From ce96116465ff9da95a75e99f28e0830ec7f86fee Mon Sep 17 00:00:00 2001
From: "Marat Zakiyanov (Mario79)" <mario79@bk.ru>
Date: Tue, 25 Feb 2014 01:03:37 +0000
Subject: [PATCH] Function 2 (get the code of the pressed key) for AL = 0 in
 EAX bits 16-23 = contain scancode for pressed key

git-svn-id: svn://kolibrios.org@4588 a494cfbc-eb01-0410-851d-a64ba20cac60
---
 kernel/trunk/const.inc         | 2 +-
 kernel/trunk/docs/sysfuncr.txt | 3 ++-
 kernel/trunk/docs/sysfuncs.txt | 4 +++-
 kernel/trunk/gui/event.inc     | 6 +++++-
 kernel/trunk/hid/keyboard.inc  | 7 ++++++-
 kernel/trunk/kernel.asm        | 7 ++++++-
 6 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/kernel/trunk/const.inc b/kernel/trunk/const.inc
index 27d5c33dc..70a51b54e 100644
--- a/kernel/trunk/const.inc
+++ b/kernel/trunk/const.inc
@@ -205,7 +205,7 @@ FDD_BUFF            equ (OS_BASE+0x000D000)     ;512
 
 WIN_TEMP_XY         equ (OS_BASE+0x000F300)
 KEY_COUNT           equ (OS_BASE+0x000F400)
-KEY_BUFF            equ (OS_BASE+0x000F401)
+KEY_BUFF            equ (OS_BASE+0x000F401) ; 120*2 + 2*2 = 244 bytes, actually 255 bytes
 
 BTN_COUNT           equ (OS_BASE+0x000F500)
 BTN_BUFF            equ (OS_BASE+0x000F501)
diff --git a/kernel/trunk/docs/sysfuncr.txt b/kernel/trunk/docs/sysfuncr.txt
index eec630d53..93b3c01bf 100644
--- a/kernel/trunk/docs/sysfuncr.txt
+++ b/kernel/trunk/docs/sysfuncr.txt
@@ -151,7 +151,8 @@
 Возвращаемое значение:
   * если буфер пуст, возвращается eax=1
   * если буфер непуст, то возвращается al=0, ah=код нажатой клавиши,
-    старшее слово регистра eax обнулено
+    биты 16-23 содержат сканкод нажатой клавиши,
+    биты 23-31 обнулены
   * если есть "горячая клавиша", то возвращается
     al=2, ah=сканкод нажатой клавиши (0 для управляющих клавиш),
     старшее слово регистра eax содержит состояние управляющих клавиш
diff --git a/kernel/trunk/docs/sysfuncs.txt b/kernel/trunk/docs/sysfuncs.txt
index d84e213c5..af863fe71 100644
--- a/kernel/trunk/docs/sysfuncs.txt
+++ b/kernel/trunk/docs/sysfuncs.txt
@@ -148,7 +148,9 @@ Parameters:
 Returned value:
   * if the buffer is empty, function returns eax=1
   * if the buffer is not empty, function returns al=0,
-    ah=code of the pressed key, high word of eax is zero
+    ah=code of the pressed key,
+    bits 16-23 = contain scancode for pressed key,
+    bits 23-31 = zero
   * if there is "hotkey", function returns al=2,
     ah=scancode of the pressed key (0 for control keys),
     high word of eax contains a status of control keys at the moment
diff --git a/kernel/trunk/gui/event.inc b/kernel/trunk/gui/event.inc
index 3ee514d22..4aa9da8f7 100644
--- a/kernel/trunk/gui/event.inc
+++ b/kernel/trunk/gui/event.inc
@@ -454,7 +454,11 @@ align 4
         cmp     al, 120
         jae     .result ;overflow
         inc     byte[KEY_COUNT]
-        mov     [KEY_COUNT+1+eax], dl
+        mov     [KEY_BUFF+eax], dl
+; store empty scancode
+        add     eax, 120+2
+        mov     [KEY_BUFF+eax], byte 0
+        sub     eax, 120+2
 ;--------------------------------------
 align 4
 .result:
diff --git a/kernel/trunk/hid/keyboard.inc b/kernel/trunk/hid/keyboard.inc
index 83ee8f8c5..829330d08 100644
--- a/kernel/trunk/hid/keyboard.inc
+++ b/kernel/trunk/hid/keyboard.inc
@@ -488,7 +488,12 @@ send_scancode:
         jae     .exit.irq1
         inc     eax
         mov     [KEY_COUNT], al
-        mov     [KEY_COUNT+eax], bl
+; store ascii or scancode
+        mov     [KEY_COUNT+eax], bl ; actually KEY_BUFF + EAX - 1
+; store original scancode
+        add     eax, 120+2
+        mov     [KEY_COUNT+eax], ch ; actually KEY_BUFF + EAX - 1 
+        sub     eax, 120+2
 .exit.irq1:
         ret
 ;---------------------------------------------------------------------
diff --git a/kernel/trunk/kernel.asm b/kernel/trunk/kernel.asm
index ac10f44e4..02861399f 100644
--- a/kernel/trunk/kernel.asm
+++ b/kernel/trunk/kernel.asm
@@ -3129,7 +3129,9 @@ sys_getkey:
         jne     .finish
         cmp     [KEY_COUNT], byte 0
         je      .finish
-        movzx   eax, byte [KEY_BUFF]
+        movzx   ax, byte [KEY_BUFF + 120 + 2]
+        shl     eax, 8
+        mov     al, byte [KEY_BUFF]
         shl     eax, 8
         push    eax
         dec     byte [KEY_COUNT]
@@ -3139,6 +3141,9 @@ sys_getkey:
         mov     eax, KEY_BUFF + 1
         mov     ebx, KEY_BUFF
         call    memmove
+        add     eax, 120 + 2
+        add     ebx, 120 + 2
+        call    memmove
         pop     eax
 ;--------------------------------------
 align 4