6 files changed, 368 insertions, 0 deletions
diff --git a/include/winapi/debug/address.hpp b/include/winapi/debug/address.hpp
new file mode 100644
index 0000000..3d7acd6
--- /dev/null
+++ b/include/winapi/debug/address.hpp
@@ -0,0 +1,34 @@
+// Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "winapi-debug" project.
+// For details, see https://github.com/egor-tensin/winapi-debug.
+// Distributed under the MIT License.
+
+#pragma once
+
+#include <windows.h>
+
+#include <sstream>
+#include <string>
+
+namespace pdb {
+
+typedef DWORD64 Address;
+
+inline std::string format_address(Address address) {
+    std::ostringstream oss;
+    oss << std::hex << std::showbase << address;
+    return oss.str();
+}
+
+inline std::string format_address(void* address) {
+    return format_address(reinterpret_cast<Address>(address));
+}
+
+inline bool parse_address(Address& dest, const std::string& src) {
+    std::istringstream iss{src};
+    iss >> std::hex;
+    char c;
+    return iss >> dest && !iss.get(c);
+}
+
+} // namespace pdb
diff --git a/include/winapi/debug/call_stack.hpp b/include/winapi/debug/call_stack.hpp
new file mode 100644
index 0000000..30f642c
--- /dev/null
+++ b/include/winapi/debug/call_stack.hpp
@@ -0,0 +1,53 @@
+// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "winapi-debug" project.
+// For details, see https://github.com/egor-tensin/winapi-debug.
+// Distributed under the MIT License.
+
+#pragma once
+
+#include "address.hpp"
+#include "dbghelp.hpp"
+
+#include <windows.h>
+
+#include <array>
+#include <cstddef>
+#include <functional>
+#include <ostream>
+#include <string>
+
+namespace pdb {
+
+class CallStack {
+public:
+    static constexpr std::size_t frames_to_skip = 0;
+    static constexpr std::size_t frames_to_capture = 62;
+
+    // Imposed by CaptureStackBackTrace:
+    static constexpr std::size_t max_length = 62;
+
+    static_assert(frames_to_skip + frames_to_capture <= max_length,
+                  "Call stack length is too large");
+
+    static CallStack capture();
+
+    using AddressCallback = std::function<bool(Address)>;
+    bool for_each_address(const AddressCallback& callback) const;
+
+    static std::string pretty_print_address(const DbgHelp& dbghelp, Address addr);
+
+    void dump(std::ostream& os, const DbgHelp&) const;
+
+    const std::array<Address, max_length> frames;
+    const std::size_t length;
+
+    const Address* begin() const { return frames.data(); }
+    const Address* cbegin() const { return begin(); }
+    const Address* end() const { return begin() + length; }
+    const Address* cend() const { return end(); }
+
+private:
+    CallStack() = default;
+};
+
+} // namespace pdb
diff --git a/include/winapi/debug/dbghelp.hpp b/include/winapi/debug/dbghelp.hpp
new file mode 100644
index 0000000..6965823
--- /dev/null
+++ b/include/winapi/debug/dbghelp.hpp
@@ -0,0 +1,72 @@
+// Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "winapi-debug" project.
+// For details, see https://github.com/egor-tensin/winapi-debug.
+// Distributed under the MIT License.
