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authorobscuren <geffobscura@gmail.com>2015-06-10 16:44:46 +0800
committerobscuren <geffobscura@gmail.com>2015-06-10 16:44:46 +0800
commit468501cb860508af55e1fcd586e1498df0a2d984 (patch)
tree1831ad55bcc0f6bec7d94947609ae654c61fcdf8
parent7e58949c3f4c67960fb0422f49f3e513a388cc5d (diff)
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core/vm: changed program counter to uint64
-rw-r--r--core/vm/context.go8
-rw-r--r--core/vm/vm.go18
2 files changed, 13 insertions, 13 deletions
diff --git a/core/vm/context.go b/core/vm/context.go
index de03f84f0..e33324b53 100644
--- a/core/vm/context.go
+++ b/core/vm/context.go
@@ -49,13 +49,13 @@ func NewContext(caller ContextRef, object ContextRef, value, gas, price *big.Int
return c
}
-func (c *Context) GetOp(n *big.Int) OpCode {
+func (c *Context) GetOp(n uint64) OpCode {
return OpCode(c.GetByte(n))
}
-func (c *Context) GetByte(n *big.Int) byte {
- if n.Cmp(big.NewInt(int64(len(c.Code)))) < 0 {
- return c.Code[n.Int64()]
+func (c *Context) GetByte(n uint64) byte {
+ if n < uint64(len(c.Code)) {
+ return c.Code[n]
}
return 0
diff --git a/core/vm/vm.go b/core/vm/vm.go
index 2bd950385..ed4157178 100644
--- a/core/vm/vm.go
+++ b/core/vm/vm.go
@@ -81,17 +81,17 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
codehash = crypto.Sha3Hash(code)
mem = NewMemory()
stack = newStack()
- pc = new(big.Int)
+ pc = uint64(0)
statedb = self.env.State()
- jump = func(from *big.Int, to *big.Int) error {
+ jump = func(from uint64, to *big.Int) error {
if !context.jumpdests.has(codehash, code, to) {
- nop := context.GetOp(to)
+ nop := context.GetOp(to.Uint64())
return fmt.Errorf("invalid jump destination (%v) %v", nop, to)
}
self.Printf(" ~> %v", to)
- pc = to
+ pc = to.Uint64()
self.Endl()
@@ -519,11 +519,11 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
stack.push(self.env.GasLimit())
case PUSH1, PUSH2, PUSH3, PUSH4, PUSH5, PUSH6, PUSH7, PUSH8, PUSH9, PUSH10, PUSH11, PUSH12, PUSH13, PUSH14, PUSH15, PUSH16, PUSH17, PUSH18, PUSH19, PUSH20, PUSH21, PUSH22, PUSH23, PUSH24, PUSH25, PUSH26, PUSH27, PUSH28, PUSH29, PUSH30, PUSH31, PUSH32:
- a := big.NewInt(int64(op - PUSH1 + 1))
- byts := getData(code, new(big.Int).Add(pc, big.NewInt(1)), a)
+ size := uint64(op - PUSH1 + 1)
+ byts := getData(code, new(big.Int).SetUint64(pc+1), new(big.Int).SetUint64(size))
// push value to stack
stack.push(common.Bytes2Big(byts))
- pc.Add(pc, a)
+ pc += size
self.Printf(" => 0x%x", byts)
case POP:
@@ -603,7 +603,7 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
case JUMPDEST:
case PC:
- stack.push(pc)
+ stack.push(new(big.Int).SetUint64(pc))
case MSIZE:
stack.push(big.NewInt(int64(mem.Len())))
case GAS:
@@ -708,7 +708,7 @@ func (self *Vm) Run(context *Context, callData []byte) (ret []byte, err error) {
return nil, fmt.Errorf("Invalid opcode %x", op)
}
- pc.Add(pc, One)
+ pc++
self.Endl()
}