github.com/FusionFoundation/efsn/v4@v4.2.0/core/vm/analysis_test.go (about)

     1  // Copyright 2017 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package vm
    18  
    19  import (
    20  	"math/bits"
    21  	"testing"
    22  
    23  	"github.com/FusionFoundation/efsn/v4/crypto"
    24  )
    25  
    26  func TestJumpDestAnalysis(t *testing.T) {
    27  	tests := []struct {
    28  		code  []byte
    29  		exp   byte
    30  		which int
    31  	}{
    32  		{[]byte{byte(PUSH1), 0x01, 0x01, 0x01}, 0b0000_0010, 0},
    33  		{[]byte{byte(PUSH1), byte(PUSH1), byte(PUSH1), byte(PUSH1)}, 0b0000_1010, 0},
    34  		{[]byte{0x00, byte(PUSH1), 0x00, byte(PUSH1), 0x00, byte(PUSH1), 0x00, byte(PUSH1)}, 0b0101_0100, 0},
    35  		{[]byte{byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), byte(PUSH8), 0x01, 0x01, 0x01}, bits.Reverse8(0x7F), 0},
    36  		{[]byte{byte(PUSH8), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0b0000_0001, 1},
    37  		{[]byte{0x01, 0x01, 0x01, 0x01, 0x01, byte(PUSH2), byte(PUSH2), byte(PUSH2), 0x01, 0x01, 0x01}, 0b1100_0000, 0},
    38  		{[]byte{0x01, 0x01, 0x01, 0x01, 0x01, byte(PUSH2), 0x01, 0x01, 0x01, 0x01, 0x01}, 0b0000_0000, 1},
    39  		{[]byte{byte(PUSH3), 0x01, 0x01, 0x01, byte(PUSH1), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0b0010_1110, 0},
    40  		{[]byte{byte(PUSH3), 0x01, 0x01, 0x01, byte(PUSH1), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0b0000_0000, 1},
    41  		{[]byte{0x01, byte(PUSH8), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0b1111_1100, 0},
    42  		{[]byte{0x01, byte(PUSH8), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0b0000_0011, 1},
    43  		{[]byte{byte(PUSH16), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0b1111_1110, 0},
    44  		{[]byte{byte(PUSH16), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0b1111_1111, 1},
    45  		{[]byte{byte(PUSH16), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, 0b0000_0001, 2},
    46  		{[]byte{byte(PUSH8), 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, byte(PUSH1), 0x01}, 0b1111_1110, 0},
    47  		{[]byte{byte(PUSH8), 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, byte(PUSH1), 0x01}, 0b0000_0101, 1},
    48  		{[]byte{byte(PUSH32)}, 0b1111_1110, 0},
    49  		{[]byte{byte(PUSH32)}, 0b1111_1111, 1},
    50  		{[]byte{byte(PUSH32)}, 0b1111_1111, 2},
    51  		{[]byte{byte(PUSH32)}, 0b1111_1111, 3},
    52  		{[]byte{byte(PUSH32)}, 0b0000_0001, 4},
    53  	}
    54  	for i, test := range tests {
    55  		ret := codeBitmap(test.code)
    56  		if ret[test.which] != test.exp {
    57  			t.Fatalf("test %d: expected %x, got %02x", i, test.exp, ret[test.which])
    58  		}
    59  	}
    60  }
    61  
    62  const analysisCodeSize = 1200 * 1024
    63  
    64  func BenchmarkJumpdestAnalysis_1200k(bench *testing.B) {
    65  	// 1.4 ms
    66  	code := make([]byte, analysisCodeSize)
    67  	bench.SetBytes(analysisCodeSize)
    68  	bench.ResetTimer()
    69  	for i := 0; i < bench.N; i++ {
    70  		codeBitmap(code)
    71  	}
    72  	bench.StopTimer()
    73  }
    74  func BenchmarkJumpdestHashing_1200k(bench *testing.B) {
    75  	// 4 ms
    76  	code := make([]byte, analysisCodeSize)
    77  	bench.SetBytes(analysisCodeSize)
    78  	bench.ResetTimer()
    79  	for i := 0; i < bench.N; i++ {
    80  		crypto.Keccak256Hash(code)
    81  	}
    82  	bench.StopTimer()
    83  }
    84  
    85  func BenchmarkJumpdestOpAnalysis(bench *testing.B) {
    86  	var op OpCode
    87  	bencher := func(b *testing.B) {
    88  		code := make([]byte, analysisCodeSize)
    89  		b.SetBytes(analysisCodeSize)
    90  		for i := range code {
    91  			code[i] = byte(op)
    92  		}
    93  		bits := make(bitvec, len(code)/8+1+4)
    94  		b.ResetTimer()
    95  		for i := 0; i < b.N; i++ {
    96  			for j := range bits {
    97  				bits[j] = 0
    98  			}
    99  			codeBitmapInternal(code, bits)
   100  		}
   101  	}
   102  	for op = PUSH1; op <= PUSH32; op++ {
   103  		bench.Run(op.String(), bencher)
   104  	}
   105  	op = JUMPDEST
   106  	bench.Run(op.String(), bencher)
   107  	op = STOP
   108  	bench.Run(op.String(), bencher)
   109  }