554 lines
19 KiB
C++
554 lines
19 KiB
C++
#include <array>
|
|
#include <cstdint>
|
|
#include <exception>
|
|
#include <stdexcept>
|
|
#include <windows.h>
|
|
#include <rpc.h>
|
|
#ifdef DXX_ENABLE_WINDOWS_MINIDUMP
|
|
#include <dbghelp.h>
|
|
#endif
|
|
#include "vers_id.h"
|
|
|
|
using path_buffer = std::array<wchar_t, MAX_PATH>;
|
|
void d_set_exception_handler();
|
|
|
|
namespace {
|
|
|
|
class RAII_Windows_FILE_HANDLE
|
|
{
|
|
const HANDLE m_h;
|
|
public:
|
|
RAII_Windows_FILE_HANDLE(HANDLE &&h) :
|
|
m_h(h)
|
|
{
|
|
}
|
|
~RAII_Windows_FILE_HANDLE()
|
|
{
|
|
if (*this)
|
|
CloseHandle(m_h);
|
|
}
|
|
RAII_Windows_FILE_HANDLE(const RAII_Windows_FILE_HANDLE &) = delete;
|
|
RAII_Windows_FILE_HANDLE &operator=(const RAII_Windows_FILE_HANDLE &) = delete;
|
|
explicit operator bool() const
|
|
{
|
|
return m_h != INVALID_HANDLE_VALUE;
|
|
}
|
|
operator HANDLE() const
|
|
{
|
|
return m_h;
|
|
}
|
|
};
|
|
|
|
class RAII_Windows_DynamicSharedObject
|
|
{
|
|
HMODULE m_h;
|
|
RAII_Windows_DynamicSharedObject(HMODULE &&h) :
|
|
m_h(h)
|
|
{
|
|
}
|
|
static RAII_Windows_DynamicSharedObject LoadInternal(std::array<wchar_t, MAX_PATH> &pathbuf, const unsigned lws, const wchar_t *const filename)
|
|
{
|
|
wcscpy(&pathbuf[lws], filename);
|
|
return LoadLibraryW(pathbuf.data());
|
|
}
|
|
public:
|
|
~RAII_Windows_DynamicSharedObject()
|
|
{
|
|
if (*this)
|
|
FreeLibrary(m_h);
|
|
}
|
|
RAII_Windows_DynamicSharedObject(const RAII_Windows_DynamicSharedObject &) = delete;
|
|
RAII_Windows_DynamicSharedObject &operator=(const RAII_Windows_DynamicSharedObject &) = delete;
|
|
RAII_Windows_DynamicSharedObject(RAII_Windows_DynamicSharedObject &&) = default;
|
|
explicit operator bool() const
|
|
{
|
|
return m_h;
|
|
}
|
|
/*
|
|
* This leaks the loaded library. It is used to ensure the library
|
|
* will still be loaded when the termination handler runs, long
|
|
* after this object has gone out of scope.
|
|
*/
|
|
void release()
|
|
{
|
|
m_h = nullptr;
|
|
}
|
|
template <std::size_t N>
|
|
static RAII_Windows_DynamicSharedObject Load(std::array<wchar_t, MAX_PATH> &pathbuf, const unsigned lws, const wchar_t (&filename)[N])
|
|
{
|
|
if (lws >= MAX_PATH - N)
|
|
return nullptr;
|
|
return LoadInternal(pathbuf, lws, filename);
|
|
}
|
|
template <typename T>
|
|
T *GetProc(const char *const proc) const
|
|
{
|
|
union {
|
|
FARPROC gpa;
|
|
T *result;
|
|
};
|
|
gpa = GetProcAddress(m_h, proc);
|
|
return result;
|
|
}
|
|
};
|
|
|
|
struct dxx_trap_context
|
|
{
|
|
EXCEPTION_RECORD ExceptionRecord;
|
|
CONTEXT ContextRecord;
|
|
/* Pointer to the first inaccessible byte above the stack. */
|
|
const uint8_t *end_sp;
|
|
};
|
|
|
|
}
|
|
|
|
#define DXX_REPORT_TEXT_FORMAT_UUID "Format UUID: 0f7deda4-1122-4be8-97d5-afc91b7803d6"
|
|
#define DXX_REPORT_TEXT_LEADER_VERSION_PREFIX "Rebirth version: x"
|
|
#define DXX_REPORT_TEXT_LEADER_BUILD_DATETIME "Rebirth built: "
|
|
#define DXX_REPORT_TEXT_LEADER_EXCEPTION_MESSAGE "Exception message: "
|
|
|
|
constexpr unsigned dump_stack_bytes = 2048 * sizeof(void *);
|
|
constexpr unsigned dump_stack_stride = 16;
|
|
|
|
/*
|
|
* This includes leading text describing the UUID, so it must be bigger
|
|
* than a bare UUID would require.
