ChickenVM (jszurich)

Transcript

1. ChickenVM
2. @igorwesome
3. not about chicken scheme
4. drinking game
5. why did the chicken cross the road?
6. what came first, the chicken or the egg?
7. does the chicken of all chickens that don’t contain themselves contain itself?
8. Chicken Chicken Chicken: Chicken Chicken Doug Zongker University of Washington Chicken Chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken. Chicken chicken chicken chicken chicken chicken chicken chicken. Chicken, chicken chicken chicken, chicken chicken, chic- ken chicken chicken “chicken chicken” chicken “chicken chicken” chicken. Chicken, chicken chicken chicken chicken chicken chi- cken (chicken chicken) chicken chicken chicken chicken chicken, chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken. Chicken chicken chicken chicken chicken chicken chicken chicken chicken, chicken chicken chicken, chicken chicken chicken chicken chicken chicken chicken. CC Chickens: C.3.2 [Chickens]: Chicken Chickens—chicken/chicken chicken; C.3.4 [Chicken chicken]: Chicken chicken chicken—chickens; C.2.4 [Chicken-chicken chickens]: Chicken/Chicken, chicken chickens Chickens: chicken, chicken chicken, chicken, chicken 1 Chicken Chicken chicken, chicken, chicken chicken chicken chicken, chic- ken chicken chicken chicken chicken chicken [4]. Chicken chicken chicken chicken, chicken chicken chicken: chicken chicken chic- ken chicken chicken chicken chicken chicken chicken. (chicken chicken chicken chicken chicken chicken, chicken chicken chicken chicken chicken chicken chicken!) Chicken, chicken-chicken chicken chicken—chicken chicken, chi- cken chicken 95% chicken chicken-chicken chicken, chicken chic- ken chicken chicken—chicken chicken chicken chicken. Chicken, chicken chicken, chicken chicken chicken 1987. Chicken chicken chicken chicken chicken chicken-chicken-chicken chicken chicken chicken chicken chicken chicken, chicken chicken chicken chicken chicken chicken chicken. Chicken chicken, chicken chicken ch- icken chicken chicken chicken chicken (chicken chicken chicken chicken chicken, chicken chicken chicken chicken chicken chicken chicken chicken). Chicken chicken chicken chicken chicken chicken, chicken chicken (chicken chicken chicken chicken chicken chicken) chicken chic- ken chickens chicken. Chicken chickens chicken chicken chicken chicken chicken “chicken” chicken chickens chicken. Chicken ch- icken, chicken-chicken chicken chickens, chicken chicken chicken chicken chicken chicken chicken.1 Chicken chicken’s “chicken” chicken chicken chicken chicken—chicken chicken chicken chic- ken chicken chicken, chicken chicken chicken chicken chicken ch- icken. 1Chicken chicken chicken chicken chicken chicken chicken; chicken chickens. Chicken chicken Chicken [5]. + Chicken? Chicken Chicken Chicken Chicken Chicken, chicken, chicken Chicken Chicken Chicken Chicken/chicken chicken Chicken chicken chicken C C Chicken chicke n chicken chicken Chicken 1 Chicken chicken chicken. Chicken chicken, chicken chicken (chic- ken chicken chicken) chicken chicken-chicken. Chicken chicken chicken chicken chicken. Chicken-chicken chic- ken chicken chicken chicken chicken chicken, chicken chicken chi- cken chicken, chicken, chicken chicken chicken “chicken” chicken. Chicken chicken chicken chicken chicken chicken chicken, chic- ken, chicken chicken. Chicken chicken, chicken chicken chicken chicken chicken, chicken chicken chicken chicken chicken chicken (chicken, chicken-chicken chicken chicken chicken-chicken chic- ken chicken-chicken chicken). Chicken, chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken. Chicken chicken chicken chicken chicken chicken, chicken chic- ken chicken chicken chicken chicken chicken chicken chicken (ch- icken). Chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken, chicken chicken chicken, chicken, chicken chicken chicken chicken. Chicken chicken chicken, chicken chicken chicken, chicken chic- ken chickens chicken chicken chicken chicken. Chicken, chicken chicken chicken chicken chicken chicken chicken-chicken chicken, chicken chicken chickens Chicken 2. Chicken chicken chicken ch- icken chicken chicken chicken chicken chicken, chicken chicken chicken, chicken chickens chicken. Chicken chicken chicken chic- ken chicken chicken chicken chicken (chicken chicken Chicken 3), chicken chickens chicken chicken chicken (Chicken 4). Chicken chicken chicken chicken chicken, chicken chicken chickens chic- ken, chicken chicken chickens chickens chicken. Chicken chicken chicken chicken chicken chicken chicken. 2 Chicken chicken Chicken chicken chicken, C(n) chicken chicken chicken chicken chicken chicken chicken [4]. Chicken chicken chicken chicken ch- icken’s chickens Chicken [3] chicken chicken, chicken chicken ch-
10. chicken.js
11. JavaScript is the assembly of the web
12. function chicken(CHICKEN, Chicken) { Chicken &&( chicken. chicken =[, CHICKEN, CHICKEN = Chicken = chicken. $Chicken =-( CHICKEN ==( chicken. Chicken = Chicken ))], chicken. chicken [Chicken++] = chicken. chicken, chicken. CHICKEN = ++Chicken, chicken (--Chicken), chicken. $Chicken = ++Chicken, chicken. CHICKEN++ ); Chicken = chicken. Chicken [chicken. $Chicken++ ]; chicken. Chicken = CHICKEN? Chicken? '\012'== Chicken? chicken (++ CHICKEN, chicken. chicken [++ chicken. CHICKEN ]= CHICKEN - CHICKEN ): Chicken ==' '|'\015'== Chicken || (Chicken )== "c" & chicken. Chicken [chicken. $Chicken++ ]== "h" & chicken. Chicken [chicken. $Chicken++ ]== "i" & chicken. Chicken [chicken. $Chicken++ ]== "c" & chicken. Chicken [chicken. $Chicken++ ]== "k" & chicken. Chicken [chicken. $Chicken++ ]== "e" & chicken. Chicken [chicken. $Chicken++ ]== "n"&&++chicken. chicken [chicken. CHICKEN]? chicken (CHICKEN) :[ "Error on line "+CHICKEN+": expected 'chicken'", chicken. CHICKEN = CHICKEN ++- CHICKEN ]: chicken. chicken :( CHICKEN = chicken. Chicken[chicken.CHICKEN], Chicken? (Chicken = } --Chicken? --Chicken? --Chicken? --Chicken? --Chicken? --Chicken? --Chicken? --Chicken? --Chicken? chicken. CHICKEN++ && --Chicken :'&#'+CHICKEN+';': chicken. Chicken [chicken. Chicken [-- chicken. CHICKEN ]&& (chicken. $Chicken += CHICKEN), --chicken. CHICKEN ]: chicken. Chicken [chicken. Chicken [CHICKEN] = chicken. Chicken [-- chicken. CHICKEN ],-- chicken. CHICKEN ]: chicken. Chicken [chicken. Chicken [chicken. $Chicken++ ]] [CHICKEN]: CHICKEN == chicken. Chicken [-- chicken. CHICKEN ]: CHICKEN*chicken. Chicken [-- chicken. CHICKEN ]: chicken. Chicken [-- chicken. CHICKEN ]- CHICKEN: chicken. Chicken [-- chicken. CHICKEN ]+ CHICKEN: chicken. CHICKEN ++ && "chicken", chicken. Chicken [chicken. CHICKEN ]= Chicken, chicken ()): CHICKEN ); return chicken. Chicken
13. 50 LOC
14. cat chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊
15. quine chicken
16. Spec Every line in the program is inspected for chickens, and the corresponding number of chickens are pushed onto the stack. Execution is done directly on the stack, which may make the program susceptible to arbitrary chicken injection attacks.
17. 0 axe Terminates all chickens. 1 chicken Pushes “chicken” onto the stack. 2 add Adds two topmost groups of chickens. 3 fox Topmost chickens become foxes. Subtract. 4 rooster Causes two topmost groups to multiply. 4.5 fence Divides chickens. Cannot be used. 5 compare Compares, pushes truthy or falsy chicken. 6 pick Pop address, pop source. 0 stack, 1 input. 7 peck Pop address, store value. 8 fr Pop offset, pop cond. If cond, fly to offset. 9 BBQ Chars the topmost group into ASCII. n Pushes n-10 chickens onto the stack.
