cerc-io/plugeth
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Fixed EXP gas

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This commit is contained in:
obscuren 2014-12-01 22:05:38 +01:00
parent a22056db59
commit a052357872
3 changed files with 11 additions and 22 deletions
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6
ethutil/big.go
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@ -62,14 +62,14 @@ func S256(x *big.Int) *big.Int {
}
}
func FirstBitSet(v *big.Int) *big.Int {
func FirstBitSet(v *big.Int) int {
for i := 0; i < v.BitLen(); i++ {
if v.Bit(i) > 0 {
return big.NewInt(int64(i))
return i
}
}
return big.NewInt(int64(v.BitLen()))
return v.BitLen()
}
// Big to bytes

14
tests/vm/gh_test.go
View File

@ -2,7 +2,6 @@ package vm
import (
"bytes"
"fmt"
"testing"
"github.com/ethereum/go-ethereum/ethutil"
@ -45,7 +44,6 @@ func RunVmTest(p string, t *testing.T) {
helper.CreateFileTests(t, p, &tests)
for name, test := range tests {
fmt.Println(name)
state := state.New(helper.NewTrie())
for addr, account := range test.Pre {
obj := StateObjectFromAccount(addr, account)
@ -85,20 +83,10 @@ func RunVmTest(p string, t *testing.T) {
// I've created a new function for each tests so it's easier to identify where the problem lies if any of them fail.
func TestVMArithmetic(t *testing.T) {
//helper.Logger.SetLogLevel(5)
const fn = "../files/vmtests/vmArithmeticTest.json"
RunVmTest(fn, t)
}
/*
deleted?
func TestVMSystemOperation(t *testing.T) {
helper.Logger.SetLogLevel(5)
const fn = "../files/vmtests/vmSystemOperationsTest.json"
RunVmTest(fn, t)
}
*/
func TestBitwiseLogicOperation(t *testing.T) {
const fn = "../files/vmtests/vmBitwiseLogicOperationTest.json"
RunVmTest(fn, t)
@ -126,7 +114,7 @@ func TestPushDupSwap(t *testing.T) {
}
func TestVMSha3(t *testing.T) {
helper.Logger.SetLogLevel(5)
//helper.Logger.SetLogLevel(5)
const fn = "../files/vmtests/vmSha3Test.json"
RunVmTest(fn, t)
}

13
vm/vm_debug.go
View File

@ -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)