cmd/evm: fix some issues with the evm run command (#28109)

* cmd/evm: improve flags handling

This fixes some issues with flags in cmd/evm. The supported flags did not
actually show up in help output because they weren't categorized. I'm also
adding the VM-related flags to the run command here so they can be given
after the subcommand name. So it can be run like this now:

   ./evm run --code 6001 --debug

* cmd/evm: enable all forks by default in run command

The default genesis was just empty with no forks at all, which is annoying because
contracts will be relying on opcodes introduced in a fork. So this changes the default to
have all forks enabled.

* core/asm: fix some issues in the assembler

This fixes minor bugs in the old assembler:

- It is now possible to have comments on the same line as an instruction.
- Errors for invalid numbers in the jump instruction are reported better
- Line numbers in errors were off by one

cmd/evm/blockrunner.go

@@ -25,7 +25,6 @@ import (
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/eth/tracers/logger"
-	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/tests"
 	"github.com/urfave/cli/v2"
 )
@@ -41,10 +40,7 @@ func blockTestCmd(ctx *cli.Context) error {
 	if len(ctx.Args().First()) == 0 {
 		return errors.New("path-to-test argument required")
 	}
-	// Configure the go-ethereum logger
-	glogger := log.NewGlogHandler(log.StreamHandler(os.Stderr, log.TerminalFormat(false)))
-	glogger.Verbosity(log.Lvl(ctx.Int(VerbosityFlag.Name)))
-	log.Root().SetHandler(glogger)
+
 	var tracer vm.EVMLogger
 	// Configure the EVM logger
 	if ctx.Bool(MachineFlag.Name) {

cmd/evm/main.go

@@ -23,107 +23,116 @@ import (
 	"os"
 
 	"github.com/ethereum/go-ethereum/cmd/evm/internal/t8ntool"
+	"github.com/ethereum/go-ethereum/internal/debug"
 	"github.com/ethereum/go-ethereum/internal/flags"
 	"github.com/urfave/cli/v2"
 )
 
 var (
 	DebugFlag = &cli.BoolFlag{
-		Name:  "debug",
-		Usage: "output full trace logs",
-	}
-	MemProfileFlag = &cli.StringFlag{
-		Name:  "memprofile",
-		Usage: "creates a memory profile at the given path",
-	}
-	CPUProfileFlag = &cli.StringFlag{
-		Name:  "cpuprofile",
-		Usage: "creates a CPU profile at the given path",
+		Name:     "debug",
+		Usage:    "output full trace logs",
+		Category: flags.VMCategory,
 	}
 	StatDumpFlag = &cli.BoolFlag{
-		Name:  "statdump",
-		Usage: "displays stack and heap memory information",
+		Name:     "statdump",
+		Usage:    "displays stack and heap memory information",
+		Category: flags.VMCategory,
 	}
 	CodeFlag = &cli.StringFlag{
-		Name:  "code",
-		Usage: "EVM code",
+		Name:     "code",
+		Usage:    "EVM code",
+		Category: flags.VMCategory,
 	}
 	CodeFileFlag = &cli.StringFlag{
-		Name:  "codefile",
-		Usage: "File containing EVM code. If '-' is specified, code is read from stdin ",
+		Name:     "codefile",
+		Usage:    "File containing EVM code. If '-' is specified, code is read from stdin ",
+		Category: flags.VMCategory,
 	}
 	GasFlag = &cli.Uint64Flag{
-		Name:  "gas",
-		Usage: "gas limit for the evm",
-		Value: 10000000000,
+		Name:     "gas",
+		Usage:    "gas limit for the evm",
+		Value:    10000000000,
+		Category: flags.VMCategory,
 	}
 	PriceFlag = &flags.BigFlag{
-		Name:  "price",
-		Usage: "price set for the evm",
-		Value: new(big.Int),
+		Name:     "price",
+		Usage:    "price set for the evm",
+		Value:    new(big.Int),
+		Category: flags.VMCategory,
 	}
 	ValueFlag = &flags.BigFlag{
-		Name:  "value",
-		Usage: "value set for the evm",
-		Value: new(big.Int),
+		Name:     "value",
+		Usage:    "value set for the evm",
+		Value:    new(big.Int),
+		Category: flags.VMCategory,
 	}
 	DumpFlag = &cli.BoolFlag{
-		Name:  "dump",
-		Usage: "dumps the state after the run",
+		Name:     "dump",
+		Usage:    "dumps the state after the run",
+		Category: flags.VMCategory,
 	}
 	InputFlag = &cli.StringFlag{
-		Name:  "input",
-		Usage: "input for the EVM",
+		Name:     "input",
+		Usage:    "input for the EVM",
+		Category: flags.VMCategory,
 	}
 	InputFileFlag = &cli.StringFlag{
-		Name:  "inputfile",
-		Usage: "file containing input for the EVM",
-	}
-	VerbosityFlag = &cli.IntFlag{
-		Name:  "verbosity",
-		Usage: "sets the verbosity level",
+		Name:     "inputfile",
+		Usage:    "file containing input for the EVM",
+		Category: flags.VMCategory,
 	}
 	BenchFlag = &cli.BoolFlag{
-		Name:  "bench",
-		Usage: "benchmark the execution",
+		Name:     "bench",
+		Usage:    "benchmark the execution",
+		Category: flags.VMCategory,
 	}
 	CreateFlag = &cli.BoolFlag{
-		Name:  "create",
-		Usage: "indicates the action should be create rather than call",
+		Name:     "create",
+		Usage:    "indicates the action should be create rather than call",
+		Category: flags.VMCategory,
 	}
 	GenesisFlag = &cli.StringFlag{
-		Name:  "prestate",
-		Usage: "JSON file with prestate (genesis) config",
+		Name:     "prestate",
+		Usage:    "JSON file with prestate (genesis) config",
+		Category: flags.VMCategory,
 	}
 	MachineFlag = &cli.BoolFlag{
-		Name:  "json",
-		Usage: "output trace logs in machine readable format (json)",
+		Name:     "json",
+		Usage:    "output trace logs in machine readable format (json)",
+		Category: flags.VMCategory,
 	}
 	SenderFlag = &cli.StringFlag{
-		Name:  "sender",
-		Usage: "The transaction origin",
+		Name:     "sender",
+		Usage:    "The transaction origin",
+		Category: flags.VMCategory,
 	}
 	ReceiverFlag = &cli.StringFlag{
-		Name:  "receiver",
-		Usage: "The transaction receiver (execution context)",
+		Name:     "receiver",
+		Usage:    "The transaction receiver (execution context)",
+		Category: flags.VMCategory,
 	}
 	DisableMemoryFlag = &cli.BoolFlag{
-		Name:  "nomemory",
-		Value: true,
-		Usage: "disable memory output",
+		Name:     "nomemory",
+		Value:    true,
+		Usage:    "disable memory output",
+		Category: flags.VMCategory,
 	}
 	DisableStackFlag = &cli.BoolFlag{
-		Name:  "nostack",
-		Usage: "disable stack output",
+		Name:     "nostack",
+		Usage:    "disable stack output",
+		Category: flags.VMCategory,
 	}
 	DisableStorageFlag = &cli.BoolFlag{
-		Name:  "nostorage",
-		Usage: "disable storage output",
+		Name:     "nostorage",
+		Usage:    "disable storage output",
+		Category: flags.VMCategory,
 	}
 	DisableReturnDataFlag = &cli.BoolFlag{
-		Name:  "noreturndata",
-		Value: true,
-		Usage: "enable return data output",
+		Name:     "noreturndata",
+		Value:    true,
+		Usage:    "enable return data output",
+		Category: flags.VMCategory,
 	}
 )
 