18. disassembling the chicken
19. • Same variables with different case or prefix • Long chains of conditional evaluation • Increment, decrement, parentheses, commas, ternaries • Variable re-definition • Store values on the function object • Recursion
20. function chicken(CHICKEN, Chicken) { Chicken && (chicken.chicken = [, CHICKEN, CHICKEN = Chicken = chicken.$Chicken = -(CHICKEN == (chicken.Chicken = Chicken)) ], chicken.chicken[Chicken++] = chicken.chicken, chicken.CHICKEN = ++Chicken, chicken(--Chicken), chicken. $Chicken = ++Chicken, chicken.CHICKEN++); Chicken = chicken.Chicken[chicken.$Chicken++]; chicken.Chicken = CHICKEN ? Chicken ? '\012' == Chicken ? chicken(++CHICKEN, chicken.chicken[++chicken.CHICKEN] = CHICKEN - CHICKEN) : Chicken == ' ' | '\015' == Chicken || (Chicken) == "c" & chicken.Chicken[chicken.$Chicken++] == "h" & chicken.Chicken[chicken.$Chicken++] == "i" & chicken.Chicken[chicken.$Chicken++] == "c" & chicken.Chicken[chicken.$Chicken++] == "k" & chicken.Chicken[chicken.$Chicken++] == "e" & chicken.Chicken[chicken.$Chicken++] == "n" && + +chicken.chicken[chicken.CHICKEN] ? chicken(CHICKEN) : ["Error on line " + CHICKEN + ": expected 'chicken'", chicken.CHICKEN = CHICKEN++-CHICKEN ] : chicken.chicken : (CHICKEN = chicken.Chicken[chicken.CHICKEN], Chicken ? (Chicken = --Chicken ? --Chicken ? --Chicken ? --Chicken ? --Chicken ? --Chicken ? --Chicken ? --Chicken ? --Chicken ? chicken.CHICKEN++ && --Chicken : '&#' + CHICKEN + ';' : chicken.Chicken[chicken.Chicken[--chicken.CHICKEN] && (chicken.$Chicken += CHICKEN), --chicken.CHICKEN] : chicken.Chicken[chicken.Chicken[CHICKEN] = chicken.Chicken[--chicken.CHICKEN], --chicken.CHICKEN] : chicken.Chicken[chicken.Chicken[chicken.$Chicken++]][CHICKEN] : CHICKEN == chicken.Chicken[-- chicken.CHICKEN] : CHICKEN * chicken.Chicken[--chicken.CHICKEN] : chicken.Chicken[--chicken.CHICKEN] - CHICKEN : chicken.Chicken[--chicken.CHICKEN] + CHICKEN : chicken.CHICKEN++ && "chicken", chicken.Chicken[chicken.CHICKEN] = Chicken, chicken()) : CHICKEN); return chicken.Chicken }
21. function chicken(CHICKEN, Chicken)
22. function chicken(code, input)
23. function chicken(code, input) { if (input) { chicken.chicken = [ , code, code = input = chicken.$Chicken = -(code == (chicken.Chicken = input)) ]; chicken.chicken[input++] = chicken.chicken; chicken.CHICKEN = ++input; chicken(--input); chicken.$Chicken = ++input; chicken.CHICKEN++; }
24. • Restructure • Step through debugger • Stare until eyes fall out • Rename variable • Rinse, repeat... Strategy
25. readable version
26. var code = "", stack = [], $sp = -1, $ip = 0, $cp = 0; function inc() { stack[$sp]++; return true; } function push(value) { stack[++$sp] = value; } function pop() { return stack[$sp--]; } function peek() { return stack[$sp]; }
27. function chicken(input, le_code) { code = le_code; $cp = 0; $sp = -1; stack = []; push(stack); push(input); push(0); read_line(1); return run_loop(); }
28. function read_line(line) { var character = code[$cp++]; if (!character) { return; } if ('\012' == character) { // LF line++; push(0); return read_line(line); } if (character == ' ' || (character == "c" && code[$cp++] == "h" && code[$cp++] == "i" && code[$cp++] == "c" && code[$cp++] == "k" && code[$cp++] == "e" && code[$cp++] == "n") && inc()) { return read_line(line); } $sp = 0; stack = [ 0x0, "Error on line "+line+": expected 'chicken'" ]; }
29. function run_loop() { var instruction; $ip = 2; push(0); while (instruction = stack[$ip++]) { process_instruction(instruction); } return peek(); }
30. function process_instruction(instruction) { var head; switch (instruction) { case 1: push("chicken"); break; case 2: head = pop(); push(pop() + head); break; case 3: head = pop(); push(pop() - head); break; case 4: push(pop() * pop()); break; case 5: push(pop() == pop()); break; case 6: head = pop(); push(stack[stack[$ip++]][head]); break; case 7: head = pop(); stack[head] = pop(); break; case 8: head = pop(); if (pop()) { $ip += head; } break; case 9: push('&#'+pop()+';'); break; default: push(instruction - 10); break; } }
31. memory init
32. &stack &input 0 ip sp
33. parsing
34. &stack &input 0 ip sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊
35. &stack &input 0 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
36. &stack &input 1 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
37. &stack &input 2 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
38. &stack &input 3 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
39. &stack &input 4 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
40. &stack &input 5 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
41. &stack &input 6 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
42. &stack &input 7 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
43. &stack &input 8 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
44. &stack &input 9 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
45. &stack &input 10 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
46. &stack &input 11 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
47. &stack &input 11 0 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
48. &stack &input 11 1 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
