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* EXT- CODECOPY, CODESIZE
This commit is contained in:
obscuren
2014-09-08 00:49:25 +02:00
parent 0b6b6b52fe
commit a63b74e345
2 changed files with 59 additions and 24 deletions
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34
ethvm/vm.go
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@@ -197,6 +197,10 @@ func (self *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
require(3)
newMemSize = stack.Peek().Uint64() + stack.data[stack.Len()-3].Uint64()
case EXTCODECOPY:
require(4)
newMemSize = stack.data[stack.Len()-1].Uint64() + stack.data[stack.Len()-4].Uint64()
case CALL:
require(7)
gas.Set(GasCall)
@@ -550,14 +554,32 @@ func (self *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
code := closure.Args[cOff : cOff+l]
mem.Set(mOff, l, code)
case CODESIZE:
l := big.NewInt(int64(len(closure.Code)))
case CODESIZE, EXTCODESIZE:
var code []byte
if op == EXTCODECOPY {
addr := stack.Pop().Bytes()
code = self.env.State().GetCode(addr)
} else {
code = closure.Code
}
l := big.NewInt(int64(len(code)))
stack.Push(l)
self.Printf(" => %d", l)
case CODECOPY:
case CODECOPY, EXTCODECOPY:
var code []byte
if op == EXTCODECOPY {
addr := stack.Pop().Bytes()
code = self.env.State().GetCode(addr)
} else {
code = closure.Code
}
var (
size = int64(len(closure.Code))
size = int64(len(code))
mOff = stack.Pop().Int64()
cOff = stack.Pop().Int64()
l = stack.Pop().Int64()
@@ -570,9 +592,9 @@ func (self *Vm) RunClosure(closure *Closure) (ret []byte, err error) {
l = 0
}
code := closure.Code[cOff : cOff+l]
codeCopy := code[cOff : cOff+l]
mem.Set(mOff, l, code)
mem.Set(mOff, l, codeCopy)
case GASPRICE:
stack.Push(closure.Price)