1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
//===-- llvm-bcanalyzer.cpp - Byte Code Analyzer --------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer and is distributed under the
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This tool may be invoked in the following manner:
// llvm-bcanalyzer [options] - Read LLVM bytecode from stdin
// llvm-bcanalyzer [options] x.bc - Read LLVM bytecode from the x.bc file
//
// Options:
// --help - Output information about command line switches
// --nodetails - Don't print out detailed informaton about individual
// blocks and functions
// --dump - Dump low-level bytecode structure in readable format
//
// This tool provides analytical information about a bytecode file. It is
// intended as an aid to developers of bytecode reading and writing software. It
// produces on std::out a summary of the bytecode file that shows various
// statistics about the contents of the file. By default this information is
// detailed and contains information about individual bytecode blocks and the
// functions in the module. To avoid this more detailed output, use the
// -nodetails option to limit the output to just module level information.
// The tool is also able to print a bytecode file in a straight forward text
// format that shows the containment and relationships of the information in
// the bytecode file (-dump option).
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/Verifier.h"
#include "llvm/Bytecode/Analyzer.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compressor.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/System/Signals.h"
#include <fstream>
#include <iostream>
using namespace llvm;
static cl::opt<std::string>
InputFilename(cl::Positional, cl::desc("<input bytecode>"), cl::init("-"));
static cl::opt<std::string>
OutputFilename("-o", cl::init("-"), cl::desc("<output file>"));
static cl::opt<bool> NoDetails ("nodetails", cl::desc("Skip detailed output"));
static cl::opt<bool> Dump ("dump", cl::desc("Dump low level bytecode trace"));
static cl::opt<bool> Verify ("verify", cl::desc("Progressively verify module"));
int main(int argc, char **argv) {
llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
try {
cl::ParseCommandLineOptions(argc, argv,
" llvm-bcanalyzer Analysis of ByteCode Dumper\n");
sys::PrintStackTraceOnErrorSignal();
std::ostream* Out = &std::cout; // Default to printing to stdout...
std::string ErrorMessage;
BytecodeAnalysis bca;
/// Determine what to generate
bca.detailedResults = !NoDetails;
bca.progressiveVerify = Verify;
/// Analyze the bytecode file
Module* M = AnalyzeBytecodeFile(InputFilename, bca,
Compressor::decompressToNewBuffer,
&ErrorMessage, (Dump?Out:0));
// All that bcanalyzer does is write the gathered statistics to the output
PrintBytecodeAnalysis(bca,*Out);
if ( M && Verify ) {
std::string verificationMsg;
if (verifyModule(*M, ReturnStatusAction, &verificationMsg))
std::cerr << "Final Verification Message: " << verificationMsg << "\n";
}
if (Out != &std::cout) {
((std::ofstream*)Out)->close();
delete Out;
}
return 0;
} catch (const std::string& msg) {
std::cerr << argv[0] << ": " << msg << "\n";
} catch (...) {
std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
}
return 1;
}
// vim: sw=2
|
