, _test-output-stream)
|
|
|
|
|
#? # . . push args
|
|
|
|
|
#? 68/push _test-output-stream/imm32
|
|
|
|
|
#? 68/push 2/imm32/stderr
|
|
|
|
|
#? # . . call
|
|
|
|
|
#? e8/call write-stream/disp32
|
|
|
|
|
#? # . . discard args
|
|
|
|
|
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
#? # . write(2/stderr, "$\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/mod/indirect 0/rm32", msg)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-emit-indirect-mode/0"/imm32
|
|
|
|
|
68/push "0/mod/indirect 0x00000000/rm32"/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-indirect-mode-2:
|
|
|
|
|
# . 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 = "*edi"
|
|
|
|
|
b8/copy-to-EAX "*edi"/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
|
|
|
|
|
# . 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-indirect-mode(str/ECX, _test-output-buffered-file)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push _test-output-buffered-file/imm32
|
|
|
|
|
51/push-ECX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call emit-indirect-mode/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/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, "^")
|
|
|
|
|
#? # . . push args
|
|
|
|
|
#? 68/push "^"/imm32
|
|
|
|
|
#? 68/push 2/imm32/stderr
|
|
|
|
|
#? # . . call
|
|
|
|
|
#? e8/call write/disp32
|
|
|
|
|
#? # . . discard args
|
|
|
|
|
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
#? # . write-stream(2/stderr, _test-output-stream)
|
|
|
|
|
#? # . . push args
|
|
|
|
|
#? 68/push _test-output-stream/imm32
|
|
|
|
|
#? 68/push 2/imm32/stderr
|
|
|
|
|
#? # . . call
|
|
|
|
|
#? e8/call write-stream/disp32
|
|
|
|
|
#? # . . discard args
|
|
|
|
|
#? 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
#? # . write(2/stderr, "$\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/mod/indirect 7/rm32", msg)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-emit-indirect-mode/1"/imm32
|
|
|
|
|
68/push "0/mod/indirect 0x00000007/rm32"/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
|
|
|
|
|
|
2019-08-23 08:27:36 +00:00
|
|
|
# update line->read to ')'
|
|
|
|
|
# line->read ends at ')'
|
2019-08-22 07:25:41 +00:00
|
|
|
skip-until-close-paren: # line : (address stream)
|
|
|
|
|
# . 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
|
|
|
|
|
# ECX = line
|
|
|
|
|
8b/copy 1/mod/*+disp8 5/rm32/EBP . . 1/r32/ECX 8/disp8 . # copy *(EBP+8) to ECX
|
|
|
|
|
# EAX = skip-until-close-paren-in-slice(&line->data[line->read], &line->data[line->write])
|
|
|
|
|
# . . push &line->data[line->write]
|
|
|
|
|
8b/copy 1/mod/*+disp8 1/rm32/ECX . . 2/r32/EDX 8/disp8 . # copy *(ECX+8) to EDX
|
|
|
|
|
8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX 0xc/disp8 . # copy ECX+EDX+12 to EDX
|
|
|
|
|
52/push-EDX
|
|
|
|
|
# . . push &line->data[line->read]
|
|
|
|
|
8b/copy 1/mod/*+disp8 1/rm32/ECX . . 2/r32/EDX 4/disp8 . # copy *(ECX+4) to EDX
|
|
|
|
|
8d/copy-address 1/mod/*+disp8 4/rm32/sib 1/base/ECX 2/index/EDX . 2/r32/EDX 0xc/disp8 . # copy ECX+EDX+12 to EDX
|
|
|
|
|
52/push-EDX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call skip-until-close-paren-in-slice/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
|
|
|
|
# line->read = EAX - line->data
|
|
|
|
|
29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX
|
|
|
|
|
2d/subtract-from-EAX 0xc/imm32
|
|
|
|
|
89/copy 1/mod/*+disp8 1/rm32/ECX . . 0/r32/EAX 4/disp8 . # copy EAX to *(ECX+4)
|
|
|
|
|
$skip-until-close-paren:end:
|
|
|
|
|
# . restore registers
|
|
|
|
|
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-skip-until-close-paren:
|
|
|
|
|
# . 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
|
|
|
|
|
# . write(_test-input-stream, "*(abc) def")
|
|
|
|
|
# . indices: 0123 45
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "*(abc) def"/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
|
|
|
|
|
# precondition: line->read == 0
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-skip-until-close-paren/precondition"/imm32
|
|
|
|
|
68/push 0/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
|
|
|
|
|
# skip-until-close-paren(_test-input-stream)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push _test-input-stream/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call skip-until-close-paren/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
2019-08-23 08:27:36 +00:00