|
|
*/
|
|
static std::array<char, 54> g_strctxuuid;
|
|
/*
|
|
* These labels are defined in asm() statements to record the address at
|
|
* which special instructions are placed. The array size must match the
|
|
* size of the assembly instruction. See `vectored_exception_handler`
|
|
* for how these are used.
|
|
*/
|
|
extern const char dxx_rebirth_veh_ud2[2], dxx_rebirth_veh_sp[2];
|
|
|
|
/*
|
|
* 64 bit registers use an R prefix; 32 bit registers use an E prefix.
|
|
* For this handler, they can be treated the same. Use a macro to
|
|
* expand to the proper name.
|
|
*
|
|
* Win32 uses a leading underscore on names, relative to the C name.
|
|
* Win64 does not. Use a macro to cover that difference.
|
|
*/
|
|
#ifdef WIN64
|
|
#define DXX_NT_CONTEXT_REGISTER(n) R##n
|
|
#define DXX_ASM_LABEL(L) "" L
|
|
#define DXX_WINDOWS_HOST_ARCH_W L"64"
|
|
#define DXX_REPORT_TEXT_LEADER_VERSION DXX_REPORT_TEXT_LEADER_VERSION_PREFIX "64"
|
|
#else
|
|
#define DXX_NT_CONTEXT_REGISTER(n) E##n
|
|
#define DXX_ASM_LABEL(L) "_" L
|
|
#define DXX_WINDOWS_HOST_ARCH_W L"86"
|
|
#define DXX_REPORT_TEXT_LEADER_VERSION DXX_REPORT_TEXT_LEADER_VERSION_PREFIX "86"
|
|
#endif
|
|
|
|
static LONG CALLBACK vectored_exception_handler(EXCEPTION_POINTERS *const ep)
|
|
{
|
|
const auto ctx = ep->ContextRecord;
|
|
auto &ip = ctx->DXX_NT_CONTEXT_REGISTER(ip);
|
|
auto &ax = ctx->DXX_NT_CONTEXT_REGISTER(ax);
|
|
const auto t = reinterpret_cast<dxx_trap_context *>(ax);
|
|
/*
|
|
* If the fault address is dxx_rebirth_veh_ud2, this is an expected
|
|
* fault forced solely to capture register context. This fault must
|
|
* always happen.
|
|
*/
|
|
if (ip == reinterpret_cast<uintptr_t>(dxx_rebirth_veh_ud2))
|
|
{
|
|
/*
|
|
* Copy the captured data into the faulting function's local
|
|
* variable. The address of that local was loaded into ax before
|
|
* triggering the fault.
|
|
*/
|
|
t->ExceptionRecord = *ep->ExceptionRecord;
|
|
t->ContextRecord = *ctx;
|
|
/* Step past the faulting instruction. */
|
|
ip += sizeof(dxx_rebirth_veh_ud2);
|
|
return EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
/*
|
|
* If the fault address is dxx_rebirth_veh_sp, this is an expected
|
|
* fault triggered by scanning up off the top of the stack. This
|
|
* fault usually happens, but might not if the exception happened
|
|
* with a sufficiently deep stack.