+
+#pragma once
+
+#include "address.hpp"
+#include "module.hpp"
+#include "symbol.hpp"
+
+#include <windows.h>
+
+#include <functional>
+#include <string>
+
+namespace pdb {
+
+class DbgHelp {
+public:
+    static DbgHelp current_process() { return DbgHelp{true}; }
+    static DbgHelp post_mortem() { return DbgHelp{false}; }
+
+    void swap(DbgHelp& other) noexcept;
+
+    DbgHelp(DbgHelp&& other) noexcept;
+    DbgHelp& operator=(DbgHelp) noexcept;
+    ~DbgHelp();
+
+    ModuleInfo load_pdb(const std::string& path) const;
+
+    typedef std::function<void(const ModuleInfo&)> OnModule;
+    void enum_modules(const OnModule&) const;
+
+    ModuleInfo resolve_module(Address) const;
+
+    typedef std::function<void(const SymbolInfo&)> OnSymbol;
+    static constexpr auto all_symbols = "*!*";
+    void enum_symbols(const ModuleInfo&, const std::string& mask, const OnSymbol&) const;
+    void enum_symbols(const ModuleInfo&, const OnSymbol&) const;
+    void enum_symbols(const std::string& mask, const OnSymbol&) const;
+    void enum_symbols(const OnSymbol&) const;
+
+    SymbolInfo resolve_symbol(Address) const;
+    SymbolInfo resolve_symbol(const std::string&) const;
+
+    LineInfo resolve_line(Address) const;
+
+private:
+    explicit DbgHelp(bool invade_current_process);
+
+    void close();
+
+    HANDLE id = NULL;
+
+    DbgHelp(const DbgHelp&) = delete;
+};
+
+inline void swap(DbgHelp& a, DbgHelp& b) noexcept {
+    a.swap(b);
+}
+
+} // namespace pdb
+
+namespace std {
+
+template <>
+inline void swap(pdb::DbgHelp& a, pdb::DbgHelp& b) noexcept {
+    a.swap(b);
+}
+
+} // namespace std
diff --git a/include/winapi/debug/module.hpp b/include/winapi/debug/module.hpp
new file mode 100644
index 0000000..5cfa69d
--- /dev/null
+++ b/include/winapi/debug/module.hpp
@@ -0,0 +1,54 @@
+// Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "winapi-debug" project.
+// For details, see https://github.com/egor-tensin/winapi-debug.
+// Distributed under the MIT License.
+
+#pragma once
+
+#include "address.hpp"
+
+#include <dbghelp.h>
+#include <windows.h>
+
+#include <string>
+
+namespace pdb {
+
+class ModuleInfo {
+public:
+    typedef IMAGEHLP_MODULEW64 Impl;
+
+    ModuleInfo();
+    explicit ModuleInfo(const Impl& impl);
+
+    explicit operator Impl&() { return impl; }
+    explicit operator const Impl&() const { return impl; }
+
+    Address get_offline_base() const { return impl.BaseOfImage; }
+
+    std::string get_name() const;
+
+private:
+    static Impl create_impl();
+
+    Impl impl;
+};
+
+class Module : public ModuleInfo {
+public:
+    Module(Address online_base, const ModuleInfo& info)
+        : ModuleInfo{info}, online_base{online_base} {}
+
+    Address get_online_base() const { return online_base; }
+
+    Address translate_offline_address(Address offline) const;
+    Address translate_online_address(Address online) const;
+
+private:
+    std::string invalid_offline_address(Address offline) const;
+    std::string invalid_online_address(Address online) const;
+
+    const Address online_base;
+};
+
+} // namespace pdb
diff --git a/include/winapi/debug/repo.hpp b/include/winapi/debug/repo.hpp
new file mode 100644
index 0000000..3b194ff
--- /dev/null
+++ b/include/winapi/debug/repo.hpp
@@ -0,0 +1,58 @@
+// Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "winapi-debug" project.
+// For details, see https://github.com/egor-tensin/winapi-debug.
+// Distributed under the MIT License.
