Clementine-audio-player-Mac.../3rdparty/google-breakpad/common/module.cc

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// Copyright (c) 2010 Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
// module.cc: Implement google_breakpad::Module. See module.h.
#include "common/module.h"
#include <assert.h>
#include <errno.h>
#include <string.h>
namespace google_breakpad {
Module::Module(const string &name, const string &os,
const string &architecture, const string &id) :
name_(name),
os_(os),
architecture_(architecture),
id_(id),
load_address_(0) { }
Module::~Module() {
for (FileByNameMap::iterator it = files_.begin(); it != files_.end(); it++)
delete it->second;
for (FunctionSet::iterator it = functions_.begin();
it != functions_.end(); it++)
delete *it;
for (vector<StackFrameEntry *>::iterator it = stack_frame_entries_.begin();
it != stack_frame_entries_.end(); it++)
delete *it;
for (ExternSet::iterator it = externs_.begin();
it != externs_.end(); it++)
delete *it;
}
void Module::SetLoadAddress(Address address) {
load_address_ = address;
}
void Module::AddFunction(Function *function) {
// FUNC lines must not hold an empty name, so catch the problem early if
// callers try to add one.
assert(!function->name.empty());
std::pair<FunctionSet::iterator,bool> ret = functions_.insert(function);
if (!ret.second) {
// Free the duplicate that was not inserted because this Module
// now owns it.
delete function;
}
}
void Module::AddFunctions(vector<Function *>::iterator begin,
vector<Function *>::iterator end) {
for (vector<Function *>::iterator it = begin; it != end; it++)
AddFunction(*it);
}
void Module::AddStackFrameEntry(StackFrameEntry *stack_frame_entry) {
stack_frame_entries_.push_back(stack_frame_entry);
}
void Module::AddExtern(Extern *ext) {
std::pair<ExternSet::iterator,bool> ret = externs_.insert(ext);
if (!ret.second) {
// Free the duplicate that was not inserted because this Module
// now owns it.
delete ext;
}
}
void Module::GetFunctions(vector<Function *> *vec,
vector<Function *>::iterator i) {
vec->insert(i, functions_.begin(), functions_.end());
}
void Module::GetExterns(vector<Extern *> *vec,
vector<Extern *>::iterator i) {
vec->insert(i, externs_.begin(), externs_.end());
}
Module::File *Module::FindFile(const string &name) {
// A tricky bit here. The key of each map entry needs to be a
// pointer to the entry's File's name string. This means that we
// can't do the initial lookup with any operation that would create
// an empty entry for us if the name isn't found (like, say,
// operator[] or insert do), because such a created entry's key will
// be a pointer the string passed as our argument. Since the key of
// a map's value type is const, we can't fix it up once we've
// created our file. lower_bound does the lookup without doing an
// insertion, and returns a good hint iterator to pass to insert.
// Our "destiny" is where we belong, whether we're there or not now.
FileByNameMap::iterator destiny = files_.lower_bound(&name);
if (destiny == files_.end()
|| *destiny->first != name) { // Repeated string comparison, boo hoo.
File *file = new File;
file->name = name;
file->source_id = -1;
destiny = files_.insert(destiny,
FileByNameMap::value_type(&file->name, file));
}
return destiny->second;
}
Module::File *Module::FindFile(const char *name) {
string name_string = name;
return FindFile(name_string);
}
Module::File *Module::FindExistingFile(const string &name) {
FileByNameMap::iterator it = files_.find(&name);
return (it == files_.end()) ? NULL : it->second;
}
void Module::GetFiles(vector<File *> *vec) {
vec->clear();
for (FileByNameMap::iterator it = files_.begin(); it != files_.end(); it++)
vec->push_back(it->second);
}
void Module::GetStackFrameEntries(vector<StackFrameEntry *> *vec) {
*vec = stack_frame_entries_;
}
void Module::AssignSourceIds() {
// First, give every source file an id of -1.
for (FileByNameMap::iterator file_it = files_.begin();
file_it != files_.end(); file_it++)
file_it->second->source_id = -1;
// Next, mark all files actually cited by our functions' line number
// info, by setting each one's source id to zero.
for (FunctionSet::const_iterator func_it = functions_.begin();
func_it != functions_.end(); func_it++) {
Function *func = *func_it;
for (vector<Line>::iterator line_it = func->lines.begin();
line_it != func->lines.end(); line_it++)
line_it->file->source_id = 0;
}
// Finally, assign source ids to those files that have been marked.
