34 lines
937 B
JavaScript
34 lines
937 B
JavaScript
'use strict';
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let opcodes = {
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0x01: { mnemonic: 'ADD', evaluate: (vm) => {
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let v1 = vm.stack.pop();
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let v2 = vm.stack.pop();
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vm.stack.push(v1+v2);
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}},
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0x02: { mnemonic: 'MUL', evaluate: (vm) => {
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//
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// **YOUR CODE HERE**
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//
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// Pop the top two arguments off of the stack,
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// and then push the result on to the stack.
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}},
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0x5B: { mnemonic: 'JUMPDEST', evaluate: (vm) => {
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// Does nothing. We could check to make sure that jumps
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// always land at JUMPDEST opcodes, but it is not totally
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// clear that it is worth the bother.
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}},
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0x60: { mnemonic: 'PUSH1', evaluate: (vm) => {
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// The next byte is data, not another instruction
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vm.pc++;
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let v = vm.bytecode.readUInt8(vm.pc);
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vm.stack.push(v);
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}},
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0x0c: { mnemonic: 'PRINT', evaluate: (vm) => {
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// **NOTE**: This is not a real EVM opcode.
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console.log(vm.stack.pop());
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}},
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};
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exports.opcodes = opcodes;
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