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tenfourfox/toolkit/crashreporter/breakpad-patches/00-module-api-extras.patch
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

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# HG changeset patch
# User Ted Mielczarek <ted@mielczarek.org>
# Date 1352220493 18000
# Node ID c3b1109dd392c16a9fe4e85da693010966dbbf0b
# Parent 03db269a2868503cca9e80f62ce676aabbf967fd
Add APIs for querying Module data
R=glandium at https://breakpad.appspot.com/511003/
diff --git a/src/common/module.cc b/src/common/module.cc
--- a/src/common/module.cc
+++ b/src/common/module.cc
@@ -58,17 +58,17 @@
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();
+ for (StackFrameEntrySet::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) {
@@ -88,39 +88,84 @@
}
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::AddStackFrameEntry(StackFrameEntry* stack_frame_entry) {
+ std::pair<StackFrameEntrySet::iterator,bool> ret =
+ stack_frame_entries_.insert(stack_frame_entry);
+ if (!ret.second) {
+ // Free the duplicate that was not inserted because this Module
+ // now owns it.
+ delete 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());
}
+template<typename T>
+bool EntryContainsAddress(T entry, Module::Address address) {
+ return entry->address <= address && address < entry->address + entry->size;
+}
+
+Module::Function* Module::FindFunctionByAddress(Address address) {
+ Function search;
+ search.address = address;
+ // Ensure that name always sorts higher than the function name,
+ // so that upper_bound always returns the function just after
+ // the function containing this address.
+ search.name = "\xFF";
+ FunctionSet::iterator it = functions_.upper_bound(&search);
+ if (it == functions_.begin())
+ return NULL;
+
+ it--;
+
+ if (EntryContainsAddress(*it, address))
+ return *it;
+
+ return NULL;
+}
+
void Module::GetExterns(vector<Extern *> *vec,
vector<Extern *>::iterator i) {
vec->insert(i, externs_.begin(), externs_.end());
}
+Module::Extern* Module::FindExternByAddress(Address address) {
+ Extern search;
+ search.address = address;
+ ExternSet::iterator it = externs_.upper_bound(&search);
+
+ if (it == externs_.begin())
+ return NULL;
+
+ it--;
+ if ((*it)->address > address)
+ return NULL;
+
+ return *it;
+}
+
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
@@ -150,18 +195,35 @@
}
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::GetStackFrameEntries(vector<StackFrameEntry *>* vec) {
+ vec->clear();
+ vec->insert(vec->begin(), stack_frame_entries_.begin(),
+ stack_frame_entries_.end());
+}
+
+Module::StackFrameEntry* Module::FindStackFrameEntryByAddress(Address address) {
+ StackFrameEntry search;
+ search.address = address;
+ StackFrameEntrySet::iterator it = stack_frame_entries_.upper_bound(&search);
+
+ if (it == stack_frame_entries_.begin())
+ return NULL;
+
+ it--;
+ if (EntryContainsAddress(*it, address))
+ return *it;
+
+ return NULL;
}
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;
}
@@ -256,17 +318,17 @@
stream << "PUBLIC " << hex
<< (ext->address - load_address_) << " 0 "
<< ext->name << dec << endl;
}
}
if (symbol_data != NO_CFI) {
// Write out 'STACK CFI INIT' and 'STACK CFI' records.
- vector<StackFrameEntry *>::const_iterator frame_it;
+ StackFrameEntrySet::const_iterator frame_it;
for (frame_it = stack_frame_entries_.begin();
frame_it != stack_frame_entries_.end(); ++frame_it) {
StackFrameEntry *entry = *frame_it;
stream << "STACK CFI INIT " << hex
<< (entry->address - load_address_) << " "
<< entry->size << " " << dec;
if (!stream.good()
|| !WriteRuleMap(entry->initial_rules, stream))
diff --git a/src/common/module.h b/src/common/module.h
--- a/src/common/module.h
+++ b/src/common/module.h
@@ -164,16 +164,23 @@
struct ExternCompare {
bool operator() (const Extern *lhs,
const Extern *rhs) const {
return lhs->address < rhs->address;
}
};
+ struct StackFrameEntryCompare {
+ bool operator() (const StackFrameEntry* lhs,
+ const StackFrameEntry* rhs) const {
+ return lhs->address < rhs->address;
+ }
+ };
+
// Create a new module with the given name, operating system,
// architecture, and ID string.
