eth/tracer: extend create2 (#18318)

* eth/tracer: extend create2

* eth/tracers: fix create2-flaw in prestate_tracer

* eth/tracers: fix test

* eth/tracers: update assets

1 files changed, 22 insertions, 0 deletions

diff --git a/eth/tracers/tracer.go b/eth/tracers/tracer.go
index 3533a831f..9d6701868 100644
--- a/eth/tracers/tracer.go
+++ b/eth/tracers/tracer.go
@@ -367,6 +367,28 @@ func New(code string) (*Tracer, error) {
 		copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:])
 		return 1
 	})
+	tracer.vm.PushGlobalGoFunction("toContract2", func(ctx *duktape.Context) int {
+		var from common.Address
+		if ptr, size := ctx.GetBuffer(-3); ptr != nil {
+			from = common.BytesToAddress(makeSlice(ptr, size))
+		} else {
+			from = common.HexToAddress(ctx.GetString(-3))
+		}
+		// Retrieve salt hex string from js stack
+		salt := common.HexToHash(ctx.GetString(-2))
+		// Retrieve code slice from js stack
+		var code []byte
+		if ptr, size := ctx.GetBuffer(-1); ptr != nil {
+			code = common.CopyBytes(makeSlice(ptr, size))
+		} else {
+			code = common.FromHex(ctx.GetString(-1))
+		}
+		codeHash := crypto.Keccak256(code)
+		ctx.Pop3()
+		contract := crypto.CreateAddress2(from, salt, codeHash)
+		copy(makeSlice(ctx.PushFixedBuffer(20), 20), contract[:])
+		return 1
+	})
 	tracer.vm.PushGlobalGoFunction("isPrecompiled", func(ctx *duktape.Context) int {
 		_, ok := vm.PrecompiledContractsByzantium[common.BytesToAddress(popSlice(ctx))]
 		ctx.PushBoolean(ok)