Kernel/VFS - Better error reporting in open

[tpg/acess2.git] / KernelLand / Kernel / drvutil_video.c

diff --git a/KernelLand/Kernel/drvutil_video.c b/KernelLand/Kernel/drvutil_video.c
index c8b044e..2bffb1a 100644 (file)
--- a/KernelLand/Kernel/drvutil_video.c
+++ b/KernelLand/Kernel/drvutil_video.c
@@ -480,7 +480,8 @@ void DrvUtil_Video_RenderCursor(tDrvUtil_Video_BufInfo *Buf)
        {
        case 15:
        case 16:
-               Log_Warning("DrvUtil", "TODO: Support 15/16 bpp modes in cursor draw");
+               //Log_Warning("DrvUtil", "TODO: Support 15/16 bpp modes in cursor draw");
+               //Proc_PrintBacktrace();
                break;
        case 24:
                LOG("24-bit render");
@@ -535,8 +536,6 @@ void DrvUtil_Video_RenderCursor(tDrvUtil_Video_BufInfo *Buf)
 void DrvUtil_Video_RemoveCursor(tDrvUtil_Video_BufInfo *Buf)
 {
         int    bytes_per_px = (Buf->Depth + 7) / 8;
-        int    y, save_pitch;
-       Uint8   *dest, *src;
 
        // Just a little sanity
        if( !Buf->CursorBitmap || Buf->CursorX == -1 )  return ;
@@ -545,16 +544,21 @@ void DrvUtil_Video_RemoveCursor(tDrvUtil_Video_BufInfo *Buf)
 //     Debug("DrvUtil_Video_RemoveCursor: (Buf=%p) dest_x=%i, dest_y=%i", Buf, Buf->CursorDestX, Buf->CursorDestY);
 
        // Set up
-       save_pitch = Buf->CursorBitmap->W * bytes_per_px;
-       dest = (Uint8*)Buf->Framebuffer + Buf->CursorDestY * Buf->Pitch + Buf->CursorDestX*bytes_per_px;
-       src = Buf->CursorSaveBuf;
-       
+       size_t  save_pitch = Buf->CursorBitmap->W * bytes_per_px;
+       Uint8   *dst = (Uint8*)Buf->Framebuffer + Buf->CursorDestY * Buf->Pitch + Buf->CursorDestX*bytes_per_px;
+       const Uint8     *src = Buf->CursorSaveBuf;
+
+       ASSERT(Buf->Framebuffer);
+       ASSERT(src);
+       ASSERT(CheckMem(dst, Buf->CursorRenderH*Buf->Pitch));
+       ASSERT(CheckMem(src, Buf->CursorRenderH*save_pitch));
+
        // Copy each line back
-       for( y = 0; y < Buf->CursorRenderH; y ++ )
+       for( int y = 0; y < Buf->CursorRenderH; y ++ )
        {
-               memcpy( dest, src, Buf->CursorRenderW * bytes_per_px );
+               memcpy( dst, src, Buf->CursorRenderW * bytes_per_px );
                src += save_pitch;
-               dest += Buf->Pitch;
+               dst += Buf->Pitch;
        }
        
        // Set the cursor as removed