Module(const string &name, const string &os, const string &architecture,
const string &id);
~Module();
// Set the module's load address to LOAD_ADDRESS; addresses given
// for functions and lines will be written to the Breakpad symbol
@@ -223,37 +230,49 @@
// Insert pointers to the functions added to this module at I in
// VEC. The pointed-to Functions are still owned by this module.
// (Since this is effectively a copy of the function list, this is
// mostly useful for testing; other uses should probably get a more
// appropriate interface.)
void GetFunctions(vector<Function *> *vec, vector<Function *>::iterator i);
+ // If this module has a function at ADDRESS, return a pointer to it.
+ // Otherwise, return NULL.
+ Function* FindFunctionByAddress(Address address);
+
// Insert pointers to the externs added to this module at I in
// VEC. The pointed-to Externs are still owned by this module.
// (Since this is effectively a copy of the extern list, this is
// mostly useful for testing; other uses should probably get a more
// appropriate interface.)
void GetExterns(vector<Extern *> *vec, vector<Extern *>::iterator i);
+ // If this module has an extern whose base address is less than ADDRESS,
+ // return a pointer to it. Otherwise, return NULL.
+ Extern* FindExternByAddress(Address address);
+
// Clear VEC and fill it with pointers to the Files added to this
// module, sorted by name. The pointed-to Files are still owned by
// this module. (Since this is effectively a copy of the file list,
// this is mostly useful for testing; other uses should probably get
// a more appropriate interface.)
void GetFiles(vector<File *> *vec);
// Clear VEC and fill it with pointers to the StackFrameEntry
// objects that have been added to this module. (Since this is
// effectively a copy of the stack frame entry list, this is mostly
// useful for testing; other uses should probably get
// a more appropriate interface.)
void GetStackFrameEntries(vector<StackFrameEntry *> *vec);
+ // If this module has a StackFrameEntry whose address range covers
+ // ADDRESS, return it. Otherwise return NULL.
+ StackFrameEntry* FindStackFrameEntryByAddress(Address address);
+
// Find those files in this module that are actually referred to by
// functions' line number data, and assign them source id numbers.
// Set the source id numbers for all other files --- unused by the
// source line data --- to -1. We do this before writing out the
// symbol file, at which point we omit any unused files.
void AssignSourceIds();
// Call AssignSourceIds, and write this module to STREAM in the
@@ -299,25 +318,28 @@
typedef map<const string *, File *, CompareStringPtrs> FileByNameMap;
// A set containing Function structures, sorted by address.
typedef set<Function *, FunctionCompare> FunctionSet;
// A set containing Extern structures, sorted by address.
typedef set<Extern *, ExternCompare> ExternSet;
+ // A set containing StackFrameEntry structures, sorted by address.
+ typedef set<StackFrameEntry*, StackFrameEntryCompare> StackFrameEntrySet;
+
// The module owns all the files and functions that have been added
// to it; destroying the module frees the Files and Functions these
// point to.
FileByNameMap files_; // This module's source files.
FunctionSet functions_; // This module's functions.
// The module owns all the call frame info entries that have been
// added to it.
- vector<StackFrameEntry *> stack_frame_entries_;
+ StackFrameEntrySet stack_frame_entries_;
// The module owns all the externs that have been added to it;
// destroying the module frees the Externs these point to.
