Dll autoload

Kernel
- removed unnecessary and rewrote/add some comments, no code changes
User (lib/dll.obj)   
- Introduced new KX header as extension for existing formats
- Added staring KX header processing
- Improved import table test logic, no reason to kill app for import absence - skip 
  import processing (tnx ProMiNick)
- Add ReadMe.txt


git-svn-id: svn://kolibrios.org@8709 a494cfbc-eb01-0410-851d-a64ba20cac60

kernel/trunk/core/taskman.inc

@@ -834,6 +834,8 @@ common_app_entry:
         mov     ebp, [ebp+APPDATA.exec_params]
         test    ebp, ebp
         jz      .exit
+; APPDATA.exec_params have first thread only,
+; so second and next threads don't get here (they jump to .exit) 
         stdcall map_process_image, [ebp+APP_HDR._emem],\
                 [ebp+APP_HDR.img_base], [ebp+APP_HDR.img_size]
         mov     esi, [ebp+APP_HDR.path_string]
@@ -892,54 +894,35 @@ common_app_entry:
         mov     [tls_data_l+7], ah
         mov     dx, app_tls
         mov     fs, dx       
-; { Patch by Coldy, For DLL autoload 
-;   if APP_HEADER.version = 2 => lib/load dll.obj & change eip to APP_START_THUNK)
-.try_load_dll:
-; TODO: It;s app, not thread?
-           
-; Test app header version (
+; { Patch by Coldy, For DLL autoload    
+.try_load_dll:         
+; Test app header version 
         mov     ecx, dword[ebp+APP_HDR.img_base]
-        ;DEBUGF 1, "K : ecx = %d\n", [ecx+8]
         cmp     dword[ecx+8], 2
         jne     .cleanup
+;if APP_HEADER.version = 2 => load lib/dll.obj & change eip to APP_STARTUP_THUNK
         DEBUGF 1, 'K : App header version 2\n'
-        ;DEBUGF 1, "K : DLL.OBJ path: %s\n", dll_lib_path
         stdcall load_library, dll_lib_path, 0
-        ;DEBUGF 1, "K : DLL.OBJ exp ptr: %x\n", eax
-        
-        ;test eax, eax
-        ;jnz @f
         cmp     eax, 0
         jne     @f
-; Something went wrong 
+; Something went wrong (TODO: Next 2 line is code copy after .cleanup)  
         stdcall free_kernel_space, [ebp+APP_HDR.img_base]
         stdcall kernel_free, ebp
-        DEBUGF 1, 'K : DLL.OBJ not found! Terminate application!'
+        DEBUGF 1, 'K : DLL.OBJ not found! Terminate application!\n'
         mov     ebx, dll_error_msg
         mov     ebp, notifyapp
         call    fs_execute_from_sysdir_param
-; Terminate process 
+; Terminate process (TODO: Need jump to .cleanup after sys_end ?) 
         call    sys_end
         
 @@:       
-        ; Find base of DLL.OBJ
-        ;mov     ebx, eax
-        ;cdq
-        ;mov     ecx, 0x00000400
-        ;div     ecx
-        ;sub     ebx, edx
+; Find APP_STARTUP_THUNK in DLL.OBJ
         sub     eax, 4
-        mov     eax, [eax]   
-        ;DEBUGF 1, "K : DLL.OBJ base ptr: %x\n", eax
-        
-; load_library don't map coff header,
-; so we may change entry point for app APP_START_THUNK
-; to base of DLL.OBJ
+        mov     eax, [eax]
         
 ;.change_eip:
         mov     ecx, [current_slot]
         mov     ecx, [ecx+APPDATA.pl0_stack]
-        ;DEBUGF 1, "K : EIP = %x\n", ebx
         mov     [ecx+REG_EIP], eax
         
 ; } End patch by Coldy, For DLL autoload