|
|
*/
|
|
else if (ip == reinterpret_cast<uintptr_t>(dxx_rebirth_veh_sp))
|
|
{
|
|
/*
|
|
* The faulting function arranged for ax to hold the terminating
|
|
* address of the search and for bx to hold the currently tested
|
|
* address. When the fault happens, bx points to an
|
|
* inaccessible byte. Set ax to point to that byte. Decrement
|
|
* bx to counter the guaranteed increment in the faulting
|
|
* function. The combination of these changes ensures that the
|
|
* (current != end) test fails, terminating the loop without
|
|
* provoking an additional fault.
|
|
*/
|
|
ax = ctx->DXX_NT_CONTEXT_REGISTER(bx)--;
|
|
/* Step past the faulting instruction. */
|
|
ip += sizeof(dxx_rebirth_veh_sp);
|
|
return EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
|
}
|
|
|
|
/* Ensure gcc does not clone the inline labels */
|
|
__attribute__((__noinline__,__noclone__,__warn_unused_result__))
|
|
static void *capture_exception_context(dxx_trap_context &dtc, const uint8_t *const sp)
|
|
{
|
|
const auto handler = AddVectoredExceptionHandler(1, &vectored_exception_handler);
|
|
if (handler)
|
|
{
|
|
dtc = {};
|
|
/*
|
|
* This block guarantees at least one and at most two faults to
|
|
* occur. Run it only if an exception handler was successfully
|
|
* added to catch these faults.
|
|
*/
|
|
asm volatile(
|
|
DXX_ASM_LABEL("dxx_rebirth_veh_ud2") ":\n"
|
|
/*
|
|
* Force a fault by executing a guaranteed undefined instruction. The
|
|
* fault handler will capture register context for a minidump, then step
|
|
* past this instruction.
|
|
*
|
|
* Before the fault, store the address of the `dxx_trap_context`
|
|
* instance `dtc` into ax for easy access by the fault handler. The
|
|
* fault handler then initializes dtc from the captured data. Mark
|
|
* memory as clobbered to prevent any speculative caching of `dtc`
|
|
* across the asm block. A narrower clobber could be used, but "memory"
|
|
* is sufficient and this code is not performance critical.
|
|
*/
|
|
" ud2\n"
|
|
:: "a" (&dtc) : "memory"
|
|
);
|
|
auto p = reinterpret_cast<uintptr_t>(sp);
|
|
for (auto e = p + dump_stack_bytes; p != e; ++p)
|
|
asm volatile(
|
|
DXX_ASM_LABEL("dxx_rebirth_veh_sp") ":\n"
|
|
/*
|
|
* Force a read of the address pointed at by [sp]. This must be done in
|
|
* assembly, not through a volatile C read, because the vectored
|
|
* exception handler must know the specific address of the read
|
|
* instruction.
|
|
*
|
|
* This may fault if the stack is not sufficiently deep. If a fault
|
|
* happens, the fault handler will adjust `e` and `p`, then step past
|
|
* the compare (although stepping past is not strictly necessary). On
|
|
* resume from the fault, the loop will find that the adjusted values
|
|
* make `++p` == `e`, causing the loop to terminate.
|
|
*/
|
|
" cmpb %%al,(%[sp])\n"
|
|
: "+a" (e),
|
|
[sp] "+b" (p)
|
|
:: "cc"
|
|
);
|
|
/*
|
|
* Save the address of the first inaccessible byte, rounded down
|
|
* to the nearest paragraph.
|
|
*/
|
|
dtc.end_sp = reinterpret_cast<const uint8_t *>(p & -dump_stack_stride);
|
|
RemoveVectoredExceptionHandler(handler);
|
|
}
|
|
return handler;
|
|
}
|
|
#undef DXX_ASM_LABEL
|
|
|
|
/*
|
|
* Initialize `path` with a path suitable to be used to write a minidump
|
|
* for the exception. Initialize `filename` to point to the first
|
|
* character in the filename (bypassing the directories).
|
|
*/
|
|
static unsigned prepare_exception_log_path(path_buffer &path, wchar_t *&filename, const unsigned pid)
|
|
{
|
|
const auto l = GetTempPathW(path.size(), path.data());
|
|
SYSTEMTIME st{};
|
|
GetSystemTime(&st);
|
|
/*
|
|
* Subsecond precision is not required. The program will terminate
|
|
* after writing this dump. No user is likely to be able to restart
|
|
* the game, and provoke a second dump, and on the same PID, within
|
|
* the same second.
