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opcodes.zkasm
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opcodes.zkasm
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INCLUDE "utils.zkasm"
opSTOP:
$ => B :MLOAD(originCTX)
B - 1 :JMPN(handleGas)
$ => A :MLOAD(gasRefund)
$ => C :MLOAD(isCreate)
1 => D
C - 1 :JMPN(opSTOPend)
$ => D :MLOAD(createContractAddress)
opSTOPend:
B => CTX
CTX :MSTORE(currentCTX)
0 :MSTORE(retDataCTX)
$ => B :MLOAD(gasCTX)
A :MSTORE(gasRefund)
GAS + B => GAS
$ => SP :MLOAD(lastSP)
$ => PC :MLOAD(lastPC)
D :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
$ => A :MLOAD(depth)
A - 1 :MSTORE(depth)
${commit()}
:JMP(readCode)
opADD:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
; Add operation with Arith
$ => E :ADD
E :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-3 => GAS :JMPN(outOfGas)
:JMP(readCode)
opMUL:
%MAX_CNT_ARITH - CNT_ARITH - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
; Mul operation with Arith
A :MSTORE(arithA)
B :MSTORE(arithB)
:CALL(mulARITH)
$ => E :MLOAD(arithRes1)
E :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-5 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSUB:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
$ => E :SUB
E :MSTORE(SP++)
GAS-3 => GAS :JMPN(outOfGas)
:JMP(readCode)
opDIV:
%MAX_CNT_ARITH - CNT_ARITH - 1 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 2 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => E :MLOAD(SP--)
$ => A :MLOAD(SP)
; Div operation with Arith
E :MSTORE(arithA)
A :MSTORE(arithB)
:CALL(divARITH)
$ => B :MLOAD(arithRes1)
B :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-5 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSDIV:
%MAX_CNT_ARITH - CNT_ARITH - 1 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 8 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
:CALL(abs)
A => E
B => C
$ => A :MLOAD(SP)
:CALL(abs)
A :MSTORE(tmpVarA)
C => A
$ => A :XOR
1 => B
$ => B :XOR
$ => A :MLOAD(tmpVarA)
B - 1 :JMPN(opSDIVNeg) ;0 negative, 1 positive
; Div operation with Arith
E :MSTORE(arithA)
A :MSTORE(arithB)
:CALL(divARITH)
$ => B :MLOAD(arithRes1)
B :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-5 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSDIVNeg:
; Div operation with Arith
E :MSTORE(arithA)
A :MSTORE(arithB)
:CALL(divARITH)
$ => B :MLOAD(arithRes1)
0 => A
$ => A :SUB
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-5 => GAS :JMPN(outOfGas)
:JMP(readCode)
opMOD:
%MAX_CNT_ARITH - CNT_ARITH - 1 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 2 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => E :MLOAD(SP--)
$ => A :MLOAD(SP)
; Mod operation with Arith
E :MSTORE(arithA)
A :MSTORE(arithB)
:CALL(divARITH)
$ => C :MLOAD(arithRes2)
C :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-5 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSMOD:
%MAX_CNT_ARITH - CNT_ARITH - 1 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 8 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
:CALL(abs)
A => E
B => C
$ => A :MLOAD(SP)
:CALL(abs)
A :MSTORE(tmpVarA)
C => A
1 => B
$ => B :XOR
$ => A :MLOAD(tmpVarA)
B - 1 :JMPN(opSMODNeg) ; 0 negative, 1 positive
; Div operation with Arith
E :MSTORE(arithA)
A :MSTORE(arithB)
:CALL(divARITH)
$ => C :MLOAD(arithRes2)
C :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-5 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSMODNeg:
; Div operation with Arith
E :MSTORE(arithA)
A :MSTORE(arithB)
:CALL(divARITH)
$ => B :MLOAD(arithRes2)
