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Merge pull request #16954 from holiman/more_tracers

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eth/tracers: fix err in 4byte, add some opcode analysis tools
This commit is contained in:
Péter Szilágyi 2018-06-20 11:43:40 +03:00 committed by GitHub
commit 88c42ab4e7
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5 changed files with 214 additions and 3 deletions
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2
eth/tracers/internal/tracers/4byte_tracer.js
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@ -60,7 +60,7 @@
return;
}
// Skip any pre-compile invocations, those are just fancy opcodes
if (isPrecompiled(toAddress(log.stack.peek(1)))) {
if (isPrecompiled(toAddress(log.stack.peek(1).toString(16)))) {
return;
}
// Gather internal call details

76
eth/tracers/internal/tracers/assets.go
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47
eth/tracers/internal/tracers/bigram_tracer.js Normal file
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@ -0,0 +1,47 @@
// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
{
// hist is the counters of opcode bigrams
hist: {},
// lastOp is last operation
lastOp: '',
// execution depth of last op
lastDepth: 0,
// step is invoked for every opcode that the VM executes.
step: function(log, db) {
var op = log.op.toString();
var depth = log.getDepth();
if (depth == this.lastDepth){
var key = this.lastOp+'-'+op;
if (this.hist[key]){
this.hist[key]++;
}
else {
this.hist[key] = 1;
}
}
this.lastOp = op;
this.lastDepth = depth;
},
// fault is invoked when the actual execution of an opcode fails.
fault: function(log, db) {},
// result is invoked when all the opcodes have been iterated over and returns
// the final result of the tracing.
result: function(ctx) {
return this.hist;
},
}

49
eth/tracers/internal/tracers/trigram_tracer.js Normal file
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@ -0,0 +1,49 @@
// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
{
// hist is the map of trigram counters
hist: {},
// lastOp is last operation
lastOps: ['',''],
lastDepth: 0,
// step is invoked for every opcode that the VM executes.
step: function(log, db) {
var depth = log.getDepth();
if (depth != this.lastDepth){
this.lastOps = ['',''];
this.lastDepth = depth;
return;
}
var op = log.op.toString();
var key = this.lastOps[0]+'-'+this.lastOps[1]+'-'+op;
if (this.hist[key]){
this.hist[key]++;
}
else {
this.hist[key] = 1;
}
this.lastOps[0] = this.lastOps[1];
this.lastOps[1] = op;
},
// fault is invoked when the actual execution of an opcode fails.
fault: function(log, db) {},
// result is invoked when all the opcodes have been iterated over and returns
// the final result of the tracing.
result: function(ctx) {
return this.hist;
},
}

43
eth/tracers/internal/tracers/unigram_tracer.js Normal file
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@ -0,0 +1,43 @@
// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
{
// hist is the map of opcodes to counters
hist: {},
// nops counts number of ops
nops: 0,
// step is invoked for every opcode that the VM executes.
step: function(log, db) {
var op = log.op.toString();
if (this.hist[op]){
this.hist[op]++;
}
else {
this.hist[op] = 1;
}
this.nops++;
},
// fault is invoked when the actual execution of an opcode fails.
fault: function(log, db) {},
// result is invoked when all the opcodes have been iterated over and returns
// the final result of the tracing.
result: function(ctx) {
if(this.nops > 0){
return this.hist;
}
},
}