core/vm: don't use iota for opcode definitions

core/vm/opcodes.go

@@ -39,68 +39,68 @@ func (op OpCode) IsStaticJump() bool {
 
 // 0x0 range - arithmetic ops.
 const (
-	STOP OpCode = iota
+	STOP       OpCode = 0x0
-	ADD
+	ADD        OpCode = 0x1
-	MUL
+	MUL        OpCode = 0x2
-	SUB
+	SUB        OpCode = 0x3
-	DIV
+	DIV        OpCode = 0x4
-	SDIV
+	SDIV       OpCode = 0x5
-	MOD
+	MOD        OpCode = 0x6
-	SMOD
+	SMOD       OpCode = 0x7
-	ADDMOD
+	ADDMOD     OpCode = 0x8
-	MULMOD
+	MULMOD     OpCode = 0x9
-	EXP
+	EXP        OpCode = 0xa
-	SIGNEXTEND
+	SIGNEXTEND OpCode = 0xb
 )
 
 // 0x10 range - comparison ops.
 const (
-	LT OpCode = iota + 0x10
+	LT     OpCode = 0x10
-	GT
+	GT     OpCode = 0x11
-	SLT
+	SLT    OpCode = 0x12
-	SGT
+	SGT    OpCode = 0x13
-	EQ
+	EQ     OpCode = 0x14
-	ISZERO
+	ISZERO OpCode = 0x15
-	AND
+	AND    OpCode = 0x16
-	OR
+	OR     OpCode = 0x17
-	XOR
+	XOR    OpCode = 0x18
-	NOT
+	NOT    OpCode = 0x19
-	BYTE
+	BYTE   OpCode = 0x1a
-	SHL
+	SHL    OpCode = 0x1b
-	SHR
+	SHR    OpCode = 0x1c
-	SAR
+	SAR    OpCode = 0x1d
 
 	SHA3 OpCode = 0x20
 )
 
 // 0x30 range - closure state.
 const (
-	ADDRESS OpCode = 0x30 + iota
+	ADDRESS        OpCode = 0x30
-	BALANCE
+	BALANCE        OpCode = 0x31
-	ORIGIN
+	ORIGIN         OpCode = 0x32
-	CALLER
+	CALLER         OpCode = 0x33
-	CALLVALUE
+	CALLVALUE      OpCode = 0x34
-	CALLDATALOAD
+	CALLDATALOAD   OpCode = 0x35
-	CALLDATASIZE
+	CALLDATASIZE   OpCode = 0x36
-	CALLDATACOPY
+	CALLDATACOPY   OpCode = 0x37
-	CODESIZE
+	CODESIZE       OpCode = 0x38
-	CODECOPY
+	CODECOPY       OpCode = 0x39
-	GASPRICE
+	GASPRICE       OpCode = 0x3a
-	EXTCODESIZE
+	EXTCODESIZE    OpCode = 0x3b
-	EXTCODECOPY
+	EXTCODECOPY    OpCode = 0x3c
-	RETURNDATASIZE
+	RETURNDATASIZE OpCode = 0x3d
-	RETURNDATACOPY
+	RETURNDATACOPY OpCode = 0x3e
-	EXTCODEHASH
+	EXTCODEHASH    OpCode = 0x3f
 )
 
 // 0x40 range - block operations.
 const (
-	BLOCKHASH OpCode = 0x40 + iota
+	BLOCKHASH   OpCode = 0x40
-	COINBASE
+	COINBASE    OpCode = 0x41
-	TIMESTAMP
+	TIMESTAMP   OpCode = 0x42
-	NUMBER
+	NUMBER      OpCode = 0x43
-	DIFFICULTY
+	DIFFICULTY  OpCode = 0x44
-	GASLIMIT
+	GASLIMIT    OpCode = 0x45
 	CHAINID     OpCode = 0x46
 	SELFBALANCE OpCode = 0x47
 	BASEFEE     OpCode = 0x48
@@ -122,7 +122,7 @@ const (
 	JUMPDEST OpCode = 0x5b
 )
 
-// 0x60 range.
+// 0x60 range - pushes.
 const (
 	PUSH1 OpCode = 0x60 + iota
 	PUSH2
@@ -156,7 +156,11 @@ const (
 	PUSH30
 	PUSH31
 	PUSH32
-	DUP1
+)
+
+// 0x80 range - dups.
+const (
+	DUP1 = 0x80 + iota
 	DUP2
 	DUP3
 	DUP4
@@ -172,7 +176,11 @@ const (
 	DUP14
 	DUP15
 	DUP16
-	SWAP1
+)
+
+// 0x90 range - swaps.
+const (
+	SWAP1 = 0x90 + iota
 	SWAP2
 	SWAP3
 	SWAP4
@@ -208,12 +216,13 @@ const (
 
 // 0xf0 range - closures.
 const (
-	CREATE OpCode = 0xf0 + iota
+	CREATE       OpCode = 0xf0
-	CALL
+	CALL         OpCode = 0xf1
-	CALLCODE
+	CALLCODE     OpCode = 0xf2
-	RETURN
+	RETURN       OpCode = 0xf3
-	DELEGATECALL
+	DELEGATECALL OpCode = 0xf4
-	CREATE2
+	CREATE2      OpCode = 0xf5
+
 	STATICCALL   OpCode = 0xfa
 	REVERT       OpCode = 0xfd
 	SELFDESTRUCT OpCode = 0xff