# Generate code for a new function called 'run-tests' which calls in sequence # all functions starting with 'test-'. == code # instruction effective address register displacement immediate # . op subop mod rm32 base index scale r32 # . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes Entry: # Heap = new-segment(Heap-size) # . . push args 68/push Heap/imm32 68/push Heap-size/imm32 # . . call e8/call new-segment/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # initialize-trace-stream(256KB) # . . push args 68/push 0x40000/imm32/256KB # . . call e8/call initialize-trace-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # run tests if necessary, convert stdin if not # . prolog 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # initialize heap # - if argc > 1 and argv[1] == "test", then return run_tests() # . argc > 1 81 7/subop/compare 1/mod/*+disp8 5/rm32/EBP . . . . 0/disp8 1/imm32 # compare *EBP 7e/jump-if-lesser-or-equal $run-main/disp8 # . argv[1] == "test" # . . push args 68/push "test"/imm32 ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call kernel-string-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . check result 3d/compare-EAX-and 1/imm32 75/jump-if-not-equal $run-main/disp8 # . run-tests() e8/call run-tests/disp32 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/EBX Num-test-failures/disp32 # copy *Num-test-failures to EBX eb/jump $main:end/disp8 $run-main: # - otherwise convert stdin # convert(Stdin, Stdout) # . . push args 68/push Stdout/imm32 68/push Stdin/imm32 # . . call e8/call convert/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . syscall(exit, 0) bb/copy-to-EBX 0/imm32 $main:end: b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 convert: # in : (address buffered-file), out : (address buffered-file) -> # pseudocode # bool tests-found = false # var line = new-stream(512, 1) # var new-code-segment = new-stream(Segment-size, 1) # write(new-code-segment, "\n==code\n") # write(new-code-segment, "run-tests:\n") # while true # clear-stream(line) # read-line-buffered(in, line) # if (line->write == 0) break # end of file # var word-slice = next-word(line) # if is-label?(word-slice) # if slice-starts-with?(word-slice, "test-") # tests-found = true # write(new-code-segment, " e8/call ") # write-slice(new-code-segment, word-slice) # write(new-code-segment, "/disp32\n") # rewind-stream(line) # write-stream-data(out, line) # if tests-found # write(new-code-segment, " c3/return\n") # write-stream-data(out, new-code-segment) # flush(out) # # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # . save registers 50/push-EAX 51/push-ECX 52/push-EDX 53/push-EBX 57/push-EDI # var line/ECX : (address stream byte) = stream(512) 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x200/imm32 # subtract from ESP 68/push 0x200/imm32/length 68/push 0/imm32/read 68/push 0/imm32/write 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX # var word-slice/EDX = {0, 0} 68/push 0/imm32/end 68/push 0/imm32/start 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX # tests-found?/EBX = false 31/xor 3/mod/direct 3/rm32/EBX . . . 3/r32/EBX . . # clear EBX # new-code-segment/EDI = new-stream(Heap, Segment-size, 1) # . EAX = new-stream(Heap, Segment-size, 1) # . . push args 68/push 1/imm32 ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Segment-size/disp32 # push *Segment-size 68/push Heap/imm32 # . . call e8/call new-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP # . EDI = EAX 89/copy 3/mod/direct 7/rm32/EDI . . . 0/r32/EAX . . # copy EAX to EDI # write(new-code-segment, "\n== code\n") # . . push args 68/push "\n== code\n"/imm32 57/push-EDI # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write(new-code-segment, "run-tests:\n") # . . push args 68/push "run-tests:\n"/imm32 57/push-EDI # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $convert:loop: # clear-stream(line) # . . push args 51/push-ECX # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # read-line-buffered(in, line) # . . push args 51/push-ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) # . . call e8/call read-line-buffered/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $convert:check0: # if (line->write == 0) break 81 7/subop/compare 0/mod/indirect 1/rm32/ECX . . . . . 0/imm32 # compare *ECX 0f 84/jump-if-equal $convert:break/disp32 # next-word(line, word-slice) # . . push args 52/push-EDX 51/push-ECX # . . call e8/call next-word/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $convert:check-for-label: # if (!is-label?(word-slice)) continue # . EAX = is-label?(word-slice) # . . push args 52/push-EDX # . . call e8/call is-label?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # . if (EAX == 0) continue 3d/compare-EAX-and 0/imm32 74/jump-if-equal $convert:continue/disp8 $convert:check-label-prefix: # strip trailing ':' from word-slice ff 1/subop/decrement 1/mod/*+disp8 2/rm32/EDX . . . . 4/disp8 . # decrement *(EDX+4) # if !slice-starts-with?(word-slice, "test-") continue # . . push args 68/push "test-"/imm32 52/push-EDX # . . call e8/call slice-starts-with?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . if (EAX == 0) break 3d/compare-EAX-and 0/imm32 74/jump-if-equal $convert:continue/disp8 $convert:call-test-function: # tests-found? = true bb/copy-to-EBX 1/imm32/true # write(new-code-segment, " e8/call ") # . . push args 68/push " e8/call "/imm32 57/push-EDI # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write-slice(new-code-segment, word-slice) # . . push args 52/push-EDX 57/push-EDI # . . call e8/call write-slice/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write(new-code-segment, "/disp32\n") # . . push args 68/push "/disp32\n"/imm32 57/push-EDI # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $convert:continue: # rewind-stream(line) # . . push args 51/push-ECX # . . call e8/call rewind-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # write-stream-data(out, line) # . . push args 51/push-ECX ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call write-stream-data/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # loop e9/jump $convert:loop/disp32 $convert:break: # if (!tests-found?) goto end 81 7/subop/compare 3/mod/direct 3/rm32/EBX . . . . . 0/imm32 # compare EBX 74/jump-if-equal $convert:end/disp8 # write(new-code-segment, " c3/return\n") # . . push args 68/push " c3/return\n"/imm32 57/push-EDI # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write-stream-data(out, new-code-segment) # . . push args 57/push-EDI ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) # . . call e8/call write-stream-data/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP $convert:end: # 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 # . reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x214/imm32 # add to ESP # . restore registers 5f/pop-to-EDI 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 # . . vim:nowrap:textwidth=0