fix .gitignore, Makefile and README.md for 2014/endoh

Unpack src.zip.

2014/endoh1/machine.rb

@@ -0,0 +1,57 @@
+# 33       : not used
+# 34       : NG
+# 35..55   : read
+# 56..76   : write
+# 77..85   : binary op
+# 86..91   : not used
+# 92       : NG
+# 93..98   : control (0..5)
+# 99..104  : other insns (6..12)
+# 105..126 : num (13..32)
+
+MNEMONIC = {
+  :Nop => "",
+
+  :+    => 77.chr,
+  :-    => 78.chr,
+  :*    => 79.chr,
+  :"&&" => 79.chr,
+  :^    => 80.chr,
+  :>    => 81.chr,
+  :/    => 82.chr,
+  :%    => 83.chr,
+  :">>" => 84.chr, #  6
+  :"==" => 85.chr,
+
+  :BranchS => 93.chr, # 0 -> BranchM
+  :LoopM   => 94.chr, # 1 -> LoopE
+  :BranchM => 95.chr, # 2 -> BranchE
+  :LoopE   => 96.chr, # 3 -> LoopS (back)
+  :BranchE => 97.chr, # 4
+  :LoopS   => 98.chr, # 5
+
+  :ARef =>  99.chr, # 6
+  :ASet => 100.chr, # 7
+  :Out  => 101.chr, # 8
+  :Exit => 102.chr, # 9
+  :Inc  => 103.chr, # 10
+  :Dec  => 104.chr, # 11
+
+  :Test => 105.chr,
+}
+
+REGISTER_READ = 35
+REGISTER_WRITE = 56
+IMM = 106
+
+def encode_number(n)
+  if n >= 0
+    tt = n.to_s(126 - IMM + 1).tr("0-9a-z", [*IMM.chr..126.chr].join)
+    raise if tt[0] == 126.chr
+    tt[0, 1] = tt[0].tr([*IMM.chr..125.chr].join, [*(IMM + 1).chr..126.chr].join)
+  else
+    raise if n != -1
+    tt = IMM.chr
+  end
+  tt
+end