ExternSet externs_;
};
} // namespace google_breakpad
diff --git a/src/common/module_unittest.cc b/src/common/module_unittest.cc
--- a/src/common/module_unittest.cc
+++ b/src/common/module_unittest.cc
@@ -329,63 +329,63 @@
entry3->rule_changes[0x36682fad3763ffffULL][".cfa"] =
"I think I know";
m.AddStackFrameEntry(entry3);
// Check that Write writes STACK CFI records properly.
m.Write(s, ALL_SYMBOL_DATA);
string contents = s.str();
EXPECT_STREQ("MODULE os-name architecture id-string name with spaces\n"
- "STACK CFI INIT ddb5f41285aa7757 1486493370dc5073 \n"
- "STACK CFI INIT 8064f3af5e067e38 de2a5ee55509407"
- " .cfa: I think that I shall never see"
- " cannoli: a tree whose hungry mouth is prest"
- " stromboli: a poem lovely as a tree\n"
"STACK CFI INIT 5e8d0db0a7075c6c 1c7edb12a7aea229"
" .cfa: Whose woods are these\n"
"STACK CFI 36682fad3763ffff"
" .cfa: I think I know"
" stromboli: his house is in\n"
"STACK CFI 47ceb0f63c269d7f"
" calzone: the village though"
- " cannoli: he will not see me stopping here\n",
+ " cannoli: he will not see me stopping here\n"
+ "STACK CFI INIT 8064f3af5e067e38 de2a5ee55509407"
+ " .cfa: I think that I shall never see"
+ " cannoli: a tree whose hungry mouth is prest"
+ " stromboli: a poem lovely as a tree\n"
+ "STACK CFI INIT ddb5f41285aa7757 1486493370dc5073 \n",
contents.c_str());
// Check that GetStackFrameEntries works.
vector<Module::StackFrameEntry *> entries;
m.GetStackFrameEntries(&entries);
ASSERT_EQ(3U, entries.size());
// Check first entry.
- EXPECT_EQ(0xddb5f41285aa7757ULL, entries[0]->address);
- EXPECT_EQ(0x1486493370dc5073ULL, entries[0]->size);
- ASSERT_EQ(0U, entries[0]->initial_rules.size());
- ASSERT_EQ(0U, entries[0]->rule_changes.size());
+ EXPECT_EQ(0x5e8d0db0a7075c6cULL, entries[0]->address);
+ EXPECT_EQ(0x1c7edb12a7aea229ULL, entries[0]->size);
+ Module::RuleMap entry1_initial;
+ entry1_initial[".cfa"] = "Whose woods are these";
+ EXPECT_THAT(entries[0]->initial_rules, ContainerEq(entry1_initial));
+ Module::RuleChangeMap entry1_changes;
+ entry1_changes[0x36682fad3763ffffULL][".cfa"] = "I think I know";
+ entry1_changes[0x36682fad3763ffffULL]["stromboli"] = "his house is in";
+ entry1_changes[0x47ceb0f63c269d7fULL]["calzone"] = "the village though";
+ entry1_changes[0x47ceb0f63c269d7fULL]["cannoli"] =
+ "he will not see me stopping here";
+ EXPECT_THAT(entries[0]->rule_changes, ContainerEq(entry1_changes));
// Check second entry.
EXPECT_EQ(0x8064f3af5e067e38ULL, entries[1]->address);
EXPECT_EQ(0x0de2a5ee55509407ULL, entries[1]->size);
ASSERT_EQ(3U, entries[1]->initial_rules.size());
Module::RuleMap entry2_initial;
entry2_initial[".cfa"] = "I think that I shall never see";
entry2_initial["stromboli"] = "a poem lovely as a tree";
entry2_initial["cannoli"] = "a tree whose hungry mouth is prest";
EXPECT_THAT(entries[1]->initial_rules, ContainerEq(entry2_initial));
ASSERT_EQ(0U, entries[1]->rule_changes.size());
// Check third entry.
