アセンブラーを作る。 その3

#概要

アセンブラーを作る。
avrのアセンブラー、作ってみた。

#投入したソース

asm.inc(16)
asm.dec(16)
asm.cpi(16, 10)
asm.ldi(16, 1)
asm.in(4, 16)
asm.out(4, 16)
asm.breq(-3)
asm.brne(-3)
asm.brge(-3)
asm.brlt(-3)
asm.rjmp(-3)
asm.ret()
asm.reti()
asm.nop()

#結果

9503
950A
300A
E001
B104
B904
F3E9
F7E9
F3EC
F7EC
CFFD
9508
9518
0000

#サンプルコード

function opcode4(a) {
	var res;
  switch (a) 
  {
	case "0000":
		res = "0";
	break;
	case "0001":
		res = "1";
	break;
	case "0010":
		res = "2";
	break;
	case "0011":
		res = "3";
	break;
	case "0100":
		res = "4";
	break;
	case "0101":
		res = "5";
	break;
	case "0110":
		res = "6";
	break;
	case "0111":
		res = "7";
	break;
	case "1000":
		res = "8";
	break;
	case "1001":
		res = "9";
	break;
	case "1010":
		res = "A";
	break;
	case "1011":
		res = "B";
	break;
	case "1100":
		res = "C";
	break;
	case "1101":
		res = "D";
	break;
	case "1110":
		res = "E";
	break;
	case "1111":
		res = "F";
	break;
	}
  return res;
};
function opcode(s) {
  var res;
  res = opcode4(s.substring(0, 4)) 
    + opcode4(s.substring(4, 8))
    + opcode4(s.substring(8, 12))
    + opcode4(s.substring(12, 16));  
  return res + "\n";
}
function ado12(i) {
	var d;
	if (i < 0)
	{
		d = Math.abs(i);
		d = ~d + 1 >>> 0;
	}
	else
	{
		d = i >>> 0;
	}
	var b = d.toString(2);
  return ('000000000000' + b).slice(-12);
}
function ado7(i) {
	var d;
	if (i < 0)
	{
		d = Math.abs(i);
		d = ~d + 1 >>> 0;
	}
	else
	{
		d = i >>> 0;
	}
	var b = d.toString(2);
  return ('000000000000' + b).slice(-7);
}
function reg5(i) {
	var b = i.toString(2);
  return ('00000' + b).slice(-5);
}
function reg5l(i) {
	var d = i & 0xf;
	var b = d.toString(2);
  return ('0000' + b).slice(-4);
}
function reg5h(i) {
	var d = i >> 4;
	var b = d.toString(2);
  return ('00' + b).slice(-1);
}
function reg4(i) {
	var b = i.toString(2);
  return ('00000' + b).slice(-4);
}
function imm6l(i) {
	var d = i & 0xf;
	var b = d.toString(2);
  return ('0000' + b).slice(-4);
}
function imm6h(i) {
	var d = i >> 4;
	var b = d.toString(2);
  return ('00' + b).slice(-2);
}
function imm8l(i) {
	var d = i & 0xf;
	var b = d.toString(2);
  return ('0000' + b).slice(-4);
}
function imm8h(i) {
	var d = i >> 4;
	var b = d.toString(2);
  return ('0000' + b).slice(-4);
}
var asm = {
 	PC: 0,
	add: function(r0, r1) {
		out.value += opcode("000011" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},
	sub: function(r0, r1) {
		out.value += opcode("000110" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},
	and: function(r0, r1) {
		out.value += opcode("001000" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},
	or: function(r0, r1) {
		out.value += opcode("001010" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},
	eor: function(r0, r1) {
		out.value += opcode("001001" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},
	mul: function(r0, r1) {
		out.value += opcode("100111" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},
	mov: function(r0, r1) {
		out.value += opcode("001011" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},
	lsl: function(r0, r1) {
		out.value += opcode("000011" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},
	cp: function(r0, r1) {
		out.value += opcode("000101" + reg5h(r1) + reg5(r0) + reg5l(r1));
		this.PC++;
	},

	inc: function(r) {
		out.value += opcode("1001010" + reg5(r) + "0011");
		this.PC++;
	},
	dec: function(r) {
		out.value += opcode("1001010" + reg5(r) + "1010");
		this.PC++;
	},
	cpi: function(r, i) {
		out.value += opcode("0011" + imm8h(i) + reg4(r) + imm8l(i));
		this.PC++;
	},
	ldi: function(r, i) {
		out.value += opcode("1110" + imm8h(i) + reg4(r) + imm8l(i));
		this.PC++;
	},
	in: function(io, r) {
		out.value += opcode("10110" + imm6h(io) + reg5(r) + imm6l(io));
		this.PC++;
	},
	out: function(io, r) {
		out.value += opcode("10111" + imm6h(io) + reg5(r) + imm6l(io));
		this.PC++;
	},
	breq: function(i) {
		out.value += opcode("111100" + ado7(i) + "001");
		this.PC++;
  },
	brne: function(i) {
		out.value += opcode("111101" + ado7(i) + "001");
		this.PC++;
  },
	brge: function(i) {
		out.value += opcode("111100" + ado7(i) + "100");
		this.PC++;
  },
	brlt: function(i) {
		out.value += opcode("111101" + ado7(i) + "100");
		this.PC++;
  },
	rcall: function(i) {
		out.value += opcode("1101" + ado12(i));
		this.PC++;
  },
	rjmp: function(i) {
		out.value += opcode("1100" + ado12(i));
		this.PC++;
  },
	ret: function() {
		out.value += opcode("1001010100001000");
		this.PC++;
  },
	reti: function() {
		out.value += opcode("1001010100011000");
		this.PC++;
  },
	nop: function() {
		out.value += opcode("0000000000000000");
		this.PC++;
  },
}

#成果物

以上。