@@ -183,34 +192,38 @@ var blockBuilderCommand = &cli.Command{
 	},
 }
 
+// vmFlags contains flags related to running the EVM.
+var vmFlags = []cli.Flag{
+	CodeFlag,
+	CodeFileFlag,
+	CreateFlag,
+	GasFlag,
+	PriceFlag,
+	ValueFlag,
+	InputFlag,
+	InputFileFlag,
+	GenesisFlag,
+	SenderFlag,
+	ReceiverFlag,
+}
+
+// traceFlags contains flags that configure tracing output.
+var traceFlags = []cli.Flag{
+	BenchFlag,
+	DebugFlag,
+	DumpFlag,
+	MachineFlag,
+	StatDumpFlag,
+	DisableMemoryFlag,
+	DisableStackFlag,
+	DisableStorageFlag,
+	DisableReturnDataFlag,
+}
+
 var app = flags.NewApp("the evm command line interface")
 
 func init() {
-	app.Flags = []cli.Flag{
-		BenchFlag,
-		CreateFlag,
-		DebugFlag,
-		VerbosityFlag,
-		CodeFlag,
-		CodeFileFlag,
-		GasFlag,
-		PriceFlag,
-		ValueFlag,
-		DumpFlag,
-		InputFlag,
-		InputFileFlag,
-		MemProfileFlag,
-		CPUProfileFlag,
-		StatDumpFlag,
-		GenesisFlag,
-		MachineFlag,
-		SenderFlag,
-		ReceiverFlag,
-		DisableMemoryFlag,
-		DisableStackFlag,
-		DisableStorageFlag,
-		DisableReturnDataFlag,
-	}
+	app.Flags = flags.Merge(vmFlags, traceFlags, debug.Flags)
 	app.Commands = []*cli.Command{
 		compileCommand,
 		disasmCommand,
@@ -221,6 +234,14 @@ func init() {
 		transactionCommand,
 		blockBuilderCommand,
 	}
+	app.Before = func(ctx *cli.Context) error {
+		flags.MigrateGlobalFlags(ctx)
+		return debug.Setup(ctx)
+	}
+	app.After = func(ctx *cli.Context) error {
+		debug.Exit()
+		return nil
+	}
 }
 
 func main() {