49. &stack &input 11 2 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
50. &stack &input 11 3 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
51. &stack &input 11 4 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
52. &stack &input 11 5 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
53. &stack &input 11 6 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
54. &stack &input 11 6 0 sp chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken ␊ chicken chicken chicken chicken chicken chicken ␊ ip
55. execution
56. &stack &input 11 6 0 sp ip
57. &stack &input 11 6 0 sp set the code pointer to the beginning of the code segment ip
58. &stack &input 11 6 0 0 sp delimit code segment with an exit opcode ip
59. &stack &input 11 6 0 0 sp }addresses instructions stack } } ip
60. &stack &input 11 6 0 0 sp start executing opcodes ip
61. &stack &input 11 6 0 0 sp 11 = push 1 ip
62. &stack &input 11 6 0 0 1 sp push(1) ip
63. &stack &input 11 6 0 0 1 sp 6 = load ip
64. &stack &input 11 6 0 0 1 sp 6, 0 = load stack[0] ip source
65. &stack &input 11 6 0 0 1 sp push(&stack[pop()]) ip source
66. &stack &input 11 6 0 0 1 sp push(&stack[1]) ip
67. &stack &input 11 6 0 0 &input push(&input) ip sp
68. &stack &input 11 6 0 0 &input 0 = exit ip sp
69. &stack &input 11 6 0 0 &input return head of stack to caller which is: &input ip sp
70. &stack &input 1 0 sp what about the quine? ip
71. &stack &input 1 0 sp 1 = chicken ip
72. &stack &input 1 0 “chicken” sp push(“chicken”) ip
73. &stack &input 1 0 “chicken” sp 0 = exit ip
74. &stack &input 1 0 “chicken” sp ip return “chicken”
75. eggsembly
76. push 5 push 13 rooster bbq axe chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken␊ chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken chicken␊ chicken chicken chicken chicken␊ chicken chicken chicken chicken chicken chicken chicken chicken chicken␊ eggsemble
77. push 5 push 13 rooster bbq axe push 5 push 13 multiply char exit chicken asm
78. $ cat 99chickens.cha | chickenasm | eggsemble | chicken
79. written in
80. count
81. &stack &input ... ... ... sp 3
82. &stack &input ... ... ... ip push 0 push 2 store push 0 push 32 char add push 3 store 3 sp
83. &stack &input ... ... ... ip push 0 push 2 store push 0 push 32 char add push 3 store write 0 into register 2 } 3 sp
84. &stack &input 0 ... ... ip push 0 push 2 store push 0 push 32 char add push 3 store i 3 write 0 into register 2 } sp
85. &stack &input 0 ... ... ip push 0 push 2 store push 0 push 32 char add push 3 store write “0<space>” into register 3 } i 3 write 0 into register 2 } sp
86. &stack &input 0 “0 “ ... ip push 0 push 2 store push 0 push 32 char add push 3 store i out 3 write 0 into register 2 } write “0<space>” into register 3 } sp
87. &stack &input 0 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 3 sp
88. &stack &input 0 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } 3 sp
89. &stack &input 0 “0 “ ... 0 sp ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } 3
90. &stack &input 0 “0 “ ... 0 ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 sp
91. &stack &input 0 “0 “ ... 0 3 sp ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3
92. &stack &input 0 “0 “ ... 0 3 ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } sp
93. &stack &input 0 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } false sp
94. &stack &input 0 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } false if true, jump to end } sp
95. &stack &input 0 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } false if true, jump to end } sp
96. &stack &input 0 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } if true, jump to end } sp
97. &stack &input 0 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } if true, jump to end } load register 2 i } sp
98. &stack &input 0 “0 “ ... 0 ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } if true, jump to end } load register 2 i } sp
99. &stack &input 0 “0 “ ... 0 ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } if true, jump to end } load register 2 i } increment } sp
100. &stack &input 0 “0 “ ... 1 ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } if true, jump to end } load register 2 i } increment } sp
101. &stack &input 0 “0 “ ... 1 ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } if true, jump to end } load register 2 i } increment } store register 2 i } sp
102. &stack &input 1 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 load register 2 i } load register 1 input } 3 compare } if true, jump to end } load register 2 i } increment } store register 2 i } sp
103. &stack &input 1 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } sp
104. &stack &input 1 “0 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } append “i<space>” to out } sp
105. &stack &input 1 “0 1 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out sp
106. &stack &input 1 “0 1 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } sp
107. &stack &input 1 “0 1 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } sp
108. &stack &input 1 “0 1 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } sp
109. &stack &input 1 “0 1 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } sp
110. &stack &input 1 “0 1 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } false sp
