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| author | obscuren <geffobscura@gmail.com> | 2014-12-02 05:05:38 +0800 |
|---|---|---|
| committer | obscuren <geffobscura@gmail.com> | 2014-12-02 05:05:38 +0800 |
| commit | a052357872217d5e99e7ee1a7a4b524b53addcdd (patch) | |
| tree | e6b22d92ca0939a2d0a44bc04c6d83c600de23e7 /vm | |
| parent | a22056db5988bfa2b1354e0092eabb734c30701c (diff) | |
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Fixed EXP gas
Diffstat (limited to 'vm')
| -rw-r--r-- | vm/vm_debug.go | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/vm/vm_debug.go b/vm/vm_debug.go index 4daa3ab5b..ea94987d1 100644 --- a/vm/vm_debug.go +++ b/vm/vm_debug.go @@ -172,12 +172,13 @@ func (self *DebugVm) RunClosure(closure *Closure) (ret []byte, err error) { case EXP: require(2) - expGas := ethutil.FirstBitSet(stack.data[stack.Len()-2]) - expGas.Div(expGas, u256(8)) - expGas.Sub(u256(32), expGas) - expGas.Add(expGas, u256(1)) - - gas.Set(expGas) + exp := new(big.Int).Set(stack.data[stack.Len()-2]) + nbytes := 0 + for exp.Cmp(ethutil.Big0) > 0 { + nbytes += 1 + exp.Rsh(exp, 8) + } + gas.Set(big.NewInt(int64(nbytes + 1))) // Gas only case STOP: gas.Set(ethutil.Big0) |