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https://gitlab.com/pulsechaincom/erigon-pulse.git
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5c8fe28b72
* common: remove CurrencyToString Move denomination values to params instead. * common: delete dead code * common: move big integer operations to common/math This commit consolidates all big integer operations into common/math and adds tests and documentation. There should be no change in semantics for BigPow, BigMin, BigMax, S256, U256, Exp and their behaviour is now locked in by tests. The BigD, BytesToBig and Bytes2Big functions don't provide additional value, all uses are replaced by new(big.Int).SetBytes(). BigToBytes is now called PaddedBigBytes, its minimum output size parameter is now specified as the number of bytes instead of bits. The single use of this function is in the EVM's MSTORE instruction. Big and String2Big are replaced by ParseBig, which is slightly stricter. It previously accepted leading zeros for hexadecimal inputs but treated decimal inputs as octal if a leading zero digit was present. ParseUint64 is used in places where String2Big was used to decode a uint64. The new functions MustParseBig and MustParseUint64 are now used in many places where parsing errors were previously ignored. * common: delete unused big integer variables * accounts/abi: replace uses of BytesToBig with use of encoding/binary * common: remove BytesToBig * common: remove Bytes2Big * common: remove BigTrue * cmd/utils: add BigFlag and use it for error-checked integer flags While here, remove environment variable processing for DirectoryFlag because we don't use it. * core: add missing error checks in genesis block parser * common: remove String2Big * cmd/evm: use utils.BigFlag * common/math: check for 256 bit overflow in ParseBig This is supposed to prevent silent overflow/truncation of values in the genesis block JSON. Without this check, a genesis block that set a balance larger than 256 bits would lead to weird behaviour in the VM. * cmd/utils: fixup import
69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
package vm
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common/math"
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)
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func memorySha3(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(0), stack.Back(1))
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}
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func memoryCalldataCopy(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(0), stack.Back(2))
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}
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func memoryCodeCopy(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(0), stack.Back(2))
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}
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func memoryExtCodeCopy(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(1), stack.Back(3))
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}
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func memoryMLoad(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(0), big.NewInt(32))
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}
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func memoryMStore8(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(0), big.NewInt(1))
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}
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func memoryMStore(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(0), big.NewInt(32))
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}
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func memoryCreate(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(1), stack.Back(2))
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}
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func memoryCall(stack *Stack) *big.Int {
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x := calcMemSize(stack.Back(5), stack.Back(6))
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y := calcMemSize(stack.Back(3), stack.Back(4))
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return math.BigMax(x, y)
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}
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func memoryCallCode(stack *Stack) *big.Int {
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x := calcMemSize(stack.Back(5), stack.Back(6))
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y := calcMemSize(stack.Back(3), stack.Back(4))
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return math.BigMax(x, y)
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}
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func memoryDelegateCall(stack *Stack) *big.Int {
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x := calcMemSize(stack.Back(4), stack.Back(5))
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y := calcMemSize(stack.Back(2), stack.Back(3))
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return math.BigMax(x, y)
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}
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func memoryReturn(stack *Stack) *big.Int {
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return calcMemSize(stack.Back(0), stack.Back(1))
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}
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func memoryLog(stack *Stack) *big.Int {
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mSize, mStart := stack.Back(1), stack.Back(0)
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return calcMemSize(mStart, mSize)
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}
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