130 lines
6.6 KiB
Go
130 lines
6.6 KiB
Go
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package vm
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// OpCode is an single operational instruction for the GO NEO virtual machine.
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type OpCode byte
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// List of supported opcodes.
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const (
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// Constants
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OpPush0 OpCode = 0x00 // An empty array of bytes is pushed onto the stack.
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OpPushF OpCode = OpPush0
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OpPushBytes1 OpCode = 0x01 // 0x01-0x4B The next opcode bytes is data to be pushed onto the stack
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OpPushBytes75 OpCode = 0x4B
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OpPushData1 OpCode = 0x4C // The next byte contains the number of bytes to be pushed onto the stack.
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OpPushData2 OpCode = 0x4D // The next two bytes contain the number of bytes to be pushed onto the stack.
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OpPushData4 OpCode = 0x4E // The next four bytes contain the number of bytes to be pushed onto the stack.
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OpPushM1 OpCode = 0x4F // The number -1 is pushed onto the stack.
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OpPush1 OpCode = 0x51
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OpPushT OpCode = OpPush1
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OpPush2 OpCode = 0x52 // The number 2 is pushed onto the stack.
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OpPush3 OpCode = 0x53 // The number 3 is pushed onto the stack.
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OpPush4 OpCode = 0x54 // The number 4 is pushed onto the stack.
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OpPush5 OpCode = 0x55 // The number 5 is pushed onto the stack.
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OpPush6 OpCode = 0x56 // The number 6 is pushed onto the stack.
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OpPush7 OpCode = 0x57 // The number 7 is pushed onto the stack.
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OpPush8 OpCode = 0x58 // The number 8 is pushed onto the stack.
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OpPush9 OpCode = 0x59 // The number 9 is pushed onto the stack.
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OpPush10 OpCode = 0x5A // The number 10 is pushed onto the stack.
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OpPush11 OpCode = 0x5B // The number 11 is pushed onto the stack.
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OpPush12 OpCode = 0x5C // The number 12 is pushed onto the stack.
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OpPush13 OpCode = 0x5D // The number 13 is pushed onto the stack.
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OpPush14 OpCode = 0x5E // The number 14 is pushed onto the stack.
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OpPush15 OpCode = 0x5F // The number 15 is pushed onto the stack.
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OpPush16 OpCode = 0x60 // The number 16 is pushed onto the stack.
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// Flow control
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OpNOP OpCode = 0x61 // No operation.
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OpJMP OpCode = 0x62
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OpJMPIF OpCode = 0x63
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OpJMPIFNOT OpCode = 0x64
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OpCall OpCode = 0x65
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OpRET OpCode = 0x66
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OpAppCall OpCode = 0x67
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OpSysCall OpCode = 0x68
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OpTailCall OpCode = 0x69
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// The stack
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OpDupFromAltStack OpCode = 0x6A
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OpToAltStack OpCode = 0x6B // Puts the input onto the top of the alt stack. Removes it from the main stack.
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OpFromAltStack OpCode = 0x6C // Puts the input onto the top of the main stack. Removes it from the alt stack.
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OpXDrop OpCode = 0x6D
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OpXSwap OpCode = 0x72
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OpXTuck OpCode = 0x73
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OpDepth OpCode = 0x74 // Puts the number of stack items onto the stack.
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OpDrop OpCode = 0x75 // Removes the top stack item.
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OpDup OpCode = 0x76 // Duplicates the top stack item.
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OpNip OpCode = 0x77 // Removes the second-to-top stack item.
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OpOver OpCode = 0x78 // Copies the second-to-top stack item to the top.
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OpPick OpCode = 0x79 // The item n back in the stack is copied to the top.
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OpRoll OpCode = 0x7A // The item n back in the stack is moved to the top.
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OpRot OpCode = 0x7B // The top three items on the stack are rotated to the left.
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OpSwap OpCode = 0x7C // The top two items on the stack are swapped.
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OpTuck OpCode = 0x7D // The item at the top of the stack is copied and inserted before the second-to-top item.
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// Splice
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OpCat OpCode = 0x7E // Concatenates two strings.