111. &stack &input 1 “0 1 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } sp
112. &stack &input 2 “0 1 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } sp
113. &stack &input 2 “0 1 2 “ ... ip i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } sp
114. &stack &input 2 “0 1 2 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
115. &stack &input 2 “0 1 2 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
116. &stack &input 2 “0 1 2 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
117. &stack &input 2 “0 1 2 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip false sp
118. &stack &input 2 “0 1 2 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
119. &stack &input 3 “0 1 2 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
120. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
121. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
122. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
123. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
124. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip true sp
125. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
126. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
127. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip sp
128. &stack &input 3 “0 1 2 3 “ ... i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip load out } sp
129. &stack &input 3 “0 1 2 3 “ ... “0 1 2 3 “ i out push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 } 3 compare i to input if true, jump to end } increment i } }append “i<space>” to out jump to start } ip load out } sp
130. &stack &input 3 “0 1 2 3 “ ... “0 1 2 3 “ i out 3 “0 1 2 3 “ is returned to caller sp
131. push 2 load 0 push 1 load 0 compare push 24 jump push 2 load 0 push 1 add push 2 store push 3 load 0 push 2 load 0 add push 32 char add push 3 store push 1 push 0 push 33 subtract jump push 3 load 0 loop break
132. arbitrary chicken injection
133. &stack &input ... ... ip push 11 push 12 push 2 push 0 push 1 push 1 jump sp
134. &stack &input ... ... 11 ip push 11 push 12 push 2 push 0 push 1 push 1 jump sp
135. &stack &input ... ... 11 12 ip push 11 push 12 push 2 push 0 push 1 push 1 jump sp
136. &stack &input ... ... 11 12 2 ip push 11 push 12 push 2 push 0 push 1 push 1 jump sp
137. &stack &input ... ... 11 12 2 0 ip push 11 push 12 push 2 push 0 push 1 push 1 jump sp
138. &stack &input ... ... 11 12 2 0 ip push 11 push 12 push 2 push 0 push 1 push 1 jump sp ip
139. &stack &input ... ... 11 12 2 0 ip push 11 push 12 push 2 push 0 push 1 push 1 jump sp ip
140. &stack &input ... ... 11 12 2 0 ip push(1) sp
141. &stack &input ... ... 11 12 2 0 ip push(1) 1 sp
142. &stack &input ... ... 11 12 2 0 ip push(2) 1 sp
143. &stack &input ... ... 11 12 2 0 ip push(2) 1 2 sp
144. &stack &input ... ... 11 12 2 0 ip add 1 2 sp
145. &stack &input ... ... 11 12 2 0 ip add 3 sp
146. &stack &input ... ... 11 12 2 0 ip exit 3 sp
147. &stack &input ... ... 11 12 2 0 ip return 3 to caller 3 sp
149. v @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^
150. v @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ ip
151. v @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ ip
152. v @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 ip
153. v @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 0 ip
154. v @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 0 0 ip
155. v @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 0 0 ip
156. 3 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ ip [n]
157. 3 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 ip [n]
158. 3 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 1 ip [n]
159. 3 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 1 0 ip [n]
160. 3 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 1 0 ip [n]
161. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ ip [n,i]
162. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 ip [n,i]
163. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ ip [n,i] Output: 0
164. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ ip [n,i] Output: 0
165. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 32 ip [n,i] Output: 0
166. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 32 ip [n,i] Output: 0
167. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ ip [n,i] Output: 0
168. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ ip [n,i] Output: 0
169. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 ip [n,i] Output: 0
170. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 0 ip [n,i] Output: 0
171. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 ip [n,i] Output: 0
172. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 1 ip [n,i] Output: 0
173. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 1 0 ip [n,i] Output: 0
174. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 0 ip [n,i] Output: 0
175. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 0 ip [n,i] Output: 0
176. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 ip
177. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 ip
178. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 ip
179. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 ip
180. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 [n,i] Output: 0 ip
181. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 0 [n,i] Output: 0 ip
182. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 [n,i] Output: 0 ip
183. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 1 [n,i] Output: 0 ip
184. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 [n,i] Output: 0 ip
185. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 1 [n,i] Output: 0 ip
186. 30 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 1 0 [n,i] Output: 0 ip
187. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 ip
188. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 [n,i] Output: 0 ip
189. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 0 [n,i] Output: 0 ip
190. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 [n,i] Output: 0 ip
191. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
192. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
193. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 32 [n,i] Output: 0 1 ip
194. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
195. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
196. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
197. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 ip [n,i] Output: 0 1
198. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 0 0 ip [n,i] Output: 0 1
199. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 ip [n,i] Output: 0 1
200. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 1 ip [n,i] Output: 0
201. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 1 0 ip [n,i] Output: 0 1
202. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 1 ip [n,i] Output: 0 1
203. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 1 [n,i] Output: 0 1 ip
204. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
205. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
206. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
207. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
208. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 [n,i] Output: 0 1 ip
209. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 0 [n,i] Output: 0 1 ip
210. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 [n,i] Output: 0 1 ip
211. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 1 [n,i] Output: 0 1 ip
212. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 2 [n,i] Output: 0 1 ip
213. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 2 1 [n,i] Output: 0 1 ip
214. 31 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 2 1 0 [n,i] Output: 0 1 ip
215. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 ip
216. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 [n,i] Output: 0 1 ip
217. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 1 0 [n,i] Output: 0 1 ip
218. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 2 [n,i] Output: 0 1 ip
219. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 ip
220. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 ip
221. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 32 [n,i] Output: 0 1 2 ip
222. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 ip
223. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 ip
224. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 ip
225. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 2 [n,i] Output: 0 1 2 ip
226. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 ip
227. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 ip
228. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 ip
229. 32 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 [n,i] Output: 0 1 2 ip
230. 33 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 3 ip
231. 33 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 3 ip
232. 33 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 3 ip
233. 33 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ 3 3 [n,i] Output: 0 1 2 3 ip
234. 33 @ > & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @ v < > 10g 1+ 10p ;; 10g. ;; " ", ^ [n,i] Output: 0 1 2 3 ip
236. int sp = 0; double val[MAXVAL]; void push(double f) { val[sp++] = f; } double pop(void) { return val[--sp]; }
237. /* reverse Polish calculator */ int main(int argc, char **argv) { int type; double op2; char s[MAXOP]; while ((type = getop(s)) != EOF) { switch (type) { case NUMBER: push(atof(s)); break; case '+': push (pop() + pop()) ; break; case '*': push(pop() * pop()); break; case '-': op2 = pop(); push(pop() - op2); break; case '/': op2 = pop(); if (op2 != 0.0) push(pop() / op2); else printf("error: zero divisor\n"); break; case '\n': printf("\t%.8g\n", pop()); break; default: printf("error: unknown command %s\n", s); break; } } return 0; }
238. RPN calculator 3 4 + 7 5 5 * 25 2 3 + 2 * 10
239. mandatory XKCD
240. brainfuck
241. >+++++++++[<+++++++ +>-]<.>+++++++[<+++ +>-]<+.+++++++..++ +.>>>++++++++[<+++ +>-]<.>>>++++++++++[< +++++++++>-]<---.<<<<. +++.------.--------.>>+.
242. 0 0 0 0 0 0 0 0 0 p
243. on turing completeness
244. chicken in chicken?
246. References • Paper by Doug Zongker isotropic.org/papers/chicken.pdf youtube.com/watch?v=yL_-1d9OSdk • Chicken.js by Torbjörn Söderstedt torso.me/chicken
247. Chicken • Chicken • Chicken • Chicken
248. Questions? • Chicken Chicken Chicken • github.com/igorw/chicken-php • github.com/igorw/befunge-php • github.com/igorw/brainfuck-php • @igorwesome