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authorJeffrey Wilcke <jeffrey@ethereum.org>2017-03-01 08:11:24 +0800
committerFelix Lange <fjl@users.noreply.github.com>2017-03-01 08:11:24 +0800
commit230cf2ec9142b6a8f421cb8873deb5df1566e89c (patch)
treeb437803c8d90384d8ecb68e8a180db384535c018 /cmd/evm/runner.go
parent7ff75ac2f2f8a62d52367271194aa7889a5b5c88 (diff)
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cmd/evm, core/asm: add EVM assembler (#3686)
The evm compile command implements a simple assembly language that compiles to EVM bytecode.
Diffstat (limited to 'cmd/evm/runner.go')
-rw-r--r--cmd/evm/runner.go145
1 files changed, 145 insertions, 0 deletions
diff --git a/cmd/evm/runner.go b/cmd/evm/runner.go
new file mode 100644
index 000000000..0bed46894
--- /dev/null
+++ b/cmd/evm/runner.go
@@ -0,0 +1,145 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+ "bytes"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "time"
+
+ goruntime "runtime"
+
+ "github.com/ethereum/go-ethereum/cmd/utils"
+ "github.com/ethereum/go-ethereum/common"
+ "github.com/ethereum/go-ethereum/core/state"
+ "github.com/ethereum/go-ethereum/core/vm"
+ "github.com/ethereum/go-ethereum/core/vm/runtime"
+ "github.com/ethereum/go-ethereum/ethdb"
+ "github.com/ethereum/go-ethereum/log"
+ cli "gopkg.in/urfave/cli.v1"
+)
+
+var runCommand = cli.Command{
+ Action: runCmd,
+ Name: "run",
+ Usage: "run arbitrary evm binary",
+ ArgsUsage: "<code>",
+ Description: `The run command runs arbitrary EVM code.`,
+}
+
+func runCmd(ctx *cli.Context) error {
+ glogger := log.NewGlogHandler(log.StreamHandler(os.Stderr, log.TerminalFormat(false)))
+ glogger.Verbosity(log.Lvl(ctx.GlobalInt(VerbosityFlag.Name)))
+ log.Root().SetHandler(glogger)
+
+ var (
+ db, _ = ethdb.NewMemDatabase()
+ statedb, _ = state.New(common.Hash{}, db)
+ sender = common.StringToAddress("sender")
+ logger = vm.NewStructLogger(nil)
+ tstart = time.Now()
+ )
+ statedb.CreateAccount(sender)
+
+ var (
+ code []byte
+ ret []byte
+ err error
+ )
+ if ctx.GlobalString(CodeFlag.Name) != "" {
+ code = common.Hex2Bytes(ctx.GlobalString(CodeFlag.Name))
+ } else {
+ var hexcode []byte
+ if ctx.GlobalString(CodeFileFlag.Name) != "" {
+ var err error
+ hexcode, err = ioutil.ReadFile(ctx.GlobalString(CodeFileFlag.Name))
+ if err != nil {
+ fmt.Printf("Could not load code from file: %v\n", err)
+ os.Exit(1)
+ }
+ } else {
+ var err error
+ hexcode, err = ioutil.ReadAll(os.Stdin)
+ if err != nil {
+ fmt.Printf("Could not load code from stdin: %v\n", err)
+ os.Exit(1)
+ }
+ }
+ code = common.Hex2Bytes(string(bytes.TrimRight(hexcode, "\n")))
+ }
+
+ if ctx.GlobalBool(CreateFlag.Name) {
+ input := append(code, common.Hex2Bytes(ctx.GlobalString(InputFlag.Name))...)
+ ret, _, err = runtime.Create(input, &runtime.Config{
+ Origin: sender,
+ State: statedb,
+ GasLimit: ctx.GlobalUint64(GasFlag.Name),
+ GasPrice: utils.GlobalBig(ctx, PriceFlag.Name),
+ Value: utils.GlobalBig(ctx, ValueFlag.Name),
+ EVMConfig: vm.Config{
+ Tracer: logger,
+ Debug: ctx.GlobalBool(DebugFlag.Name),
+ DisableGasMetering: ctx.GlobalBool(DisableGasMeteringFlag.Name),
+ },
+ })
+ } else {
+ receiver := common.StringToAddress("receiver")
+ statedb.SetCode(receiver, code)
+
+ ret, err = runtime.Call(receiver, common.Hex2Bytes(ctx.GlobalString(InputFlag.Name)), &runtime.Config{
+ Origin: sender,
+ State: statedb,
+ GasLimit: ctx.GlobalUint64(GasFlag.Name),
+ GasPrice: utils.GlobalBig(ctx, PriceFlag.Name),
+ Value: utils.GlobalBig(ctx, ValueFlag.Name),
+ EVMConfig: vm.Config{
+ Tracer: logger,
+ Debug: ctx.GlobalBool(DebugFlag.Name),
+ DisableGasMetering: ctx.GlobalBool(DisableGasMeteringFlag.Name),
+ },
+ })
+ }
+ vmdone := time.Since(tstart)
+
+ if ctx.GlobalBool(DumpFlag.Name) {
+ statedb.Commit(true)
+ fmt.Println(string(statedb.Dump()))
+ }
+ vm.StdErrFormat(logger.StructLogs())
+
+ if ctx.GlobalBool(SysStatFlag.Name) {
+ var mem goruntime.MemStats
+ goruntime.ReadMemStats(&mem)
+ fmt.Printf("vm took %v\n", vmdone)
+ fmt.Printf(`alloc: %d
+tot alloc: %d
+no. malloc: %d
+heap alloc: %d
+heap objs: %d
+num gc: %d
+`, mem.Alloc, mem.TotalAlloc, mem.Mallocs, mem.HeapAlloc, mem.HeapObjects, mem.NumGC)
+ }
+
+ fmt.Printf("OUT: 0x%x", ret)
+ if err != nil {
+ fmt.Printf(" error: %v", err)
+ }
+ fmt.Println()
+ return nil
+}