|
|
|
# check-ints-equal(line->read, 5, msg)
|
2019-08-22 07:25:41 +00:00
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-skip-until-close-paren"/imm32
|
2019-08-23 08:27:36 +00:00
|
|
|
68/push 5/imm32
|
2019-08-22 07:25:41 +00:00
|
|
|
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
|
|
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
|
|
|
|
test-skip-until-close-paren-ignores-spaces:
|
|
|
|
|
# . 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
|
|
|
|
|
# . write(_test-input-stream, "*(a b)/yz")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "*(a b)/yz"/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
|
|
|
|
|
# precondition: line->read == 0
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-skip-until-close-paren-ignores-spaces/precondition"/imm32
|
|
|
|
|
68/push 0/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
|
|
|
|
|
# skip-until-close-paren(_test-input-stream)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push _test-input-stream/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call skip-until-close-paren/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
2019-08-23 08:27:36 +00:00
|
|
|
# check-ints-equal(line->read, 5, msg)
|
2019-08-22 07:25:41 +00:00
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-skip-until-close-paren-ignores-spaces"/imm32
|
2019-08-23 08:27:36 +00:00
|
|
|
68/push 5/imm32
|
2019-08-22 07:25:41 +00:00
|
|
|
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
|
|
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
|
|
|
|
test-skip-until-close-paren-works-from-mid-stream:
|
|
|
|
|
# . 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
|
|
|
|
|
# . write(_test-input-stream, "0 *(a b)/yz")
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "0 *(a b)/yz"/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
|
|
|
|
|
# precondition: _test-input-stream->read == 2
|
|
|
|
|
c7 0/subop/copy 1/mod/*+disp8 0/rm32/EAX . . . . 4/disp8 2/imm32 # copy to *(EAX+4)
|
|
|
|
|
# skip-until-close-paren(_test-input-stream)
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push _test-input-stream/imm32
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call skip-until-close-paren/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP
|
2019-08-23 08:27:36 +00:00
|
|
|
# check-ints-equal(_test-input-stream->read, 7, msg)
|
2019-08-22 07:25:41 +00:00
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-skip-until-close-paren-works-from-mid-stream"/imm32
|
2019-08-23 08:27:36 +00:00
|
|
|
68/push 7/imm32
|
2019-08-22 07:25:41 +00:00
|
|
|
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
|
|
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
|
|
|
|
skip-until-close-paren-in-slice: # curr : (address byte), end : (address byte) -> new_curr/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
|
|
|
|
|
# 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
|
|
|
|
|
# EAX = 0
|
|
|
|
|
31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX
|
|
|
|
|
# skip initial dquote
|
|
|
|
|
41/increment-ECX
|
|
|
|
|
$skip-until-close-paren-in-slice:loop:
|
2019-08-23 08:27:36 +00:00
|
|
|
# if (curr >= end) break
|
2019-08-22 07:25:41 +00:00
|
|
|
39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX
|
2019-08-23 08:27:36 +00:00
|
|
|
73/jump-if-greater-unsigned-or-equal $skip-until-close-paren-in-slice:break/disp8
|
2019-08-22 07:25:41 +00:00
|
|
|
# AL = *curr
|
|
|
|
|
8a/copy-byte 0/mod/indirect 1/rm32/ECX . . . 0/r32/AL . . # copy byte at *ECX to AL
|
|
|
|
|
$skip-until-close-paren-in-slice:check-close:
|
|
|
|
|
# if (EAX == ')') break
|
|
|
|
|
3d/compare-EAX-and 0x29/imm32/close-paren
|
|
|
|
|
74/jump-if-equal $skip-until-close-paren-in-slice:break/disp8
|
|
|
|
|
# ++curr
|
|
|
|
|
41/increment-ECX
|
|
|
|
|
eb/jump $skip-until-close-paren-in-slice:loop/disp8
|
|
|
|
|
$skip-until-close-paren-in-slice:break:
|
|
|
|
|
# return curr
|
|
|
|
|
89/copy 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # copy ECX to EAX
|
|
|
|
|
$skip-until-close-paren-in-slice:end:
|
|
|
|
|
# . restore registers
|
|
|
|
|
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-skip-until-close-paren-in-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 = skip-until-close-paren-in-slice(EAX, ECX)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
