X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=platform%2Fwin32%2Fcrt0.c;h=7da2a8151e2ad3b279e0c9005d45b8b56b22c919;hb=9139768cecb777324d8d8e420f01bb41d62a8bbc;hp=fcdee084eec3362453825028447a6443d564e463;hpb=950d2e48042173a75188b0a2dbe219ed91ff47cf;p=pdclib.old

diff --git a/platform/win32/crt0.c b/platform/win32/crt0.c
index fcdee08..7da2a81 100644
--- a/platform/win32/crt0.c
+++ b/platform/win32/crt0.c
@@ -1,7 +1,10 @@
-#include <windows.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <signal.h>
+#include <threads.h>
+#include <wchar.h> // Watcom bug: winnt.h assumes string.h defines wchar_t
+#include <windows.h>
 
 static char ** argvToAnsi( wchar_t ** wargv, int argc )
 {
@@ -21,6 +24,7 @@ static char ** argvToAnsi( wchar_t ** wargv, int argc )
         if(rv != sz) {
             fputs("Error in C runtime initialization: "
                   "size mismatch during character set conversion", stderr);
+            abort();
         }
     }
     return argv;
@@ -40,18 +44,86 @@ static void freeArgs( void )
     LocalFree( wargv );
 }
 
+extern void (*_PDCLIB_sigfpe)( int );
+extern void (*_PDCLIB_sigill)( int );
+extern void (*_PDCLIB_sigsegv)( int );
+
+static LPTOP_LEVEL_EXCEPTION_FILTER oldFilter;
+static LONG CALLBACK sehExceptionFilter( EXCEPTION_POINTERS * exInfo )
+{
+    int sig;
+    void (*handler)( int );
+
+    switch( exInfo->ExceptionRecord->ExceptionCode ) {
+        case EXCEPTION_ACCESS_VIOLATION:
+        case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
+        case EXCEPTION_DATATYPE_MISALIGNMENT:
+        case EXCEPTION_GUARD_PAGE:
+        case EXCEPTION_IN_PAGE_ERROR:
+        case EXCEPTION_STACK_OVERFLOW:
+            sig = SIGSEGV;
+            handler = _PDCLIB_sigsegv;
+            break;
+
+        case EXCEPTION_ILLEGAL_INSTRUCTION:
+        case EXCEPTION_PRIV_INSTRUCTION:
+            sig = SIGILL;
+            handler = _PDCLIB_sigill;
+            break;
+
+        case EXCEPTION_INT_DIVIDE_BY_ZERO:
+        case EXCEPTION_INT_OVERFLOW:
+        case EXCEPTION_FLT_DENORMAL_OPERAND:
+        case EXCEPTION_FLT_DIVIDE_BY_ZERO:
+        case EXCEPTION_FLT_INEXACT_RESULT:
+        case EXCEPTION_FLT_INVALID_OPERATION:
+        case EXCEPTION_FLT_OVERFLOW:
+        case EXCEPTION_FLT_STACK_CHECK:
+        case EXCEPTION_FLT_UNDERFLOW:
+            sig = SIGFPE;
+            handler = _PDCLIB_sigfpe;
+            break;
+
+        default:
+            return oldFilter ? oldFilter( exInfo ) : EXCEPTION_EXECUTE_HANDLER;
+    }
+
+    if(handler == SIG_DFL) {
+        return EXCEPTION_EXECUTE_HANDLER;
+    } else if(handler == SIG_IGN) {
+        return EXCEPTION_CONTINUE_EXECUTION;
+    } else {
+        handler( sig );
+        return EXCEPTION_CONTINUE_EXECUTION;
+    }
+}
+
 extern int main( int argc, char ** argv, char ** envp );
-_PDCLIB_noreturn void mainCRTStartup( void ) 
+
+void __cdecl mainCRTStartup( void );
+
+void __cdecl mainCRTStartup( void ) 
 {
     stdin->handle  = GetStdHandle(STD_INPUT_HANDLE);
     stdout->handle = GetStdHandle(STD_OUTPUT_HANDLE);
     stderr->handle = GetStdHandle(STD_ERROR_HANDLE);
 
+    oldFilter = SetUnhandledExceptionFilter( sehExceptionFilter );
+
     cl    = GetCommandLineW();
     wargv = CommandLineToArgvW(cl, &argc);
     argv  = argvToAnsi(wargv, argc);
+
+    if(        mtx_init(&stdin->lock, mtx_recursive) != thrd_success 
+            || mtx_init(&stdout->lock, mtx_recursive) != thrd_success
+            || mtx_init(&stderr->lock, mtx_recursive) != thrd_success ) {
+        fputs( "Error during C runtime initialization: "
+            "Unable to allocate stdio mutex", stderr );
+    }
+
     atexit(freeArgs);
 
     int exitStatus = main(argc, argv, NULL);
+
     exit(exitStatus);
-}
+}
\ No newline at end of file