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OpSubStr OpCode = 0x7F // Returns a section of a string.
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OpLeft OpCode = 0x80 // Keeps only characters left of the specified point in a string.
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OpRight OpCode = 0x81 // Keeps only characters right of the specified point in a string.
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OpSize OpCode = 0x82 // Returns the length of the input string.
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// Bitwise logic
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OpInvert OpCode = 0x83 // Flips all of the bits in the input.
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OpAnd OpCode = 0x84 // Boolean and between each bit in the inputs.
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OpOr OpCode = 0x85 // Boolean or between each bit in the inputs.
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OpXor OpCode = 0x86 // Boolean exclusive or between each bit in the inputs.
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OpEqual OpCode = 0x87 // Returns 1 if the inputs are exactly equal, 0 otherwise.
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// Arithmetic
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// Note: Arithmetic inputs are limited to signed 32-bit integers, but may overflow their output.
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OpInc OpCode = 0x8B // 1 is added to the input.
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OpDec OpCode = 0x8C // 1 is subtracted from the input.
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OpSign OpCode = 0x8D
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OpNegate OpCode = 0x8F // The sign of the input is flipped.
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OpAbs OpCode = 0x90 // The input is made positive.
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OpNot OpCode = 0x91 // If the input is 0 or 1, it is flipped. Otherwise the output will be 0.
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OpNZ OpCode = 0x92 // Returns 0 if the input is 0. 1 otherwise.
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OpAdd OpCode = 0x93 // a is added to b.
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OpSub OpCode = 0x94 // b is subtracted from a.
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OpMul OpCode = 0x95 // a is multiplied by b.
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OpDiv OpCode = 0x96 // a is divided by b.
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OpMod OpCode = 0x97 // Returns the remainder after dividing a by b.
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OpShl OpCode = 0x98 // Shifts a left b bits, preserving sign.
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OpShr OpCode = 0x99 // Shifts a right b bits, preserving sign.
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OpBoolAnd OpCode = 0x9A // If both a and b are not 0, the output is 1. Otherwise 0.
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OpBoolOr OpCode = 0x9B // If a or b is not 0, the output is 1. Otherwise 0.
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OpNumEqual OpCode = 0x9C // Returns 1 if the numbers are equal, 0 otherwise.
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OpNumNotEqual OpCode = 0x9E // Returns 1 if the numbers are not equal, 0 otherwise.
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OpLT OpCode = 0x9F // Returns 1 if a is less than b, 0 otherwise.
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OpGT OpCode = 0xA0 // Returns 1 if a is greater than b, 0 otherwise.
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OpLTE OpCode = 0xA1 // Returns 1 if a is less than or equal to b, 0 otherwise.
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OpGTE OpCode = 0xA2 // Returns 1 if a is greater than or equal to b, 0 otherwise.
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OpMin OpCode = 0xA3 // Returns the smaller of a and b.
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OpMax OpCode = 0xA4 // Returns the larger of a and b.
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OpWithin OpCode = 0xA5 // Returns 1 if x is within the specified range (left-inclusive), 0 otherwise.
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// Crypto
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OpSHA1 OpCode = 0xA7 // The input is hashed using SHA-1.
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OpSHA256 OpCode = 0xA8 // The input is hashed using SHA-256.
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OpHASH160 OpCode = 0xA9
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OpHASH256 OpCode = 0xAA
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OpCheckSig OpCode = 0xAC
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OpCheckMultiSig OpCode = 0xAE
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// Array
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OpArraySize OpCode = 0xC0
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OpPack OpCode = 0xC1
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OpUnpack OpCode = 0xC2
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OpPickItem OpCode = 0xC3
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OpSetItem OpCode = 0xC4
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OpNewArray OpCode = 0xC5 // Pops size from stack and creates a new array with that size, and pushes the array into the stack
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OpNewStruct OpCode = 0xC6
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OpAppend OpCode = 0xC8
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OpReverse OpCode = 0xC9
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OpRemove OpCode = 0xCA
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// Exceptions
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OpThrow OpCode = 0xF0
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OpThrowIfNot OpCode = 0xF1
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)
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