0 => A
$ => A :SUB
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-5 => GAS :JMPN(outOfGas)
:JMP(readCode)
opADDMOD:
%MAX_CNT_ARITH - CNT_ARITH - 1 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 4 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 80 :JMPN(outOfCounters)
GAS-8 => GAS :JMPN(outOfGas)
SP - 3 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP--)
; Add operation with Arith
${var _addMod = A + B} ; TODO $$
1 => D
$ => A :ADD, JMPC(AddModJumpCarry) ; or arith
0 => D
AddModJumpCarry:
A => E ; Store sumResult on E
$ => A :MLOAD(SP) ; load modulus
2 => B
$ :LT, JMPC(zeroOneMod)
${_addMod / A} => B ; k: Max should be (2^256 -1) * 2 / 2 --> smaller than 2^256
${_addMod % A} => C ; addModResult
; k * N + addModResult = D*2^256 + sumResult
; B * A + C = D*2^256 + E
; Check addModResult is less than modulus
E :ARITH
A => B ; modulus
C => A ; addModResult
$ => A :LT
1 :ASSERT
C :MSTORE(SP++)
:JMP(readCode)
opMULMOD:
%MAX_CNT_ARITH - CNT_ARITH - 3 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 3 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 150 :JMPN(outOfCounters)
GAS-8 => GAS :JMPN(outOfGas)
SP - 3 :JMPN(stackUnderflow)
SP - 1 => SP
; The following approach will be followed in order to verify the mulmod operation
; A * B + 0 = D*2^256 + E
; K * N + mulModResult = D*2^256 + E
; Since the k can be bigger than 2²⁵⁶ and therefore does not fit in a register we divedit in the
; most significan and less significant part:
; (k.l + k.h * 2²⁵⁶) * N + mulModResult = (D1 + D2) * 2²⁵⁶ + E
; And divide this operation in 2 which fits in 2²⁵⁶ digits
;k.l * N + mulModResult = D1 * 2²⁵⁶ + E
;k.h * 2²⁵⁶ * N = D2 * 2²⁵⁶ --> k.h * N = D2
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP--)
; Mul operation with Arith
${var _mulMod = A * B} ; TODO $$
A :MSTORE(arithA)
B :MSTORE(arithB)
; here we perform the: A * B + 0 = D*2^256 + E
; result is stored in: arithRes1(E) and arithOverflow(D)
:CALL(mulARITH)
$ => A :MLOAD(SP) ; Modulus N
; Check if modulus is 0 or 1
2 => B
$ :LT, JMPC(zeroOneMod)
; Now we will try to perform the following equation:
; (k.l + k.h * 2²⁵⁶) * N + mulModResult = (D1 + D2) * 2²⁵⁶ + E
A => C ; modulus on C
${(_mulMod / C) >> 256} => B ; k.h
; We can jump with Js, because later it's all verified by the ARITH
${cond(B == 0)} :JMPN(mulModNoKH)
; Since there's k.h we will split the equation in those 2
;k.l * N + mulModResult = D1 * 2²⁵⁶ + E
;k.h * 2²⁵⁶ * N = D2 * 2²⁵⁶ --> k.h * N = D2
; k.h * N = D2
; B * A + 0 = 0 * 2²⁵⁶ + E
; D2 must be less than 2²⁵⁶
C => A ; Modulus
0 => C, D
${B * A} => E :MSTORE(tmpVarD), ARITH ; D2
; k.l * N + mulModResult = D1 * 2²⁵⁶ + E
; B * A + C = D*2^256 + E
; remember that:
; result of mul is stored in: arithRes1(E) and arithOverflow(D)
${(_mulMod / A) % (2 << 256)} => B ; k.l
${_mulMod % A} => C ; mulModResult
${(B * A + C) >> 256} => D ; D1
$ :MLOAD(arithRes1), ARITH
; Finally we need to assert the following:
; N>resultModulus
; D1 + D2 = D
; N>resultModulus ; LT; ASSERT
A => B ; modulus
C => A ; mulModResult
$ => A :LT
1 :ASSERT
; Assert D1 + D2 = D ; ADD ;ASSERT
D => A ; D1
$ => B :MLOAD(tmpVarD) ;D2
$ => A :ADD
$ :MLOAD(arithOverflow), ASSERT
C :MSTORE(SP++)
:JMP(readCode)
mulModNoKH:
; if theres no K.h the equation is simplified as:
; K * N + mulModResult = D*2^256 + E
; B * A + C = D*2^256 + E
C => A ; Modulus on A
${(_mulMod / A)} => B ; k
${_mulMod % A} => C ; mulModResult
$ => D :MLOAD(arithOverflow)
$ :MLOAD(arithRes1), ARITH ; Can this be on the same line of MLOAD?