50/push-EAX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call skip-until-close-paren-in-slice/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
2019-08-23 08:27:36 +00:00
|
|
|
# check-ints-equal(ECX-EAX, 5, msg) # EAX is at the ')'
|
2019-08-22 07:25:41 +00:00
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-skip-until-close-paren-in-slice"/imm32
|
2019-08-23 08:27:36 +00:00
|
|
|
68/push 5/imm32
|
2019-08-22 07:25:41 +00:00
|
|
|
# . . 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
|
|
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
|
|
|
|
test-skip-until-close-paren-in-slice-ignores-spaces:
|
|
|
|
|
# . prolog
|
|
|
|
|
55/push-EBP
|
|
|
|
|
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
|
|
|
|
# setup: (EAX..ECX) = "*(a b)/yz"
|
|
|
|
|
b8/copy-to-EAX "*(a b)/yz"/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-until-close-paren-in-slice(EAX, ECX)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
50/push-EAX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call skip-until-close-paren-in-slice/disp32
|
|
|
|
|
# . . discard args
|
|
|
|
|
81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP
|
2019-08-23 08:27:36 +00:00
|
|
|
# check-ints-equal(ECX-EAX, 4, msg) # EAX is at the ')'
|
2019-08-22 07:25:41 +00:00
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-skip-until-close-paren-in-slice-ignores-spaces"/imm32
|
2019-08-23 08:27:36 +00:00
|
|
|
68/push 4/imm32
|
2019-08-22 07:25:41 +00:00
|
|
|
# . . 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
|
|
|
|
|
# . epilog
|
|
|
|
|
89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP
|
|
|
|
|
5d/pop-to-EBP
|
|
|
|
|
c3/return
|
|
|
|
|
|
|
|
|
|
test-skip-until-close-paren-in-slice-stops-at-end:
|
|
|
|
|
# . prolog
|
|
|
|
|
55/push-EBP
|
|
|
|
|
89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP
|
|
|
|
|
# setup: (EAX..ECX) = "*(abc" # unbalanced dquote
|
|
|
|
|
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
|
|
|
|
|
# EAX = skip-until-close-paren-in-slice(EAX, ECX)
|
|
|
|
|
# . . push args
|
|
|
|
|
51/push-ECX
|
|
|
|
|
50/push-EAX
|
|
|
|
|
# . . call
|
|
|
|
|
e8/call skip-until-close-paren-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, 0, msg) # skipped to end of slice
|
|
|
|
|
# . . push args
|
|
|
|
|
68/push "F - test-skip-until-close-paren-in-slice-stops-at-end"/imm32
|
|
|
|
|
68/push 0/imm32
|
|
|
|
|
# . . push ECX-EAX
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29/subtract 3/mod/direct 1/rm32/ECX . . . 0/r32/EAX . . # subtract EAX from ECX
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51/push-ECX
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# . . call
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e8/call check-ints-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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# . epilog
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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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2019-08-01 21:50:19 +00:00
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== data
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Registers: # (table string int)
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# a table is a stream
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0x40/imm32/write
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0/imm32/read
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0x40/imm32/length
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# data
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"eax"/imm32 0/imm32
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"ecx"/imm32 1/imm32
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"edx"/imm32 2/imm32
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"ebx"/imm32 3/imm32
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"esp"/imm32 4/imm32
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"ebp"/imm32 5/imm32
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"esi"/imm32 6/imm32
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"edi"/imm32 7/imm32
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# . . vim:nowrap:textwidth=0
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