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Updated gast costs

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This commit is contained in:
obscuren
2015-03-03 13:29:52 +01:00
parent ffa6b99ab6
commit fa831206c6
4 changed files with 24 additions and 25 deletions
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16
vm/vm.go
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@@ -931,9 +931,9 @@ func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCo
words := toWordSize(stack.data[stack.Len()-4])
gas.Add(gas, words.Mul(words, GasCopyWord))
case CREATE:
size := new(big.Int).Set(stack.data[stack.Len()-2])
gas.Add(gas, size.Mul(size, GasCreateByte))
newMemSize = calcMemSize(stack.data[stack.Len()-2], stack.data[stack.Len()-3])
case CALL, CALLCODE:
gas.Add(gas, stack.data[stack.Len()-1])
@@ -941,17 +941,16 @@ func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCo
if self.env.State().GetStateObject(stack.data[stack.Len()-2].Bytes()) == nil {
gas.Add(gas, GasCallNewAccount)
}
}
if len(stack.data[stack.Len()-3].Bytes()) > 0 {
gas.Add(gas, GasCallValueTransfer)
}
if len(stack.data[stack.Len()-3].Bytes()) > 0 {
gas.Add(gas, GasCallValueTransfer)
}
x := calcMemSize(stack.data[stack.Len()-6], stack.data[stack.Len()-7])
y := calcMemSize(stack.data[stack.Len()-4], stack.data[stack.Len()-5])
newMemSize = ethutil.BigMax(x, y)
newMemSize = calcMemSize(stack.data[stack.Len()-2], stack.data[stack.Len()-3])
}
if newMemSize.Cmp(ethutil.Big0) > 0 {
@@ -959,11 +958,6 @@ func (self *Vm) calculateGasAndSize(context *Context, caller ContextRef, op OpCo
newMemSize.Mul(newMemSizeWords, u256(32))
if newMemSize.Cmp(u256(int64(mem.Len()))) > 0 {
//memGasUsage := new(big.Int).Sub(newMemSize, u256(int64(mem.Len())))
//memGasUsage.Mul(GasMemWord, memGasUsage)
//memGasUsage.Div(memGasUsage, u256(32))
//Old: full_memory_gas_cost = W + floor(W*W / 1024), W = words in memory
oldSize := toWordSize(big.NewInt(int64(mem.Len())))
pow := new(big.Int).Exp(oldSize, ethutil.Big2, Zero)
linCoef := new(big.Int).Mul(oldSize, GasMemWord)