A => B ; modulus
C => A ; mulModResult
$ => A :LT
1 :ASSERT
C :MSTORE(SP++)
:JMP(readCode)
zeroOneMod:
0 :MSTORE(SP++)
:JMP(readCode)
opEXP: ; //TODO: test exp == 0
%MAX_CNT_ARITH - CNT_ARITH - 512 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 1025 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
${exp(A,B)} => A
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:CALL(getLenBytes)
GAS-10-50*A => GAS :JMPN(outOfGas)
:JMP(readCode)
opSIGNEXTEND: ; following this impl https://github.com/ethereumjs/ethereumjs-monorepo/blob/master/packages/vm/src/evm/opcodes/functions.ts#L193
%MAX_CNT_ARITH - CNT_ARITH - 6 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 200 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => B :MLOAD(SP--) ; sign byte --> sign bit = 8 * A + 7
$ => D :MLOAD(SP) ; number to convert
30 => A
$ :LT, JMPC(opSIGNEXTENDEnd); if signByte is 31 or more, means basically let the number as it is
; TODO we could divide this opcode in a table with constants, only 31 cases
B * 8 + 7 => B ; B is less than 31, no need for binary
${exp(2, B)} => A ; signBit TODO table for shifting + multipliyng
;Store mask
1 => B
$ => C :SUB ; mask
D => B ; number to convert
$ => B :AND ; check sign bit
0 => A
$ :EQ, JMPC(opSIGNEXTENDPositive) ; If 0 means the sign bit was 0 --> positive
C => A ; mask
0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffn => B
$ => B :XOR ; not mask
D => A
$ => D :OR
:JMP(opSIGNEXTENDEnd)
opSIGNEXTENDPositive:
C => B
D => A
$ => D :AND
opSIGNEXTENDEnd:
D :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-5 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSLT:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
$ :SLT,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opLT:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
$ :LT,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opSGT:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => B :MLOAD(SP--)
$ => A :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
$ :SLT,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opGT:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => B :MLOAD(SP--)
$ => A :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
$ :LT,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opEQ:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
$ :EQ,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opISZERO:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 1 => SP :JMPN(stackUnderflow)
$ => A :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
0 => B
$ :EQ,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opAND:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
$ :AND,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opOR:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
$ :OR,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opXOR:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => A :MLOAD(SP--)
$ => B :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
$ :XOR,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opNOT:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 1 => SP :JMPN(stackUnderflow)
$ => A :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffn => B
