8fe079ec8e
* refactor to use ast.Walk for recursive converting * added lots of test cases * added a new way to handle jump labels * function calls with multiple arguments * binary expression (LOR LAND) * struct types + method receives * cleaner opcode dumps, side by side diff for debugging test cases
129 lines
6.5 KiB
Go
129 lines
6.5 KiB
Go
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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Opush0 Opcode = 0x00 // An empty array of bytes is pushed onto the stack.
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Opushf Opcode = Opush0
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Opushbytes1 Opcode = 0x01 // 0x01-0x4B The next opcode bytes is data to be pushed onto the stack
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Opushbytes75 Opcode = 0x4B
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Opushdata1 Opcode = 0x4C // The next byte contains the number of bytes to be pushed onto the stack.
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Opushdata2 Opcode = 0x4D // The next two bytes contain the number of bytes to be pushed onto the stack.
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Opushdata4 Opcode = 0x4E // The next four bytes contain the number of bytes to be pushed onto the stack.
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Opushm1 Opcode = 0x4F // The number -1 is pushed onto the stack.
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Opush1 Opcode = 0x51
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Opusht Opcode = Opush1
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Opush2 Opcode = 0x52 // The number 2 is pushed onto the stack.
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Opush3 Opcode = 0x53 // The number 3 is pushed onto the stack.
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Opush4 Opcode = 0x54 // The number 4 is pushed onto the stack.
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Opush5 Opcode = 0x55 // The number 5 is pushed onto the stack.
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Opush6 Opcode = 0x56 // The number 6 is pushed onto the stack.
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Opush7 Opcode = 0x57 // The number 7 is pushed onto the stack.
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Opush8 Opcode = 0x58 // The number 8 is pushed onto the stack.
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Opush9 Opcode = 0x59 // The number 9 is pushed onto the stack.
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Opush10 Opcode = 0x5A // The number 10 is pushed onto the stack.
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Opush11 Opcode = 0x5B // The number 11 is pushed onto the stack.
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Opush12 Opcode = 0x5C // The number 12 is pushed onto the stack.
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Opush13 Opcode = 0x5D // The number 13 is pushed onto the stack.
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Opush14 Opcode = 0x5E // The number 14 is pushed onto the stack.
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Opush15 Opcode = 0x5F // The number 15 is pushed onto the stack.
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Opush16 Opcode = 0x60 // The number 16 is pushed onto the stack.
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// Flow control
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Onop Opcode = 0x61 // No operation.
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Ojmp Opcode = 0x62
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Ojmpif Opcode = 0x63
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Ojmpifnot Opcode = 0x64
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Ocall Opcode = 0x65
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Oret Opcode = 0x66
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Opcall Opcode = 0x67
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Osyscall Opcode = 0x68
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Otailcall Opcode = 0x69
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// The stack
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Odupfromaltstack Opcode = 0x6A
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Otoaltstack Opcode = 0x6B // Puts the input onto the top of the alt stack. Removes it from the main stack.
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Ofromaltstack Opcode = 0x6C // Puts the input onto the top of the main stack. Removes it from the alt stack.
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Oxdrop Opcode = 0x6D
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Oxswap Opcode = 0x72
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Oxtuck Opcode = 0x73
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Odepth Opcode = 0x74 // Puts the number of stack items onto the stack.
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Odrop Opcode = 0x75 // Removes the top stack item.
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Odup Opcode = 0x76 // Duplicates the top stack item.
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Onip Opcode = 0x77 // Removes the second-to-top stack item.
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Oover Opcode = 0x78 // Copies the second-to-top stack item to the top.
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Opick Opcode = 0x79 // The item n back in the stack is copied to the top.
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Oroll Opcode = 0x7A // The item n back in the stack is moved to the top.
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Orot Opcode = 0x7B // The top three items on the stack are rotated to the left.
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Oswap Opcode = 0x7C // The top two items on the stack are swapped.
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Otuck 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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Ocat Opcode = 0x7E // Concatenates two strings.
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Osubstr Opcode = 0x7F // Returns a section of a string.
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Oleft Opcode = 0x80 // Keeps only characters left of the specified point in a string.
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Oright Opcode = 0x81 // Keeps only characters right of the specified point in a string.
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Osize Opcode = 0x82 // Returns the length of the input string.
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// Bitwise logic
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Oinvert Opcode = 0x83 // Flips all of the bits in the input.
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Oand Opcode = 0x84 // Boolean and between each bit in the inputs.
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Oor Opcode = 0x85 // Boolean or between each bit in the inputs.
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Oxor Opcode = 0x86 // Boolean exclusive or between each bit in the inputs.
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Oequal 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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Oinc Opcode = 0x8B // 1 is added to the input.
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Odec Opcode = 0x8C // 1 is subtracted from the input.
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Osign Opcode = 0x8D
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Onegate Opcode = 0x8F // The sign of the input is flipped.
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Oabs Opcode = 0x90 // The input is made positive.
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Onot Opcode = 0x91 // If the input is 0 or 1, it is flipped. Otherwise the output will be 0.
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Onz Opcode = 0x92 // Returns 0 if the input is 0. 1 otherwise.
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Oadd Opcode = 0x93 // a is added to b.
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Osub Opcode = 0x94 // b is subtracted from a.
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Omul Opcode = 0x95 // a is multiplied by b.
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Odiv Opcode = 0x96 // a is divided by b.
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Omod Opcode = 0x97 // Returns the remainder after dividing a by b.
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Oshl Opcode = 0x98 // Shifts a left b bits, preserving sign.
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Oshr Opcode = 0x99 // Shifts a right b bits, preserving sign.
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Obooland Opcode = 0x9A // If both a and b are not 0, the output is 1. Otherwise 0.
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Oboolor Opcode = 0x9B // If a or b is not 0, the output is 1. Otherwise 0.
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Onumequal Opcode = 0x9C // Returns 1 if the numbers are equal, 0 otherwise.
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Onumnotequal Opcode = 0x9E // Returns 1 if the numbers are not equal, 0 otherwise.
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Olt Opcode = 0x9F // Returns 1 if a is less than b, 0 otherwise.
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Ogt Opcode = 0xA0 // Returns 1 if a is greater than b, 0 otherwise.
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Olte Opcode = 0xA1 // Returns 1 if a is less than or equal to b, 0 otherwise.
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Ogte Opcode = 0xA2 // Returns 1 if a is greater than or equal to b, 0 otherwise.
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Omin Opcode = 0xA3 // Returns the smaller of a and b.
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Omax Opcode = 0xA4 // Returns the larger of a and b.
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Owithin Opcode = 0xA5 // Returns 1 if x is within the specified range (left-inclusive), 0 otherwise.
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// Crypto
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Osha1 Opcode = 0xA7 // The input is hashed using SHA-1.
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Osha256 Opcode = 0xA8 // The input is hashed using SHA-256.
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Ohash160 Opcode = 0xA9
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Ohash256 Opcode = 0xAA
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Ochecksig Opcode = 0xAC
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Ocheckmultisig Opcode = 0xAE
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// array
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Oarraysize Opcode = 0xC0
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Opack Opcode = 0xC1
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Ounpack Opcode = 0xC2
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Opickitem Opcode = 0xC3
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Osetitem Opcode = 0xC4
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Onewarray 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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Onewstruct Opcode = 0xC6
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Oappend Opcode = 0xC8
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Oreverse Opcode = 0xC9
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Oremove Opcode = 0xCA
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// exceptions
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Othrow Opcode = 0xF0
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Othrowifnot Opcode = 0xF1
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)
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