core: vm: refactor file structure

For support other vm types, this pr modified the core/vm file
structures.

1 files changed, 6 insertions, 6 deletions

diff --git a/core/vm/common.go b/core/vm/common.go
index 7702b2a86..6b8c4667b 100644
--- a/core/vm/common.go
+++ b/core/vm/common.go
@@ -24,7 +24,7 @@ import (
 )
 
 // calculates the memory size required for a step
-func calcMemSize(off, l *big.Int) *big.Int {
+func CalcMemSize(off, l *big.Int) *big.Int {
 	if l.Sign() == 0 {
 		return common.Big0
 	}
@@ -34,7 +34,7 @@ func calcMemSize(off, l *big.Int) *big.Int {
 
 // getData returns a slice from the data based on the start and size and pads
 // up to size with zero's. This function is overflow safe.
-func getData(data []byte, start uint64, size uint64) []byte {
+func GetData(data []byte, start uint64, size uint64) []byte {
 	length := uint64(len(data))
 	if start > length {
 		start = length
@@ -48,7 +48,7 @@ func getData(data []byte, start uint64, size uint64) []byte {
 
 // getDataBig returns a slice from the data based on the start and size and pads
 // up to size with zero's. This function is overflow safe.
-func getDataBig(data []byte, start *big.Int, size *big.Int) []byte {
+func GetDataBig(data []byte, start *big.Int, size *big.Int) []byte {
 	dlen := big.NewInt(int64(len(data)))
 
 	s := math.BigMin(start, dlen)
@@ -58,12 +58,12 @@ func getDataBig(data []byte, start *big.Int, size *big.Int) []byte {
 
 // bigUint64 returns the integer casted to a uint64 and returns whether it
 // overflowed in the process.
-func bigUint64(v *big.Int) (uint64, bool) {
+func BigUint64(v *big.Int) (uint64, bool) {
 	return v.Uint64(), v.BitLen() > 64
 }
 
 // toWordSize returns the ceiled word size required for memory expansion.
-func toWordSize(size uint64) uint64 {
+func ToWordSize(size uint64) uint64 {
 	if size > math.MaxUint64-31 {
 		return math.MaxUint64/32 + 1
 	}
@@ -71,7 +71,7 @@ func toWordSize(size uint64) uint64 {
 	return (size + 31) / 32
 }
 
-func allZero(b []byte) bool {
+func AllZero(b []byte) bool {
 	for _, byte := range b {
 		if byte != 0 {
 			return false