// We could have just assigned source id numbers while traversing
// the line numbers, but doing it this way numbers the files in
// lexicographical order by name, which is neat.
int next_source_id = 0;
for (FileByNameMap::iterator file_it = files_.begin();
file_it != files_.end(); file_it++)
if (!file_it->second->source_id)
file_it->second->source_id = next_source_id++;
}
bool Module::ReportError() {
fprintf(stderr, "error writing symbol file: %s\n",
strerror(errno));
return false;
}
bool Module::WriteRuleMap(const RuleMap &rule_map, FILE *stream) {
for (RuleMap::const_iterator it = rule_map.begin();
it != rule_map.end(); it++) {
if (it != rule_map.begin() &&
0 > putc(' ', stream))
return false;
if (0 > fprintf(stream, "%s: %s", it->first.c_str(), it->second.c_str()))
return false;
}
return true;
}
bool Module::Write(FILE *stream) {
if (0 > fprintf(stream, "MODULE %s %s %s %s\n",
os_.c_str(), architecture_.c_str(), id_.c_str(),
name_.c_str()))
return ReportError();
AssignSourceIds();
// Write out files.
for (FileByNameMap::iterator file_it = files_.begin();
file_it != files_.end(); file_it++) {
File *file = file_it->second;
if (file->source_id >= 0) {
if (0 > fprintf(stream, "FILE %d %s\n",
file->source_id, file->name.c_str()))
return ReportError();
}
}
// Write out functions and their lines.
for (FunctionSet::const_iterator func_it = functions_.begin();
func_it != functions_.end(); func_it++) {
Function *func = *func_it;
if (0 > fprintf(stream, "FUNC %llx %llx %llx %s\n",
(unsigned long long) (func->address - load_address_),
(unsigned long long) func->size,
(unsigned long long) func->parameter_size,
func->name.c_str()))
return ReportError();
for (vector<Line>::iterator line_it = func->lines.begin();
line_it != func->lines.end(); line_it++)
if (0 > fprintf(stream, "%llx %llx %d %d\n",
(unsigned long long) (line_it->address - load_address_),
(unsigned long long) line_it->size,
line_it->number,
line_it->file->source_id))
return ReportError();
}
// Write out 'PUBLIC' records.
for (ExternSet::const_iterator extern_it = externs_.begin();
extern_it != externs_.end(); extern_it++) {
Extern *ext = *extern_it;
if (0 > fprintf(stream, "PUBLIC %llx 0 %s\n",
(unsigned long long) (ext->address - load_address_),
ext->name.c_str()))
return ReportError();
}
// Write out 'STACK CFI INIT' and 'STACK CFI' records.
vector<StackFrameEntry *>::const_iterator frame_it;
for (frame_it = stack_frame_entries_.begin();
frame_it != stack_frame_entries_.end(); frame_it++) {
StackFrameEntry *entry = *frame_it;
if (0 > fprintf(stream, "STACK CFI INIT %llx %llx ",
(unsigned long long) entry->address - load_address_,
(unsigned long long) entry->size)
|| !WriteRuleMap(entry->initial_rules, stream)
|| 0 > putc('\n', stream))
return ReportError();
// Write out this entry's delta rules as 'STACK CFI' records.
for (RuleChangeMap::const_iterator delta_it = entry->rule_changes.begin();
delta_it != entry->rule_changes.end(); delta_it++) {
if (0 > fprintf(stream, "STACK CFI %llx ",
(unsigned long long) delta_it->first - load_address_)
|| !WriteRuleMap(delta_it->second, stream)
|| 0 > putc('\n', stream))
return ReportError();
}
}
return true;
}
} // namespace google_breakpad