$ => A :XOR,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opBYTE:
%MAX_CNT_ARITH - CNT_ARITH - 2 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 4 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => B :MLOAD(SP--)
$ => A :MLOAD(SP)
GAS-3 => GAS :JMPN(outOfGas)
31 - B => D :JMPN(opBYTE0)
:CALL(SHRarith)
255 => B
$ :AND,MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opBYTE0:
0 :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opSHR:
%MAX_CNT_ARITH - CNT_ARITH - 1 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 3 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => D :MLOAD(SP--)
$ => A :MLOAD(SP)
:CALL(SHRarithBit)
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-3 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSHL:
%MAX_CNT_ARITH - CNT_ARITH - 1 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 3 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => D :MLOAD(SP--)
$ => A :MLOAD(SP)
:CALL(SHLarithBit)
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-3 => GAS :JMPN(outOfGas)
:JMP(readCode)
; TODO: Adapt to multiplication
; https://github.com/ethereumjs/ethereumjs-monorepo/blob/master/packages/evm/src/opcodes/functions.ts#L336
opSAR:
%MAX_CNT_ARITH - CNT_ARITH - 2 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 10 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 200 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => D :MLOAD(SP--)
${D/8} => B
32 => A
$ => A :LT
1 => B
$ => B :XOR
${A * 256 + B * D} => D
$ => A :MLOAD(SP)
:CALL(abs)
; if more than 32 set to 32
:CALL(SHRarithBit)
A => C
B => A
1 => B
$ => B :XOR
B - 1 :JMPN(opSARNeg) ; 0 negative, 1 positive
C :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-3 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSARNeg:
C => A
1 => B
$ => B :LT
${A + B} => B ; TODO: This is UNSAFE
0 => A
$ => A :SUB
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-3 => GAS :JMPN(outOfGas)
:JMP(readCode)
opSHA3:
%MAX_CNT_ARITH - CNT_ARITH - 192 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 193 :JMPN(outOfCounters)
%MAX_CNT_MEM_ALIGN - CNT_MEM_ALIGN - 2 :JMPN(outOfCounters)
%MAX_CNT_POSEIDON_G - CNT_POSEIDON_G - 10 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 200 :JMPN(outOfCounters)
SP - 2 :JMPN(stackUnderflow)
SP - 1 => SP
$ => E :MLOAD(SP--) ; offset
$ => C :MLOAD(SP) ; length
E :MSTORE(lastMemOffset)
C :MSTORE(lastMemLength)
; gas
GAS - 30 => GAS :JMPN(outOfGas); gas static = 30
:CALL(saveMem)
; Div operation with Arith
;${6*((C+31)/32)}
C+31 => A
;(C+31)/32
A :MSTORE(arithA)
32 :MSTORE(arithB)
:CALL(divARITH)
$ => A :MLOAD(arithRes1)
; Mul operation with Arith
; 6*((C+31)/32)
6 :MSTORE(arithA)
A :MSTORE(arithB)
:CALL(mulARITH)
$ => A :MLOAD(arithRes1)
GAS - A => GAS :JMPN(outOfGas) ; dynamic_gas = dynamic_gas = 6 * minimum_word_size + memory_expansion_cost
; check keccak counters
C + 1 :MSTORE(arithA)
136 :MSTORE(arithB)
:CALL(divARITH); in: [arithA, arithB] out: [arithRes1: arithA/arithB, arithRes2: arithA%arithB]
$ => B :MLOAD(arithRes1)
$ => A :MLOAD(cntKeccakPreProcess)
%MAX_CNT_KECCAK_F - CNT_KECCAK_F - A - 1 => A
$ :LT, JMPC(outOfCounters)
; new hash id
$ => B :MLOAD(lastHashKIdUsed)
B + 1 => B :MSTORE(lastHashKIdUsed)
32 => D