- EXPECT_EQ(0x5e8d0db0a7075c6cULL, entries[2]->address);
- EXPECT_EQ(0x1c7edb12a7aea229ULL, entries[2]->size);
- Module::RuleMap entry3_initial;
- entry3_initial[".cfa"] = "Whose woods are these";
- EXPECT_THAT(entries[2]->initial_rules, ContainerEq(entry3_initial));
- Module::RuleChangeMap entry3_changes;
- entry3_changes[0x36682fad3763ffffULL][".cfa"] = "I think I know";
- entry3_changes[0x36682fad3763ffffULL]["stromboli"] = "his house is in";
- entry3_changes[0x47ceb0f63c269d7fULL]["calzone"] = "the village though";
- entry3_changes[0x47ceb0f63c269d7fULL]["cannoli"] =
- "he will not see me stopping here";
- EXPECT_THAT(entries[2]->rule_changes, ContainerEq(entry3_changes));
+ EXPECT_EQ(0xddb5f41285aa7757ULL, entries[2]->address);
+ EXPECT_EQ(0x1486493370dc5073ULL, entries[2]->size);
+ ASSERT_EQ(0U, entries[2]->initial_rules.size());
+ ASSERT_EQ(0U, entries[2]->rule_changes.size());
}
TEST(Construct, UniqueFiles) {
Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
Module::File *file1 = m.FindFile("foo");
Module::File *file2 = m.FindFile(string("bar"));
Module::File *file3 = m.FindFile(string("foo"));
Module::File *file4 = m.FindFile("bar");
@@ -483,8 +483,155 @@
m.Write(s, ALL_SYMBOL_DATA);
string contents = s.str();
EXPECT_STREQ("MODULE " MODULE_OS " " MODULE_ARCH " "
MODULE_ID " " MODULE_NAME "\n"
"PUBLIC ffff 0 _xyz\n",
contents.c_str());
}
+
+TEST(Lookup, Function) {
+ Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
+
+ Module::Function *function1 = new(Module::Function);
+ function1->name = "_abc1";
+ function1->address = 0x1000;
+ function1->size = 0x900;
+ function1->parameter_size = 0x0;
+
+ Module::Function *function2 = new(Module::Function);
+ function2->name = "_xyz2";
+ function2->address = 0x2000;
+ function2->size = 0x900;
+ function2->parameter_size = 0x0;
+
+ Module::Function *function3 = new(Module::Function);
+ function3->name = "_def3";
+ function3->address = 0x3000;
+ function3->size = 0x900;
+ function3->parameter_size = 0x0;
+
+ // Put them in a vector.
+ vector<Module::Function *> vec;
+ vec.push_back(function1);
+ vec.push_back(function2);
+ vec.push_back(function3);
+
+ m.AddFunctions(vec.begin(), vec.end());
+
+ // Try looking up functions by address.
+ Module::Function* f = m.FindFunctionByAddress(0x1000);
+ EXPECT_EQ(function1, f);
+ f = m.FindFunctionByAddress(0x18FF);
+ EXPECT_EQ(function1, f);
+
+ f = m.FindFunctionByAddress(0x1900);
+ EXPECT_EQ((Module::Function*)NULL, f);
+ f = m.FindFunctionByAddress(0x1A00);
+ EXPECT_EQ((Module::Function*)NULL, f);
+
+ f = m.FindFunctionByAddress(0x2000);
+ EXPECT_EQ(function2, f);
+ f = m.FindFunctionByAddress(0x28FF);
+ EXPECT_EQ(function2, f);
+
+ f = m.FindFunctionByAddress(0x3000);
+ EXPECT_EQ(function3, f);
+ f = m.FindFunctionByAddress(0x38FF);
+ EXPECT_EQ(function3, f);
+
+ f = m.FindFunctionByAddress(0x3900);
+ EXPECT_EQ((Module::Function*)NULL, f);
+ f = m.FindFunctionByAddress(0x3A00);
+ EXPECT_EQ((Module::Function*)NULL, f);
+}
+
+TEST(Lookup, Externs) {
+ Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
+
+ // Two externs.
