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Fix address endianess and BLOCKHASH implementation

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This commit is contained in:
Paweł Bylica 2015-01-15 17:26:23 +01:00
parent 548c9aef82
commit 52b5f3c6d7
1 changed files with 28 additions and 16 deletions
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42
vm/vm_jit.go
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@ -2,10 +2,6 @@
package vm
import "math/big"
import "github.com/ethereum/go-ethereum/crypto"
import "github.com/ethereum/go-ethereum/state"
/*
#include "../evmjit/libevmjit/interface.h"
#include <stdlib.h>
@ -14,11 +10,14 @@ import "github.com/ethereum/go-ethereum/state"
*/
import "C"
import "unsafe"
//import "fmt"
import "reflect"
import "errors"
import (
"errors"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/state"
"math/big"
"reflect"
"unsafe"
)
type JitVm struct {
env Environment
@ -62,7 +61,7 @@ func hash2llvm(h []byte) i256 {
}
func llvm2hash(m *i256) []byte {
hash := make([]byte, len(m))
hash := make([]byte, len(m)) // TODO: Use C.GoBytes
hdr := reflect.SliceHeader{
Data: uintptr(unsafe.Pointer(m)),
Len: int(len(m)),
@ -72,6 +71,12 @@ func llvm2hash(m *i256) []byte {
return hash
}
func address2llvm(addr []byte) i256 {
n := hash2llvm(addr)
bswap(&n)
return n
}
func bswap(m *i256) *i256 {
for i, l := 0, len(m); i < l/2; i++ {
m[i], m[l-i-1] = m[l-i-1], m[i]
@ -135,12 +140,12 @@ func (self *JitVm) Run(me, caller ContextRef, code []byte, value, gas, price *bi
var data RuntimeData
data.elems[Gas] = big2llvm(gas)
data.elems[address] = hash2llvm(self.me.Address())
data.elems[Caller] = hash2llvm(caller.Address())
data.elems[Origin] = hash2llvm(self.env.Origin())
data.elems[address] = address2llvm(self.me.Address())
data.elems[Caller] = address2llvm(caller.Address())
data.elems[Origin] = address2llvm(self.env.Origin())
data.elems[CallValue] = big2llvm(value)
data.elems[CallDataSize] = big2llvm(big.NewInt(int64(len(callData)))) // TODO: Keep call data size as i64
data.elems[CoinBase] = hash2llvm(self.env.Coinbase())
data.elems[CoinBase] = address2llvm(self.env.Coinbase())
data.elems[TimeStamp] = big2llvm(big.NewInt(self.env.Time())) // TODO: Keep timestamp as i64
data.elems[Number] = big2llvm(self.env.BlockNumber())
data.elems[Difficulty] = big2llvm(self.env.Difficulty())
@ -228,9 +233,16 @@ func env_balance(_vm unsafe.Pointer, _addr unsafe.Pointer, _result unsafe.Pointe
func env_blockhash(_vm unsafe.Pointer, _number unsafe.Pointer, _result unsafe.Pointer) {
vm := (*JitVm)(_vm)
number := llvm2big((*i256)(_number))
hash := vm.Env().GetHash(uint64(number.Int64()))
result := (*i256)(_result)
currNumber := vm.Env().BlockNumber()
limit := big.NewInt(0).Sub(currNumber, big.NewInt(256))
if number.Cmp(limit) >= 0 && number.Cmp(currNumber) < 0 {
hash := vm.Env().GetHash(uint64(number.Int64()))
*result = hash2llvm(hash)
} else {
*result = i256{}
}
}
//export env_call