; A new hash with position 0 is started
0 => HASHPOS
opSHA3Loop:
%MAX_CNT_BINARY - CNT_BINARY - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 100 :JMPN(outOfCounters)
C - 1 :JMPN(opSHA3End)
C - 32 :JMPN(opSHA3Final)
:CALL(MLOAD32)
E => B
$ => E :MLOAD(lastHashKIdUsed)
A :HASHK(E)
B => E
C - 32 => C
:JMP(opSHA3Loop)
opSHA3Final:
:CALL(MLOADX)
32 - C => D
:CALL(SHRarith)
$ => E :MLOAD(lastHashKIdUsed)
C => D
A :HASHK(E)
opSHA3End:
$ => E :MLOAD(lastHashKIdUsed)
HASHPOS :HASHKLEN(E)
$ => A :HASHKDIGEST(E)
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
:JMP(readCode)
opADDRESS:
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
$ => A :MLOAD(isCreateContract)
0 - A :JMPN(opADDRESSdeploy)
$ => A :MLOAD(storageAddr)
:JMP(opADDRESSend)
opADDRESSdeploy:
$ => A :MLOAD(createContractAddress)
opADDRESSend:
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-2 => GAS :JMPN(outOfGas)
:JMP(readCode)
opBALANCE:
%MAX_CNT_POSEIDON_G - CNT_POSEIDON_G - 252 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
SP - 1 => SP :JMPN(stackUnderflow)
$ => A :MLOAD(SP)
:CALL(maskAddress) ; Mask address to 20 bytes
0 => B,C ; balance smt key
$ => D :SLOAD
D :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
${isWarmedAddress(A)} => D
GAS-100-D*2500 => GAS :JMPN(outOfGas)
:JMP(readCode)
opORIGIN:
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
$ => A :MLOAD(txSrcOriginAddr)
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-2 => GAS :JMPN(outOfGas)
:JMP(readCode)
opCALLER:
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
$ => A :MLOAD(txSrcAddr)
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-2 => GAS :JMPN(outOfGas)
:JMP(readCode)
opCALLVALUE:
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
$ => A :MLOAD(txValue)
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-2 => GAS :JMPN(outOfGas)
:JMP(readCode)
; // TODO: Check when a contract is deployed with CREATE
opCALLDATALOAD:
%MAX_CNT_ARITH - CNT_ARITH - 64 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 66 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 200 :JMPN(outOfCounters)
SP - 1 => SP :JMPN(stackUnderflow)
$ => E :MLOAD(SP)
; Div operation with Arith
E :MSTORE(arithA)
32 :MSTORE(arithB)
:CALL(divARITH)
$ => B :MLOAD(arithRes1)
$ => A :MLOAD(arithRes2)
0 - A :JMPN(opCALLDATALOAD2)
SP => C
1024 + B => SP
$ => B :MLOAD(SP)
C => SP
B :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-3 => GAS :JMPN(outOfGas)
:JMP(readCode)
opCALLDATALOAD2:
SP => C
A => D
1024 + B => SP
$ => A :MLOAD(SP++)
:CALL(SHLarith)
A => B
32 - D => D
$ => A :MLOAD(SP)
:CALL(SHRarith)
C => SP
B + A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS - 3 => GAS :JMPN(outOfGas)
:JMP(readCode)
opCALLDATASIZE:
%MAX_CNT_STEPS - STEP - 120 :JMPN(outOfCounters)
$ => A :MLOAD(isCreateContract)
0 - A :JMPN(opCALLDATASIZEdep)
$ => B :MLOAD(txCalldataLen)
B :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-2 => GAS :JMPN(outOfGas)
:JMP(readCode)
opCALLDATASIZEdep:
0 :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-2 => GAS :JMPN(outOfGas)
:JMP(readCode)
; // TODO: if ins deployment only write 0
opCALLDATACOPY:
%MAX_CNT_ARITH - CNT_ARITH - 192 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 192 :JMPN(outOfCounters)
