1 /**************************************************************************
3 * Copyright 2011 Jose Fonseca
4 * Copyright 2010 VMware, Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 **************************************************************************/
32 #include "trace_parser.hpp"
35 #define TRACE_VERBOSE 0
41 unsigned long long Parser::version = 0;
55 bool Parser::open(const char *filename) {
56 file = gzopen(filename, "rb");
61 version = read_uint();
62 if (version > TRACE_VERSION) {
63 std::cerr << "error: unsupported format version" << version << "\n";
71 void Parser::close(void) {
79 Call *Parser::parse_call(void) {
83 case Trace::EVENT_ENTER:
86 case Trace::EVENT_LEAVE:
88 case Trace::EVENT_MESSAGE:
89 std::cerr << "message: " << read_string() << "\n";
92 std::cerr << "error: unknown call detail " << c << "\n";
103 * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
106 T *lookup(std::vector<T *> &map, size_t index) {
107 if (index >= map.size()) {
108 map.resize(index + 1);
116 void Parser::parse_enter(void) {
117 size_t id = read_uint();
119 Call::Signature *sig = lookup(functions, id);
121 sig = new Call::Signature;
122 sig->name = read_string();
123 unsigned size = read_uint();
124 for (unsigned i = 0; i < size; ++i) {
125 sig->arg_names.push_back(read_string());
131 Call *call = new Call(sig);
132 call->no = next_call_no++;
134 parse_call_details(call);
136 calls.push_back(call);
140 Call *Parser::parse_leave(void) {
141 unsigned call_no = read_uint();
144 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
145 if ((*it)->no == call_no) {
155 parse_call_details(call);
160 void Parser::parse_call_details(Call *call) {
164 case Trace::CALL_END:
166 case Trace::CALL_ARG:
169 case Trace::CALL_RET:
170 call->ret = parse_value();
173 std::cerr << "error: unknown call detail " << c << "\n";
183 void Parser::parse_arg(Call *call) {
184 unsigned index = read_uint();
185 Value *value = parse_value();
186 if (index >= call->args.size()) {
187 call->args.resize(index + 1);
189 call->args[index] = value;
193 Value *Parser::parse_value(void) {
197 case Trace::TYPE_NULL:
199 case Trace::TYPE_FALSE:
200 return new Bool(false);
201 case Trace::TYPE_TRUE:
202 return new Bool(true);
203 case Trace::TYPE_SINT:
205 case Trace::TYPE_UINT:
207 case Trace::TYPE_FLOAT:
208 return parse_float();
209 case Trace::TYPE_DOUBLE:
210 return parse_double();
211 case Trace::TYPE_STRING:
212 return parse_string();
213 case Trace::TYPE_ENUM:
215 case Trace::TYPE_BITMASK:
216 return parse_bitmask();
217 case Trace::TYPE_ARRAY:
218 return parse_array();
219 case Trace::TYPE_STRUCT:
220 return parse_struct();
221 case Trace::TYPE_BLOB:
223 case Trace::TYPE_OPAQUE:
224 return parse_opaque();
226 std::cerr << "error: unknown type " << c << "\n";
233 Value *Parser::parse_sint() {
234 return new SInt(-(signed long long)read_uint());
238 Value *Parser::parse_uint() {
239 return new UInt(read_uint());
243 Value *Parser::parse_float() {
245 gzread(file, &value, sizeof value);
246 return new Float(value);
250 Value *Parser::parse_double() {
252 gzread(file, &value, sizeof value);
253 return new Float(value);
257 Value *Parser::parse_string() {
258 return new String(read_string());
262 Value *Parser::parse_enum() {
263 size_t id = read_uint();
264 Enum::Signature *sig = lookup(enums, id);
266 std::string name = read_string();
267 Value *value = parse_value();
268 sig = new Enum::Signature(name, value);
272 return new Enum(sig);
276 Value *Parser::parse_bitmask() {
277 size_t id = read_uint();
278 Bitmask::Signature *sig = lookup(bitmasks, id);
280 size_t size = read_uint();
281 sig = new Bitmask::Signature(size);
282 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
283 it->first = read_string();
284 it->second = read_uint();
285 if (it->second == 0 && it != sig->begin()) {
286 std::cerr << "warning: bitmask " << it->first << " is zero but is not first flag\n";
293 unsigned long long value = read_uint();
295 return new Bitmask(sig, value);
299 Value *Parser::parse_array(void) {
300 size_t len = read_uint();
301 Array *array = new Array(len);
302 for (size_t i = 0; i < len; ++i) {
303 array->values[i] = parse_value();
309 Value *Parser::parse_blob(void) {
310 size_t size = read_uint();
311 Blob *blob = new Blob(size);
313 gzread(file, blob->buf, (unsigned)size);
319 Value *Parser::parse_struct() {
320 size_t id = read_uint();
322 Struct::Signature *sig = lookup(structs, id);
324 sig = new Struct::Signature;
325 sig->name = read_string();
326 unsigned size = read_uint();
327 for (unsigned i = 0; i < size; ++i) {
328 sig->member_names.push_back(read_string());
334 Struct *value = new Struct(sig);
336 for (size_t i = 0; i < sig->member_names.size(); ++i) {
337 value->members[i] = parse_value();
344 Value *Parser::parse_opaque() {
345 unsigned long long addr;
347 return new Pointer(addr);
351 std::string Parser::read_string(void) {
352 size_t len = read_uint();
354 return std::string();
356 char * buf = new char[len];
357 gzread(file, buf, (unsigned)len);
358 std::string value(buf, len);
361 std::cerr << "\tSTRING \"" << value << "\"\n";
367 unsigned long long Parser::read_uint(void) {
368 unsigned long long value = 0;
376 value |= (unsigned long long)(c & 0x7f) << shift;
380 std::cerr << "\tUINT " << value << "\n";
386 inline int Parser::read_byte(void) {
387 int c = gzgetc(file);
390 std::cerr << "\tEOF" << "\n";
392 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
398 } /* namespace Trace */