|
|
*/
|
|
const auto r = l + _snwprintf(filename = path.data() + l, path.size() - l, L"%.4u-%.2u-%.2u-%.2u-%.2u-%.2u x" DXX_WINDOWS_HOST_ARCH_W L" P%u %hs.elog", st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond, pid, g_descent_version);
|
|
const auto extension = path.data() + r - 5;
|
|
wchar_t *p;
|
|
/*
|
|
* NTFS does not allow star in filenames. The expected content of
|
|
* this part of the filename will never contain an 's', so replace
|
|
* '*' with 's'. The filename will contain at most one star, but
|
|
* possibly none if the version string reported no unstaged changes.
|
|
* The position of the star varies depending on whether the version
|
|
* string also included a plus to report staged uncommitted changes.
|
|
*/
|
|
if (*(p = &extension[-1]) == '*' ||
|
|
*(p = &extension[-2]) == '*')
|
|
*p = 's';
|
|
return r;
|
|
}
|
|
|
|
#ifdef DXX_ENABLE_WINDOWS_MINIDUMP
|
|
using MiniDumpWriteDump_type = decltype(MiniDumpWriteDump);
|
|
static MiniDumpWriteDump_type *g_pMiniDumpWriteDump;
|
|
|
|
/*
|
|
* Write a minidump to the open file `h`, reported as being from pid
|
|
* `pid` with context from `dtc`. If `what` is not empty, include it as
|
|
* a comment stream. The caller uses this to pass the exception text
|
|
* (as returned by `std::exception::what()`) so that it will be easy to
|
|
* find in the debugger.
|
|
*/
|
|
static void write_exception_dump(dxx_trap_context &dtc, const unsigned pid, const std::string &what, const HANDLE h, const MiniDumpWriteDump_type *const pMiniDumpWriteDump)
|
|
{
|
|
MINIDUMP_EXCEPTION_INFORMATION mei;
|
|
MINIDUMP_USER_STREAM_INFORMATION musi;
|
|
EXCEPTION_POINTERS ep;
|
|
ep.ContextRecord = &dtc.ContextRecord;
|
|
ep.ExceptionRecord = &dtc.ExceptionRecord;
|
|
mei.ThreadId = GetCurrentThreadId();
|
|
mei.ExceptionPointers = &ep;
|
|
mei.ClientPointers = 0;
|
|
std::array<MINIDUMP_USER_STREAM, 5> mus;
|
|
std::array<char, 92> musTextVersion;
|
|
std::array<char, 44> musTextDateTime;
|
|
std::array<char, 512> musTextExceptionMessage;
|
|
unsigned UserStreamCount = 0;
|
|
{
|
|
auto &m = mus[UserStreamCount++];
|
|
m.Type = MINIDUMP_STREAM_TYPE::CommentStreamA;
|
|
static char leader[] = DXX_REPORT_TEXT_FORMAT_UUID;
|
|
m.BufferSize = sizeof(leader);
|
|
m.Buffer = leader;
|
|
}
|
|
{
|
|
auto &m = mus[UserStreamCount++];
|
|
m.Type = MINIDUMP_STREAM_TYPE::CommentStreamA;
|
|
m.BufferSize = g_strctxuuid.size();
|
|
m.Buffer = g_strctxuuid.data();
|
|
}
|
|
{
|
|
auto &m = mus[UserStreamCount++];
|
|
m.Type = MINIDUMP_STREAM_TYPE::CommentStreamA;
|
|
m.Buffer = musTextVersion.data();
|
|
m.BufferSize = 1 + std::snprintf(musTextVersion.data(), musTextVersion.size(), DXX_REPORT_TEXT_LEADER_VERSION " %s", g_descent_version);
