From c30c9e5b52d56ca75d11d87067b51fedfd9652a4 Mon Sep 17 00:00:00 2001
From: "Alexey Teplov (" <Lrz) 200_u_200@mail.ru>
Date: Wed, 16 Jun 2010 15:56:03 +0000
Subject: [PATCH] 61 system function.

git-svn-id: svn://kolibrios.org@1497 a494cfbc-eb01-0410-851d-a64ba20cac60
---
 kernel/trunk/core/syscall.inc |  4 +--
 kernel/trunk/kernel.asm       | 46 ++++++++++++++++++++++-------------
 2 files changed, 31 insertions(+), 19 deletions(-)

diff --git a/kernel/trunk/core/syscall.inc b/kernel/trunk/core/syscall.inc
index 89b5280d0a..a62c454d29 100644
--- a/kernel/trunk/core/syscall.inc
+++ b/kernel/trunk/core/syscall.inc
@@ -163,7 +163,7 @@ iglobal
       dd file_system             ; 58-Common file system interface
       dd 0
       dd 0
-      dd sys_gs                  ; 61-Direct graphics access
+      dd 0
       dd sys_pci                 ; 62-PCI functions
       dd sys_msg_board           ; 63-System message board
 
@@ -234,7 +234,7 @@ iglobal
       dd cross_order             ; 58-Common file system interface
       dd undefined_syscall       ; 59-reserved
       dd sys_IPC		 ; 60-Inter Process Communication
-      dd cross_order             ; 61-Direct graphics access
+      dd sys_gs			 ; 61-Direct graphics access
       dd cross_order             ; 62-PCI functions
       dd cross_order             ; 63-System message board
       dd sys_resize_app_memory   ; 64-Resize application memory usage
diff --git a/kernel/trunk/kernel.asm b/kernel/trunk/kernel.asm
index 8b4f0834ba..23912fce5a 100644
--- a/kernel/trunk/kernel.asm
+++ b/kernel/trunk/kernel.asm
@@ -4569,35 +4569,47 @@ sys_process_def:
         mov     [esp+32], edx
         ret
 
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; 61 sys function.                                                ;;
+;; in eax=61,ebx in [1..3]                                         ;;
+;; out eax                                                         ;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+iglobal
+align 4
+f61call:
+           dd sys_gs.1   ; resolution
+           dd sys_gs.2   ; bits per pixel
+           dd sys_gs.3   ; bytes per scanline
+endg
+
+
 align 4
 
 sys_gs:                         ; direct screen access
+	dec	ebx
+	cmp	ebx,2
+	ja	.not_support
+	jmp	dword [f61call+ebx*4]
+.not_support:
+	or  [esp+32],dword -1
+        ret
 
-     cmp  eax,1                 ; resolution
-     jne  no_gs1
+
+.1:                             ; resolution
      mov  eax,[Screen_Max_X]
      shl  eax,16
      mov  ax,[Screen_Max_Y]
      add  eax,0x00010001
-     mov  [esp+36],eax
+     mov  [esp+32],eax
      ret
-   no_gs1:
-
-     cmp   eax,2                ; bits per pixel
-     jne   no_gs2
+.2:				; bits per pixel
      movzx eax,byte [ScreenBPP]
-     mov   [esp+36],eax
+     mov   [esp+32],eax
      ret
-   no_gs2:
-
-     cmp   eax,3                ; bytes per scanline
-     jne   no_gs3
+.3:                             ; bytes per scanline
      mov   eax,[BytesPerScanLine]
-     mov   [esp+36],eax
-     ret
-   no_gs3:
-
-     or  [esp+36],dword -1
+     mov   [esp+32],eax
      ret