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
53 bool Parser::open(const char *filename) {
54 file = gzopen(filename, "rb");
59 version = read_uint();
60 if (version > TRACE_VERSION) {
61 std::cerr << "error: unsupported format version" << version << "\n";
69 void Parser::close(void) {
77 Call *Parser::parse_call(void) {
81 case Trace::EVENT_ENTER:
84 case Trace::EVENT_LEAVE:
86 case Trace::EVENT_MESSAGE:
87 std::cerr << "message: " << read_string() << "\n";
90 std::cerr << "error: unknown call detail " << c << "\n";
101 * Helper function to lookup an ID in a vector, resizing the vector if it doesn't fit.
104 T *lookup(std::vector<T *> &map, size_t index) {
105 if (index >= map.size()) {
106 map.resize(index + 1);
114 void Parser::parse_enter(void) {
115 size_t id = read_uint();
117 Call::Signature *sig = lookup(functions, id);
119 sig = new Call::Signature;
120 sig->name = read_string();
121 unsigned size = read_uint();
122 for (unsigned i = 0; i < size; ++i) {
123 sig->arg_names.push_back(read_string());
129 Call *call = new Call(sig);
130 call->no = next_call_no++;
132 parse_call_details(call);
134 calls.push_back(call);
138 Call *Parser::parse_leave(void) {
139 unsigned call_no = read_uint();
142 for (CallList::iterator it = calls.begin(); it != calls.end(); ++it) {
143 if ((*it)->no == call_no) {
153 parse_call_details(call);
158 void Parser::parse_call_details(Call *call) {
162 case Trace::CALL_END:
164 case Trace::CALL_ARG:
167 case Trace::CALL_RET:
168 call->ret = parse_value();
171 std::cerr << "error: unknown call detail " << c << "\n";
181 void Parser::parse_arg(Call *call) {
182 unsigned index = read_uint();
183 Value *value = parse_value();
184 if (index >= call->args.size()) {
185 call->args.resize(index + 1);
187 call->args[index] = value;
191 Value *Parser::parse_value(void) {
195 case Trace::TYPE_NULL:
197 case Trace::TYPE_FALSE:
198 return new Bool(false);
199 case Trace::TYPE_TRUE:
200 return new Bool(true);
201 case Trace::TYPE_SINT:
203 case Trace::TYPE_UINT:
205 case Trace::TYPE_FLOAT:
206 return parse_float();
207 case Trace::TYPE_DOUBLE:
208 return parse_double();
209 case Trace::TYPE_STRING:
210 return parse_string();
211 case Trace::TYPE_ENUM:
213 case Trace::TYPE_BITMASK:
214 return parse_bitmask();
215 case Trace::TYPE_ARRAY:
216 return parse_array();
217 case Trace::TYPE_STRUCT:
218 return parse_struct();
219 case Trace::TYPE_BLOB:
221 case Trace::TYPE_OPAQUE:
222 return parse_opaque();
224 std::cerr << "error: unknown type " << c << "\n";
231 Value *Parser::parse_sint() {
232 return new SInt(-(signed long long)read_uint());
236 Value *Parser::parse_uint() {
237 return new UInt(read_uint());
241 Value *Parser::parse_float() {
243 gzread(file, &value, sizeof value);
244 return new Float(value);
248 Value *Parser::parse_double() {
250 gzread(file, &value, sizeof value);
251 return new Float(value);
255 Value *Parser::parse_string() {
256 return new String(read_string());
260 Value *Parser::parse_enum() {
261 size_t id = read_uint();
262 Enum::Signature *sig = lookup(enums, id);
264 std::string name = read_string();
265 Value *value = parse_value();
266 sig = new Enum::Signature(name, value);
270 return new Enum(sig);
274 Value *Parser::parse_bitmask() {
275 size_t id = read_uint();
276 Bitmask::Signature *sig = lookup(bitmasks, id);
278 size_t size = read_uint();
279 sig = new Bitmask::Signature(size);
280 for (Bitmask::Signature::iterator it = sig->begin(); it != sig->end(); ++it) {
281 it->first = read_string();
282 it->second = read_uint();
283 if (it->second == 0 && it != sig->begin()) {
284 std::cerr << "warning: bitmask " << it->first << " is zero but is not first flag\n";
291 unsigned long long value = read_uint();
293 return new Bitmask(sig, value);
297 Value *Parser::parse_array(void) {
298 size_t len = read_uint();
299 Array *array = new Array(len);
300 for (size_t i = 0; i < len; ++i) {
301 array->values[i] = parse_value();
307 Value *Parser::parse_blob(void) {
308 size_t size = read_uint();
309 Blob *blob = new Blob(size);
311 gzread(file, blob->buf, (unsigned)size);
317 Value *Parser::parse_struct() {
318 size_t id = read_uint();
320 Struct::Signature *sig = lookup(structs, id);
322 sig = new Struct::Signature;
323 sig->name = read_string();
324 unsigned size = read_uint();
325 for (unsigned i = 0; i < size; ++i) {
326 sig->member_names.push_back(read_string());
332 Struct *value = new Struct(sig);
334 for (size_t i = 0; i < sig->member_names.size(); ++i) {
335 value->members[i] = parse_value();
342 Value *Parser::parse_opaque() {
343 unsigned long long addr;
345 return new Pointer(addr);
349 std::string Parser::read_string(void) {
350 size_t len = read_uint();
352 return std::string();
354 char * buf = new char[len];
355 gzread(file, buf, (unsigned)len);
356 std::string value(buf, len);
359 std::cerr << "\tSTRING \"" << value << "\"\n";
365 unsigned long long Parser::read_uint(void) {
366 unsigned long long value = 0;
374 value |= (unsigned long long)(c & 0x7f) << shift;
378 std::cerr << "\tUINT " << value << "\n";
384 inline int Parser::read_byte(void) {
385 int c = gzgetc(file);
388 std::cerr << "\tEOF" << "\n";
390 std::cerr << "\tBYTE 0x" << std::hex << c << std::dec << "\n";
396 } /* namespace Trace */