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Put PUBLIC lines in Mac symbol files.

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Exported symbols on Mach-O binaries are defined in a STABS section. This patch makes stabs_reader handle them, adds support for Extern symbols in the Module class (which are output as PUBLIC lines in symbol files), and the proper processing in stabs_to_module to hook it all up.

A=mark R=jimb at http://breakpad.appspot.com/163001 and http://breakpad.appspot.com/267001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@778 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
ted.mielczarek 2011-03-04 16:08:39 +00:00
parent 68b256aed3
commit bf25801d83
9 changed files with 270 additions and 11 deletions
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36
src/common/module.h
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@ -65,6 +65,7 @@ class Module {
struct File;
struct Function;
struct Line;
struct Extern;
// Addresses appearing in File, Function, and Line structures are
// absolute, not relative to the the module's load address. That
@ -117,6 +118,12 @@ class Module {
int number; // The source line number.
};
// An exported symbol.
struct Extern {
Address address;
string name;
};
// A map from register names to postfix expressions that recover
// their their values. This can represent a complete set of rules to
// follow at some address, or a set of changes to be applied to an
@ -155,6 +162,13 @@ class Module {
}
};
struct ExternCompare {
bool operator() (const Extern *lhs,
const Extern *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,
@ -187,11 +201,15 @@ class Module {
vector<Function *>::iterator end);
// Add STACK_FRAME_ENTRY to the module.
//
// This module owns all StackFrameEntry objects added with this
// function: destroying the module destroys them as well.
void AddStackFrameEntry(StackFrameEntry *stack_frame_entry);
// Add PUBLIC to the module.
// This module owns all Extern objects added with this function:
// destroying the module destroys them as well.
void AddExtern(Extern *ext);
// If this module has a file named NAME, return a pointer to it. If
// it has none, then create one and return a pointer to the new
// file. This module owns all File objects created using these
@ -210,6 +228,13 @@ class Module {
// appropriate interface.)
void GetFunctions(vector<Function *> *vec, vector<Function *>::iterator i);
// 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);
// 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,
@ -269,8 +294,13 @@ class Module {
// A map from filenames to File structures. The map's keys are
// pointers to the Files' names.
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;
// 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.
@ -280,6 +310,10 @@ class Module {
// The module owns all the call frame info entries that have been
// added to it.
vector<StackFrameEntry *> 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