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76 lines
2.1 KiB
76 lines
2.1 KiB
// Copyright 2024 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package vm
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import (
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"testing"
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"github.com/ethereum/go-ethereum/common"
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)
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func TestEOFAnalysis(t *testing.T) {
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tests := []struct {
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code []byte
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exp byte
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which int
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}{
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{[]byte{byte(RJUMP), 0x01, 0x01, 0x01}, 0b0000_0110, 0},
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{[]byte{byte(RJUMPI), byte(RJUMP), byte(RJUMP), byte(RJUMPI)}, 0b0011_0110, 0},
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{[]byte{byte(RJUMPV), 0x02, byte(RJUMP), 0x00, byte(RJUMPI), 0x00}, 0b0011_1110, 0},
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}
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for i, test := range tests {
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ret := eofCodeBitmap(test.code)
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if ret[test.which] != test.exp {
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t.Fatalf("test %d: expected %x, got %02x", i, test.exp, ret[test.which])
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}
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}
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}
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func BenchmarkJumpdestOpEOFAnalysis(bench *testing.B) {
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var op OpCode
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bencher := func(b *testing.B) {
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code := make([]byte, analysisCodeSize)
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b.SetBytes(analysisCodeSize)
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for i := range code {
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code[i] = byte(op)
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}
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bits := make(bitvec, len(code)/8+1+4)
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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clear(bits)
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eofCodeBitmapInternal(code, bits)
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}
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}
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for op = PUSH1; op <= PUSH32; op++ {
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bench.Run(op.String(), bencher)
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}
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op = JUMPDEST
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bench.Run(op.String(), bencher)
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op = STOP
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bench.Run(op.String(), bencher)
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op = RJUMPV
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bench.Run(op.String(), bencher)
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op = EOFCREATE
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bench.Run(op.String(), bencher)
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}
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func FuzzCodeAnalysis(f *testing.F) {
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f.Add(common.FromHex("5e30303030"))
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f.Fuzz(func(t *testing.T, data []byte) {
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eofCodeBitmap(data)
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})
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}
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