+ Module::Extern* extern1 = new(Module::Extern);
+ extern1->address = 0x1000;
+ extern1->name = "_abc";
+ Module::Extern* extern2 = new(Module::Extern);
+ extern2->address = 0x2000;
+ extern2->name = "_xyz";
+
+ m.AddExtern(extern1);
+ m.AddExtern(extern2);
+
+ Module::Extern* e = m.FindExternByAddress(0xFFF);
+ EXPECT_EQ((Module::Extern*)NULL, e);
+
+ e = m.FindExternByAddress(0x1000);
+ EXPECT_EQ(extern1, e);
+ e = m.FindExternByAddress(0x1900);
+ EXPECT_EQ(extern1, e);
+ e = m.FindExternByAddress(0x1FFF);
+ EXPECT_EQ(extern1, e);
+
+ e = m.FindExternByAddress(0x2000);
+ EXPECT_EQ(extern2, e);
+ e = m.FindExternByAddress(0x2900);
+ EXPECT_EQ(extern2, e);
+ e = m.FindExternByAddress(0xFFFFFFFF);
+ EXPECT_EQ(extern2, e);
+}
+
+TEST(Lookup, StackFrameEntries) {
+ Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
+
+ // First STACK CFI entry, with no initial rules or deltas.
+ Module::StackFrameEntry *entry1 = new Module::StackFrameEntry();
+ entry1->address = 0x2000;
+ entry1->size = 0x900;
+ m.AddStackFrameEntry(entry1);
+
+ // Second STACK CFI entry, with initial rules but no deltas.
+ Module::StackFrameEntry *entry2 = new Module::StackFrameEntry();
+ entry2->address = 0x3000;
+ entry2->size = 0x900;
+ entry2->initial_rules[".cfa"] = "I think that I shall never see";
+ entry2->initial_rules["stromboli"] = "a poem lovely as a tree";
+ entry2->initial_rules["cannoli"] = "a tree whose hungry mouth is prest";
+ m.AddStackFrameEntry(entry2);
+
+ // Third STACK CFI entry, with initial rules and deltas.
+ Module::StackFrameEntry *entry3 = new Module::StackFrameEntry();
+ entry3->address = 0x1000;
+ entry3->size = 0x900;
+ entry3->initial_rules[".cfa"] = "Whose woods are these";
+ entry3->rule_changes[0x47ceb0f63c269d7fULL]["calzone"] =
+ "the village though";
+ entry3->rule_changes[0x47ceb0f63c269d7fULL]["cannoli"] =
+ "he will not see me stopping here";
+ entry3->rule_changes[0x36682fad3763ffffULL]["stromboli"] =
+ "his house is in";
+ entry3->rule_changes[0x36682fad3763ffffULL][".cfa"] =
+ "I think I know";
+ m.AddStackFrameEntry(entry3);
+
+ Module::StackFrameEntry* s = m.FindStackFrameEntryByAddress(0x1000);
+ EXPECT_EQ(entry3, s);
+ s = m.FindStackFrameEntryByAddress(0x18FF);
+ EXPECT_EQ(entry3, s);
+
+ s = m.FindStackFrameEntryByAddress(0x1900);
+ EXPECT_EQ((Module::StackFrameEntry*)NULL, s);
+ s = m.FindStackFrameEntryByAddress(0x1A00);
+ EXPECT_EQ((Module::StackFrameEntry*)NULL, s);
+
+ s = m.FindStackFrameEntryByAddress(0x2000);
+ EXPECT_EQ(entry1, s);
+ s = m.FindStackFrameEntryByAddress(0x28FF);
+ EXPECT_EQ(entry1, s);
+
+ s = m.FindStackFrameEntryByAddress(0x3000);
+ EXPECT_EQ(entry2, s);
+ s = m.FindStackFrameEntryByAddress(0x38FF);
+ EXPECT_EQ(entry2, s);
+
+ s = m.FindStackFrameEntryByAddress(0x3900);
+ EXPECT_EQ((Module::StackFrameEntry*)NULL, s);
+ s = m.FindStackFrameEntryByAddress(0x3A00);
+ EXPECT_EQ((Module::StackFrameEntry*)NULL, s);
+}
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