|
|
}
|
|
{
|
|
auto &m = mus[UserStreamCount++];
|
|
m.Type = MINIDUMP_STREAM_TYPE::CommentStreamA;
|
|
m.Buffer = musTextDateTime.data();
|
|
m.BufferSize = 1 + std::snprintf(musTextDateTime.data(), musTextDateTime.size(), DXX_REPORT_TEXT_LEADER_BUILD_DATETIME "%s", g_descent_build_datetime);
|
|
}
|
|
if (!what.empty())
|
|
{
|
|
auto &m = mus[UserStreamCount++];
|
|
m.Type = MINIDUMP_STREAM_TYPE::CommentStreamA;
|
|
m.Buffer = musTextExceptionMessage.data();
|
|
m.BufferSize = 1 + std::snprintf(musTextExceptionMessage.data(), musTextExceptionMessage.size(), DXX_REPORT_TEXT_LEADER_EXCEPTION_MESSAGE "%s", what.c_str());
|
|
}
|
|
musi.UserStreamCount = UserStreamCount;
|
|
musi.UserStreamArray = mus.data();
|
|
(*pMiniDumpWriteDump)(GetCurrentProcess(), pid, h, MiniDumpWithFullMemory, &mei, &musi, nullptr);
|
|
}
|
|
|
|
/*
|
|
* Open the file named by `path` for write. On success, call
|
|
* `write_exception_dump` above with that handle. On failure, clear the
|
|
* path so that the later UI code does not tell the user about a file
|
|
* that does not exist.
|
|
*/
|
|
static void write_exception_dump(dxx_trap_context &dtc, const unsigned pid, const std::string &what, path_buffer &path, const MiniDumpWriteDump_type *const pMiniDumpWriteDump)
|
|
{
|
|
if (RAII_Windows_FILE_HANDLE h{CreateFileW(path.data(), GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)})
|
|
write_exception_dump(dtc, pid, what, h, pMiniDumpWriteDump);
|
|
else
|
|
path.front() = 0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Write a plain text dump of metadata and a hex dump of the faulting
|
|
* stack.
|
|
*/
|
|
static void write_exception_stack(const wchar_t *const filename, const unsigned pid, const uint8_t *const begin_sp, const dxx_trap_context &dtc, const std::string &what, const HANDLE h)
|
|
{
|
|
std::array<char, 4096> buf;
|
|
buf = {};
|
|
const auto len_header_text = std::snprintf(buf.data(), buf.size(),
|
|
"Rebirth exception printed context\n"
|
|
DXX_REPORT_TEXT_FORMAT_UUID "\n"
|
|
"%.50s\n"
|
|
DXX_REPORT_TEXT_LEADER_VERSION " %s\n"
|
|
DXX_REPORT_TEXT_LEADER_BUILD_DATETIME "%s\n"
|
|
"Rebirth PID: %u\n"
|
|
"Report date-time: %.19ls\n"
|
|
DXX_REPORT_TEXT_LEADER_EXCEPTION_MESSAGE "\"%s\"\n"
|
|
"UD2 IP: %p\n"
|
|
"SP: %p\n"
|
|
"\n"
|
|
, g_strctxuuid.data(), g_descent_version, g_descent_build_datetime, pid, filename, what.c_str(), reinterpret_cast<const uint8_t *>(dtc.ContextRecord.DXX_NT_CONTEXT_REGISTER(ip)), begin_sp
|
|
);
|
|
/*
|
|
* end_sp is rounded down to a paragraph boundary.
|
|
* Round sp the same way so that there will exist an integer N such
|
|
* that (`sp` + (N * `dump_stack_stride`)) == `end_sp`.
|
|
*/
|
|
const auto sp = reinterpret_cast<const uint8_t *>(reinterpret_cast<uintptr_t>(begin_sp) & -dump_stack_stride);
|
|
DWORD dwWritten;
|
|
WriteFile(h, buf.data(), len_header_text, &dwWritten, 0);
|
|
const auto end_sp = dtc.end_sp;
|
|
for (unsigned i = 0; i < dump_stack_bytes; i += dump_stack_stride)
|
|
{
|
|
char hexdump[dump_stack_stride + 1];
|
|
const auto base_paragraph_pointer = &sp[i];
|
|
if (base_paragraph_pointer == end_sp)
|
|
break;
|
|
hexdump[dump_stack_stride] = 0;
|
|
for (unsigned j = dump_stack_stride; j--;)
|
|
{
|
|
const uint8_t c = reinterpret_cast<const uint8_t *>(base_paragraph_pointer)[j];
|
|
hexdump[j] = (c >= ' ' && c <= '~') ? c : '.';
|
|
}
|
|
buf = {};
|
|
#define FORMAT_PADDED_UINT8_4 " %.2x %.2x %.2x %.2x "
|
|
#define VAR_PADDED_UINT8_4(I) sp[I], sp[I + 1], sp[I + 2], sp[I + 3]
|
|
const auto len_line_text = std::snprintf(buf.data(), buf.size(),
|
|
"%p: " FORMAT_PADDED_UINT8_4 FORMAT_PADDED_UINT8_4 FORMAT_PADDED_UINT8_4 FORMAT_PADDED_UINT8_4 " %s\n"
|
|
, base_paragraph_pointer, VAR_PADDED_UINT8_4(i), VAR_PADDED_UINT8_4(i + 4), VAR_PADDED_UINT8_4(i + 8), VAR_PADDED_UINT8_4(i + 12), hexdump);
|
|
#undef VAR_PADDED_UINT8_4
|
|
#undef FORMAT_PADDED_UINT8_4
|
|
WriteFile(h, buf.data(), len_line_text, &dwWritten, 0);
|
|
}
|
|
}
|
|
|
|
static void write_exception_stack(const wchar_t *const filename, const unsigned pid, const uint8_t *const sp, const dxx_trap_context &dtc, const std::string &what, path_buffer &path)
|
|
{
|
|
if (RAII_Windows_FILE_HANDLE h{CreateFileW(path.data(), GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)})
|
|
write_exception_stack(filename, pid, sp, dtc, what, h);
|
|
else
|
|
path.front() = 0;
|
|
}
|
|
|
|
/*
|
|
* Prevent moving the large `dxx_trap_context` into the caller.
|
|
* The caller captures the stack pointer before this function begins.
|
|
* The captured value should exclude the locals of this function, so
|
|
* that the data printed from the captured value covers the stack used
|
|
* prior to the throw which triggered the terminate handler. If this
|
|
* function were inlined into the caller, the captured stack pointer
|
|
* would include the locals of this function.
|
|
*/
|
|
__attribute__((__noinline__,__noclone__))
|
|
static void write_exception_logs(const uint8_t *const sp)
|
|
{
|
|
std::string what;
|
|
try {
|
|
/*
|
|
* Rethrow the faulting exception, then catch it to extract its
|
|
* explanatory text.
|
|
*/
|
|
std::rethrow_exception(std::current_exception());
|
|
} catch (const std::exception &ee) {
|
|
what = ee.what();
|
|
} catch (...) {
|
|
}
|
|
#ifdef DXX_ENABLE_WINDOWS_MINIDUMP
|
|
path_buffer path_dump;
|
|
#define DXX_PATH_DUMP_FORMAT_STRING L"%s%s\n"
|
|
#define DXX_PATH_DUMP_ARGUMENTS \
|
|
, path_dump.front() ? L"If possible, make available the binary file:\n " : L"No dump file could be generated." \
|
|
, path_dump.data()
|
|
#else
|
|
#define DXX_PATH_DUMP_FORMAT_STRING \
|
|
L"Dump file generation is not enabled in this build.\n"
|
|
#define DXX_PATH_DUMP_ARGUMENTS
|
|
#endif
|
|
path_buffer path_stack;
|
|
dxx_trap_context dtc;
|
|
if (capture_exception_context(dtc, sp))
|
|
{
|
|
const unsigned pid = GetCurrentProcessId();
|
|
wchar_t *filename;
|
|
const auto pl = prepare_exception_log_path(path_stack, filename, pid);
|
|
#ifdef DXX_ENABLE_WINDOWS_MINIDUMP
|
|
path_dump = path_stack;
|
|
wcscpy(&path_dump[pl - 4], L"mdmp");
|
|
if (const auto pMiniDumpWriteDump = g_pMiniDumpWriteDump)
|
|
write_exception_dump(dtc, pid, what, path_dump, pMiniDumpWriteDump);
|
|
else
|
|
path_dump.front() = 0;
|
|
#else
|
|
(void)pl;
|
|
#endif
|
|
write_exception_stack(filename, pid, sp, dtc, what, path_stack);
|
|
}
|
|
else
|
|
{
|
|
#ifdef DXX_ENABLE_WINDOWS_MINIDUMP
|
|
path_dump.front() = 0;
|
|
#endif
|
|
path_stack.front() = 0;
|
|
}
|
|
std::array<wchar_t, 1024> msg;
|
|
_snwprintf(msg.data(), msg.size(),
|
|
L"Rebirth encountered a fatal error. Please report this to the developers.\n"
|
|
L"\nInclude in your report:\n"
|
|
L"%s%hs%s"
|
|
L"* The level(s) played this session, including download URLs for any add-on missions\n"
|
|
L"%s%s\n\n"
|
|
DXX_PATH_DUMP_FORMAT_STRING
|
|
L"\nTo the extent possible, provide steps to reproduce, starting from the game main menu.",
|
|
what.empty() ? L"" : L"* The exception message text:\n \"", what.c_str(), what.empty() ? L"" : L"\"\n",
|
|
path_stack.front() ? L"* The contents of the text file:\n " : L"", path_stack.data()
|
|
DXX_PATH_DUMP_ARGUMENTS
|
|
);
|
|
#undef DXX_PATH_DUMP_ARGUMENTS
|
|
#undef DXX_PATH_DUMP_FORMAT_STRING
|
|
MessageBoxW(NULL, msg.data(), L"Rebirth - Fatal Error", MB_ICONERROR | MB_TOPMOST | MB_TASKMODAL);
|
|
}
|
|
|
|
[[noreturn]]
|
|
static void terminate_handler()
|
|
{
|
|
const uint8_t *sp;
|
|
asm(
|
|
#ifdef WIN64
|
|
"movq %%rsp, %[sp]"
|
|
#else
|
|
"movl %%esp, %[sp]"
|
|
#endif
|
|
: [sp] "=rm" (sp));
|
|
write_exception_logs(sp);
|
|
ExitProcess(0);
|
|
}
|
|
|
|
void d_set_exception_handler()
|
|
{
|
|
std::set_terminate(&terminate_handler);
|
|
std::array<wchar_t, MAX_PATH> ws;
|
|
if (const auto lws = GetSystemDirectoryW(ws.data(), ws.size()))
|
|
{
|
|
if (auto &&rpcrt4 = RAII_Windows_DynamicSharedObject::Load(ws, lws, L"\\rpcrt4.dll"))
|
|
{
|
|
if (const auto pUuidCreate = rpcrt4.GetProc<decltype(UuidCreate)>("UuidCreate"))
|
|
{
|
|
UUID ctxuuid;
|
|
/*
|
|
* Create a UUID specific to this run.
|
|
*/
|
|
if (SUCCEEDED((*pUuidCreate)(&ctxuuid)))
|
|
{
|
|
std::snprintf(g_strctxuuid.data(), g_strctxuuid.size(), "Context UUID: %08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x", ctxuuid.Data1, ctxuuid.Data2, ctxuuid.Data3, ctxuuid.Data4[0], ctxuuid.Data4[1], ctxuuid.Data4[2], ctxuuid.Data4[3], ctxuuid.Data4[4], ctxuuid.Data4[5], ctxuuid.Data4[6], ctxuuid.Data4[7]);
|
|
}
|
|
}
|
|
}
|
|
#ifdef DXX_ENABLE_WINDOWS_MINIDUMP
|
|
if (auto &&dbghelp = RAII_Windows_DynamicSharedObject::Load(ws, lws, L"\\dbghelp.dll"))
|
|
{
|
|
if ((g_pMiniDumpWriteDump = dbghelp.GetProc<decltype(MiniDumpWriteDump)>("MiniDumpWriteDump")))
|
|
dbghelp.release();
|
|
}
|
|
#endif
|
|
}
|
|
}
|