%MAX_CNT_MEM_ALIGN - CNT_MEM_ALIGN - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 200 :JMPN(outOfCounters)
SP - 3 :JMPN(stackUnderflow)
SP - 1 => SP
$ => E :MLOAD(SP--) ;destOffset - offset memory
$ => B :MLOAD(SP--) ;offset calldata
$ => C :MLOAD(SP) ;length calldata
E :MSTORE(lastMemOffset)
C :MSTORE(lastMemLength)
GAS - 3 => GAS :JMPN(outOfGas)
GAS - ${3*((C+31)/32)} => GAS :JMPN(outOfGas) ; Arith
:CALL(saveMem)
SP :MSTORE(SPw)
$ => A :MLOAD(txCalldataLen)
$ :LT,JMPC(opCALLDATACOPY0)
A + C => A
$ :LT,JMPC(opCALLDATACOPYX0)
:JMP(opCALLDATACOPYinit)
opCALLDATACOPYX0:
$ => C :MLOAD(txCalldataLen)
opCALLDATACOPYinit:
%MAX_CNT_ARITH - CNT_ARITH - 192 :JMPN(outOfCounters)
%MAX_CNT_BINARY - CNT_BINARY - 192 :JMPN(outOfCounters)
%MAX_CNT_MEM_ALIGN - CNT_MEM_ALIGN - 1 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 400 :JMPN(outOfCounters)
C - 1 :JMPN(opCALLDATACOPYcheckLen)
C - 32 :JMPN(opCALLDATACOPYfinal)
B :MSTORE(arithA)
32 :MSTORE(arithB)
:CALL(divARITH)
$ => D :MLOAD(arithRes2)
$ => A :MLOAD(arithRes1)
A :MSTORE(arithA)
1024 :MSTORE(arithB)
:CALL(addARITH)
$ => A :MLOAD(arithRes1)
A => SP
$ => A :MLOAD(SP)
:CALL(SHLarith)
A => C
$ => A :MLOAD(arithRes1)
A + 1 => SP
32 - D => D
$ => A :MLOAD(SP)
:CALL(SHRarith)
A + C :MSTORE(bytesToStore)
:CALL(MSTORE32)
$ => SP :MLOAD(SPw)
$ => C :MLOAD(SP) ;length
C - 32 => C
C :MSTORE(SP)
B + 32 => B
:JMP(opCALLDATACOPYinit)
opCALLDATACOPYfinal:
B :MSTORE(arithA)
32 :MSTORE(arithB)
:CALL(divARITH)
$ => D :MLOAD(arithRes2)
$ => B :MLOAD(arithRes1)
1024 :MSTORE(arithA)
B :MSTORE(arithB)
:CALL(addARITH)
$ => B :MLOAD(arithRes1)
B => SP
$ => A :MLOAD(SP)
:CALL(SHLarith)
$ => SP :MLOAD(SPw)
$ => C :MLOAD(SP) ;length
B + 1 => SP
C - 32 + D => D
D :JMPN(opCALLDATACOPYxor)
A => B
$ => A :MLOAD(SP)
32 - D => D
:CALL(SHRarith)
32 - C => D
:CALL(SHLarith)
B + A => A
A :MSTORE(bytesToStore)
:CALL(MSTOREX)
:JMP(opCALLDATACOPYcheckLen)
opCALLDATACOPY0:
32 - C :JMPN(opCALLDATACOPY320)
0 :MSTORE(bytesToStore)
:CALL(MSTOREX)
:JMP(opCALLDATACOPYend)
opCALLDATACOPY320:
0 :MSTORE(bytesToStore)
:CALL(MSTORE32)
C - 32 => C
:JMP(opCALLDATACOPY0)
opCALLDATACOPYxor:
32 - C => D
;SHR/SHL could be optimized
:CALL(SHRarith)
:CALL(SHLarith)
A :MSTORE(bytesToStore)
:CALL(MSTOREX)
opCALLDATACOPYcheckLen:
$ => C :MLOAD(lastMemLength)
$ => A :MLOAD(txCalldataLen)
C - A => C :JMPN(opCALLDATACOPYend)
:JMP(opCALLDATACOPY0)
opCALLDATACOPYend:
$ => SP :MLOAD(SPw)
:JMP(readCode)
opCODESIZE:
%MAX_CNT_POSEIDON_G - CNT_POSEIDON_G - 252 :JMPN(outOfCounters)
%MAX_CNT_STEPS - STEP - 200 :JMPN(outOfCounters)
$ => A :MLOAD(isCreateContract)
0 - A :JMPN(opCODESIZEdep)
$ => A :MLOAD(txDestAddr)
%SMT_KEY_SC_LENGTH => B
0 => C
$ => A :SLOAD
A :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-2 => GAS :JMPN(outOfGas)
:JMP(readCode)
opCODESIZEdep: ;//TODO: create/create2, constructor parameters, initBytcode vs deployed Bytecode
$ => B :MLOAD(txCalldataLen)
B :MSTORE(SP++)
1024 - SP :JMPN(stackOverflow)
GAS-2 => GAS :JMPN(outOfGas)
:JMP(readCode)
VAR GLOBAL memOffset
VAR GLOBAL remainingBytes
VAR GLOBAL previousValue
VAR GLOBAL codecopyHashId
VAR GLOBAL codecopyBytecodeLength
VAR GLOBAL memInteger
opCODECOPY: