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https://github.com/FunkyFr3sh/cnc-ddraw.git
synced 2025-03-15 06:04:49 +01:00
add testing code for privileged instructions
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parent
7febf01343
commit
e0e59cd9fa
@ -64,6 +64,7 @@ typedef struct CNCDDRAWCONFIG
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BOOL fix_alt_key_stuck;
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BOOL fix_not_responding;
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BOOL no_compat_warning;
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BOOL ignore_exceptions;
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BOOL wine_allow_resize;
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int guard_lines;
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int max_resolutions;
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@ -77,6 +77,7 @@ void cfg_load()
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GET_BOOL(GameHandlesClose, "game_handles_close", FALSE);
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GET_BOOL(g_config.fix_not_responding, "fix_not_responding", FALSE);
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GET_BOOL(g_config.no_compat_warning, "no_compat_warning", FALSE);
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GET_BOOL(g_config.ignore_exceptions, "ignore_exceptions", FALSE);
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GET_BOOL(g_config.wine_allow_resize, "wine_allow_resize", FALSE);
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GET_INT(g_config.guard_lines, "guard_lines", 200);
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GET_INT(g_config.max_resolutions, "max_resolutions", 0);
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@ -309,6 +310,7 @@ static void cfg_create_ini()
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"game_handles_close=false\n"
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"fix_not_responding=false\n"
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"no_compat_warning=false\n"
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"ignore_exceptions=false\n"
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"wine_allow_resize=false\n"
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"guard_lines=200\n"
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"max_resolutions=0\n"
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169
src/debug.c
169
src/debug.c
@ -14,6 +14,8 @@
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#include "versionhelpers.h"
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#include "utils.h"
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#include "dllmain.h"
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#include "config.h"
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#include "patch.h"
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double g_dbg_frame_time = 0;
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@ -35,59 +37,98 @@ static int g_dbg_crash_count = 0;
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LONG WINAPI dbg_exception_handler(EXCEPTION_POINTERS* exception)
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{
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g_dbg_crash_count++;
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HANDLE dmp =
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CreateFile(
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g_dbg_crash_count == 1 ? g_dbg_dmp_path1 : g_dbg_dmp_path2,
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_WRITE | FILE_SHARE_READ,
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0,
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CREATE_ALWAYS,
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0,
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0);
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if (dmp != INVALID_HANDLE_VALUE)
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if (!exception || !exception->ExceptionRecord)
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{
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MINIDUMP_EXCEPTION_INFORMATION info;
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info.ThreadId = GetCurrentThreadId();
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info.ExceptionPointers = exception;
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info.ClientPointers = TRUE;
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if (g_dbg_exception_filter)
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return g_dbg_exception_filter(exception);
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MiniDumpWriteDump(
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GetCurrentProcess(),
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GetCurrentProcessId(),
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dmp,
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0,
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&info,
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NULL,
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NULL);
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CloseHandle(dmp);
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return EXCEPTION_EXECUTE_HANDLER;
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}
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if (exception && exception->ExceptionRecord)
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if (exception->ExceptionRecord->ExceptionCode != STATUS_PRIVILEGED_INSTRUCTION || !g_config.ignore_exceptions)
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{
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HMODULE mod = NULL;
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char filename[MAX_PATH] = { 0 };
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g_dbg_crash_count++;
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HANDLE dmp =
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CreateFile(
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g_dbg_crash_count == 1 ? g_dbg_dmp_path1 : g_dbg_dmp_path2,
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_WRITE | FILE_SHARE_READ,
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0,
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CREATE_ALWAYS,
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0,
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0);
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if (dmp != INVALID_HANDLE_VALUE)
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{
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MINIDUMP_EXCEPTION_INFORMATION info;
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info.ThreadId = GetCurrentThreadId();
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info.ExceptionPointers = exception;
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info.ClientPointers = TRUE;
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MiniDumpWriteDump(
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GetCurrentProcess(),
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GetCurrentProcessId(),
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dmp,
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0,
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&info,
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NULL,
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NULL);
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CloseHandle(dmp);
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}
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}
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HMODULE mod = NULL;
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char filename[MAX_PATH] = { 0 };
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#if defined(_MSC_VER) /* comment this out just to keep the mingw build win2000 compatible */
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if (GetModuleHandleExA(
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GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
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exception->ExceptionRecord->ExceptionAddress,
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&mod))
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{
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GetModuleFileNameA(mod, filename, sizeof(filename) - 1);
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}
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if (GetModuleHandleExA(
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GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
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exception->ExceptionRecord->ExceptionAddress,
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&mod))
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{
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GetModuleFileNameA(mod, filename, sizeof(filename) - 1);
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}
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#endif
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TRACE(
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"Exception at %p (%p+%p), Code=%08X - %s\n",
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exception->ExceptionRecord->ExceptionAddress,
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mod,
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(int)exception->ExceptionRecord->ExceptionAddress - (int)mod,
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exception->ExceptionRecord->ExceptionCode,
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filename);
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TRACE(
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"Exception at %p (%p+%p), Code=%08X - %s\n",
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exception->ExceptionRecord->ExceptionAddress,
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mod,
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(int)exception->ExceptionRecord->ExceptionAddress - (int)mod,
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exception->ExceptionRecord->ExceptionCode,
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filename);
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if (g_config.ignore_exceptions &&
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exception->ContextRecord &&
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exception->ExceptionRecord->ExceptionAddress &&
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exception->ExceptionRecord->ExceptionCode == STATUS_PRIVILEGED_INSTRUCTION)
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{
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size_t size = 0;
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BYTE* addr = exception->ExceptionRecord->ExceptionAddress;
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switch (*addr)
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{
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case 0xE4: // IN ib
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case 0xE5: // IN id
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case 0xE6: // OUT ib
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case 0xE7: // OUT ib
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size = 2;
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break;
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case 0xEC: // IN ib
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case 0xED: // IN id
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case 0xEE: // OUT
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case 0xEF: // OUT
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size = 1;
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break;
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}
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if (size)
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{
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exception->ContextRecord->Eip += size;
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patch_clear((void*)addr, 0x90, (char*)addr + size);
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return EXCEPTION_CONTINUE_EXECUTION;
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}
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}
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if (g_dbg_exception_filter)
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@ -111,6 +152,46 @@ void __cdecl dbg_invoke_watson(
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TerminateProcess(GetCurrentProcess(), STATUS_INVALID_CRUNTIME_PARAMETER);
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}
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#else
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LONG WINAPI dbg_exception_handler(EXCEPTION_POINTERS* exception)
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{
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if (exception &&
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exception->ContextRecord &&
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exception->ExceptionRecord &&
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exception->ExceptionRecord->ExceptionAddress &&
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exception->ExceptionRecord->ExceptionCode == STATUS_PRIVILEGED_INSTRUCTION)
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{
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size_t size = 0;
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BYTE* addr = exception->ExceptionRecord->ExceptionAddress;
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switch (*addr)
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{
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case 0xE4: // IN ib
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case 0xE5: // IN id
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case 0xE6: // OUT ib
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case 0xE7: // OUT ib
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size = 2;
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break;
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case 0xEC: // IN ib
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case 0xED: // IN id
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case 0xEE: // OUT
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case 0xEF: // OUT
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size = 1;
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break;
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}
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if (size)
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{
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exception->ContextRecord->Eip += size;
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patch_clear((void*)addr, 0x90, (char*)addr + size);
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return EXCEPTION_CONTINUE_EXECUTION;
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}
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}
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if (g_dbg_exception_filter)
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return g_dbg_exception_filter(exception);
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return EXCEPTION_EXECUTE_HANDLER;
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}
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#endif
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void dbg_init()
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@ -43,9 +43,14 @@ BOOL WINAPI DllMain(HANDLE hDll, DWORD dwReason, LPVOID lpReserved)
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#ifdef _DEBUG
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dbg_init();
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g_dbg_exception_filter = real_SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER)dbg_exception_handler);
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#endif
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cfg_load();
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#else
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cfg_load();
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if (g_config.ignore_exceptions)
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{
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g_dbg_exception_filter = real_SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER)dbg_exception_handler);
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}
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#endif
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char buf[1024];
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