+
+#pragma once
+
+#include "address.hpp"
+#include "dbghelp.hpp"
+#include "module.hpp"
+#include "symbol.hpp"
+
+#include <winapi/file.hpp>
+
+#include <functional>
+#include <map>
+#include <string>
+#include <unordered_set>
+
+namespace pdb {
+
+class Repo {
+public:
+    Repo() = default;
+
+    Address add_pdb(Address online_base, const std::string& path);
+
+    typedef std::function<void(const Symbol&)> OnSymbol;
+    void enum_symbols(const OnSymbol&) const;
+    void enum_symbols(Address offline_base, const OnSymbol&) const;
+    void enum_symbols(const Module&, const OnSymbol&) const;
+
+    Symbol resolve_symbol(Address) const;
+    Symbol resolve_symbol(const std::string&) const;
+
+    LineInfo resolve_line(Address) const;
+
+    const Module& module_with_online_base(Address) const;
+    const Module& module_with_offline_base(Address) const;
+
+private:
+    Symbol symbol_from_buffer(const SymbolInfo&) const;
+    static Symbol symbol_from_buffer(const Module&, const SymbolInfo&);
+
+    const Module& module_from_online_address(Address) const;
+    const Module& module_from_offline_address(Address) const;
+
+    Address address_offline_to_online(Address) const;
+    Address address_online_to_offline(Address) const;
+
+    const DbgHelp dbghelp{DbgHelp::post_mortem()};
+
+    std::unordered_set<winapi::File::ID> file_ids;
+    std::map<Address, Module> online_bases;
+    std::map<Address, const Module&> offline_bases;
+};
+
+} // namespace pdb
diff --git a/include/winapi/debug/symbol.hpp b/include/winapi/debug/symbol.hpp
new file mode 100644
index 0000000..47e4fb1
--- /dev/null
+++ b/include/winapi/debug/symbol.hpp
@@ -0,0 +1,97 @@
+// Copyright (c) 2017 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "winapi-debug" project.
+// For details, see https://github.com/egor-tensin/winapi-debug.
+// Distributed under the MIT License.
+
+#pragma once
+
+#include "address.hpp"
+#include "module.hpp"
+
+#include <dbghelp.h>
+#include <windows.h>
+
+#include <array>
+#include <climits>
+#include <cstddef>
+#include <string>
+#include <type_traits>
+
+namespace pdb {
+namespace symbol {
+
+// MinGW-w64 (as of version 7.0) doesn't have SymTagEnum
+typedef ULONG Tag;
+
+constexpr Tag SYM_TAG_FUNCTION = 5;
+
+#ifdef _MSC_VER
+static_assert(static_cast<Tag>(SymTagFunction) == SYM_TAG_FUNCTION,
+              "unexpected SymTagFunction value");
+#endif
+
+} // namespace symbol
+
+class SymbolInfo {
+public:
+    typedef SYMBOL_INFOW Impl;
+
+    SymbolInfo();
+    explicit SymbolInfo(const Impl& impl);
+
+    explicit operator Impl&() { return get_impl(); }
+    explicit operator const Impl&() const { return get_impl(); }
+
+    Address get_displacement() const { return displacement; }
+    void set_displacement(Address new_value) { displacement = new_value; }
+
+    std::string get_name() const;
+
+    Address get_offline_base() const { return get_impl().ModBase; }
+    Address get_offline_address() const { return get_impl().Address; }
+
+    symbol::Tag get_tag() const { return get_impl().Tag; }
+
+    enum class Type : symbol::Tag {
+        Function = symbol::SYM_TAG_FUNCTION,
+        RESERVED = ULONG_MAX,
+    };
+
+    Type get_type() const { return static_cast<Type>(get_tag()); }
+
+    bool is_function() const { return get_type() == Type::Function; }
+
+private:
+    static constexpr std::size_t char_size = sizeof(std::remove_extent<decltype(Impl::Name)>::type);
+    static_assert(char_size == sizeof(wchar_t), "Aren't we using the wide WinAPI?");
+    static constexpr std::size_t max_buffer_size = sizeof(Impl) + (MAX_SYM_NAME - 1) * char_size;
+
+    std::array<unsigned char, max_buffer_size> buffer;
+    Address displacement = 0;
+
+    const Impl& get_impl() const { return *reinterpret_cast<const Impl*>(buffer.data()); }
+    Impl& get_impl() { return *reinterpret_cast<Impl*>(buffer.data()); }
+};
+
+class Symbol : public SymbolInfo {
+public:
+    Symbol(Address online_address, const SymbolInfo& info)
+        : SymbolInfo{info}, online_address{online_address} {}
+
+    Address get_online_address() const { return online_address; }
+
+private:
+    const Address online_address;
+};
+
+class LineInfo {
+public:
+    typedef IMAGEHLP_LINEW64 Impl;
+
+    explicit LineInfo(const Impl& impl);
+
+    const std::string file_path;
+    const unsigned long line_number;
+};
+
+} // namespace pdb